EN IEC 62561-8:2026

Lightning protection system components (LPSC) - Part 8: Requirements for components for electrically insulated LPS

Publication date:   Jul 20, 2026

Scope

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.