位于机房内的全部灯光开关器都装设了时间掣。
低压熔断器;低压开关器及控制器-开关切断器及熔断器组合单位;
Switches , disconnectors , switch - disconnectors and fuse - combination units ; low voltage switchgear and controlgear assemblies.
本文讨论了如何设计具有IEC - 625标准接口的可程控开关器。
In this article it is discussed how to design programmable switch with iec-625 standard interface.
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