GE P741

P74
x/EN PL/Na7
Programmable Logic
(PL)
7-
30
MiCOM P74
1, P742, P743
PL
Relay
DDB
No.
English Text Type Source Description
P742
207
CU->PU Signal
16
PSL Input Signal
PSL
Virtual Signal 16 from the CU to the PU via the
fibre optic
P742
235
Current Overflow
PSL Input Signal
Saturation
Fibre optic Maximum primary current encoding
exceeded
P742
263
Dead Zone Earth
PSL Input Signal
Local Protection
Fault in the dead zone on the neutral
P742
261
Dead Zone Fault
PSL Input Signal
Local Protection
Fault in the dead zone
P742
262
Dead Zone
Phase
PSL Input Signal
Local Protection
Fault in the dead zone on a phase
P742
248
Delta IA
PSL Input Signal
Saturation
Variation detected on phase A (not used)
P742
249
Delta IB
PSL Input Signal
Saturation
Variation detected on phase B (not used)
P742
250
Delta IC
PSL Input Signal
Saturation
Variation detected on phase C (not used)
P742
251
Delta IN
PSL Input Signal
Saturation
Variation detected on the neutral (not used)
P742
116
Ext. 3 ph Trip
PSL Output
Signal
PSL (50BF
protection)
External 3 phase Trip
Allows external protection to initiate breaker fail
(if enabled)
P742
122
Ext. CB Fail
PSL Output
Signal
PSL (50BF Backtrip
protection)
50BF Backtrip order from an other protection
P742
168
Ext. Retrip Ph A
PSL Input Signal
50BF Protection
Retrip of phase A due to an external trip
initiation of this phase (at tBF3)
P742
169
Ext. Retrip Ph B
PSL Input Signal
50BF Protection
Retrip of phase B due to an external trip
initiation of this phase (at tBF3)
P742
170
Ext. Retrip Ph C
PSL Input Signal
50BF Protection
Retrip of phase C due to an external trip
initiation of this phase (at tBF3)
P742
117
External Trip A
PSL Output
Signal
PSL (50BF
protection)
External 3 phase A Trip
Allows external protection to initiate breaker fail
(if enabled)
P742
118
External Trip B
PSL Output
Signal
PSL (50BF
protection)
External 3 phase B Trip
Allows external protection to initiate breaker fail
(if enabled)
P742
119
External Trip C
PSL Output
Signal
PSL (50BF
protection)
External 3 phase C Trip
Allows external protection to initiate breaker fail
(if enabled)
P742
468
Fault_REC_TRIG
FRT
PSL
Trigger for the Fault Recorder
P742
252
Fibre Com Error
PSL Input Signal
Relay Integrity
Fibre communication to the CU error
P742
253
Fibre Com Worn
PSL Input Signal
Relay Integrity
Warning: fibre communication to be changed
P742
470
Field Voltage Fail
PSL Input Signal
Relay Integrity
48V Field Voltage Failure
P742
343
Forced Mode ON
PSL Input Signal
Commissioning
When the forced positions of the CB and the
Isolators are used (during commissioning test)
P742
351
General Alarm
PSL Input Signal
Relay Integrity
General Alarm
P742
288
I> Any Trip
PSL Input Signal
Phase Overcurrent
Overcurrent Trip
P742
296
I> No Trip
PSL Input Signal
Phase Overcurrent
Complement of ddb 288
P742
176
I>1 Start A
PSL Input Signal
Phase Overcurrent
1st Stage Overcurrent Start A
P742
177
I>1 Start B
PSL Input Signal
Phase Overcurrent
1st Stage Overcurrent Start B
P742
178
I>1 Start C
PSL Input Signal
Phase Overcurrent
1st Stage Overcurrent Start C
P742
188
I>1 Timer Block
PSL Input Signal
PSL
Blocking of the 1
st
stage overcurrent time delay
P742
180
I>1 Trip
PSL Input Signal
Phase Overcurrent
1st Stage Overcurrent Trip 3 phase
P742
316
I>2 Block BB ON
PSL Input Signal
87BB protection
Fast external phase fault criterion to block the
connected zone enabled
P742
182
I>2 Start A
PSL Input Signal
Phase Overcurrent
2nd Stage Overcurrent Start A
P742
183
I>2 Start B
PSL Input Signal
Phase Overcurrent
2nd Stage Overcurrent Start B
P742
184
I>2 Start C
PSL Input Signal
Phase Overcurrent
2nd Stage Overcurrent Start C
P742
190
I>2 Timer Block
PSL Input Signal
PSL
Blocking of the 1
st
stage overcurrent time delay
P742
186
I>2 Trip
PSL Input Signal
Phase Overcurrent
2nd Stage Overcurrent Trip 3 phase
P742
228
I>BB Block Ph A
PSL Input Signal
Phase Overcurrent
Local overcurrent phase A to block the 87BB on
external fault
P742
229
I>BB Block Ph B
PSL Input Signal
Phase Overcurrent
Local overcurrent phase B to block the 87BB on
external fault
P742
230
I>BB Block Ph C
PSL Input Signal
Phase Overcurrent
Local overcurrent phase C to block the 87BB
on external fault
P742
314
I>BB Enabled
PSL Input Signal
Local protection
Overcurrent Local trip confirmation
P742
224
I>BB Start A
PSL Input Signal
Phase Overcurrent
Local overcurrent phase A Trip confirmation for
87BB or 50BF (CU) trip order
P742
225
I>BB Start B
PSL Input Signal
Phase Overcurrent
Local overcurrent phase B Trip confirmation for
87BB or 50BF (CU) trip order