标准摘要
Identifies and describes the locations in electrical installations where transient overvoltages may appear; describes the means by which such overvoltages may be limited to values not exceeding the withstand impulse voltages of the equipment supplied.
英文名称Electrical installations of buildings - Part 4: Protection for safety - Chapter 44: Protection against overvoltages - Section 443: Protection against overvoltages of atmospheric origin or due to switching