双断点与单断点万能式断路器电动稳定性的分析与对比

摘要

提出了一种新型双断点万能式断路器.以两个简化的模型,在短路电流作用下,分析了双断点和单断点万能式断路器触头上的电动斥力,对比了双断点和单断点万能式断路器触头上的电动稳定性,说明了双断点结构具有高电动稳定性的原因.指出提高操作机构的机械强度是双断点万能式断路器设计的关键.%A new dual-breaker air circuit breaker(ACB)was proposed.With two simplified model suffering the effect of short circuit current,the dynamic repulsion force acted on contact in ACB with single and double breakers were analyzed and compared.The reason that dual-breaker configuration had higher dynamic stability was explained as well.The key design of ACB is to impmve the mechanical strength of operation mechanism.