GOST R 50571.18-2000 建筑物的電氣裝置.第4部分:安全防護.第44章:過電壓保護.第442節:低壓電氣裝置的高壓系統與地之間的故障防護
Electrical installations of buildings. Part 4. Protection for safety. Chapter 44. Protection against overvoltages. Section 442. Protection of low-voltage installations against faults between high-voltage systems and earth