- Trainer: Dr. Saeed Roostaee (Profile)
- Online
- Date: 19 and 20 August 2023
- Platform: Google Meet & Online player
- Last update: 6 August 2023
- Contact us
Course content:
- Basics of Synchronous and Asynchronous Motors
- Motor Nameplate
- Motor Connections
- Motor Faults, Faults, and Protection Functions
- Overview of the Motor Protection Functions
- Motor Overcurrent Protection
- Motor Earth fault protection
- Motor Overload protection
- Motor Voltage protection
- Negative Sequence Protection
- Motor Lock Rotor & Mechanical Jam protection
- Motor Undercurrent protection
Modern numerical motor relay protection technology must be sufficient to meet the protection requirements of any of the vast range of motor designs. A motor protection relay providing sufficient protection will have the following set of characteristics such as extended start relay protection, loss-of-load relay protection, number of starts limitation, stalling relay protection, short circuit relay protection, thermal relay protection, Earth fault relay protection, negative sequence current detection, winding RTD measurement/trip, under-voltage relay protection, auxiliary supply supervision, …
- 14 Speed Switch
- 27 Undervoltage*
- 37 (P,C) Underpower/Undercurrent
- 38 Bearing Temperature*
- 46 Current Unbalance
- 47 Phase Reversal
- 49P PTC Overtemperature*
- 49R RTD Thermal*
- 49T Thermal Model
- 50 (P,G,Q) Overcurrent (Phase, Ground, Neg. Seq.)
- 50P LR Locked Rotor
- 50P LJ Load Jam
- 50N Neutral Overcurrent
- 51 (P,G,Q) Time-Overcurrent (Phase, Residual, Neg. Seq.)
- 55 Power Factor*
- 59P Phase Overvoltage*
- 60 Loss-of-Potential*
- 66 Starts-Per-Hour
- 81 (O,U) Over-/Underfrequency
- 87 Current Differential*
- 90 (P,I,T) Load Control (Power, Current, Thermal Capacity)
- 50/51 Adaptive Overcurrent
- 85 RIO SEL Mirrored Bits® Communications
- DFR Event Reports—Motor Starts, Motor Operating
- Statistics
- ENV Optional SEL-2600 RTD Module*
- HMI Operator Interface
- LDP Load Data Profiling
- LGC SELogic® Control Equations
- MET Metering
- RTU Remote Terminal Unit
- SDTM Slip-Dependent AccuTrackTM Thermal Model
- SER Sequential Events Recorders
- Stator overload protection 49
- Starting time supervision, locked rotor protection 48
- Restart inhibit 66,49R
- Negative-sequence current protection I2> 46
- Thermal unbalanced-load protection I2 2(t) 46
- Temperature measurement 1 38
- Undercurrent protection 37
- Active-power protection (P<) 32U
- Sensitive ground-fault protection 59N,
- non-directional 51Ns
- directional 67Ns
- Overcurrent protection 50, 51
- Current-differential protection 87
- Undervoltage protection 27
- Overvoltage protection 59
- Underexcitation protection 40
- Rotor ground-fault protection 64R
- Frequency protection 81
- Circuit-breaker failure protection 50BF
- User-programmable logic (CFC)
- Control functionality
- Graphic display (large)
- Flexible interfaces
- Frequency operating range (10 Hz – 70 Hz)
- Operational measured values and
- functional measured values
- Three-phase non-directional overcurrent protection, low-stage PHLPTOC 3I> 51P-1
- Three-phase non-directional overcurrent protection, instantaneous stage PHIPTOC 3I>>> 50P/51P
- Non-directional earth-fault protection, low-stage EFLPTOC I0> 51N-1
- Non-directional earth-fault protection, high stage EFHPTOC I0>> 51N-2
- Non-directional earth-fault protection, instantaneous stage EFIPTOC I0>>> 50N/51N
- Directional earth-fault protection, low stage DEFLPDEF I0> -> 67N-1
- Directional earth-fault protection, high stage DEFHPDEF I0>> -> 67N-2
- Rotor earth-fault protection MREFPTOC Io>R 64R
- Negative-sequence overcurrent protection for machines MNSPTOC I2>G/M 46G/46M
