GE P741

Programmable Logic
P74x/EN PL/N
a7
MiCOM P74
1, P742, P743
(PL) 7-
35
PL
Relay
DDB
No.
English Text Type Source Description
P743
187
IN>2 Trip
PSL Input Signal
Earth Fault
2nd Stage Earth Fault Trip
P742
188
I>1 Timer Block
PSL Input Signal
PSL
Blocking of the 1
st
stage overcurrent time delay
P742
189
IN>1 Timer Block
PSL Input Signal
PSL
Blocking of the 2
nd
stage earth fault time delay
P742
190
I>2 Timer Block
PSL Input Signal
PSL
Blocking of the 1
st
stage overcurrent time delay
P742
191
IN>2 Timer Block
PSL Input Signal
PSL
Blocking of the 2
nd
stage earth fault time delay
P743
192
CU->PU Signal
01
PSL Input Signal
PSL
Virtual Signal 01 from the CU to the PU via the
fibre optic
P743
207
CU->PU Signal
16
PSL Input Signal
PSL
Virtual Signal 16 from the CU to the PU via the
fibre optic
P743
208
Zone 8 Off
PSL Input Signal
CU Information
Zone 8 in commissioning mode or blocked
by a Circuitry fault or a PU error
P743
215
Zone 1 Off
PSL Input Signal
CU Information
Zone 1 in commissioning mode or blocked
by a Circuitry fault or a PU error
P743
216
Trip Zone 8
PSL Input Signal
CU Information
Trip of Zone 8 (87BB, 50BF or manual)
P743
223
Trip Zone 1
PSL Input Signal
CU Information
Trip of Zone 1 (87BB, 50BF or manual)
P743
224
I>BB Start A
PSL Input Signal
Phase Overcurrent
Local overcurrent phase A Trip confirmation for
87BB or 50BF (CU) trip order
P743
225
I>BB Start B
PSL Input Signal
Phase Overcurrent
Local overcurrent phase B Trip confirmation for
87BB or 50BF (CU) trip order
P743
226
I>BB Start C
PSL Input Signal
Phase Overcurrent
Local overcurrent phase C Trip confirmation for
87BB or 50BF (CU) trip order
P743
227
IN>BB Start
PSL Input Signal
Earth Fault
Local overcurrent Trip confirmation for the
neutral
P743
228
I>BB Block Ph A
PSL Input Signal
Phase Overcurrent
Local overcurrent phase A to block the 87BB on
external fault
P743
229
I>BB Block Ph B
PSL Input Signal
Phase Overcurrent
Local overcurrent phase B to block the 87BB on
external fault
P743
230
I>BB Block Ph C
PSL Input Signal
Phase Overcurrent
Local overcurrent phase C to block the 87BB on
external fault
P743
231
IN>BB Block
PSL Input Signal
Earth Fault
Local overcurrent earth to block the 87BB on
external fault
P743
232
Saturation ph A
PSL Input Signal
Saturation
Saturation on phase A
P743
233
Saturation ph B
PSL Input Signal
Saturation
Saturation on phase B
P743
234
Saturation ph C
PSL Input Signal
Saturation
Saturation on phase C
P743
235
Current Overflow
PSL Input Signal
Saturation
Fibre optic Maximum primary current encoding
exceeded
P743
236
Max Flux ph A
PSL Input Signal
Saturation
Maximum flux reached in the phase A CT
P743
237
Max Flux ph B
PSL Input Signal
Saturation
Maximum flux reached in the phase B CT
P743
238
Max Flux ph C
PSL Input Signal
Saturation
Maximum flux reached in the phase C CT
P743
239
Offset Chan
ABCN
PSL Input Signal
Saturation
Offset current read by the Analog board Phase
A, B, C or N
P743
240
Predict err ph A
PSL Input Signal
Saturation
Variation error phase A (derived current)
P743
241
Predict err ph B
PSL Input Signal
Saturation
Variation error phase B (derived current)
P743
242
Predict err ph C
PSL Input Signal
Saturation
Variation error phase C (derived current)
P743
244
Sat ADC ph A
PSL Input Signal
Saturation
Analog to Digital Converter of phase A current
saturated
P743
245
Sat ADC ph B
PSL Input Signal
Saturation
Analog to Digital Converter of phase B current
saturated
P743
246
Sat ADC ph C
PSL Input Signal
Saturation
Analog to Digital Converter of phase C current
saturated
P743
247
Sat ADC Neutral
PSL Input Signal
Saturation
Analog to Digital Converter of the neutral
current saturated
P743
248
Delta IA
PSL Input Signal
Saturation
Variation detected on phase A (not used)
P743
249
Delta IB
PSL Input Signal
Saturation
Variation detected on phase B (not used)
P743
250
Delta IC
PSL Input Signal
Saturation
Variation detected on phase C (not used)
P743
251
Delta IN
PSL Input Signal
Saturation
Variation detected on the neutral (not used)
P743
252
Fibre Com Error
PSL Input Signal
Relay Integrity
Fibre communication to the CU error
P743
253
Fibre Com Worn
PSL Input Signal
Relay Integrity
Warning: fibre communication to be changed
P743
254
Acq Error 3Io
PSL Input Signal
Relay Integrity
Sample acquisition error: 3 x Io <> In
P743
255
CT Fail IN
PSL Input Signal
Scheme Integrity
Internal PU CT failure
P743
256
Internal Trip
PSL Input Signal
Local Protection
Triphase Trip (87BB, 50BF(CU), I>, IN> or
manual zone trip (CU)).
Trip command directly applied to relay 1, 2, 3
(without PSL)
P743
257
Trip 87BB
PSL Input Signal
87BB Busbar
Protection
Busbar trip order (87BB), general information
common to all PUs, the PU can be connected
to an healthy zone
P743
258
Trip 87BB Locked
PSL Input Signal
Scheme Integrity
Busbar trip order blocked by the CU
commissioning mode or Circuitry fault
P743
259
Trip 50BF (CU)
PSL Input Signal
50BF Backtrip
Protection
Breaker fail trip order (50BF), general
information common to all PUs, the PU can be
connected to an healthy zone