IEC 60364-4-42:2010 ED3

Low-voltage electrical installations - Part 4-42: Protection for safety - Protection against thermal effects

Publication date:   Nov 13, 2014

General information

60.60 Standard published   May 19, 2010

IEC

TC 64

International Standard

29.120.50   Fuses and other overcurrent protection devices | 91.140.50   Electricity supply systems

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Scope

IEC 60364-4-42:2010 applies to electrical installations with regard to measures for the protection of persons, livestock and property against:
- thermal effects, combustion or degradation of materials, and risk of burns caused by electrical equipment,
- flames in case of a fire hazard being propagated from electrical installations to other fire compartments segregated by barriers which are in the vicinity, and
- the impairment of the safe functioning of electrical equipment including safety services.
This third edition cancels and replaces the second edition, published in 2001, and constitutes a technical revision. The main changes with respect to the previous edition are listed below:
- The scope now includes protection against all thermal effects and flames in case of a fire hazard being propagated from electrical installations to other fire compartments segregated by barriers which are in the vicinity.
- Requirements associated with escape routes for evacuation in an emergency have been expanded/modified.
- Requirements associated with the nature of processed or stored materials have been expanded/modified.
- Requirements associated with combustible constructional materials have been expanded/modified.
- Requirements associated with fire propagating structures have been modified slightly.
- New requirements for the selection and erection of installations in locations which might endanger precious goods have been added.
- Protection against overheating now includes space heating appliances.

Life cycle

PREVIOUSLY

WITHDRAWN
IEC 60364-4-42:2001 ED2

NOW

PUBLISHED
IEC 60364-4-42:2010 ED3
60.60 Standard published
May 19, 2010

CORRIGENDA / AMENDMENTS

PUBLISHED
IEC 60364-4-42:2010/AMD1:2014 ED3

REVISED BY

IN_DEVELOPMENT
IEC 60364-4-42 ED4