金属矿山低压漏电保护及应用  

Low-voltage leakage protection and its application in metal mines

作　　者：王小华 

机构地区：[1]溧阳市福沃特电力自动化有限公司

出　　处：《黄金》2017年第6期44-47,共4页Gold

摘　　要：低压漏电保护在金属矿山的使用越来越普遍。分析了中性点接地和中性点不接地2种接地方式的漏电特点、区别及其漏电保护原理,提出金属矿山低压漏电保护使用中存在的问题和产生的原因,介绍了适用于金属矿山漏电保护的JD低压漏电保护系统。工程实践表明:JD低压漏电保护系统能够使变电所出线和设备终端实现分级选择性漏电保护。The application of low-voltage leakage protection in metal mines is increasingly common now. This pa-per analyzed the characteristics of leakage under neutral grounding and ungrounding modes, the difference between them and their leakage protection mechanism ; presented existing problems and their causes in the application of low- voltage leakage protection ; introduced the JD low-voltage leakage protection system applicable to low-voltage leakage protection in metal mines. Engineering practice shows that the JD low-voltage leakage protection system can achieve graded and selective leakage protection for substation outlets and device terminals.

关 键 词：金属矿山 低压 漏电 中性点接地方式 漏电保护 JD低压漏电保护系统 

分 类 号：TD61[矿业工程—矿山机电]