IEC 62561-3:2023 – Lightning protection system components (LPSC) – Part 3: Requirements for isolating spark gaps (ISGs)

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:

  1. a) alignment with the latest edition of ISO 22479 relating to humid sulphurous atmosphere treatment;
  2. b) addition of a new normative Annex D for the applicability of previous tests.


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