雷电防护系统组件（LPSC） 第8部分：电绝缘型雷电防护系统组件的要求

[中文适用范围]： 本评注版（CMV）为国际电工委员会（IEC）62561-8:2026标准的注释版本，旨在帮助用户识别该版本与此前2018年版IEC TS 62561-8之间的修订内容。凡有修订之处，均在页边以竖线标示：新增内容以绿色文字显示，删除内容则以红色删除线标示。 IEC 62561-8:2026规定了用于电气绝缘接闪系统（LPS）的组件所要求的规范及测试方法。这些组件可降低间距要求，主要包括： - 绝缘支撑件：与接闪系统及引下线配合使用，以确保维持适当的隔离距离； - 绝缘引下线及其专用紧固件。 本文件未涵盖针对爆炸性环境使用的绝缘支撑件及绝缘引下线组件的测试内容。 本版标准于2026年首次发布，替代并废止了2018年发布的IEC TS 62561-8标准，属于技术修订版。与2018年版相比，本版主要技术变更包括： a) 标准标题及适用范围已调整； b) 依据IEC 60068-2-52:2017关于盐雾处理的规定更新了相关内容； c) 依据ISO 22479:2019关于含硫潮湿大气处理的规定更新了相关内容； d) 引入了两种不同的拉伸试验配置示例； e) 增加了关于污染影响的新信息； f) 增加了高压脉冲试验的替代布置方案； g) 新增规范性附录H，用于说明先前试验的适用性； h) 更新了高压脉冲试验的通过判据； i) 增加了对负极性高压脉冲试验的解释说明。 [外文原描述]： IEC 62561-8:2026 specifies the requirements and tests for components used for electrically insulated LPS. These components, which can reduce the separation distance, are as follows: - insulating stand-offs, used in conjunction with an air-termination system and down-conductors with the aim of maintaining the proper separation distance; - insulating down‑conductors, including their specific fasteners. Testing of insulating stand-offs and insulating down-conductor components for an explosive atmosphere is not covered by this document. This first edition cancels and replaces IEC TS 62561-8 published in 2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC TC 62561-8:2018: a) title and scope of the standard has been adjusted; b) the document has been updated in line with IEC 60068-2-52:2017 on salt mist treatment; c) the document has been updated in line with ISO 22479:2019 on humid sulphureous atmosphere treatment; d) two different possible example configurations for pull out tests have been introduced; e) additional information on pollution has been included; f) an alternate test arrangement for high voltage impulse test has been included; g) a new normative Annex H for applicability of previous tests has been introduced; h) pass criteria for high voltage impulse testing updated; i) explanation on high voltage impulse testing with negative polarity has been added.