To join our protection relay WhatsApp group, please send interest on Whatsapp +989129613659

Protection Relay 4

Elec-Engg provides the whatsapp group platform to large number of professionals all over the world to meet up, discuss and share updates related to protection relay, protection relay testing, and IEC 61850 only. Please read the below rules carefully.
– Elec Engg: I, Saeed Roostaee, a team member and e-commerce manager at, interested in protection relay and testing, substation automation and IEC 61850 standards. Feel free to contact me at ant time🌸
🌟Follow the group rules and objectives of the group
🌟This is an international group, just text in English
🌟Actively participate in the group.
🌟Don’t make any personal message to the group members
🌟 Post your message in one single chunk of text, don’t post every word or sentence in a new message.
🌟No changing of group name or group DP
🌟Advertisements, announcement of event of other groups needs approval from Admin before circulation (+917303437524 ).
🌟If any member is not following the rules, we have authority to remove from the group
🙏Feedback and suggestions are always welcome

08/abb, 10:55 – Elec Engg: Living in Delhi, India
08/abb, 10:56 -abb: Thanks very much indeed 🙏
08/abb, 10:56 – abb: M.Saeed khan from Pakistan working at NordexAcciona as a wind turbine specialist…
08/abb, 10:57 – Elec Engg: Now please only introduce yourself completely,
08/abb, 10:57 – abb”: Wasif Akmal ,working at NESPAK.
National engineering services of pakistan.
08/abb, 11:00 – abb: Ali Raza, working at XERVON SA as Testing & Commissioning Engineer. From Pakistan working in Saudi Arabia.
08/abb, 11:00 – abb: Mohamed Eissa ..working in Sudanese Electricity Transmission Co (SETCO) ..Protection Engineer
08/abb, 11:01 – abb*: Monem Tariq. From Sultanate of Oman
Electrical Engineer. Aspiring to become Testing/Commissioning Engineer. Working as Project Engineer for Utility Network Extension in Dhofar State.
08/abb, 11:02 – abb: 9 contacts.vcf (file attached)
08/abb, 11:02 – abb: Please add these no in this group
08/abb, 11:02 – abb: Hi Admin
08/abb, 11:03 – abb: Hi admin please add this no in this group
08/abb, 11:04 -abb: Vaithiyanathan .Schneider.vcf (file attached)
08/abb, 11:04 -abb: Hi please add this number
08/abb, 11:05 -abb: Nithin Gorthi, Production & Maintenance Engineer, Pan Africa Enterprises Limited, Arusha, Tanzania
08/abb, 11:05 -abb: Muhammad Osama working as Deputy Manager in Generation Dept. of K-Electric Department. Involved in Grid Commissioning at Power Plants sites and Electrical Maintenance.
08/abb, 11:06 – abb: 2 contacts.vcf (file attached)
08/abb, 11:07 -abb: Myself Vadivelan working in KEC INTERNATIONAL LTD in laos. Am specialized in testing and Commissioning of Electrical equipment and protection devices
08/abb, 11:07 – abb: Please add this no
08/abb, 11:13 -abb: Gokul, Siemens ltd , interested in substation concepts and design , Automation
08/abb, 11:14 – abb :shantareddy iindia: Shantareddy ,kirloskar Ltd ,interested in protection relay
08/abb, 11:16 – abb: Devang shah ABB INDIA LTD Commissioning Engineer
08/abb, 11:16 – abb: From India
08/abb, 11:16 – abb: Sachin, from Reliance industries iindia interested in protection system
08/abb, 11:17 – abb: Yukkeshwar – Alfanar Testing and Commissioning – Saudi Arabia
08/abb, 11:18abb: Nagaraj- Testing and Protection Engineer ALFALGI

08/abb, 11:18 – abb: Nisar Ahmad Waqar from Diversey Pakistan
08/abb, 11:18 – Elec Engg: To add your friends into this group, forward the following message to them.
08/abb, 11:18 – Elec Engg: To join the Protection Engineers WhatsApp Group:
Save +917303437524 as ” Ele-Engg ” in your contacts
Send a WhatsApp message as : Join Prtection Relay 4 ” Your Name
08/abb, 11:20 – abb: Nityam Shah…Testing & Comm Engg…UAE
08/abb, 11:22 -abb: Zubair .. Testing & Commissioning Engineer
08/abb, 11:23 – abb”: I’m Sridev- Substation Automation engineer at Voltech Engineers in India
08/abb, 11:23 -abb: Gnanavel,, Testing and Commissioning Engineer,, India
08/abb, 11:24 -abb: I’m Numaan secondary design engineer in Schneider Electric chennai
08/abb, 11:24 – abb: Sagar shah
Protection Engineer at Gujarat Energy Transmission Corporation (GETCO)
Gujarat state, India.
08/abb, 11:28 – abb: Shoaib hussaini from india
P.E @saudi eletricity company.
08/abb, 11:28 -abb: Ahmed Khalifa SAS Commissioning Engineer ABB KSA
08/abb, 11:29 – abb: Arul Raj-India.
ABB Global Industries & Services Pvt LTD.
R&D Associate Engineer.
Part of Relion 670,650,SAM600,SAM600_IO and REB500 product Testing Team.
08/abb, 11:30 – abb: Aehtesham Rana ,,India,,, Protection Engineer….6yrs… DEWA approved … looking for job .
08/abb, 11:30 – abb: Thanks
08/abb, 11:30 – abb: SRIKANTH T
400kV Maintenance KPTCL, Karnataka
08/abb, 11:31 -abb: This plant location
08/abb, 11:32 – abb: Doni Cross,Gadag
08/abb, 11:32 -abb: Ok
08/abb, 11:32 – abb: Wael atiyah from iraq
08/abb, 11:34 -abb: Any job vacancy please inform
08/abb, 11:39 -abb: Prabhagaran from Tamil NADU India working at IL&FS Tamil NADU power company ltd
08/abb, 11:39 -abb: As deputy manager electrical maintenance
08/abb, 11:44 – Elec Engg: Dear all members,
🌟Follow the group rules and objectives of the group
🌟This is an international group, just text in English
🌟Actively participate in the group.
🌟Don’t make any personal message to the group members
🌟 Post your message in one single chunk of text, don’t post every word or sentence in a new message.
🌟No changing of group name or group DP
🌟Advertisements, announcement of event of other groups needs approval from Admin before circulation (+917303437524 ).
🌟If any member is not following the rules, we have authority to remove from the group
🙏Feedback and suggestions are always welcome
Don’t start any discussion, just introduce!🙏🏻
08/abb, 11:44 – Elec Engg: Pls follow the rules
08/abb, 11:45 – Elec Engg: 🙏🙏🙏
08/abb, 11:45 – abb: Sakthivel testing and commissioning engineer with 5+year experience looking job now
08/abb, 11:46 – abb: Okays Sir
08/abb, 11:51 -abb: Mohamed Rifay. Working in SEL (Dubai) as Automation Engineer. 12+ Experience.
08/abb, 11:53 -abb: Thanks for having me here.
08/abb, 11:54 – Elec Engg: Dear all members, please take a moment and introduce yourself completely. Don’t start any discussion, just introduce!🙏🏻 Post your message in one single chunk of text, don’t post every word or sentence in a new message
08/abb, 11:55 -abb: Mostsfa helal
Quality engineer in Schneider Electric KSA
08/abb, 12:00 abb: Manoj Kumar maharana
Dy mgr Electrical (power plant)
Feedback power o&m service ltd
08/abb, 12:03 -abb: Dear all,
I’m Ramprakash from India working as electrical engineer in power line distribution and commissioning company,muscat – oman.
Company:- Alfalahy co llc, muscat.
08/abb, 12:17 -abb: Abubaker.Protection Engineer in national grids saudi arabia.
08/abb, 12:19 -abb: This is Ramesh kolanchi working as a Testing and Commissioning engineer electrical substation and power plants more than 10years
08/abb, 12:19 – abb: Khalid Mustafa
Maintenance & operation engineer at sudanese electricity distribution company (SEDC)LTD
08/abb, 12:39 abb: Pradip Desai
Power Systems Engineer at SYSTEM PROTECTION, Vadodara, Gujarat, India.
08/abb, 12:41 – abb: Ho I ask a question?
08/abb, 13:01 – Elec Engg: Dear all members, please take a moment and introduce yourself completely. Don’t start any discussion, just introduce!🙏🏻 Post your message in one single chunk of text, don’t post every word or sentence in a new message
08/abb, 13:02 abb: Engr. Zaigham Munir
Testing Engineer
ZGL Pakistan
08/abb, 13:02 – abb: Jameer Basha, Schweitzer Engineering Laboratories Pvt Ltd, Bangalore India
08/abb, 13:04 – abb: Manadi Med, commissioning eng Algeria public company sonelgaz power transmission
08/abb, 13:04 – abb: Iam HARIHARAN
Technician(maintenance and operation)
Bangalore international airport Ltd,
08/abb, 13:04 -abb”: Mohamed elmuntasir jalal protection engineer @SEDC Sudanese Electricity Distribution Company
08/abb, 13:25 – abb: I am V.Karpagalingam working as electrical commissioning supervisor in Saudi Arabia
08/abb, 13:27 – abb: Murali Manohar, Sr.Engineer, Indorama Petrochemicals, Nigeria
08/abb, 13:43 – abb: Horaira Azam Distribution Engineer Kuwait
08/abb, 13:54 – abb: K.Vivek
Protection Engineer
winstar Electro Mechanical Works, Qatar
Interested in Testing and commissioning ,protection
08/abb, 13:55 -abb: Gokul
Planning Manager
Siemens ltd
08/abb, 14:08 – abb: Karthik Donepudi
Jr.Project Manager
08/abb, 14:08 – abb: Sterlite power
08/abb, 14:08 – abb: Indore India
08/abb, 14:21 -abb: 7 contacts.vcf (file attached)
08/abb, 14:21 -abb: Please add
08/abb, 14:27 – Elec Engg: Add your friends 🌸
08/abb, 14:28 – Elec Engg: Dear all members, please take a moment and introduce yourself completely. Don’t start any discussion, just introduce!🙏🏻 Post your message in one single chunk of text, don’t post every word or sentence in a new message
08/abb, 14:40 -abb: EL-KSABI OSSAMA
Foreman in Protection and control of electrical network distribution. Morocco
08/abb, 14:43 -abb: 7 contacts.vcf (file attached)
08/abb, 14:44 -abb: Dilshad electrical service engineer working in UAE
08/abb, 14:44 -abb: Please add this list
08/abb, 14:51 – abb”: Yar add e karna bus koi kam ki bat nai tou group leave kar dien
08/abb, 14:54 -abb”: HAMED SANOSY
Electrical Engineer
Working at Petro Energy E&P Ltd,co. (cnpc sudan branch) as power plant opeartion & maintenance technician
08/abb, 14:57 – Elec Engg: Gerd Einsidler, Head of Technical Marketing for Energy Automation Products, Siemens, Germany.
08/abb, 14:57 – Elec Engg: Welcome Sir,
08/abb, 14:58 -abb: Thank you for your warm welcome
08/abb, 14:58 – Elec Engg: 🙏🙏🌸
08/abb, 14:59 -abb: Dears I really do not know what is the real objective of this group… It is not good to have another group with 1000 massages a day.
08/abb, 15:01 – Elec Engg: It is just started
08/abb, 15:01 – Elec Engg: Dear all members, please take a moment and introduce yourself completely. Don’t start any discussion, just introduce!🙏🏻 Post your message in one single chunk of text, don’t post every word or sentence in a new message
08/abb, 15:02 -abb: So imagine more thane 100 person introducing them self.
08/abb, 15:02 – Elec Engg: Please be patient and follow the rules, we can start discussion later
08/abb, 15:02 -abb: And no one will remember even
08/abb, 15:02 -abb: Dats true
08/abb, 15:02 -abb: Could you please tell me what is the benfit
08/abb, 15:03 -abb: Ok
08/abb, 15:03 -abb: I will be patient
08/abb, 15:03 – Elec Engg: Thanks 🙏🌸
08/abb, 15:04 – Elec Engg: It is recommended to save the numbers for future references and discussions
08/abb, 15:13 – Elec Engg: Dear all members,

Don’t start any discussion, just introduce!🙏🏻
08/abb, 15:48 – abb: Add expert in power protection relay world just to exchange informations thanks ADMIN
08/abb, 15:49 -abb “: Mohammad Ramadan, Jordanian, Schneider Electric, Automation Engineer ( Substation Automation System, Oil&GAS System)
08/abb, 15:50 -abb: Name : Basim
Country : Saudi Arabia (Pakistani)
Company: XERVON SA
Speciality : Protection relays ( ABB, Siemens siprotec 4,5 , Sinamics G180 , MiCOM , Allen Bradley ) and protection Schemes
08/abb, 15:53 -abb”: Rike Silinda 🇿🇦 RSA @ Harmonious Technical #Technician Protection:SEL/Micon/Sepam/Bender RCM/Janitza
*:switchgear *
08/abb, 15:58 – abb: Thank you Dr Saeed Roostaee
08/abb, 15:59 -abb: Name : Bhavin patel
Country : Vadodara,gujarat,india
Company: Expel prosys siemens system house
Speciality : testing & commisioning of electrical switchgear & electrical machines like generator ,motor , protection relay testing & programming ( siemens, micom, sel,abb,ge)
08/abb, 16:04 -abb: Name: Himanshu Amrutiya
Country: India
Company: Popular switchgear Pvt Ltd
Speciality: testing and commissioning of relays.
08/abb, 16:08 – abb: Name: David Edward Francis
Country: India
Company: Etricals Engineers Pvt LTD
And the contactor drops off
08/abb, 16:33 – Elec Engg: Dear all members, please take a moment and introduce yourself completely. Don’t start any discussion, just introduce!🙏🏻 We will start discussion later. Post your message in one single chunk of text, don’t post every word or sentence in a new message.
08/abb, 16:38 – abb: -Mohamed Elshafey
-Senior testing and commissioning engineer
-from Egypt 🇪🇬

  • PSP elsewedy
    08/abb, 16:41 – abb: You need to configure binary inputs,
    08/abb, 16:46 – abb “: Name: Maruthu Pandian
    Location: Kuwait
    08/abb, 17:16 – You added abb
    08/abb, 17:18 – abb: Mr.Yazid Bentayeb
    Fresh electrical engineer.
    08/abb, 17:34 -abb”: Name: Shahryar Haji
    Country: Iran
    Power Electrical student in tabriz university
    08/abb, 17:35 – abb: I am Anandababu , Senior commisioning engineer at PDCS
    Speciality: Protection Settings and Investigations
    08/abb, 20:51 -abb”: Name: Anil Patel
    Present Country: USA
    Native :Gujarat state, INDIA
    Education: Batchelor degree in Electrical Engineering
    Company : Previously I worked at MGVCL- Vadodara, Gujarat, India as Power Distribution Engineer
    In USA work as Electrical Distribution Design Engineer at TRC companies Inc , RockyHill, CT
    Interest field: Power Transmission & Distribution Engineering
    08/abb, 20:53 – abb: Joel Portes.vcf (file attached)
    08/abb, 20:53 – abb: Add My boss please
    08/abb, 21:24 -abb”: This message was deleted
    08/abb, 21:25 -abb”: Kashif khan,
    BE (Electrical), working in Middle East (Oman) since last 9+Years
    My Journey towards Project Management of

●Electrical Power Distribution and Utility Network Extension to develope electrical infrastructure of cities/towns

●132 / 33kV Substation Automaion Systems
09/abb, 00:16 – My Irancell Saeed Roostaee added abbs
08/abb, 22:23 -abb: I also interested in transmission side
08/abb, 22:27 -abb: Name: Inzamam
Present Country: Qatar
Designation: Electrical Project Engineer
Company: Faisal Bin Jassim Al Thani Group, Qatar.
Native :Telangana state, INDIA
08/abb, 22:56 – abb: Jonathan Jean
Dominican Republic, center América.
electric transmission company.
15 years in the department of controls and protections.
Electronic Engineer
09/abb, 00:17 – My Irancell Saeed Roostaee: Done
09/abb, 00:18 – abb: Thnks
09/abb, 00:30 – abbs: Hi
09/abb, 00:30 – abbs: Thanks
09/abb, 00:30 – abb: Hi
09/abb, 04:26 – abb: 19:00 in Dominican Republic ?
09/abb, 04:27 – abb: What time is it in the India ?
09/abb, 04:28 – abb: Greeting !
09/abb, 04:55 – abb: This message was deleted
09/abb, 04:59 – abb: Hello dear engineers;
I am working on sel 451 relay. And i faced a problem.dou you know what is 59V_2 In relay logic? all what i know is that it is related to overvoltage logic settings
09/abb, 07:19 – abb: It’s rltd over voltage ,u have conform it’s element 1/ element2
09/abb, 07:21 – abb: What does it mean
09/abb, 07:25 – abb: In logic we using 2 elements like 591V1 means over voltage element 1level 1 pickup
592V2 over voltage elemente level 2 pickup
09/abb, 07:25 – abb: What is the exact code u r using???
09/abb, 07:55 – abb: 59V_2
09/abb, 09:17 -abb: stage 2 of overvolage setting.
09/abb, 09:17 -abb: NAME : BHAVESH PANCHAL
Compney name : ERDA , VADODARA
I am looking after relay full type testing. intrested in IEC 61850 Protocol
09/abb, 09:53 – abb “: Hi… can anybody explain plz… in a electromechanical directional relay, how the direction is taken during a line- line fault….??
09/abb, 10:35 -abb: As a matter of fact this relay is a watt meter. in posetive watt close contact in negative watt open contact.
09/abb, 10:37 -abb:
09/abb, 11:36 – abb “: I agree… but during L-L fault, how will you get the correct polarizing voltage…??
09/abb, 11:57 -abb: I have tested in micom p143
09/abb, 11:59 -abb: It uses the cross polariztion and its will draw characteristic for each phase even it is L-L fault
09/abb, 12:08 – abb “: Ok
09/abb, 12:11 -abb: Unaffected/healthy phase will be used for polarization.
AB fault….C Phase voltage will be used.
BC fault…A phase voltage will be used etc
09/abb, 12:46 – abb “: Thank you sir
09/abb, 12:49 -abb: Sir , Do u have any study material for substation automation ?
09/abb, 12:52 – abb: Any materials regarding SAS kindly share here
09/abb, 14:20 – abb: What is back up protection for Generator Rotor Earth Fault
09/abb, 14:26 – abb: may be viberation sensor
09/abb, 14:33 – abb “: First stage is Rotor earth fault alarm.. if earth fault is at single point. Normally single point earth fault is not dangerous. Second earth fault on the same rotor, which is already having an earth fault, will bypass some portion of winding. It will lead to high exciter current and other mechanical instability problems. Then it’s dangerous and needs to be tripped very fast. Exciter will have rotor earth fault alarm and then trip. This may be routed to generator lock out protection.
09/abb, 14:49 – abb: If there is no change in Exciter Current then what can be the cause
09/abb, 14:50 – abb: We are having MRR1 CSPC make relay which is giving trip but there is no change in Exciter Current and Generator Vibration
09/abb, 14:57 – abb “: For single point earth leakage, there will be no visible changes in exciter current or high vibration.
09/abb, 15:03 – abb “: Change in exciter current and vibration comes when a part of rotor winding is bypassed and magnetic balance is affected. In your scheme I think stage 1 is trip, not alarm.
09/abb, 15:04 – abb: Ok..Can we keep it bypass…with making some other protection
09/abb, 15:04 – abb: No stage- 1 is alarm…both stages are actuating..
09/abb, 15:06 – abb: Ok..Can we keep it bypass…with making some other protection more prominent*
09/abb, 15:11 – abb “: Bypassing of rotor earth fault is not advisable… better to find out actual reason… Just megger the winding. You can assess whether there is actual fault or it’s a false alarm. Chances of earth leak in the brush area.
09/abb, 15:14 – abb: We are also suspecting the after changing the relay there is no any alarm or trip
09/abb, 15:15 – abb: Megger is normal and the resistance from slip ring to earth is also infinity
09/abb, 16:10 – abb: can any one share some document related to dfig rotor excitation in synchronous sub synchronous and super synchrous mode?
09/abb, 16:37 – abb “: Can any one explain me about the motor Reaccelaration process…
09/abb, 17:37 – abb: Any one tell me all problems finding in GE RELAYS ?
09/abb, 17:38 – abb: Which one
09/abb, 17:38 – abb: Which type of problem are you facing?
09/abb, 17:41 – abb: Any type I can answer you
09/abb, 17:46 – abb: Echo and current reversal in DEF in L90
09/abb, 17:48 – abb: More details about your question!!
09/abb, 17:53 – abb: What I mean is that each type has some unique problems. So the troubleshooting manual are different
09/abb, 17:59 – abb: I’m facing firmware bad operation in T60 main Differential
09/abb, 18:00 – abb: I’m unable to reset as display is stuck
09/abb, 20:36 – You changed this group’s settings to allow only admins to edit this group’s info
09/abb, 20:37 – You added AA 3173 Gg Iran join “mostafa darba monazzah”thanks
09/abb, 20:38 – Elec Engg: Invite your friends too, forward the following message to them
09/abb, 20:38 – Elec Engg: To join the Protection Engineers WhatsApp Group:
Save +917303437524 as ” Elec-Engg ” in your contacts
Send a WhatsApp message as: join protection relay 4 ” Your Name “
09/abb, 20:40 – abb: Hello everyone,, my dear group members
09/abb, 20:40 – abb: My name is Buddha jagan,, I’m completed diploma EEE,, 2013 pass out
09/abb, 20:41 – abb: I have 5 years of experience in 132kv /11kvsubstation
09/abb, 20:42 – abb: Please understand my request,,present I’m unemployed
09/abb, 20:43 – abb: Please one opportunity give me,, my dear group members
09/abb, 23:54 – You added abb and AA 3193 Gg Join protection relay 4
09/abb, 23:56 – You added abb “
10/abb, 02:26 – abb:
10/abb, 02:40 – abb:
10/abb, 02:48 – abb: Is 59V_2 same as 59VS2?
10/abb, 03:22 – abb: Thnks !!!
10/abb, 11:11 -abb: Hi everyone. May I know anybody working in Saudi Services for electro mechanic works company in Saudi Arabia?
10/abb, 11:18 -abb: Yes
10/abb, 11:18 -abb: I know many”
10/abb, 12:50 -abb: Thanks
10/abb, 12:59 – abb: Thanks for sharing👍👍👍
11/abb, 00:09 – abb: Hello every one.
I am Mohammad from Iran .protection and control engineer.I would be happy to learn more from all of you
11/abb, 20:37 – abb: Hi;
Can anyone of you provide us with selogic basics in format of pdf or doc files. Thanks in advance
12/abb, 01:27 -abb: This message was deleted
12/abb, 08:37 – abb: hi can anynone say how to extract rio filr from Red670 Abb relay
12/abb, 11:13 – abb “: Kindly tell about goosing
12/abb, 14:55 -abb: Hello guys,
Can anyone help me to test ABB make RVC power factor controller. It’s not operating.
12/abb, 14:59 – abb:
12/abb, 22:05 – abb: Open prameters then go to file and import parameter then select rio file
12/abb, 23:29 – abb “: Anybody has done partial discharge using omicron MPD600….??
12/abb, 23:31 – abb: I know a good engineer if you have a open job?
12/abb, 23:40 – abb:
12/abb, 23:45 -abb”:
12/abb, 23:45 – abb: Is closed
12/abb, 23:49 abb: CT Secondary open circuit
13/abb, 00:07 – abb “: Which differential protection…?? TX, BB, …?? High or low…??
13/abb, 00:07 -abb:
13/abb, 00:20 -abb”: It a recently refurbished panel not less than 6 month and has been operating without any problems.
13/abb, 00:21 -abb”: Trfr Protection
13/abb, 00:41 – abb: Lose connection.
13/abb, 00:45 – abb:
13/abb, 00:45 – abb: IEC 61850 intro !
13/abb, 01:09 -abb”: Could be, the terminal blocks were so old ,if you put a screwdriver in, they would break easily
13/abb, 01:18 -abb: hello everyone. iam looking for name of logical node in 61850 protocol (conversion BCD TO INT32)
13/abb, 01:19 -abb: i need to convert Binary input to decad variable in INT32
13/abb, 01:19 -abb: thanks
13/abb, 01:35 – abb: Do you have complete presentation or videos of this intro
13/abb, 03:04 – abb: Now , is finish
13/abb, 03:05 – abb: Means what?
13/abb, 03:44 – abb:
13/abb, 03:45 – abb:
13/abb, 03:45 – abb:
13/abb, 03:45 – abb: From Megger
13/abb, 03:47 – abb: Can you post the videos if possible ?
13/abb, 06:40 – abb: Yes, we have done PD using MPD
13/abb, 07:18 – abb “:
13/abb, 10:35 – abb “: Any one can tell me how to perform goosing between Siemens relay and Abb relay
13/abb, 10:52 – abb: The voltage of test depends upon the signal shape. Like if you test via VLF. The test voltage is like 1,7 times Uo.
13/abb, 11:06 -abb”: ‎2 contacts.vcf (file attached)
13/abb, 11:06 -abb”: 👆🏻Please Add my Electrical Power Engineer friend
above contact in group
13/abb, 11:15 – Elec Engg: Invite your friends too, forward the following message to them
13/abb, 11:15 – Elec Engg: To join the Protection Engineers WhatsApp Group:
Save +917303437524 as ” Elec-Engg ” in your contacts
Send a WhatsApp message as: join protection relay 4 ” Your Name “
13/abb, 12:14 -abb: Do u know any device make connection between different line differenital protection (siemens7Sd6101/micom P543)
13/abb, 12:27 – abb: With fibre optic
13/abb, 12:29 abb: I think this will never happened, since both should be identical
13/abb, 12:32 -abb: Yes
13/abb, 13:41 – abb “: Both should be same make and same MLFB
🌟Follow the group rules and objectives of the group
🌟This is an international group, just text in English
🌟Actively participate in the group.
🌟Don’t make any personal message to the group members
🌟 Post your message in one single chunk of text, don’t post every word or sentence in a new message.
🌟No changing of group name or group DP
🌟Advertisements, announcement of event of other groups needs approval from Admin before circulation (+917303437524 ).
🌟If any member is not following the rules, we have authority to remove from the group
🌟 No greeting and other personal discussion. Do not say good morning, good night, thanks etc.

Everyone must respect the group.
🙏Feedback and suggestions are always welcome

The group discussions are open 24/7. hit “Mute” on your Whatsapp group. You will still receive all the messages, but your phone won’t buzz or make a noise for every one of them
Now, please take a moment and introduce yourself completely : Your Name, Country, Company, specialty
14/abb, 11:18 -abb: Hello Team,
Name -Yogesh Sonawane
Country- India
Company – Siemens LTD(Third party)
Specialty- experience in Substation Automation,RTU and protection relay(Ashida Relay) configuration.
Looking for better opportunity in Gulf countries
14/abb, 11:22 -abb: Name: Viswateja from India
Company:ASHOMCo (Saudi Arabia)
Specialty: Electric engineer at Cogen power plant for Saudi Aramco
14/abb, 11:29 -abb: Muhammad Ali Imran
Company:SGS Pakistan Pvt Limited
14abb, 11:29 – abb: Ritesh Bamania
14/abb, 12:31 – abb: Nagarajan
14/abb, 12:41 abb”: Mahmoud shaker
14/abb, 12:43 – abb: Nagender
14/abb, 12:44 – abb: Naga
14/abb, 13:23 -abb: Name: Hassan Ahmed Najmi
Company: Siemens Pakistan Eng, Co.
Profile: Energy Management Digital Grid (Telecom

14/abb, 14:52 -abb: This message was deleted
14/abb, 14:53 -abb: Please i need doc about 101 and dnp3 ptotocols ? thanks
14/abb, 17:05 – You added AA 3101 Gg Add join protection relay 4 ” IBRAHIM OSMAN “
15/abb, 03:17 – abbs: Six times 3 or six times 2
15/abb, 03:17 – abbs: 222222
15/abb, 03:17 – abbs: 333333
15/abb, 03:18 – abbs: In siprotec 4 is 000000 default password
15/abb, 03:21 – abb: This message was deleted
15/abb, 03:24 – abb: El Link te da varios pass
15/abb, 16:34 abb: Hello friends anyone know how to recover siemens relay 7sJ801 from monitor mode?
15/abb, 16:35 – abb”: Jst turn off DC supply and turn on
15/abb, 16:39 – abb: Just In Monitor Mode, you can see reset option in drop down list, please reset the relay and it will recover to original.
15/abb, 17:00 – abb:
15/abb, 20:01 -abb: If happen after FW update . You have to initialize device
15/abb, 23:52 abb: Thanks alot..m issue resolved
15/abb, 23:55 – abb: Please let us know, how problem solved???
16/abb, 01:09 -abb: plz tell about PSB protection operated in brief.
16/abb, 09:01 -abb: Psd fanction avoid a hug load of a matter of fact metering dz/dt.since a fault is hi speed but a load is low speed or dz/dt
16/abb, 10:54 – abb “:
16/abb, 18:28 – abb: Excelente
17/abb, 11:40 – abb: Performance monitoring reporting system
17/abb, 11:42 – abb:
17/abb, 12:26 -abb: In MICOM Transformer relay manual it is mentioned that 41% of winding ( Say 20% setting of In if CT secondary is 1 Amp ) will be covered under differential protection and balance 59% will be covered in REF protection for star winding connection transformer. My Query is how much winding will be covered in differential protection if transformer windings are delta connected Dd1.
17/abb, 12:29 -abb: Is there any document available to understand how the current flows inside each branches of delta winding during healthy condition, during Phase to Phase fault and during Phase to Earth faults.
17/abb, 12:31 – abb: Please can you help out by briefly explaining, how problem resolved?
17/abb, 13:09 – abb: Brahim for Algeria working at grte, Manager of electricity transportation networks, I search the licence for ied scout software. Thanks friends
17/abb, 13:18 abb: if it is Dd Conection then REF can not be applied unless yuo use zigzag transformer as a grounding transformer.. if so then you will use the same persentage
17/abb, 13:19 -abb:
17/abb, 13:33 – abb: Hope License is the problem, please try with Genuine License Number.
17/abb, 13:33 -abb: but i did put a genuine key when asked during digsi installation
17/abb, 13:36 – abb: Hope, License might be utilized before and it might not be multiple user License. Please check with Siemens….
17/abb, 13:44 – abb: Am getting error while installing digsi 4.91 in Windows 8.1 saying operating system is not supported
17/abb, 15:12 – abb:
17/abb, 15:13 – abb: Thank you
17/abb, 15:15 – abb:
17/abb, 16:18 – abb: C&S make MRR1 rotor Earth fault relay is not giving any alarm when output is not connected…but it’s giving alarm as soon as output wire is connected
17/abb, 16:18 – abb: What can be the cause
17/abb, 16:23 -abb: is it a dry contact?
17/abb, 16:24 – abb: Yes
17/abb, 17:00 -abb: maybe the internal relay is power by the control voltage itself.
17/abb, 17:01 -abb: does it happen in other relays also?
17/abb, 18:50 – abb: No
17/abb, 19:10 – abb:
17/abb, 19:10 – abb:
17/abb, 20:32 -abb: What type of relay this? Try to avoid this type of msgs
17/abb, 20:34 – abb: It came unfortunately
17/abb, 20:35 -abb: Is it a jock…
17/abb, 20:35 -abb: Admin plz remove this person
17/abb, 20:36 -abb: It’s not a jocking group
17/abb, 20:37 – abb: I think this is by mistake. May be mobile is in child hand.
17/abb, 20:37 -abb: Then he has to forgive….for make another chance
17/abb, 20:38 – abb: 🤔
17/abb, 20:39 -abb: Wht?????
17/abb, 20:44 -abb: Leave it guys….
17/abb, 22:03 – You removed abb
17/abb, 22:09 – abb: 🤭🤣
17/abb, 22:11 – You removed abb
17/abb, 23:51 – abb “:
17/abb, 23:51 – abb “: Output relay testing procedure is here in this manual
17/abb, 23:53 – abb: can anyone share the document related to dfig excitation?
18/abb, 07:07 – abb: Thanks
18/abb, 17:14 – abb “: Anyone experienced in MPD 600 for PD measurement…???
20/abb, 07:04 -abb: Hi, how pilot advance transformer (PAT) works? How its connections will be? These transformers are used in rural agricultural feeders to ensure 3 phase power during non peak hours and single phase supply during peak hours..( single phase supply for rural houses and three phase for agricultural motors in farms ).
20/abb, 12:53 – abb: This message was deleted
20/abb, 14:12 -abb: Can you share a picture of such transformer please?
20/abb, 14:19 -abb:
20/abb, 14:20 -abb: Not having pictures.. Got the information about PAT transformer from this document only👆
20/abb, 14:21 -abb: This message was deleted
20/abb, 14:22 -abb: Yeah thanks, I read that. I actually have my own transformer related workshop, that’s why wanted to know more. Thanks a lot
21/abb, 22:10 – abb: Dear, someone Will have the IEC 60480 standart
21/abb, 22:22 – abb:
22/abb, 12:21 – abb: PSL in micom relay, areva ,Siemens, Abb, and SEL?!
22/abb, 15:39 -abb: Micom
22/abb, 15:40 – abb: And for others brands?
22/abb, 15:50 – abb: 1.Areva, Schneider, Alstom,GE – are using Micom products-PSL-Programmable scheme logic
2.Siemens-CFC- Continuous function chart
3.Abb-ACT- Application configuration tool
22/abb, 15:55 – You addedabb”
22/abb, 16:06 – abb: And SEL?
22/abb, 16:06 – abb: Psv
22/abb, 16:10 – abb: Please sir do you have a procedures how to commissioning RPH3 ?
23/abb, 01:26 – abb: Hi
23/abb, 15:01 – abb: Any working in low voltage switchgear stream
23/abb, 15:01 – abb: Power system
23/abb, 15:07 – abb “: S
23/abb, 15:18 – abb”: Yes
23/abb, 20:09 – abb: Yes,
23/abb, 21:18 -abb”: Hi all
could you share about SOTF function in distance Relays?
23/abb, 21:25 – abbs: Switch on to Fault
23/abb, 21:27 – abb: Elaborate plz
23/abb, 22:11 -abb: If ur going energise one feeder in that feeder have fault is existing and we gave a closing command to Breaker, then in that case SOTF protection will immediately trip the Breker.
23/abb, 22:18 -abb: Super mr. Govardanan
23/abb, 22:20 -abb: Please explain timesynch process in simens relay using SNTP.
23/abb, 22:48 – abb: Anti-pump relay
23/abb, 22:49 -abb: Anti pumping to protect the closing coil
23/abb, 22:49 – abb: cierre, interrumpir el comando


23/abb, 22:53 – abb: Some switches come from the factory but you can also design logic.
23/abb, 22:55 -abb: Some switches mean?
23/abb, 22:55 -abb: Communication switches?
23/abb, 23:00 – abb: excuse me power switches
23/abb, 23:40 – abb: please anyone, how to read icd file for abb relay
24/abb, 01:21 – abb: Go to parameter settings then click on file from menu bar after that select export parameters and select which type of file you want to export
24/abb, 14:05 – abb:
24/abb, 15:18 abb: Siemens 7sj8011, how can we change it?
24/abb, 15:18 abb:
24/abb, 15:18 abb:
24/abb, 15:19 -abb: Through Digsi Software
24/abb, 15:19 -abb: Use digsi
24/abb, 15:26 abb: Always or we can change setting to manually
24/abb, 15:36 – abb “: No you can’t
24/abb, 15:55 abb: Oh ok thanks
24/abb, 19:03 – abbs: Only by software DIGDI
24/abb, 19:05 – abb: Oook
25/abb, 08:05 -abb: Any one from GE Chen nai?
25/abb, 19:15 – abb: What is pre close and post close in trip circuit supervision , can anyone explain ?
25/abb, 19:26 – abb: This is for trip circuit supervisor relay concept. Pre close before closing the breaker trip circuit healthy condition. Post close mean after closing the breaker trip circuit healthy condition. This this trip circuit supervisor relay check the trip circuit coil must be healthy in pre close & post close condition. If trip circuit fail protection relay give any trip commend it will not operate. That why protection scheme have two numbers of trip circuit scheme. This is called pre close & post close.
25/abb, 19:28 – abb: Thanks
25/abb, 19:28 – abb: Welcome
25/abb, 19:30 -abb”: We learn every day🙏
25/abb, 19:30 – abb: 👍
25/abb, 23:51 – abb: Please I looking the abb red 615 file setting for comparaison.
26/abb, 13:10 abb: How to set Directional over current protection?
26/abb, 16:47 -abb:
26/abb, 17:37 -abb: 👍 well explained
26/abb, 19:32 – abb: Very nice, also when mechanical protection operates .. it will send trip command directly to lock out without going through main relay.
27/abb, 15:17 -abb: Breaker is not working automatic..we need to press it manually for the operation of the pump..can anybody help me out in this
27/abb, 15:17 -abb:
27/abb, 15:17 -abb:
27/abb, 15:19 – abb”: Breaker or contactor?
27/abb, 15:21 -abb: Contactor
27/abb, 15:21 – abb”: Plz share control schematics
27/abb, 15:30 – abb “: S we need the schematic diagram for the rectification
27/abb, 15:32 – abb: Quick check the float switch by force, if supply is not reaching upto contactor coil, then there may be problem in loop or float switch itself.
27/abb, 16:28 – abb: Vous avez trouver le ficher ou pas encore?
27/abb, 21:49 – abb: Non hamoudi. Introuvable
27/abb, 22:02 – abb:
27/abb, 22:04 – abb: Je cherche la configuration fichier pcmi pour faire la comparaison entre les deux relais
27/abb, 22:06 abb: Which language is this?
27/abb, 22:08 – abb: French
27/abb, 22:08 – abb: French
27/abb, 23:54 -abb:
28/abb, 12:21 – abb:
28/abb, 12:21 – abb: Can any one Help
28/abb, 12:21 – abb: ?
28/abb, 12:35 -abb: Download S1 studio password hash genetor
28/abb, 12:35 -abb: And set a password
28/abb, 13:46 – abb”: AAAA
28/abb, 13:51 -abb:
28/abb, 13:52 -abb: Please explain function of resistor connected series in tripping coil
28/abb, 13:59 – abb “: It’s the trip circuit supervision circuit. It limits the current through the trip coil below the pick up value.
28/abb, 14:04 -abb: Ok thank you sir
28/abb, 14:56 – abb: A diagram is nor clear!!!
28/abb, 17:18 – abb: 👍👍👍
29/abb, 11:23 – abb:
29/abb, 11:54 – abb: Can we use single pole ac mcb in DC Circuit in negative polarity where positive polarity is grounded, dc system voltage is -48V,
If ans is yes then why??
29/abb, 14:17 -abb: Brother MCB has nothing to do with voltage. In your specific circuit, whatever the voltage is, doesn’t affect MCB.
Any kind of circuit breaker works on Current and it will work fine unless your circuit is designed ok. Even then it wouldn’t be circuit breaker that would be an issue but design of circuit.
29/abb, 14:20 – abb: But I am asking about dc and ac mcb difference. Whether the can be used interchangeably
29/abb, 14:55 -abb: Yes they can, I have used them.
But it depends in sensitivity of your circuit as well.
if an MCB designed for AC, it will trip sooner if used on DC, in case if fault.
29/abb, 14:55 -abb: In normal condition, it works fine
29/abb, 14:56 – abb: What I think is all breakers are rated to work with all type of voltages in ac and dc
29/abb, 14:57 – abb: Only the short circuit capacity will change according to the voltage
29/abb, 14:57 -abb: Some dedicated for DC, their coil don’t get heated as fast as AC…
29/abb, 14:57 -abb: Exactly
29/abb, 14:57 – abb: Yes those are special breakers
29/abb, 15:59 – abb: Thanks to all🙏🙏🙏
29/abb, 19:29abb: Friends anybody having red670 distance protection schemetic diagram..if u have pls forward to
29/abb, 22:16 – abb: send here plz
30/abb, 01:16 -abb: This message was deleted
30/abb, 01:16 – abbs:
30/abb, 01:16 – abbs:
30/abb, 01:16 – abbs:
30/abb, 01:17 – abbs:
30/abb, 01:17 – abbs:
30/abb, 01:17 – abbs:
30/abb, 01:17 – abbs: Where,s protecction system in these case?
30/abb, 01:19 – abb: Where is that?
30/abb, 01:20 – abb: Guess protection engineer has not configured output contacts of relay 🤪
30/abb, 01:20 – abbs: I don’t now
30/abb, 01:20 – abbs: May be
30/abb, 01:23 -abb: New york
30/abb, 01:24 -abb: Usa
People in the fist thought it might be an alien attack
30/abb, 01:26 – abb: Lol its scary
30/abb, 01:27 -abb: Search new york blue sky on utube. It’s hilarious
30/abb, 01:29 – abbs: 😨
30/abb, 09:00 – abb:
31/abb, 15:06 -abb: Hi. Is there anybody who has tested abb SwitchSync relay L183?
31/abb, 15:08 -abb: Or anyother SwitchSync relay from other manufactures like SIEMENS?
31/abb, 15:15 – abb: Synchro-check relay SPAU 140 C
31/abb, 15:29 -abb: Thank you very much but SPAU 140 C is synchrocheck relay not a syncswitch relay
31/abb, 15:32 – abb: Switchsync PWC600 is ABB
31/abb, 15:32 – abb: RPH3 ALSTOM
31/abb, 15:33 – abb: Controlled Switching with the Siemens Phase Synchronizing Device (PSD)
31/abb, 15:34 – abb: the MCS025 Sync-Check Module Schneider
31/abb, 15:36 -abb: Thank you very much. So you have tested these relay?
31/abb, 15:36 -abb: Have you used omicron?
31/abb, 15:37 -abb: Would you please give me test procedure or settings that have worked for testing these relays
01/abb, 00:35 – abb: Wish You Happy New Year 2019 With Bright Future & Enjoy Life For You & Your Family
01/abb, 02:43 – abbs: 👍🏾
01/abb, 03:15 -abb:
01/abb, 09:53 – abb:
01/abb, 10:29 – abb:
01/abb, 11:15 -abb: Happy new year to all 💥⚡✨💐
01/abb, 19:51 – abb: Any one have good document to understand ABTS and TOP.
01/abb, 19:56 – abb: Procedure SAT RPH3 ALSTOM please!?
01/abb, 21:06 -abb: Can we find amp to rpm ?
01/abb, 21:26 – abb: ???
01/abb, 21:42 -abb: Can we find amp from RPM?
01/abb, 21:43 -abb: Motor rpm
02/abb, 00:03 – abb: 🙄no
02/abb, 00:06 – abb: Engine with a power of 250 kW 1500 rpm and a 1500 kW 1500 rpm engine
02/abb, 16:06 -abb: Any one working or heard abt company called valmet?
02/abb, 18:04 -abb: Hi, There is opening in Schneider Electric, Chennai, India for Commissioning engineer with 5 to 7 Years’ experience..
Candidate must have knowledge on
1.) Commissioning of Numerical protection relays ( Distance, Differential, Busbar, Overcurrent & E/f )
2.) Hands on experience in configuration and testing different make protection relays with Omicron 356 / Double testing kits.
3.) Provided setting calculations for above said protections including CT & VT sizing..
Candidate may need to travel Global sites if required for commissioning & Training customers ..

To join our protection relay WhatsApp group, please send interest on Whatsapp +989129613659

Qualifying and Interested candidates can send your CV to
02/abb, 19:14 -abb”: Could you share any data about DCS system in substations?
03/abb, 00:21 -abb: What kind of dcs want?
03/abb, 00:21 -abb: Or type
03/abb, 00:22 -abb: Siemens ,Arefa
03/abb, 02:20 -abb”: This message was deleted
03/abb, 02:21 -abb”: Siemens please.🙏
03/abb, 04:41 -abb: Wincc or sicampas
03/abb, 13:49abb:
03/abb, 16:57 -abb”: SICAM PAS
03/abb, 17:00 -abb”: thanks
03/abb, 19:10 – abbs: User: zivercom
03/abb, 19:10 – abbs: Password: 0000
03/abb, 19:10 – abbs: Other password: ziv
03/abb, 19:35 – abb: 👍🏾👍🏾👍🏾👍🏾
03/abb, 21:10 – abb: CGL uses this software
04/abb, 16:46 – abb “: Anybody have vedios for transformer differential testing
04/abb, 16:47 – abb “: Especially regarding the slope points
09/abb, 17:55 -abb: Join Prtection Relay 4 ” Zaigham ali changed their phone number to a new number. Tap to message or add the new number.
09/abb, 17:57 -abb: Join Prtection Relay 4 ” Zaigham ali changed their phone number to a new number. Tap to message or add the new number.
10/abb, 09:54 – abb: Hi All
What is the equivalent model of RED670 in SIEMENS ??
10/abb, 10:16 – abb: 7SA52
10/abb, 10:17 – abb: Ok Noted
10/abb, 10:51 – abb: 7SD52
10/abb, 10:55 – abb: Is not 7sa52,
10/abb, 10:56 – abb: 7sd52
10/abb, 11:05 – abbs: 7SL87 version 5
10/abb, 11:06 – abbs: 21 87L 67 79 25….
10/abb, 17:31 – abb: 👍🏾👍🏾👍🏾👍🏾
11/abb, 00:59 -abb: For Siemens relays 7SD…. means Line Differential Protection.
7SA… Distance Protection as main protection function. Depending on the device type distance or line diff is available as main 2 function.
7SL … Line and Distance Protection. (SIPROTEC 5)
11/abb, 02:30 – abb: 👍👍
11/abb, 05:45 -abb: In micom relays can I upload the revised PSL while the relay is in service ?
11/abb, 05:45 -abb: Will there be any maloperation..?
11/abb, 07:00 abb: PSL uploading may result in Pick up of BI/BO and then output contact.
12/abb, 13:05 abb: Check the connection
Or disconnect the DC from relay for a while and try again
12/abb, 13:18 -abb: Ok thank-you
13/abb, 16:09 – abb:
13/abb, 16:12 – abb: Nice
14/abb, 16:10 -abb”:
15/abb, 20:28 – abb”: Has anyone distance and diffrential realy calculation in excel ؟؟!
15/abb, 20:29 – abb”: Plz share if anyonw have
16/abb, 01:57 – abb:
16/abb, 01:58 – abb:
16/abb, 07:59 – abb: Hi
16/abb, 08:00 – abb: Anybody have calculation sheet in excel for voltage drop and current carrying capacity of cables
16/abb, 08:17 -abb: Hi…
Is it password protected??
17/abb, 00:33 – abb”: Hi you can download it from
17/abb, 00:37 -abb: Any body knows how to protect three phase to ground earth fault?
For MV network.
For single phase there are many ways but for three phase we have problem.
17/abb, 00:38 – abb: Thank u very much
17/abb, 01:35 -abb: Hi
I want to config distance relay model VAMP 259 but there is no option to enable fault locator. i can see the related option under distance menu but nothing is submitted (in KM or Ohm), is there any way to enable fault locator?
17/abb, 02:19 abb: What problems yuo have ?
Three phase to ground it will not detect as earth fault because no zero sequence or no current will flow in the neutral. It is just an over current.
17/abb, 12:19 -abb: Good morning. A 132 kV SF6 circuit breaker rated for 220 volts aux. Voltage is to be used in a substation where 110 volts DC voltage is available. Please advise which changes are necessarily to be made in Circuit breaker.
17/abb, 12:45 – abb “: If you want to modify the equipments in the circuit breaker for 110v you need to change more equipments. Better try to connect the two 110v supply in series
17/abb, 16:49 -abb: When the available voltage is 110VDC
Change the following parts
1-closing coil one unit
2-tripping coil two units
3-all the dc contact relay.
Otherwise wise Manage 220VDC
17/abb, 16:51 -abb: Indication Lamp
17/abb, 18:11 – abb”: I am trying to export micom 442 set file into xrio format by using schnider s1 studio, but imI cannot find xrio option in the export menu. Any body can help?
17/abb, 18:12 – abb”: “but I cannot find”**
17/abb, 18:22 abb: You can go to setting file in right side of software , and press right click by mouse , and go to export setting , Rio
17/abb, 18:29 – abb”: I did it like this way, but xrio option was not available. I think software version does not has this option. But I am not sure.
17/abb, 19:01 -abb: Thanks boss. Relevant option.
17/abb, 19:01 -abb: Thanks boss.
17/abb, 19:01 -abb: Thank you all. Allah bless..
17/abb, 20:54 – abb: Any one have good document to understand ABTS and TOP.
18/abb, 04:49 – abb: Any one have Method of statement For Transformer stability and Generator stability?

