GE P741

Programmable Logic
P74x/EN PL/N
a7
MiCOM P74
1, P742, P743
(PL) 7-
27
PL
Relay
DDB
No.
English Text Type Source Description
P742
346
CB Trip 3 ph
PSL Input Signal
50BF Protection
Triphase Circuit Breaker Trip from CU (Init
50BF TBF1 / TBF2), Logical OR of :
87BB, 50BF, Manual Trip Zone X
P742
347
CB Trip phase A
PSL Input Signal
50BF Protection
Phase A Circuit Breaker Trip (Init 50BF TBF3 /
TBF4), Logical OR of :
O/C Protection, External Trip A, External Trip
3ph
P742
348
CB Trip phase B
PSL Input Signal
50BF Protection
Phase B Circuit Breaker Trip (Init 50BF TBF3 /
TBF4), Logical OR of :
O/C Protection, External Trip B, External Trip
3ph
P742
349
CB Trip phase C
PSL Input Signal
50BF Protection
Phase C Circuit Breaker Trip (Init 50BF TBF3 /
TBF4), Logical OR of :
O/C Protection, External Trip C, External Trip
3ph
P742
351
General Alarm
PSL Input Signal
Relay Integrity
General Alarm
P742
352
CB Status Alarm
PSL Input Signal
Scheme Integrity
Indication of discrepancy between the 52a and
52b auxiliary contacts of the Circuit Breaker
P742
353
Man CB Cls Fail
PSL Input Signal
Scheme Integrity
Circuit Breaker Failed to Close
(after a manual/operator close command)
P742
354
Man CB Trip Fail
PSL Input Signal
Scheme Integrity
Circuit Breaker Failed to Trip
(after a manual/operator trip command)
P742
355
Ctrl Cls in Prog
PSL Input Signal
Commissioning
Control Close in Progress
The relay has been given an instruction to close
the circuit breaker, but the Manual Close timer
Delay has not yet finished timing out
P742
356
Control Close
PSL Input Signal
Commissioning
Control Close command to the circuit breaker.
Operates for a manual close command (menu,
SCADA)
P742
357
Control Trip
PSL Input Signal
Commissioning
Control Trip
Operator trip instruction to the circuit breaker,
via menu, or SCADA. (Does not operate for
protection element trips)
P742
358
Any Trip
PSL Input Signal
All Protections
Any Trip (Logical OR of ddbs:
0, 1, 2, 168, 169, 170, 171, 256, 261)
P742
362
RP1 Read Only
PSL Output
signal
PSL
All setting changes and most command/control
actions blocked for Rear Port 1.
P742
363
RP2 Read Only
PSL Output
signal
PSL
All setting changes and most command/control
actions blocked for Rear Port 2 (not used).
P742
376
87BB Fault Ph A
PSL Output
signal
PSL
87BB Phase Fault detected in phase A
P742
377
87BB Fault Ph B
PSL Output
signal
PSL
87BB Phase Fault detected in phase B
P742
378
87BB Fault Ph C
PSL Output
signal
PSL
87BB Phase Fault detected in phase C
P742
379
87BB Earth Fault
PSL Output
signal
PSL
87BB earth Fault detected
P742
428
LED Cond IN 1
LED_CON
PSL
Assignment of signal to drive LED 1 Red.
P742
435
LED Cond IN 8
LED_CON
PSL
Assignment of signal to drive LED 8 Red.
P742
436
Timer in 436
TIMERIN
PSL Timer Input
Input to Auxiliary Timer 1
P742
451
Timer in 451
TIMERIN
PSL Timer Input
Input to Auxiliary Timer 16
P742
452
Timer out 452
TIMEROUT
Timer Output
Output from Auxiliary Timer 1
P742
467
Timer out 467
TIMEROUT
Timer Output
Output from Auxiliary Timer 16
P742
468
Fault_REC_TRIG
FRT
PSL
Trigger for the Fault Recorder
P742
469
Battery Fail
PSL Input Signal
Relay Integrity
Front panel Battery Failure
P742
470
Field Voltage Fail
PSL Input Signal
Relay Integrity
48V Field Voltage Failure
P742
486
Backup Setting
PSL Input Signal
InterMiCOM
Backup setting Alarm
This is an alarm that is ON if any setting fail
during the setting changing process. If this
happens, the relay will use the last known good
setting.
P742
600
CBF I< Start A
PSL Output
Signal
50BF Protection
Phase A undercurrent CBF Dead Pole Start
P742
601
CBF I< Start B
PSL Output
Signal
50BF Protection
Phase B undercurrent CBF Dead Pole Start
P742
602
CBF I< Start C
PSL Output
Signal
50BF Protection
Phase C undercurrent CBF Dead Pole Start
P742
603
CBF I> Start A
PSL Output
Signal
50BF Protection
Phase A overcurrent CBF Dead Pole Start