Abstract：This paper showed a case of frequent trip of air circuit breaker under normal operation condition, Improved overcurrent protection characteristics test. Auxiliary relay detection loop verify over current backup protection operation characte in the test. The new test method solves the difficult problem of backup protection action characteristic verification and provides the basis for fault diagnosis. New method can be used as reference for fault treatment and electrical test of the same type of air circuit breaker.
李洁砾, 沈铭. 万能式断路器误动作故障分析及试验方法改进[J]. 电气技术, 2018, 19(5): 71-75.
Li Jieli, Shen Ming. Fault analysis of air circuit breaker error action and improvement of test method. Electrical Engineering, 2018, 19(5): 71-75.