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EN IEC 60947-7-1:2025

Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors

Edition date: 2025-06-27
In Force
Available languages: English, French
Summary: IEC 60947-7-1:2025 specifies requirements for terminal blocks and test disconnect terminal blocks according to Annex D with screw-type or screw-less-type clamping units primarily intended for industrial or similar use and to be fixed to a support to provide electrical and mechanical connection between copper conductors. It applies to terminal blocks intended to connect round copper conductors, with or without special preparation, having a cross-section between 0,05 mm2/30 AWG and 300 mm2/600 kcmil, intended to be used in circuits of a rated voltage not exceeding 1 000 V AC up to 1 000 Hz or 1 500 V DC. The tests on terminal blocks are made with AC or DC supply as required in relevant clauses of this document. This fourth edition cancels and replaces the third edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Scope extension for smaller conductor cross-sections; b) Implementation of a contact pressure via insulation material (CoPI) test; c) Introduction of new informative Annex E for larger cross-sections; d) Reorganisation of all tables merged into two tables for electrical and mechanical values; e) Implementation of AWG-sizes conductor types as an equivalent type of metric conductor with examples in Annex C; f) Reorganisation of Annex D test disconnect terminal blocks to enhance readability; g) Introduction of new informative Annex A for main characteristics of terminal blocks.

L'IEC 60947-7-1:2025 spécifie les exigences pour les blocs de jonction et les blocs de jonction de déconnexion d'essai conformément à l'Annexe D avec des organes de serrage du type à vis ou du type sans vis, destinés principalement à des usages industriels ou analogues et à être fixés sur un support afin d'assurer une connexion électrique et mécanique entre des conducteurs en cuivre. Elle s'applique aux blocs de jonction destinés à raccorder des conducteurs ronds en cuivre, avec ou sans préparation spéciale, de section comprise entre 0,05 mm2/AWG 30 et 300 mm2/600 kcmil, destinés à être insérés dans des circuits dont la tension assignée ne dépasse pas 1 000 V en courant alternatif jusqu'à 1 000 Hz ou 1 500 V en courant continu. Les essais sur les blocs de jonction sont effectués avec une alimentation en courant alternatif ou en courant continu, selon les exigences des articles concernés du présent document. Cette quatrième édition annule et remplace la troisième édition parue en 2009. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) extension du domaine d'application pour les plus petites sections de conducteurs; b) mise en œuvre d'un essai de pression de contact par l'intermédiaire d'un matériau isolant (CoPI); c) ajout d'une nouvelle Annexe E informative pour les sections plus grandes; d) réorganisation de tous les tableaux fusionnés en deux tableaux pour les valeurs électriques et mécaniques; e) mise en œuvre des types de conducteurs de tailles AWG selon un type équivalent de conducteur métrique, avec des exemples, à l'Annexe C; f) réorganisation de l'Annexe D concernant les blocs de jonction de déconnexion d'essai afin d'améliorer la lisibilité; g) ajout d'une nouvelle Annexe A informative concernant les caractéristiques principales des blocs de jonction.
ICS: 29.130.20-Low voltage switchgear and controlgear
CTN: CLC/TC 121A - 1929958

Otras Relaciones

Acuerdo de Frankfurt IEC 60947-7-1:2025

Reemplazo Normas

Reemplaza a EN 60947-7-1:2009

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