JIS C0364-4-442-1999 建筑物的電氣裝置.第4部分:安全防護.第44章:過電壓防護.第442節:高壓系統和地面之間低壓裝置故障防護
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