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。
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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.
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...