GE P741

Programmable Logic
P74x/EN PL/N
a7
MiCOM P74
1, P742, P743
(PL) 7-
29
PL
Relay
DDB
No.
English Text Type Source Description
P742
128
CB Aux. B (52b)
PSL Output
Signal
PSL
52-B (CB open) CB Auxiliary Input (Phase B)
P742
129
CB Aux. C (52a)
PSL Output
Signal
PSL
52-A (CB closed) CB Auxiliary Input (phase C)
P742
130
CB Aux. C (52b)
PSL Output
Signal
PSL
52-B (CB open) CB Auxiliary Input (Phase C)
P742
332
CB Closed
PSL Input Signal
PSL
Circuit Breaker closed (not (CB Aux. (52b) AND
CB Aux. (52a)))
P742
333
CB Healthy
PSL Input Signal
PSL
Complement of ddb 121
P742
121
CB not available
PSL Output
Signal
PSL
Circuit Breaker is not available to trip
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
342
CB Status Forced
PSL Input Signal
Commissioning
CB status position forced open (by default) or
closed
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
289
CBAvailabToTrip
PSL Input Signal
Scheme Integrity
Complement of ddb 297
P742
173
CBF Ext Backtrip
PSL Input Signal
50BF Backtrip
Protection
Backtrip triphase due to a trip initiation (at tBF4)
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
P742
604
CBF I> Start B
PSL Output
Signal
50BF Protection
Phase B overcurrent CBF Dead Pole Start
P742
605
CBF I> Start C
PSL Output
Signal
50BF Protection
Phase C overcurrent CBF Dead Pole Start
P742
606
CBF I> Start N
PSL Output
Signal
50BF Protection
Neutral overcurrent CBF Dead Pole Start
P742
172
CBF Int Backtrip
PSL Input Signal
50BF Backtrip
Protection
Backtrip triphase due to a trip initiation from CU
(at tBF2)
P742
297
CBNotAvailToTri
p
PSL Input Signal
Scheme Integrity
Logical OR of ddb 121 and 270
P742
265
Config Error
PSL Input Signal
Relay Integrity
Configuration error
P742
266
Config Error
PSL Input Signal
Relay Integrity
Configuration error
P742
264
Config OK
PSL Input Signal
Relay Integrity
Correct configuration
P742
267
Config. Valid
PSL Input Signal
Scheme Integrity
Valid Setting configuration
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
306
Ctrl CB Close
PSL Input Signal
Manual
Functionality
Manual closing order of the Circuit Breaker
P742
305
Ctrl CB Trip
PSL Input Signal
Manual
Functionality
Manual Trip Order of the Circuit Breaker
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
192
CU->PU Signal
01
PSL Input Signal
PSL
Virtual Signal 01 from the CU to the PU via the
fibre optic