标准摘要
[中文适用范围]： 包括以下内容：用途、供应和结构（描述 TN、TT 和 IT 配电系统和系统接地）；外部影响的分类；兼容性;可维护性；安全服务。 [外文原描述]： Includes the following: purposes, supplies and structures (gives descriptions of TN, TT and IT distribution systems and system earthing); classification of external influences; compatibility; maintainablility; safety services.
英文名称Electrical installations of buildings - Part 3: Assessment of general characteristics