标准摘要
[中文适用范围]： IEC 62305 的这一部分提供了电气和电子系统保护 (SPM) 的设计、安装、检查、维护和测试信息，以降低结构内雷电电磁脉冲 (LEMP) 造成永久性故障的风险。本标准不包括针对雷电电磁干扰的防护，雷电电磁干扰可能导致内部系统故障。然而，附件 A 中报告的信息也可用于评估此类干扰。 IEC 60364-4-44 和 IEC 61000 系列涵盖了电磁干扰保护措施。该标准为电气和电子系统设计者与保护措施设计者之间的合作提供了指南，以达到最佳的保护效果。本标准不涉及电气和电子系统本身的详细设计。 [外文原描述]： IEC 62305-4:2010 provides information for the design, installation, inspection, maintenance and testing of electrical and electronic system protection (SPM) to reduce the risk of permanent failures due to lightning electromagnetic impulse (LEMP) within a structure. 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) Isolating interfaces capable of reducing conducted surges on lines entering the structure are introduced. 2) Minimum cross-sections for bonding components are slightly modified. 3) First negative impulse current is introduced for calculation purposes as electromagnetic source of harm to the internal systems. 4) Selection of SPD with regard to voltage protection level is improved to take into account oscillation and induction phenomena in the circuit downstream of SPD. 5) Annex C dealing with SPD coordination is withdrawn and referred back to SC 37A. 6) A new informative Annex D is introduced giving information on factors to be considered in the selection of SPDs. This bilingual version (2012-06) corresponds to the monolingual English version, published in 2010-12.
英文名称Protection against lightning - Part 4: Electrical and electronic systems within structures