合闸弹簧疲软导致断路器拒动的原因分析及处理

Cause and Treatment of Circuit Breaker Refusing to Operate due to Weak Closing Spring

阐述出现断路器合闸不到位的异常情况,可能会导致断路器在故障时无法跳闸,引起拒动。提出将断路器分合闸弹簧列入检修重点试验项目,有效避免引起电网事故的风险。

This paper describes the abnormal situation that the circuit breaker is not closed in place, which may lead to the failure of the circuit breaker to trip and cause the failure to operate. It puts forward that the opening and closing spring of circuit breaker should be included in the key test items of maintenance, so as to effectively avoid the risk of power grid accidents.