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Protection Relay c

07abb , 15:20 – abb pcm 600: Can any one assist me with a milliamps current multiplier circuit? My transducer is 5mA output and I need 20mA
07abb , 16:08 – abb pcm 600 “:
What you missed and upcoming webinar !
08abb , 12:18 – abb pcm 600: IMG-20200808-WA0005.jpg (file attached)

08abb , 12:19 – abb pcm 600: Any one help me ..while I connect sip 5 bcu like that error I got can I solve that
08abb , 12:20 – abb pcm 600″: Differential initial setting is 0.2*In?
08abb , 12:20 – abb pcm 600″: What is the meaning of it
10abb , 10:44 – abb pcm 600: anyone have software for communicate this relay with pc
11abb , 17:46 – abb pcm 600 “:
CT Testing Theory.pdf
11abb , 20:46 – abb pcm 600″: Anybody have breaker dcrm result & procedure for testing breaker dcrm with megger TM1740 kit.
11abb , 21:25 -abb pcm 600 “: i think the problem is your RAM
11abb , 21:25 -abb pcm 600 “: maybe you can upgrade it to 8gb or 16gb
12abb , 01:11 – Elec Engg: Hello everyone,
12abb , 10:56 -abb pcm 600: Immediate requirement of ABB Experienced SAS & RTU Engineers for TANZANIA project:
Job period: Minimum 6 months
12abb , 17:49 – abb pcm 600:
12abb , 17:49 – abb pcm 600: What is this problem?
12abb , 17:52 – abb pcm 600″: Install the device driver for 7sj80
12abb , 17:52 – abb pcm600: You need to install the 7sj80 device drive
13abb , 09:06 – abb pcm 600″: My breaker got tripped on differential
13abb , 09:07 – abb pcm 600″: Relay is not showing any current
13abb , 09:07 – abb pcm 600″: 87BD In phase R,Y,B
13abb , 09:07 – abb pcm 600″: But no current
13abb , 09:07 – abb pcm 600: W1 or W2
13abb , 09:08 – abb pcm 600″: Wait I am checking
13abb , 09:09 -abb pcm600: Its tap changing problem
13abb , 09:11 -abb pcm600: It is due to imbalance of voltage
13abb , 09:14 – abb pcm 600″: But how?
13abb , 09:18 – abb pcm 600″: Tap was not changed
13abb , 09:27 – abb pcm 600″: In relay 5th harmonic and 2nd harmonic is blocked
13abb , 10:05 – abb pcm 600″: Not showing any winding
13abb , 12:55 – abb pcm600: i just updated 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 device information page of offline extracted settings, here upgrade option is missing at configuration version, please guide how can i get upgrade option
13abb , 12:55 – abb pcm600: IMG-20200814-WA0003.jpg (file attached)

here you can see, upgrade option is not there near CFG
13abb , 12:56 – abb pcm600: IMG-20200814-WA0002.jpg (file attached)

this is what manual shows, but in my case this upgrade option is not there as you can see in above picture.
13abb , 12:56 – abb pcm600: Please help
13abb , 13:31 -abb pcm600: Are u import the communication firmware for this device?
13abb , 14:31 – abb pcm600: issue resolved, by following this “You can go to “Upgrade project device” in project tree, and you will find for upgrade CFG”
13abb , 16:45 – abb pcm600: IMG-20200814-WA0004.jpg (file attached)

13abb , 16:46 – abb pcm600: Getting this error when installing digsi 4.94, plz help
14abb , 11:51 – abb pcm 600″: When I am taking megger for pt primary to secondary, then when taking b/w primary and 1a and primary getting 400 Mega ohm, and primary to 1n getting 1.9 giga. Ohm why is the difference
14abb , 11:51 – abb pcm 600″: Can anyone tell me
14abb , 12:56 -abb pcm600: Hi, can someone please share Operation and Maintenance Manual of Feeder Remote Terminal Unit used to automate RMUs? Thanks..
14abb , 13:25 – abb pcm600: What is the applied test voltage
14abb , 13:25 – abb pcm 600″: 5kV
14abb , 14:07 – abb pcm600: Remove secondary connections either connected 1a or 1n. Apply test voltage case1: primary to 1a
Case 2: primary to 1n
14abb , 14:09 – abb pcm600: The values more or less should come same. Sometimes it will shows some difference due to testing machine (Megger) measurement and also ambient temparature(T)
14abb , 15:55 – abb pcm600:
14abb , 15:56 – abb pcm600: IN 7SR relay where to find Characteristic angle
14abb , 15:56 – abb pcm600: Using reydisp evolution
14abb , 17:16 – abb pcm 600: take pri. to earth at 5kv
and seco. to earth at 500 v
14abb , 19:03 – abb pcm600: Any body tested GIPAM 10NZ relay
14abb , 19:05 – abb pcm600: Where is direction selection for 67G SGR Protection
14abb , 19:06 – abb pcm600: In software
14abb , 19:06 – abb pcm600:
14abb , 19:59 – abb pcm 600″: Check in current protection folder
14abb , 20:00 – abb pcm 600″: +-45 by default
14abb , 20:01 – abb pcm600: Yes thank you, I found
14abb , 20:02 – abb pcm600: Any suggestions about this
14abb , 22:09 – abb pcm 600: any ziv zlv distance protection engineer urgent need
16abb , 13:23 – abb pcm600: Unbalance settings is given 30%
16abb , 13:24 – abb pcm600: How to test and justify this 30%
16abb , 15:20 – abb pcm600: How to Test 100% Stator Earth fault protection
16abb , 15:21 – abb pcm600: With 3rd Harmonic
16abb , 15:37 -abb pcm600: It is the power setting
16abb , 15:38 -abb pcm600: When u give the fault with power above 30% . Then only the relay will be active.
16abb , 15:38 – abb pcm600: OK thank you
16abb , 15:39 – abb pcm600: Please
16abb , 15:39 -abb pcm600: Which relay
16abb , 15:39 -abb pcm600: Model
16abb , 15:40 – abb pcm600: 7UM622
17abb , 14:10 – abb pcm 600″: Control cable length is 700mtr then how to calculate voltage drop
17abb , 14:11 – abb pcm 600″: Does anybody have an excel sheet
17abb , 15:50 – abb pcm 600: if 220 kv or any kv panel which recieving end panel thus their relationship angle between v-i is 180 degree apart.? is this right

