对弧焊电源保护接地与保护接零的探讨

Protective Earthing of Arc Welding power Sources and Protective Zero are Discussed

本文从低压电网系统中的电气安全防护理论出发，对弧焊电源的保护接地与保护接零问题进行了探讨，并提出了对现行标准的修改意见。

Proceeding from the electric safty protective theory of low-voltage network,the protective earthing of arc welding power sources and protective zero arc discussed.The precent standard reviews are advanced in this paper.