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IEC 61439-3-ed.2.0
Low-voltage switchgear and controlgear assemblies - Part 3: Distribution boards intended to be operated by ordinary persons (DBO)
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STANDARD published on 26.3.2024
The information about the standard:
Designation standards: IEC 61439-3-ed.2.0
Publication date standards: 26.3.2024
SKU: NS-1170240
The number of pages: 83
Approximate weight : 280 g (0.62 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 61439-3-ed.2.0 :
IEC 61439-3:2024 defines the specific requirements for distribution boards intended to be operated by ordinary persons (abbreviated DBO throughout this document, see 3.1.101) as follows: - assemblies intended to be operated by ordinary persons (e.g. switching operations and replacing fuse-links), e.g. in domestic (household) applications; - assemblies containing outgoing circuits with protective devices intended to be operated by ordinary persons, complying e.g. with IEC 60898-1, the IEC 61008 series, the IEC 61009 series, IEC 62606, IEC 62423 and IEC 60269-3; - assemblies for applications where the nominal voltage to earth does not exceed 300 V AC (see Table G.1 of IEC 61439-1:2020); NOTE The voltage limits for DC applications are under consideration. - assemblies with a rated current (Inc) of the outgoing circuits not exceeding 125 A and a rated current (InA) not exceeding 250 A; - assemblies intended for use in connection with the generation, transmission, distribution and conversion of electrical energy, and for the control of equipment consuming electrical energy and for associated data processing; - enclosed, stationary assemblies; - assemblies for indoor or outdoor use. This second edition cancels and replaces the first edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) alignment with the structure of IEC 61439-1:2020; b) inclusion in the scope of more examples of the type of protection and control devices; c) deletion of type A and Type B DBOs; d) addition of a new Annex BB related to DBOs used in a prosumer’s electrical installation (PEI); e) addition of a new Annex CC related to rated current of a DBO with additional source of supply in parallel/simultaneously with another source that is connected to the DBO e.g. PV. LIEC 61439-3:2024 definit les exigences specifiques pour les tableaux de repartition destines a etre utilises par des personnes ordinaires (abreges DBO dans lensemble du present document, voir 3.1.101) ci-apres: - ensembles destines a etre utilises par des personnes ordinaires (par exemple, pour manouvrer des appareils de commande et remplacer des elements de fusible), par exemple dans des applications domestiques; - ensembles qui contiennent des circuits de depart avec des dispositifs de protection, destines a etre utilises par des personnes ordinaires, qui satisfont par exemple a lIEC 60898-1, a la serie IEC 61008, a la serie IEC 61009, a lIEC 62606, a lIEC 62423 et a lIEC 60269-3; - ensembles destines a des applications pour lesquelles la tension nominale a la terre ne depasse pas 300 V en courant alternatif (voir Tableau G.1 de lIEC 61439-1:2020); NOTE Les limites de tension pour les applications en courant continu sont a letude. - ensembles dans lesquels le courant assigne (Inc) des circuits de depart est inferieur ou egal a 125 A et dont le courant assigne (InA) est inferieur ou egal a 250 A; - ensembles destines a etre utilises avec des equipements concus pour la production, le transport, la distribution et la conversion de lenergie electrique, la commande des materiels qui consomment de lenergie electrique et le traitement des donnees associees; - ensembles fixes sous enveloppe; - ensembles pour utilisation en interieure ou en exterieur. Cette seconde edition annule et remplace la premiere edition parue en 2012. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente: a) alignement sur la structure de lIEC 61439-1:2020; b) inclusion dans le domaine dapplication de plus dexemples de types de dispositifs de protection et de commande; c) suppression des DBO de type A et de type B; d) ajout dune nouvelle Annexe BB relative aux DBO utilises dans une installation electrique de prosommateur (PEI); e) ajout dune nouvelle Annexe CC relative au courant assigne dun DBO avec une source dalimentation supplementaire parallelement/simultanement avec une autre source reliee au DBO, par exemple un panneau photovoltaique (PV).
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