Kindly reply m19/abb, 19:25 -abb”: anyone has SICAM PAS complete training for download?
20/abb, 12:21 – abb: Anyone having Protection in HVDC Systems related data. Plz share
22/abb, 10:38 – abb”: Does any body have IEC standards pertaining to SF6 gas please share?
22/abb, 10:50 -abb: Any one , Can you give me transformer testing IEC standard ?? Plz
22/abb, 11:36 abb: Hello,
If the SF6 in HV CBs become very low. What is the standard action in this case .. does the CB trip ?or it must locked out?
If it is locked out does any breaker failure must be initiated
22/abb, 11:36 abb: ?
22/abb, 11:47 -abb: Stage 1 alarm , stage 2 block . Block gas pressure <•5 Mpa
Block is no more operation ,open or close .
If fault then if it is line Tele protection will activate if trafo feedder or normal feeder BF will operate.
22/abb, 12:04 abb: In 500 KV if stage 2 appear the breaker immediately trip! Is it correct or need discussion??
22/abb, 12:07 abb: In our scheme in 500 kV level, if stage 2 appear the breaker immediately trip .. in my opinion cb lock out must take plase rather than trip! .. Am I write??
22/abb, 12:08 -abb: I have only experience up to 400 kv Siemens CB , second stage not trip from cb scheme. But PSB functions can make trip . I have no knowledge about PSB
22/abb, 12:08 -abb: PSD
22/abb, 12:11 abb: Sorry, what is PSD
22/abb, 12:12 -abb: Phase Synchronizing Device (PSD)
22/abb, 12:17 – abb: Please need test procedure RPH3 synchronizing device please?!
22/abb, 12:20 abb: Thanks
22/abb, 12:21 – abb: Please need test procedure RPH3 synchronizing device please?!
22/abb, 12:22 -abb: Can I get testing IEC standard file @249123496701
22/abb, 12:23 -abb: All substation equipment and transformers.
22/abb, 12:23 – abb: Please need test procedure RPH3 synchronizing device please?!
22/abb, 12:24 – abb: We are getting Generator Rotor Earth Fault in Relay…How can we ensure that it is a false alarm
22/abb, 12:27 abb: I don’t have my friend.. I am operating engineer
22/abb, 12:43 -abb: Brother this is dangerous to trip the cb in case of stage 2 may not be able to quench the arc properly as sf6 pressure is its advised to block tripping in case stage 2 operates.
22/abb, 12:55 – abb: Tell me SEL relay password
22/abb, 12:57 – abb: 👍
22/abb, 13:29 – abb “: If sf6 gas content reduced breaker trip
22/abb, 15:27 -abb: Level 1 OTTER TAIL
22/abb, 15:49 – abb: 👍🏼
22/abb, 16:56 -abb: Stage 2 trip must be lockout, means Breaker will trip and shouldn’t Close until SF6 Gas is refilled to specified pressure.

Lockout means one needs to reset Lockout relay before closing Breaker.
But don’t reset until gas is refilled to required pressure.

Nominal pressure for 132kV is 5.6 bars absolute.
I have protocols of IEC Standard for Gas testing, if you nees I can send you tomorrow
22/abb, 17:25 -abb: Hi
Does Micom P741 and P742 need seperate software for PSL editin?
22/abb, 17:38 – abb”: No, s1 studio can do it.
22/abb, 17:39 -abb: thank you very much, but if i want to edit single line map of substation?
22/abb, 17:47 -abb: does anybody have P740 Scheme Editor?
22/abb, 17:48 – abb”: Please do send tomorrow
22/abb, 17:50 -abb: Sure, I would send you as soon as I open my laptop
22/abb, 17:50 – abb”: Thanks 👍
22/abb, 17:57 -abb: does anybody have P740 Scheme Editor?
22/abb, 18:06 – abb “: Could you please send me the Same.
22/abb, 21:49 -abb: Sure I will send it here
22/abb, 22:19 – abb”: Im this case you must use topolgy editor for micom
22/abb, 22:42 -abb: Do you have applicaton for that?
22/abb, 22:51 – abb: Iec 60076
22/abb, 22:54 – abb: If you want to go with diagnostic testing for transformer please refer C37.152
22/abb, 23:02 – abb: Can any tell me about IEC standard for GIS, MV switchgear, transformer, protection schemes and IED testing and commissioning
22/abb, 23:02 – abb: Needed IEC standard Codes
22/abb, 23:13 – abb”: Yes i have. but i do not have it’s serial number, unfortunately. You have to buy the application from schnider directly.
22/abb, 23:18 -abb: Would you please give me the link to download software?
22/abb, 23:19 -abb: Then i will buy serial numbrr
23/abb, 01:37 – abb: NIC NO RESPONSE in micom p142 and p143
What to do to solve this problem and what the cause for it
23/abb, 07:05 – abb: Problem with the hardware.
Temporary solution: restart the IED, alarm will disappear and after some days alarm will come again.
Permanent solution:Need to change network interface card and update the respective nic file to that board.
23/abb, 10:24 – abb: Thanks for reply
24/abb, 21:47 -abb: Plz share Rio/PTL file for P44T relay Alstom make,,
24/abb, 22:00 abb: Anyone having Sepan M40 Series motor relay testing file?
24/abb, 22:01 – abb: Hi, hope u need relay file ????
24/abb, 22:02 abb: Yes
24/abb, 22:02 abb: Please
24/abb, 22:03 – abb:
24/abb, 22:12 abb: Which format is this?
24/abb, 22:13 abb: Sir this is not supported. Is it Pdf or excel?
25/abb, 00:33 – abb: Password ? Sure
29/abb, 19:17 – abb: Hi ..

To join our protection relay WhatsApp group, please send interest on Whatsapp +989129613659

Anybody having idea about Siemens OPC server communication
29/abb, 21:01 -abb: anybody has serial number for micom topology editor ?
29/abb, 21:01 -abb: or can edit sdl for micom p741?
30/abb, 10:59 -abb: In Micom S1 studio, while uploading psl file to relay, we get three options, First is Enhanced logic only, second Logic only, third Full form .. My question is what is the difference between these three options.
30/abb, 11:30 – abb: The difference is in the settings updated with the psl update.
30/abb, 20:18 – abb “: Hi…. Anybody has the sample test report of Partial Discharge test on Distribution Transformers….??
31/abb, 14:03 abb:
01/abb, 22:07 -abb: In below attachment, Generator Stator earth fault is detected by connecting Neutral side NGT secondary voltage in series with Phase side open delta voltage which derived through external IVT. Query is how this works and what will be output voltage of this combination which is measured by MICOMP345 relay ..
01/abb, 22:08 -abb:
01/abb, 22:09 -abb:
01/abb, 23:35 – abb: Hello everyone
01/abb, 23:36 – abb: Who is the best version windows to install all software digsi, agil, pcm….. Without bug?!!! Thanks
01/abb, 23:39 – abb: Leonardo Dicarprio
01/abb, 23:39 – abb: 🤝
02/abb, 02:42 -abb”: 10
02/abb, 03:51 – abb: Without bug or dysfunction??!
02/abb, 08:24 -abb”: Yet
02/abb, 13:15 – abb:
03/abb, 14:03 – abb:
03/abb, 14:04 – abb: commissioning Manuel please 🙏
03/abb, 17:46 – abb: Someone had omicron test templates cmc356, for overcurrents, differential, etc, and also some good bibliography for generator protections.
05/abb, 17:12 – abb: Test
05/abb, 17:20 – abb: This your book
05/abb, 17:20 – abb: This is your book
05/abb, 17:29 – abb:
05/abb, 19:23 -abb: Did anybody have protection relay testing handbook
05/abb, 19:23 -abb:
05/abb, 19:35 -abb: 👍🏻👍🏻👍🏻👍🏻
Thank you so much
05/abb, 19:36 – abb: Excellent thank u👍👍👍
05/abb, 19:36 – abbs: 🤗👍🏾
05/abb, 20:02 abb: Thank you very much🤗🌸🤗🌸
As you notice this book is volume 4 in the series . . I would appreciate it if you send volumes 1-3
05/abb, 20:03 – abb: Thank you dear it’s very helpful
05/abb, 20:24 -abb: 👍🏻
05/abb, 20:59 – abb: Your are welcome.
I wiil trh to find the other volumes
05/abb, 21:01 abb: Thanks Yazid … 🌸🤗❤👍🏻
05/abb, 21:01 – abb: You are welcome
05/abb, 21:20 -abb: Wonderful and helpful.. Allah bless..
05/abb, 21:20 – abb: You’re welcome
05/abb, 21:22 – abb:
05/abb, 21:28 – abb:
05/abb, 21:32 – abb:
05/abb, 21:32 abb: ❤
05/abb, 21:33 – abb: Volume
05/abb, 21:33 – abb: Thnx
05/abb, 21:59 – abb: Please share volume 4
05/abb, 22:01 abb:
05/abb, 22:01 – abb: OK thanks
05/abb, 22:02 abb: YAZID : Thanks .. very much ❤
05/abb, 22:16 – abb: You are welcome
06/abb, 00:44 -abb: My dear good friends
I have problem with the earth fault.
We have used Siemens o/c relay which is functioning very good for o/c ,e/f and s/c
For the earh fault whenever it’s happened either one or two phases it’s working ,but whenever it’s 3phase .the relay is not working.
Please help me in this issue
06/abb, 00:46 – abbs: Always trips with 3phase faults?
06/abb, 00:49 -abb: For other fault it’s ok but the 3 phase Eearth fault is not detecting.
By primary current injections each phase individually functioning.
06/abb, 00:54 – abbs: 🤔
06/abb, 00:54 – abb”: What are the magnitudes and angles of 3 phase currents you injected for test?
06/abb, 00:55 – abbs: What SIEMENS OC relay model?
06/abb, 01:01 -abb: 7SJ601
06/abb, 01:01 – abbs: Version 3
06/abb, 01:01 -abb: Yes 3
06/abb, 01:04 -abb: The earth fault setting for the stage one I> 15A
If faults is even 20A no functioning
06/abb, 01:37 abb: Dear friend .. 3 phase fault it is not an earth fault .. even if 3 phase to earth it will not detect by earth fault protection
06/abb, 01:41 abb: If you inject three equal magnitudes with 0,120,-120.. earth fault will not function even if it is more than earth fault setting .
06/abb, 01:46 – abb”: While you are injecting current, check relay measurments and make sure that neutral current exceeds the setting value (15A)
06/abb, 01:46 – abb”: If current exceeds setting then you have to check whether directional fuction is enabled or not. Also somtimes you need to check the earth fault calculation method if its measured or calculated.
06/abb, 01:47 – abb”: Finally check the current connection to relay. Make sure that current circuit loop is closed
06/abb, 01:49 – abb”: Thats totally right. balance values will not initiate earth fault fuction.
06/abb, 01:55 – abb “: I agree with that the balance magnitude will not result in earth fault. Check the neutral current flow
06/abb, 02:08 -abb”: The 3phase fault is consider balance three phase fault so no earth fault will detect, you need to active o/c protection.
Even if E/F operate with three phase fault it will be due to unbalance not a real earth fault.
06/abb, 02:25 – abb “: Just reduce the setting for testing purpose and inject the current in all three phase monitor the neutral current flow now increase the current value in only one phase until the neutral current value reaches your setting value definitely it will trip according to the curve. Check the setting whether it is non directional.
06/abb, 06:43 -abb: Hope you are testing directional earthfault.. Check the voltage magnitude which you are injecting to the relay.. it shouldn’t be zero.. mostly relays require minium of 3Volt for sensing the right direction.. suggest give 10V in Y and B phase and 5V in R phase and injecting the fault current above the setting..
06/abb, 15:45 -abb: if the three currents are not shifted between them by 120 degrees, even if they have the same amplitude, it will trip because the vector sum of the three phases becomes different from zero. (Io # 0A)
06/abb, 16:50 -abb: Admin… Please add Mr. Sajimon to group
06/abb, 16:50 -abb: Sajimon Bro India No.vcf (file attached)
07/abb, 16:44 abb: Dear i am facing a problem in Siemens 7SJ8041
When Relay Trips on Under Volatge and Voltage comes back to normal and i try to reset the Relay Binary outputs and Leds then relay does not resets… i have to go into Test and diagnostic menu and have to reset whole relay from there… any solution?
07/abb, 16:51 – abb: Please check drop out ratio of relay….
07/abb, 16:52 – abb: normal drop out is 1.2 for under voltage
07/abb, 16:53 abb: Secondly in 7s8041 Relay does not trips on Reverse Power
07/abb, 16:54 – abb: Please check additional functions available or not
07/abb, 16:58 abb: Yes available
07/abb, 16:59 abb: And setting at 166.5W
07/abb, 17:02 abb: From where we can check it?
07/abb, 17:14 – abb: This message was deleted
07/abb, 17:15 – abb: It is available in u/v settings.
But you need Laptop and active additional settings
07/abb, 17:18 abb: Okk brothet
07/abb, 21:35 – abb: Plz Add Aimal Khushal Assistant Manager Maintenance NTDC
07/abb, 21:53 – abb: If any one this relay manual English electric, CDG31FF8051JL(M), electromagnetic relay kindly reply me
08/abb, 16:48 – Elec Engg: Invite your friends too, forward the following message to them
08/abb, 16:48 – Elec Engg: To join the Protection Engineers WhatsApp Group:
Save +917303437524 as ” Elec-Engg ” in your contacts
Send a WhatsApp message as: join protection relay 4 ” Your Name “
08/abb, 20:21 – You addedabb and A1 5422
08/abb, 20:28 abb: If a transformer is protected with both REF (64REF) and Differential (87).. as we know REF is more sensitive than 87 and operate for the unprotected winding near to the neutral side.
My question: is any 87 trip means also REF trip in same time ???
08/abb, 22:50 – abb”: No, REF only responds for earth faults inside zone.. if the fault is not related to earth.. then only differential will operate.. in the case of earth faults both can trip the transformer( the faster will trip first).
09/abb, 00:55 abb: Thsnks Mohammed. got it
09/abb, 01:03 abb: and if the transformer has high impedance grounding.. the earth fault near star point ( less than 40% of winding) may not initiate 87 ( when you apply slope and operation and restraint)… in this case only REF will operate.. Right???
09/abb, 01:09 abb: What is the difference between high impedance and low imedance when dealing wih Differential and REF protections?
09/abb, 03:02 – abb”: Yes, this is right. And this is why we use REF together with Diff protection.
09/abb, 03:09 – abb”: The high imoedance method uses an impedance in series with operationg coil of the relay. The impedance value is chooen to damp the current of the relay under setting current in the case of worst fault (a fault near cts with one ct saturated). The low impedance method uses restraint coil to damp the current of the operating coil in the case of worst fault. The relay will trip when the operating coil current is maximum than the restraint coil current.
10/abb, 14:51 – Elec Engg:
10/abb, 14:51 – Elec Engg: Welcome Eng Abdur Rahman Siddiq
10/abb, 14:54 – abb: Welcome abdur rahman siddiq💐💐💐
10/abb, 14:56 -abb: Thank you everyone. Its a pleasure to be a part of this group
10/abb, 14:57 abb: Welcome bro 🌹
10/abb, 14:57 -abb: Thanks for the suggestion 🙂
10/abb, 15:07 – abb: Welcome my friend
10/abb, 15:15 -abb: 👍🏼
10/abb, 15:55 – abb “: Welcome my friend
10/abb, 18:36 abb: 👍🏻
12/abb, 03:59 -abb: This message was deleted
12/abb, 04:05 -abb: Hello ,any one have any idea about (Space2000) dcs from Arefa easbisally unix redhat 2.4.7-10
12/abb, 04:06 -abb:
12/abb, 04:06 -abb:
12/abb, 04:06 -abb: I have this problem when the unix startup
14/abb, 21:06 – abb changed their phone number to a new number. Tap to message or add the new number.
14/abb, 21:11 – abb changed their phone number to a new number. Tap to message or add the new number.
14/abb, 21:06 – abb changed their phone number to a new number. Tap to message or add the new number.
14/abb, 21:11 – abb changed their phone number to a new number. Tap to message or add the new number.
15/abb, 21:16 – abb:
16/abb, 00:01 – abb changed their phone number to a new number. Tap to message or add the new number.
16/abb, 00:12 – abb changed their phone number to a new number. Tap to message or add the new number.
16/abb, 00:01 – abb changed their phone number to a new number. Tap to message or add the new number.
16/abb, 00:12 – abb changed their phone number to a new number. Tap to message or add the new number.
16/abb, 02:48 -abb”: Hi all
in which case the operation of 52PD, pole discordance protection will be block?
16/abb, 03:05 – abb: By logic
16/abb, 03:06 -abb”: Excuse me in which conditions?
16/abb, 03:22 – abb: the pole discrepancy is an arrangement of controls, typical of the power switch
16/abb, 12:51 abb: It is already blocked by time .. if PD happen it must operate after 2.5 second.
16/abb, 12:56 abb: In which cases and configuration I must installed and program “inter trip signal protection “in case of transformer protection???
18/abb, 21:33 – abb: Anyone please share 4 volumes of books shared earlier Actually I got format my mobile so all data lost
18/abb, 21:41 – abb: Witch ones ?
18/abb, 21:42 – abb: [Power Systems Handbook Volume 3] J. C. Das – Power System Protective Relayi
18/abb, 21:43 – abb: I have volumes 1 and 4
18/abb, 21:43 – abb: Please share volumes 2 and 3
18/abb, 21:50 – abb: You can download it with Google all is available
18/abb, 21:59 abb: Can you share me volume 1 and 4
18/abb, 22:03 -abb:
19/abb, 11:37 -abb: Hi, PD trip function is normally blocked by any pre-scheduled single pole operation of CB like single pole auto reclosing or manual opening of a single pole of CB.
19/abb, 12:11 -abb: Y?
19/abb, 12:11 -abb: Does anybody have serial number for topology editor software or can edit SLD for Micom P741 rela
19/abb, 15:20 -abb”: Thanks It is true.
19/abb, 17:47 – abb: in the monopolar switch the discrepancy time must exceed the reclosing time.
19/abb, 20:05 abb: Dear friends/,
I have 7sj62 Siemens relay and it’s went to monitor mode then i tried to initialize the Dex file not succeed and activated device reset from the HMI after that it’s went again monitor mode and relay restarting automatically when power on
19/abb, 20:09 – abb: Hopefully by upgrading Firmware Version, it may work fine, kindly contact Siemens and ask for updated firmware version.
19/abb, 20:26 – abb: you must initialize the device with the digsi
20/abb, 12:47 -abb changed their phone number to a new number. Tap to message or add the new number.
20/abb, 12:47 -abb changed their phone number to a new number. Tap to message or add the new number.
20/abb, 12:47 -abb changed their phone number to a new number. Tap to message or add the new number.
20/abb, 13:55 abb: ؟
20/abb, 13:58 abb: Please share experiences and knowledge about “power swing blocking” in distance protection
21/abb, 13:08 -abb”: Hi guys, I need help setting up auto recloser on the sepam series 20 relay
21/abb, 18:11 -abb: In double bus bar protection what is the difference between single CT and Double CT method for bus coupler
21/abb, 19:46 – abb: This message was deleted
21/abb, 19:47 – abb:
26/abb, 18:57 – Elec Engg:
🌟Follow the group rules and objectives of the group
🌟This is an international group, just text in English
🌟Actively participate in the group.
🌟Don’t make any personal message to the group members
🌟 Post your message in one single chunk of text, don’t post every word or sentence in a new message.
🌟Advertisements, announcement of event of other groups needs approval from Admin before circulation (+917303437524 ).
🌟If any member is not following the rules, we have authority to remove from the group
🌟 No greeting and other personal discussion. Do not say good morning, good night, thanks etc.

To join our protection relay WhatsApp group, please send interest on Whatsapp

27/abb, 17:07 -abb: Hello,

What is the use of Line CVT in relays?? Help please..
27/abb, 17:14 – abb: Synchro Checj
27/abb, 17:14 – abb: Check
27/abb, 17:17 – abb”: Distance relay
27/abb, 17:17 – abb”: Metering
27/abb, 17:30 – abb: 67
27/abb, 17:47 – abb: How you test relay GE SR3 ,Thermal Overload fonction with alarm and trip ?
02/abb, 11:25 -abb”: Hi all
In DIGSI4 4.92, when i wanted to archive a file, this window was displayed and required a password.
02/abb, 12:29 -abb:
02/abb, 12:30 -abb:
02/abb, 12:30 -abb: And got this log file
03/abb, 17:43 -abb: There are some requirements for installing digsi like c++ ,have you installed them?
11/abb, 00:26 -abb: I need 12 units of above relay Fro where to get it?
11/abb, 00:36 -abb: REF615 FEEDER PROTECTION RELAY You can directly contact abb ltd.vadodara factory
11/abb, 00:46 -abb: Is there any address in India?
11/abb, 01:04 -abb: Narendra Sir.vcf (file attached)
11/abb, 01:05 -abb: @93700078728 please contact that person Mr. Narendra from Mumbai, India. for your requirement…
11/abb, 01:15 -abb: Ok thanks I contact tomorrow
14/abb, 18:27 – abb “: Hi
14/abb, 18:28 – abb “: Any members having experience in HV cable systems….???
14/abb, 19:12 – abb: ☝🏻
14/abb, 19:20 -abb: yes
14/abb, 20:17 -abb: How distance protection is functioning in HVDC transmission
14/abb, 20:29 – abb “: Transposing is required in long distance HV cables …? Or cross bonding is enough…??
14/abb, 21:51 – abb “: Both will be required
14/abb, 21:52 – abb “: Conventional distance protection is not applicable in HVDC system as the reactive part of impedance is absent due to zero frequency
14/abb, 21:54 – abb “: Thanks…. please share if you have any data on this
14/abb, 21:55 – abb: 👍
14/abb, 22:39 – abb “: Cross bonding is required to reduce the induced voltage and transposing is required to make C mutual equal between three phases… This job shall be done each 400meter and cross bonding shall be connected with earth by spicail box or with SVL + earth
14/abb, 22:39 – abb “: SVL mean shield voltage limiter
14/abb, 23:04 – abb “: Ok…. good description
14/abb, 23:05 – abb “: Thanks 👍
14/abb, 23:23 – abb: Thank you Eng. Ahmed
14/abb, 23:27 – abb “: Welcome 🤗
15/abb, 18:59 -abb: Any experience in testing siemens sync switch relay?
17/abb, 23:28 – abb:
17/abb, 23:29 – abb: When i tried to extract xml file from digsi, this error came. Kindly advise
17/abb, 23:30 – abb: It depends on how u extracted
17/abb, 23:30 – abb: There are 2 ways to extract
17/abb, 23:30 – abb: Which one was yours
17/abb, 23:30 – abb: How did you do it?
17/abb, 23:38 – abb: Both ways same error
18/abb, 11:25 -abb: Can anyone provide manual for Bus Bar protection Alstom MiCom Relay P741 ??
18/abb, 11:25 -abb: Thanks in advance
18/abb, 16:16 – abb: Any one know how test Startup Supevisn in REM 601 ?
19/abb, 15:47 – abb: How to tackle DC link over Voltage faults…. In VFD

Need simple solution….

Application HVAC chilled pumps
19/abb, 16:22 -abb: siemens VFD?
19/abb, 16:23 – abb: Yes
19/abb, 16:23 -abb: G180?
19/abb, 16:24 – abb: G120
19/abb, 16:24 – abb: No problem if in this case then
19/abb, 16:26 -abb: okay

  1. increase the DC overvoltage fault limit to 130%. default is 125%. but this solution may lead to stress VFD which may lead to some future issue.
  2. Update ur firmware to latest. It will work right away
    19/abb, 16:27 – abb: Hmmm
    19/abb, 16:28 -abb: old versions are not prone to motor oscillatations which incase u free run a motor may oscillate.
    in which frequency band u r facing over voltage?
    19/abb, 16:30 – abb: Really I just retrieved data from customer..
    But from where i can find it
    19/abb, 16:30 -abb: find firmware?
    19/abb, 16:30 -abb: siemens website.
    19/abb, 16:31 – abb: No , frequency band
    19/abb, 16:33 -abb: run the motor. increase speed slowly. ull start hearing hizzling sound in a particular band
    19/abb, 16:34 – abb: Okay
    19/abb, 16:34 – abb: Will update
    19/abb, 21:47 – abb”: Help pleaese

I cannot modify protection setting on ABB REF 542 plus manually or online through cable. I always got “setting not saved properly”. Can any one help?
20/abb, 09:36 -abb:
20/abb, 09:36 -abb: Protection key 🔑
20/abb, 12:50 – abb”: Hi. I used the key to change protection mode to SET. Is this enough? Should it be used also to change setting?
22/abb, 01:15 – abb: Please anyone can help me about password viewer for ABB Red 615
23/abb, 11:00 – abb: We are facing one error while installing ABB PCM 600…Can anyone help???
23/abb, 11:00 – abb:
23/abb, 12:18 -abb: Try to Separately download and install sql server and then install pcm
25/abb, 16:24 -abb:
25/abb, 16:24 -abb:
25/abb, 16:24 -abb: anyone knows about this error while exporting in. xml extension?
25/abb, 18:28 -abb:
25/abb, 18:28 -abb:
25/abb, 18:29 -abb: This is the 1600A breaker feeding the Chillar. Could anyone please tell me what would be the setting of this Breaker for Long, Short, Inst. & Ground?
25/abb, 18:36 -abb: DLL file is missing. Copy DLL file from another working laptop(C drive) or reinstall software.
25/abb, 18:40 -abb: For long char. Settings are 1.0 and time is 3.0.
25/abb, 18:42 – abb: Switch not clear but for L =1 and T=144s ;S=1.8;I=8;G=.4
25/abb, 19:13 -abb: Pl s help
25/abb, 19:13 -abb:
25/abb, 19:13 -abb:
25/abb, 19:46 -abb: Thanks alot!
25/abb, 20:44 – abb: Can anybody tell whats the max current in which we can use mccb only for load break
25/abb, 20:49 – abb:
25/abb, 20:51 – abb: Cable size 300sq mm
25/abb, 20:56 -abb: This message was deleted
25/abb, 21:26 – abb: Omg
25/abb, 22:34 – abb: That’s due to thermal effects. The thermal tripping point would go down after each tripping and if tripping takes place at 370 A after 2 hours, the MCCB might trip at 350 or even below (may) after every one and a half hour or even more earlier
26/abb, 06:45 – abb: Then whats the solutions shall we change this mccb if yes what would be the rating.any other solution instead of mccb because its placed in between transformer secondary side and LT panel.
26/abb, 10:02 – abb: Check your tightness of each bolt…. Properly torque it …
26/abb, 11:27 – abb: Phase sequence is ok my site is running fine load is 240 kw ..
26/abb, 11:33 – abb: 240 kw? rate amp is 408 amp
26/abb, 11:33 – abb: This is connected load but running is 225 kw
26/abb, 11:34 – abb: Can you test the MCCB
26/abb, 11:34 – abb: By primary injection
26/abb, 11:38 – abb: 383 amp
26/abb, 15:54 -abb:
26/abb, 15:56 -abb: There is over load, short circuit, instantaneous and ground fault
26/abb, 15:56 -abb: Ground fault its okay for me
26/abb, 15:59 – abb: Any party for Transformer repair in eastern region of India/Kolkata and near by
26/abb, 16:06 -abb: Srinivas Trafo Tech.vcf (file attached)
26/abb, 16:06 -abb: He is from Andhra Pradesh. But work wise he is senior most and purely technical person.
26/abb, 16:18 – abb: Ashok Hyd Sie.vcf (file attached)
26/abb, 16:19 -abb: By doing the method of primary injection
26/abb, 16:22 -abb: Yes I am doing by primary injection only
26/abb, 16:23 -abb: Can u tell me which combinations for overload test in primary injection
26/abb, 16:26 -abb: Single phase or phase to phase ???
26/abb, 21:48 -abb: You can use Phase to phase and phase to neutral for overload, instantaneous and short circuit. And phase to neutral for ground fault.
30/abb, 20:56 -abb: I can’t open IEC61850 staion in digsi 4.88
30/abb, 21:00 -abb:
30/abb, 21:02 – abb: Its okay. Dont open then
30/abb, 21:02 – abb: Close
30/abb, 21:04 – abb: May be target digsi file version differs
30/abb, 21:06 -abb: What should i do ?
30/abb, 21:06 – abb: Install Digsi 4.91 n try
30/abb, 21:10 -abb: Anyone who have Digsi 4.88 update?
30/abb, 21:13 -abb: It user Siemens-Configurator-Version
30/abb, 21:13 -abb: It use Siemens-Configurator-Version”>
30/abb, 21:16 – abb: Create Siemens User ID & u can download on Siemens webpage
30/abb, 21:21 -abb: I already have siemens ID. But i can found only 4.93
30/abb, 21:21 -abb: 4.88 service pack 1
30/abb, 21:22 -abb: I don’t found 4.88 service pack 1 or any 4.88 update.
30/abb, 22:17 – abbs: To Old version
30/abb, 22:57 – abb: ☺
31/abb, 02:15 -abb: what is the maxium length for line can use Teleproection in distance relay?
31/abb, 02:16 – abb: This message was deleted
31/abb, 02:16 – abb: Which relay? All relays have different limits
31/abb, 02:16 -abb: I know,
31/abb, 02:16 -abb: Siemens
31/abb, 02:18 -abb: 400km, 300km, 200km,100km,I talking about distane I can use Teleproection in dustance relay?
31/abb, 21:08 -abb”: Hi every body … does ABB REL 541 have an under frequency and over frequency protection???
31/abb, 21:13 -abb”: Sorry I meant ABB REL 511
31/abb, 21:47 – abb: No…
31/abb, 22:56 -abb”: Is there any way to activate this feature in this relay, Thanks 🙏
31/abb, 22:58 – abb: Anyone having working experience on tolon or edro laundry machines?
01/abb, 19:26 abb:
01/abb, 19:28 -abb: What is the default password for easergy studio 7.1.0?
01/abb, 19:29 -abb: In easergy studio 8.0.0 the procedure to connect to relay is different, has anyone been able to use that?
01/abb, 19:30 – abb: This message was deleted
01/abb, 19:31 – abb: AAAA
01/abb, 19:37 -abb: Thanks but it does not accept
01/abb, 19:37 -abb:
01/abb, 20:00 -abb: Use micom studio hashtag for crack.
01/abb, 20:30 – Elec Engg:
The group discussions are open 24/7. hit “Mute” on your Whatsapp group. You will still receive all the messages, but your phone won’t buzz or make a noise for every one of them
Now, please take a moment and introduce yourself completely : Your Name, Country, Company, specialty
01/abb, 20:37 -abb “: I am an hafiz saad mudassir from pakistan, me an electrical engineer specialization in power from UET lahore i got 3.7 CGPA my fyp is related to power system protection
01/abb, 20:41 -abb “: Dear all group members ; can u guide me about how to learn ETAP 16.0.0 software
01/abb, 20:53 – abb’: Hi Friends I am RAFFI from INDIA RELAY ENGINEER PDCS PROJECTS INDIA PVT LTD..
01/abb, 20:53 – abb: Abdiya😊😊😊
01/abb, 21:01 – abb: Welcome !!
01/abb, 21:16 – abb: Welcome 🙏🙏🙏all new members
02/abb, 21:00 -abb: Hiiii friends
02/abb, 21:02 – abb: Welcome 😊🙏🏻
02/abb, 21:32 – abb: Welcome !!!!
02/abb, 23:34 – abbs: Welcome friends!!!
03/abb, 06:45 -abb: How to calculate maximum through fault current to set the relay stable in bus bar protections ? Say voltage is 400kV.
03/abb, 08:05 – abb “: It was based upon your load
03/abb, 08:06 -abb: If exact load details are not available?
03/abb, 08:10 – abb “: I don’t have a clear idea, but have a suggestion u can decide with reference to your CT primary
03/abb, 08:13 – abb “: But normal load current may be more less than the CT rating
03/abb, 08:20 -abb: Ok
03/abb, 10:01 -abb: How to create CID & ICD files to ZIV 87T(CGL make) relay for integrate with SAS.
03/abb, 10:10 -abb:
03/abb, 10:41 -abb: You can get a rough idea by the maximum CTR of all the CT’s connected to the bus.
04/abb, 17:05 – abb: Please I need to communicate with argus 1 relay over current reyrolle by rs 485
04/abb, 17:16 -abb: Sorry i dont have any ldea
04/abb, 17:19 -abb:
04/abb, 17:19 – abb: Shoot your questions
04/abb, 17:22 -abb:
04/abb, 17:24 – abb: You can not extract. Only vendor can give you
04/abb, 17:25 – abb: You can edit in ziver cid
04/abb, 17:26 -abb: Sir I dont have CID, then how can i edit please tell mee
04/abb, 17:28 – abb: Arrange to take from vendor
04/abb, 17:28 – abb: If you dont have cid then get it from ziver cid soft
04/abb, 17:28 – abb: You can
04/abb, 17:29 – abb: Extract the CID via ZiverCid software. It will create the file
04/abb, 17:30 – abb: And btw you should not be touching ZIV relay if you do not have a basic idea of Ziv software
04/abb, 17:30 – abb: Because there are chances you will make the firmware corrupt
04/abb, 17:30 – abb: For which you have to make it hard reset, which is also not an easy process, short but risky
04/abb, 17:30 – abb: So please contact your senior on site & inform him about the situation
04/abb, 17:31 – abb: Otherwise once the relay is gone into dead mode, it wont be even hard reset by calendar method
04/abb, 17:34 -abb: Sir I have ZiverCID software then how can i extract there is any option???
04/abb, 17:37 – abb: I think go to zivercomplus and then setting and then edit. This file will automatically open in ziver cid
04/abb, 17:39 – abb: Ill tell you after going home. Don’t remember by heart. Ill check in the eve & update you..
04/abb, 17:40 – abb: Thats true. If he has cid module installed
04/abb, 17:42 -abb: Thank you sir.
04/abb, 17:42 -abb: I will try sir,
04/abb, 17:43 -abb: This message was deleted
04/abb, 17:44 -abb: Hi , Is anybody familiar with F650 ge relay?
04/abb, 17:46 – abb: What do you want to know?
04/abb, 17:46 – abb: Issue?
04/abb, 17:46 -abb: About Plc logic configuration
04/abb, 17:46 -abb: I couldn’t find any doc
04/abb, 17:47 – abb: Do you have filezilla?
04/abb, 17:47 -abb: Can we write logic for transformers changeover
04/abb, 17:50 – abb: Yessss… you can
04/abb, 17:50 – abb: How do you want to make it work as changeover?
04/abb, 17:51 -abb: No sir
04/abb, 17:51 – abb: You must have that
04/abb, 17:51 – abb: Download it
04/abb, 17:51 – abb: Use filezilla to extract CID
04/abb, 17:52 – abb: For extract you dont need any credentials
04/abb, 17:52 -abb: With definition of CB status and timer, ….
04/abb, 17:52 – abb: For download usename: ziv
And password: *ziv#
04/abb, 17:52 -abb: Okay sir ,
04/abb, 17:52 -abb: Thank you sir .
04/abb, 18:05 – abb: Welcome my friend
04/abb, 18:05 – abb: Where do you work
04/abb, 18:12 -abb: Siemens
04/abb, 18:16 -abb “: Which campus…
04/abb, 18:17 -abb: Gurgaon,India
04/abb, 21:43 – abb”: Hello! Please I have a problem with me fault recorder
04/abb, 21:43 – abb”: 7ke85 siemens
04/abb, 21:43 – abb”: In the Disgi5 software show fault in port E
04/abb, 21:43 – abb”: En front panel is active run (green) and error(red) Led
04/abb, 21:43 – abb”:
04/abb, 21:45 – abb”: I can’t communicate
04/abb, 21:46 – abb: This fault locator is not functional.
04/abb, 21:46 – abb: As long as the error led is glowing.
04/abb, 21:48 – abb”: Is correct
04/abb, 21:48 – abb”: But what is the solution?
04/abb, 21:49 – abb”: This problem have any solution
04/abb, 21:50 – abb: Yes… in CFC, the ladder is having a signal which is not masked
04/abb, 21:50 – abb: Remove that
04/abb, 21:51 – abb”: I can not inspect the relay, I can not communicate
04/abb, 21:51 – abb: Then WHAT ARE YOU DOING THERE? If you can’t even communicate with the relay you are having problem with?
04/abb, 21:52 – abb”: This message was deleted
04/abb, 21:53 – abb: You went there only to see the relay face? Relay is in error mode means the software is having inconsistency between source & destination
04/abb, 21:53 – abb: And you are saying
04/abb, 21:53 – abb: That you CANT INSPECT THE RELAY.
04/abb, 21:53 – abb: Where are you working?
04/abb, 21:54 – abb”: I can not communicate with the relay on the front panel does not allow me, and I can not communicate with the sicam
04/abb, 21:56 – abb”: I have knowledge communicating with the relays, but this is a case in which I can not review it because I do not allow any communication
04/abb, 21:58 -abb: If you have backup check cfc and send to the relay
And if you are new to siemens relay, better do as I say, right away
04/abb, 22:03 – abb”: When I want comunicate with the relay for local or remote but in two situation does not allow any communication the relay
04/abb, 22:04 – abb”: Thanks Mr
04/abb, 22:05 – abb: Thats because of ERROR in relay’s file. This relay requires Re-Flashing of firmware
04/abb, 22:07 – abb”: I am 20 year, but I want to learn electrical protections well
04/abb, 22:07 – abb: 20years old?
04/abb, 22:07 – abb”: Yes
04/abb, 22:07 – abb: Where do you work
04/abb, 22:08 – abb”: I am a practicing electrician in a generation company in America and I wanted to support my bosses if you know a lot about this topic.
04/abb, 22:43 – abb: I have an ocean of knowledge about this topic. Your bosses can always seek my technical support if they want..
07/abb, 16:04 -abb: hi, i was wondering if anyone could please tell me how to check the measurement of 2nd harmonic content in 7UT85 siprotec 5 device ?
08/abb, 15:57 – abb”: In RET 670 transformer differential relay.. I want to check the diff and bias current.. I found
11/abb, 10:49 – abb’:
11/abb, 11:28 -abb: Please solve my problem related to NR relay.
When AR has been operated in 400kv line then one end AR successful while other end line became trip while both end have AR enabled.then why?
11/abb, 11:34 – abb’: In other end it is operating in Pole discrepancy or AR lockout?
11/abb, 11:34 -abb: No
11/abb, 11:34 -abb: Direct trip
11/abb, 11:35 – abb’: Check all conditions for AR in other end
11/abb, 11:36 -abb: Checked but not found any reason
11/abb, 11:36 – abb’: In other end it is operated in Zone 1 or Zone 2?
11/abb, 11:36 -abb: Zone -1
11/abb, 11:36 – abb’: CB healthy status is ok ?
11/abb, 11:36 -abb: Yes
11/abb, 11:37 – abb’: It means ?
11/abb, 11:38 -abb: No PD and AR lockout operated .trip command goes to breaker
11/abb, 11:38 -abb: If suppose u assinged any DT send signal to remote end ?????? While AR From local end
11/abb, 11:38 -abb: Check the time setting at both ends
11/abb, 11:38 -abb: Of AR
11/abb, 11:39 – abb’: How it is possible ?
11/abb, 11:39 -abb: Yes
11/abb, 11:39 – abb’: 86 Operated ?
11/abb, 11:40 -abb: At one end it may be 1sec n other end 350ms
11/abb, 11:40 -abb: Checked
11/abb, 11:40 -abb: So by the time at one end AR operated it sent DT signal to other end
11/abb, 11:41 – abb’: Then you check the logic for 86 .
86 should not operate for zone 1 single phase fault
11/abb, 11:41 -abb: Due to which 86 operated
11/abb, 11:41 – abb’: DT received in remote end ?
11/abb, 11:41 -abb: Yes pls check
11/abb, 11:45 -abb: Carrier received at other end
11/abb, 11:47 -abb: And carrier send by our end
11/abb, 11:47 -abb: No DT received and send by both end
11/abb, 11:48 -abb: Carrier aided tripping sent from your end
11/abb, 11:49 -abb: No this is not correct .86 operated for single phase fault
11/abb, 11:49 – abb’: Ok. In remote end 86 is operated or not?
11/abb, 11:49 -abb: Yes
11/abb, 11:50 – abb’: Yes. Then check the logic for 86 in remote end.
11/abb, 11:50 – abb’: I think in remote end 86 is assigned for all faults
11/abb, 11:59 -abb: Yes
11/abb, 12:01 -abb: Check the time setting at both ends for AR
11/abb, 12:02 – abb’: Both end Fault in Zone 1 then ZCOM Trip will not happen. That is not necessary.
16/abb, 10:43 – abb: Sir, Anybody having 500MVA 400kV/220kV/33kV T&R Make Autotransformer 8 Channels FO based Tempr Hotspot details ?
16/abb, 10:50 – abb: Based on FBG?
16/abb, 10:50 – abb: Ya
16/abb, 11:30 -abb: Hi everyone
24/abb, 14:24 – abb: Please help, what type of fault its showing
24/abb, 14:24 – abb: This relay connected with 3 phase motor
24/abb, 14:26 – abb: STS light blinking
24/abb, 14:26 – abb: The motor run for a while and the stopped
25/abb, 06:51 -abb: Resistors are rated in ohms and wattage.. How to identify the short time withstanding wattage of resistor which is available in hand?. Generally how much ( thumb rule ) will be the short time withstanding capacity of resistor with respect to rated capacity?
The group discussions are open 24/7. hit “Mute” on your Whatsapp group. You will still receive all the messages, but your phone won’t buzz or make a noise for every one of them
27/abb, 12:02 – Elec Engg: Now, please take a moment and introduce yourself completely : Your Name, Country, Company, specialt
27/abb, 12:28 -abb: Hi good morning everyone , my self harish kumar chadalawada basically I m From india ,present working at Dubai as Transformer Testing engineer in Alfanar Company .
27/abb, 12:36 – abb: Great Sir
27/abb, 12:37 -abb: Thank you so much
27/abb, 13:11 – abb: Hi my name is amresh kumar pandit. I am from India and I am a diplomate student
27/abb, 13:15 – abb: Hi, my name is sami alahmadi. I am from saudia Arabia
27/abb, 13:16 – abb: HI
27/abb, 13:17 -abb: This message was deleted
27/abb, 13:20 – abb”: I am wasif from Pakistan, working at NESPAK
27/abb, 16:14 – abb: In which city
27/abb, 16:17 – abb: Hi, my name is sami alahmadi. I am from saudia Arabia, electrical supervisor in Afag Alkhadra est.
27/abb, 16:25 – abb”: Belongs from Gujra
27/abb, 17:01 – abb “: I’m Vikram Parekh
Working in System Protection as Manager – Power System Engineering.
We are providing all the testing and commissioning services in Electrical switchgears.
28/abb, 19:06 – abb: How this one become big day
28/abb, 19:07 – abb: We have to think before using electricity. Go green . Think before use
29/abb, 18:02 – abb: What is FPFM and FPSM in protection relay
29/abb, 18:04 – abb’: In which Protection?
29/abb, 18:04 – abb: Line
29/abb, 18:21 – abb: FPFM This is meaning feeder protection first main
FPSM This is meaning
Feeder protection second main
29/abb, 18:22 – abb: Set-1 and Set-2 right ?
29/abb, 19:00 – abb: Yes
29/abb, 19:15 – abb: Hi, we need support for setting calculations for transformer feeder which fed from 13.8 kv :
29/abb, 19:29 – abb: You are welcome, here in Saudi Arabia we used in feeder protection (Line) 2 relays, both make same function, have same setting
29/abb, 19:30 – abb’: Oh I got it.
29/abb, 19:31 – abb’: In India We will say Just Main 1 (21M1) and Main 2 (21M2)
29/abb, 19:31 – abb: Yes
29/abb, 19:34 – abb’: 👍🏻
30/abb, 19:56 – abb:
30/abb, 21:01 – abb”: This message was deleted
30/abb, 22:00 – abb: Can anyone give contact details of cast resin CT and PT suppliers in India
30/abb, 22:19 -abb: Narendra Sir.vcf (file attached)
30/abb, 23:26 – abb: Which make???
30/abb, 23:28 -abb: As per your requirement, he is having more contacts regarding purchase. So you I thought you can contact him.
30/abb, 23:38 – abb: Thanks
30/abb, 23:38 -abb: You are welcome.
04/abb, 14:54 -abb”: Hi all
Could you share
AEG PQ720 differential relay manual?
04/abb, 15:15 – abb: U can download it from internet
04/abb, 15:17 – abb: I want synchronize my server with a meinberg GPS in SICAM PAS .anybody can help me??
04/abb, 15:21 – abb: Are you facing any problem?
04/abb, 15:22 – abb: Share the problem. I might be of some help
04/abb, 15:22 – abb: Which model of GPS are you using for time sync?
04/abb, 15:23 – abb: M300
04/abb, 15:24 – abb: Yes I can not start NTP in my server
04/abb, 15:24 – abb: Wy dont u try SNTP?
04/abb, 15:25 – abb: Whats the networking protocol you are working on?
04/abb, 15:25 – abb: Asfar as i remember M300 is compatible with NTP & SNTP both
04/abb, 15:26 – abb: Firmware MUST be updated
04/abb, 15:26 – abb: NO
04/abb, 15:26 – abb: NTP
04/abb, 15:26 – abb: What? NTP is NOT A NETWORKING PROTOCOL MY FRIEND
04/abb, 15:27 – abb: Oh, my network protocol is Ethernet
04/abb, 15:29 – abb: Shall I do specific setting in SICAM PAS for time sync?
04/abb, 15:29 – abb: Ipv4 or v6?
04/abb, 15:29 – abb: Yes ulll have to
04/abb, 15:29 – abb: Which country are you in?
04/abb, 15:30 – abb: IPV4
04/abb, 15:30 – abb: IRAN
04/abb, 15:30 – abb: Give me ur system with time viewer
04/abb, 15:30 – abb: If u have
04/abb, 15:31 – abb: Now I,m in home.
04/abb, 15:32 – abb: Can you send me a helpful manual?
04/abb, 15:33 – abb: You can download from net please
04/abb, 15:34 – abb: Ok thanks
05/abb, 08:34 – abb: Sir,

Siemens Siprotec 7SS52 Busbar Bay Unit in error & alarm mode, after removing & Connecting Aux., DC supply, it will comes in Run mode & after 30min again the BBU goes to error mode.

