IEC 62305-1:2023 PRV 
Pre release version

Protection against lightning - Part 1: General principles


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This Final Draft International Standard is an up to 6 weeks' pre-release of the official publication. It is available for sale during its voting period: 2023-09-08 to 2023-10-20. By purchasing this FDIS now, you will automatically receive, in addition, the final publication.

IEC 62305-1:2023 provides general principles for the protection of structures against lightning, including their installations and contents, as well as persons.
The following cases are outside the scope of this document:
– railway systems;
– vehicles, ships, aircraft, offshore installations;
– underground high pressure pipelines;
– pipe, power and telecommunication lines placed outside the structure;
– nuclear power plants;
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) reference to the IEC 62561 series is made in Annex D to provide a link to relevant lightning protection system components according to the IEC 62561 series;
b) risk management introduces the concept of types of loss with public relevance;
c) the concept of frequency of damage that can impair the availability of the internal systems within the structure has been introduced;
d) surge currents due to lightning flashes have been more accurately specified for SPD dimensioning in low-voltage power systems and in telecommunication systems.

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Additional information

Publication typeInternational Standard
Publication date2023-09-08
Available language(s)English
TC/SCTC 81 - Lightning protectionrss
ICS29.020 - Electrical engineering in general
91.120.40 - Lightning protection
Stability date  2026
File size2516 KB

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