GB/T 18216.4-2007
交流1000V和直流1500V以下低壓配電系統(tǒng)電氣安全 防護(hù)措施的試驗(yàn)、測量或監(jiān)控設(shè)備 第4部分:接地電阻和等電位接地電阻
Electrical safety in low voltage distribution systems up to 1 000V a.c.Equipment for testing,measuring or monitoring of protective measures.Part 4:Resistance of earth connection and equipotential bonding
GBT18216.4-2007, GB18216.4-2007