低压断路器分合闸回路串接状态辅助触点思考

Thoughts on Auxiliary Contact of Opening and Closing Circuits in Series Connection of LV Circuit Breaker

总结断路器电气分合闸回路串接状态辅助触点的原因。结合低压断路器自身特点、应用及相应的标准要求,着重讨论串联状态辅助触点存在的不足和风险,提出串联状态辅助触点应考虑的问题,并针对特殊需要串联的应用给出相应的建议。

This paper mainly summarizes the reasons of the auxiliary contact of electrical opening and closing circuits in series connection of circuit breaker.Besides,in combination with the characteristic,application and corresponding standard requirements of LV circuit breaker,this paper emphatically discusses the disadvantages and risks of auxiliary contact in series connection,puts forward problems that shall be considered for auxiliary contact in series connection,and offers relevant suggestions for applications that require series connection.