JIS C0364-4-442-1999 建筑物的电气装置.第4部分:安全防护.第44章:过电压防护.第442节:高压系统和地面之间低压装置故障防护
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