What is the solution for this problem
05/abb, 13:27 -abb”: Initialize main unit and bay unit from software or menu.
05/abb, 13:59 – abb: Reseted MCU still having same problem
07/abb, 13:54 -abb:
07/abb, 13:55 -abb: Hello need some help on this error. Relay P643 Alstom make
07/abb, 13:55 – abb’: Communication error
07/abb, 13:56 -abb: How to solve it
07/abb, 13:56 – abb’: First check Test Connection and then proceed
07/abb, 13:57 – abb’: In test connection select the correct port in which your serial cable is connected.
07/abb, 13:58 -abb: Port is verified but still error shows while communication.
07/abb, 13:58 -abb: We had used 2-3 converters but same error observed
07/abb, 13:59 – abb’: Then change the port and try once
07/abb, 13:59 -abb: Ok will try that
07/abb, 13:59 – abb’: Which converter you are using ?
07/abb, 13:59 -abb: BAFO
07/abb, 13:59 -abb: And another is local make
07/abb, 13:59 – abb’: Ok
07/abb, 14:00 – abb’: Try with different port once
07/abb, 14:00 – abb’: You are from ?
07/abb, 14:00 -abb: This error comes only when you are sending right?
07/abb, 14:01 -abb: Popular switchgear Pvt Ltd Vadodara
07/abb, 14:01 -abb: Yes
07/abb, 14:01 – abb’: Ok Fine
07/abb, 14:01 -abb: Select only settings and not psl then send
07/abb, 14:01 -abb: Tried but not working.
07/abb, 14:02 -abb: Sir, port changed but same error occurred.
07/abb, 14:02 -abb: Try to use different converter other than you have
07/abb, 14:04 -abb: We have 2 converter same error for both the converter
07/abb, 14:04 -abb: If it has ethernet on back side of relay you can use that also
07/abb, 14:04 -abb: Okk
07/abb, 14:04 – abb “: Which software you are using…??
07/abb, 14:05 -abb: Agile v1.3.1
07/abb, 14:05 – abb “: New relay or old one..??
07/abb, 14:05 -abb: New relay
07/abb, 14:06 – abb “: Try with easergy
07/abb, 14:10 -abb: Ok sir
07/abb, 23:49 – abb “: Problem solved…??
07/abb, 23:50 -abb: Changed port advance settings. Solved now
07/abb, 23:50 – abb “: Ok
08/abb, 05:08 – abb’: 👍🏻
08/abb, 15:35 – abb:
09/abb, 09:49 – abb’: Anybody Having Settings Calculation Sheet for GE Make D60 Distance Relay ?
09/abb, 12:47 -abb: What have you changed
09/abb, 13:47 -abb:
09/abb, 13:47 -abb: Advance settings
09/abb, 14:41 -abb: 👍🏻
11/abb, 10:33 – abb: Can any one inform that in Schneider which software is available for checking Goose(IEC-61850) Signal ?
11/abb, 12:04 – abb:
11/abb, 12:38 – abb: The password of protection relay type p143 has been modified is there any way to restore the dafault password back again.
11/abb, 13:10 – abb:
11/abb, 13:29 – abb: Thanks
11/abb, 15:10 -abb: Hello
11/abb, 15:10 -abb: why when the change between some tabs in kvgc relay is blocked
12/abb, 16:05 – abb:
12/abb, 16:07 – abb:
12/abb, 16:07 – abb:
12/abb, 16:36 – abb’: NIC Card faulty
12/abb, 16:36 – abb’: Replace with new one
12/abb, 17:20 – abb: Reason for this problem is IEC61850 Support configuration file is not available in relay at the moment.
13/abb, 13:42 – abb: I want to start NTP in my server but system shows erorr.
anybody can help me?
13/abb, 13:42 – abb:
13/abb, 13:42 – abb:
18/abb, 18:10 – abb: Can anyone define “breaker abnormal alarm” in signal list
18/abb, 18:11 – abb: Cb abnormal can be given by spring not charges, or Sf6 pressure or TC not healthy
18/abb, 18:11 – abb: Make or gate & give final op as cb abnormal
18/abb, 18:14 – abb: 👍
18/abb, 18:17 – abb: +Local sector
18/abb, 18:17 – abb: Selector
18/abb, 18:18 – abb: 👌
18/abb, 18:18 – abb: Polo discrement
19/abb, 16:20 -abb: When programming Non directional over current test in Omicron .. getting Out of rancge error. How do correct it..
19/abb, 16:20 -abb:
19/abb, 16:21 -abb:
19/abb, 16:22 -abb:
19/abb, 16:23 -abb: CT Secondary 5 Amps..
19/abb, 16:26 -abb”: I guess you write wrong number to CT primary/secondary ratio at device settings. Check again pls.
19/abb, 16:37 – abb “: This message was deleted
19/abb, 16:42 – abb “: Use CMC 356….
19/abb, 16:44 – abb “: I think 256+ will not deliver this much.
19/abb, 17:50 -abb: Check the max amps settings in test object details.
20/abb, 02:14 -abb: use 3x25A setting. Parallel three current injectors with other 3. This would provide 25A per phase. Ur requirement is 12.88A thats why its showing out of range.
21/abb, 15:21 – abb’:
21/abb, 15:23 -abb: Please check connection setting….and select proper port number and baud rate by looking in to device manager
21/abb, 15:26 – abb’: Everything is correct only
21/abb, 15:30 -abb: Check test correction once or use another serial cable
21/abb, 17:23 -abb: Check earthing of relay as well as your laptop charger.
21/abb, 18:13 – abb: Check the communication port configuration from communication menu usually this error appear due to wrong port selection and configuration
21/abb, 19:39 – abb’: Ok ok
21/abb, 19:39 – abb’: Ok
21/abb, 21:00 -abb: This message was deleted
23/abb, 16:35 – abb’:
23/abb, 17:49 – abb: Yes,you uploaded the wrong menu text file to the IED.
To make it normal you need to send the right default menu text file via parallel port again or updating the same firmware will make the IED to go default settings and menu text.
If you are planning for firmware update make sure that ied is not in service.
23/abb, 18:02 – abb’: Ok bro. After uploading default menu text now it is normal.
23/abb, 23:57 -abb”: Hi all
24/abb, 00:01 – abb: You need to use Micom S1 Agile by Alstom (latest version 1.3.1 by GE) for Micom P443 Agile make relay
24/abb, 00:03 -abb”: I installed the version1.2 but it’s not be updated data model from the web?
24/abb, 00:09 – abb: I do not know why you are not able to download the data model using data model manager.
May be slow network connection.
24/abb, 00:10 – abb:
24/abb, 00:12 – abb:
24/abb, 00:13 -abb”: Thank you very much
24/abb, 00:18 – abb:
24/abb, 19:23 -abb: I m getting this error while install digsi4.93
24/abb, 19:23 -abb: I had V4.92 loaded and it deleted it. I tried again without V4.92 loaded but got this same error.
25/abb, 00:48 – abb”:
25/abb, 01:32 – abb:
25/abb, 02:43 – abb”: thanks
26/abb, 00:44 – abb: Do we require to test , “inter trip” during end to end testing of line differential function. Or only for distance
26/abb, 20:31 – abb’: Yes you have to check
27/abb, 17:11 – abb: Is someone from ERL ???
27/abb, 17:16 – abb’: Ya my senior is working
27/abb, 17:41 -abb”: Hi all I want to implement Autorecloser in PSL and assign an output contact to it (for Micom Agile p443). Which output logic DDB signals, Should i use?
28/abb, 17:47 – Fatima:
28/abb, 19:21 -abb”: Hi all
28/abb, 19:21 -abb”:
04/abb, 10:20 -abb”: Hi all
04/abb, 14:00 – abb: You can use pcm 600
05/abb, 19:27 -abb:
08/abb, 19:49 – abb’: Anybody having Digisi 4.93 download link ?
Please share the link or mail me @
10/abb, 21:13 -abb: Hi, need some help with PCM600 V 2.9. I sucessfully added a relay REG 630 ver 1.3 to it and also read the parameters from the relay. However when I try to debug the logic, its giving an alarm that configuration has changed. Any one knows the possible reason?
10/abb, 23:54 -abb: Guide me how we use spd .how many types of spd
12/abb, 13:11 – abb:
12/abb, 13:12 – abb: I found this error
12/abb, 13:12 – abb: Can any one help?
12/abb, 13:14 -abb “: @919428722864 which software u interface???
12/abb, 13:14 – abb: Digsi
12/abb, 13:21 – abb: Digsi4.92
12/abb, 17:03 -abb”: Delete and reinstall usb driver.
18/abb, 11:21 -abb: Hi everyone
can anyone help me in this issue.I am configuring IEC Here are my settings relay subnet: laptop IP: now if i put relay IPs from to, i get the response from it.
but to arent working.
18/abb, 11:22 -abb: what could be the solution. there is no subnetting, y is it restricting me to 92 devices only
18/abb, 11:27 -abb: and its not just one relay, all siprotec5 are doing the same
18/abb, 11:55 – abb: Subnet must be same
18/abb, 11:55 – abb: Whats the subnet in switch?
18/abb, 12:08 – abb: Relay sunet and switch subnet must be same
18/abb, 13:11 -abb: does a switch has masking? i dont think so
18/abb, 13:11 – abb: Every switch has IP & Mask
18/abb, 13:12 – abb: If you know the ip address of switch
18/abb, 13:12 – abb: Type in ur browser and there u can also check subnet mask
18/abb, 13:12 – abb: Which switch u r using??
18/abb, 13:12 -abb: that is something diff
18/abb, 13:13 -abb: that is just to access the switch conf
18/abb, 13:13 -abb: the ports arent assigned to any VLANS
18/abb, 13:13 -abb: so no need of that
18/abb, 13:14 – abb: It is linked with relays communication, the relay fiber would be connected to switch, if both are not synced, communication with IEC wont work
18/abb, 13:14 – abb: You can check that as a part of trouble shooting
18/abb, 13:14 – abb: Rest as you like!
18/abb, 13:15 – abb: Dznt matter
18/abb, 13:17 -abb: brov its working with IPs 1-92
18/abb, 13:17 -abb: not above.
18/abb, 13:26 – abb: Thats what m saying na, may be other switch has different subnet due to which relay wont be accessible with laptop IP
18/abb, 13:36 -abb”: Hi all
18/abb, 13:36 -abb”: What is wrong?
18/abb, 13:36 -abb”:
18/abb, 13:36 -abb”:
18/abb, 14:16 -abb”: Install device model.
18/abb, 14:16 -abb”: That relay model is missing on your software.
18/abb, 14:18 -abb: Hi all,
20/abb, 02:35 -abb”: This message was deleted
20/abb, 02:42 -abb”:
20/abb, 02:58 – abbs: You have a DIGSI 4.91 or older version?
20/abb, 02:59 – abbs: You need a previus version to DIGSI in you PC.
20/abb, 03:07 -abb: Hi. How can see the learning videos of digs4 about working with it? I’m a beginner 🙏
21/abb, 19:03 – abb: Hi any material/ tools to learn pcm600 quickly
21/abb, 19:05 – abb: Refer Pcm600 product manual to understand various tools
21/abb, 19:05 -abb”: Pcm600 is connection software, not much to learn. Learn your relay model’s configuration.
21/abb, 19:51 – abb: 👍
22/abb, 06:37 -abb: Hello Engineers, if anybody have “The Relay Testing Handbook” Principle and Practice by Chris Werstiuk. full pdf. Please share
22/abb, 11:36 abb: Please share more details such as pulication and issue date
22/abb, 14:54 -abb: I have facing some issue in Micom p642 agile regarding fault recording trigger. Relay dont trigger at the time of differantial trip so please help me for it i have try all the option for the fault trigger all other faults are trigger but when only differantial protection trip at that time fault is not trigger or on graph was generated. Please help me for thi
22/abb, 16:16 -abb: I will send it to you.
22/abb, 16:16 -abb: I sent it some times ago. Didnt I?
22/abb, 16:18 abb: Could you please share it in the group. I need it too. Thanks
22/abb, 16:21 -abb: Could you please share again?
22/abb, 22:47 – abb: Can you send it again
22/abb, 23:09 -abb: I will upload it
22/abb, 23:11 – abb: 👍
24/abb, 14:03 – abb:
24/abb, 15:38 abb: Thank you so much
26/abb, 02:03 – abb: Any one could send me a link for higher version of etap than 12.6
26/abb, 07:28 abb:
26/abb, 07:47 -abb “: Its not available….at that time to this web……
26/abb, 07:48 -abb “: Offcouse available versions of ETAP 12.6 & 16.0.0
26/abb, 08:28 -abb: Hi any one configured SEL RTAC 3555
26/abb, 08:29 -abb: One doubt.. Micom relays and SEL RTAC connected in same network.. is it possible via RTAC , DR files from Micom relays can be downloaded
26/abb, 11:24 – abb: Thanks
26/abb, 11:24 – abb: Thanks for feedback
28/abb, 09:47 – abb’:
28/abb, 09:48 – abb’:
28/abb, 12:58 – abb:
28/abb, 17:07 -abb “: Dear All Members
I hope that u r all doing well
Kindly mention some points about this question
*future scope of power system protection…..

  • future scope of relay coordination…
    28/abb, 17:10 -abb “: What innovation is required in relay coordination….
    28/abb, 17:11 -abb “: I am waiting for ur feedback
    28/abb, 17:19 – abb: Relay ct module failure
    28/abb, 17:27 – abb’: Thanks
    29/abb, 19:47 – abb: If anybody have PDF book of the relay testing handbook: end-to-end testing kindly forward
    29/abb, 20:09 – abb:
    29/abb, 20:10 – abb: Thank you so much
    29/abb, 21:56 -abb: Hi , anybody having protection relay panel O&M manual of any Kv level..Pls share if U have..
    30/abb, 01:41 – abb”:
    30/abb, 10:04 -abb:
    30/abb, 10:04 -abb: Please don’t touch any electric pole especially when it’s raining. Please pass this msg to your dear and near ones.
    06/abb, 11:47 -abb: Why nobody dont help that poor woman
    06/abb, 17:21 – abb: ?
    06/abb, 17:21 – abb: Hello
    Any one knows how to test Themal protection in ABB REM 543
    07/abb, 12:07 – abb: Mlfb stands for??
    07/abb, 12:24 – abb “:
    07/abb, 12:32 – abb: Thank You so much
    07/abb, 15:59 – abb’: How to change CT Ratio in secure Energy Meter ?
    10/abb, 01:02 -abb”: Hi everybody
    Could you share P441 manual for Areva brand?
    11/abb, 02:01 – abb: I need software for micom p 741. Remote hmi. Please
    11/abb, 02:47 – abb:
    12/abb, 18:29 – abb: Hi team
    Good evening
    12/abb, 18:30 – abb: We have a spl situation
    When DC Source 1 is failed our Breakers got tripped
    What could be the reason for the same ?
    12/abb, 19:19 – abb: Check CTD
    12/abb, 19:19 – abb: Please share the control diagram of the breaker with us
    12/abb, 19:20 – abb: Selective tripping?
    12/abb, 20:41 – abb: undervoltaghe shunt
    12/abb, 21:54 – abb: Kindly how i test REF in 7UT612 siemens
    13/abb, 21:06 – abb: with 1 phase current inject
    13/abb, 22:56 – abb:
    13/abb, 22:57 – abb:
    13/abb, 23:02 -abb: This wire for voltage equalizing so CT body will be same voltage of bus bar .if not connected will cause floating voltage for CT body and resulting partial discharging.
    13/abb, 23:02 – abb: I think it’s capacitive leakage wire to connect to the capacitive indicator.
    You can eliminate capacitive insulator if your CTs have this capability(capacitive leakage).
    13/abb, 23:04 – abb: Iam thanking you for your immediate response.
    13/abb, 23:04 abb: 👍👍👍👍👍And also it will help you to have less noise and corona.
    14/abb, 13:29 – You added abb and AA 3227 Gg X3
    17/abb, 11:37abb: Frnds anybody have VFD Test format or procedure?
    17/abb, 21:50 -abb “: Guys any body configure RSTP at micom p546 ??
    17/abb, 21:54 – abb: Dear admin pls add 9920033140 in this group
    17/abb, 22:11 – Elec Engg: Done🙏
    17/abb, 23:50 -abb: Thanks for joining me in this group
    18/abb, 12:11abb: Guys anybody have Test format for Diesel Generator?
    18/abb, 12:51 -abb: Anybody please help me for the protection of IT devices like server or switches etc…
    19/abb, 11:38 – abb’: How to Check online Measurements in ABB relay through PCM software?
    19/abb, 11:44 -abb:
    19/abb, 11:47 – abb’: Thank you
    19/abb, 12:16 – abb:
    19/abb, 12:17 – abb:
    19/abb, 12:17 – abb:
    19/abb, 12:17 – abb:
    19/abb, 12:17 – abb:
    19/abb, 12:17 – abb:
    19/abb, 12:17 – abb:
    19/abb, 12:18 – abb: Can anyone tell what could be the reason for battery blast in dg during Cranking
    19/abb, 13:02 -abb: Short circuit on crank cable or in crank
    19/abb, 13:03 -abb: Second reason crank can be stuck or engine
    19/abb, 13:11 – abb: How to calculate stall rotor time in in SIMOCODE ?
    19/abb, 16:31 -abb: Use VRLA type to avoid blast
    19/abb, 17:25 – abb: This this battery is 12V;180AH Tata make almost 2.5 years old used to crank 415KVA Dg
    19/abb, 17:31 – abb: Is there any pole calibration happen in ACB for any make to close all pole at the same time??? And if happen then how it’s done??
    20/abb, 17:57 – abb: Urgent Require for Experienced Protection Engineer 8yrs experience location:Mumbai
    20/abb, 18:21 – abb”: Why we use coreopsis conductor inside tubular conductor?
    23/abb, 00:15 -abb”:
    26/abb, 10:09 -abb: If anyone facing this issue in siprotec 5 BCU(6md86),after restarting the device then manually operate the master trip relay(86.1&86.2),that same time given reset command from SCADA but its not getting reset.anyone facing this issue please ping meee
    29/abb, 19:33 -abb:
    02abb, 04:06 – abb: Interested …
    02abb, 18:20 – abb:
    11abb, 02:06 -abb: while communicating ABB relays, how do I know which versions of PCM I need to use ? ( 2.6 or 2.9)
    11abb, 07:31 – abb:
    11abb, 09:00 -abb: Thank you
    11abb, 12:10 – abb:
    11abb, 12:11 – abb: what is 50fu
    11abb, 12:11 – abb: ?
    11abb, 12:11 – abb:
    11abb, 19:53 – abb: Backup Breaker , fuse fail
    12abb, 18:36 -abb: Hello I’m looking for device like Omicron Cpc 100
    12abb, 18:37 -abb:
    12abb, 18:37 -abb: Any one can help me?
    12abb, 18:37 – abb “: Location….?
    12abb, 18:37 -abb: Libya
    12abb, 18:39 – abb “: To purchase or rental…??
    12abb, 18:41 -abb: This message was deleted
    12abb, 18:42 -abb: Purchase
    12abb, 18:44 – abb “: I can give the mail ID of Omicron dealer in Oman. Just send an enquiry to them.
    12abb, 18:45 -abb: How much it cost plz?
    12abb, 18:46 – abb “: Jacob Joy | GIS Oman
    12abb, 18:47 – abb “: Approx 45000 USD in Oman…
    12abb, 18:59 -abb: please visit too
    12abb, 18:59 -abb:
    12abb, 19:25 -abb:
    12abb, 20:06 -abb: Yry TRAX from Megger
    12abb, 20:07 -abb: Try *
    12abb, 20:38 abb: 👍👍👍👍
    16abb, 23:51 -abb”:
    16abb, 23:51 -abb”: What might happen this insulator failure?
    17abb, 16:53 – abb”: sepam 80 fails to operate shows maintenance key 1. any ideas?
    26abb, 11:11 – abb:
    26abb, 13:24 -abb: Converter issue
    26abb, 13:35 – abb: Which converter? Relay is communicating on Ethernet/LAN
    26abb, 14:32 -abb “: In VT secondary injection. How to calculate phase to phase voltage in unbalanced condition? Eg.: we inject 20V in R phase & 40V in Y phase. What should be the phase – phase voltage. In actual condition multimeter reads 53V. how to prove it theoretically.
    26abb, 14:33 -abb: vector sum
    26abb, 14:36 -abb “: Can you please elaborate.
    26abb, 14:49 abb:
    26abb, 14:51 -abb: Ip1(cosPhy+i sinPhy) + Ip2(cosPhy+ i sinPhy)
    26abb, 15:05 -abb “: Values are not matching.
    26abb, 15:08 -abb “:
    26abb, 15:15 -abb: Dear friends how to calculate operating region of directional over current and earth fault relay
    26abb, 15:42 -abb: u cant add real and imaginary part
    26abb, 15:43 -abb: I= 2root ( real sq + imag sq)
    26abb, 15:43 -abb: this is how u add real and imaginary part
    26abb, 17:23 -abb: Can anyone please help me providing XRIO converter for RED670 V2.1.0? I’ll be grateful
    30abb, 12:32 – You addedabb
    31abb, 10:19 abb:
    02abb, 09:57 – abb: This message was deleted
    02abb, 16:31 – abb:
    02abb, 16:31 – abb: Can anyone tell me the meaning of the number mentioned in the box?
    02abb, 18:41 -abb: Order information i believe
    03abb, 07:33 – You added abb
    07abb, 09:18 abb: Does anyone work in Wind farms or Wind mill ? I need RDS-pp codes for equipments used in wind Power plant.
    07abb, 09:18 abb: RDS-pp is Reference Designation system for power plants
    07abb, 09:19 abb: Any help would be appreciated!!! cheers
    07abb, 09:21 – abb: is tht a grid code?
    07abb, 10:07 abb: no, power plant equipments coding system
    07abb, 10:26 – abb: Dear all ,
    Any one having cracked version of ETAP with patch cord kindly share the link from where it can be downloaded
    07abb, 10:30 -abb “: ETAP 18.0 ver available….share.
    08abb, 09:02 – abb: I also need it.
    08abb, 09:23 – abb: MiCOM EXPERT
    09abb, 10:50 -abb: Digital kits like omicron, meggar can inject voltages and currents of desired magnitudes.
    14abb, 23:45 -abb “: ETAP 12.6 & 4 version power system is available
    14abb, 23:53 -abb “: I will share the link of ETAP 12.6 tomorrow
    Best regards;
    14abb, 23:53 – abbs: 👍🏾
    15abb, 02:47 – abb: @18093904427 el ETAP lo mandamos a pedir antes de ayer con la gente de informática.
    15abb, 11:34 -abb “:
    15abb, 11:35 -abb “: ETAP 12.6 can download and also available download instruction video
    15abb, 11:37 -abb “: First this web can download if anyone cannot download then u move to this website
    15abb, 11:40 -abb “:
    15abb, 11:41 -abb “:
    15abb, 11:54 – abb: 👍
    17abb, 18:52 -abb: Location
    17abb, 18:52 -abb: India
    17abb, 19:34 abb: City?
    17abb, 21:11 -abb: As a Protection Engineer you have to roam all around India for different projects
    24abb, 15:53 -abb:
    24abb, 15:53 -abb: I am getting an network error while downloading from server
    24abb, 23:29 -abb “: Follow this link to join my WhatsApp group:
    25abb, 09:24 – Elec Engg: This group is consist on Different nationality, religion’s, language, …
    25abb, 09:33 -abb “: A life awaits, be the one to save it! it takes less than a minute..
    Giving blood is a quick and enriching way to give back to your community.
    By donating blood, you can help families who have been in accidents or experienced trauma, mothers experiencing labor complications, fathers having heart surgery, children undergoing chemotherapy treatments, premature babies trying to breathe with tiny lungs, or grandparents suffering from severe anemia.
    In as little as few minutes, you can become someones unnamed, unknown, but all-important hero. Saving a life is noble work that starts very simply and easily.
    25abb, 09:38 – abb: Any budy know what is first pole clear factore in sf6 cb it is 1.3 writen on name plate of 220kv cb?
    30abb, 19:53 -abb:
    30abb, 19:53 -abb: Any one can explain CT sparking
    30abb, 19:54 – abb”: Looseness or open Circuit
    30abb, 20:07 -abb: Ok
    30abb, 20:08 – abb”: Isolate the system to avoid any mishap
    30abb, 20:09 -abb: Ok
    01/abb, 22:11 -abb”: Loose connection on side phases!
    01/abb, 22:13 -abb: Ok sir
    02/abb, 13:26 – abb: What is the main difference between low impedence and high impedence bus bar protection scheme ??
    02/abb, 23:07 – abb: High impedance

in the Low impedance relay nothing but biased differential relay in this we have the slopes to avoid relay operation from the through fault current and CT saturation condition also.
03/abb, 10:20 – abb: 👍
07/abb, 17:05 -abb: Could anyone tell me where we use RCCB & ELCB? What is the difference between these two breakers?
07/abb, 19:33 -abb: Follow this link to join my WhatsApp group:
07/abb, 19:34 -abb: 00923244032371 please add this number
07/abb, 19:59 – My Irancell Saeed Roostaee changed the group description
09/abb, 00:42 -abb: Hello everyone i need a Etape and ecodill softwer if avilable plz help me
09/abb, 01:04 -abb: Will confirm you tomorrow
09/abb, 01:31 – abb: I also need ETap
09/abb, 14:19 -abb “: Dear;
I have already share the link of ETAP software on the above with complete details for installation kindly check
Best wishes;
09/abb, 14:53 -abb: Thank u but i join the group yesterday .
09/abb, 14:55 -abb: KBro if u have etape and ecodill softwer then share it kindly
09/abb, 15:07 – abb: Hello everyone,
Any one know about REV 615 ,
It is showing secondary current in measurements instead of Primary current.
We have set correct CT ratio.
09/abb, 15:11 -abb “:
09/abb, 15:12 -abb “:
09/abb, 15:16 -abb: 👍
10/abb, 17:21 – abb: Hello
I have to activate Indication Filter Time In chatter booking
But I can’t find it…
10/abb, 17:21 – abb:
10/abb, 17:21 – abb:
11/abb, 12:31 -abb:
11/abb, 14:52 – abb”: Try to delete the events recorder memory
13/abb, 02:01 – abb: Hey I need help can I find here someone work with elster A1800 consomption counting
13/abb, 04:06 – abb: Any one have auto manual change over test Format..
13/abb, 11:21 -abb: thanks dear
14/abb, 22:48 – abb:
14/abb, 22:48 – abb: CT connection is ok ?
14/abb, 22:49 – abb:
18/abb, 03:55 – abb:
18/abb, 16:06 -abb: Useful
18/abb, 16:06 -abb: Thank you so much
18/abb, 16:07 – abb’:
18/abb, 17:02 – abb”: check the serial cable. also try (test connection) from device list.
18/abb, 17:04 – abb’: Tried with other serial cable Problem solved.
Thanks for your support😊
18/abb, 18:01 – abb”: You are welcom
18/abb, 20:58 – You removedabb
19/abb, 10:21 – abb”: Can any one tell plzz” what is the criteria for Grounding control and power cables, should it be grounded from both ends or from one end”
And the reason for grounding if both sides or single side
19/abb, 11:38 abb: Hi.
1 core power cable shield must be grounded only from one side, otherwise transformation current with inducted to the shield.
I&C& signal cables as well. In this case the induction is from outside.
However, for 3core, 3phase cable it could be grounded in both sides
19/abb, 11:40 – abb”: what about multicore control cable
19/abb, 21:34 abb: In Siemens design which is used for many power plants , it is mentioned that only one Side must be grounded to prevent circulation current.
19/abb, 21:39 abb: 👍👍
23/abb, 23:42 – abb changed their phone number to a new number. Tap to message or add the new number.
25/abb, 01:10 abb:
25/abb, 05:07 – abb: Hi world some one can help me in F650 HMI with GE config
25/abb, 05:07 – abb: I need to made hmi with modbus protocol
25/abb, 05:09 – abb: I need .mdb data module
28/abb, 17:08 – abb:
28/abb, 17:22 – abb: Checn relay HMI
28/abb, 17:22 – abb: Should not b in Sub menu
28/abb, 17:23 – abb: Make it to the main menu page
28/abb, 17:49 – abb: Plz check the Technical key of the IED in software , is that compatible?
28/abb, 18:04 – abb: Check the report details in common read/write tool to get more information.
Note:It’s not recommended to do common read with lower version of PCM600 if the IED is configured with higher version of PCM600.
28/abb, 18:48 – abb: 👍
02/abb, 08:28 -abb:
02/abb, 08:32 -abb: If anyone know about this issue please revert me urgent.display error name is flashed v1.0,
02/abb, 16:02 -abb: For parallel operation, you need to synch both transformers first, then close the breaker
02/abb, 16:03 -abb: Changing load from one transformer to other,
02/abb, 16:09 -abb: Different tap positions mean different voltage levels (if both transformers are fed from same sourc
& in case of under-voltage, load will draw more current, that might result in OC Fault, over heating of cables.
02/abb, 16:11 -abb: Breaker may trip in second case but in first case, straight damage if you haven’t installed AVR. Breaker doesn’t care for Voltage, it only trips on high currents
02/abb, 16:13 – abb: But one transformer connected to load which has voltage 10.4KV
02/abb, 16:17 -abb: It mainly depends on uk% and load current. having enough data, you can simulate the Network using DigSILENT. In my experience you can parallel both transformer without worrying.
02/abb, 16:23 – abb“: Check impedance voltage persentage
02/abb, 16:23 – abb“: With in limit u can
02/abb, 16:24 – abb: How to check sir
02/abb, 16:24 – abb“: Check impedance voltage persentage at name plate data
02/abb, 16:24 – abb: Sir what is meant by uk
02/abb, 16:25 – abb: Ok Sir I will check it
02/abb, 16:25 -abb: Impedance voltage or short circuit impedance , actually
02/abb, 16:26 – abb: Ok Sir
02/abb, 16:26 – abb: Can u suggest me any documents regarding things
02/abb, 16:27 – abb“: Just impedance only not short ckt
02/abb, 20:16 -abb: When u have two transformers in parallel then you may have to look at the circulating currents that might flow when tap positions are not matching. Account for that circulation current as it will be an issue
02/abb, 21:55 – abb: Sir the same I read in a document due to low impedance in the transformer which has less tap position certain amount of current will circulate within the winding
but why? Sir
02/abb, 22:22 -abb: difference in impedance of the transformer more that 10% will have circulating current too. even if taps are same nd the voltages are same
02/abb, 22:23 -abb: go through any white paper written about paralleling transformers, ull have better idea
02/abb, 22:23 – abb: Ok sir
04/abb, 15:15 – My Irancell Saeed Roostaee addedabb
04/abb, 12:19 – abb: 66kv breaker CG make
04/abb, 12:29 -abb: Your new breaker has better specifications☺ and there is no problem.
04/abb, 12:49 – abb: Sir but our isolator was 31.5KA
Bus ACSR conductor short circuit capacity was 31.5KA
04/abb, 12:59 – abb “: There is no need for SC capacity coordination, your new breaker may be oversize but that’s not problem
04/abb, 13:00 -abb: 40kA/3sec means it can withstand up to 40kA that is higher than 31.5kA. if 31.5kA for your substation is ok, then 40kA is ok, too.
04/abb, 13:58 -abb: U can use
Not a problem higher capacity only.
04/abb, 13:59 -abb: Adnoc Gobi.vcf (file attached)
04/abb, 13:59 -abb: Hi admin Kidly add Mr. Gobi
He working in ADNOC
05/abb, 19:45 -abb: Welcome Mr Gobi
06/abb, 12:31 – abb’:
06/abb, 12:34 – abb“: Sir parallel operation done ?
06/abb, 13:02 – abb: Sir parallel operation done.Thanking you for remembering .
06/abb, 13:33 – abb“: What procedure please explain
06/abb, 17:15 – abb: Can any one have idea, what is mean by cross trigger input TFR ( fault recorder)
06/abb, 19:23 -abb: Cross triggering is used between TFRs to initiate recording all the TFRs and provides system wide dynamic recording e.g. Power swing
06/abb, 19:23 -abb: .
06/abb, 19:28 – abb: 👍
06/abb, 19:40 -abb: Join Prtection Relay 4 ” Zaigham ali:
06/abb, 19:42 -abb: Join Prtection Relay 4 ” Zaigham ali:
06/abb, 19:42 -abb: Join Prtection Relay 4 ” Zaigham ali: FYI only
06/abb, 21:57 – abb “: Hello Mr Zaigham an you please share the drawing of this connection
Is this job and new Bubar connection is retrofit job or all was a new supplied switchgear
06/abb, 22:04 -abb: Join Prtection Relay 4 ” Zaigham ali:
06/abb, 22:04 -abb: Join Prtection Relay 4 ” Zaigham ali:
06/abb, 22:04 -abb: Join Prtection Relay 4 ” Zaigham ali: Yes we have I will send you all documents Boklet
06/abb, 22:06 -abb: Join Prtection Relay 4 ” Zaigham ali: All new auppliied first time I seen and we are installing.
08/abb, 23:34 – abb: Any one knew, how to sync BCU RED670
08/abb, 23:47 – abb: This message was deleted
14/abb, 20:54 – abb ” changed their phone number to a new number. Tap to message or add the new number.
14/abb, 20:54 – abb ” changed their phone number to a new number. Tap to message or add the new number.
14/abb, 20:54 – abb ” changed their phone number to a new number. Tap to message or add the new number.
17/abb, 19:11 – abb: 11kv armoured cable, can be earthed in one end or it need to earthed at both ends
17/abb, 19:33 -abb: Join Prtection Relay 4 ” Zaigham ali: For what purpose. During termination? Otherwise for permanent Connection earthed in both ends
17/abb, 19:35 – abb: During cable end termination
17/abb, 19:35 – abb: And the cable was 300sqmm aluminum cable XLPE
17/abb, 19:36 – abb: 3core
17/abb, 19:37 -abb: Join Prtection Relay 4 ” Zaigham ali: Should be at both ends.
17/abb, 19:38 – abb: Sir what will happen if we earthed at one end
17/abb, 19:38 – abb: One side is enough
17/abb, 19:39 – abb: Any standards are there
17/abb, 19:39 – abb: Sir if any documents you have means kindly share me
17/abb, 19:42 – abb:
17/abb, 19:43 -abb: Join Prtection Relay 4 ” Zaigham ali: If after one year one side gland earth failure then 2nd side shoud be work.
Actually we use both ends for more safety
17/abb, 19:45 -abb: 👍❤
17/abb, 19:47 – abb: Good Idea
17/abb, 19:47 – abb: 🙏🏻
17/abb, 19:47 – abb: Thanking you sir For providing me this document
17/abb, 19:50 – abb: You are welcome, hope useful
17/abb, 20:03 – abb:
18/abb, 15:37 – abb: Please provide earthing in HT cable termination at both ends,must
18/abb, 15:37 – abb: in HT earthing is very important
18/abb, 15:44 -abb: Join Prtection Relay 4 ” Zaigham ali: Yes thanks
18/abb, 15:45 -abb: Join Prtection Relay 4 ” Zaigham ali: LT is at one side only.
04abb, 12:51 -abb:
04abb, 12:52 -abb: Any one have idea?
04abb, 20:31 -abb: In transformer slope testing what is Ibias calculation need to set in the omicron test
04abb, 20:33 -abb: Regarding generator differential slope test I have some doubts anybody free kindly ping me I will call you.
04abb, 21:13 -abb: What is IBias calculation equation to feed in the omicron differential characteristics for generator protection
05abb, 05:45 -abb”: Hi all For ABB 521 ver 2.5
When we send configuration to the relay we will face with syntax error at last step, what is the matter?
05abb, 06:22 -abb”:
05abb, 09:27 -abb:
05abb, 09:28 -abb: I hope above link helps
05abb, 10:33 -abb: What help do u need?
05abb, 10:34 -abb: Depends on what relay u are testing.
05abb, 10:36 -abb: In shot test you choose the points on the characteristic curve and the softwares tests only at those points. In search test u select the sweep for IBias e.g. 0.2 to 5 with a some intervals. This will create vertical lines on the characteristic curve and the test set will then determine the Idiff value on each of those lines.
05abb, 10:37 -abb: Test set will determine the Idiff value at which relay operates. Search is like making the test set determine whats the characteristic curve and if the searched point is within the tolerance limit then only the test is considered passed
05abb, 13:32 – My Irancell Saeed Roostaee removed AA 3052 Gg 9 Join “Pradip” eindia
05abb, 20:48 -abb: Hello
05abb, 20:49 -abb: Any one working on
05abb, 20:49 -abb: SVC capacitor protection
05abb, 20:49 -abb: I need help
06abb, 23:49 -abb: Thank you very much
07abb, 10:15 -abb: This message was deleted
08abb, 20:44 -abb: Is it possible to upload SIMARIS.APK ?
10abb, 00:03 -abb: Anyone here to help me, I have p443 distance relay(Micom schnieder make), I tested this relay in zone 1, but it also trips in zone 2 and zone 3 simultaneoulsy..and although I marshalled output contacts to trip..but it doesnot send tripping order to test set..anybody solve this issue
10abb, 00:10 -abb: Which test set are u using? Have u checked the current or voltage connections. Normally this happen when u are injecting current or voltage in reverse, means the relay is looking in reverse. Check whether reverse zone is enabled or not.
10abb, 00:11 -abb: omicron 356
10abb, 00:11 -abb: cmc 356
10abb, 00:12 -abb: U using distance module?
10abb, 00:12 -abb”: Check your trip contact type.
10abb, 00:12 -abb: And double check the psl file.
10abb, 00:13 -abb: 👍🏻
10abb, 00:14 -abb: I test this relay manually through test set not through laptop..I am using time module
10abb, 00:16 -abb: Ok. First confirm ur output relays are properly working and connections are Ok or not. Force them from Commissioning menu and check continuity using multimeter. Check ur wiring. U using dry connection or wet contact.
10abb, 00:17 – abb: Maybe relay SOTF function is on
10abb, 00:19 -abb: Good point. Ensure there is a prefault
time set on the test set. Normally it is 1 sec.
10abb, 00:20 -abb: I disabled sitf
10abb, 00:20 -abb: sotf*
10abb, 00:21 -abb: There are 2 issues. One its ur relay tripping on all zones. And second ur binary output feedback not reaching test set. Solve them one by one.
10abb, 00:24 -abb: ok I will try above mentioned points one by one..thanks for your guidelines bro👍
10abb, 03:06 -abb: Usually zone 1 is inside zone 2 and zone 3 (if all your zones are forward direction).
24abb, 13:48 – abb: Why we use shunt and series resistors for high impedance BB scheme ?
25abb, 00:30 – abb “: ‏Saudi Local Company looking for Substation Testing & Commissioning Engineers to work in their Projects across the Kingdom
25abb, 00:31 -abb: This message was deleted
25abb, 00:31 -abb: This message was deleted
25abb, 00:32 -abb: What will be the salary package
25abb, 00:32 – abb “: I just forward message received from Friends
25abb, 00:33 -abb: Ok
25abb, 00:33 -abb: Is there any data Center infrastructure Operation engineering job opening
25abb, 00:45 -abb: Wish you all Merry Christmas 🌲🎉🎈❤️🎉 🌲 and all the best for upcoming New year 2020
25abb, 01:23 -abb: Merry Christmas 🌹🌹
25abb, 07:23 -abb: Please suggest me
25abb, 07:23 -abb:
25abb, 07:23 -abb: How to fix this ?
25abb, 07:23 -abb: Digsi 5
25abb, 07:57 – abb: Kindly import communication protocol drivers
25abb, 11:04 -abb: Thank you
27abb, 10:30 -abb: While writing a date in upcoming year 2020 , we should write in its full format, e.g. 31/abb and not as 31/01/20.,bcoz anyone can change it to 31/01/2000 or 31/abb or in between any year to his convenience
27abb, 12:25 -abb: Thank you dear bro
27abb, 13:47 -abb: 👍🏻
27abb, 15:16 -h: 👍
28abb, 17:11 – abb: Friends. Can some one share me the download link for Schneider Micom P220 data model.
30abb, 12:49 -abb: Hi Gentlemen!
I would like to take the suggestion from you guys regarding one matter. We have one 13.8KV (15KV sys voltage) Switchgear. Due to increase in the connected load, we want to change the CT in one of its Cubicle. The new CT suggested by the Supplier having following Specs: *CT 300/5, Burden 15VA, 5P10, BIL 10KV. *
Now my question is the 5P10 & the burden suggested by them is correct for this MV Switchgear? I’ve seen some CT having 5P20. Where we will select 5P10 & 5P20? Also, do we need to replace the metering core as well as a load is increased?
30abb, 13:16 -abb: All CT replacement should have a CT CALCULATION ( sizing) according to circuit parameters. You should ask for this document first
30abb, 13:28 -abb: Ok. I will ask about it.
30abb, 13:29 -abb: Thanks
30abb, 13:56 abb: To say if it is match or not you need to know the maximum short circuit current and also you need to know your relay and cables burden because 5P10 means this CT will be stable and will not saturate in the range up to 10 times the nominal current and with 15 VA burden
If you calculate your actual burden then 5P10 might be equivalent to 5P20
02/abb, 10:57 -abb: Hi friends
I need one powergrid feeder scheme. Can anyone forward it
02/abb, 11:01 -abb: Kv rating pls
02/abb, 11:02 -abb: 400Kv
02/abb, 11:02 -abb: With busbar protection and LBB scheme
02/abb, 20:02 – abb: Hello brothers, if we have 1K ohm shunt resistors of 180W for high impedance cable diff prot. But need to change the resistors to 500 ohms as per settings , so how we can calculate watts for 500 ohms resisi
03/abb, 12:53 – abb: Thanking you sir,
03/abb, 12:56 -abb: This message was deleted
12/abb, 17:12 -abb: Hii
12/abb, 17:12 -abb: Anyone know where i can get the touchscreen panel for siemens lcd
12/abb, 17:12 -abb:
12/abb, 17:13 -abb: In uae
17/abb, 23:49 -abb“: Dear all
I am Zahra Adeli from Iran, RAF company. My specialties are: Relays test and commissioning, substation automation specially with 61850.
Glad to be a part of this group👍
17/abb, 23:54 – abb: Welcome to the group
17/abb, 23:55 – abb: Welcome !!
18/abb, 00:11 – abb “: 👏👏👏
18/abb, 00:15 – abb:
18/abb, 19:00 – abb: Thanks sr
18/abb, 19:02 – abb “: I think the definition af armautue is not exact and correct
18/abb, 19:02 – abb “: I was just skimming over the pdf and noticed that
18/abb, 19:03 – abb “: The armature is where voltage is induced in it
It can be either rotary part or stationary part of machine
18/abb, 19:20 – Elec Engg: Thanks for your feedback, this one is power plant dictionary and not electronic. Do we have any stationary armature in power plant machine? I haven’t seen
18/abb, 19:25 -abb: Alternator I guess?
18/abb, 19:29 – Elec Engg: 👏yes you right ❗thanks 🙏
18/abb, 19:53 – abb “: Sure we have
In synchronous generators
Armature is stationary
And the dc voltage is applied to the winding on rotor in order to have a rotating magnetic field
18/abb, 19:55 – abb “: It is more easier to have a stationary three phase output than having a rotating one
18/abb, 19:59 – abb “: Probably it is an technical dictionary
For practical uses
But in academic point of view,things are different
18/abb, 20:53 – abb“: And brushless synchronous generators have rotating armature.
18/abb, 20:55 – abb “: The rotating armature is mounted on the rotor in order to excite the generator’s field circuit
18/abb, 20:56 – abb “: I dont say that we dont have ratating armature
Im saying that the armature and the rotor are 2 different subjects
18/abb, 20:58 – abb “: I think basically there are only two terms… stator and rotor… depending on various conditions and requirements we use either stator as armature or field…. or vice versa…
18/abb, 20:58 – abb “: Exactly
18/abb, 21:00 – abb “: May be in a special type of machine the armature is mounted on the stator
And a the field circuit is on the rotor
18/abb, 21:00 – abb “: And for the other type
The reverse may be true
18/abb, 21:03 – abb “: Yes.. if there is a time varying magnetic field and a stationary coil… voltage will be induced in the stationary coil ….irrespective of stator or rotor … or field or armature… terminologies may differ as per circumstances
18/abb, 21:04 – abb “: This message was deleted
18/abb, 21:05 – abb “: Thanks for clarification
18/abb, 21:12 – Elec Engg:
18/abb, 21:12 – Elec Engg: Any idea about this fault
18/abb, 21:13 – Elec Engg:
18/abb, 21:24 – abb “: I think its not a network fault like short circuit
Its about the relay hardware itselt
As the title suggests
Hw error
18/abb, 21:24 – abb “: But thats what i think
Im not sure
18/abb, 21:45 – abb: Hw error relay has hardware problem
19/abb, 12:25 – abb: ؟؟
19/abb, 12:26 – abb “: Hello
I cant open the diagram
19/abb, 12:28 -abb: its a network topology for DMMs and Relays single ring with redundantancy characteristics for 61850 network
19/abb, 13:21 – abb: Sure it is,
but the question is the connection between HSR &RSTP is correct or not?
And can I use PT-G503 or other switches required?
19/abb, 14:12 – You added AA 6697 Esmaeili
19/abb, 14:22 -abb: i think u cant use different protocols in a single ring. But if u have a saperate ring connected saperately with the switch, there wont be any issue.
RSTP nd HSR can both will work fine.
about the switch PT503, if its an industrial switch, it will work fine.
19/abb, 14:23 -abb: i never worked on these switches. Rugged switchs are fine with these protocols and topology
19/abb, 14:51 – abb: Thanks for your help
19/abb, 15:28 – abb “: Hello everyone
We are looking for a company to upgrade existing ABB Microscada / DCS System Type: 800xA System version 5.1
Project Location: Saudi Arabia
21/abb, 10:32 – abb: Anyone having power substation safety guide/book/material
21/abb, 10:32 – abb: Please share
22/abb, 01:21 – abb: Anyone have activation key for doble software, please share
24/abb, 14:20 -abb: Hi everyone,
Pls share link for Eplan software with complete package if available with anyone
27/abb, 14:56 abb: Salam
27/abb, 15:28 – Elec Engg: Please read the rules and just text in English
28/abb, 01:34 abb: Hello, i don’t read your message please help me
28/abb, 01:35 – abb “:
28/abb, 01:37 – abb “: There are some rules
Including that people in group must text in English
28/abb, 01:37 – abb “: I dont know about the rest
28/abb, 01:37 abb: What are you on off position
28/abb, 01:37 abb: 😔
28/abb, 01:39 abb: You don’t conversation a boat electric or …
28/abb, 01:39 abb: 🤔
28/abb, 01:40 – abb “: We discuss more about protection
28/abb, 01:40 – abb “: And some related topic
28/abb, 01:43 abb: I don’t see Your old messages
28/abb, 01:46 – abb “: I think Its because you are a new member
28/abb, 01:48 abb: Okay
30/abb, 14:37 – abb:
30/abb, 14:37 – abb:
30/abb, 14:38 – abb: I am unable to connect through DIGSI
30/abb, 14:38 – abb: Can somebody guide me
30/abb, 14:44 -abb: What was the error
30/abb, 14:57 – abb:
30/abb, 15:00 -abb: Any fault is there
30/abb, 15:00 -abb: What is that LED glowing
30/abb, 15:02 – abb: Check com number of laptop in device manager—> ports
30/abb, 15:02 -abb: Change your laptop serial Port configuration
30/abb, 15:02 – abb: Select same com number in laptop and digsi
30/abb, 15:12 abb: Maybe you don’t installed device driver.
30/abb, 17:02 -abb: Please check the VD address in ur digsi
30/abb, 17:02 – abb: Ok Sir
30/abb, 17:25 – abb: Check your siprotecs drivers
01/abb, 12:45 – abb: Can any one tell what is password for the ABB 545
Feeder management relay
01/abb, 12:45 – abb: To access the protection setting and to change the settings
01/abb, 19:45 -abb”: This message was deleted
01/abb, 19:47 – abb: Can anyone guide about Generator Overcurrent with Voltage Restraint protection
01/abb, 20:00 -abb“:
02/abb, 00:00 – abb: Welcome dear
02/abb, 08:56 – abb: Thanks
03/abb, 23:18 -abb“: Question: in our dcs system we can get disturbance records of all relays but one. I checked the relay with ied explorer, cfg exists in the relay but the sbus don’t get it. The comtrade directory address and everything is fine. Can I use wireshark to see what’s happening to the file? I used mms filter, but I need more specific one. Does the file transfer through mms protocol at all? Can anyone guide me?
04/abb, 08:35 – You added AA 6792 Mohsen Mohseninezhad
04/abb, 09:41 – abb: We have AVR fed by PMG…can we disable Voltage Restraint or Voltage Controlled function
04/abb, 09:43 – abb: Kindly use wireshark and check this shall help u
04/abb, 14:16 -abb“: Sorry I’m not that expert to answer this,
04/abb, 14:17 -abb“: With which filter?
04/abb, 14:28 – abb: Can anyone in the group help on this
06/abb, 21:31 – abb”: What is the effect of ambiance temperature on SF6 gas pressure!
06/abb, 21:31 – abb”: Guage readings could be different in day and night timings? Specially in winters
06/abb, 21:33 – abb: Yes
06/abb, 21:33 – abb: Pressure will reduce in Winters
06/abb, 21:34 – abb”: Can u explain?
06/abb, 21:35 – abb: And specially in nights…u might face an alarm or trip in night and that alarm may go away in morning
06/abb, 21:37 – abb: 7 bar at 20 degree
06/abb, 21:39 – abb:
07/abb, 13:24 abb:
07/abb, 14:20 -abb:
07/abb, 15:07 – abb “: Who is the writer?
07/abb, 15:42 abb: Hemchandra Madhusudan Shertukde
07/abb, 16:00 – abb “:
07/abb, 16:10 abb: Thanks
07/abb, 16:13 – abb. “: Anyone who is testing high voltage equipment?
07/abb, 16:43 abb: 👍thanks
07/abb, 16:45 abb: Which one?
07/abb, 16:52 – abb “: You’re wellcome
07/abb, 16:52 – abb “: 🌹
07/abb, 22:19 – abb: 👍🏼
08/abb, 15:48 – abb changed their phone number to a new number. Tap to message or add the new number.
08/abb, 18:20 -abb: Does anyone know how to use wire shark software
08/abb, 18:20 -abb: Actually from alstom bcu to siemens bcu one goose signal is coming
08/abb, 18:21 -abb: In Siemens bcu signal is coming as not valid
08/abb, 18:21 -abb: Suggest me any good option for checking goose signal
08/abb, 18:23 -abb “: Is it c264?
10/abb, 13:19 -abb: Nope, sometimes it produces noise due to abrupt movement of device, but that’s false alarm.
When there would be leak, you’ll listen continuous loud alarm
10/abb, 13:29 -abb: Hello to all members. I’m Ali Karimi from Iran, Tehran. I work at SEE1999 company.
I work on overall design of MW solar PV plants.
10/abb, 13:49 – abb “: 🖐
10/abb, 14:10 -abb: 🙏
10/abb, 14:25 -abb: Welcome mr karimi
10/abb, 15:06 -abb: Welcome Mr.Ali
10/abb, 15:08 -abb: Yes
10/abb, 15:16 -abb: Thanks all
11/abb, 12:09 abb: Hello