18abb , 14:19 – abb pcm600: I am from India, kindly help me out getting a job in switchgear industry.
Please Circulate my Resume among your contacts.
18abb , 17:50 – abb pcm 600″:

Whatsapp +989129613659

18abb , 17:50 – abb pcm 600″: Vph to Vph selected
18abb , 17:50 – abb pcm 600″: Setting is 121 V
18abb , 17:50 – abb pcm 600″: Then for secondary injection how to inject
20abb , 08:24 – abb pcm600: How to test under excitation protection in Siemens relay
20abb , 08:24 – abb pcm600: 7UM
20abb , 12:41 -abb pcm600: U have to first take capability curve of generator and then on under excitation side make 3 part one at 0deg angle, 90deg angle and 120 deg angle
20abb , 12:42 -abb pcm600: For each angle u will get certain MW and Mvar which u can inject through ur secondary injection kit in terms of voltage and current
20abb , 20:00 -abb pcm600: 61850- ؟
21abb , 10:02 – abb pcm 600″:
Can anybody explain me this
21abb , 17:08 – abb pcm600: PTT-20200821-WA0004.opus (file attached)

21abb , 21:10 – abb pcm600: Can anyone provide DNP3 protocol standard?
22abb , 08:40 – Fatima:
22abb , 09:53 – abb pcm600:
22abb , 09:55 – abb pcm600: On upper side of Relay Ready LED is Blinking
22abb , 09:55 – abb pcm600: That’s why it’s not communicating by software, How to fix it
22abb , 10:28 – abb pcm 600: which led
22abb , 10:28 – abb pcm600: Ready LED
22abb , 10:29 – abb pcm 600: relay faulty indiction is going on annuc.
22abb , 10:32 – abb pcm600: No annunciation is coming on other
22abb , 10:33 – abb pcm 600: but i think relay get faulty
22abb , 10:33 -abb pcm600: Hi all, Please provide this.
22abb , 10:33 – abb pcm 600″: Is relay restarting again and again
22abb , 10:34 – abb pcm 600: any something error internl
22abb , 10:34 – abb pcm 600″: Is it in test mode
22abb , 10:34 – abb pcm 600″: Because it blinks when in test mode
22abb , 10:35 – abb pcm600: It’s not in test
22abb , 10:35 – abb pcm 600″: Is it rebooting
22abb , 10:36 – abb pcm 600: u can also check the error code in the relay
22abb , 10:37 – abb pcm600: Not rebooting
22abb , 10:37 – abb pcm 600: share the display
22abb , 10:37 – abb pcm 600: click the photo
22abb , 10:37 – abb pcm600: HMI working properly
22abb , 10:37 – abb pcm 600″: 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

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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

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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

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– 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

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– 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

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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.

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– 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.

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– 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.

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– 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

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    This topic block provides the information you need to quickly familiarize yourself with the newly designed DIGSI 5 user interface. It includes not only explanations of the basic structure of the user interface and how to adapt it to your requirements, but also information on working with projects and libraries.

  • Projects

    In this topic block, you find all the information for creating a project and for other actions that are necessary for working with projects.

  • Devices

    This topic block contains information about inserting offline configurations in the project for the SIPROTEC 5 devices. You find out how to configure the hardware of SIPROTEC 5 devices and how to generate display pages for them.

  • Single-Line Configuration

    In this topic block, you learn how to map a system as a single-line configuration using the single-line editor. With the symbol editor, you can also generate your own symbols for the single-line configuration.

  • Applications and functions

    The topics in this block describe how to configure the application for a SIPROTEC 5 device. For this purpose you will receive the necessary information to adjust the scope of functionality of a SIPROTEC 5 device, and to set a parameter to the project thereafter.

  • Signals

    This topic block provides an overview to signals such as measured values or commands. Additionally, you will receive information about other actions that are necessary for working with signals.

