KS C IEC 61557-9-2013 交流1000V和直流1500V以下低压配电系统电气安全.防护检测的试验、测量或监控设备.第9部分:IT系统的绝缘故障定位设备
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c.-Equipment for testing, measuring or monitoring of protective measures-Part 9:Equipment for insulation fault location in IT systems