Can anyone share easergy studio software password
13/abb, 04:08 – abb: The program is free from schneider website
13/abb, 08:31 abb:
13/abb, 08:52 – abb: AAAA
13/abb, 12:29 – abb:
13/abb, 12:31 – abb”: This is common.. Try to reinstall it.. Or try to install Schneider s1 studio
13/abb, 12:32 – abb: Can anybody help me? This switch have been faulty and I dont know why.
13/abb, 12:38 -abb: If ur having a dual DC source then check the healthiness of both DC supplies
13/abb, 12:39 -abb: In some cases If one DC source fails then the switch will give that indication
13/abb, 12:47 – abb: Ok thanks
13/abb, 14:52 -abb: you should connect to switch and read the logs . there maybe any alarm for acknowledge for example a link were down, a link was disconnected or etc.
13/abb, 15:36 – abb: Ok
thank you so much for your help
13/abb, 15:38 -abb: 🙏🏻
14/abb, 10:34 -abb: Hello everyone, Need some help with testing of SR 489 Multilin Phase Differential Characteristic curve using Omicron Diff Operating Characteristic. Has anyone ever verified its operating characteristic?
14/abb, 13:31 -abb:
14/abb, 13:38 – abb: In the one of substaion we have license error in wincc frequently(siemens automation)What I should do for getting rid of this alarm
14/abb, 13:45 – abb: PAS??
14/abb, 13:46 – abb: This message was deleted
14/abb, 13:47 – abb: This message was deleted
14/abb, 13:49 – abb: Yes
14/abb, 13:50 – abb: It’s hardware key. U contact Siemens helpline
14/abb, 13:52 – abb: No It,s software licensas cc no pas
We have dongle for sicam pas
And our server dont have any problem
14/abb, 13:57 – abb: K
19/abb, 18:04 – abb: Hello, my name is Bruno, I’m electrical engineer graduated at UNIFEI – Brasil, I’ve been working with protection and automation since 2018, a short experience but I thing I could contribute with some topics here. I’m here to learn with you my colleagues and discuss anything about electrical engenieering. I have some experience with substations, IEDs and mostly ABB relays.
19/abb, 18:14 – abb: Welcome
19/abb, 18:32 -abb: You’re welcome
19/abb, 18:34 – abb”: You’re welcome bro
19/abb, 18:34 – abb: Thanks!
19/abb, 23:53 – abb: Hello, what is your license error exactly?
20/abb, 00:35 – abb: You can check the log in diagnosis folder/ license.log
20/abb, 00:36 – abb “: Nice to have you in this group
20/abb, 11:00 – abb: Error about pas cc configuration
20/abb, 11:00 – abb: I think I have missed this license
20/abb, 11:01 – abb: It is showing In license.log what is exactly missed
20/abb, 11:02 – abb: Ok I will check it
20/abb, 11:05 – abb:
20/abb, 11:05 – abb:
20/abb, 11:06 – abb: This license is trial and limited
20/abb, 11:07 – abb: If you press the details it showing what is exactly missed
20/abb, 11:08 – abb: Ok . How I can repair it
20/abb, 11:08 – abb: ?
20/abb, 11:09 – abb:
20/abb, 11:09 – abb: Check this link it might help
20/abb, 11:14 – abb: Thank a lot
20/abb, 11:14 – abb: But one question, what about the winCC License?
20/abb, 11:14 – abb: Chakeram
20/abb, 11:20 – abb: I’m dealing with SCC 9, for using that version we have to install winCC at first step, license it, then install SCC and license it
20/abb, 11:39 – abb:
20/abb, 11:40 – abb: Mokhlesam
20/abb, 11:43 – abb: Click details
20/abb, 11:47 -abb: PASCC-configuration licence is missing or expired
20/abb, 11:47 -abb: but how fix it?
20/abb, 11:48 – abb: The trial version is expired
20/abb, 11:50 – abb: This is for deleting the trial version
20/abb, 13:10 -abb: Hi all,
24/abb, 16:11 -abb: Can anybody help me regarding this
24/abb, 16:12 -abb: Hi anybody have configuration manual or videos for simocode relays
24/abb, 16:12 -abb: I need to know just how to communicate with the relay and uploading and downloading procedure
24/abb, 16:15 -abb: Do you have software
24/abb, 16:16 -abb: S
24/abb, 16:16 -abb: Installed??
24/abb, 16:17 -abb: And also you cable
24/abb, 16:17 -abb: I searched in the software
24/abb, 16:17 -abb: Yes I tried to communicate
24/abb, 16:17 -abb: TIA15
24/abb, 16:17 -abb: And I get the settings but I have some doubts
24/abb, 16:17 -abb: From Siemens
24/abb, 16:17 -abb: So only I am asking
24/abb, 16:18 -abb: Yes….
24/abb, 16:18 -abb: ????
24/abb, 16:19 -abb: Regarding communication and upload and download I need to know actual way
24/abb, 16:20 -abb: Because I have experience in digsi and reydisp softwares with that I do that blindly but I couldn’t get the correct methods
24/abb, 16:21 -abb: Ok I will catch you at the airport eve
24/abb, 16:22 -abb: OK sure
24/abb, 16:28 -abb: Do you have licensed software???
24/abb, 16:31 -abb: S I have…
24/abb, 17:49 -abb”: This message was deleted
25/abb, 16:33 – abb: I Install pcm 600 software , after the installation I update the connectivity package by using update manager. It shows error like that ” server couldn’t connect”. How to resolve it.pls any one tell me
25/abb, 16:58 – abb: Check your connection, if you are using an private network such as your company this may occur
25/abb, 17:22 – abb: but I use my own internet and I turn off my firewall also but it again show it same error.
25/abb, 17:33 -abb“: PCM needs SQLSERVER, this software comes with pcm package and during installation you will see that at first SQLSERVER is installing. Maybe it doesn’t install correctly depending your windows configuration
25/abb, 18:16 – abb: Its true but I dont think is this problem, its most likely of beeing something with internet connection, try using vpn
25/abb, 18:19 – abb: Uninstalled SQL server then reinstall issue will be resolved
25/abb, 18:26 -abb: Try this solution
27/abb, 00:38 – abb: In the one substations sometimes we have false alarm. Can anybody help me for finding the reason?
27/abb, 00:39 – abb:
27/abb, 01:18 – abb: Check ied events and the MMS 61850 maping
27/abb, 01:19 – abb: Probably another event is triggering the wrong MMS mapping
27/abb, 01:20 – abb: the ied didnot save anything in the events. How I can check 61850 MMS mapping?
27/abb, 01:20 – abb: Can you cause this event again?
27/abb, 01:21 – abb: You can use an package monitoring software
27/abb, 01:21 – abb: I should trigger this signal manualy
27/abb, 01:21 – abb: Ok
27/abb, 01:23 – abb: I’m not good at suppervisory but i’m preatty sure you can track down on this one the logical device/logical node…etc until discover witch event is causing this false alarm
27/abb, 01:24 -abb: Please try to load the cid once again in the IED
27/abb, 01:24 – abb: Ok I will do it. Tnx
27/abb, 01:24 – abb: Thank you
27/abb, 01:31 -abb“: It seems they are some kind of GI? Don’t you think?
27/abb, 13:30 – abb:
27/abb, 13:30 – abb: Anyone know how to resolve
27/abb, 13:41 -abb”: Restart relay.
27/abb, 13:42 – abb: Already restarted
27/abb, 13:42 – abb: Try to read with pcm 2.6 And pcm 2.9
27/abb, 13:43 -abb”: Try with different laptop.
27/abb, 13:44 – abb: Already tried with another laptop
27/abb, 13:46 – abb: Kindly install latest Hotfix file in your laptop.
27/abb, 13:49 – abb: Which hotflix
27/abb, 13:51 – abb:
28/abb, 13:48 – abb:
29/abb, 01:50 – abb: Thanks for sharing
29/abb, 14:48 – abb:
29/abb, 22:53 -abb: Hi friends,
I have a doubt, if we install fuse and MCB in same rating, then if overload comes what operate first either fuse blown first or mcb operate first, if it is so why? Reason. The same for short circuit condition
29/abb, 23:01 – abb: Fuse
29/abb, 23:01 – abb: Response time is faster than McBride
29/abb, 23:01 – abb: Mcb
29/abb, 23:08 – abb: How?? sir
29/abb, 23:21 -abb: Could you please share me the response time for mcb and fuse.
29/abb, 23:21 -abb: Exactly
29/abb, 23:41 – abb “: The answer depends on the thermal capability curve of each
29/abb, 23:42 -abb: How we can clarify? Any documents for this
29/abb, 23:43 – abb: I have data sheets. Will provide tomorrow
29/abb, 23:43 – abb “: This message was deleted
29/abb, 23:43 -abb: K sir thank you very much.
02/abb, 10:27 -abb: Sir kindly share me the same
02/abb, 16:27 -abb: When Three generators are running in parallel, suddenly one generators got trip. What happen to other generators?
02/abb, 16:28 -abb: I know that the speed of other generators will increase but I don’t know y? Anyone of you explain me
02/abb, 16:30 – abb “: According to drop curve In other word they all agreed to provide the grid with 50/60 Hz sinusuidal voltage waveform
02/abb, 16:36 – abb “: You can only see the actual increase in speed when you disconnect the generator from the grid
02/abb, 17:05 – abb: Exactly
02/abb, 17:14 – abb: This question is quite complex, the generators are running in grid or isolated from the Power system? If are conected you need to know how big are the influence of these generators in the system. In other words you will need a load flow simulation and a transitory simulation engine to know what will happen with the other machines, because syncronous generators have an angular stability that deppends on the intrinsic construtive characteristics. If the system are isolated ia most likely that the tripped machine will acelerate and the other machines will decresce speed, if the variant of power is inside capability and angle stability the speed regulator and the voltage regulator will set a new operation point to garantee the operation delivering the same amount of power (sorry for bad english, just woke up)
02/abb, 17:17 – abb: Actualy this is on a machine conected to a “infinite power” bus. If we are talking about a big loss of generation the machines will swing around the main frequency raising/decreasing speed, right?
02/abb, 17:18 -abb: If frequency of other two generators was raised means the speed has to increase right?
02/abb, 17:19 -abb: Because for speed=120f/p
02/abb, 17:19 – abb: In sincronous machines speed -> frequency
02/abb, 17:19 – abb: Yeah
02/abb, 17:21 – abb: But again, its most likely that the speed of the two remaining generators will decrease.
02/abb, 17:27 – abb: Once you have the same amount of load and have decrease your generation the eletrical current on the remaining generators are higher, this will result on a bigger magnetic flux that will make a force in the opposite direction of the primary machine (turbine), in other words this should break the generator
02/abb, 17:29 – abb: But as our colleague said, in a big power system you shouldnt have speed variations. It will all depend on your system. Is impossible to give a precise anawer without the information
02/abb, 17:35 -abb: Thank you very much I get different view about this
02/abb, 17:49 – abb “: The speed will decrease most likely depends upon the governer response if they running in isolated system
02/abb, 20:39 -abb “: A change in active power demand or in production causes a fluctuation of the speed (frequency).
If a generator trips, the frequency will decline. If the loss of generation is greater than the spinning reserve, the frequency could eventually stabilize at a new value lower than desired one. However, in practice, underfrequency relaying is used to reestablish the balance between power demand and the available production. If the frequency decline is excessive, generating units can be automatically tripped off causing an additional decline of frequency, and possible collapse of the system.
02/abb, 20:43 -abb “: Acceleration torque (Ta) = T (mech) – T (elec)
02/abb, 20:50 -abb “: For small variations 😛 (mech) ≈ T (mech) P (elec) ≈ T (elec)
03/abb, 07:25 -abb: 👍 thank you
11/abb, 10:39 – abb: Jii how to download micom alstom relay software. If you have any software link send it me jii
11/abb, 10:41 – abb: Google MiCOM S1 Agile
12/abb, 19:36 – abb:
13/abb, 10:05 -abb changed their phone number to a new number. Tap to message or add the new number.
13/abb, 21:42 – abb: Please addme new Mobile
13/abb, 21:46 – abb: 1JEAN.vcf (file attached)
14/abb, 03:41 – abb: Thnks
15/abb, 20:04 -abb: Anyone working with ABB Mach systems
16/abb, 19:00 -abb: Hi everyone
Anyone has Torkel win 3.0 (or any) software available?
please share, or send me the link. or bropBox me
25/abb, 10:09 -abb: anyone has IEC 61850-8-1 Ed 2 pdf ?
26/abb, 16:07 -abb“:
26/abb, 17:51 – abb: Awesome! Thanks a lot
26/abb, 18:39 -abb“: 👍
30/abb, 20:55 -abb: Hi
30/abb, 20:56 -abb: I need to download digisi 4.91 or 4.93 with Windows 10 Pro 64 bit
30/abb, 20:56 -abb: Any one can help me to give me site, I can download directly
30/abb, 21:20 – abb:
17/abb, 14:30 -abb: I will check, thanks
17/abb, 14:31 -abb“: Good luck
18/abb, 00:32 -abb: Good evening
18/abb, 00:33 -abb: I need this book protection of electricity distribution network 3rd edition.
18/abb, 08:23 -abb:
18/abb, 08:28 -abb: Thank you so much
19/abb, 11:58 – abb:
19/abb, 11:59 – abb: This alarm what means? How I can get relay config??
20/abb, 01:25 -abb: How to use directional earth fault protection?
20/abb, 01:25 -abb: How to use directional earth fault protection to distinguish between a fault current and a capacitive current.
I hope you will find this article interesting to read.
20/abb, 05:43 -abb: Hello friends, I would like to know if anyone among you could assign a user curve to any function of the P142 MICOM relay
20/abb, 05:45 -abb: I prepared a curve, unfortunately I don’t know how to import it.
22/abb, 23:52 -abb:
22/abb, 23:52 -abb: I need this book Plz
23/abb, 16:59 abb: You can order it on at very low price.
23/abb, 22:59 -abb:
24/abb, 00:43 -abb: Just try for 3rd of May and see the change
24/abb, 00:43 -abb:
24/abb, 00:43 -abb: Guys…Do register it asap..
It’s the workshop going on…
Happy exercising..
24/abb, 19:13 – abb: This message was deleted
26/abb, 17:52 – abb: this relay does not turn on why ?
26/abb, 18:30
26/abb, 18:32 – abb: Pls ensure the polarity of auxilary suppy
26/abb, 18:42 – abb: Ok C1 is + and C2 is –
26/abb, 18:43 -abb:
26/abb, 19:38 -abb“: Are you sure about the exact output of your dc source?
26/abb, 20:35 – abb “: Insulation failure at the termination… may be due to too much dust or deterioration of the Elbow connector
26/abb, 20:39 -abb: Ok
26/abb, 20:39 -abb: Ok thanks
26/abb, 20:39 -abb: Ok thanks
26/abb, 22:23 -abb”:
26/abb, 22:23 -abb”: Free ebook by Springer.
26/abb, 22:35 abb:
26/abb, 22:40 abb: Hi my friends
Do you know how to reset password of this devise?
27/abb, 00:59 – abb: Yes, i have confirmed a polarity, some problem, relay not turn ON!! 🤔
27/abb, 01:00 -abb: Is it a new relay?
27/abb, 01:00 – abb: Yes i used a cmc 256, auxiliary source.
27/abb, 01:00 -abb: When u turn On supply measure the applied voltages on the terminals of the relay using a multimeter.
27/abb, 01:01 -abb: That happen when u use a test set. When u apply the voltage on the relay, the voltages drop. I face the same issue on Sr 489 relay using a CMC 356
27/abb, 01:02 -abb: Check the applied voltage using a multimeter.
27/abb, 10:10 -abb: Join Prtection Relay 4 ” Zaigham ali: Plzz add 00968 99240411
29/abb, 10:06 – abb: Free books
29/abb, 10:06 – abb:
29/abb, 10:54 – abb: 👍
29/abb, 18:09 -abb”:
29/abb, 18:10 -abb”: This message was deleted
29/abb, 18:11 -abb”: With changing configuration and sending it to the relay, this error appeared, what the reason is?
29/abb, 18:11 – abb: Relay is in pickup condition
29/abb, 18:12 -abb”: which function ?
29/abb, 18:12 -abb”: How can i find?
29/abb, 18:12 -abb”: 7SA522
29/abb, 18:14 – abb: Check
29/abb, 18:19 – abb: Check General Introgation
29/abb, 21:45 -abb“: Can you please share P142 thermal over load calculation sheet.
29/abb, 21:59 – abbs: That’s correct
29/abb, 21:59 – abbs: Exit the pickup condition
30/abb, 20:57 – abb: Is anybody having the wiring diagram no: 811W00138? It is high speed master trip relay.
30/abb, 20:58 – abb: Easun Reyrolle
02/abb 23:29 -abb “:
03/abb 00:47 -abb:
03/abb 00:47 -abb: SCADA System
03/abb 15:50 – abb“:
04/abb 00:47 – abb: Friends. Can anyone have the below document. Pls share if so.

To join our protection relay WhatsApp group, please send interest on WhatsApp +989129613659

sample discussion

– while I connect sip 5 bcu like that error I got can I solve that
– Differential initial setting is 0.2*In?
– What is the meaning of it?

– Anybody has breaker dcrm result & procedure for testing breaker dcrm with megger TM1740 kit.
– I think the problem is your RAM
– maybe you can upgrade it to 8GB or 16GB.

– What is this problem?
– Install the device driver for 7sj80
– My breaker got tripped on differential Relay is not showing any current
-87BD In phase R,Y,B But no current
– W1 or W2
– Its tap changing problem
– It is due to an imbalance of voltage
– Tap was not changed. In relay 5th harmonic and 2nd harmonic is blocked.
– Not showing any winding
– I just updated the firmware of my 7SA82 relay from 7.82 to 8.06, now the relay shows firmware 8.06 but CFG 7.82, when I go to the device information page of offline extracted settings, here upgrade option is missing at configuration version, please guide how can I get upgrade option

here you can see, upgrade option is not there near CFG

this is what the manual shows, but in my case, this upgrade option is not there as you can see in the above picture.
– Did u import the communication firmware for this device?
– issue resolved, by following this “You can go to “Upgrade project device” in the project tree, and you will find for upgrade CFG”

To join our protection relay WhatsApp group, please send interest on WhatsApp: +989129613659

– Getting this error when installing digsi 4.94, plz help
– When I am taking megger for pt primary to secondary, then when taking b/w primary and 1a and primary getting 400 Mega ohms, and primary to 1n getting 1.9 Giga. Ohm, why is the difference?
– What is the applied test voltage?
– 5kV
– Remove secondary connections either connected 1a or 1n. Apply test voltage case1: primary to 1a
Case 2: primary to 1n. The values more or less should come the same. Sometimes it will show some difference due to testing machine (Megger) measurement and also ambient temperature(T)
– IN 7SR relay where to find Characteristic angle?
– Using reydisp evolution
– take pri. to earth at 5kv and seco. to earth at 500 v
– Anybody tested the GIPAM 10NZ relay? Where is direction selection for 67G SGR Protection In software?
– Check-in current protection folder
– +-45 by default

Click on the picture for our DIGSI 4 Training

– any ziv zlv distance protection engineer urgent need, Unbalance settings are given 30%
– How to test and justify this 30%
– How to Test 100% Stator Earth fault protection?
– With 3rd Harmonic. It is the power setting. When u give the fault with power above 30%. Then only the relay will be active.
– Which relay Model?
– 7UM622
– Control cable length is 700mtr, then how to calculate voltage drop.

– if 220 kv or any kv panel which receiving end panel thus their relationship angle between v-i is 180 degrees apart.? is this right?

WhatsApp number to join our discussion groups: +989129613659

– Vph to Vph selected. The setting is 121 V
– Then for secondary injection how to inject?
– How to test under excitation protection in Siemens relay 7UM?
– U have to first take the capability curve of the generator and then on under excitation side make 3 part one at 0deg angle, 90deg angle, and 120 deg angle
– For each angle, u will get a certain MW and Mvar which u can inject through ur secondary injection kit in terms of voltage and current?

PSCAD training information:

– Can anyone provide the DNP3 protocol standard?
– On the upper side of Relay Ready LED is Blinking. That’s why it’s not communicating by software, How to fix it
– which led?
-Ready LED
– relay faulty indiction is going on annunciation.
– No annunciation is coming on other. but I think the relay gets faulty.

– Is relay restarting again and again? Because it blinks when in test mode
– Is it in test mode?
– Is it rebooting
– u can also check the error code in the relay
– Not rebooting
– HMI working properly
– When you read the data from relay through software what error it is showing
22abb , 10:38 – abb pcm 600: oh ABB show on the display
22abb , 10:38 – abb pcm 600: this is error inside
22abb , 10:38 – abb pcm600: Not communicating with software
22abb , 10:39 – abb pcm 600: must repair
22abb , 10:40 – abb pcm 600″: What is the fault code relay is showing
22abb , 10:41 – abb pcm 600″: Like 2,7,8,10,43,44 etc
22abb , 10:41 – abb pcm600: Not showing any fault
22abb , 10:41 – abb pcm 600″: Or warning code
22abb , 10:41 – abb pcm600: Only ready LED is Blinking
22abb , 10:41 – abb pcm600: Nathing
22abb , 10:42 – abb pcm 600″: Share this screen
22abb , 13:30 – abb pcm600:

22abb , 13:31 – abb pcm600: Please check
22abb , 13:32 – abb pcm 600″: Laptop screen
22abb , 13:34 – abb pcm600:
22abb , 13:35 – abb pcm600: Now communicated with relay
22abb , 13:35 – abb pcm600: But Blinking problem is not fixed
22abb , 13:37 – abb pcm 600″: Go to main menu/monitoring/IED status/ self supervison
22abb , 13:38 – abb pcm 600″: Check for faulty hardware module
22abb , 13:40 – abb pcm 600″: If it is a diagnostic failure then also it flashes
22abb , 13:40 – abb pcm 600″: Check IRF alarm contact status to find the reason
22abb , 13:42 – abb pcm 600″: It is a internal fault
22abb , 14:05 – abb pcm600: May be
22abb , 15:13 – abb pcm600:
22abb , 15:13 – abb pcm600:
22abb , 15:14 – abb pcm600: Why current in R phase so much high on normal voltage
22abb , 15:16 – abb pcm 600″: Load on r phase might be more as compared to other phases
22abb , 15:18 – abb pcm600: Normal voltage is injected
22abb , 15:19 – abb pcm 600: whats the ct ratio
22abb , 15:19 – abb pcm600: And normal current is injected
22abb , 15:19 – abb pcm600: 400/1
22abb , 15:19 – abb pcm 600: check backup relay
22abb , 15:19 – abb pcm 600: measurmnt
22abb , 15:20 – abb pcm 600: how mny core
22abb , 15:20 – abb pcm 600: in ct
22abb , 15:20 – abb pcm 600: 400-800-1200
22abb , 15:27 – abb pcm600: But i am injecting to relay directly
22abb , 15:27 – abb pcm 600: how
22abb , 15:27 – abb pcm 600: secondry set
22abb , 15:30 – abb pcm 600″: Check ct wiring
22abb , 15:30 – abb pcm 600″: Star point of relay
22abb , 15:31 – abb pcm 600″: Input
22abb , 15:31 – abb pcm 600″: Is correctly wired
22abb , 15:31 – abb pcm 600: star point is only for protction
22abb , 15:42 – abb pcm600: Star point is ok
22abb , 15:43 – abb pcm 600: r u injected or line is charge
22abb , 15:44 – abb pcm600: Relay is separated from PT CT,
22abb , 15:45 – abb pcm600: I am injecting current from omicron
22abb , 15:45 – abb pcm600: PT as well
22abb , 15:45 – abb pcm 600: ok
22abb , 15:46 – abb pcm 600: r u injecting balance current
22abb , 15:46 – abb pcm 600: 1 A
22abb , 15:46 – abb pcm600: Yes
22abb , 15:46 – abb pcm 600: check ct ratio
22abb , 15:46 – abb pcm 600: in the relay
22abb , 15:47 – abb pcm600: CT ratio is OK in relay
22abb , 15:47 – abb pcm 600: when u injecting
22abb , 15:47 – abb pcm 600: is there any currnt in IN
22abb , 15:47 – abb pcm600: Yes same as R phase
22abb , 15:48 – abb pcm 600: ok
22abb , 15:48 – abb pcm600: Check in this, it was fluctuating
22abb , 15:49 – abb pcm 600: inject only r phase
22abb , 15:49 – abb pcm 600: backside of relay terminal
22abb , 15:49 – abb pcm 600: not on tb
22abb , 15:51 – abb pcm600: That I am doing
22abb , 15:51 – abb pcm 600: ok
22abb , 15:53 – abb pcm600: It’s 934 A is showing when I inject only in R phase
22abb , 15:53 – abb pcm 600: Send me the pic of ct ratio
22abb , 15:53 – abb pcm 600: in the relay
22abb , 15:55 – abb pcm600: I will send relay file
22abb , 15:55 – abb pcm 600: ready led is blinking for this relay
22abb , 15:56 – abb pcm600: Yes
22abb , 15:56 – abb pcm 600: which modl
22abb , 15:56 – abb pcm 600: REL670
22abb , 15:56 – abb pcm600: Yes
22abb , 15:56 – abb pcm 600: ok
22abb , 15:56 – abb pcm 600: send me file
22abb , 15:59 – abb pcm 600:

22abb , 15:59 – abb pcm 600: send me this pic
22abb , 15:59 – abb pcm 600: in the rely
22abb , 16:00 – abb pcm600:
22abb , 16:00 – abb pcm 600: pic snd krdo
22abb , 16:01 – abb pcm 600: instll krna pdega
22abb , 16:01 – abb pcm 600: pcm
22abb , 16:01 – abb pcm600: Ok
22abb , 17:18 – abb pcm600:
22abb , 17:19 – abb pcm600: I have imported this file, but why Protection is opening
22abb , 17:20 – abb pcm600: Protection is not opening
23abb , 10:59 – abb pcm 600″: Is circuit breaker contact resistance temperature dependent
23abb , 11:19 – abb pcm600: Yes the hotter it has higher value.
23abb , 11:21 – abb pcm600″: Yes
23abb , 14:51 – abb pcm 600 “: Yes.. That’s why you would have seen that the current is injected for a very short duration.. As not to elevate the temperature
23abb , 19:34 – abb pcm 600″: Does variations in input voltage affects breaker timing
23abb , 19:35 – abb pcm 600″: Input supply varies from 110V to 170V
23abb , 19:35 – abb pcm 600″: Ideal voltage is 110 V
23abb , 19:35 – abb pcm 600″: This message was deleted
23abb , 19:56 – abb pcm 600″: Please can anybody tell me this
23abb , 20:38 – abb pcm 600 “: Are you testing time or contact resistance
23abb , 20:39 – abb pcm 600″: Both
23abb , 20:39 – abb pcm 600″: 132 kV breaker close time =77 ms
23abb , 20:39 – abb pcm 600″: At160V
23abb , 20:40 – abb pcm 600: PT ki 110 v vary kr rhi h
23abb , 20:40 – abb pcm 600″: No pt
23abb , 20:41 – abb pcm 600″: Direct supply from AC source for testing
23abb , 20:41 – abb pcm 600: ac supply for kit
23abb , 20:42 – abb pcm 600″: No for breaker control supply
23abb , 20:42 – abb pcm 600: ok
23abb , 20:42 – abb pcm 600 “: Usually, the higher volts may not affect the timing but will damage the insulation of the coil
23abb , 20:42 – abb pcm 600″: Is this value is acceptable
23abb , 20:43 – abb pcm 600: ac supply use in brekr only for motor
23abb , 20:43 – abb pcm 600 “: Refer to the manual..
23abb , 20:43 – abb pcm 600″: Input ac supply for kit is 260V
23abb , 20:43 – abb pcm 600 “: For MV, I have less than 60ms for one while 40 ms for the other type
23abb , 20:43 – abb pcm 600″: Source is giving 260 V
23abb , 20:43 – abb pcm 600 “: So you have to compare with the values in manual
23abb , 20:44 – abb pcm 600″: Trip time is 46 ms,CO=39ms
23abb , 20:44 – abb pcm 600: accpt
23abb , 21:20 – abb pcm 600:
23abb , 21:20 – abb pcm 600: please check these angle diff. is correct or wrong
24abb , 11:01 – abb pcm 600:
24abb , 11:02 – abb pcm 600: Can you tell me what is the name of this marked portion?
24abb , 11:02 – abb pcm 600: And why it is connected there?
24abb , 13:02 – abb pcm 600: anyone have ETAP software
24abb , 13:04 – abb pcm600: Correct
24abb , 18:06 -abb pcm600: Its correct, inductive.
24abb , 18:09 -abb pcm600: Es un separador de fases
24abb , 18:13 -abb pcm600: Can anyone tell me this?
When i charge the 132kv line, then i get the all secondary 3phase voltage at the panel TB from line cvt.
But i trip the breaker, now the line remains back charge bcz of opposite end connected. In this case i get only R, B phase voltage from same line cvt. Y ph voltage is near to zero(i.e, y=7 v) How it is possible?
24abb , 18:15 – abb pcm 600: line pt install
24abb , 18:15 -abb pcm600: Mm installed
24abb , 18:16 – abb pcm 600: Mm means
24abb , 18:16 -abb pcm600: Sorry
24abb , 18:16 -abb pcm600: Yes installed
24abb , 18:16 – abb pcm600: May Y phase jumper opened in transmission line
24abb , 18:17 – abb pcm 600: please check from remote end
24abb , 18:17 – abb pcm 600: voltage
24abb , 18:28 -abb pcm600: No sir
24abb , 18:28 -abb pcm600: It also perfectly correct
24abb , 18:30 – abb pcm 600: remote end the all three voltage is perfect ?
24abb , 18:30 -abb pcm600: Yes of course
24abb , 18:31 – abb pcm 600: tell me the all three voltage
24abb , 18:32 -abb pcm600: R=63.8
24abb , 18:32 – abb pcm 600: all is ok
24abb , 18:33 -abb pcm600: Now it is charged at both ends.
24abb , 18:33 -abb pcm600: When i cut our end breaker, then i get only 2 ph voltage
24abb , 18:34 – abb pcm 600: r u seeing in the panel
24abb , 18:35 -abb pcm600: No seeing at pt MB
24abb , 18:35 – abb pcm 600: cut the brekr from remote end chrge from our end
24abb , 18:35 – abb pcm 600: then check
24abb , 18:36 -abb pcm600: Checked
24abb , 18:36 – abb pcm 600: same prblm
24abb , 18:36 -abb pcm600: I get all 3 ph voltage
24abb , 18:36 -abb pcm600: No
24abb , 18:36 – abb pcm 600: ok
24abb , 18:36 -abb pcm600: It is clear
24abb , 18:37 – abb pcm 600: cvt aftr breker or before
24abb , 18:37 -abb pcm600: After
24abb , 18:38 – abb pcm 600: when charge from both end then what about the load
24abb , 18:38 – abb pcm 600: all three load are balance
24abb , 18:38 -abb pcm600: Yes of course
24abb , 18:56 – abb pcm600: Does the problem solved now?
24abb , 19:49 – abb pcm 600″: Check wiring of pt at tb
24abb , 19:49 – abb pcm 600″: Is it loose
24abb , 20:31 -abb pcm600: No
24abb , 20:31 -abb pcm600: Not anymore
24abb , 20:32 -abb pcm600: No
24abb , 20:32 -abb pcm600: It is perfectly connected
24abb , 20:32 – abb pcm600: Wat about pt secondary phase to phase voltage
24abb , 20:32 -abb pcm600: 110 if it is charged at both end
24abb , 20:33 – abb pcm600: Wat about all other phase?
24abb , 20:34 -abb pcm600: All three phase to phase voltage is 110 if the line charged at both ends
24abb , 20:34 -abb pcm600: If i cut my end breaker then i get 2 phase voltage only
24abb , 20:35 -abb pcm600: I am not getting Yph voltage
24abb , 20:35 – abb pcm600: Does the LA in line side shows leakage current?
24abb , 20:36 -abb pcm600: If our side is charged and the other side breaker is off in this case i get all three phase voltage
24abb , 20:37 – abb pcm600: This message was deleted
24abb , 21:46 – abb pcm 600″: Yes check for leakge current in LA
24abb , 21:51 -abb pcm600: Ok
25abb , 13:11 – abb pcm 600″:

25abb , 13:11 – abb pcm 600″: Does DNP communicate over RS 485
25abb , 13:26 -abb pcm600: Yes, if supported by the relay manufacturer
25abb , 17:08 -abb pcm600: Can any one tell me sir
Motor got tripped on 51n but the all three phase currents are equal,the protection on calculated value of three phase currents internally by the relay .the relay was 7sj66
25abb , 17:08 -abb pcm600: What is causes
IR valu of the motor is good
25abb , 17:11 – abb pcm600: Any one can explain the difference between DNP and Rs 485
25abb , 17:11 – abb pcm 600″: RS 485 is port
25abb , 17:11 – abb pcm 600″: DNP is protocol
25abb , 17:12 – abb pcm 600″: Used in process automation system
25abb , 17:12 – abb pcm600 “: Any one can be explain how to collect ABT meter load survey data through RS 485 port
25abb , 19:30 -abb pcm600: Correct, RS485 RS232 RS422etc is just an standard for serial communication
25abb , 19:30 -abb pcm600: DNP is a protocol which can be communicated over RS232 or RS485 serial port (as rightly answered by Abhishek).

But, I am not sure if DNP3 over RS485 relays can be Daisy Chained which is typical feature of RS485 network. Can someone tell this??
25abb , 19:32 -abb pcm600: DNP can definitely be daisy chained, just use a terminating resistor
25abb , 19:33 -abb pcm600: Ok thanks, so DNP3 outstation address will act like node ID??
How many relays can we drop on a RS485 using DNP3?
25abb , 19:34 -abb pcm600: I mean DNP3 slave address ranges upto 65535
25abb , 19:36 -abb pcm600: The maximum ieds that was successfully daisy chained was 255, however I won’t use anything close to that.
25abb , 19:36 -abb pcm600: Baud??
Network Length??
25abb , 19:39 -abb pcm600: Read through the RS485 standard, all is specified, this is not my area is expertise, but I’ve seen them work over 200m, use a 9600bd 2 wire comms
25abb , 19:47 -abb pcm600: Ok. Thanks
25abb , 20:22 – abb pcm600: With 2 pair, 0.5 twisted shielded pair, proper earthing of spare wires and shield, I used till1400 meter closed loop
26abb , 10:35 – abb pcm 600: any one use kocos artes 440 three phase secondary innection set.
27abb , 17:59 – abb pcm 600″:

Can anybody explain me this
28abb , 10:56 – abb pcm600: Please share detailed explanation of underexcitation Protection
28abb , 17:54 – abb pcm 600″: Please tell me about LBB scheme in 220kV
28abb , 18:18 – abb pcm600: Local Breaker protection scheme basically depends on type of busbar scheme you applied for.
28abb , 18:19 – abb pcm600: What is the type of bus bar scheme used in your 220kV station
28abb , 18:20 – abb pcm600: It is a trip matrix for designing of protection schemes
28abb , 18:21 – abb pcm600: For which type of unit? Is it for generator
28abb , 18:29 – abb pcm600: Class A is for Turbine trip
Class B is for GCB trip
28abb , 18:33 – abb pcm600: Whenever Turbine tripping occurs ..GCB trips consequently..
28abb , 18:40 – abb pcm600: No correlation with generator in this case. It is for transformer.
28abb , 18:43 – abb pcm600: Above transformer is a GT ..
28abb , 18:46 – abb pcm600: Though it is a GT, ptotection group A and Group B is for transformer breaker it self Hv side and LV side(GCB), 86.1 & 86.2
28abb , 18:51 – abb pcm600: GCB doesn’t have HV side CB..
86 means Master tripping …
28abb , 18:53 – abb pcm600: 🤦🏻‍♂️🤦🏻‍♂️
28abb , 18:53 – abb pcm600: Im saying for trafo
28abb , 18:54 – abb pcm600: *GT not GCB
28abb , 18:55 – abb pcm600: Here in trip matrix, Group A & B categorised for master trips only.
28abb , 18:57 – abb pcm600: You mean, GT dont have hv side cb
28abb , 18:58 – abb pcm600: Can you please share such, sld which shows GT side doesnt have hv side cb
28abb , 20:06 – abb pcm600:
Sorry LV side doesn’t have CB I meant to say..if it is 11/33kV GT ..CB will be at 33kV side in small power plants..
28abb , 22:16 – abb pcm600: 👍🏼👍🏼. I got it
29abb , 13:21 – abb pcm 600″: It is transformer
29abb , 14:23 – abb pcm600: For transformer, I have no idea regarding under excitation. We generally use over excitation/flux protection for higher rating transformers.
29abb , 15:09 – abb pcm600: Yes sir, generator only
29abb , 15:40 – abb pcm 600″: No it is transformer
29abb , 15:41 – abb pcm600: Sir actually I asked this yesterday,
29abb , 15:42 – abb pcm600: I want wrt generator
29abb , 15:42 – abb pcm600: For 7UM relay
29abb , 17:43 – abb pcm 600″: Low impedance bubar having main and check zone
29abb , 17:43 – abb pcm 600″: *busbar
29abb , 17:46 – abb pcm 600″: For busbar trip
29abb , 17:49 – abb pcm 600″:
Please tell me how this is working
29abb , 18:46 – abb pcm600: I understood scheme is double busbar with transfer bus scheme.
Main and check zone concept is different from LBB. We use zone system in busbar differential. Whereas, LBB operates when corresponding breaker fails to trip under feeder fault/bay fault condition. LBB will extend to trip concerned busbar of that breaker(two main and transfer scheme) and other end of the line(i. e., opposite end station).
29abb , 18:49 – abb pcm600: You will be more clear with protection schemes, showing LBB operated page.
31abb , 21:07 -abb pcm600: Hii,

Can you please suggest electric safety shoe( composite toe shoe) available online
31abb , 21:09 – abb pcm 600 “: It’s what we are advised to use 👆🏻
01/09/2020, 11:51 – abb pcm 600″: float dc ammeter shows which current?
01/09/2020, 11:51 – abb pcm 600″: In battery charger
01/09/2020, 12:16 – abb pcm600: From DIGSI 5 can we communicate siprotec 4 relay
01/09/2020, 13:17 – abb pcm 600″: No
01/09/2020, 13:18 – abb pcm 600″: But you can install them on single pc
01/09/2020, 13:19 – abb pcm600: OK, thank you
02/09/2020, 11:51 – abb pcm 600:
02/09/2020, 11:51 – abb pcm 600: anyone have drawing for this 11 kv panel
02/09/2020, 11:58 – abb pcm 600: siemens
02/09/2020, 13:36 – abb pcm 600″: I am having tow mfm in different panels both having same voltage and current but KWH is different . Is this possible
02/09/2020, 13:40 – abb pcm600″: Check CTR in both
02/09/2020, 13:40 – abb pcm 600″: Checked it is correct
02/09/2020, 13:44 – abb pcm600: Current may be same now but it might be different in different timings, so results in different kwh ratings.
02/09/2020, 13:44 – abb pcm 600″: Please clarify
02/09/2020, 14:19 – abb pcm600: Load in two feeders could not need to be same all the times. Eventually, results in different kwh rating.
02/09/2020, 14:20 – abb pcm 600″: One is incomer and one is outgoer
02/09/2020, 14:21 – abb pcm600: Only one- one feeder connected in that bus
02/09/2020, 14:21 – abb pcm 600″: No
02/09/2020, 14:22 – abb pcm600: Then how both currents ratings were same
02/09/2020, 14:23 – abb pcm 600″: It is plant of 30mw where incomer is trf and connected to og line
02/09/2020, 14:24 – abb pcm 600″: That incomer is getting input from 6 5MW source s
02/09/2020, 14:43 – abb pcm600: How much is the difference in values in both meters
02/09/2020, 14:51 – abb pcm 600″: 183 and 258
02/09/2020, 14:53 – abb pcm600″: Is meter calibration done
02/09/2020, 14:53 – abb pcm600″: Check PT also
02/09/2020, 16:49 – abb pcm 600″: R-Y 115, Y-B 121 B-R 120
02/09/2020, 16:49 – abb pcm 600″: Current
02/09/2020, 16:49 – abb pcm 600″: No
02/09/2020, 16:49 – abb pcm 600″: Angles
02/09/2020, 19:43 – abb pcm600: In 7SR relay
02/09/2020, 19:50 – abb pcm600: TCS Protection is not there in 7SR17 Relay
02/09/2020, 19:51 – abb pcm600: How to make logic for TCS in 7SR17 Relay
02/09/2020, 19:58 – abb pcm600: This will work only in case of DC coil in VCB
02/09/2020, 20:02 – abb pcm600: OK, but how to make equation for that
02/09/2020, 20:03 – abb pcm600: My existing relay is Rho 5
02/09/2020, 20:05 – abb pcm600: Sorry its Rho3
02/09/2020, 20:20 – abb pcm600: Thank you
03/09/2020, 15:51 – abb pcm600:
03/09/2020, 15:51 – abb pcm600: In 7SR relay how to make equation
03/09/2020, 15:51 – abb pcm600: Like logic
03/09/2020, 16:00 – abb pcm600:
03/09/2020, 16:01 – abb pcm600: How to make TCS Logic in disp evolution software
03/09/2020, 16:01 – abb pcm600: Please help
03/09/2020, 16:04 – abb pcm 600″: How many trip coils in your breaker
03/09/2020, 16:06 – abb pcm600: Two
03/09/2020, 16:06 – abb pcm 600″: Ok
03/09/2020, 16:07 – abb pcm 600″: Use two equations
03/09/2020, 16:07 – abb pcm600: Yes but please guide
03/09/2020, 16:08 – abb pcm 600″: Assign binary input to 74TCS-1 to 4 in input matrix
03/09/2020, 16:09 – abb pcm 600″: Then assign the same in output matrix by virtual input
03/09/2020, 16:10 – abb pcm 600″: Use E1=V1V2, E2=V3V4
03/09/2020, 16:14 – abb pcm600: 74TCS is not available in relay
03/09/2020, 16:15 – abb pcm 600″: Which relay
03/09/2020, 16:15 – abb pcm600: 7SR17
03/09/2020, 16:51 – abb pcm600: Is it possible to Use TCS in if we don’t have 74TCS
03/09/2020, 16:51 – abb pcm600: ?
03/09/2020, 16:52 – abb pcm600:

Whatsapp +989129613659

03/09/2020, 17:38 -abb pcm600: SEL 311B Manual Operating Password please Share
03/09/2020, 17:49 -abb pcm600: Should be TAIL or OTTER
03/09/2020, 18:23 – abb pcm600: Level 1:OTTER
Level 2: TAIL
03/09/2020, 21:11 – abb pcm600: In CT ,Due to leakage the oil reaches minimum level.In that case how to refill the oil?
Whether we refill directly from top of the CT oresle vacuum pulling thereby bottom filling ?
03/09/2020, 21:32 – abb pcm 600: What can someone recommend as voltage regulator for a 33kv line that experiences voltage fluctuations once there is any loss of any other 33kv feeder all feeding from the same 132kv bus. Meanwhile the one that experiences the voltage dips is not on the 33kv bus.
03/09/2020, 21:38 – abb pcm 600: can we communicate the scheneider relay p442 in micom S1 studio software
03/09/2020, 21:47 – abb pcm 600″: This message was deleted
03/09/2020, 21:48 – abb pcm 600″: Can anyone tell me that when I am injecting 63.5in phase to neutral why I am getting voltages in ph to ph
03/09/2020, 21:56 -abb pcm600: You are injecting in one phase or two phase?
03/09/2020, 21:56 – abb pcm 600″: Only phase to neutral
03/09/2020, 21:56 – abb pcm 600″: Rph only
03/09/2020, 21:58 -abb pcm600: In Y phase also 31V showing
03/09/2020, 22:01 – abb pcm 600″: Not injecting in y phase
03/09/2020, 22:06 -abb pcm600: If injecting in r phase,it should not show in Y and b phase,but it will show in VRY AND VBR.
03/09/2020, 22:07 – abb pcm 600″: Is there neutral problem
03/09/2020, 22:07 -abb pcm600: Try to ground other two phases and check
03/09/2020, 22:08 -abb pcm600: Check with three phase injection also
03/09/2020, 22:08 – abb pcm 600″: Ok
03/09/2020, 22:29 – abb pcm 600: how it solve
03/09/2020, 22:30 – abb pcm 600: during installation of scheneider electric studio

Hello, thank you for visiting our site
By joining our WhatsApp and Telegram groups, talk to the world’s electrical engineers and solve your problems about electricity. You can also benefit from our free files and see our training packages at the link below.

03/09/2020, 22:46 – abb pcm 600: and netframe is not support on this window
04/09/2020, 11:28 – abb pcm 600: how can i download the data model package for scheneider
04/09/2020, 13:18 -abb pcm600: You have Schneider software?
04/09/2020, 13:18 -abb pcm600: You can download through data model manager
04/09/2020, 13:19 – abb pcm 600: server not respond
04/09/2020, 13:21 -abb pcm600: If you need any particular data model, I will check and I sent to you.
04/09/2020, 13:21 – abb pcm 600: ok
04/09/2020, 13:21 – abb pcm 600: P442 distance protection relay all software version
04/09/2020, 13:23 -abb pcm600: I will check in my system, if available I will send,email id?
04/09/2020, 13:40 – abb pcm 600: ok
04/09/2020, 13:40 – abb pcm 600:
04/09/2020, 14:06 – abb pcm 600″:
04/09/2020, 14:07 – abb pcm 600″: Plz check data model if have then plz
04/09/2020, 14:56 – abb pcm 600″: I am connecting two power supply in series of 48 V but current of one is 10A and 2 A what will be the resultant
04/09/2020, 14:56 – abb pcm 600″: Current
04/09/2020, 14:57 – abb pcm600: Download data models
04/09/2020, 16:12 – abb pcm600: Current will be added in series
04/09/2020, 17:12 -abb pcm600: Check your email. I sent P442 data models
04/09/2020, 17:23 – abb pcm 600: yes i recieved thank you so much
04/09/2020, 19:12 – abb pcm 600″: server not respond
04/09/2020, 22:01 – abb pcm600: Use Ge Micom S1 Agile
05/09/2020, 13:56 – abb pcm600: How to make Close circuit supervision configuration in 7SR Relay
05/09/2020, 17:12 – abb pcm 600″: earth resistance value without grid must be less than 5 ohm
05/09/2020, 17:12 – abb pcm 600″: Is it correct
05/09/2020, 17:17 -abb pcm600: It depends upon soil,for some soil should be less than 1 ohm
05/09/2020, 17:47 – abb pcm600: hmmm
05/09/2020, 18:36 – abb pcm600:
05/09/2020, 18:36 – abb pcm600: What’s the meaning the meaning of 4 temperature inputs
05/09/2020, 18:37 – abb pcm600″: May be for RTD connections
05/09/2020, 18:38 – abb pcm 600 “: Yeah.. For bearings, stator and rotor
05/09/2020, 19:00 – abb pcm600: What is the application of RTD
05/09/2020, 19:00 – abb pcm 600 “: Monitoring the temperature
05/09/2020, 19:00 – abb pcm600: Ok
05/09/2020, 19:00 – abb pcm 600 “: Resistance temperature detector
05/09/2020, 19:01 – abb pcm 600 “: The resistance changes with respect to the temperature
05/09/2020, 20:03 – abb pcm600: Do we need any configuration in 7SR relay for RTD
05/09/2020, 20:30 – abb pcm 600 “: I haven’t worked on 7sr but RTDs need configuration
05/09/2020, 20:32 – abb pcm600: Dears

08/09/2020, 09:54 – Fatima added A1 5414
08/09/2020, 12:11 – abb pcm 600″: How to test low impedance ref
08/09/2020, 12:11 – abb pcm 600″: Can anyone tell me
09/09/2020, 11:35 – abb pcm 600″: Can anyone please share testing procedure for line differential relay
09/09/2020, 11:35 – abb pcm 600″: Siemens 7sd522
09/09/2020, 11:36 – abb pcm 600″: It was there in this group but it was deleted in my phone number please share it again
09/09/2020, 11:47 – abb pcm 600″: Thank you
09/09/2020, 12:13 abb pcm600: Thanks
09/09/2020, 14:26 – abb pcm600: Any body have testing format for REM 615. Like overcurrent, earth fault, thermal overload, phase reversal, negative sequence overcurrent protection for motor, motor load jam protection and motor start up supervision .
09/09/2020, 14:26 – abb pcm600: Please share it
09/09/2020, 22:43 – abb pcm 600″: This message was deleted
09/09/2020, 22:43 – abb pcm 600″: Siemens 7SA522
09/09/2020, 22:44 – abb pcm 600″: Testing procedure of 7SA522 if anyone has please share it
Which relay to set directional
10/09/2020, 16:38 – abb pcm600:
Any 1 have Omicrom PTL file for ERL L-Pro 4000
10/09/2020, 16:39 – abb pcm600: Mail me please
10/09/2020, 20:26 – abb pcm600: Does anyone have a SIPROTEC 5 .sim file to share?
12/09/2020, 10:25 – abb pcm 600″: Single phase pick up and three phase pickup will be different for overcurrent
12/09/2020, 10:25 – abb pcm 600″: Protection in relay
12/09/2020, 10:26 – abb pcm 600″: Or not
12/09/2020, 11:00 -abb pcm600: In which relay?
12/09/2020, 11:09 – abb pcm 600″: 7SJ64
12/09/2020, 11:10 – abb pcm 600″: Idmt time at normal setting and 2 times current injection are coming same is this possible
12/09/2020, 11:41 -abb pcm600: At normal setting relay will pick up only.
12/09/2020, 11:41 -abb pcm600: Check the output trip logic
13/09/2020, 11:59 – abb pcm 600: Can I ask mechanical engineering related questions here or can someone please link me to a group where I can ask questions related to mechanical engineering?
15/09/2020, 16:21 – abb pcm 600: please share any test docs for csc162 sifang dpr relay
16/09/2020, 09:26 -abb pcm600: What indicates I2/I1 fault in ABB REJ 601 relay, on what condition it activates.
16/09/2020, 15:16 – abb pcm 600″: Can anyone clarify me LBB scheme 220kV
16/09/2020, 16:09 -abb pcm600: Can earthing of CT 2ndry neutral both side (at panel side and at field side) can cause this differential current ??
16/09/2020, 16:09 -abb pcm600: Does anyone have experienced this case ?

