一种新颖的万能式断路器短路短延时动作可返回试验方式

摘要

This article proposed a returnable test method of short time-delay operation for air circuit breaker. By connecting an adjustable impedance and an electromechanical change-over switch (e.g.an contactor )to the first winding of the multi magnetic circuit transformer,by controlling the closing time and the opening time of electromechanical change-over switch with a process control device,the current of the secondary winding can drop from 5 digits ampere value to 4 digits ampere value after making for a short time.%提出了一种万能式断路器短延时动作可返回试验方法。在多磁路变压器一次侧接入一个可调阻抗和一个机电式投切开关（如接触器），通过程序控制器控制投切开关的闭合与断开时间，实现了二次侧电流从万安级短时间通电后返回至千安级。