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EVS-EN IEC 60079-25:2022+A1:2025

Explosive atmospheres - Part 25: Intrinsically safe electrical systems (IEC 60079-25:2020 + COR1:2020 + IEC 60079-25:2020/AMD1:2025)

General information

Valid from 17.11.2025
Base Documents
IEC 60079-25:2020; IEC 60079-25:2020/COR1:2020; EN IEC 60079-25:2022; IEC 60079-25:2020/COR2:2022; EN IEC 60079-25:2022/AC:2022-12; IEC 60079-25:2020/AMD1:2025; EN IEC 60079-25:2022/A1:2025
Directives or regulations
None

Standard history

Status
Date
Type
Name
17.11.2025
Main + amendment
This part of IEC 60079 contains the specific requirements for design, construction and assessment of intrinsically safe systems, Type of Protection “i”, intended for use, as a whole or in part, in locations in which the use of Group I, II or III Ex Equipment is required.
NOTE 1 This standard is intended for use by the designer of the system e.g. a person who could be a manufacturer, a specialist consultant or a member of the end-user’s staff.
This document supplements and modifies the general requirements of IEC 60079-0 and the intrinsic safety standard IEC 60079-11. Where a requirement of this standard conflicts with a requirement of IEC 60079-0 or IEC 60079-11, the requirement of this standard takes precedence.
The installation requirements of Group II or Group III systems designed in accordance with this document are specified in IEC 60079-14. Where a specific requirement of IEC 60079-14 is applied by this document, the same requirements can be applied for Group I.
NOTE 2 Group I installation requirements are presently not provided in IEC 60079-14. Installation requirements for Group I are being considered.

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