低压电气设施.第7-704部分:特殊设施或场所的要求.建筑和拆除工地的设施

[中文适用范围]： IEC 60364-7-704的适用要求适用于施工和拆除现场使用的电气装置，这些装置旨在在建筑工程或拆除工程完成后停止使用。示例包括：新建筑物的建筑工程；现有建筑物或部分现有建筑物的修复、改造、扩建或拆除；土木工程；土方工程；类似性质的工程。要求适用于固定或可移动的装置。要求不适用于施工现场的行政地点（如办公室、更衣室、会议室、食堂、餐厅、宿舍、厕所）内的装置。 [外文原描述]： IEC 60364-7-7-704:2017 lays down requirements which apply to installations for construction and demolition sites for use during the period of the construction or demolition work which are intended to be taken out of service upon completion of the works. Examples include the following: - construction work of new buildings; - repair, alteration, extension or demolition of existing buildings or parts of existing buildings; - engineering works; - earthworks; - work of similar nature. The requirements apply to fixed or moveable installations. This new edition includes the following significant technical changes with respect to the previous edition: - clarification of the scope; - clarification of compliance with standards; - clarification of devices for isolation.