Issue:
Shunt trip accessory to the main breaker is tripping
Product Line:
ATS22 Soft Start
Environment:
Motor Control Centers using an ATS22 Soft Start with a shunt trip breaker
Cause:
Time delay relay is set to the wrong time.
Resolution:
Increase the time on the time delay relay. This relay is used to delay the energization of the shunt trip coil when the bucket is powered ON. The shunt trip coil must not be allowed to energize until the normally closed trip relay on the soft start has time to open. Also, if the ATS22 goes to a faulted state, the shunt trip will trip the breaker.
Udgivet til: Schneider Electric Danmark
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