标准摘要
[中文适用范围]： IEC 60364-5-52 第 5-52 部分涉及布线系统的选择和安装。本标准也一般适用于保护导体，而 IEC 60364-5-54 包含有关这些导体的进一步要求。 [外文原描述]： IEC 60364-5-52:2009 deals with the selection and erection of wiring systems. This third edition cancels and replaces the second edition, published in 2001, and constitutes a technical revision. The main changes with respect to the previous edition are as follows: - Subclause 521.4 introduces minor changes with regard to busbar trunking systems and powertrack systems. - Subclause 523.6 introduces minor changes with regard to the sizing of cables where harmonic currents are present. - A new sublause 523.9 concerning single-core cables with a metallic covering has been introduced. - Clause 525 introduces changes in the maximum value of voltage drop permitted between the origin of the consumer's installation and the equipment which should not be greater than that given in the relevant annex. - Clause 526 introduces minor changes to electrical connections including additional exceptions for inspection of connections and additional notes. - Clause 528 introduces additional requirements with regard to proximity of underground power and telecommunication cables. - Clause 529 introduces minor changes to selection and erection of wiring systems in relation to maintainability, including cleaning. The contents of the corrigendum of February 2011 have been included in this copy.
英文名称Low-voltage electrical installations - Part 5-52: Selection and erection of electrical equipment - Wiring systems