Analysis of the Unexpected Opening of ABB Circuit-Breaker Opening under 30% Control Voltage

Zhi Qiang Yu; Xing Wang

doi:10.4028/www.scientific.net/AMR.1003.160

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Analysis of the Unexpected Opening of ABB Circuit-Breaker Opening under 30% Control Voltage
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Analysis of the Unexpected Opening of ABB Circuit-Breaker Opening under 30% Control Voltage

Abstract:

The test data of circuit-breaker operating characteristics is important parameter to monitor the circuit-breaker. The unexpected opening of ABB HPL Series circuit-breaker under 30% control voltage in the recent operating characteristics in Shenzhen is analysed in this paper .The root cause of failure is identified. Two solutions are proposed: adjust the gap between coil and armature and replace the trip coil “open”, to eliminate such failures, ensure the safe and reliable operation of the circuit breaker.