That a transformer differential relay tripped even when breaker is opened. ??

Some differential current flowing when breaker is openend
16/09/2020, 18:22 – abb pcm 600″: Always do single.point earthing
16/09/2020, 18:24 -abb pcm600: 👍👍
16/09/2020, 22:19 – abb pcm600′: In this case the current doesn’t flow in relay coil…it will circulate if both field side and panel side star point earthed
16/09/2020, 22:20 – abb pcm600′: Check DR…
16/09/2020, 22:21 – abb pcm600′: Hope it’s not triped with diff
17/09/2020, 06:13 – abb pcm 600: if transformer trip on diff. relay on through fault whats the reason.
CamScanner 09-17-2020 02.04.59.pdf
17/09/2020, 07:31 -abb pcm600: Check differential settings and harmonic blocking during energization
17/09/2020, 07:45 – abb pcm 600: ok
17/09/2020, 10:25 – abb pcm 600: can we disable external fault trip in micom p642 diff.
19/09/2020, 11:30 – abb pcm 600:
Dear house I still need support from mechanical engineers,after running the generator for 3hrs the turbine guide bearing temperature would rose from 50-62 and if the machine is not shutdown it will continue to alarm and trip point.
19/09/2020, 11:34 – abb pcm 600: Our plant has 6 generators of 96.4mw each,sundenly one of them developed high temperature issue from the turbine guide bearing. It is a hydro power plant
19/09/2020, 15:02 – abb pcm600: Increase the bearing temperature limit upto 85 degree
19/09/2020, 15:02 – abb pcm600: Set point
19/09/2020, 15:24 – abb pcm 600: Won’t that cause bearing burn out as all other generators doesn’t get up 58 degrees?
19/09/2020, 15:24 – abb pcm 600:
19/09/2020, 17:23 -abb pcm600″: What about the oil temperature in that system?
19/09/2020, 17:25 -abb pcm600″: If the oil temp is high, too the bearing temp will be high. So you need to inspect cooling systems for turbine oil.
19/09/2020, 17:32 – abb pcm 600: The oil temperature also do rise but as usual it should be lagging and that is what we are getting
19/09/2020, 17:35 -abb pcm600″: If you are using water in a cooling system, just inspect the water entry. Especially valves which allow cooling water to circulate.
19/09/2020, 17:42 – abb pcm 600: It’s self cooling, when the shaft rotates it stir up oil in between the gap between it and the bearing providing lubrication and cooling at the same time
19/09/2020, 17:48 -abb pcm600″: I know that. What I am saying is that for bearing to be at low temperature, the oil in its gap must be at low temperature too. But the oil is cooled by either air, or cold water system. So I am advising you to inspect cold water system or air system. Because this shows that the system that cools oil is not working properly.
19/09/2020, 17:59 – abb pcm 600: Ok sir,our system is an enclosed type,no water cooling system,and we checked all the breeder points but no issues.
19/09/2020, 18:00 -abb pcm600″: Ok continues to troubleshoot bro.
19/09/2020, 18:13 – abb pcm 600: Thanks so much
20/09/2020, 18:29 – abb pcm600: What’s is the use of IEC Station DIGSI 4
21/09/2020, 12:34 -abb pcm600: Could anyone pls share the Toshiba Relay documents
21/09/2020, 12:35 – abb pcm 600: which relay model
21/09/2020, 12:35 -abb pcm600: Will let u know..
21/09/2020, 12:36 -abb pcm600: How to communicate the relay.. Or wat documents available could u pls share it.. Thanks
21/09/2020, 12:36 – abb pcm 600: for which relay model
21/09/2020, 12:36 – abb pcm 600: particular model
21/09/2020, 12:36 – abb pcm 600: ?
21/09/2020, 12:37 -abb pcm600: 5 min
21/09/2020, 12:37 -abb pcm600: Will come back
21/09/2020, 12:37 – abb pcm 600: ok
21/09/2020, 12:56 – abb pcm 600: can be communicate with RSM100 SOFTWARE
21/09/2020, 13:16 -abb pcm600: 👍
21/09/2020, 21:07 – abb pcm 600: Hi guys….Any one have p543 test report format & test procedure kindly share me
22/09/2020, 01:20 – abb pcm600: Hello, how to check if fiber optic between two relays is a healthy connection
22/09/2020, 01:21 – abb pcm600: Siprotec 5
22/09/2020, 11:16 -abb pcm600: Anybody service provider near bagalkot karnataka.
Like : TL, T/f , ht Panel relay breaker, cables
22/09/2020, 18:00 – abb pcm600: How to make possible for these two devices to communicate, they are connected using optic duplex LC
22/09/2020, 18:26 -abb pcm600: anyone has 7SJ85 test procedure please?
22/09/2020, 18:43 -abb pcm 600 “: do you mean communicate as a protection interface for line diff 87L?
22/09/2020, 18:43 – abb pcm600: yes
22/09/2020, 21:54 -abb pcm600″: Check device id
23/09/2020, 11:36 – abb pcm600: Any body having ABB connectivity packages. ?
23/09/2020, 11:37 – abb pcm600: For witch device
23/09/2020, 11:37 – abb pcm600: REF615, REU615
23/09/2020, 14:51 – abb pcm600: I need help in alstom scada any one person
23/09/2020, 15:24 – abb pcm600: Any issues
23/09/2020, 15:47 – abb pcm 600″: This message was deleted
23/09/2020, 15:48 – abb pcm 600″: Use pcm600 available at ABB site. For all relion(RE) series
23/09/2020, 15:50 – abb pcm600: From ABB server(update manager) is very slow to download the connectivity packages.
23/09/2020, 15:54 – abb pcm 600″:
23/09/2020, 15:54 – abb pcm 600″: For REU615
23/09/2020, 15:55 – abb pcm 600″: For REF615
23/09/2020, 15:55 – abb pcm600: Tqvm
23/09/2020, 16:08 -abb pcm 600 “:

23/09/2020, 16:09 -abb pcm 600 “: anyone, please help me to solve this
23/09/2020, 16:15 – abb pcm 600″: It’s an old package. Temporarily change your system date to 20/5/19
23/09/2020, 16:50 – abb pcm600: Can i call you
26/09/2020, 12:01 – abb pcm 600″: Can anyone tell me how to test low impedance ref
26/09/2020, 18:50 -abb pcm600: Secondary injections or stability?
26/09/2020, 21:17 – abb pcm 600″: Secondary injection
26/09/2020, 21:18 -abb pcm600: I can email you a test procedure, are you using cmc
26/09/2020, 21:18 – abb pcm 600″: Yes
26/09/2020, 21:19 – abb pcm 600″: Mail me at
26/09/2020, 21:46 – abb pcm 600″: This message was deleted
26/09/2020, 21:46 – abb pcm 600″: Thanks
28/09/2020, 19:19 -abb pcm600: Anybody facing this issue
28/09/2020, 19:25 -abb pcm600: Anyone having 7SD522 SAS CONFIGURED PROJECT FILE?
28/09/2020, 19:26 -abb pcm600: I am facing problem for distance signals
28/09/2020, 19:26 – abb pcm600″: Hi anyone havi short circuit calculation data
29/09/2020, 09:08 – abb pcm 600″: Configure in extended system interface
29/09/2020, 09:08 – abb pcm 600″: You will get the signals which you require
29/09/2020, 10:45 -abb pcm600: If you have sas configured project file.share with me to my email
01/10/2020, 07:27 – abb pcm600: Need to apply 1500V DC voltage for testing.
Have anyone came through 1500V DC voltage injector kit.
01/10/2020, 16:34 – abb pcm 600″: In 220kV scheme with two main and one transfer bus does the logic inputs of TBC and Bus coupler are fed to that bay relay or not
01/10/2020, 16:34 – abb pcm 600″: Or using Goose it is done can anyone tell me
01/10/2020, 16:42 – abb pcm 600″: This message was deleted
01/10/2020, 16:42 – abb pcm 600″: Does anybody have GE relay engineer no.
01/10/2020, 19:44 – abb pcm600: If I am understanding correctly , I would say yes you would get that signals wired to your bay relay as inputs then if needed send it via GOOSE to any other relay that needs it for its logic.
01/10/2020, 21:03 – abb pcm600′: Only during maintenance you shift to tranfer bus through 89T…so bus bar protection should not Operate for tranfer bus…For bay units only bus isolators status ( 89A&89B) should be given. It should operate for Bus-A and Bus-B fault
03/10/2020, 14:09 – abb pcm 600 “:
04 MiCOM P442 Line Distance – Emad Wagih.pdf
03/10/2020, 16:11 – abb pcm 600: Like notes any available for other differential & busbar relays
03/10/2020, 16:21 – abb pcm 600″: 🙏🏻🙏🏻🙏🏻🙏🏻
03/10/2020, 17:54 -abb pcm600: Shukran Ya Handsa
04/10/2020, 08:26 -abb pcm600: Very very useful thanks
04/10/2020, 11:57 – abb pcm 600″: For directional earthfault relay uses positive sequetor negative or zero
04/10/2020, 11:57 – abb pcm 600″: sequence 04/10/2020, 11:58 – abb pcm600: Generally we negative and zero sequence not positive sequence 04/10/2020, 11:58 – abb pcm 600″: Oo 04/10/2020, 11:58 – abb pcm 600″: Ok 04/10/2020, 12:00 – abb pcm 600″: 04/10/2020, 12:00 – abb pcm 600″: Relay is showing neagative power instead of positive 04/10/2020, 12:07 – abb pcm600: In this case current is lagging voltage 04/10/2020, 12:08 – abb pcm 600″: How, it is leading 04/10/2020, 12:08 – abb pcm 600″: As PF is negative 04/10/2020, 12:08 – abb pcm 600″: In capacitive load current leads voltage 04/10/2020, 12:09 – abb pcm 600″: In inductive load cuurent lags voltage 04/10/2020, 12:09 – abb pcm 600″: Current
04/10/2020, 12:09 – abb pcm 600″: Our is inductive load
04/10/2020, 12:43 – abb pcm600: I guess real power is flowing in reverse direction.
04/10/2020, 12:49 -abb pcm600: You have to reverse the CT staring
04/10/2020, 14:09 -abb pcm600: U have to change the pq direction in Siemens bcu
04/10/2020, 19:08 -abb pcm600: Agree 👍🏻
04/10/2020, 23:47 – abb pcm 600 “:
02 P543 Line Differential – Emad Wagih.pdf
06/10/2020, 03:56 – abb pcm 600 “:
09 P442 Directional Earth Fault – Emad Wagih.pdf
06/10/2020, 04:12 – abb pcm 600 “:

Whatsapp +989129613659

06/10/2020, 07:13 -abb pcm600: -20201006-WA0001 (file attached)
06/10/2020, 15:05 – abb pcm600: Great work and content it will be beneficial for entry level engineers like me
06/10/2020, 15:07 – abb pcm600: Great fantastic work
06/10/2020, 15:08 – abb pcm600: If you have calculations for differential relay for transformer 132/33 , 132/33/11 Kv, can provide us with my regard
07/10/2020, 13:37 – abb pcm 600 “:
09 P442 Directional Earth Fault – Emad Wagih.pdf
07/10/2020, 13:40 – abb pcm 600 “:
08 ABB RED 670 Line Differential – Emad Wagih.pdf
07/10/2020, 13:42 – abb pcm600″: Directional over current (67)please
07/10/2020, 14:59 – abb pcm600: Eppadi irukkae
07/10/2020, 16:29 – abb pcm600: Possible to upload as pdf
07/10/2020, 16:51 – abb pcm 600 “: H
07/10/2020, 16:51 – abb pcm 600 “:

07/10/2020, 17:20 – abb pcm600: There are interference between drawing possible to amended and reupload
08/10/2020, 01:01 – abb pcm 600 “: I’ll try to convert it from my pc
08/10/2020, 01:02 – abb pcm 600″:
08/10/2020, 01:02 – abb pcm 600″: Relay is not time synced
10/10/2020, 09:13 -abb pcm600: What is SPS scheme used in Power station?
13/10/2020, 09:55 – abb pcm 600: plz. share me z graph micom software.
13/10/2020, 16:32 – abb pcm 600: in micom p442 relay how R1,R2,R3,R4 PP and PG CALCULATE
13/10/2020, 18:16 – abb pcm 600″: How-to measure resistivity of water
13/10/2020, 18:16 -abb pcm600 “:
Flash Report__Mumbai_Blckout_12_10_2020.pdf
14/10/2020, 08:26 – abb pcm 600″: Trafo is getting tripped at night in trafodifferntial
14/10/2020, 08:26 – abb pcm 600″: Even though there is no current in night why it is tripping on differential
14/10/2020, 09:17 – abb pcm 600″:
Can anybody tell me how to read this
14/10/2020, 10:57 -abb pcm600: Can you send complete DR for diff fault to my email
14/10/2020, 16:09 – abb pcm 600″: I am testing a mfm em6400
14/10/2020, 16:09 – abb pcm 600″: I want to change power factor
14/10/2020, 16:09 – abb pcm 600″: From lag to lead
14/10/2020, 16:09 – abb pcm 600″: Using single phase is it possible
14/10/2020, 16:15 – abb pcm 600″: Only positive and negative is changing in inductive
14/10/2020, 17:41 – abb pcm 600: anybody tell me how set the R1,R2,R3 and R4 P-P and P-G in micom p442 its very urgent
14/10/2020, 17:42 -abb pcm600: Which relay ?

Can you send fault data ? And DR
14/10/2020, 23:16 -abb pcm600″: Helow guys, who can help me how to measure the earth resistance using ground clamp meter.
15/10/2020, 16:06 -abb pcm600: Anybody have
Abb vd4 (vcb medium voltage) technical manual
Required Trip,close coil, etc details
16/10/2020, 21:41 – Fatima: Protection Relay Discussion Group in Telegram
16/10/2020, 21:52 -abb pcm600: Friends I have a doubt tat, what is phase over current, and over current in relays
17/10/2020, 17:15 – abb pcm 600″: Can anyone tell me what is Sf in earthing calculation
17/10/2020, 18:31 – abb pcm600: As I referred, it is the diversion factor for which fault is being distributed across the ground network through transmission line ground wires.
17/10/2020, 18:31 – abb pcm600: please share, your understanding from your reference.
17/10/2020, 19:15 – abb pcm 600″: Ratio of Ig/ 3Io
17/10/2020, 20:03 – abb pcm600: Not by an equation, pls explain in practical understanding.
17/10/2020, 20:03 – abb pcm600: Anyone pls
17/10/2020, 20:27 – abb pcm 600″: I am also not able to understand this formula
19/10/2020, 17:21 – abb pcm 600″: MTA is -15deg, rca is +- 90
19/10/2020, 17:21 – abb pcm 600″: Then angle will be 60-0-240
19/10/2020, 17:22 – abb pcm 600″: For earthfault
19/10/2020, 17:23 -abb pcm600: 75 0 255
19/10/2020, 17:29 – abb pcm 600″: Ok
20/10/2020, 14:11 – abb pcm 600:
20/10/2020, 14:11 – abb pcm 600: anyone having a manual for this relay
20/10/2020, 14:11 – abb pcm 600: plz. share
20/10/2020, 14:15 – abb pcm600:
ConAegis Reference Manual.pdf
20/10/2020, 14:15 – abb pcm600:
20/10/2020, 14:16 – abb pcm 600: also share communication software
20/10/2020, 14:19 – abb pcm600:
20/10/2020, 14:19 – abb pcm 600: thanks
20/10/2020, 20:57 – abb pcm 600: have anyone use kocos artes kit for test distance protection relay
21/10/2020, 18:36 -abb pcm600:
How much the knee point voltage of nct
21/10/2020, 18:51 – abb pcm600: Vkp = K * If/CTR * (RCT + RL + RR)
21/10/2020, 18:51 – abb pcm600: Vkp is the knee point voltage
21/10/2020, 18:51 – abb pcm600: K constant taken as 2
21/10/2020, 18:52 – abb pcm600: If – max. Fault current
21/10/2020, 18:52 -abb pcm600:
21/10/2020, 18:52 – abb pcm600: CTR is the CT ratio
21/10/2020, 18:53 – abb pcm600: Rct CT winding resistance
21/10/2020, 18:53 – abb pcm600: RL loop lead resistance in ohms
21/10/2020, 18:53 -abb pcm600: Thank you
21/10/2020, 18:53 – abb pcm600: RR relay burden
21/10/2020, 18:55 – abb pcm600: Or do knee point voltage test
21/10/2020, 18:55 -abb pcm600: What mean by 40Rct+400v in ct details
21/10/2020, 19:10 – abb pcm600:
21/10/2020, 19:34 – abb pcm600: <=40 ohm winding resistance 400v knee point voltage < 30mA at 100 volt while knee point test 21/10/2020, 19:35 – abb pcm600:
21/10/2020, 19:35 – abb pcm600:
21/10/2020, 20:22 – abb pcm 600 “:
22/10/2020, 09:46 – abb pcm 600: any contact no. of CGI RELAY
22/10/2020, 12:01 – abb pcm 600:
Greetings house,up till now our problem of guide bearing temperature rise has not been resolved. This sketch is my observation when the generator is operation but I’m not a mechanical engineer.
22/10/2020, 12:02 – abb pcm 600: Other generators doesn’t behave this way
22/10/2020, 20:07 – abb pcm600: How to test under Impedence
22/10/2020, 20:09 – abb pcm600: Setting is 0.02 P. U
22/10/2020, 20:32 – abb pcm600: Relay is REM545
26/10/2020, 13:56 – abb pcm 600: how to test micom p442 distance protection relay as well as setting.
27/10/2020, 18:31 – abb pcm 600″:
In transfer bus how the sequence of operation will be performed
28/10/2020, 08:47 – abb pcm 600: what is cause of tripping of incomer due to outgoing feeder trip on high set earth fault.
28/10/2020, 19:22 – abb pcm600: How to test pole slip
28/10/2020, 19:24 – abb pcm600: If anybody has some written material please share
30/10/2020, 18:19 – abb pcm600: Hallo everyone, Does someone have a standard calculation how many percent Current fault setting from Current nominal?, for Normaly invers and definite Time
30/10/2020, 18:30 – abb pcm600: For overcurrent protection
01/11/2020, 11:09 – abb pcm600: On Which side CT low forward power protection and reverse power Protection is generally there
01/11/2020, 11:10 – abb pcm600: Neutral side CT or Phase side CT
01/11/2020, 12:25 – abb pcm600:
01/11/2020, 12:25 – abb pcm600: What’s the meaning four step in this protection
01/11/2020, 17:02 -abb pcm600 “: Four steps means four different stages
01/11/2020, 17:02 -abb pcm600 “: 4 different level of NPS you can configure
05/11/2020, 17:04 – abb pcm 600″: Which version of digsi is compatible for window 8 ???
11/11/2020, 09:01 – abb pcm600: One problem we are facing that with stator earth intertern trip is also coming
Wiring checked what may be other problem
12/11/2020, 16:49 – abb pcm600: URGENT Requirement of Commissioning Engineers PLCC/SAS/Protection. – PAN India
Kindly share this information with yours friends and relatives it would help us in receiving the most relevant candidates for Job.
12/11/2020, 17:03 – abb pcm600:
12/11/2020, 17:03 – abb pcm600: Hi, can anyone help
12/11/2020, 17:04 – abb pcm600: I cant change the comm mode to RSTP
Updated the firmware to P14231QB….B60L.
12/11/2020, 18:02 – abb pcm600: Can anyone help please?
13/11/2020, 10:11 – abb pcm600:
13/11/2020, 10:11 – abb pcm600: How enter in setting mide
13/11/2020, 10:12 – abb pcm600: Setting mode
13/11/2020, 10:25 – abb pcm600: Anybody please help
13/11/2020, 10:25 – abb pcm600: I am in trouble
13/11/2020, 10:39 -abb pcm600: What do you want to do in settings?
13/11/2020, 10:44 – abb pcm600: To view setting only
13/11/2020, 10:44 – abb pcm600: And to check measurements
13/11/2020, 10:44 -abb pcm600: Press down arrow
13/11/2020, 10:44 -abb pcm600: System data will come
13/11/2020, 10:44 -abb pcm600: Then press right now
13/11/2020, 10:45 -abb pcm600: You will find measurements, configuration, settings
13/11/2020, 10:46 – abb pcm600: I found these now
13/11/2020, 10:46 – abb pcm600: But I am not able to enter to any option
13/11/2020, 10:47 -abb pcm600: If you founds measurements, you have to press down arrow
13/11/2020, 10:48 – abb pcm600: Yea i am pressing but nothing is happening
13/11/2020, 10:49 – abb pcm600:
13/11/2020, 10:51 -abb pcm600: You have to reset the trip and alarm,then you try
13/11/2020, 10:51 – abb pcm600: How to do this sir
13/11/2020, 10:52 -abb pcm600: Press the book 📖 symbol
13/11/2020, 10:52 -abb pcm600: It will show all Alarms,then press c
13/11/2020, 10:53 – abb pcm600: I am pressing book key but nothing is happening
13/11/2020, 10:54 – abb pcm600: How come out of this menu
13/11/2020, 10:55 -abb pcm600: Press c
13/11/2020, 10:58 – abb pcm600: Nothing is happening by pressing c key also

Whatsapp +989129613659

13/11/2020, 10:58 – abb pcm600″: Can u send the photo
13/11/2020, 10:59 – abb pcm600:
13/11/2020, 11:00 -abb pcm600: Troubleshooting or testing?
13/11/2020, 11:01 – abb pcm600: Testing
13/11/2020, 11:01 – abb pcm600″: While pressing c any password is asking?
13/11/2020, 11:01 – abb pcm600: Nothing
13/11/2020, 11:03 – abb pcm600″: Once u can restart nd do the same
13/11/2020, 11:04 – abb pcm600: Sir how to restart
13/11/2020, 11:05 -abb pcm600: You have to switch off the relay,wait for some time then switch on.
13/11/2020, 12:24 – abb pcm600: Ok
13/11/2020, 12:25 – abb pcm600: But working
13/11/2020, 12:25 – abb pcm600: Not working
13/11/2020, 20:48 – abb pcm600:
13/11/2020, 20:48 – abb pcm600: What’s the meaning of I/I in the setting
13/11/2020, 20:49 – abb pcm600:
13/11/2020, 20:49 – abb pcm600: What’s the meaning I/In in this
13/11/2020, 21:11 – abb pcm600: Any body please suggest
06/12/2020, 10:00 – abb pcm600:
07/12/2020, 13:14 -abb pcm600″: Freelance relay engineer wanted. RET670 relay testing, configuration and retro fitting in Chennai.
If anyone interested let me know.
8/12/2020, 21:19 – abb pcm 600″: How compensation factor is used in distance relay
07/12/2020, 21:19 – abb pcm 600″: Can anyone tell me this
08/12/2020, 12:01 – abb pcm 600″: When I change the star point then does protection operate or not
08/12/2020, 12:01 – abb pcm 600″: In case of non directional overcurrent
08/12/2020, 12:03 – abb pcm 600″: Relay is showing power in neagtive
08/12/2020, 12:03 – abb pcm 600″: So I want to change the polarity
08/12/2020, 12:59 -abb pcm600: It will operate
08/12/2020, 13:00 – abb pcm 600″: In directional it will not
08/12/2020, 13:02 -abb pcm600: Depending each direction (reverser or forward ) starpoint to consider
08/12/2020, 13:16 – abb pcm 600″: I have set as forward
08/12/2020, 13:17 – abb pcm 600″: This message was deleted
08/12/2020, 13:17 – abb pcm 600″: P1 is bus side and P2 is line side
08/12/2020, 13:19 – abb pcm 600″: With S1 as star point
08/12/2020, 13:37 -abb pcm600:
08/12/2020, 13:38 – abb pcm 600″: Ok
08/12/2020, 14:03 – abb pcm 600″: When I am shorting the TB for changing the meter the current is still not zero
08/12/2020, 14:03 – abb pcm 600″: It is showing as 5A
08/12/2020, 14:03 – abb pcm 600″: Actual load current is 64A
08/12/2020, 14:03 – abb pcm 600″: After shorting it is showing as 5A not 0
09/12/2020, 14:09 -abb pcm600: Please Share 7UM6211 Test Report
12/12/2020, 16:57 – abb pcm600: Anybody if has CTNM31 Manual please share
14/12/2020, 18:35 – abb pcm 600″:
14/12/2020, 18:35 – abb pcm 600″: Is this a balanced phase
14/12/2020, 18:35 – abb pcm 600″: Or Y and B interchanged
14/12/2020, 18:37 -abb pcm600: Yes the rotation is clock wise
14/12/2020, 18:37 – abb pcm 600″: According to me it is ACB phase sequence
14/12/2020, 18:37 – abb pcm 600″: Ok
14/12/2020, 18:38 – abb pcm 600″: So Y and B needs to be interchanged
15/12/2020, 16:25 -abb pcm600 “: Gents
Am asking if anyone in here knows how to run two generators in parallel and kindly assist with the schematic diagram
15/12/2020, 16:26 -abb pcm600 “: I have two generators

To join our protection relay WhatsApp groups, please send “interest” on Whatsapp +989129613659

Whatsapp +989129613659





protection relay 2 Discussion

– During one phase PT failure, will overflux relay work? Has anyone seen this kind of voltage transformer connection?
– Why b phase winding is grounded on the secondary side?
– Can u share nameplate details of the PT
– yes, in an oil company, usually they only use 2 PT input and make it as delta connection in the relay
– That’s an open delta voltage transformer (or potential transformer)
– It’s mainly used as an input to detect earth faults using neutral voltage displacement.
– Typically the sum of the voltage across D7 and D9 is zero ….however should there be an earth fault and one of the phases hit the ground … you will get voltage across the open point
– Such schemes are used in ungrounded systems or on generator – transformer sets …. there is no path for earth fault
– Sorry open wye … but the scheme is the same …
– Open delta connection, Yellow phase normally will ground.

But as per the drawing seen some conflict.
Normally 2 VT Winding we can see.

– This is a star connection with y phase grounded. Not an open delta. I was reading on the internet it’s some old practice followed in the UK.

– Anyone has any experience with diesel Genset paralleling on the common neutral resistor
– Any drawing, and what you wanna know about?
– How many generators can work connected to the resistor and how many can work isolated in parallel mode. That’s a very big open question.
– Yes, it is really problematic to solve its protection system
– Yes we typically run the neutrals to a common neutral bar. Install at least 3 the neutral earthing resistor and contactors
– Are you talking about medium voltage generators
– Yeah.
– How did you calculate the size of resistors
– Please, can you share some calculations?
– I need a setting guide for directional protection
– If any example for Double feed SubStation with the tiebreaker normally closed
– What is the Apts scheme?

– For this system, with the two Transformers secondary breakers and the tiebreaker are normally closed, and installing directional on the two secondaries, I need some guidance on how to make the setting for the directional, And if anyone has a similar case I will be glad if he shares his settings and how to Make them?
– the intention of the Directional on the secondary side is for backup protection? I ever encounter an application that uses the secondary side 67 as a backup by looking up into the transformer and if it operates it will trip both HV and LV. – Can anybody share about the zig-zag transformer? Principle operation of it.

– Anyone has SR 469, SR 650, and SR 750 test formats? Which is the software used for these relays? Anyone pls help.

– what could be the cause of the SF alarm?
– PLC is communicating with another PLC over Profibus
– Well, it can be a lot of stuff, but the first thing I always have for this alarm. SISTEM FAULT means that you may have some unit programmed inside your PLC that is not connected in the field.
– So if it still works let it be
– with that alarm all parameters of slave address become red
– This is not something to concern, just be sure you have a good backup of the PLC program. but if it remains, it will not let startup of Engine
– Yes, but if it is already working, maybe is only a module programmed in the PLC but not connected in the field, but I say, I saw processes going on for Years with this SF, and nothing ever happened.

Electrical engineers can join our WhatsApp groups and easily talk to engineers around the world. plz text on Whatsapp:+989129613659

– we have a problem in the Genetaror Micom P343 that does not boot, please help us how to fix it, thanks
– Check the ribbon resistance of hmi to relay. We have faced the same and ask Alstom ..then after they checked and replace the ribbon, and fix the issue.
– Where is the ribbon?
– Open the front side of the relay then there is a connecting ribbon cable u can find
– This, not Bad contact Ribbon the message is clear (Micom Booting) with Led Alarm lightning in red Fast…
It’s like PC booting, I think it’s a microprocessor issue
– We have faced the same problem in our reliance industries Jamnagar plant and Alstom itself give us a solution and change all the ribbons. Micom rebooting issue may be from the HMI problem/relay power card problem but if it comes even after replacing HMI look forward with manufacturers. It’s not just like pc booting issues. There is no chance of error in relay or bugs like a microprocessor.
– I might be wrong but I share what I experienced with the same problem.
– Any vacancy for Facilities Manager
– How do I determine distance characteristic in the L90 GE relay
– do someone has a commissioning manual for L90 relays

– hello good morning everyone, will any of you have high voltage protection information?

– I want to know what you guys as an Electrical Department are doing to fight COVID 19 in their workplace.
– 132kv circuit tripped showing R Y B phase and zone 1. And the same circuit is energized from another end at no load. Also, no-fault found on the circuit during patrolling. What will be the fault? Distance Relay type micom P 441. It could be transient or pic up fault
– Does it show any distance in zone 1?
– Grid staff is not too efficient to check the fault recorder. I will go to check it tomorrow and will discuss it again
– What is the status now does the line charged from both ends?
– Only from another end at no load
– Sir but usually these transients will be blocked by numerical relays rights
– I think it may be DC grounding
– Check the fault recorded to see the fault current and voltage
– Lighting
– Depending on the magnitude and relay Makes. We have had similar invent without any trace to a physical cause
-can you share us the Comtrade file

– What is the standard setting of the characteristic angle for directional overcurrent phase and ground (67/67N)?
– does somebody has this relay technical manual ABB PCD for recloser

-Hi anyone has a static VAR compensator (SVC) protection scheme that can share?
– What is the standard setting of the characteristic angle for directional overcurrent phase and ground (67/67N)?
– For typical distribution networks (up to 33 kV), I set it to 30 degrees. For sub-transmission/transmission, I set it to 45 degrees, between the current phase and voltage polarizing quantity.
– However different scenarios may require different angles … and have to be worked out.
– This angle for directional phase overcurrent? What about the angle for directional ground overcurrent 67N?
– Are there any references for how to Make the setting for directional phase and ground overcurrent 67/67N?
– I would typically read the relay manual, And use the default recommended value. The actual math behind setting them can be very tricky.
– Which relay are you using?
– Sepam s40
– The application is two parallel Transformers
– What’s the voltage level and how far is the relay from the supply transformer?
– From experience, RCA is 20~40
– For 67N, the value is dependent on the type of grounding. Please refer to NPAG, it was clearly explained there
– Anyone has a digsi4 Activation Key? And for 67, if I am not mistaken, RCA is set based on the impedance angle of the system

– Anyone tested Transformer DIFFERENTIAL 7SR242 DUOBIAS. I have some doubt on bias characteristics..!
– This is the complete manual, but the bias equation is not clear on it..!
– Does anyone here got any information about ct accuracy class 0.1 PL 270 R6
– I want to know knee point voltage and resistance

– Install Studio Enterprise this is combination of all scada & it will work as per your lisencing

-Does anybody here has experience with Toshiba relay GRL 200?
– I want to ask about the IO config
– Why don’t you Let admin look into it27etap, 09:16 – abb pcm600″: Please send me any study material regarding AVR
– For a substation
– Little emergency for my undergraduate project
– I can send you the datasheet of Engine AVR
– ABB Unitrol 1000

– I have to change CT/VT ratio in an Elster A1800 energy meter. Already got established communication with the meter via Metercat 3.5 software. I believe CT/VT ratios can be changed via function “Program” but I am not able to proceed as everything at the “Program” popup window is grey (not editable), I request you to support me in changing the CT/VT ratios.
– You have to enable changing xt ratio on parameters function

– There is no Parameter menu in Functions? please clarify in details or send some snapshot
– Hi Guys, I have a question for 220KV level, which is suitable either CVT or IVT(PT)? And why Usually we are adopting IVT(PT) in Andhra Pradesh India
– CVT always
– Sir can you please support your statement… As we have observed the drift in secondary voltages are more in CVT compared to IVT over a time span
– Mainly installation reasons. they are lighter, cheaper, Safer (transfer of emf when a fault occurs)as there is no direct connection to the primary voltage source.
– Can you explain how does the voltage drift?
– Deterioration in the capacitance levels over a period of operations results in variations in secondary voltages Can’t that be fixed during maintenance? (Note: I don’t have any experience in maintenance and operation Even I don’t any experience in Maintenance. But I am not sure we can improve this ineffective manner)
– CVT for transmission circuits or High Voltage i.e greater than 66kV and IVT for distribution circuits 33kV and below
– Moreover, we are mostly using IVT in 220KV levels also so, I am not aware of fixing methods. I believe it’s a cost trade-off. In India IVTs in 220kV class are more affordable than CVT. And yet you may see them actively used in 220kV stations where the transmission system is at 220kV level. This is because the same CVT would be used as a coupling capacitor for PLCC communications as well.
– That’s my understanding
– Why when we calculate short circuits at transformer secondary we should consider no-load ph to phase voltage not rated voltage?!
– Yes.CVT is more affordable to be used since the consideration of its(equipments) isolation to H.V.
– Yes, we can track and analyze its dissipation factor( Tan Delta measurement)
– Which position?
– This is an AVR relay from ZIV bringing.
-anyone has the pin configuration of this relay?
– If you mean bias setting, then I would say it has to be calculated based on the transformer parameters
– Hello everybody, good morning. any of you run the digsilent program?
– What /which are the switching operations and commissioning procedures of HV / EHV equipment considering the safety rules of power system operation?
-P94V Undervoltage relay showing continuous trip, but no alarm present and all functions disabled, need technical support .can anybody please help.
– Go to view record and reset led Did, but still not going
– To increase the contact Resistance with Ground!

-To minimize step potential

– Why stone and whether it’s the only solution?
– Cheapest
– Another reason stones are used is ‘cause it helps in the fire. mitigation, especially where oil traps/ sump pumps are not available.

– The leaked oil will have less surface area exposed to air that can burn, thereby reducing the fire hazard.
– Weather dry sunny temp 35c approximately Fault 132kv lighting arrestr and HV bush of power transformer 20/26MVA damaged
– 132kv CT side clamp
-Counter of lighting arrestr
– Lighting arrestr
– Structure damaged After fault jamper
– Analysis as per our senior-most retired chief Engineer such type of fault occurs due to delay of lighting arrestr counter delay. This type of fault occurred in Pakistan time by a time where lightning arrestr having counter are installed. Due to delay HV bush of power transformer also damaged
– Did the Hv bushing passed the lighting impulse test?
– At the time of manufacturing or now
– Bushing may be damaged due to pressure of conductor available 132kv surge arrester if required plz context 03214484444
– I wonder if you have the fault recorder of this lighting surge impulse on your relay
– Are there any lightning arresters at the top of transformers firewall/ other location?
– What’s the fault in the protection relay or fault recorder?
– Ds agile documentation please, guys how can I get cooling oil for a 1000 volt transformer
– What is the relay saturation of the IDMT curve in sepam T80 and S82?

-Any have experience In Reyroll Relays.! I need help with how to change the “Out of service mode”.

– We need to do an 87L test, as you can see in secondary current to relay is very low 0.044A. We did secondary injection for GE L90 relay and found it doesn’t read 0.044A. Value is fluctuating and getting stable at 0.1A.

– Any ideas why the 51N protection of the REF615A relay operates in an almost constant time of 0.06 seconds
– reviewing the operation curve the minimum operation time is 0.02 seconds at least the first 3 tests would have given me the correct value
– check the other seating. Check the type of curve selected in the relay, Whether it is definitely time or IDMT
-1 group setting might b clashing with another one, check all stage settings group-wise.
– Work Is for Automation Visit in Kolkata. Just visit the site at Kolkata only people from Kolkata plz contact me.

– A Power distribution full project including design of LV and MV component
– 40mva x-mer tripped on differential during charging of 33kv feeder with Idr= 0.49pu, Idy= 0.50pu and Idb,= 0.53pu.
Both side LA has physically verified and found ok.
– Did you check the %of Harmonics during charging from the DR?
– please do a stability test and after that examine the results.

– might anyone have the design book of transformers with CRGO steel core and amorphous metal core
– Please guide how to reset DR full alarm in DPR micom p442 Schneider electric
-Maybe you can right-click on the device and select supervise device

To join our protection relay WhatsApp groups, please send interest on Whatsapp: +989129613659

– Anyone has a VALANCE book on “How to Test Breaker Failure Element Logic”?

– I have a problem with Micom P443 for Distance Protection. I have a problem with System Checks for Autoreclose, anyone can tell me what is the difference between CS1 Close Enable dan C/S AR Immediate?
– Cs1 close enable is the setting of sync check on which you want to recloser the circuit breaker like on Live Line Live Bus or Live bus Dead Line or Dead Bus.
– If you enable c/s AR immediate then it means that if during the dead time system check conditions are met then it will reclose the breaker without waiting for the remaining dead time period,
– Like for example if dead time is 1 sec
– And system check conditions are met during 0.6 seconds of dead time, then the relay will give reclose command without waiting for the remaining 0.4seconds of dead time. But you have disables the system check conditions on shot1 which means it will reclose the breaker without looking into any system check conditions,
– Sys check on shot 1 should be enabled too.

– Hi Guys I have a question: what is the problem with a 3phases motor run by A frequency driver, if I want to run it very slowly for instance at 4HZ normally it runs at a modulated Frequency variable between 50Hz and 0 but what happens to a very low frequency?
– I know that it will run slow, but it will warm up a lot right? but more than that what will it happen? somebody, some documentation to explain this phenomenon?
– It depends on the loading. The higher its loading, the more power needed to turn the output torque. If you don’t have a load, just make sure your lower frequency setting has a minimal current to move the rotor..otherwise, it will overheat.
– I even reinstalled my windows not going, I checked internet settings also

– how we can develop an HMI screen of operator name tag id selection in Schneider Vijeo Designer Basic HMI software
– Can Anyone suggest or provide a link for low-cost alternatives for moxa Uport 1150 type connectors with similar capabilities?
– USB to Serial converter

Click on picture for more info about our courses

– Does anyone have sft sav diagnostic software for sepam relay?
– Does Anyone Have the knowledge of selec twix-2 PLC communication with Schneider HMI
– Please have someone ever configured SEL 487B busbar protection?
– The SEL Technical Support Line is available at +1.509.338.3838

– does anybody here has the SUE3000 configuration tool
– Some example of End Fault Protection with SEL 487B??

– Anybody can please share with ME Schneider Software SFT SAV?
– what does this number means 6000 of this RCD?
– It can open currents up to 6000A. 6kA
– Note it’s RCBO not RCD
– What s the difference? Because some tell me it is the max number of trips. RCBO stands for residual current circuit breaker. It can open faults up to 6000A. It can be used for short circuit protection as well as sensitive faults of 30ma. RCD is a residual current device. It’s used only to pick up sensitive 30ma faults. They can’t open full short circuit currents. -Think of RCBO as RCD+MCB
– No it’s the rated fault level.

– We have the following problem with ER make DUOBIAS relay for Transformer differential protection
– Can anyone guide what to be done with this?
– Hi anyone has testing commissioning motor differential protection relay procedure please Sharing
– Short circuit level for this device
– This kind of error shows in sverker 900 Megger relay test kit anyone has an idea what is this?

– Maybe you could try to restart the device. And try to jumper each phase RST to neutral phase.
– Jumper are arranged like this is it ok?
– I have restarted the kit but it not working
– Jumper I1to neutral, then I2 to neutral, and so on. Simultaneously inject small current to monitor the device voltage ports are also not working
– How about the current ports?
-They are also not working
– Make sure when you start the device the knob selector in an off position.
– Check the fuses too

– Does anyone know if you can force or simulate voltage on an ABB relay? That is, without using a device like Omicron
– someone helps, how can I test the GE L90 diff relay as a stand-alone…without connecting with another one. You can only force digital outputs and simulate inputs. You can’t force analog signals such as voltage and currents. You need an external source
– I’ve never dealt with this relay but If it is for line differential, chances are that you’ll need two relays. the receiver and transmitter
– But you can still use the primary injection method to do the testing
– Do you have to test line differential?
– You can go to setting, testing, channel test, and loopback. Inject currents, the relay will consider one current as local and one as remote

– Hello guys, I’d like to ask maybe some of you ever test this type of relay?
– Where we can find the tms
– I think tms is 2
– TMS is nothing but a round dial
– Yes it is 2
– In this case, it’s 2

– for ref relay input problem. Ref620
– From the drawing, check the terminal point associated with this input. Isolate it then troubleshoot that circuit to find out where the “high/positive” signal is coming from
– why inside relay see this message drawing as not a problem?

– I am working with a 2X300 MW thermal power plant in India and our 400 kv switchyard is having Alstom MICOM P 441, REL 670 for protection also for the generator we are having siemens make 7UM622 and MICOM p345.
Is there any standard that speaks of about frequency of relay testing?
– Normally frequency of Numerical Relay testing depends on the utility practices.

– In our utility, we do annually. But in my opinion, it is not required annually.
– Numerical relay can be tested 5 years once. Scheme testing can be done annually.
– anyone has a crack version of IED smart or IED scout for IEC 61850 simulation?
– How to do scaling of this pressure sensor
– these transmitters are of a fixed range
– 615 series?
– try to use a new project. if still like that try to factory reset the IED but if it still operation

join our protection relay WhatsApp groups, please send interest on Whatsapp: +989129613659

– How to connect GPS to this siemens relay 7VE632
-synchronization via IRIG-B
– someone assist me with cpc 100 software.
– You either need IRIG B port on GPS receiver….or you need NTP to IRIG B convertor

– Please find below the parameters you are expected to use as discussed with RTM;
Reactance = 0.2215 ohm/km
Inductance = 0.20808 ohm/km
Suseptance = 0.07573 ohm/km
Distance = 313km
– Please how can I find the positive and zero sequence impedances from the above parameters thanks
– 400 KVAR 90 UNITS. 132KV CAPACITOR BANK. neutral CT 5/5. 132kv CT 400/5. Capacitor protection or unbalance relay current setting? Relay type SPAJ 160 C
– Normally Unbalance protection has one special other CT different from CT 132kv phase or CT neutral but if This CT 5/5A is just for SPAJ protection we adjust setting unbalance between 10 (..)20% In for nominal current this CT 5/5A

– Please explain the working of reverse power relay at consumer end for the small hydropower plant of declared capacity 24.75 MWWhat is recommended Characteristic angle for Directional Earth Fault protection (67N) on SEPAM

-Sepam relay is on the closed-loop network.
-System grounding: resistance grounded (Two NGR Prallelled: 2x800A: 1600A).
The type used for 67N on Sepam: Type-02 (the protection function uses I0 vector magnitude).
Residual Current input on Sepam: Calculation of Summation three-phase current (not residual CT).

If anyone interested in ETAP discussion Whatsapp group, send ETAP on Whatsapp: +989129613659

– I want to know if my raw data for the sensor is 0 to 32767 and I wanted it to show in HMI in the format of 0 to 100 bcoz if in system sensor mistakenly get faulty or I have to replace the sensor and the sensor of any other company in my system, so due to this I can change from HMI raw data in the format of 0 to 100 is it is possible?

– Hello, Micom p-243 protect compressor after start 15 minutes then trip. The indication in local HMI (motor fault alarm )but in the protection relay no indication but became an open position. When I go to the record I see this in the pic
– I do isolation resistance for motor by using 5kv meggar the result was 4Gohm

– In HMI how to create operator name error
-It’s over Current, what’s your starter motor current start pick and protection Micom configuration?
– Respected members, Please guide me on how to carry out the Hi-Pot Test/Dielectric strength test for 22kV 3ph Breakers/Bus bar.
-If the available source is DC for testing, how much voltage is to be applied, and any references of the standard for the same.
– How to write scripting language for 0 to 50 Low and 50 to 100 high value in C programming for HMI?

– on Nari pcs9611 relay, when powered on it displayed sub supervision Alarms? Alm-device, Alm -time sync.
How can I cancel?
– set the time synchronization to off instead of sntp
– Under settings?
– under device config or communication.

– Does anybody has ZX0 ABB switchgear O&M.manual
– Especially Gas handling procedures
– HB 600-05 en
– HB 605 Gas handling Manual for ZX0
– I have tested my lightning arrestor for 11KV after removing it from the line and the IR value was 400 meg.
– A few minutes later I have tested it again the value raised to 15 Gig.

– Please I need the manual of Siprotec 7SA87
– Hello everyone, could you help me with the function of the TC1 on the delta winding?
– It’s a current transformer for the winding temperature gauge

– someone knows what is the difference between I> and I >>?
– I> is the short time protection setting and I>> is the instantaneous protection settings of the overcurrent relay
– Can somebody tell me what happened if the tripping coil resistance and a closing coil resistance of vcb are the same? then there is any impact on the performance of vcb?
– You can return to the datasheet of the circuit breaker and closing and tripping coil, you can find the standard values of the resistance of the trip and closing coil and compare it to the measurement
– I just want to know the theoretical answer Behind this.
– From an electrical engineering point of view
– closing coil resistance is designed much less than tripping coil resistance to having a stronger magnetic field
– Yes I know it is designed, but my question is if they are the same then, what happened?

– does somebody here have some “how to configure Modbus protocol in SEL relays” document or some kind like that?
– Someone has a method statement of Testing CVT Tan Delta

Click on the picture for more info about ABB PCM600 course

-Does anybody have a project for the RED670 relay?
– Anything, in particular, you are after !’vv?
– Current line differential relays are fairly straightforward?

