KS C IEC 60364-4-442:2002 Electrical installations of buildings-Part 4:Protection for safety-Chapter 44:Protection against overvoltages-Section 442:Protection oflow-voltage installations against faults between high-voltage sys
2002KS C IEC 60364-4-442:2002 Electrical installations of buildings-Part 4:Protection for safety-Chapter 44:Protection against overvoltages-Section 442:Protection oflow-voltage installations against faults between high-voltage sys