标准摘要
[中文适用范围]： 识别并描述电气装置中可能出现瞬态过电压的位置；描述了将此类过电压限制在不超过所提供设备的耐受脉冲电压的值的方法。 [外文原描述]： 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