GB/T 18216.9-2015
交流1000V和直流1500V以下低壓配電系統電氣安全 防護措施的試驗、測量或監控設備 第9部分:IT系統中的絕緣故障定位設備
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