IEC 60364-4-42 Ed. 3.1 b PDF

Low-voltage electrical installations – Part 4-42: Protection forsafety – Protection against thermal effects CONSOLIDATED EDITION

IEC 60364-4-42 Ed. 3.1 b – Low-voltage electrical installations – Part 4-42: Protection forsafety – Protection against thermal effectsCONSOLIDATED EDITION

IEC 60364-4-42:2010+A1:2014 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 barrierswhich 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 mainchanges with respect to the previous edition are listed below:
– The scope now includes protection against all thermal effects andflames 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 storedmaterials have been expanded/modified.
– Requirements associated with combustible constructional materialshave 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 heatingappliances. This consolidated version consists of the third edition (2010)and its amendment 1 (2014). Therefore, no need to order amendment in addition to this publication.