- Phase-reversal protection PREVPTOC I2>> 46R
- Three-phase thermal overload protection for motors MPTTR 3Ith>M 49M
- Motor startup supervision STTPMSU Is2t n< 48,66,14,51LR Motor load jam protection JAMPTOC Ist> 51LR
- Emergency start ESMGAPC ESTART ESTART
- Loss of load supervision LOFLPTUC 3I< 37 High-impedance or flux-balance based differential protection for machines MHZPDIF 3dIHi>G/M 87GH/87MH
- Stabilized differential protection for machines MPDIF 3dI>G/M 87G/87M
- Three-phase overvoltage protection PHPTOV 3U> 59
- Three-phase undervoltage protection PHPTUV 3U< 27 Positive-sequence overvoltage protection PSPTOV U1> 47O+
- Positive-sequence Undervoltage protection PSPTUV U1< 47U+ Negative-sequence overvoltage protection NSPTOV U2> 47OResidual
- overvoltage protection ROVPTOV U0> 59G
- Reverse power/directional overpower protection DOPPDPR P> 32R/32O
- Frequency gradient protection DAPFRC df/dt> 81R
- Over frequency protection DAPTOF f> 81O
- Under frequency protection DAPTUF f< 81U Three-phase underexcitation protection UEXPDIS X< 40 Circuit breaker failure protection CCBRBRF 3I>/I0>BF 51BF/51NBF
- Tripping logic TRPPTRC I -> O 94
- Multipurpose analog protection MAPGAPC MAP MAP
- Bay control QCCBAY CBAY CBAY
- Interlocking interface SCILO 3 3
- Circuit breaker/disconnector control GNRLCSWI I <-> O CB/DC I <-> O CB/DC
- Circuit breaker DAXCBR I <-> O CB I <-> O CB
- Disconnector DAXSWI I <-> O DC I <-> O DC
- Local/remote switch interface LOCREM R/L R/L
- Single point control (8 signals) SPC8GGIO
- Double point indication DPGGIO
- Single point indication SPGGIO
- Generic measured value MVGGIO
- Logic Rotating Switch for function selection and LHMI presentation SLGGIO
- Selector mini switch VSGGIO
- Pulse counter for energy metering PCGGIO
- Event counter CNTGGIO
- Supervision and monitoring
- Runtime counter for machines and devices MDSOPT OPTS OPTM
- Circuit breaker condition monitoring SSCBR CBCM CBCM
- Fuse failure supervision SEQRFUF FUSEF 60
- Current circuit supervision CCRDIF MCS 3I MCS 3I
- Trip-circuit supervision TCSSCBR TCS TCM
- Station battery supervision SPVNZBAT U<> U<>
- Energy monitoring EPDMMTR E E
- Measured value limit supervision MVEXP
- Three-phase current measurement CMMXU 3I 3I
- Three-phase voltage measurement (phase-to-earth)
- VPHMMXU 3Upe 3Upe
- Three-phase voltage measurement (phase-to-phase) VPPMMXU 3Upp 3Upp
- Residual current measurement RESCMMXU I0 I0
- Residual voltage measurement RESVMMXU U0 U0
- Power monitoring with P, Q, S, power factor, frequency PWRMMXU PQf PQf
- Sequence current measurement CSMSQI I1, I2 I1, I2
- Sequence voltage measurement VSMSQI U1, U2 V1, V2
- Current Protection: Phase Overcurrent (67, 51, 50)
- Directional Control of Overcurrent Protection (67)
- Overcurrent Protection (50)
- Current Protection: Undercurrent (37)
- Phase Unbalance (46)
- Time Delayed Overcurrent Protection (51)
- Current Protection: Measured Earth Fault (50/51G)
- Directional Control of Measured Earth Fault Protection (67G)
- Measured Earth Fault Protection (50G)
- Time Delayed Measured Earth Fault Protection (51G)
- Current Protection: Derived Earth Fault (50/51N)
- Directional Control of Derived Earth Fault Protection (67N)
- Time Delayed Derived Earth Fault Protection (51N)
- High Impedance Restricted Earth Fault (87REF)
- Voltage Protection: NPS Overvoltage (47)
- Earth Fault Protection (50N)
- Voltage Protection: Under/Over Frequency (81)
- Power Protection – 32
- Sensitive Power Protection – 32S
- Break Capacity Limit (50BCL)
- Phase Reversal (46 PH REV)
- Temperature Monitoring
- CT Supervision (60CTS)
- Power Factor – 55
- Trip Circuit Supervision (74TCS)
- Close Circuit Supervision (74CCS)
- Circuit Breaker Failure (50BF)
