It is the key point to judge whether the earthing protective system of an elevator can he approved. Present paper analyses the working principles of three diff...
本文通过对三种不同接地保护系统工作原理的分析，指出实现零线和接地线应始终分开的正确方法。
Working principle and application features of anti-arc coil in transformer neutral-point earthing mode are introduced, which provides safety running for electricity supply system.
阐述了变压器中性点接地方式中的消弧线圈接地方式的工作原理和使用特点，为供电系统的安全运行提供了保障。
It is the key point to judge whether the earthing protective system of an elevator can he approved. Present paper analyses the working principles of three different...
本文通过对三种不同接地保护系统工作原理的分析，指出实现零线和接地线应始终分开的正确方法。
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