For LW14 and LW15 SF6 circuit breaker, the reason of reclosing block after opening operation has been analyzed in the paper.

对部分LW14,LW15型SF 6断路器分闸操作后重合闸闭锁的原因进行了分析，提出了改造方案，并在实践中取得了良好效果。

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This article proposes the operating principle and the program block-diagram of the automatic switching control to the main circuit-breaker on board of each powered unit of the train at proper time.

本文介绍了该装置对列车各车组适时进行主断路器自动分合闸控制的工作原理及程序框图。

youdao

This article proposes the operating principle and the program block-diagram of the automatic switching control to the main circuit-breaker on board of each powered unit of the train at proper time.

本文介绍了该装置对列车各车组适时进行主断路器自动分合闸控制的工作原理及程序框图。

youdao