浅谈电力系统中的接地和接零

在供、配电系统中,由于电气装置绝缘老化、磨损或被过电压击穿等原因,都会使原来不带电的部分(如金属底座、金属外壳、金属框架等)带电,或者使原来带低压电的部分带上高压电,这些意外的不正常带电将会引起电气设备损坏和人身触电伤亡事故。为了避免这类事故的发生,通常采取保护接地和保护接零的防护措施。

On the power system and then ground zero

for,the distribution system,due to aging electrical insulation device,worn or over-voltage breakdown and other reasons,will not live to make the original part(such as base metals,metal,metal framework,etc.) charged,or so The original band of low pressure to bring some of the high-voltage electricity,these accidents do not normally live electrical equipment damage will be caused by electric shock and personal injury and death.In order to avoid such accidents are usually taken to protect ground zero access and protection of the protective measures.