GB/T 18216.9-2015
交流1000V和直流1500V以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第9部分:IT系统中的绝缘故障定位设备
Electrical safty 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
GBT18216.9-2015, GB18216.9-2015