GE P742

Measurements and Recording
P74x/EN MR/N
a7
MiCOM P74
1, P742, P743
(MR) 8-
15
MR
Menu Text Default Setting Explanation
Digital input 15 Trip 50BF zone 1 Trip 50BF zone 1 digital channel
Digital input 16 Trip 50BF zone 2 Trip 50BF zone 2 digital channel
Digital input 17 Trip 87BB zone 1 Trip 87BB zone 1 digital channel
Digital input 18 Trip 87BB zone 2 Trip 87BB zone 2 digital channel
Digital input 19 PU Error Lck z1 PU error blocks zone 1 digital channel
Digital Input 20 PU Error Lck z2 PU error blocks zone 2 digital channel
Digital Input 21 to 32 Unused
The digital channels may be mapped to any of the opto isolated inputs or output contacts,
in addition to a number of internal relay digital signals, such as protection starts, LEDs etc.
3.2 “Disturb recorder” column – Peripheral Unit P742 or P743
Menu Text Default Setting Explanation
Analog. Channel 1 I
A
Phase A analogue current input
Analog. Channel 2 I
B
Phase B analogue current input
Analog. Channel 3 I
C
Phase C analogue current input
Analog. Channel 4 I
N
Neutral analogue current input
Digital Input 1 Field Volt Fail Mains field voltage
Input 1 trigger No Trigger
Digital input 2 Any Trip Any Trip digital channel
Input 2 trigger Trigger L/H
Digital input 3 CB Closed CB Closed digital channel
Input 3 trigger No Trigger
Digital input 4 CB Fail Alarm CB Fail Alarm digital channel
Input 4 trigger No Trigger
Digital input 5 CB not available CB not available digital channel
Input 5 trigger No Trigger
Digital input 6 CBF Int Backtrip
CB Failure Internal Backtrip order digital
channel
Input 6 trigger Trigger L/H
Digital input 7 CBF Ext Backtrip
CB Failure External Backtrip order digital
channel
Input 7 trigger Trigger L/H
Digital input 8 Dead Zone Fault Dead Zone Fault digital channel
Input 8 trigger Trigger L/H
Digital input 9 Ext. CB Fail External CB Fail digital channel
Input 9 trigger Trigger L/H
Digital input 10 Ext. 3 ph Trip External 3 phase trip digital channel
Input 10 trigger Trigger L/H
Digital input 11 Internal Trip Internal Trip digital channel
Input 11 trigger Trigger L/H
Digital input 12 Q1 Closed Isolator 1 closed digital channel