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IEC 60364-4-42-ed.4.0
Low-voltage electrical installations - Part 4-42: Protection for safety - Protection against thermal effects
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STANDARD published on 22.11.2024
The information about the standard:
Designation standards: IEC 60364-4-42-ed.4.0
Publication date standards: 22.11.2024
SKU: NS-1207637
Approximate weight : 300 g (0.66 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Fuses and other overcurrent protection devicesElectricity supply systems
Annotation of standard text IEC 60364-4-42-ed.4.0 :
IEC 60364-4-42:2024 applies to electrical installations with regard to measures for the protection of persons, livestock and property against: • thermal effects, risk of 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 due to thermal effects. This group safety publication (GSP) focusing on safety essential requirements is primarily intended to be used as a product safety standard for the installations mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for installations similar to those mentioned in the scope of this GSP, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51. One of the responsibilities of a TC is, wherever applicable, to make use of basic safety publications and/or group safety publications in the preparation of its publications This fourth edition cancels and replaces the third edition published in 2010 and Amendment 1:2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the Scope now includes a new paragraph stating that IEC 60364-4-42 has become a group safety publication (GSP) following the Advisory Committee on Safety (ACOS) recommendation for approval of the group safety function "protection against thermal effects for any kind of low-voltage electrical installations" to TC 64; this GSP is primarily intended to be used as a product safety standard for the installations mentioned in the scope, but also to be used by TCs in the preparation of publications for installations similar to those mentioned in the scope of this GSP; b) new terms and definitions have been added; c) a new Subclause 421.6 regarding measures for preventing fires originating from the use of an electrical stove or cooker or hob has been added; d) the previous Subclause 421.7 was expanded and moved to a new Clause 426: Additional protective measures against thermal effect for locations where consequences of fire are severe; e) requirements for escape routes have been expanded and modified; f) requirements for final circuits in BE2 locations have been expanded and modified; g) requirements for locations with irreplaceable goods or with business critical facilities have been expanded and modified; h) a new Clause 425 for protection against fire due to fault currents has been added; i) a new Clause 427 for protection against assembly internal arc faults has been added IEC 60364-4-42 s’applique aux installations electriques en ce qui concerne les mesures de protection des personnes, du betail et des biens contre: • les effets thermiques, les risques de combustion ou de degradation des materiaux, et les risques de brulure provoques par un materiel electrique; • la propagation des flammes en cas de danger d’incendie, depuis les installations electriques vers d’autres compartiments feu separes par des barrieres se trouvant a proximite; et • les atteintes a la securite de fonctionnement des materiels electriques, y compris les services de securite, dues aux effets thermiques. La presente publication groupee de securite (GSP), qui met l’accent sur les exigences essentielles de securite, est avant tout destinee a etre utilisee en tant que norme securite des produits pour les installations citees dans le domaine d’application, mais elle est egalement destinee a etre utilisee par les CE dans le cadre de l’elaboration de publications pour des installations similaires a celles mentionnees dans le domaine d’application de cette GSP, conformement aux principes etablis dans l’IEC Guide 104 et l’lSO/lEC Guide 51. L’une des responsabilites d’un CE consiste, le cas echeant, a utiliser les publications fondamentales de securite et/ou les publications groupees de securite dans le cadre de l’elaboration de ses publications. Cette quatrieme edition annule et remplace la troisieme edition parue en 2010 et son Amendement 1:2014. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a l’edition precedente: a) le Domaine d’application contient maintenant un nouvel alinea indiquant que l’IEC 60364 4 42 est devenue une publication groupee de securite (GSP, Group Safety Publication) qui suit la recommandation du Comite consultatif de la securite (ACOS, Advisory Committee on Safety) concernant l’approbation de la fonction groupee de securite "protection contre les effets thermiques pour tout type d’installation electrique basse tension" conformement au TC 64; cette GSP est avant tout destinee a etre utilisee en tant que norme de securite des produits pour les installations citees dans le domaine d’application, mais elle est egalement destinee a etre utilisee par les comites techniques dans le cadre de l’elaboration de publications pour des installations similaires a celles mentionnees dans le domaine d’application de cette GSP; b) de nouveaux termes et de nouvelles definitions ont ete ajoutes c) un nouveau paragraphe 421.6, qui concerne les mesures pour la prevention des incendies dus a l’utilisation d’une cuisiniere, d’un rechaud ou d’un plan de cuisson electrique, a ete ajoute; d) le paragraphe 421.7 precedent a ete rallonge et deplace vers un nouvel Article 426: Mesures de protection supplementaires contre les effets thermiques pour les emplacements dans lesquels les consequences d’un incendie sont graves; e) les exigences concernant les issues de secours ont ete developpees et modifiees; f) les exigences concernant les circuits terminaux dans les locaux BE2 ont ete developpees et modifiees; g) les exigences concernant les emplacements contenant des biens irremplacables ou les installa
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