标准摘要
[中文适用范围]： 指定必须在导体线路中放置过载和短路保护装置的位置。根据 TN、TT 和 IT 系统规定相线和中性导体保护的特殊要求。注：-要求不考虑外部影响。有关外部影响条件的保护措施的应用，请参见 IEC 60364-4-482。 [外文原描述]： Specifies where overload and short-circuit protective devices have to be placed in the run of the conductor. States particular requirements for protection of phase and neutral conductors according to TN, TT and IT systems. Note: -Requirements do not take account of external influences. For application of protective measures in relation to conditions of external influences, see IEC 60364-4-482.
英文名称Electrical installations of buildings - Part 4: Protection for safety - Chapter 47: Application of protective measures for safety - Section 473: Measures of protection against overcurrent