标准摘要
[中文适用范围]： 本部分 IEC 62305 规定了电气和电子系统浪涌保护措施 (SPM) 的设计、安装、检查、维护和测试要求，以降低结构内因雷电电磁脉冲 (LEMP) 导致永久故障的风险。 本文件不涵盖由于雷电引起的电磁干扰保护，这可能导致内部系统故障。然而，附录 A 中报告的信息也可用于评估此类干扰。电磁干扰的保护措施在 IEC 60364-4-44 [3] 和 IEC 61000 系列 [4] 中涵盖。 本文件为电气和电子系统的设计者与保护措施的设计者之间的合作提供了指南，以实现最佳的保护效果。 本文件不涉及电气和电子系统本身的详细设计。 [外文原描述]： IEC 62305-4:2024 provides requirements for the design, installation, inspection, maintenance, and testing of surge protection measures (SPM) for electrical and electronic systems to reduce the risk of permanent failures due to lightning electromagnetic impulse (LEMP) within a structure. This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) addition of new informative Annex E and Annex F on the determination of current sharing using modelling and current sharing in PV installations respectively; b) addition of a new informative Annex G on methods of testing of system level behaviour; c) addition of a new informative Annex H on induced voltages in SPD-protected installations.
英文名称Protection against lightning - Part 4: Electrical and electronic systems within structures