GE P742

Measurements and Recording
P74x/EN MR/N
a7
MiCOM P74
1, P742, P743
(MR) 8-
5
MR
VIEW RECORDS
Description
LCD Reference
IA diff Differential current of the check zone
IB diff Differential current of the check zone
IC diff Differential current of the check zone
IN diff Differential current of the check zone
IA bias Differential current of the check zone
IB bias Bias current of the check zone
IC bias Bias current of the check zone
IN bias Bias current of the check zone
Trip Zone Zone where fault is detected
Scheme Topology Zone linked to current nodes (for the 8 nodes)
Scheme Topology CT linked to current nodes (for the 8 nodes)
Select Maint.
Setting range from 0 to 9. This selects the required
maintenance report from the possible 10 that may be stored.
A value of 0 corresponds to the latest report and so on.
Maint. Text
Up to 16 Character description of the occurrence (refer to
following sections).
Maint. Type/Main Data
These cells are numbers representative of the occurrence.
They form a specific error code whi
ch should be quoted in
any related correspondence to Report Data.
Reset Indication
Either Yes or No. This serves to reset the trip LED
indications provided that the relevant protection element has
reset, to reset all LED and relays latched in the PSL, and to
reset the latched alarms.
2.2 “View Records” Column (P742 / P743)
VIEW RECORDS
Description
LCD Reference
Select Event
Setting range from 0 to 511. This selects the required event
record from the possible 512 that may be stored. A value of 0
corresponds to the latest event and so on.
Time & Date
Time & Date Stamp for the event given by the internal Real
Time Clock.
Event Text
Up to 16 Character description of the Event refer to following
sections).
Event Value
Up to 32 Bit Binary Flag or integer representative of the Event
(refer to following sections).
Select Fault
Setting range from 0 to 4. This selects the required fault
record from the possible 5 that may be stored. A value of 0
corresponds to the latest fault and so on.
The following cells show all the fault flags, protection starts,
protection trips, fault location, measurements etc. associated
with the fault, i.e. the complete fault record.
Active Group Active group when fault recorder starts
Faulted Phase Phase initiating fault recorder starts
Tripped Phase Phase tripped