GB/T 18216.3-2012
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3部分:环路阻抗
Electrical safety in low voltage distribution systems up to 1000V a.c. and 1500V d.c..Equipment for testing,measuring or monitoring of protective measures.Part 3:Loop impedance
GBT18216.3-2012, GB18216.3-2012