标准摘要
[中文适用范围]： 通过标称电压高达 1500 V（含）的直流电气装置扩展了范围。添加了新的第 4 条：直流电压带。给出接地系统的极地之间以及极间的电压值。指定用于 [外文原描述]： Classification of d.c. installations according to their nominal voltage. As for a.c. a distinction has been made between two bands when the lower band relates mainly to installations whose voltages are restricted for safety reasons. Covers all voltages from zero up to and including 120 V ripple-free d.c.
英文名称Amendment 1 - Voltage bands for electrical installations of buildings