– Anyone knows what is the problem when a source (power plant) transmits power to a substation, then the neutral current monitored in the power meter is a bit higher normally?
– I know that It means that there is an unbalance current on each phase. But what else can be that causes the phenomenon?
– The P.F on phase R and S are lagging 0.9, but phase T shows a leading P.F.

– In case it’s an internal fault, just assume that the 87 T relay and Ref relay will trip?
– your understanding is correct. But apart from it, if primary Overcurrent (50/51P) works, it will trip the CB 150 kV, and how about the CB 20 kV?
– Is it required to trip the CB 20 kV too?
– 87T trip, REF not really, depending on the fault. PP fault or 3P internal fault won’t initiate REF
– To isolate the power from LV side too, in case of bus section in 20 kV side is closed
– Depends on the control scheme we use in most of the cases we adopt if HV side CB trips on protection LV CB also gets trip, REF is more sensitive for earth faults in the differential zone. If it is an earth fault REF trips faster than Diff.
– I think that 20 kV CB will need to trip too to prevent reverse power from the remanent voltage (power) at Bus 20 kV side. But if there is a remanent voltage on the 20 kV side, is it possible to induced voltage in the primary winding to create a current.
– Since you have NGR, earth fault close to neutral may not be detected by REF.
– Percentage of the unprotected zone can be calculated based on relay settings and CT ratio.
– Yes. due to the resistance, the sensitivity will be limited.
– Have everyone ever tried to the induced voltage on the secondary winding of step down Transformer i.e. let’s say 150/33 kV. How about the primary winding transformer, does it will generate a low current or a harmonic current?
– Actually, fault moves towards the source. In actual LV will not trip because the fault current will move towards the source side(150kv) side but if inter trip function is available then LV 20kv side will trip too
– Anyone knows about the calculation to get the value of Z1 Sensit. Iph>1 ?
– Fault current should be above this value to identify zone 1 or zone 2 faults
– I got it. But how to get this value.
– Okay. I have found it was 1.2 x CCC / CT Ratio
– CCC indicates which value? please clarify I have doubt about the Current Carrying Capacity Of the conductor
– In Distance Relay
– Anyone knows the CB IS( In-Service) Time function?
– Since I close my CB then the IS time starts to count to set AR Block
– If CB is manually closed then after this time CB will be considered in service and the Auto Recloser function will be enabled too.
– But why it AR block indication appear.
– After the CB IS Time starts to count. Still struggling on this distance relay
– Because during CB IS time AR Function is disabled to block the AR on SOTF fault, change to ABB REL670
– What type of relay is this one?
– P443 Micom
– does anybody here has a p14d Modbus register
– who knows the ZIV default password
– Any ZIV relays specialist
– Hello all, does anyone has a GRL 200 Toshiba Line Current Diff Manual Book?
– Four corner numbers 7931

Join 20 WhatsApp groups for protection engineers

20 WhatsApp Groups for protection engineers

  • WhatsApp Grp 01: Protection Relay – General
  • WhatsApp Grp 02: Substation Automation – General
  • WhatsApp Grp 03: Transmission line protection
  • WhatsApp Grp 04: Transformer protection
  • WhatsApp Grp 05: Motor protection
  • WhatsApp Grp 06: Generator protection
  • WhatsApp Grp 07: Overcurrent and Earth Fault Protection
  • WhatsApp Grp 08: Busbar protection and Bay controller
  • WhatsApp Grp 09: Breaker protection and control
  • WhatsApp Grp 10: Protection Relay Testing and commissioning
  • WhatsApp Grp 11: DIgSILENT
  • WhatsApp Grp 12: ETAP
  • WhatsApp Grp 13: PSCAD
  • WhatsApp Grp 14: IEC 61850 configuration
  • WhatsApp Grp 15: Switchgear GIS & AIS
  • WhatsApp Grp 16: GE Relay Configuration
  • WhatsApp Grp 17: SIEMENS Relay configuration
  • WhatsApp Grp 18: Schnider Relay configuration
  • WhatsApp Grp 19: SEL Relay Configuration
  • WhatsApp Grp 20: ABB Relion configuration or more services, send a message to our WhatsApp support number: +989129613659

Sample discussion:

– I have a Zivercom relay for the Tap changer. everything looks fine but it’s not Tapping who can assist tanks
– is anyone familiar with Siemens Siprotec 4 7SD Line Current Differential Relay? For example, one end of the relay is select in Commissioning mode(test mode), will the remote end relay differential protection be in commissioning mode or test mode also?
– Commissioning mode at one line end will not turn on commissioning mode automatically to another side. Plus commissions mode is completely different from test differential mode.
– Can you explain a bit more about the test differential mode?
– Does turning the test differential mode at one end will also activate the test differential mode of the remote end?
– Anyone REM620 relay this message what problem
– Anyone has the actual standard IEEE 485 or an excel sheet? I need to size the substation battery charger, please!
-IEEE 485-2020?

– Does anyone know what these signals are used for?
– Apparently, they are permissive of Switches
– the arrangement of the substation is as follows
– Have anyone tested Cap bank differential protection in Siprotec 5 7SJ85 relay?

– constantly getting this error while writing to the IED
– delete the HMI page first
– do the license update tool
– Does anyone have software for this relay micom2.1?
– I have found Micom software if anyone can give Ziv software as well plz
– In our substation incomer feeder is tripping downstream and upstream without any fault when switching on outgoing feeders.
– Please suggest any idea to solve the above-mentioned issues
– What fault recorded by the relay?
– There is no fault on the relay but upstream and downstream are tripping when switching on any outgoing feeders.

To join our VEBKO WhatsApp group, plz text our support team on WhatsApp: +989129613659

– Any circular regarding the fair service life of various testing equipment in the power sector.
– Hi, has anyone ever replace these manual annunciator window tiles with a 3rd party tiles? or other alternatives?
– We are facing this kind of rebooting issue with the AREVA Micom P742 peripheral Unit for busbar protection. Anyone have any idea regarding this issue. How to overcome this?

Protection Relay Discussion Group in Telegram:

– Can we use a 10 ac drive on a 15 hp motor?
– 12.5 hp drive on 15 hp motor
– Hi All, do you guys ground the shield of control cables at both ends or only a single end?
– Single-end
– How about for CT VT Cable?

– May I know would there be an issue if we use a CT with a high Burden (15VA for example) for a protection relay (microprocessor type). For the old mechanical type, I understand that the CT need a higher burden to drive the armature
– when I turn on the generator in this panel my generator has an unstable frequency but when I operate it manually the frequency stabilizes. what may be the cause of this?
– Is your gen-set in synch with other gen?
– no sir.
What is voltage?
– plz check the gain & another setting for your operator panel
– 460v
– there is no problem with the engine & gen-set itself it is the only problem with the operator panel feedback signal which will be generated as per setting
– Cause freq regulation is in generator itself not in Woodward
– we try to bleed fuel on the generator. but nothing happened
– I thought Woodward only does parallel synchronization and some protection functions but is only using small loads that’s why we don’t sync our generators.
– I looked at the manual for easygen. Actually, there is a function frequency control. I have the same system
– But never got time to check every function in Woodward.
– I do check some functions but the configuration has a password. the management told me that the supplier has the access to its unit.

– does anyone knows about arc resistance and tower footing resistance value for the 765KV transmission line?

– I need to disable goose controls in the REF 615 ABB relay. Is it possible from HMI?
– who can assist me with an IED scout that’s licensed REG630 how to testing method DOPPDPR function Power Angle setting anyone to have a formula
– Could anyone be having transformer test guides preferably based on megger make test equipment?
– Paci’s configurator from Schneider, can anybody have this software if yes kindly send me the link, it’s urgent please help me
– Somebody has REX640 TERMINAL DIAGRAM?
– Does anyone know how to choose a zero-sequence transformer?
– In VAMP300 relay display LED continue to glow without assign, without mapping with DI points… what is the issue please kindly suggest!

– Need help in ABB RVC APFC Relay programming.
– If anyone has a license for REB500. Can help me, please.
– ABB normally do not release that license which allows you to configure
31etap 12:00 – abb pcm600: The user license there isn’t much you can do with it.

– Kindly someone tells me that in C264 Relay, how to change synchro-check parameters and find the passwords?
– Connect to Cat tool to these devices n check network parameters. Trying to read the setting but the reading takes a few hours. Are there any solutions ?
– I assume some delays in the network..try connecting them one-to-one if possible.
– Try to reboot the relay
– what could be the problem if Generator Shuts Down on High or Over Frequency, Over Frequency Runaway
– If you are connected to the grid

Burn the rotor due to induced currents.
If you are in islanders mode:

damage the connected equipment

– is it ok to run a generator that varies 59.9-60.1 frequency?
– Trying to read ABB RET 670, but the messages show up like this
– Any insights into this problem
– Does anyone knows how to add delay time in VT Fail ABB RED 670
– Not very sure but….Inconsistent state means the current values in PCM are not reflecting the ied values. If a reader does not resolve this try to see if there is a new version of PCM.
– 132kV transformer HV breaker was closed on NO load and the LV breaker was open, but suddenly differential relay operates and gives a differential trip. In the fault study, the HV side current was 860 Amp. Somebody tell me that what could be the reason?
– For how much time the transformer was on no load? 132/11.5kV?
-Approximately 10 to 15 minutes
– MVA?
-132/22 kV (wind power plant)
– There must b some issue,
– So this is not inrush
– Do TTR and winding resistance,
– If it is the newly commissioned plant then the issue will be in the relay setting otherwise check transformer winding…do the IR…
– I did an excitation test @ 10 kV and the results were OK.
– Plant is in operation for the last 4 years. You will have to do TTR and winding resistance to diagnose the matter, Hope you will get the problem by doing these tests,

– Any mechanical protection PRD, BUCH has operated. Did u retrieve the fault records from the relay?
– TTR?
– turns ratio test
– No any trip from mechanical protection.
– In fault record HV current was 860Amp and LV current was 0 amp.
– Check the CT ratio adopted in the differential relay and what was the differential current setting adopted and actual current during relay operated?
– Transformer turns ratio

– In 3 phase
– Did you check the lighting arrester AT 132 KV SIDE?
– Yes surge arrestor can also be damaged or weakened, as you are using Yard CT for Differential protection
– do also check your HV arrestors

– Can anyone help me with the PACiS configurator?
– Physically that was OK, for counter I will check
– Do hipot test of arrestors, might be differential tripped because of arrestors, If u have a secondary injection kit like Omron or Freja plz do the secondary injection to know that there is no problem from the relay side.
– can I ask why my plc doesn’t read flow?
– Check that analog signal is reaching from your flow meter to plc?
– Check 4 to 20 amp signal

– Hello guys, does anyone know how to avoid distance trips when VT Fail occurred on 3 phases in REL 670?
– Anyone has any material for Artificial intelligence application in Protection?

– Pls help me how to install PCM 2.10
– Strongly recommend installing on virtual machines
-After 3~4 different versions, they always conflict and give errors.
– I run different virtual machines on the ESXi hypervisor.

– I need help to analyze this Disturbance Fault Record whether it is due to Lighting or Flash.
– It was fault on Line Diff and Reclose on Phase R.
– Anyone Plz tell me, what is relay coordination and what its functions?
– Line auto-reclosed successfully?

– We have 50/1 5p15 CT installed on a 33 kv feeder whose fault current initially was very less but now the Power supplier has installed a 50MVA transformer with 11% impedance
29etap08:55 – abb pcm600: And fault current is almost 8000Amps, I believe I need to upgrade protection CT in order to meet high fault current
– Can anyone suggest What’s the 33kv fault level?
– Now it is 8000 amps. Fault current level 50 MVA transformer installed at state electricity board substation and we are consumers with 33 kv feeder voltage
– 50MVA 220/33 KV star/ star connected transformer 11% impedance
– Is the ct used only for over current and earth fault?
– Yes 50,51, 50G, 51G
– Strictly speaking, I would put 200/1 5P40 2.5 VA. However, if the relays have CT saturation detection, you could go lower.
– What’s the relay being used?
– P127
– Do you have the CT test results. In particular the DC resistance of the CT.
-Can you give your consideration or calculations for this selection
– So you need an accuracy limit factor of 40, with a low burden.

– you won’t need much burden as the relay is numerical and installed inside the switchgear
-Your existing 50/1, 15 VA may actually work if you knew the DC resistance.
– Do I have to check with the CT testing kit??
– I believe CT supplier should I have this information
– Yeah if you have test equipment (Omicron CR analyzer or similar) that should be easily possible
– That’s possible, however normally the manufacturer will not specify the DC resistance for 5P/10P class acts. No harm in asking them though
– CT’s Analyser
– Ok I will check with him today, as I don’t have an omicron kit available nearby That the only option I have

– How you coordinate DC resistance with fault current?
-So if Rct<= 1.75 ohm, you can use it For a 50/1 A ct this may be achievable.
need to Replace 33 kv side CT with, 1000/1A, 5P10,15 VA With this approach, I’d reckoned to check the pickup values.

– Ynynd1 And tertiary (delta winding) is unloaded??
– Then no issue transformer will follow system phase sequence,

– What is the difference between IN-HV Deriv Angle and IN-HV Measd Angle on monitoring online?
– Derived means the neutral current has been calculated by summation of IA, IB, and IC whereas measured means neutral wire of ct secondary is connected to the neutral element of the relay, and it is actually being measured,
– What is a dead zone in protection??
– Dead zone is the Zone between CT & Open CB. It’s the point not seen in the zone of protection that of a relay. If a fault occurs at this point, the relay will not issue a trip. Usually between CT and breaker
– IN HV deriv is neutral vector calculation, meanwhile In HV measd is a neutral REF winding
– We cannot say it is neutral ref winding until we see the setting of the relay,
– setting of the wiring diagram right. The setting of the relay and schematic drawing depicting the connection of the ct secondary wires with the differential relay.

To join our WhatsApp groups, plz text our support team on WhatsApp: +989129613659

To join our protection relay WhatsApp group, please send interest on WhatsApp +989129613659

Electrical engineers can find us on WhatsApp, Likundon, Instagram, site, and email.
To follow, and use the contents and easily talk to engineers around the world, plz text on
Whatsapp: +989129613659





protectien relay

– How to calculate capacitor in mfd?
– Step by step distance quadrilateral characteristic for all zones how to draw. please give me any documents sir
– Please suggest Which one is better for bus voltage measurement Induction VT or Capacitive VT?
– Would selecting any of these two make any difference, especially in bus voltage measurements? I don’t think so.
– Capacitive surpass Power Line Carrier (PLC) otherwise they mau consider the cost on their design.
– Cost it seems IVT is more at higher voltages.

– Can anyone share how to use sverker for relay testing
– Can anybody share digsi training material pl…14etap training, 12:11 – digsi 5: Mail sent …material and configuration
-Would you please recommend a book or reference for testing protection relays?

-Hi anyone has any training materials for IEC 61850 configuration and testing. Please share. Thanks in advance.
-I used this training pack, very informative and helpful 👌
-Does it got configuration in IED scout?

– Anyone has a manual of ABB aux relay model RXPSU14n

-everyone plz anyone tell me what are these feeders? 1. 11kv Substation loop feeder with fiber optic cable. 2. 11kv Substation loop feeder with pilot wire (send end supervision relay time). 3.11kv Substaion loop feeder with ( receive end supervision relay type)

-Please tell me which terminals are to be used for Carrier Send & Carrier Receive?

-this for scheme logic distance protection?
– Yes
– From highlighted portion, u can understand
– Sir, 1&2 for Carrier send and 5&6 for Carrier receive?

– Can anyone tell me details of these terminals, it’s an ABB make ACB, SACE PR 121/p ( SACE Emax E2), Open coil, closing coil, motor supply, then Indication ckt, Contactors ckt,

– Can anyone please name a few line auto reclosure 11kv and 11kv and 33kV fault passage indicator manufacturers based in India
– Can anyone give to the solution of board change ABB REF542+ relay
– Which type of communication cable require for ABB to make REF542plus?
– What could be the issue that the Ready LED is not glowing?
– Ready LED of D400 is not glowing..and our SLDC ppl are not getting data of the entire substation.
– Please suggest how to rectify the problem.
– If anybody has a 220KV substation all equipment SOP for operation & Maintenance. Please share

If interested in ETAP discussion Whatsapp group, send ETAP to me on Whatsapp: +989129613659
Topics, ETAP software, Relay coordination, power system, industrial design

– Have anyone idea about the overcurrent coordination between generator and generator transformer
– pls tell me how to decide Bus coupler CT ratio in the 220 kV Double bus bar system?
– Need IEC 60623
– Pls share if any member has it
– What is the busbar current rating, quad moose
– Can anyone reshare the pdf for electrical notes
– Anyone who knows Ziv relays plz contact me
– U want Ziv relay person no?

Our other groups :

. PSCAD group
. Substation automation. Please
. SAS WhatsApp group
. ETAP WhatsApp group
. SAS WhatsApp group
. Substation Automation & SIPROTEC & DIGSI Whatsapp group

text on Whatsapp: +989129613659

– please anyone has SEL 487v technical Manuel for negative sequence
-Hi, anyone knows ZIV SCADA??
– Can anyone send me the Complete Design calculation PCC/MCC with 11KV / 0.415 V Substation.
– Can anyone share electrical notes latest version
– Substation Automation & SIPROTEC & DIGSI Whatsapp group, please
– Hello guys I should to cables tray, 90 degrees, 60 degrees, 45 degrees, and upsets and down set formula please help me
– our generator after start display come like this why my friend’s please give solution
– I have Relay GE 369
The password is forgotten How do I open it ??? How do I delete the old one and make a new password and delete the old one ???
– Password reset is done in GE Canada only
– STK-20200819-WA0001.webp (file attached)
-STK-20200819-WA0002.webp (file attached)
– Can anyone give me information on how much the Clearance for 132/33/11 kV windings and the tank for 63 or 90 MVA according to IEC? Our Company design? And if possible the description of how the oil insulation process works according to this distance?
– Mean insulation between HV winding and tank
– anyone please share the HVDC station Single Line Diagram.
– Can any one of the engineers having p632 transformer differential protection calculations.
I had calculations for p633
– P633 is for 3 winding transformer differential protection and P632 is for 2 winding ones?
-I had dealt with 642 and 643
– Relays in transformer differential
– No idea on 63..series
– We are using P643 as 3-winding Transformer differential protection. And P-633 as Overall differential protection comprising Generator, Generator Transformer, and Auxiliary transformer

Does anyone have a document SLD for the bay Reactor? Please share with me..thanks
– If anyone has a REM615 backup file please share.
-Plz share anyone Modbus function codes

-Astrum…..anyone has software for this converter
– Type rs232 to USB converter drivers. Micom(Areva) P121 software version is 6.H relay don’t connect with relay
– Using Micom s1 studio and Micom s1agile
– I downloaded all data model still same error present
– Change the USB port of your laptop and try again
– Go to device manager on the laptop
– Check driver settings
– Assign as per p121 communication parameters
– Is your OS Windows 10? Then it will be working without a driver. To check whether it is working go to Device manager and see the listed Com ports.
-I downloaded the software now it’s working
– No 10
– Please share this relay terminals details.. 12 and 34 are NO/NC contacts
– 9 & 10 are current coil
– 1,2
– After coil operation…what the status of NO contac
– 3&4 would normally be used for trip wiring as it has a trip isolator switch in series.. see the red tab on the grab handle of the relay.
– This particular model is a self-powered type. So terminals 5,6,7,8 are not used. Power is derived from CT terminals 9&10.

– Can anyone give settings for this transformer….. relay is. Areva P633
– All that you need from this nameplate are
1. Trxm rating 20000kVA

  1. Voltage levels 66/11kV
  2. Vector group YNyno
  3. CT ratio if you are using the bushing CT?
    – no I want relay settings for Areva p633

    -Anyone has manuals for this temperature switch for the transformer
    – Please share any procedure to communicate with CSC 326 relay using CSPC software
    – Can anyone share a drive selection guide: I want to convert one dc motor drive to VVF drive
    – Please share the Secure Premium 100-meter manual.
    – sir, Premier 100, please.
    – sorry, I don’t have premier 100 series manual
    – I need Secure Prodigy meter manual. Can anyone share, please?
    – What is the standard followed for 132 kV cable ampacity calculation?. ( Installation method above ground).

– Anyone please share the Operating time formula for Normal. Inverse 1.3 seconds curve.
– this is for the Normal Inverse 3 seconds curve I think
– In the case of 1.3 inverse curve instead of 0.1414 take-ups 0.0613 value should be used.
– Does the Overcurrent Highset setting for the feeder depends on the Transformer capacity in the substation?
– Suppose bus fault current 12 KA, and no of connected 3, den 4ka per tr, 400O o/ c high set. Instantaneous
– You are very correct in order to preserve the transformer life span
– we have 132/33 kV and 220/33 kV substations with 33 kV Feeders…one of my friends told me Overcurrent Highset depends on Transformer capacity.
– how to decide on the highest pls tell me?
– The sum of all the feeder’s load must be equal to your transformer LV capacity. it depends on the load on each feeder. See bus fault current first u HV 2 calculate For both the cases then divided it by no. Of tr.
– Make it ur hv o/c high set
– Tr mva/ tr percentage impedance. Highest fault mva for ur transformer
– We also face difficulty with the password of this relay. YouTube videos did not help.

How can we reduce the tripping of the transformer due to insrush current?
– Transformer 10MVA,66/11KV
HV side CT ratio 125/1A
LV side CT ratio 800/1 A
Relay Micom P642
– Settings of harmonic
– If I’m not wrong, in modern transformer because of core material, the Inrush current harmonics are sometimes less than 20% of fundamental frequency component due to which differential relay operates. So, we can keep the setting at 15%. For second harmonics we can keep this at 15%

– anyone knows passwords to change settings?
– 000000

– please tell me what is the general delay time used for Overcurrent or Earth Fault Highset protection?
-Depend on your coordination
– Zero
– 100msec
– To allow line zone 1 to clear fault first

Join 20 WhatsApp groups for protection engineers

  • WhatsApp Grp 01: Protection Relay – General
  • WhatsApp Grp 02: Substation Automation – General
  • WhatsApp Grp 03: Transmission line protection
  • WhatsApp Grp 04: Transformer protection
  • WhatsApp Grp 05: Motor protection
  • WhatsApp Grp 06: Generator protection
  • WhatsApp Grp 07: Overcurrent and Earth Fault Protection
  • WhatsApp Grp 08: Busbar protection and Bay controller
  • WhatsApp Grp 09: Breaker protection and control
  • WhatsApp Grp 10: Protection Relay Testing and commissioning
  • WhatsApp Grp 11: DIgSILENT
  • WhatsApp Grp 12: ETAP
  • WhatsApp Grp 13: PSCAD
  • WhatsApp Grp 14: IEC 61850 configuration
  • WhatsApp Grp 15: Switchgear GIS & AIS
  • WhatsApp Grp 16: GE Relay Configuration
  • WhatsApp Grp 17: SIEMENS Relay configuration
  • WhatsApp Grp 18: Schnider Relay configuration
  • WhatsApp Grp 19: SEL Relay Configuration
  • WhatsApp Grp 20: ABB Relion configuration or more services, send a message to our WhatsApp support number+989129613659

– hi, anyone has a ZIV RELAY course about programming its logical control, and interlocks? I need to understanding completely but is not possible only to use the manual brand, located on their website.

-Anyone faced this problem while adding a relay to the IEC station in sip5?
– If anyone having sepam relay thermal calculation sheet please share it with me.
– if CT gets saturated .what is the solution after CT gets saturated. We want to replace CT or any other solution
– CT secondary current flow to the secondary winding
– How are confirming that CT got saturated?
– Sir for knowledge purpose if CT gets saturated in future
– If in the future we observe these types of the problem how can we overcome these types of problems.
– Which purpose bypass resistor used in Modbus communication ??
– What is the burden of your CTs?
– Saturation is purely a magnetic property issue. So there is no alternative solution to do corrections in the circuit rather than core replacement.
– You need not replace your CT there are ways to demagnetize the ct
– Can you explain in detail the theory of core saturation in ct
– How can we demagnetize the CT? We had followed demagnetization in transformer ..whenever we got erroneous values while testing dc winding resistance
– The easiest way to demagnetize a CT is to apply the test current at a level that approaches its excitation ‘knee’, then slowly decrease the input current to zero. This can be done with secondary excitation or primary current injection.
– I think some tester offer this option, Like omricon ct analyzer
– Can you explain why you need to replace your ct?
– What is the solution to these types of problem
– Anyone having a method Statement for how to create logic for Sepam Relay using SFT2841

our ETAP Video training course:

– we are getting the above error when communicating with RET650…Please tell us what could be the problem?
– Rollback package software needs to be updated using the Update manager of PCM600
– I could not find the Rollback package software. It’s in update manager, select relevant relay IED connectivity package. In that package, there is one rollup package that’s automatically installed.

– 33 kV ABB circuit breaker Trip coil and close coil have a PCB connected to them. Pls, tell me what is the use of that PCB?
– I think PCB meant for capacitive tripping device CTD. CTD separate unit is present sir
– black color portion in the above image
– Check the drawing, While Exporting, Icd from Abb relay -PCM 600 the icd file in Browser, showing TEMPLATE
– In scheme drawing of PCB…the electronic ckt PCB meant for coil protection purpose / to safeguard coil.
As the coil is designed for a short time not for continuous.
– what kind of protection is used, sir?
– what are the steps to be followed when synchronizing a new 220 kV Transmission Line to an existing 220 kV Bus?
– Anyone has a WINCC script for the addition of tags and displays on the HMI screen.
– This is a 220 kV ABB make LTB245E1 type circuit breaker. Please tell what is the use of S7-A circled in the above figure
– Did you lookup S7 in legends?
– I think you could find working philosophy in the breaker manual
– It is mentioned Blocking switch but the function of it is not mentioned anywhere?
– For emf voltage discharge
– They are opposite
– I think they are for an anti pumping system, isn’t it ??
– Anti-pumping will come only in the Closing path. This is an AC motor (Spring charge) circuit I think.
– Spring charge also needs to cut off, so I thought Motor Cut off will be via Q1 contacts in series. S7 contact is, like AN said, for discharging stored EM energy in the motor winding.

– Anyone knows how to download cid file from sepam relays and how to do goose configuration?
– Hello guys, please how do I program the LED of ABB REF615. My main challenge is to change the parameter setting from false to true.

– Hello colleagues, I have a question, in case there is a fault on the 33kv or 11 kV side is there any impact on 132kv side protection equipment? Mean did the protection will sense the fault?
– overcurrent relays on 33kv from TP, maybe send a trigger From application configuration
– Yes 132 side will sense the downstream faults but it will work as backup protection for downstream protection

– How to calculate phase sequence angle in cable
– Anyone pls explain how to set the power calculation for the reverse power relay…
-How to calculate the size of earthing cable for DCS or PLC?
-Please reply to this expert windows +R
2. type services. msc and enter
3.right-click on SQL server (PCMSERVER) AND THEN START
– when I start services
– Reinstall the SQL server 2014
– Please can anyone help me with the primary impedance R1 + jx1/ km and R0 +jx0/km value of a Bear conductor ASCAR 250mm² with a diameter of 23.45mm
– Hello guys! Anyone working with GE Multilin D30? I have a relay that seems to be unconfigured on distance. Backup OC and EF are enabled but seems no contact is assigned for tripping though it shows indication during testing. 50/51, 50N/51N

– Power Swing Block is used and activated in Distance Relay to block its operation in case of Swing period disturbance
– It’s not about definition. I want ABC concerning enervista.
– Emanuel starts reading the D30 manual.
– What should be OLTC AVR relay PT Lower and raise voltage settings.

– Secure Premium 300 energy meter is showing like this in the parameters..please tell me what is its meaning?
– CT low means very fewer amps detected by ct
– What is the meaning of VT polarity?
-VT polarity mean instant of increasing live terminal to positive is the same instant of increasing live terminal in secondary to positive in this case polarity is good and this secondary terminal is x1 and x2 is grounded. But if vice versa x2 become life and x1 is grounded For VT polarity Test the same ways of CT polarity Test
– Is it effect relay operation
– Of course, if this relay is Directional or Distance or Reverse power Relays and also if powering measuring device as kwh meter

By joining our WhatsApp and Telegram groups, Discuss with international electrical engineers and solve your problems about electricity. You can also take benefit of our free files and see our training packages at the link below:
For more services, send a message to our WhatsApp support number:

– What we have to check if the transformer tripped in?
– DGA, Insulation, Ratio, Magnetic balance and Winding Resistance
– Hi guys, do you know where I could find a bibliography for protection for photovolics systems connected on the grid? I need to know a siemens V4 relay can work as a time source for micom relays
– Magnetising current, Short circuit impedance test of the transformer are also important to check for any deformation of windings. Turns ratio test and DC resistance test of winding.
– SFRA test is also one of the diagnostic tests but it’s not done in most the companies
– Do you mean the bandwidth (this determine when the tap to shift up/down)?
-, Yes

– Please tell the ‘distance’ below which ‘Line Differential Relay’ should be used for protection of 220 kV or 132 kV Transmission line?
– Line differential use mostly for underground cable not over a headline for e.g RED670 Abb line differential and for OHL REL670 will be used
-In addition, RED670 have the ability to protect distance too
– sir, why is it that Differential is used for cable and not a line?
– Because with differential you are normally using fiber Optic, laying parallel with feeder. It is common to use line differential for underground cable and distance relays for overhead feeders
– Cant we have line diff if we have OPGW with the line?
– As much I know there is no distance length specified for Line differential relays. Line differential protection is also being used in overhead lines especially short lines and for high voltage lines that have redundant protection such as 400 kv
– Yes I think it possible, the line can be used with opgw too, but I never face that actually in our system

-anyone has 2 phase transmission line with ‘line Differential protection’?
Line differential protection is being used for very short lines say less than 1 km. We are using it on 550 metres 220kv line.
-will anyone please the type of curve used by Indian railways for Overcurrent protection of the traction feeders?
– Very inverse characteristics
– why is it used and not Normal Inverse or Extremely Inverse?
– Main protection is overcurrent protection for railways..they adopt very inverse in the downstream for relay coordination, we use the same curve

– Anyone knows how to configure goose signal at abb PCM software.pls share documents if u have
– How to check I/O Status in sepam80 relay
– In HMI, Or Software
– I have used this once before, now I am not getting it
– Once Relay is Connected with ur Lap, There is Spanner Symbol Available in Icons, Open it, Directly it will go to I/O Monitoring In HMI, Press Main Menu, U ll Get IO page Directly, Press Enter then Side Arrow for Next page
– Does the main menu mean this one?
– Press 13, then Options will come as I
– If I am using this protection output in logipam, then where I want to enable it and give settings
-For 50/51N_1_3, I enabled unit 1. Then where I have to give set. In group A 3 or 1
– Anyone please share the Power Swing testing file for Omicron CMC356?
– Anyone has EMCO AVR relay service engineer contact no in india
– How to calculate transmission line loss from line length
– i^2 * (unit R/km*line length) will give for one phs

– Dears how to activate the help file “about” in digsi4 software
– Anybody has a manual for ETL 41 ABB PLCC equipment?
Kindly share.
– In EMCO AVR relay at the parallel of PT supply component used which is burnt is capacitor or resistor
– To test directional earth fault relay, voltage I’m giving is healthy and how much current to give and its the angle In earth, fault make voltage less in one phase
– Your test will fail because you inject a healthy phases voltage, that’s mean there is no zero-sequence voltage needed to operate the relay. You should simulate a real fault, if an earth fault happens to phase A the voltage of this phase will drop to a low value

– I’m trying to press the about button but the help doesn’t open the specific tab explain ‘ although I reinstall the device drivers
– Install the Device driver with help from the siemens site
– Already installed but it appears as a total manual in pdf, not an individual parameter
– Anyone has logic for soft on manual close command in p444 micom

Anybody having Precommissioning and Commission procedure or MOS for Substation Upgrade projects

– What is the Siprotec 5 Relay Password??
– 6 times 0
– Tried, not Working
– 222222

To join our protection relay WhatsApp group, please send interest on Whatsapp +989129613659

-I am facing a problem with SFT2841 authorization code/registration.

-Register with ur mail ID, code link will come
– U can give any mail ID, and number. It will get registered.
– I got it registered. But still can not log into the sepam, any ideas
– Do you use a USB to serial adapter or you have built-in serial port?
– What’s the relay model
– Is this cable fit for Front port communication?
– Yup

– Hello everyone I had a problem with siemens siprotec 7vk61 relay it is not measuring injected current and the relay is not showing measurements could anyone please help me out with this
– Relay showing measurements in

is there any Error led?
– No led
-Try to initialize the

To join our protection relay WhatsApp group, please send interest on Whatsapp +989129613659

– MLFB file with the same version, Then configure as per your system Then check
– For what purpose this relay used?
– Breaker Management
– Eg, like TIE bays
-Auto reclose
– AR for tie.. and alll
– Inside software you checked the measurements?
– It is showing “———” this on measurements
– Error in IED
– Yes also it is not showing in digsi software
– Check the Control options in Relay

-Anyone having Areva P521 pilot wire Relay Technical Manual .

Need Areva, not Schneider.
– How to find the slope for low impedance REF in sepam T81
– Please tell me What value of Contact Resistance is acceptable for 33 /132/220/400 kV Circuit breakers?
– ABB de 30 a 40 micro ohm
– The contact resistance value depends on the current of the circuit and not on the voltage.
– You should evaluate the manufacturer’s tests also evaluate the dissipated power in the resistance found. Then compare with the short circuit power of the circuit breaker
– If I install the 7sr100 RK all template then I got the 7sr100 r4h-1a. it’s crt?
U install Rk range

– H series will come In minimum all template
– the 7vk61 is not showing measurements do anyone have a solution for it
– Anyone with guide notes for using sverker 780 relay tester On vamp relay?
– What is this infuse failure relay?
– Looks like selenium rectifier 3 phase. Also called a metal rectifier

can anyone help me with how to test overexcitation on the generator by CMC? V/f =1.2

-Voltage KV rating how much?
– 11kV
– There are two methods to check, one is increasing voltage and second decreasing frequency method.

1Keep frequency constant and raise the voltage.

2 Keep voltage constant and decrease frequency. In both cases, plz continues to monitor the v/f meter on display.

– Do anyone has a solution for this relay it is not showing measurements
– Kindly check the logs once. I was assuming that there is a configuration issue. Because device healthy condition.
Apart from that, this is a sync relay so there is no ct connection and this window is for current measurement.
– Sorry not Sync it is auto recolse relay
– Trigger the check syn Input, Manual, or Give all measurements properly.
– What is the best method to find zero sequence impedance of line?
– U have to take it from the conductor manufacturer he provides you with R0 and X0 and you can calculate.
– Ct are connected

– How can I synchronize the relay time and date with the laptop time and date in siprotec 5 Siemens relays
– How to check this curve 2 in sepam m87 relay?

– anyone has ideas for loss off comm on SIEMENS 7SR1811.
– we checked the fiber comm is ok but the commlink still failed.
– How you checked fiber communication?
– by applying laser light end to end.

– when we read this error coming to any solution to read. ABB Rec670
– Kindly provide auto reclose logic for ABB bcu. For one and a half scheme 400kv.
– There are two SEL relays for the same line prot. have different order numbers while one comm. the channel used for direct fiber and one used with media converter. Still found a comm. Fail can you help
– can I use PCM 600 for version 2.8 in the relay?
– Yes. But must have the connectivity package of the relay you are communicating.

To join our protection relay WhatsApp group, please send interest on Whatsapp+989129613659

– Does anyone know how to communicate Double F6150e with the F6300?
– Use the network for communication using pc.

– Can I change power disconnectors or isolator’s control in substations from working by classic control to work by PLC ( programmable logic controller)?
– Same generators on parallel connection but one either not taking load or shedding of load at 50%. What can be the coz?

– Anyone knows cable testing IEC formula both ac and dc?
– We have a 7SJ62 Siemens relay protection. In the event log, the time and date have a question mark (?). The source protocol of our device is Ethernet NTP. Why we have a question mark on the time and date of the event?
– Your device time is not Sync with GPS Clock

– Pls guide anyone on how to check the spring charge motor trip test using the B10E megger kit
– I need advice on protection on a 132kV transmission line to connect to a solar PV plant producing 92MW.
– This is the first generating plant like this proposed in the country.

– Does anyone know how to make logic equations in Areva P921?
– Exact solution for this?

– This problem is coming in Digsi while communicating via USB.
– In the taskbar, there is comtask32 close that first then close digsi and restart with run as administrator or restart the laptop
– Apart from this?
– Means I don’t know
– This happens whenever you disconnect the device in online mode. If this is happening only one or two times while communicating device then you have to follow the same procedure as mentioned.
– However, if the same thing happens after doing this then you have to repair your digsi.
– Digsi repair also tried the Same problem arising, Random at some periods Some Times.

– devices connected? After repairing
– Different devices only, Then try to connect in another project don’t connect on the same file,
– I’m, using Digsi for a while.

– Randomly I have got this error, Once this error came almost all times same error repeat while communicating, Still, i could get the Proper solution for this, and also cause for this error, I have searched In digsi manual
But nothing mentioned regarding Comtask32. All the minor checks – All seems okay
– Problem in siprotic 4. I’m using software 4.93
– then you have to reinstall your windows as well digsi.
– I’ve faced this issue in different laptops / different os too.

– How could we check trip log and event log in IED Scout in siemens Siprotech Relays
– What is the type of this FO port, please?
– LC/SC/ST like this?
– LC
– these two please?
– LC
– SC
– The above relay has FO LC type rear ethernet port and its protocol is IEC60870-5-103. Will it support time synchronization with SANDS make GPS ?
– Abb rec670 relay restarting again after double point status included. Does anyone know how to solve this restarting issue please send me a message
– This change is in the 61850?
– No just changed binary input status
– What will be the default password for GE L90?
– It is showing local access denied while changing settings from HMI. I am getting this error when I send application configuration to the relay REF 615
– I can able to read but not able to write what will be the reason!? please anyone who knows how to solve this issue message me.
– Can someone help me to configure this relay ABB REF 541?
– Breaker feeding primary of 6.6/.415 kv transformer is tripping on earth fault during inrush
– 6.6kv is grounded through 50 Amps NGR
– 51n is set at 10 amps idmt at 200 Msec
– 50n is set at 20amps dt at 50 msec

– Please guide for the 68 settings in ABB ref 615 relay
-It’s tripping on Earth fault Highest function?
– Earth fault’s highest setting may be less. We keep it as 8-10 times of idmt setting. For example, if CT is 600/1A, then earth fault highest function is kept at 2A (10 times of 0.2A)
– anyone having a thermal overload calculation sheet for the transformer kindly shares
– Transformer testing

– Please tell me What is the use of the rings in the above Voltage Transformer?
– Any sip5 engineer who knows to change the phase current name for DR?
– Hi everyone I am facing this problem for ABB615. Whenever I gave the read from IED that time showing this error.. – — How can I solve those errors and read relay files from the relay?

-Anyone pls send me the ABB REF615 Relay version 5.0.13 relay connectivity package
– Use and update manager or go to their website
– The updated manager has no option for searching
– Kindly update the license by right click on the relay and use the license updation tool.
– Please, can anyone help. CB always trips back after single-phase Auto reclose. The PD is the 60s
– Kindly make it clear?
– After the relay give AR command to the CB it will close and trip back immediately and after that, the CB will trip other phases on PD. I’m doing commissioning the line, not charge
– Here showing option 5.0.1. But I need 5.0.13. how can I download the package
– Did you check for any trip signal presented to the single-pole trip relays?
– Yes. The feedback is on the relay to test set.
– Breaker should be in a close position for AR
– In the open condition, AR should block
– It was in a close position and I trip the CB with the relay on 21Z1 Ph-G fault. Then CB open and the relay send a reclose command

– Did you check the outputs which are getting high on single-phase trip?
– I have checked it very well because the test kit shows the duration of the trip. About 0.038s
– No other outputs are getting high?
– Yes
– Disable TOR function and then check
– TOR?
– Trip on reclose function which is there in every numerical relay
– Disable this function and then check the auto reclose
– Correct CB state must be provided for the AR relay/21 for AR to work. As I understand AR will work if the CB is open, not when it is closed, along with other interlock conditions.
– The problem is that the CB is reclosing and trip back immediately, Which means some trip signal is tripping it. it’s not the ar logic which is at fault.
– You need to remove the particular phase’s trip input to the single-phase trip relay and then try a reclosing function test.
– If it works, you are going to find out which relay keeps issuing the trip positive to the 1 phase trip relay.
– If you reclose the CB from the AR function of the relay, the CB close and remains. If there is an output that is high it should not stay
– That’s the logic.
– The problem happens only when I trip the CB from Close to open and back to close?
– You can check also a timer on CB for pole discrepancy.. sometimes you need to delay more for reclosing test.
– That s a basic check. make sure that the dead time is not more than the reclaim time & PD time. Even though as per your description it’s not what trips the CB on reclosing.
– Adjust timer on CB after that reclose successfully signal to come.
– If it’s a new CB, after conducting the CB closing timing test, set the deadtime above the closing time of CB too.
– it’s a new CB
– Normally, the closing time is 100msec and the dead time is set as 1sec. Remove other 2 phases trip relays and then apply single-phase fault with one trip relay. Check if AR works
– Keep one trip relay in circuit with other trip relays drawn out
– Suppose you apply Red phase fault, keep the red phase trip relay in the circuit
– If others are there definitely it will trip the CB on 3Ph
– That’s what we are doing
– you apply Red phase to the earth fault using the testing kit and keep Red phase trip relay in the circuit
– Have you checked that Breaker is closing on Single phase fault AR and then tripping? If others are active the relay will show TrpA, TrpB, and TrpC
– it’s closing on ar, but again tripping on single-phase trip relay, And later due to PD timer, remaining phases trip too
– You said that it’s again tripping on the Trip relay. Check the Auxiliary contact 52A of the circuit breaker which is in series with the trip coil. This contact can malfunction. This contact is meant to break the DC circuit of the Trip relay
– If the trip relay remains in the energized state it can again trip the breaker

Join 20 WhatsApp groups for protection engineers

20 WhatsApp Groups for protection engineers

  • WhatsApp Grp 01: Protection Relay – General
  • WhatsApp Grp 02: Substation Automation – General
  • WhatsApp Grp 03: Transmission line protection
  • WhatsApp Grp 04: Transformer protection
  • WhatsApp Grp 05: Motor protection
  • WhatsApp Grp 06: Generator protection
  • WhatsApp Grp 07: Overcurrent and Earth Fault Protection
  • WhatsApp Grp 08: Busbar protection and Bay controller
  • WhatsApp Grp 09: Breaker protection and control
  • WhatsApp Grp 10: Protection Relay Testing and commissioning
  • WhatsApp Grp 11: DIgSILENT
  • WhatsApp Grp 12: ETAP
  • WhatsApp Grp 13: PSCAD
  • WhatsApp Grp 14: IEC 61850 configuration
  • WhatsApp Grp 15: Switchgear GIS & AIS
  • WhatsApp Grp 16: GE Relay Configuration
  • WhatsApp Grp 17: SIEMENS Relay configuration
  • WhatsApp Grp 18: Schnider Relay configuration
  • WhatsApp Grp 19: SEL Relay Configuration
  • WhatsApp Grp 20: ABB Relion configuration or more services, send a message to our WhatsApp support number: +989129613659

– Electric duct heater 240 volts, 3500 w what are meggar valves
– This would not lead to a successful Autorecloser.
– If the CB aux switch s faulty and a trip signal persists, the TC will get burned out.
– Yes, the trip coil can burn
– But I don’t find any other reason. I think they need to check trip coil resistance too,
– As the coil has not burned, it’s not the CB aux switch that s causing the issue.
– Can we extract fault waveform, I mean one more thing needs to be checked: the testing kit needs to stop injecting fault after the first trip, is it being ensured.
– Correct! And if the kit feedback point of the trip is correct.
– Yes I confirmed it. It shows 0.038s
– If you remove feedback the test kit continues
– Check the Programming logic of the relay, maybe Autoreclose digital output signal may have been connected to the trip output contact of Relay
– Check the PSL or configuration of the Distance relay. I have only a three-phase supply without neutral, in my system newly 1 phase loads are being added. how can I provide neutral wire to these loads, without implementing any Trafo (Delta-Wye)?

– Hi guys. How Can I reset these ledes?
-Reset, then reset indication LEDs, Check the BB switch if it’s on or off.
– I did it but it doesn’t work.
– Where can I find BB switch?
– On the same panel
– This is the sepam Relay s configuration,

– Why we are using () In not gate function. is it mandatory to use the set brackets?
– Not Required
– If u Want to Invert an Input, U Can use NOT directly. So set brackets Were not important, right?

– What is the meaning of this error code, please? p343
– This error code means that analog input module serial E2ROM Failure.
– We advise replacing analog input module through authorized repair center.

– Anyone knows how to trigger DR in sip 4 either online or manually?
– Open relay online and go to test then double click on test waveform, DR will be triggered.

– HMI in LabView with IEC 61850 (MMS) Communication
-It’s just a simulation or HILT ( LOOP IN TESTING)?
– First I configure the SEL 751 in QuickSet software, then I use the SEL Architect software for IEC 61850 configuration, in the end, I use the RELAB OPC SERVER software to read the reports I created and the software transforms them into OPC signals and the LabView can read that data in real-time. You can also use Kepserverx to transform MMS or GOOSE data to OPC
– Value under switch on condition means in case of differential

– I have good knowledge of digsi4 but no knowledge of digsi5 software. Anyone have any guidelines to access digsi5. I need to see how the signal is configured for SAS OR GOOSING.
– Actually in 5 no need to assign any signal for IEC all are pre-configured
– In the file, there is the option of IEC structure …on that, you can see

– Anybody Simulated signals from IED SCOUT???
– This block “MVGAPC1” used for SAS in the REF615, but I don’t need it to appear on the events

– can anybody tell me the difference between short-term overcurrent trips and long-term overcurrent trips?
-What is the password of SEL 551?
– Sometimes the password for ftp might be FTPUSER too. If you have quickset settings, you will get the information in it

To join our protection relay WhatsApp group, please send interest on WhatsApp +989129613659

-Does anyone face time inaccuracy in OMICRON CMC256 only if trip time < 1-second?

-What are you testing?
-Phase Overcurrent.

– What are you using? Quick CMC, state sequence, or auto?

– We use a 125V DC system for our substations. The string consists of 93 NiCad cells. The charger is SENS. The only settings available on the charger are FLOAT, set at 1.37VpC 122V, and EQUALIZE, set at 1.57Vpc 138V. These values appear to be assuming the string consists of 88 cells.

– Should I just adjust the FLOAT to 130V?
-I don’t see any way to set the number of cells in the string.
-How separate furreol in canon mk2600 printer?
-Anyone worked on Micom 546 relay. Line differential relay? I am facing one problem that the tx of differential communication getting on-off frequently in back relay tx is getting
on-off, or in your mux, In HMI of relay
-Value is getting 1 and 0.
-maybe you can check in measurement 4 in display relay, same or not with tx on HMI.
-What is the password of this relay SR-489?

-The factory default passcode is zero (0)

– Also, you can try state sequence.

– just an update Was able to find in the setting where there is the number of cells for the string but was not allowed to change the value which was found to be 93.
-we Will try to contact the manufacturer to address this.

– What’s the difference between WCDM11 type relay and WCD type? Both are reverse power protection relays but can we interchange them?
-how I install Digsi 4 in windows 8 or windows 10?
-Hi the above relay SIEMENS show the error LED and monitor SMS.

– can you help me to solve this issue? Busbar relay 7ss52?

– Actually, it falls back in monitor mode ….go down there will be one option of reset ….do that.

-Yes. Otherwise, nothing will show in time

-hi, could anyone shares PDF standard library “IEC 60255-6 ELECTRICAL RELAYS -PART6:MEASURING RELAYS AND PROTECTION EQUIPMENT”?

-Does anyone have a manual for this relay or how to read the settings for this relay?
– Which relay?
– Micom p444
– Once ..switch off auxiliary suplly And switch on

– I have a question about inrush on the Transmission line:

– Is it inrush current created during energizing of under-ground transmission line? On voltage level of 132kV and 6.5KM
– No, inrush current produces during charging of transformer.
– Anyone have Rio file for field failure and pole slip
What is the default password of this Siemens Relay?

– Anyone has a 3.61 data model for this relay?
– 000000

To join our protection relay WhatsApp group, please send interest on WhatsApp: +989129613659

– Why u need To communicate and see Fault Recorder
– I think It can be used HMI only And Modbus communication ports only available
– Ok. That is also ok. I can use that only as long as I have respective firmware.

