煤矿井下低压馈电开关的漏电保护  

On the Leakage of Electricity of Colliery Low-voltage Switch

作　　者：冯英博 

机构地区：[1]河南神火集团,河南永城476600

出　　处：《煤矿机械》2008年第12期176-177,共2页Coal Mine Machinery

摘　　要：针对目前煤矿井下低压馈电开关的2种主要漏电保护方式:附加直流电源检测式漏电保护、零序功率方向式漏电保护,分析了其保护原理,总结了其优缺点,对于设计和使用低压馈电开关具有重要意义。Analyzed a protection principle of the two main leakage protection ways： the attachment direct - current power supply examination type leakage protection and the zero foreword power direction type leakage protection which are used in present coal mine low voltage feed switch, then summarized their merits and shortcomings, it has the great significance for designing and using the low- voltage feed switch.

关 键 词：馈电开关 保护 漏电 选择性 

分 类 号：TU684[建筑科学—建筑技术科学]