雷电防护.第3部分:建筑物的物理损害和生命危险

[中文适用范围]： IEC 62305 的这一部分提供了通过防雷系统 (LPS) 保护结构免受物理损坏的要求，以及防止 LPS 附近的接触电压和跨步电压对生物造成伤害的要求（参见 IEC 62305-1）。本标准适用于： a) 不受高度限制的建筑物 LPS 的设计、安装、检查和维护； b) 建立防止接触电压和跨步电压对生物造成伤害的保护措施。注 1：正在考虑因爆炸风险而对周围环境造成危险的结构中 LPS 的具体要求。附件 D 中提供了临时使用的附加信息。注 2：IEC 62305 的本部分无意提供针对过电压引起的电气和电子系统故障的保护。 IEC 62305-4 中提供了此类情况的具体要求。注 3：风力涡轮机防雷击的具体要求在 IEC 61400-24 中报告。 [外文原描述]： IEC 62305-3:2010 provides the requirements for protection of a structure against physical damage by means of a lightning protection system (LPS), and for protection against injury to living beings due to touch and step voltages in the vicinity of an LPS (see IEC 62305-1). This second edition cancels and replaces the first edition, published in 2006, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: 1) Minimum thicknesses of metal sheets or metal pipes given in Table 3 for air-termination systems are assumed as not able to prevent hot-spot problems. 2) Steel with electro-deposited copper is introduced as material suitable for LPS. 3) Some cross-sectional areas of LPS conductors were slightly modified. 4) For bonding purposes, isolating spark gaps are used for metal installations and SPD for internal systems. 5) Two methods simplified and detailed are provided for evaluation of separation distance. 6) Protection measures against injuries of living beings due to electric shock are considered also inside the structure. 7) Improved information for LPS in the case of structures with a risk of explosion are given in Annex D (normative). This bilingual version (2012-06) corresponds to the monolingual English version, published in 2010-12.