– Guys anyone has this book?! Can anyone upload it??
– Transformer Inspection and Testing (Electrical Power Plant Maintenance Book 1) pdf

– Hello anyone works this type of MDB ?
– This is not MDB. look likes the control panel.
– Sir Are you work on this panel ?
– Looks like ifsc and Rtu panel
– Please send link go to download TDMS software for DRTS 64 testing kit

– Hi does anyone have MComp suite software of L&t relays?

To join our protection relay WhatsApp group, please send “interest” on Whatsapp: +989129613659

Hello, thank you for visiting our site.
By joining our WhatsApp and Telegram groups, you can share your problems with electrical engineers and help out each other.

You can also have our free files and see our training packages at the link below:
For more services, send a message to our WhatsApp support number

Thanks for following the rules below to avoid distraction:

🌟Follow the group rules and objectives of the group
🌟This is an international group, just text in English
🌟Actively participate in the group.
🌟Don’t make any personal message to the group members
🌟 Post your message in one single chunk of text, don’t post every word or sentence in a new message.
🌟No changing of group name or group DP
🌟Advertisements, announcement of the event of other groups needs approval from Admin before circulation (+917303437524 ).
🌟If any member is not following the rules, we have the authority to remove him from the group
🌟 No greeting and other personal discussions. No need to say good morning, good night, thanks, etc.

Everyone must respect the group.
🙏Feedback and suggestions are always welcome.

sample discussions:

If there be fault during the charging, only the setting of high set elements HS1 and HS2 were there. If the value of the current sense by the relay is more than the set point, the relay generates the tripping command?

– Sel is using two functions at the same time. Blocking (cross block) plus harmonic restraint. In that case, if both functions are working in parallel, and during energization, the relay detects fault current. Or high current in any phase with little or no harmonics. Harmonic restraints func will issue trip without going towards high set or unrestraint.

– What is the DCRP approval?
– For Ministry approval in Oman

– Y 67 function is always +45 degrees?
– Even I also have seen + 30. So it depends on how earthing system achieved

– In a line has underground cables & OHL line together how they calculate distance setting?
– The total impedance will be ohl+ug
– No, it’s called a hybrid feeder.
Current differential with backup distance protections. distance protection zone 1 should be calculated accordingly from the OHL end.
– i think in this case separate Zone is added till Underground feeder in order to block Auto Reclosure
– but FO can’t be layed along with OHL
– What if the feeder have more pieces of cable combined with OHL, Where exact zone can’t be defined?
– Why VFD aren’t contribute the fault current in to the system?
– FO can be layed alobg with OHL. We have Differential protection in line through FO cable

– My relay version is 5.can I use this
– Your relay is pickup still not operated
– CB compartment sf6 gas low is stage 1 or 2.?
– I think the alarm is stage 1 trip is stage 2
– If possible can you change Remote to local?
– Please check the configuration, if you giving a start for UV1. It will not trip, in Siemens Relay, UV will operate when the minimum current setting is off. Please check in this relay also if the Minimum current requirement is there means to make it Off, Otherwise, check any block is given. For example VT MCB Off status like that.

– from the top near the main display 50 operate led and 51 operate led light blinking with red color, so what is the meaning of this?
-Now transformer operate with this condition ,and only one feeder loaded with 5 amp only .

-So is any problem arise in this type of condition? And also how to reset this one to get the normal operation?
– If the master trip has operated…just reset the master trip relay and charge the breaker.
– In order to rest LEDs just press clear and go through the navigation

-Can I get the default passwords of 7sj82 & 7ut85?
– available in siemens website

-How we calculate tap ratio? Every time shows … While I upload file to new relay .. may I know what’s problem?
– Check the error
– Existing file details are
Configuration version : V07.31
Communication configuration version: V07.54
– Use the same version to extract the file otherelse download offline and then try

– New relay firmware version V 07.54 Can’t connect with a new relay. Not communicate with new relay .. every time failed.
– connect by front port through of 7sj82 relay
– Check if you can see the relay in you online connection. Relay firmware version V07.54 and Existing file firmware version V07.31
May be you have a problem with the usb driver.
– It’s necessary to install the same firmware version in your computer
– The Protocols device driver is installed too?

– Line voltage inject 30 degree lead to phase voltage, Ryb 0 _120 120
– Check voltage across the coil point
– Manual have ?
– Check your schematic drawing

– What is the reason for L1-E,L2-E,L3-E voltage higher than L1-N,L2-N,L3-N?
– May be neutral is at some potential higher that earth potential. It is feeding temporary generator and at generator side neutral was grounded
– May be that grounding is not proper
-Neutral is not properly grounded, therefore proper reading is coming w.r.t earth instead of neutral.

– How can I change 7UT85 Relay input by DIGSI 5?
– How can I change 7sj82 relay output (NO/NC) by software?
– Through CFC only

– how to update the firmware of GE Relay type MIF II.
– I have a problem with the magnetic balance test in the transformer .lv side magnetic balance is ok but hv side not okay?
– Please check proper termination of cables and also check any carbonization at the terminal point

– Then there is any flux leakages inside any core is more as compared to other core where winding done.
– Try demagnetize the core.
– Connect LV supply to LV side and switch ON & OFF several times…say 20
– before magnetic balance which test had you perform
– If vector test or any other test u have performed then this type of error may occur

– If u have done DC winding resistance test then there may be the possibility of demagnetization of core
– How can I do time synchronization through SNTP ON REF615?
– I changed the IP address but the time and date not synchronous.

– ABB REF615 RELAY -SNTP IP ADDRESS: Is it a new CT or old ??
1) As it is primary wounded CT, insulation fails between primary to secondary windings. Because of voids presence in epoxy moldings.
2) when it is loaded condition, secondary circuits may be opened and leads to high voltage on its terminals which leads to insulation fails on the secondary coil and inter turns fault happened.
– This old one.. and in-cabin we found humidity.
– CT circuit is ok. Because I already checked through injections of current.
– Then in this case more moisture contents present in primary winding molding portions which lead to such.
– proceed to partial discharge (PD) tests

– anything can cause a flash inside the switchgear itself? which can be found during maintenance?
– all this can be found during maintenance test/troubleshooting/clearance for normally open Bay.
– broken CT / crack on the body/insulation breaks down.
once flash happened no one can be 100% exactly sure what exactly cause —- the problem inside the SWG parts.
if Arc flash happened to the old switchgear I would inspect and test the other CT inside the substation.

– test CT and visualizy check
– to spare panel / normally open, etc
– CT not affected by any external impact. Failure happens inside the CT itself

– For these results transformer is healthy and if there is a problem what it could be?
– Red phase Resistance
– What is the problem of the red phase.?
– Used new CT’S with new switchgear.
– I think the red phase dead short
– Why is the second phase to phase and phase to neutral is same value?

– I want to know why you see the red phase is defective
– Have you checked the factory test report?
– I didn’t found it
– But due to physical inspection we saw suite on yellow phase
– It seems the yellow phase flashed
– What about IR value?
– But I am so sure that Y I have the result for discussion
– what is IR?
– Insulation resistance
– Primary and secondary are separate coils
Hv – ground = 18Gohm
LV – Ground = 18 M ohm
HV – LV = 42 G ohm
– RY and BR value are equal
– YB mostly 2 times
– So are PHASE only possible to short?
– If so that would also reflect in ratio, vector group, magnetizing current?
– That is the nameplate of that transformer
– Are you measure these test
– Sorry this is delta winding so
-why phase may open, How you measured these results? By using multimeter or transformers winding resistance measurement kits like TRM or CPC 100 ??
– If you use multimeter secondary value will show a minimum of 0.1 ohms in multimeter but if you use proper testing equipment means values to be in milliohms
– Yes for secondary should use this equipment
– What I think why phase is open hence when you measure YB the result =RY + RB, see even vector group connection diagram
– Actually, if it is star means red short but this is delta so yellow should open
– Multimeter

Hello, thank you for visiting our site
By joining our WhatsApp and Telegram groups, Discuss international electrical engineers and solve your problems about electricity. You can also take benefit of our free files and see our training packages at the link below

For more services, send a message to our WhatsApp support number:

– How to download the s1 studio data model from the internet?
– Go to data model manager

– Do you know prive of DIgSILENT Library software?
– Anyone has a 7sj82 device driver V07.50.10?
– You can get Siemens website
– Only available V07.50

– What is the reason of ABTS (relay)function only gives rise to the command to the transformer tap?
– Hello! I´m changing a communication SIPROTEC 4 7SA612<->(RS485)RMC20 RuggedCom<->(RS232)PC to SIPROTEC 4 7SA612<->(RS485)[RS416 RuggedCom]. At SIPROTEC 7SA612 I´m using the PortB with an AME module (pins 3 as RS485 A Signal, 5 as GND, and 8 as B signal). At RS416 I´m using pins 2 as A signal, 7 as B signal, and 5 as GND. Between pins 2 and 7 I´m using a 120Ohm resistor. Unhappily, the new configuration isn´t running. Although, using RMC to convert 485 to 232 before connecting RS416, the communication runs. So, some suggestions to establish communication RS485 between SIPROTEC4 7SA612 and RS416?

– How to calculate fault current with RMS value?
– Inject current a little bit more from Setting value.
– One of my multiline 489 motor management protection relay is having a Reverse Power fault on Generator-B, I removed the relay and installed it on Generator-C, the same Reverse Power fault surface on the same relay, please can anyone help me to troubleshoot this?
– Please check the current direction selected on the relay with respect to the CT Polarities

– Hello Everyone I am a fresher electrical Engineer, Having a problem with the relay connection.
– When we pressing the first Switch our lamp one goes on and when we pressed the second switch, the second lamp goes on and our first lamp goes off. When we pressed the Third switch our third lamp goes on and our second lamp goes off. And finally, we have the stop switch Button when we pressed All lamp goes off.

This is a technical group to discuss technical matters. To join, please text “interested: on WhatsApp: +989129613659

– Don’t know why I am not getting transformer winding resistance properly? but remaining all tests are ok
– In the same tap I Am not getting an equal resistance value, I m getting RY=89mohm YB=104mohm & BR=111mohm
– Is it testing equipment is calibrated?
– Try measurement with higher current…say 5 – 10A
Test without regulation winding. RY may have some issue?
– Avoid using clamps on nuts or on threads. Clamp it on the main stud.
Make sure tightness in the testing equipment or on the transformer side.
Records the value in the same or nearby temperature.
You suppose to get similar values.

– Is there anyone who has DR analysis material? How to the analysis of any disturbance recorder? how can we analyze fault? Which kind of fault is this or how can we identify the fault?

-Hello everyone. Does anybody know MR tapcon AVR handling?
– When CAN bus communication cut between master &follower AVR it’s not operating in independent mode. Voltage regulations are not performing.
31/digsi 4, abb26 – iec 61850 protocol S: Anybody how to view digital event for SEL relay?
– Hello anyone has RET615 abb relay ANSI connectivity package ver. 2.0?
– I have ANSI relay product version 2.0.6 .. I have installed 4.0.3,4.04 and 5.1 ver.. But when in ordering selection tool XC product version not shown
– Relay ordering code is

– Use update manager and update your PCM
– This all relay one software only acSELerator QuickSet SEL-5030. –

-Anyone may send the Rel650 v1.1.0 connectivity package?
– Can anybody help to share the “life assessment report for transformer “ for my reference?
– The configuration online and offline are different, you have to read the device and then start Monitoring
– I want Alstom to make MViec 61850M 61 relay catalog. Anybody have?
– Screw will be there on the sides. we removed both screws but it is not open
– Pull it or put screwdriver at outside and push slowly…shake from all sides..make it softer and open
– Parameter set of the relay should not be higher than the relay template in the Software
– Could someone explain the power management system?
– How to solve this?
– You missed the front panel! Scroll down and you can see that the device does not have a front panel. Drag and drop a front panel liberally and then check the consistency
– What’s cb2?
– What should I do about this?
– Your DIGSI need to have the same P.Set as the device have, So update your DIGSI which is suitable for your device
– Where 2 generators are sharing a network load both are in droop configuration? What would be the effect of manual increasing the speed on one of the generators?
– 1. If the network is grid-connected, the frequency is locked, hence the generator will take more load.

– If it is an isolated system, then system frequency will increase…
However, when 2Gens ate running one should be master and the other should be in droop….🤔🤔
-What is droop configuration?
– U’ll find this in the turbine control panel. Generally… For turbine control in grid sync condition or load sharing mode…

– What is the reason the generator shaft current would be increase??
– Rotor Earth fault with Pulse injection or any other method?
– In the shaft, we have CT and the CT cable connected to the shaft current monitoring device
– Can we able to communicate through Multimode patch cord on Single-mode port? anybody knows pls clear me. Insulation failure of rotor wdg?
– No everything it’s OK actually when the turbine rotates high speed the shaft current also increase that I want to know what are the would-be shaft current increase
– shaft current increased means, on load if MVAr is High that time shaft current is higher side if the load is less than rated and MVAr is low u get low shaft current

– What’s mean by cold load pickup protection?

– What is the purpose of this Aviation ball?
– Giving information to pilot that there is a HIGH TENSION LINE. Warning balls for airplanes

– I have some issues with my S`iprotec compact 7sj802. I have 3 VT connected in open delta, I set U12, U23, UE based on the connection diagram, but I have Over/Under and General Trip LED. Now I switched off over under voltage function to solve the issue

-Can anyone help me whether the connection type is ok?
What about matching ratio phase vt to open delta vt, it is set 1.73, is it ok?
– Instead of 1.732 put 3, Normal 110/√3, But broken delta 110/3

– Relay shows blocked mode. how can I reset it?
06/abb, abb58 – etap training manual pdf“Nouman”: settings error.
– Device MLFB and disgi MLFB mismatch
– Correct digsi MLFB. U should hv device file. Not variant file

-Does anyone clarify My CT has 30 VA I need to add AVR Relay so that power consumption is 35VA & intrinsic consumption 1VA above which burden, I have to follow?

– Hi.. my relay file has VD address 10003 whereas the relay itself has a VD address of 10001 in Siemens 7UM61. How can I match?

– Hi bro, what is the difference between partial busbar protection and high impedance busbar protection?
– partial you mean Low impedance?
– No.. that one also high impedance only
– I think connection might be the difference

– What is the origin of the abbreviation KMBG the main switch?
– Please clarify… Why ICT require both sides of V/F protection?
– Anyone test Siemens distance with the double kit?

– For directional relay 67 ANSI feature. What is the angle normally we set in the relay? That relay should operate in one direction.
45 degree. Yes. Forward Direction

Click on the photo to receive the tutorials

– It depends on your system. If it is a plain feeder and zero seq point behind your relay then 30deg while if it is transformer feeder with zero seq point in front of the relay then 45 deg
– Thanks. Can you please share its formula how it is decided to be 45
– Zero sequence point in front of and behind the relay means? Can u explain a bit more?

– Under impedance protection testing details with calculation, if have any documents impedance testing
– Does anyone has testing documents for Siemens differential relay apart from the usual Siemens documents(Manual)?

– Could anyone tell me how can I find MTA from the characteristic angle of directional overcurrent relay, because as you know when we testing in omicron we need MTA, but in relay setting there is the characteristic angle.

– Hi anyone use megger TDR 1000 /3 fault dectector for cable??
– The SQL server error is popping while opening PCM 600 software
– Can u please guide me on how to get rid of it

Electrical engineers can find us on WhatsApp, Likundon, Instagram, site, and email.
To follow And use the content between engineers around the world.
Electrical engineer Dr. Saeed Roostaee
with his online training about using and working with relays will help you learn, work with relays in the shortest possible time and at a reasonable price.
Follow us on

WhatsApp : +989129613659





Pack details on

The final setting is 85v stage 1 pick up so when I reduced the voltage from 100 until 85V its picked up LED & BO Also but When I need to Chek drop up it will drop up only 101 V
– So it’s showing when the system is healthy to still UV is not reset. So how can I make drop up LED & BO before Nominal voltage 100V
– You want to Decrease the drop-off ratio, this setting will come additional setting check
– My drop off ratio is 1.2
– I think to keep a minimum of 1.05
– So you will get 85×1.05=89.25V
– actually, secondary of a bushing CT is connected with AVR for OLTC because AVR needs the ongoing load value of a transformer. This means that in case of overloading conditions, AVR will be blocked. So, one CT is enough for giving a response.
– Here in all OLTC, CT is connected in Y Phase only. Is there any specific reason for it?
– Maybe it’s a practice
– AVR is using just to maintain the Nominal voltage. This CT is are using only for measuring purposes. Not protection purpose. So one phrase is enough for AVR
– What is the need for measuring current in OLTC?
-: In AVR CT they are using 2 purpose
1)when current reach 120 % as per customer AVR will not give rise or lower command (AVR BLOCK)
2)circulating reactive current detection That CT is used for winding temperature measurement

– I am going to take the initiative to offer a 100 percent free training course on Autocad Electrical which is one of the most wanted software globally.

Electrical engineers can find us on WhatsApp, Likundon, Instagram, site, and email.
To follow, And use the content described and easy talk to engineers around the world, text on WhatsApp, please.

Electrical engineer, Dr. Saeed Roostaee
with his online training packages about using and working with relays will help you learn to work with relays in the shortest possible time and at a reasonable price.

Follow us on

WhatsApp :+989129613659





– Hi, anybody has a tool for making an operating curve for OC, EF, Overflux where I can merge 2 to 3 stage DT/IDMT
– Related about IEC 618590 protocol
– actually, I need to merge Generator Over flux and my proposed setting DT/IDMT needs to merge on the graph.
– Do anyone knows what is the purpose of the Lightning arrester. I know the purpose of surge arrester But need to know why we use lightning word especially lightning is quick, like 50us, and surger is to 200ms to 1000ms… lightning has bigger voltage, and surge bigger energy.
– Lightning arrester is used for high-voltage against natural phenomena. a surge arrester is used for high-voltage -Please explain a simple process of how this occurs with an example if possible for you
– Lightning arrester..1)used in buildings is a plain rod with ionizing effect and transmits the high energy to the ground..2) used in switchyards and generator terminals is an NLR device which conducts the high energy to ground, it can also be in a combination of surge capacitor depending upon the equipment being protected.

– What will happen when lightning occurs on a transmission line. Then will it travel to substations?
– OHGW is used to protect T/L from lighting. It didn’t travel to substations, however, each piece of equipment in the substation has a separate bodyguard for lighting
– Then sir why we use lightening word for LA If is not protect from lightening ie from the sky
– LA is installed in a substation near T/F. In starting also Means incoming of Line. Sometimes on both sides of T/F. In some, they only installed on the HV side.
– That’s why the first equipment in swyd where this transmission line ends is the LA to protect from lighting and surges as well.
– Shield wire is also part of the lightning protection system To protection trafo from switching surges

– Why secondary side of CT is shorted?
– How to measure PT resistance???
– With the help of resistance meter kit.
– Do you mean pt winding resistance?
Yup insulation resistance with the help of megger?

-Earthing should choose from the VT body or another point??
– What is the range (min) & (max) value of insulation resistance???
– Because at secondary side current is hardly 1 or 5A so in that case voltage is too much If we open the terminal there is a chance of the blast
– What will happen when the secondary is open-circuited and your primary is on load, according to the transformation ratio, the primary has to be there is secondary, As secondary is open-circuited, the current will flow through the core?
– As the core has a high impedance, even a small amount of current through it will produce an extra-high voltage which eventually fails the insulation and a short circuit happens.
– So in short never leave your secondary in CT open circuit or lose.
– Any spare core should be shorted
– A PT or VT has its primary resistance (is from the HV tap node to the ground) in the range of 10-100 ohms.

– It is an old distance relay, and it works on the principle of resistance per phase?
– This is not a distance relay. This I’d line differential relay.. for a short distance with a pilot wire protection system.
– The two pilot wires are calculated with a loop resistance 2*R and a resistor R
– So how can I calculate the setting? any procedure?
– The Instrument transformers do alter the original signal during transformation, so the relay allows for a minimum phase shift during transformation, so the phase shift can be accommodated
– It is a family of the DLN Should give a basic understanding
18/abb pcm600, abb14 –IEC 61850 training Bhatti: I try to do so…
– Transmission line protection by pilot wires (pilot relaying) is limited to 30 to 40 km in route length. For longer transmission lines and sub-transmission lines or even distribution feeders, distance protection is used.
– So they are in theory basically born of the same philosophy of resistance per length of the chosen pilot wires
– This is limited to the pilot wire differential applications.

To join our Discussion group, please text on WhatsApp: +989129613659

– What will happen if one CT sec. star point towards the object and one CT sec away from the object in differential protection?
– The relay will act for external fault.

– I have one question that what is the formula or how do we calculate the arc flash energy values for the specific switchgear?
– There would be a non-zero component of differential current on all phases. t = time duration of the fault
– You may also star towards the object and load. these features can be set in the above-named relays Once it has clocking features, it also has to come with sequence tweaking for they work together to give the microprocessor a sense of rotating.
– DY set the clock at 6 to invert, not o

– Anybody sends an IEEE guide for safety in SUBSTATIONS earthing Testing parameters.
– Can You share any testing procedure and method of transformer testing.. Pdf?

– I have to replace existing Solkar Rf relays with Numerical relays. What consequences need to face during these modifications? Someone does this job before please suggest a line of actions, logical sequence without interruption of buses.

– What is Digsi – 4 & Digsi 5 software? how to use this?
– First of all you need to install it on your computer. Digsi 5 and 4 are the software we used to configure Siemens Siprotec relay gamme.
– Can I configure siemens all types of relay to using of this software?
– I don’t think . Digsi is proprietary software.

Electrical engineers can find us on WhatsApp, Likundon, Instagram, site, and email.
To follow, And use the content described and easily talk to engineers around the world.
Electrical engineer Dr. Saeed Roostaee
with his online training on using and working with relays will help you learn to work with relays in the shortest possible time and at a reasonable price.
Follow us on

Whatsapp: +989129613659





– How to simulate protection function using a virtual injection in Vamp255? How to assign the DR in Micom Esergy Studio soft?

– Voltage measurements issue across the output of the charger
– Voltage across the phase- neutral found ok. 120 v. But across the phase – ground couldn’t found. Slowly go to zero volts.
– How much is neutral to the ground? What is the charger rating?
– Zero volt
-Maximum current 27.2 Amp
– That is what we call floating voltage, phantom voltage (Ghost Voltage)
-The reason for this is there is no real link between those two points Or there is saturation in the source hence the load loading the source phenomenon
-This can happen if, for example, you are trying to power a 100W 120v rated electric bulb using the output from a source that has a lesser burden let’s say a VT with a 50VA burden
– Check for Case 3
– what is the actual reason behind this issue
– I mean why it happened like this
– If case 1 is suspected Look for a digital multimeter with an LoZ voltage reading range check for potential. If the value is zero still check for Case 2. Short the two suspected terminals through a 2 Amp fuse. If the fuse does not blow Check for Case 3, Look at the burden of the transformer, and test the in-built transformer for coil continuity.
– By which time you would have already found your problem?
– Please note that all the steps have to be done with any multimeter that has the (LoZ) Auto Voltmeter. Start a Private chat with me, if you still need help troubleshooting
– In PCM 600 SOFTWARE unable to read relay. can anyone help?
– It says relay is an inconsistent state. Try again to read from the relay. Make sure u are on the main page of HMI
– Check the IP address. Then relay reset using the power of the relay. Then try to connect hope resolve
– Made Power on/off then the PCM 600 read from Relay
– What are the criteria for min line length protected through modern distance relay?
– I think it can be 100 meters. There are no criteria it’s all about economics and how sensitive the supply is No minimum or maximum length !!!! Notice that during shunt voltage becomes very small and currently becomes very high, hence admittance tends to move towards infinity. But for a very short distance, line differential should be preferred. The 9 members of the matrices can only be compared to the set values by the relay microprocessor as the diagonal members are in theory smaller than others.
– Distance protection zone 2,3 operating time coordination with backup OC n EF protection if not meet grading shall we block the all zones
– Hi. I have one key question that shirt circuit ratings are normally given in 1 sec or 3 sec. For instant 25Ka for 3 sec or may 25ka for 1 sec.

-So how do we choose 1 sec or 3 sec or decide or go for type testing
– The essence of this rating supposedly on switchgear is to know the limit you can push the interrupter to, but it is not good to test switchgear at these values (not that you can get a 25KA test kit) because this would be defeating the purpose of NDT Non-Destructive Testing of the switchgear interrupter.

And for a transformer, motor, and other devices, if Isc is on the nameplate then it is the current that would spoil the coil if it lasts 1 – 3secs. The maximum short circuit would be less than or equal to the rated current times the inverse impedance voltage.

Please read the paper.

– what is the usual Zone 1 trip time setting in distance protection?
– 0 mS
– How to get Wh values from siemens relay through IEC61850? We are getting only pulse qty
-How about 50 ms Zone 1 distance protection trip time setting?
– Even setting 0, the actual trip will be around 40ms may take?
– Is the relay in circuit/ already installed and in use?
– I try to change some output configuration after that relay configuration error is coming
– Setting File will be stored in the relay, not an error
-Manually reset the factory default setting, then try to ups Lod the same configuration.
– How to do a manual reset?

– How to trigger disturbance records for Binary input of ABB relay. I had configured binary input 2 for disturbance records in application configuration but not triggered.
– Generator pole slip protection regarding document can I get sir?
– Which is preferable to use CVT or IVT?
– CVT Suitable for outdoor. Cheaper and used for wave trap ( communication between two substations )

– How to calculate Relay setting for differential protection…??
– Old relay was DTH31 with a Bias setting of 15 %
– Now installed RET615 relay.
– How to calculate new settings?
– Numerical Relays, No need for this type of connection.
– Replacing relay panel is existing substation.
– Can’t change CT on both the side.
– May I get any documents where have pole slip testing procedures available. please. Please share these books.
– Nothing to share just cover pages
– Hello Partners. I need a favor from you about software to use Sepam Serie 20 Relay, please
– Don’t switch the supply off for this relay otherwise it will damage
– What is the circulating current in parallel transformers?

– What is the suitable differential setting?
– could you suggest to me which brand is better?
– Eltel Or Doble CPC 100/ TD12 is the best. M4100 Doble year kit is rugged

-what is that CTM?
-lotting machine
– what is the meaning of the BR.D reading I got from the Megger insulation tester?
-Bridged connection between life and earth

Dear engineers, you can share your related issues in our discussion groups to find out the solutions. Please text on WhatsApp to join: +989129613659

– Someone, can you help explain wet/dry contact? Please
– With voltage/potential it is called wet contact. Does anyone have to cost data of medium voltage submarine cables?

– Anybody knows about the dielectric strength test of oil used in transformers
Kindly share about its minimum acceptance result standard if any?
– Yes tried but nothing displays that’s why I ask?? Could you tell me the default password??
– 2 for configuration change
– You can reset from relay only.
– First of all go. relay default front page then -> then give password down key and reset (ok)
-Actually, I reviewed the manual it was written 4digit password but didn’t mention password accordingly we just tried 0000, 2222, 4444 These three also passwords are incorrectly shown.
– You communicate with pc? Default password 2 for configuration change/ 1 for operator
– Only 2 password
– No just by hand
– Ok. Press only 2

If interested in the ETAP discussion group, send ETAP on Whatsapp: +989129613659

– Can anyone share an SLD for protection?
– Please share the full version pdf of IEC 62271-200&100
– Anyone can share IEC 61643?
– Does anyone have any testing procedure for Ziv relays

– Can anyone share your area panel scheme which shows DC control supply distribution and how redundancy is achieved for control supply in case of failure of the one?
– This is a good system as it parallels feeding and it will not be in if one of the power supply get trip
– Did anyone noticed a dc voltage spike at the output of diode assembly? due to multiple dc earth faults.? Actually, in my system, 4 blocking diodes are being used. Two earth faults occurred simultaneously in the system, first earth in source-1 +ve branch and second earth on source-2 negative branch due to which system voltage got doubled to 440V
– Did anyone went through such kind of situation?
– Is there any difference between core balance CT and Toroid CT?
– Some Toroid CTs are used for core balance measurements because those ones have very high sensitivity & resolution.

– Please share the practical Earthing book.
– Does anyone have ABB SPAJ 140C or 150C operational manual. please share
-Please send a differential relay Calibration test report format.

– Can we install/retrofit the ERMS switch in the existing LT swgr panel ??

– Who has experience with microgrids here?
– Distance relay test procedure please by Omicron without OCC
– You should do it yourself because there would be peculiarities to your system not in mine
– hope you have a CMC kit and a license file?
– Have any calculation for RIO Graph .. please share

– We are having random tripping of Terasaki ACB (ARS216S) which is connected on the primary side of the step-up Tx (415/6.6kV) which eventually is causing to trip all the GCB’s connected in parallel to different gensets. Any idea what can cause this issue? The sec side of the TX is HV VSD which is running absolutely fine without creating any issue.
– Tripping is immediate after startup?
-No. The system sometimes runs for even half an hour and then just trips for no reason without even introducing a new load
– More. ACB should have a built-in event recorder. It will give you cause and time of tripping
-How to download that? Is there software or something?
– Try step by step to analyze and move forward to correct
– No. It should have an LCD display that shows real-time current. Configuration settings and the event history of ladt tripping
– Can you share its screenshot or video
– Yes correct. Will ask for the photos once it will occur again. Right now the system is working fine for almost 9hrs

-Quick CMC through Distance protection test possible sir? Or advance Distance module required for the test?
-Testing is possible, but need to manually calculate the current and voltage value for a specific impedance, in quick CMC.
– May I get manually calculation of Impedance
– You can select directly impedance instead of Voltage & Current…option available…
– Distance protection test report may I get sir? Calculation of distance protection may I get sir? Please share.
– Artificially Line Ground fault created on Raigarh puglur HVDC to tune relay settings.
– Always theoretical & assumption workout may not gives accuracy. Sometimes needs to be tune in a practical way
– I saw firsthand something like this go wrong, and it was fatal
– I am working in HVDC Raigarh and this line fault is tried several times in the commissioning period to get accurate tuning of the online dc line fault locator.
– I know it is really dangerous to carry out the line fault successfully
– There are remote controlled projectile devices, so try to be on a safe side
-: How actually is that fault created?

-I need this relay technical manual anyone has kindly share with me
– Is it possible to share ur valuable advice on the following concern. Resistive/impedance reduced fault happens when the fault is not happening at the first bus, say after x km of line/earth. Recall that the line has intrinsic properties of ( y + j z ) ohm/km. Also, there is an intrinsic resistivity of the earth which increases its resistance by distance R = pL/A
– Why we need DEF protection in distance? But 87 cannot detect Internal faults? Is REF more sensitive as compared to the differential
– I read somewhere that phase-to-ground faults are highly resistive, and in order to clear these faults we need more sensitive protection like DEF?
– SEF not DEF
– I think he’s asking about the Directional Earth fault
– 87 detects internal faults on phases
– Yes I am asking about DEF also which is mostly used in distance relays for transmission lines
– What’s the stability test? How can perform for 66 VK substation?
– Please send the method procedure for this test.
– When the energized line comes in contact with a grounded thing like a tree branch it finds its path through the ground back to the substation. Because the magnitude of the current may not be enough to offset the 0.1 – 0.2 I> set for earth fault, it detects only through the NGCT a negative feedback current more like the SBEF but it monitors when there is a reverse from s2 – s1
-So this means DEF is used because it is used primarily for phase to ground faults and also it is more sensitive to Ph-G faults?

– Anybody knows about the multi-stage series power filter?
– There is no potential difference hence no effect
-No. due to the complete cycle.. neutral should be needed.
-Consider Phase to phase then?
– I guess. Phase to phase, it will come as shock as the circuit is completed
– It will be a short circuit
-This person will get electrocuted based on the condition of his hands (ie., Surface resistance) and his body resistance… Pls remember the step potential diag, with differences, the earth is replaced with conductor and legs with hands…
– We need to know the cable impedance per meter, the current flowing, and distance hand-hand
-Voltage drop is negligible. See also resistivity of aluminum vs soil resistivity

Join 20 WhatsApp groups for protection engineers

  • WhatsApp Grp 01: Protection Relay – General
  • WhatsApp Grp 02: Substation Automation – General
  • WhatsApp Grp 03: Transmission line protection
  • WhatsApp Grp 04: Transformer protection
  • WhatsApp Grp 05: Motor protection
  • WhatsApp Grp 06: Generator protection
  • WhatsApp Grp 07: Overcurrent and Earth Fault Protection
  • WhatsApp Grp 08: Busbar protection and Bay controller
  • WhatsApp Grp 09: Breaker protection and control
  • WhatsApp Grp 10: Protection Relay Testing and commissioning
  • WhatsApp Grp 11: DIgSILENT
  • WhatsApp Grp 12: ETAP
  • WhatsApp Grp 13: PSCAD
  • WhatsApp Grp 14: IEC 61850 configuration
  • WhatsApp Grp 15: Switchgear GIS & AIS
  • WhatsApp Grp 16: GE Relay Configuration
  • WhatsApp Grp 17: SIEMENS Relay configuration
  • WhatsApp Grp 18: Schnider Relay configuration
  • WhatsApp Grp 19: SEL Relay Configuration
  • WhatsApp Grp 20: ABB Relion configuration or more services, send a message to our WhatsApp support number: +989129613659

-How can calculate Vector group of CT?
– CT don’t have any VG
– However they do have minimal phase shifts
– Just D or Y connection depending on application?
-basically this CT used for Differential protection. Star is best for the object to be protected. Star point on all s2 for HV CTs. Star point on all s1 for LV CTs
-This is center taped so s3 for full ratio or s2 for half ratio

– Does anybody assist what is slope value for the single side-feed line? I saw the manual they didn’t mention value. Is there any fixed value for that slope? In setting also didn’t find value for that single feed value.
– Slopes are calculated! And it is the boundaries that set trip areas and operating regions. What is your operation criterion?

– When I want to test different Protection for DYN11 using quick CMC how much the angle of secondary current when I use 0 angles for primary side current certainly for the same phase.
– For Dyn11. 180+30=210..& balance angle Should be applied in LV side
– why +30 for 11 I guess it is – 30
– -330(CW)=30(ACW)
– Why use quick CMC? When you can use Advanced different operating characteristics?
– Try any of the two and just input your system parameters for both test object and system. Omicron would do the rest for you.
– Actually, as you said it is better but there was a problem. When I open diff characteristic the connection between CMC and pc interrupted
– Have you ever the same issue? Actually, I don’t know the reason

-What CMC model do you have?
– Cmc 356
– Okay then you should be having RJ45 Network cable
– When I use oc.. quick no problem, When I use advance diff the problem occurs
– Download the latest model of Test universe and install it. Most likely your antivirus engulfed some registries that contain omicron executable files
– Deactivate it when installing and reactivate back shortly after. Check if u have a license for advance differential

– How to test current reversal and power swing in p546 micom
– Kindly how to test differential really using quick CMC

Protection Relay Discussion Group on Telegram:

– Hello, anyone has documented on power system stabilizer (PSS)?
– help please by checking to debug online in PCM ABB REL670 is showing block input 1 to its all protection what can be the reason?
– means block input is 1 there is nothing attached to it but it is 1 and no function is tripping
19/relay, abb pcm60059 –iec 61850 book iindia:
21/relay, abb53 – +91 79803 90901 changed to +91 98107 76038
23/relay, abb50 – digsi 4 manual: Carlos Matias DMA.vcf (file attached)
– Do any one is having latest ANSI/NETA MTS and NFPA 70B standards? Is it possible to share?
– Anyone have idea in EF19 thermal overload relay make abb While testing relay operating less then setting current (that means 75% of setting current)?

– what‘s the reason for Using the function 59N and if necessary creating a ring loop for all my relays in the SWGR??
– Do you have information about C&P in Substation?
-132kV, 24MVAR Capacitor Banks (group 1 & 2 = each 12Mvar, 8MVAR/phase) when tested on-site by applying three phases 400V give acceptable values of 318mA on each phase thru clamp meter.
– However, when group 2 of the blue phase was intentionally cut off for testing purpose, it showed the following suspicious result? (instead of 318mA)
Blue: Group-1 160mA (normal) and group-2: 0A (acceptable value)
– What is the reason behind 290mA values for red and yellow? It shouldn’t be 318mA?
Anyone, please
– What could be the solution for the above error
– Is it over Ethernet or Front port
– Also you can ignore the error
– In case of the front port try with Moxacable
– Schneider Recommenda Moxa cable for front port communication
– It’s with Mona cable and front port
-What is the communication port number your using?
– Can you send the photo of the device manager moxa driver settings?
– Use com1 for communication. If still not able to send a file, try to send required parameters only. Open setting file, say you want to send VT PRIMARY, then click on and send data to the device

– If Anyone has a 7sk80 thermal overload calculation sheet pls share
-While extracting disturbance recorder in Micom p643 relay, we have this error operation failed?

– In my power plant, DC system +ve is solidly earthed. Checking it through megger to make the BGFT kit but now able to locate the fault. Due to a system running I cannot switch off the dc controlled feeders. Can anyone suggest to me any other option, idea, or any other kit through which I can get the help.?
– Megger BGFT is the best way to locate the DC ground fault without switching off DC circuits, u just need to measure the impedance from the main source until reaching the branch circuit that has the fault
– But it is failed at my location to trace the fault. As per OEM due to complex DC circuits and the use of electronic cards in breaker feeders is not allowing the kit to trace. But this should not be the reason. Looking for some more options to identify
– I have a question for everybody, Anyone has a document or example for cargability of CTS?
– I am doing testing for sepam87T, diff function not operate but other functions in the relay are operating. I tried to fix this issue by activation output and led but still not working. The relay read current on both side and read diff current but there is no output
– I didn’t check sepam87T. CT Matching Factor (ICT) Star point of the CT connection Vector connections of TR While injecting dual Current, check the phase angle magnitude /Compensation.
– Check output configuration, And Confirm any Blocking signal generate due to Breaker feedback / CTS…
– Actually I checked output configuration. What do you mean by blocking? For Example 3 Wdg differential, only you are injecting Two Wdg, Third wdy CTS may Block the output…. But Function will work…

– Can anyone help me to resolve this issue, I installed PCM for the first time.
– can you see some QR codes in IED?
– No, nothing like this on IED
– 220kv Alstom china, breaker drawing required, kindly share
– Hello! Suggestions to power simulators instead doble or omicron?
-ISA. DRTS series from ISA

– Crowbar failed alarm was triggered in my AVR system (ABB UNITROL 5000) and the same got reset automatically. failed alarm triggered. Can anyone tell me the actual root cause to avoid in the future.?
– Do anyone has Abb REF 541 relay operational manual please share it with us
– Can anyone please tell the testing procedure of low impedance busbar protection for 132kv single breaker double busbar protection??
– Let’s see your single line first
-Next step?
– Testing procedures can have peculiarities. I would give you the testing procedure if I see the power flow / single line.
– Loss of Excitation of generator protection test process or calculation may I know sir .. please share related documents.

– 90% stator earth fault protection Test process please share with me.
-Have any process. Voltage injected in relay PT coil but not trip. What is the protection operating criterion? Is it only open delta voltage based or NGT voltage based or both?
– Open delta voltage based
– Inject normal voltage in any one phase of terminal pt so that no VT alarm came. Then inject in open delta pt and NGT as setting values. It should trip
– Setting value 14 volt
– Anyone can give an idea about starting auxiliary relays manufacturing?
-Setting value injected Ji .. but not coming trip /alarm
– Is there any other ct or vt alarm coming during voltage injection?
– LV BCT can’t be ignored for REF. For LV side BCT is mandatory for REF SCHEME
– So anybody has used IPCT? What are its consequences?
– These connections might be possible when one of the windings of t/f is delta connected (like dyn11, ynd1, etc.) but these connections can’t be made on auto t/f
– So, you mean either higher values or IPCTs should be used for mismatched REF if it is connected!

– Anyone has a CGI14S manual?
– Can someone please help me with the soft copy of NEC2020
– CG relay communication software anyone has?
– Default password..?
– 000000
-For 7UT51?
– 6time 0

-kindly find below the steps to restart the 7SR relay Switch off the relay.
– Press and hold the TEST / RESET key (continuously until the startup menu display) and switch on the relay supply.
The display will appear startup menu. Select cold re-start or warm re-start. Please check and update the relay status after re-start.
– In 7SL86 line differential relay charging current compensation setting is mandatory for local and remote end OR only local end?
– Please share the Scope of work for Numerical relay testing and frequency.

-Does anyone have a power transformer acceptable error limits of its testing like winding resistance, ratio test, etc.
– What is the purpose of using TPY accuracy class CT?
– Check the device specified tech norm applied
– Hi. Can someone confirm on Energy Meter accuracy testing of.0.2 and 0.5? What test equipment is used for this testing?
– Please confirm
-CMC 356 Omicron

Hello, thank you for visiting our website.
Join our WhatsApp and Telegram groups, talk to the world’s electrical engineers and solve your problems about protection relays and substation automation.

To know details about our new course (PCM 600), click the link below:

various Electrical Engineers of Substation Automation segment from all around the world are gathered. To join our protection relay WhatsApp group, please click here to join the Whatsapp Groups+

click here to join Protection Relay Discussion Group on telegram

Sample group discussion:

– could you please share apart from ABB/Siemens/GE/Alstom/SEL relay do you come across or experienced any GOOD protection relays
– Ashida also good protection relays
– yes, heard some products are approved in UAE
– ASHIDA’s presence is there in UAE, Kuwait, Oman, KSA in the Middle East.

They Have all Types of Relay & Controller?
– Anyone Dealing with Smart Grid Controller?
– eXP / REF601 is a feeder protection relay for protection and control Feeder protection and control (Numerical relays)
– ABB REG 670 Gen protection
RET 670 t/f protection
REL 670 line protection



To join, Please send “interested” on WhatsApp number: +98912961365

Click here to join these groups on whatsapp

click here to join Protection Relay Discussion Group on telegram.

Join our WhatsApp Groups, just text us on WhatsApp +989129613659

click here to join Protection Relay Discussion Group on telegram.

– Please find the attached document which reflect the contents that we will – ETAP LECTURE SCHEDULE.pdf

– Anybody can guide me about,zero-sequence current?
– I have only phase CT and residual connection.
– If no CBCT available then I0 how I can take it in line.
– What equipment, and Model?
– L&t ACB Breaker and mm10 relay.
– You have required to give the settings of measured earth fault protection in the relay, so by residual connection io directly come into line.

Telegram group link Protection Relay Discussion Group:

– Anyone knows how to check the capacitor with a multimeter

– Can anyone helps to identify, in actual what is the main fault? It occurs from last week
– master and o/c & E/F fault relay trip. And Simultaneously line Side SF6 breaker trip
– We have 9 MVA, two power transformers in 66 kV Switchyard Fault occur only on transformer 1 and only line Side SF6 breaker trip, I don’t understand this?? Please help
– O/c & e/f I think backup protection for short circuit or internal faults inside the TR.. check your protection scheme to understand further.
– all I can tell u is, it may be a heavy imbalance in the loading of the line. if it occurs once in a while & goes away… please note this & revise your settings through relay coordination.

– Anyone here, who can tell me about solenoid?
– Like this one solenoid
– Our Switchyard SLD, also incase SF6 breaker out of 3 poles 1 pole does not get close ( remains open). Kindly check this out.
– PTT-20201021-WA0000.opus (file attached)

– On my site, 33kv ht cable IR values are R=60 megaohm, Y=1 gigaohm, B =1 gigaohm. Please give suggestions if energies the cable.
– How much voltage injected into the cable?
– 1000 volt

Please send the group numbers which you are interested in on WhatsApp number: +989129613659

– Try to inject 5kv. From my experience, If you got the same value you can charge the cable.
– 60 megaohm is acceptable if I injected 5kv.
– If is it possible to keep the cable in sunlight, then conduct IR you can get better value.
– I had charged the 11kv bus when I got cable IR around 10 M ohm.
– Clean the cable jointing kit perfectly, then means if you find any carbon in cable termination. IR value can also improve by doing this.
– Around 1km cable laid
– I Am not saying to clean all the cable. Just clean only the HV Termination kit.

– If it is possible to try to do a route survey also as per standard minimum of 100 megaohms is required?
– Use a blower to heat the termination side it is ht sleeve

– Can anyone tell me the difference between the Hipot test and the IR Test of cables??
– In the Hipot test, we check magnetic earth leakage current. In IR test check cable insulation.

– the procedure in the Hipot test if it’s 11 KV we have to apply 28 kV for 1 minute and measure the leakage current in Milliamps, in IR test we have to use 5 KV DC Megger and measure the resistance in megaohms

click here to join Protection Relay Discussion Group on telegram: 

– Why it is 28kv? why can’t we measure with 5kv?
– The Hipot test formula =80%((2*rated voltage) +1kv)
– In the formula, it’s not coming 28 kV
– For your understanding, I send the Hipot test voltage of switchgear as per standard, for differentiating Hipot and IR Test.

– How to increase normal current from 0.4 to. 08 by ABB REJ501 relay?
– Ct ratio 125/1 amps
Now want to change .4 to.8.

– Hi anybody has an idea how to calculate the THDi from my current measurements Without the use of a Multifunction meter?

– Why impedance correction factor is needed for short circuit analysis
– anybody used line differential relay 7SD8021? Please share the setting details.
– where this relay is used?

– Please I need a Test Report Format for REU615 as a Synchronization Relay

– Any one can help, this contactor is not on that’s why my motor not on…..any possibility

– Underground cable testing procedures.
– Check the coil and auxiliary contacts, check control supply and main supply

– I working on a 66/33 kV substation plant trip due to the VT fuse failure alarm. How to troubleshoot VT fuse Failure alarm?
– Please check the relay configuration. VT fuse fail should not go for tripping only for alarm need to be configured.
– Check the fuse may be broken, and I have also faced the same issue.
– Here alarm command parallel-connected master trip relay.
– It should give only a fuse fail alarm, but it should not give tripping signals.
VT fuse failure relay

To join our discussion groups, send “interested” on our WhatsApp team: +98912961365

– what is the use of short circuit analysis in relay setting calculation of a line or transformer? Why, because line settings are mainly calculated from the line impedance only not on short circuit data & similarly for transformer relay setting also from Transformer MVA & Tap setting are mostly needed.
– What is the contribution of short circuit analysis to distance relay & differential relay settings?
– what will you find when visiting a power station, green building, and Fiber optics factory!

To join, Please send interested on WhatsApp number: +98912961365

Click here to join these groups on whatsapp

click here to join Protection Relay Discussion Group on telegram: 

– What are the Commissioning procedures of HV/EHV types of equipment and different types of tests required before and After Energising the new lines/feeders, Transformers/Reactors?
856: You’re welcome for any request
Rai: Anyone has Siemens Step 7 smart software?

– Can anyone share the Commissioning and maintenance of the electrical power system by Keith Harker?
– what are the disadvantages of VFD?
it reduces the life of other components like cables transformers, etc. conducts harmonic studies as per IEEE 519-2014, and finds out the solutions. if it exceeds the limits prescribed in the standard then go for a filter

click here to join Protection Relay Discussion Group on telegram

In this package, all the training courses (DIGSI 4, DIGSI 5, ETAP, PSCAD, IEC 61850, PCM 600) are gathered. You can save your money by providing all courses in one pack. The training link and activation number will be sent to your email immediately after payment.

The details and samples of each course are placed below and if you need further information, please feel free to contact us.

Product Detail:

  • DIGSI 4 Training Pack
  • DIGSI 5 Training Pack
  • IEC 61850 Training Pack
  • PSCAD Training Pack
  • ETAP Training Pack
  • ABB PCM600 Training Pack
  • Trainer: Dr. Saeed Roostaee

PSCAD Sample

IEC 61850 Sample

ETAP Sample

ABB PCM 600 Sample

Learning is a continuous process and enables us to be competitive in our field. Consistent with this belief and built on a strong experience in this field, we offer video training courses for practicing professionals in the area of Substation Automation and Protection Relays. The material of each course is designed to help you to be a professional in the field.

