GE 339

CHAPTER 7: MAINTENANCE M3 BREAKER MAINTENANCE
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 7–11
Figure 7-9: Close coil monitoring logic diagram
SETPOINT
RLY2 COIL FUNCTN: Disabled = 0
Latched Alarm
Event Recorder
Transient Recorder
Alarm
OR
OR
AND
SETPOINT:
Do Not Operate, Operate
OUTPUT RELAY X
Rly2 Coil Mn Alrm State: Operate
Message
Close Coil current above threshold
AND
OR
52a/b INPUTS
Breaker Open
Close
From output relay 2 CLOSE
SETPOINT
BYPASS BKR STATUS Enabled = 1
Disable = 0
AND
RLY2 COIL DELAY:
SETPOINT
t
PKP
LED: MAINTENANCE
Message
LED: ALARM
RESET
Command
AND
S R
LATCH
896787A1.cdr
Rly2 Coil Mn Alrm State: Pickup