IEC 62561-3:20 23作为IEC 62561-3:20 23 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 62561-3:20 23规定了要求和防雷系统隔离火花隙(ISG)的测试。ISG可用于将防雷系统间接粘合到由于功能原因不允许直接粘合的其他附近金属制品上。第三版取消并取代了2017年出版的第二版。本版构成技术修订版。与上一版相比，该版本包括以下重大技术变化。 a)与有关潮湿含硫气氛处理的最新版本ISO 22479保持一致； b)为先前测试的适用性增加了新的规范性附件D。

IEC 62561-3:2023 is available as IEC 62561-3:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62561-3:2023 specifies the requirements and tests for isolating spark gaps (ISGs) for lightning protection systems. ISGs can be used to indirectly bond a lightning protection system to other nearby metalwork where a direct bond is not permissible for functional reasons. This third edition cancels and replaces the second edition, published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition.
a) alignment with the latest edition of ISO 22479 relating to humid sulphurous atmosphere treatment;
b) addition of a new normative Annex D for the applicability of previous tests.