摘要
针对煤矿井下供电系统漏电保护要具有选择性的要求,KBZ9矿用真空馈电开关利用零序电压叠加零序电流信号的原理,很好的解决了煤矿井下漏电保护选择性的问题。
In view of the requirements of the earth leakage protection for power supply system under a coal mine, the principle of zero sequence voltage superposed zero sequence current signal is applied to KBZ9 vacuum feed witch for mine. The selective problem of earth leakage protection is well solved
出处
《电气开关》
2010年第2期59-61,共3页
Electric Switchgear
关键词
供电系统
选择性漏电保护
馈电开关
零序电压
零序电流
power supply system
selective leakage protection
feed switch
zero phase-sequence voltage
zero phase-sequence current