Product detail:

  • DIGSI 4 video training (3 hrs)
  • DIGSI 5 video training (7 hrs)
  • IEC 61850 training (4 hrs)
  • ETAP for protection engineers (5.5 hrs)
  • Trainer: Dr. Saeed Roostaee
  • Language: English
  • Full lifetime access
IEC 61850 training package (4 hrs – 1.5 GB)
SIPROTEC 4 and DIGSI 5 training package (7 hrs – 1.8 GB)
SIPROTEC 4 and DIGSI 4 Training package ( 3hrs – 830 MB)
ETAP for protection engineers (5.5 hrs)
  • DIGSI 5 Training: 435 Minutes – Full HD Size ( 1.9 GB), In English, By Dr. Saeed Roostaee
  • DIGSI 4 Video Training: 185 Minutes, In English, By Dr. Saeed Roostaee
  • IEC 61850 configuration Video Training: 4 hrs Language, In English, By Dr. Saeed Roostaee
  • ETAP Video Training: 5.5 hrs, In English

61850 certificate links:

C 1000
C 1001
C 1002
C 1003
C 1004
C 1005
C 1006
C 1007
C 1008
C 1009
C 1010
C 1011
C 1012
C 1013
C 1014
C 1015
C 1016
C 1017
C 1018
C 1019
C 1020
C 1021
C 1022
C 1023
C 1024
C 1025
C 1026
C 1027
C 1028
C 1029
C 1030
C 1031
C 1032
C 1033
C 1034
C 1035
C 1036
C 1037
C 1038
C 1039
C 1040
C 1041
C 1042
C 1043
C 1044
C 1045
C 1046
C 1047
C 1048
C 1049
C 1050
C 1051
C 1052
C 1053
C 1054
C 1055
C 1056
C 1057
C 1058
C 1059
C 1060
C 1061
C 1062
C 1063
C 1064
C 1065




















































IEC-61850 is a proprietary protocol for the substation automation system. This protocol has capabilities that partially overcome the limitations of the automation system. In this protocol, it is possible to simultaneously monitor devices from one control center. In this course, we learn how to use IEC 61850 for integration and communication between different equipment brands.  

IEC 61850 Configuration Video Training

  • IEC 61850 Configuration (4 hrs – 1.5 GB)
  • Language: English
  • Trainer: Dr. Saeed Roostaee (Profile on Linkedin)
IEC 61850 System Configurator Video Training

Download IEC 61850 training pack

contact us or leave a comment on this post

Download IEC 61850 Configuration Training Package

  • WhatsApp +989129613659

Course Detail

Part 1: Substation Automation – an overview

This part overviews the development of substation protection and control system from conventional to digital substation with some pictures of a real substation. Then, it presents the importance of communication in this system and why it is needed to use a common communication protocol and molding function system in the substation automation system.

Part 2: An introduction to IEC 61850 & how to learn it effectively

A brief history of the standard from IEC 61850 Ed. 1 to IEC 61850 Ed. 2 and its purpose and benefits are presented in this module. One of the problems for learning IEC 61850 is the variety of documents and topics and the gap between academics and industry in this area. This part introduces an effective way to learn practical IEC 61850 standards.

Part 3: Overview of the main features of IEC 61850 – Part I

This part overviews the OSI model, MMS protocol, and the devices that are used in the IEC 61850 network. Then, different packets (GOOSE, Report, and Sample Value) and services (for time synchronization, master-slave, client/server, and publisher/subscriber) are presented in this module.

Part 4: Overview of the main features of IEC 61850 – Part II

The concept of object-oriented modeling and the data modeling of IEC 61850 are presented in this part. Then different types of GOOSE messages, report control blocks, and SCL files are introduced. This part also presents the connection terminals, communication, and time synchronization ports of a merging unit installed in the process bus lab setup.

Part 5: IEC 61850 data structure and data format – Part I

Initial IEC 61850 settings in DIGSI 5 and the connection between the information routing matrix and IEC 61850 structure editor are presented in this part. The device is opened via OMICRON IEDScout and the data structured of the IED and the relation of them and the IEC 61850 signals in DIGSI 5 are explained. Then the device is exported with different IEC 61850 data formats and different sections of the exported files are explained in detail. To understand the interoperability of IEC 61850, a device from another manufacturer (SEL) is also exported and different sections of this file are explained.

Part 6: IEC 61850 data structure and data format – Part II

This part presents different tools of the IEC 61850 structure editor in DIGSI 5. Editing of IEC 61850 data model and adding of the user-defined LNs are explained too.

Part 7: IEC 61850 station in DIGSI 5 and IEC 61850 System Configurator

A device is added to the IEC station in DIGSI 5 and the station is opened via IEC 61850 System Configurator to explain different parts of the station and the configurator. The connection between each editor in the configurator and the station file is also presented in this part.

Part 8: GOOSE configuration and the publisher/subscriber LNs

The GOOSE configuration between two SIPROTEC 5 devices is presented in this part. The publisher and the subscriber Logical Nodes before the GOOSE configuration and after the GOOSE configuration are compared in the IEC 61850 station files and the information matrix in DIGSI 5.

Part 9: GOOSE simulation via IEDScout

The publisher and subscriber IEDs before and after GOOSE configuration are simulated in the OMICRON IEDScout. The sniffer tool is used to capture the simulated GOOSE of the publisher IED. To show the GOOSE repetition, the value of the GOOSE signal is changed in the IED simulator, and the captured GOOSE after the change is analyzed.

Part 10: GOOSE configuration and simulation between SIP 5 & SEL relays

An IED from another manufacturer (SEL) is added to the station and the GOOSE configuration between SEL and SIPROTEC IEDs is presented in the IEC 61850 configurator. Then the simulation of the publisher and subscriber IEDs has been done via IEDScout.

Part 11: Time synchronization settings and SNTP configuration

The configuration of the SNTP (Simple Network time protocol) for time synchronization in DIGSI 5 and IEC 61850 system configurator is presented in this part.

Part 12: Case study – Part I

In DIGSI 5 training, relays were added and configured based on the diagram of the case study project. This part presents the IEC 61850 configuration in the same case study project. The IEC 61850 and SNTP settings have been entered based on the case study project documents. The table of the communication cables and the diagram of the substation automation architecture is described in this part.

Part 13: Case study – Part II

The report configurations based on the table of reports configured on servers are presented in this part. The signals of the distance IED are added to the data set and a report control block is added to transmit the event to the clients. The report control block settings are also explained in this part.

Part 14: Case study – Part III

The GOOSE configurations based on the GOOSES table and the GOOSE message subscription list are presented in this part.

Part 15: IEC 61850 configuration in DIGSI 4

This part presents the IEC 61850 configuration in DIGSI 4. The data model of a SIPROTEC 4 IED is shown in the OMICRON IEDScout and the IEC 61850 signals in the masking IO are explained with this data model.

Part 16: IEC 61850 configuration between SIP 4 & SIP 5

This part presents the IEC 61850 station configuration with SIPROTEC 4 and SIPROTEC 5 devices.

Part 17: Sample project

To show the application of GOOSE signals, this part presents a sample project. The IEDs and IEC 61850 configurations have been explained to send a GOOSE signal from SIPROTEC 5 to SIPROTEC 4 and use the GOOSE signal in a function block of the DIGSI 4 CFC editor.

Download IEC 61850 Configuration Training Package

Contact details

  • WhatsApp+989129613659

IEC 61850 library for Engineers

{.pdf} Time_Synch_IEC_61850_and_C37118_Harmonize.
{.pdf} 615 series ANSI IEC 61850 Engineering Guide.
{.pdf} 650 series IEC 61850 Communication Protocol Manual.
{.pdf} 650 series IEC 61850 Communication Protocol Manual.
{.pdf} 670 series 2.0 IEC IEC 61850 Edition 1 Communication Protocol Manual.
{.pdf} 670 series 2.0 IEC IEC 61850 Edition 2 Communication Protocol Manual.
{.pdf} 2013 IEC 61850 INTEROPERABILITY TEST Munich, Germany.
{.pdf} 61850 easy.
{.pdf} ABB AFS660 Switch High-availability Ethernet device based on new IEC-standard redundancy protocols PRP/HSR.
{.pdf} ABB AFS660 Switch High-availability Ethernet device based on new IEC-standard redundancy protocols PRP/HSR.
{.pdf} ABB is implementing the first commercial installation of IEC 61850-9-2 LE process-bus technology.
{.pdf} ABB review Special Report IEC 61850.
{.pdf} Advanced protection and control IEDs from ABB.
{.pdf} AGILE DIGITAL SUBSTATIONS The complete guide.
{.pdf} Analysis and implementation of the IEC 61850 standard.
{.pdf} Application Considerations of IEC 61850/UCA 2 for Substation Ethernet Local Area Network Communication for Protection and Control.
{.pdf} Applications of IEC 61850 Standard to Protection Schemes.
{.pdf} Applications of Phasor Measurement Units.
{.pdf} Applications of PMU measurements in the Belgian electrical grid.
{.pdf} The Application-View Model of the International Standard IEC 61850.
{.pdf} Approach to optimized process Bus architectures.
{.pdf} Approach to optimized process Bus architectures.
{.pdf} Automation at Protection Speeds: IEC 61850 GOOSE Messaging as a Reliable, High-Speed Alternative to Serial Communications.
{.pdf} The Building Blocks of a Data-Aware Transport Network: Deploying Viable Ethernet and Virtual Wire Services via Multiservice ADMs.
{.pdf} Calibration System for Electronic Instrument Transformers With Digital Output .
{.pdf} Challenges and Integration of PV and Wind Energy Facilities from a Smart Grid Point of View.
{.pdf} Challenges and Lessons Learned from Commissioning an IEC 61850-90-5 Based Synchrophasor System.
{.pdf} Colombian electrical sector adopting high redundancy communication design on a new HV substation


⦁ Communication in Power application.

⦁ Communication Protocols and Networks for Power Systems- Current Status and Future Trends.

⦁ Communications network solutions for smart grids.

⦁ The concept of IEC 61850.

⦁ CT Standard.

⦁ D2-01_07_Meeting requirements in an IEC 61850 station bus SAS.

⦁ Data transport network.

⦁ Dealing with Packet Delay Variation in IEEE 1588 Synchronization Using a Sample-Mode Filter.

⦁ Design and Implementation of Packet Analyzer for IEC 61850 Communication Networks in Smart Grid.

⦁ Design and Performance Testing of a Multivendor IEC61850–9-2 Process Bus Based Protection Scheme.

⦁ Design, Development, and Commissioning of a Supervisory Control and Data Acquisition (SCADA) Laboratory for Research and Training.


⦁ Developing Real-Time PMU Applications for Smart Transmission Grids.

⦁ Development of IEC61850 Based Substation Engineering Tools with IEC61850 Schema Library.

⦁ Differential Protection RET 54_/Diff6T function Application and Setting Guide.

⦁ Digital umspannwerk.

⦁ Digitalization in Transmission and Distribution.

⦁ Direct Evaluation of IEC 61850-9-2 Process Bus Network Performance.

⦁ Distributed busbar protection REB500 including line and transformer protection Product Guide.

⦁ Distributed Multifunction Fault Recorder.

⦁ A Distributed PMU for Electrical Substations With Wireless Redundant Process Bus.

⦁ Duplicate and Circulating Frames Discard Methods for PRP and HSR (IEC62439-3).

⦁ Dynamic Testing of an IEC 61850 Based 110 kV Smart Substation Solution.

⦁ EC 61850 for Substations.

⦁ ECT Evaluation by an Error Measurement System According to IEC 60044-8 and 61850-9-2.

⦁ Efficient Energy Automation with the IEC 61850 Standard Application Examples Energy Automation.

⦁ Emerging Applications of Synchronous Ethernet in Telecommunication Networks.

⦁ Enabling digital substations.

⦁ Energy Management of Internet Data Centers in Smart Grid.

⦁ Engineering Prespetive on IEC 61850.

⦁ Enhanced Engineering process SCL example.

⦁ Enhanced Engineering process SCL Files.

⦁ ERL 61850 IED Configurator.

⦁ ERL 61850 IED Configurator.

⦁ Ethernet & IEC 61850 Concepts, Implementation, Commissioning.

⦁ Ethernet in SAS.

⦁ Ethernet in SAS.

⦁ Ethernet in Substation Automation Applications – Issues and Requirements.

⦁ Ethernet Module EN100 for IEC 61850 with electrical/optical 100 MBit Interface Application Examples.

⦁ Ethernet Networks Redundancy With Focus On IEC 61850 Applications.


⦁ Ethernet-Based Public Communication Services: Challenge and Opportunity.

⦁ Evaluation of IEC 61850-9-2 Samples Loss on Total Vector Error of an Estimated Phasor.

⦁ The Evaluation of Phasor Measurement Units and Their Dynamic Behavior Analysis.

⦁ Evaluation of Time Gateways for Synchronization of Substation Automation Systems.

⦁ Executive Summary (Introduction to MMS.

⦁ Feeder Protection and Control REF615 Application Manual.

⦁ Focus on the application – IEC 61850 experience with third-party system configuration tool.

⦁ Generic IEC61850 IED Connectivity Package User‘s Guide.

⦁ Get on the digital bus to SA.


⦁ GOOSE Configuration Example.

⦁ Goose messages for automated testing: 765 kV transmission network.

⦁ Goose Messaging Determining its potential in a real case.

⦁ GOOSER IEC 61850 Test System.

⦁ GPS and IEEE 1588 synchronization for the measurement of synchrophasors in electric power systems.

⦁ Grid Automation REC615 and RER615 IEC 61850 Engineering Guide.

⦁ HardFiber.

⦁ Hidden Challenges in the Implementation of 61850 in Larger Substation Automation Projects.

⦁ IEC60076.

⦁ iec61850-8-1{ed1.0}en-2004.

⦁ IEC61850 Based Process Bus Protection Solution for Remote Located Power Transformers.

⦁ IEC61850 Modeling for Switch Management.

⦁ IEC 60870-5-101/104 Slave Technical.

⦁ IEC 60870-5-103 Communication Protocol Manual.

⦁ IEC 61400-25-2.

 IEC 61850-3 and IEEE 1588.

⦁ IEC 61850-7-420 IEC 61850 Part 7-420 DER Logical Nodes.

⦁ IEC 61850-9-2 Based Process Bus.

⦁ IEC 61850-9-2 Process Bus and Its Impact on Power System Protection and Control Reliability.

⦁ IEC 61850-9-2 Process Bus Communication Interface for Light Weight Merging Unit Testing Environment.

⦁ IEC 61850 – Communication networks and systems in substations.

⦁ IEC 61850 – More Than Just GOOSE: A Case Study of Modernizing Substations in Namibia.

⦁ IEC 61850  Process Bus – It is Real!.


⦁ IEC 61850 and Measurements.

⦁ IEC 61850 -Communication Networks and Systems in Substations:An Overview of Computer Science.

⦁ IEC 61850 driver FAQ.

⦁ IEC 61850 Enabled Automatic Bus Transfer Scheme for Primary Distribution Substations.

⦁ IEC 61850 General.

⦁ IEC 61850 GOOSE and IEEE C37.118 Synchrophasors Used for Wide-Area Monitoring and Control, SPS, RAS, and Load and Generation Management.

⦁ IEC 61850 Goose applications to distribution protection schemes.

⦁ IEC 61850 Goose applications to distribution protection schemes.

⦁ IEC 61850 MMS Client Driver Help.

⦁ IEC 61850 Model Expansion Toward Distributed Fault Localization, Isolation, and Supply Restoration.

⦁ IEC 61850 Process Bus – It is Real!.


⦁ IEC 61850 Protocol API User Manual.

⦁ IEC 61850 Qualifications.

⦁ IEC 61850 standard for SA.

⦁ The IEC 61850 standard for SA.

⦁ IEC 61850 standard for SA.

⦁ IEC 61850 Substation Configuration Language and Its Impact on the Engineering of Distribution Substation Systems.

⦁ IEC 61850 System Configurator.

⦁ IEC 61850 System Configurator.

⦁ IEC 61850 Technical Overview.

⦁ IEC 61850/61400 Model Designer.

⦁ IEC 61850: Role of Conformance Testing in Successful Integration.


⦁ IEC 61850-Based Feeder Terminal Unit Modeling and Mapping to IEC 60870-5-104.

⦁ IEC 61850-Based Information Model and Configuration Description of Communication Network in Substation Automation.

⦁ IEC 62357: TC57 Architecture Part 1: Reference Architecture for Power System Information Exchange.

⦁ IEC 62439 PRP: Bumpless Recovery for Highly Available, Hard Real-Time Industrial Networks.

⦁ IEC Smart Grid Standardization Roadmap.

⦁ IED Configuration Guidelines.

⦁ IEEE-1588 Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems.

⦁ IEEE 802.1AS and IEEE 1588.

⦁ IEEE 802.3ba 40 and100 Gigabit Ethernet Architecture.

⦁ IEEE 1547.2 IEEE Application Guide for IEEE Std 1547™, IEEE Standard for Interconnecting Distributed Resources with Electric Power Systems.

⦁ IEEE 1547.3 IEEE Guide for Monitoring, Information Exchange, and Control of Distributed Resources Interconnected with Electric Power Systems.

⦁ IEEE 1547.4 IEEE Guide for Design, Operation, and Integration of Distributed Resource Island Systems with Electric Power Systems.

⦁ IEEE 1547.6 IEEE Recommended Practice for Interconnecting Distributed Resources with Electric Power Systems Distribution Secondary Networks.

⦁ IEEE 1588.

⦁ IEEE 1588 Precision Time Protocol Time Synchronization Performance.

⦁ IEEE 1588 Precision Time Synchronization Solution for Electric Utilities.

⦁ IEEE 1588 Version 2.

⦁ IEEE 1615 IEEE Recommended Practice for Network Communication in Electric Power Substations.

⦁ IEEE Application Guide for IEEE Std 1547™, IEEE Standard for Interconnecting Distributed Resources with Electric Power Systems.”

{.pdf} IEEE c37.118.1 IEEE Standard for Synchrophasor Measurements for Power Systems.
{.pdf} IEEE c37.118.2 2011 IEEE Standard for Synchrophasor Data Transfer for Power Systems.
{.pdf} IEEE Recommended Practice for Network Communication in Electric Power Substations.
{.pdf} IEEE Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems.
{.pdf} IEEE Standard for Electric Power Systems Communications— Distributed Network Protocol (DNP3).
{.pdf} IEEE Standard for Ethernet.
{.pdf} IEEE Standard for Ethernet.
{.pdf} IEEE Standard for Ethernet Amendment 1: Physical Layer Specifications and Management Parameters for Extended Ethernet Passive Optical Networks.
{.pdf} IEEE Standard for Information technology— Telecommunications and information exchange between systems Local and metropolitan area networks— Specific requirements Part 17: Resilient packet ring (RPR) access method and physical layer specifications.
{.pdf} IEEE Standard for Service Interoperability in Ethernet Passive Optical Networks (SIEPON).
{.pdf} IEEE Standard for Synchrophasor Data Transfer for Power Systems.
{.pdf} IEEE Standard for Synchrophasor Measurements for Power Systems.
{.pdf} IEEE Standard Profile for Use of IEEE 1588™ Precision Time Protocol in Power System Applications.
{.pdf} IEEE Std 802.1.
{.pdf} Impact of IEC 61850-9-2 Standard-Based Process Bus on the Operating Performance of Protection IEDS: Comparative Study.
{.pdf} An Implementation of FTTH based Home Gateway Supporting Various Services.
{.pdf} Implementing New Generation Protective Relay Schemes based on IEC61850 Standard for Substation Communication in the Eskom 765kV Transmission Network.
{.pdf} Implementing Vehicle-to-Grid (V2G) Technology With IEC 61850-7-420.
{.pdf} Industrial & Plant Communication.
{.pdf} Industrial automation systems Manufacturing Message Specification.
{.pdf} Industrial Communication.
{.pdf} Installation and commissioning manual Line distance protection IED REL 670.
{.pdf} The Integrated Energy and Communication Systems Architecture.
{.pdf} Integration of a New Standard.
{.pdf} Integration of IEC 61850 GSE and Sampled Value Services to Reduce Substation Wiring.
{.pdf} Integration of IEC 61850 GSE and Sampled Value Services to Reduce Substation Wiring.
{.pdf} Interoperability and Performance Analysis of IEC61850 Based Substation Protection System.
{.pdf} Interoperability Requirements for IEC 61850 System Configuration Tools.
{.pdf} Introduction and Overview of IEC 61850 Configuration and Diagnostics.
{.pdf} IP and Ethernet Communication Technologies and Topologies for IED networks.
{.pdf} Issues and Approaches on Extending Ethernet Beyond LANs.
{.pdf} Kalki SCL Manager.
{.pdf} Laboratory Investigation of IEC 61850-9-2-Based Busbar and Distance Relaying With Corrective Measure for Sampled Value Loss/Delay.
{.pdf} Large Scale Grid Integration of Renewable Energy Sources – Way Forward.
{.pdf} Leading the way to Digital Substations.
{.pdf} Lecture 5a Substation Automation Systems.
{.pdf} Logical nodes.
{.pdf} Magnum 6KL Managed Edge Switch.
{.pdf} Memory Requirements Analysis for PRP and HSR Hardware Implementations on FPGAs.
{.pdf} MiCOM Px4x-92LE Technical Manual IEC 61850-9-2LE Interface.
{.pdf} MiCOM Px4x-92LE Technical Manual IEC 61850-9-2LE Interface.
{.pdf} Model Implementation Conformance Statement (MICS) for IEC 61850 for the SEL Real-Time Automation Controllers.
{.pdf} Model Implementation Conformance Statement for the IEC 61850 interface in SEL-351A.
{.pdf} Model Implementation Conformance Statement for the IEC 61850 interface in SEL-351S.
{.pdf} Model Implementation Conformance Statement for the IEC 61850 interface in SEL-2411.
{.pdf} Model Implementation Conformance Statement for the IEC 61850 interface in SEL-2440.
{.pdf} Modeling and (Co-)simulation of power systems, controls, and components for analysing complex energy systems.
{.pdf} Modeling and Simulation for Performance Evaluation of IEC61850-Based Substation Communication Systems.
{.pdf} The move to IEC61850  what and when will it be delivered?.
{.pdf} MU.
{.pdf} MU320 Merging Unit.
{.pdf} MU Agile AMU Technical Manual Analogue Merging Unit.
{.pdf} Network Interactions and Performance of a Multifunction IEC 61850 Process Bus.
{.pdf} A network scheme for process bus in smart substations without using external synchronization.
{.pdf} A New IED With PMU Functionalities For Electrical Substations.
{.pdf} Next-generation substations.
{.pdf} Non-conventional instrument transformers Advanced GIS substations with IEC 61850-9-2 LE process bus.
{.pdf} A Novel Communication Network for Three-Level Wide Area Protection System.
{.pdf} Object Modeling of Data and DataSets in the International Standard IEC 61850.
{.pdf} Offprint of an article published in PAC World, Fall 2008 Standard IEC 61850 – Network Redundancy using IEC 62439.
{.pdf} On the Use of IEEE 1588 in Existing IEC 61850-Based SASs: Current Behavior and Future Challenges.
{.pdf} One-Way Delay and PTP (IEEE 1588v2) Test Applications.
{.pdf} Optimal Integration of Disparate C37.118 PMUs in Wide-Area PSS With Electromagnetic Transients.
{.pdf} Overview of IEC 61850.
{.pdf} Overview of IEC 61850.
{.pdf} Packet Tracer Network Simulator.
{.pdf} The Parallel Redundancy Protocol for Industrial IP Networks.
{.pdf} Performance Analysis of IEC 61850 Sampled Value Process Bus Networks.
{.pdf} Performance assessment of an IEC 61850-9-2 based protection scheme for the mesh corner of a 400kV transmission substation.
{.pdf} Performance Evaluation of Time-critical Communication Networks for Smart Grids based on IEC 61850.
{.pdf} Performance of IEC 61850-9-2 Process Bus and Corrective Measure for Digital Relaying.
{.pdf} Phasor measurement based on IEC 61850-9-2 and Kalman–Filtering.
{.pdf} Plan Ahead for Substation Automation.
{.pdf} Plc based sa and SCADA.
{.pdf} Plug-in rapid-wire integrated.
{.pdf} pmu.
{.pdf} A PMU for the Measurement of Synchronized Harmonic Phasors in Three-Phase Distribution Networks.
{.pdf} The PMU Interface using IEC 61850.
{.pdf} PMU Interoperability, Steady-State ,and Dynamic Performance Tests.
{.pdf} PMU-based Voltage Instability Detection through Linear Regression.
{.pdf} Power network telecommunication PowerLink – power line carrier system.
{.pdf} Power network telecommunication PowerLink – technical data.
{.pdf} Power network telecommunication SWT 3000 Teleprotection.
{.pdf} The power of IEC 61850.
{.pdf} The power of IEC 61850.
{.pdf} Power Systems Communications.
{.pdf} a practical application primer for protection engineers.
{.pdf} Practical Applications of Ethernet in Substations and Industrial Facilities.
{.pdf} Practical Considerations for Ethernet Networking Within Substations.
{.pdf} Practical Experience with IEEE 1588 High Precision Time Synchronization in Electrical Substation based on IEC 61850 Process Bus.
{.pdf} Precision Clock Synchronization.
{.pdf} Precision Time Protocol.
{.pdf} Protection and Control System Upgrade Based on IEC- 61850 and PRP.
{.pdf} Protocol Implementation Conformance Statement (PICS) for IEC 61850 for the SEL Real-Time Automation Controllers.
{.pdf} PRP and HSR for High Availability Networks in Power Utility Automation: A Method for Redundant Frames Discarding.
{.pdf} PRP and HSR Version 1 (IEC 62439-3 Ed.2), Improvements, and a Prototype Implementation.
{.pdf} The Real-Time Publisher/Subscriber Communication Model for Distributed Substation Systems.
{.pdf} Reason RT411 Technical Manual Time Signal Distributor.
{.pdf} Redundancy in Substation LANs with the Rapid Spanning Tree Protocol (IEEE 802.1w).
{.pdf} Reliable data networks for electric power systems.
{.pdf} Requirements for Ethernet Networks in Substation Automation.
{.pdf} Resilience technologies in Ethernet.
{.pdf} SA Hand Book.
{.pdf} SAM600 process bus.
{.pdf} The SAM600 process bus IO system integrates conventional instrument transformers into modern, IEC 61850-9-2

⦁ process bus substation automation, protection, and control systems..

{.pdf} Sampled Values.
{.pdf} SAS Application pictures.
{.pdf} SCADA and IP.
{.pdf} SCADA Systems: Challenges for Forensic Investigators.
{.pdf} Seamless redundancy.
{.pdf} Selecting, Designing, and Installing Modern Data Networks in Electrical Substations.
{.pdf} Selection Guide / Ethernet Switches.
{.pdf} Sepam Ethernet Guide.
{.pdf} Sepam IEC 61850 communication.
{.pdf} SICAM A8000 Serie CP-8000 Master Modul mit I/O.
{.pdf} SICAM A8000 Series.
{.pdf} SICAM A8000 Series  Wherever energy flows Protection Technology / Substation Automation / Power Quality and Measurements.
{.pdf} SICAM A8000 Series CP-8000, CP-8021, CP-8022 User Manual.
{.pdf} SICAM A8000 Series Operation, telecontrol, and automation in the smallest spaces.
{.pdf} Simulation and testing of the over-current protection system based on IEC 61850 Process-Buses and dynamic estimator.
{.pdf} Simulation of Parallel Redundant WLAN with OPNET.
{.pdf} SINEAX CAM Parameterization of IEC61850 bus card.
{.pdf} SIPROTEC 4, SIPROTEC easy, SIPROTEC 600 Series, Communication, Accessories.
{.pdf} SIPROTEC 5 Communication protocol IEC 60870-5-103.
{.pdf} SIPROTEC 5 Communication Protocol IEC 60870-5-104.
{.pdf} SIPROTEC 5 Communication protocol IEC 61850.
{.pdf} SIPROTEC 5 Modbus.
{.pdf} SIPROTEC 5 Process Bus.
{.pdf} SIPROTEC 5Communication protocol DNP3.
{.pdf} SIPROTEC 7SC805.
{.pdf} SIPROTECMerging Unit 6MU805 V4.01 Manual.
{.pdf} smart grids.
{.pdf} The Smart Substatiion usiing IIEC 61850 Ediitiion 2.
{.pdf} Solutions for Digital Substation.
{.pdf} Stand Alone Merging Unit User Guide MGU010000.
{.pdf} A Study on GOOSE Communication based on lEC 61850 using MMS Ease Lite.
{.pdf} Substation Automation Process Bus.
{.pdf} Substation Automation Systems.
{.pdf} A Survey of Communication Network Paradigms for Substation Automation.
{.pdf} A Survey of Ethernet LAN Security.
{.pdf} Switchgear Optimization Using IEC 61850-9-2 and Non-Conventional Measurements.
{.pdf} Synchronized Phasor Measurements and Their Applications.
{.pdf} Synchrophasor Standards Development – IEEE C37.118 & IEC 61850.
{.pdf} System 800xA IEC 61850 Connect Configuration.
{.pdf} System 800xA IEC 61850 Engineering Workflow.
{.pdf} System Engineer Configures IEC 61850 Gateway to DNP3 Substation.
{.pdf} System-Level Tests of Transformer Differential Protection Using an IEC 61850 Process Bus.
{.pdf} TCP/IP Protocol Suite.
{.pdf} Technical Requirements for DER Integration Architectures.
{.pdf} Teleprotection over an IP/MPLS Network.
{.pdf} Testing a SIPROTEC GOOSE bus protection scheme using an OMICRON CMC.
{.pdf} Time Signal Distributor.
{.pdf} Time Signal Distributor.
{.pdf} Time Synchronization (IEEE 1588) and Seamless Communication Redundancy (IEC 62439-3) Techniques for Smart Grid Substations.
{.pdf} Time Synchronized Low-Voltage Measurements for Smart Grids.
{.pdf} Towards Implementation of IEC 61850 GOOSE Messaging in Event-Driven IEC 61499 Environment.
{.pdf} Traffic Generation of IEC 61850 Sampled Values.
{.pdf} Transforming Critical Communications Networks for Substation Automation Communications network infrastructure requirements and architectures.
{.pdf} Two Improvements Related to Overcurrent Functions for Bus Protection in Distribution Systems.
{.pdf} Use of IEEE 1588–2008 for a Sampled Value Process Bus in Transmission Substations.
{.pdf} Use of Precision Time Protocol to Synchronize Sampled-Value Process Buses.
{.pdf} User Experiences Implementing IEC61850 in Intelligent Electronic Devices.
{.pdf} A user-friendly implementation of IEC 61850 in a new generation of protection and control devices.
{.pdf} Using OPNET to Model and Evaluate the MU Performance Based on IEC 61850-9-2LE.
{.pdf} Utilization of GOOSE in MV Substation.
{.pdf} Utilizing IEC 61850, Ethernet, and IP Standards for Integrated Substation Communications.
{.pdf} VAMP RELAYS IEC 61850 interface Configuration instructions.
{.pdf} The Virginia Tech Calibration System.
{.pdf} Virtual Power Plant for Grid Services using IEC 61850.
{.pdf} VSE 006 IEC 61850 interface module.
{.pdf} VSE 006 IEC 61850 interface module Configuration instructions.
{.pdf} A Web-Based Remote Access Laboratory Using SCADA.
{.pdf} What Is IEC 61850?.
{.pdf} What Protection Engineers Need to Know About Networking.
{.pdf} White Paper on Standards for DER Communications Using IEC 61850.
{.pdf} Wide area voltage protection.
{.pdf} Wide-Area Ethernet Network Configuration for System Protection Messaging.
{.pdf} Wide-Area Ethernet Network Configuration for System Protection Messaging.
{.pdf} Wide-Area Protection and Power System Utilization.
{.pdf} (2003). “Communication networks and systems in substations – Part 1: Introduction and overview.”
{.pdf} (2003). “Communication networks and systems in substations – Part 2: Glossary.”
{.pdf} (2003). “Communication networks and systems in substations – Part 3: General requirements.”
{.pdf} (2003). “Communication networks and systems in substations – Part 4: System and project management.”
{.pdf} (2003). “Communication networks and systems in substations – Part 5: Communication requirements for functions and device models.”
{.pdf} (2003). “COMMUNICATION NETWORKS AND SYSTEMS IN SUBSTATIONS Part 10: Conformance Testing.”
{.pdf} (2003). “IEEE Standard Test Method for Use in the Evaluation of Message Communications Between Intelligent Electronic Devices in an Integrated Substation Protection, Control, and Data Acquisition System.”
{.pdf} (2005). “Communication networks and systems in substations – Part 7-3: Basic communication structure for substation and feeder equipment – Common data classes.”
{.pdf} (2005). “Communication networks and systems in substations – Part 7-4: Basic communication structure for substation and feeder equipment – Compatible logical node classes and data classes.”
{.pdf} (2005). “Communication networks and systems in substations – Part 9-1: Specific Communication Service
{.pdf} Mapping (SCSM) – Sampled values over a serial unidirectional multidrop point to point link.”
{.pdf} (2007). “Communication networks and systems in substations – Part 7-1: Basic communication structure for substation and feeder equipment – Principles and models.”
{.pdf} (2009). “Communication networks and systems for power utility automation – Part 7-420: Basic communication structure – Distributed energy resources logical nodes.”
{.pdf} (2010). “Communication networks and systems for power utility automation – Part 7-2: Basic information and communication structure – Abstract communication service interface (ACSI).”
{.pdf} (2010). “Communication networks and systems for power utility automation – Part 90-1: Use of IEC 61850 for the communication between substations.”
{.pdf} (2011). “Communication networks and systems for power utility automation – Part 8-1: Specific communication  service mapping (SCSM) – Mappings to MMS (ISO 9506-1 and ISO 9506-2) and to ISO/IEC 8802-3.”
{.pdf} (2011). “Communication networks and systems for power utility automation – Part 9-2: Specific communication service mapping (SCSM) – Sampled values over ISO/IEC 8802-3.”
{.pdf} (2012). “Communication networks and systems for power utility automation – Part 6: Configuration description language for communication in electrical substations related to IEDs.”
{.pdf} (2012). “Communication networks and systems for power utility automation – Part 90-5: Use of IEC 61850 to transmit synchrophasor information according to IEEE C37.118.”
{.pdf} (2013). “Communication networks and systems for power utility automation – Part 90-7: Object mdels for power converters in distributed energy resources (DER) systems.”
{.pdf} (2013). “IEEE c37.242 IEEE Guide for Synchronization, Calibration, Testing, and Installation of Phasor Measurement Units (PMUs) for Power System Protection and Control.”
{.pdf} (2014). “IEEE Recommended Practice for Network Communication in Electric Power Substations.”
{.pdf} on an electric power substation Internet protocol (IP) network are provided. For the power
{.pdf} engineer new to IP networking, this document provides an introduction to the concepts that need
{.pdf} to be mastered as well as specific recommendations to follow when deploying the technologies.
{.pdf} For equipment manufacturers and system integrators, it provides direction and requirements to
{.pdf} facilitate interoperable electric utility information networks
{.pdf} Ali, I., and M. S. Thomas (2011). GOOSE based protection scheme implementation &amp; testing in a laboratory. Innovative Smart Grid Technologies (ISGT), 2011 IEEE PES.
{.pdf} Almas, M. S., et al. (2014). Synchrophasor network, laboratory, and software applications developed in the STRONg<sup>2</sup>rid project. PES General Meeting | Conference & Exposition, 2014 IEEE.
{.pdf} Antonova, G., et al. (2011). Communication redundancy for substation automation. Protective Relay Engineers, 2011 64th Annual Conference for.
{.pdf} Apostolov, A., et al. (2006). A Distributed Recording System Based on IEC 61850 Process Bus. Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources, 2006. PS ’06.
{.pdf} Apostolov, A. and B. Vandiver (2011). IEC 61850 GOOSE applications to distribution protection schemes. Protective Relay Engineers, 2011 64th Annual Conference for.
{.pdf} Astarloa, A., et al. (2013). System-on-Chip implementation of Reliable Ethernet Networks nodes. Industrial Electronics Society, IECON 2013 – 39th Annual Conference of the IEEE.
{.pdf} Atienza, E. (2010). Testing and troubleshooting IEC 61850 GOOSE-based control and protection schemes. Protective Relay Engineers, 2010 63rd Annual Conference for.
{.pdf} Bhardwaj, V., et al. (2014). A review of various standards for digital substation. Green Computing Communication and Electrical Engineering (ICGCCEE), 2014 International Conference on.
{.pdf} Bonfiglio, A., et al. (2013). The smart microgrid pilot project of the University of Genoa: Power and communication architectures. AEIT Annual Conference, 2013.
{.pdf} Castello, P., et al. (2014). Improving the availability of distributed PMU in electrical substations using wireless redundant process bus. Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2014 IEEE International.
{.pdf} Chao, Z., et al. (2009). An integrated PMU and protection scheme for power systems. Universities Power Engineering Conference (UPEC), 2009 Proceedings of the 44th International.
{.pdf} Dan, Z., et al. (2010). A new scheme of control and protection based on utilizing phasor measurement technique. Control and Decision Conference (CCDC), 2010 Chinese.
{.pdf} Darby, A. B., et al. (2014). Experience using PRP Ethernet redundancy for Substation Automation Systems. Developments in Power System Protection (DPSP 2014), 12th IET International Conference on.
{.pdf} Das, N., et al. (2013). Process-to-bay level peer-to-peer network delay in IEC 61850 substation communication systems. Power Engineering Conference (AUPEC), 2013 Australasian Universities.
{.pdf} De Dominicis, C. M., et al. (2010). Experimental evaluation of synchronization solutions for substation automation systems. Instrumentation and Measurement Technology Conference (I2MTC), 2010 IEEE.
{.pdf} Dolezilek, D. (2010). Case Study Examples of Interoperable Ethernet Communications within Distribution, Transmission, and Wide-Area Control Systems. Communications Workshops (ICC), 2010 IEEE International Conference on.
{.pdf} Dutra, C. A., et al. (2014). Process bus reliability analysis. Developments in Power System Protection (DPSP 2014), 12th IET International Conference on.
{.pdf} Feuerhahn, S., et al. (2011). Comparison of the communication protocols DLMS/COSEM, SML, and IEC 61850 for smart metering applications. Smart Grid Communications (SmartGridComm), 2011 IEEE International Conference on.
{.pdf} Gajic, Z., et al. (2010). Using IEC 61850 analog goose messages for OLTC control of parallel transformers. Developments in Power System Protection (DPSP 2010). Managing the Change, 10th IET International Conference on.
{.pdf} GE “Communiicatiion Protocolls.”
{.pdf} Georg, H., et al. (2013). Performance evaluation of time-critical communication networks for Smart Grids based on IEC 61850. Computer Communications Workshops (INFOCOM WKSHPS), 2013 IEEE Conference on.
{.pdf} Gonzalez-Redondo, M. J., et al. (2013). IEC 61850 GOOSE transfer time measurement in the development stage. Industrial Electronics (ISIE), 2013 IEEE International Symposium on.
{.pdf} Hakala-Ranta, A., et al. (2009). Utilizing possibilities of IEC 61850 and goose. Electricity Distribution – Part 1, 2009. CIRED 2009. 20th International Conference and Exhibition on.
{.pdf} Hoga, C. (2011). Seamless communication redundancy of IEC 62439. Advanced Power System Automation and Protection (APAP), 2011 International Conference on.
{.pdf} Huu-Dung, N., et al. (2014). An improved High-availability Seamless Redundancy (HSR) for dependable Substation Automation System. Advanced Communication Technology (ICACT), 2014 16th International Conference on.
{.pdf} Hyo-Sik, Y., et al. (2007). Communication Networks for Interoperability and Reliable Service in Substation Automation System. Software Engineering Research, Management & Applications, 2007. SERA 2007. 5th ACIS International Conference on.
{.pdf} Ingram, D. M. E., et al. (2011). Multicast traffic filtering for sampled value process bus networks. IECON 2011 – 37th Annual Conference on IEEE Industrial Electronics Society.
{.pdf} Ingram, D. M. E., et al. (2012). “Use of Precision Time Protocol to Synchronize Sampled-Value Process Buses.” Instrumentation and Measurement, IEEE Transactions on 61(5): 1173-1180.
{.pdf} Ingram, D. M. E., et al. (2013). “Network Interactions and Performance of a Multifunction IEC 61850 Process Bus.” Industrial Electronics, IEEE Transactions on 60(12): 5933-5942.
{.pdf} Janssen, M. C., et al. (2011). Bringing IEC 61850 and Smart Grid together. Innovative Smart Grid Technologies (ISGT Europe), 2011 2nd IEEE PES International Conference and Exhibition on.
{.pdf} Khan, R. H., et al. (2013). Pilot protection schemes over a multi-service WiMAX network in the smart grid. Communications Workshops (ICC), 2013 IEEE International Conference on.
{.pdf} Kirrmann, H., et al. (2011). Seamless and low-cost redundancy for substation automation systems (high availability seamless redundancy, HSR). Power and Energy Society General Meeting, 2011 IEEE.
{.pdf} Martin, K. E., et al. (2014). “An Overview of the IEEE Standard C37.118.2&#x2014;Synchrophasor Data Transfer for Power Systems.” Smart Grid, IEEE Transactions on 5(4): 1980-1984.
{.pdf} Mekkanen, M., et al. (2013). Reliability evaluation and comparison for next-generation substation function based on IEC 61850 using Monte Carlo simulation. Communications, Signal Processing, and their Applications (ICCSPA), 2013 1st International Conference on.
{.pdf} Mekkanen, M., et al. (2014). Analysis and methodology for measuring the IEC61850 GOOSE messages latency: Gaining interoperability testing. Computer Applications and Information Systems (WCCAIS), 2014 World Congress on.
{.pdf} Mo, J., et al. (2010). Evaluation of process bus reliability. Developments in Power System Protection (DPSP 2010). Managing the Change, 10th IET International Conference on.
{.pdf} Ouellette, D. S., et al. (2010). Using a real-time digital simulator to affect the quality of IEC 61850 GOOSE and sampled value data. Developments in Power System Protection (DPSP 2010). Managing the Change, 10th IET International Conference on.
{.pdf} Parikh, P., et al. (2013). Fault location, isolation, and service restoration (FLISR) technique using IEC 61850 GOOSE. Power and Energy Society General Meeting (PES), 2013 IEEE.
{.pdf} Ptaszynski, M., and P. Wronek (2014). Mikronika’s new solutions for power substations with the process of bus technology. Signals and Electronic Systems (ICSES), 2014 International Conference on.
{.pdf} Ransom, D. L., and C. Chelmecki (2014). “Using GOOSE Messages in a Main&#x2013; Tie&#x2013; Main Scheme.” Industry Applications, IEEE Transactions on 50(1): 17-24.
{.pdf} Selga, J. M., et al. (2013). “Solutions to the Computer Networking Challenges of the Distribution Smart Grid.” Communications Letters, IEEE 17(3): 588-591.
{.pdf} Seung-Ho, Y., et al. (2012). Performance analysis of IEC 61850 based substation. Advanced Communication Technology (ICACT), 2012 14th International Conference on.
{.pdf} Sichwart, N., et al. (2013). Transformer Load Tap Changer control using IEC 61850 GOOSE messaging. Power and Energy Society General Meeting (PES), 2013 IEEE.
{.pdf} Sidhu, T., et al. (2011). Configuration and performance testing of IEC 61850 GOOSE. Advanced Power System Automation and Protection (APAP), 2011 International Conference on.
{.pdf} Sidhu, T. S., et al. (2010). Packet scheduling of GOOSE messages in IEC 61850 based substation intelligent electronic devices (IEDs). Power and Energy Society General Meeting, 2010 IEEE.
{.pdf} Skendzic, V., and A. Guzma (2006). Enhancing Power System Automation Through the Use of Real-Time Ethernet. Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources, 2006. PS ’06.
{.pdf} Song, Y., et al. (2010). Analysis of the reliability of IED and GOOSE network in 500kV substation based on IEC61850 standard. Computer Application and System Modeling (ICCASM), 2010 International Conference on.
{.pdf} Sun, X., and M. Redfern (2011). Process Bus Configurations for Protection Schemes in the Digital Substation: IEC 61850. Universities’ Power Engineering Conference (UPEC), Proceedings of 2011 46th International.
{.pdf} Sykes, J., et al. (2006). Implementation and Operational Experience of a Wide Area Special Protection Scheme on the SRP System. Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources, 2006. PS ’06.
{.pdf} Thanos, D., et al. (2012). P&amp; C engineering concepts applied to cyber security of the power grid. Protective Relay Engineers, 2012 65th Annual Conference for.
{.pdf} Thomas, M. S., and I. Ali (2010). “Reliable, Fast, and Deterministic Substation Communication Network Architecture and its Performance Simulation.” Power Delivery, IEEE Transactions on 25(4): 2364-2370.
{.pdf} Viet Phong, T., et al. (2013). Real-time modeling and model validation of synchronous generator using synchrophasor measurements. North American Power Symposium (NAPS), 2013.
{.pdf} Xiaoqun, L., et al. (2011). Design and Realization of FTU Message Transmission Process Based on GOOSE Communication Mechanism. Intelligent Human-Machine Systems and Cybernetics (IHMSC), 2011 International Conference on.
{.pdf} Xiaosheng, L., et al. (2014). The research on reliability and real-time of the scheme of process layer GOOSE network in smart substation based on artificial cobweb topology structure. Power Electronics Conference (IPEC-Hiroshima 2014 – ECCE-ASIA), 2014 International.
{.pdf} Xiaosheng, L., et al. (2014). “A High-Reliability and Determinacy Architecture for Smart Substation Process-Level Network Based on Cobweb Topology.” Power Delivery, IEEE Transactions on 29(2): 842-850.
{.pdf} Yang, C.-W., et al. (2014). Towards the implementation of IEC 61850 GOOSE messaging in an event-driven IEC 61499 environment. Emerging Technology and Factory Automation (ETFA), 2014 IEEE.
{.pdf} Yang, L., et al. (2009). A synchronized event logger for substation topology processing. Power Engineering Conference, 2009. AUPEC 2009. Australasian Universities.
{.pdf} Yarza, J. M., and R. Cimadevilla (2014). Advanced tap changer control of parallel transformers based on IEC 61850 GOOSE service. T&D Conference and Exposition, 2014 IEEE PES.
{.pdf} Zhen, W., et al. (2014). Fault information and diagnosis modeling of on-line communication monitoring system for the digital substation. PES General Meeting | Conference & Exposition, 2014 IEEE.

Training Course on Practical IEC 61850, Contact Us

Click here to Download IEC 61850 Video training course (4 hours)

This course provides comprehensive coverage of IEC 61850 and will provide you with the tools and knowledge to tackle your next digital substation project with confidence.  



  • 7-layer communication model
  • Network topologies
  • Client/server concept
  • Publish/subscribe concept
  • Key features of IEC 61850
  • General functional requirements (Parts 3, 4 and 5)
  • Mapping of abstract data objects and services onto the Manufacturing Messaging Specification (MMS) (Part 8.1)
  • Mapping of Sample Measured Values onto ISO/IEC 8802-3 (IEEE 802.3/Ethernet)


  • Merging Units (MUs)
  • Station Bus
  • Process Bus


  • Physical Interfaces (10/100/1000 Mbps)
  • Media (copper, multi-mode fibre, single mode fibre)
  • Media access (full duplex vs. CSMA/CD)
  • MAC (L2) addressing: broadcasting, multicasting, unicasting
  • Frame (packet) structure
  • Bridges/switches
  • VLANs
  • Port-based vs. tagged VLANs
  • IEEE802.1p port prioritisation
  • IEEE802.1Q VLAN
  • Time synchronisation
  • Network redundancy
  • Parallel Redundancy Protocol (IEC 62439-3)
  • Basic routing concepts


  • Sampled Values (SV) multicast
  • Generic Object Oriented Substation Event (GOOSE)
  • GOOSE messages over L2
  • GOOSE messages over L3 (IEC 61850-90-5)
  • Generic Substation Status Event (GSSE)
  • Time Sync (SNTP/GPS/IRIG-B)
  • Application of and comparison between profiles


  • Abstract Communication Service Interface (ACSI)
  • Mapping of IEC61850 to MMS
  • Object mapping
  • Service mapping


  • Configuration of Sample Values
  • Configuration of GOOSE
  • Software tools


  • Documentation and process
  • Assessment process
  • Tools
  • Testing methods
  • Interpretation of Compliance Certificates


Practical exercises will include the following:

  • Set up and configure Ethernet infrastructure
  • Send and receive Sample Values
  • Send and receive GOOSE messgaes
  • Play and explanation of the recorded videos which is related to our lab experiment

Place of training:

This course will be held in your place.

Instructors: Dr. Saeed Roostaee

  • Contact at ””
  • Whatsapp: +98917303437524

Click here to Download IEC 61850 Video training course (4 hours)