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CHAPTER 7: MAINTENANCE
M4 Breaker monitor
350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
The status of the breaker trip and close coils, as well as the trip and close circuits, can be
monitored under MAINTENANCE > M4 BKR MONITOR. In the case where a breaker coil or
circuit fails, the relay will display the message "Unhealthy" for the corresponding coil.
Further information on the breaker is provided under BKR TRIP COUNTER, where the
350 stores the number of trips. The counter can be reset under M3 RESET COUNTERS >
RST BKR TRIP COUNT set to "Yes".
PATH:
MAINTENANCE > M4 BKR MONITOR
TRIP COIL
Healthy
Range: Healthy, Unhealthy
CLOSE COIL
Healthy
Range: Healthy, Unhealthy
BKR TRIP COUNTER
5
Range: 0 to 10000 trips
BKR ALARM COUNTER
5
Range: 0 to 10000 trips
LAST TRIP TIME
5
Range: 0 to 10000 ms
AVG TRIP TIME
5
Range: 0 to 10000 ms
LAST CLOSE TIME
5
Range: 0 to 10000 ms
AVG CLOSE TIME
5
Range: 0 to 10000 ms
LAST CHARGE TIME
5
Range: 0 to 60000 ms
AVG CHARGE TIME
5
Range: 0 to 60000 ms
M4 BREAKER MONITOR
7–15
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