摘要
介绍了应用在煤矿井下各种漏电保护的原理和特点,分析了漏电故障的电气特征,指出了各种漏电保护的应用条件和使用中存在的问题。
The priniciple and features of earth leakage protection in the underground distribution networks are introduced.The electrical characteristics of leakage faults are analyzed.The problems and application conditions of the earth leakage protection are pointed out.
出处
《电气开关》
2011年第5期47-49,54,共4页
Electric Switchgear
关键词
漏电保护
附加直流
零序电压
零序电流
零序功率
earch leakage protection
additional DC power supply
zero sequence voltage
zero sequence current
zero sequence power