  • IEC 61850 Structure

    With the information in this topic block you find access to the IEC 61850 structure. You will find out how to access the structure and adjust it to meet your requirements.

  • Information Routing

    In this topic block, you will learn how to route information on device components, such as inputs and outputs on a buffer.

  • Function Charts (CFC)

    With CFC (Continuous Function Chart), you extend a SIPROTEC 5 device to add functions for interlockings, measured-value tasks, and other task cards. This topic block explains how to configure and then test CFC functions in function charts with complete function blocks. It also provides you with additional information on all function blocks.

  • Test Sequences

    The test sequences test the protection functions. This topic block provides the information for generating and editing test sequences.

  • Communication

    Besides describing general communication characteristics of SIPROTEC 5 devices, this topic block also tells you how to configure a communication connection and communicate with a SIPROTEC 5 device. Attention is focused particularly on communication in compliance with IEC 61850.

  • Commissioning and Operation

    In this topic block, you find information on all test and diagnostics functions of the DIGSI 5 Test suite and on the process data. The other topics discuss, for example, the transmission of configurations or updating the device function.

  • Export and Import

    The topics in this block provide you with all information on archiving, importing, and exporting data. It therefore provides you further with an insight into how to also make data available to other programs through the DIGSI 5 open interfaces.

  • Documentation

    DIGSI 5 includes an extensive documentation function. This topic block is therefore devoted to designing and printing the project documentation.

  • Properties

    This topic block informs you about global elements and characteristics that are not unique to one specific device type. For example, these can be communication settings or characteristics of library elements.

  • User Interface

    The descriptions of all user interface elements are grouped together in this topic block. Here, you find out all you need to know about editors, tabs in the task card, matrices, tables, various input, and selection areas and also dialogs and icon bars.

DIGSI 5 displays all editing tools such as the Function chart (CFC) editor or the Display editor within the working area. You use buttons in the object bar to switch between the open tools by clicking with the mouse.

You see the task card on the right-hand side of the user interface. This is where you find context-related tasks or functions. The Libraries task card has a special significance. The library contains a large number of elements that you can drag and drop into the project. Among other things, such elements can be function blocks for a function chart or also icons for equipment that you need for a single-line configuration or a display page.

Inspector and information cards will help you further if you are interested more in a specific element. Depending on the element selected, these windows immediately provide you with the suitable display and input options without any need to open any additional dialogs.

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DIGSI 5 manages the components of a system and all the data associated with it in relation to the project. Topology, SIPROTEC 5 devices, settings values, communication settings, process data and much more are grouped together and saved under a project name. In other words, you only open one project file to have access to all data. Conversely, all changes are saved simply by saving the project file.

Project Tree

The project tree is positioned on the left side of the user interface and is the central element when working with DIGSI 5. Its individual icons give you access to all data and tools. One double click each suffices, and you will display settings of protection functions, start actions such as loading firmware into SIPROTEC 5 devices or open one of the editors.

Working Offline and Online

There are 2 modes in DIGSI 5: offline and online

In the offline mode, entire data of a SIPROTEC 5 device to be edited is available in the files. There is no connection to a physically existing SIPROTEC 5 device. You can work with an offline configuration of a SIPROTEC 5 device. You can work in this mode to prepare the settings or to evaluate the stored process data. Validation of the text entered in DIGSI 5 while renaming any element is based on the number of characters and also on the number of pixels. If the entered text exceeds the allowed limit, an error message is displayed. You must resolve the inconsistencies to proceed further.

In the online mode, there is a physical connection between DIGSI 5 and a SIPROTEC 5 device. You work in this mode to transmit settings from DIGSI 5 to the SIPROTEC 5 device or to read process data of it, for instance.

In DIGSI 5, you can work with both modes in parallel. You can edit project data offline and at the same time monitor SIPROTEC 5 devices that can be accessed online.

The following list provides an overview of the tasks you can deal with, among others, in the offline mode:

  • Creating a topology as a single-line configuration

  • Incorporating SIPROTEC 5 devices into the topology

  • Configuring hardware of a SIPROTEC 5 device

  • Defining the functional scope of a SIPROTEC 5 device

  • Defining individual function settings

  • Routing information

  • Editing display pages

  • Configuring function charts (CFC)

  • Configuring the communication network and setting communication settings

  • Displaying saved measured values and indications

  • Displaying saved fault records and evaluating them with SIGRA

  • Exporting and printing data

  • Creating test sequences

The following list provides an overview of the tasks you can deal with, among others, in the online mode:

  • Transmitting settings values from DIGSI 5 to the SIPROTEC 5 device

  • Transmitting settings values from the SIPROTEC 5 device to DIGSI 5 and saving them in files

  • Transmitting indications, measured values, and fault records from the SIPROTEC 5 device to DIGSI 5 and saving them in files

  • Setting limiting values

  • Testing SIPROTEC 5 devices and functions

  • Controlling equipment

  • Initiating SIPROTEC 5 device starting or restarting

  • Setting the date and time of the SIPROTEC 5 device

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