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CHAPTER 7: MAINTENANCE
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
RLY1 COIL DELAY
Range: 1 to 10 sec in steps of 1 sec
Default: 5 s
This setting defines the Trip Coil Monitor Delay, before targets appear on the display,
"ALARM" and "MAINTENANCE" LEDs light up on the front panel, and selected output
relays operate.
BYPASS BKR STATUS
Range: Disabled, Enabled
Default: Disabled
Set the "BYPASS BKR STATUS" to Enabled when a by-pass resistor is connected across
the breaker auxiliary contact for continuous Trip circuit integrity monitoring. The circuits
will be monitored regardless of breaker position. When "BYPASS BKR STATUS" is set to
Disabled, monitoring of the trip coil will be blocked when the breaker is open.
OUTPUT RELAY X
Range: Do not operate, Operate
Default: Do not operate
For details see
Common
setpoints.
M3 BREAKER MAINTENANCE
7–7
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