Amendment 1 - Low-voltage switchgear and controlgear assemblies - Part 5: Particular requirements for assemblies intended to be installed outdoors in public places - Cable distribution cabinets (CDCs) for power distribution in networks

Amendement 1 - Ensembles d'appareillage à basse tension - Partie 5: Exigences particulières pour les ensembles d'appareillage BT pour installation à l'extérieur, au contact avec le publics - Ensembles d'appareillage pour réseaux de distribution (ERD)

General Information

Status
Published
Publication Date
18-Jun-1998
Current Stage
DELPUB - Deleted Publication
Start Date
13-Jun-2006
Completion Date
26-Oct-2025

Relations

Effective Date
05-Sep-2023
Effective Date
05-Sep-2023

Overview

IEC 60439-5:1996/AMD1:1998 is an amendment to the international standard addressing low-voltage switchgear and controlgear assemblies. Specifically, it focuses on Part 5, which sets out particular requirements for assemblies intended for outdoor installation in public places. This amendment pertains to Cable Distribution Cabinets (CDCs) used for power distribution in public networks.

Published by the International Electrotechnical Commission (IEC), this amendment enhances safety, mechanical strength, and environmental resilience standards for outdoor switchgear to ensure reliable performance in various challenging conditions, such as heavy snowfall and harsh climates.

Key Topics

  • Outdoor Application Conditions
    The amendment introduces a new subclause addressing service conditions specific to outdoor use, including:

    • Exposure to heavy snowfall and snowdrift
    • Requirement to consider arctic climate conditions as normal in certain situations
    • Temperature limits down to -25 °C for installations in extreme cold areas
  • Mechanical Design Requirements
    Updates to mechanical strength testing include:

    • Enhanced provisions for testing the mechanical resistance of the CDC base
    • Verification of mechanical strength using forces applied via steel tubes, targeting the lowest part of the CDC base installed underground
    • Special procedures for designs with permanent supports on the base, including simultaneous force application per formula based on unsupported length
    • New test arrangements and figures (e.g., Figure 9) for mechanical strength verification
  • Material and Component Testing

    • Replacement of axial load testing methods for metal inserts in synthetic materials, ensuring inserts remain securely anchored without damage or cracking in surrounding materials
    • Defined axial loads corresponding to insert sizes (e.g., M4–M12) applied for 10 seconds to verify anchorage integrity
  • Testing and Compliance Verification

    • Addition of mechanical strength test for the base to the type test requirements
    • Definition of test durations and post-test verification of protection degree (minimum IP3XD) to confirm integrity after mechanical loading
    • Inclusion of torsional stress resistance tests with updated diagrams for clarity

Applications

This amendment to IEC 60439-5 is crucial for manufacturers, designers, and installers of outdoor low-voltage switchgear assemblies, particularly Cable Distribution Cabinets deployed in:

  • Public places and urban distribution networks
  • Harsh environmental conditions such as arctic or snowy regions where snow clearance operations occur
  • Power distribution systems requiring high durability and safety against mechanical stresses

By adhering to these enhanced requirements, stakeholders can ensure:

  • Improved reliability and safety of outdoor power distribution cabinets under extreme weather and mechanical load
  • Longevity and structural integrity of assemblies withstanding environmental and operational stresses
  • Compliance with international best practices for public outdoor electrical power distribution infrastructure

Related Standards

  • IEC 60439-1 - Low-voltage switchgear and controlgear assemblies - General rules
  • Other parts of IEC 60439 series detailing requirements for indoor and other specific applications
  • IEC 60529 - Degrees of protection provided by enclosures (IP Code), referenced for protection level IP3XD in this amendment
  • IEC TC 17 series providing broader context for switchgear and controlgear standards

Summary

IEC 60439-5:1996/AMD1:1998 amendment enhances the safety, mechanical robustness, and environmental adaptability of Cable Distribution Cabinets for outdoor use in public places. It establishes rigorous testing protocols for mechanical strength and introduces conditions addressing climatic challenges like heavy snowfall and low temperatures. This amendment supports industry best practices for the design, testing, and verification of outdoor power distribution switchgear ensuring sustained and safe operation in demanding public environments.

Standard

IEC 60439-5:1996/AMD1:1998 - Amendment 1 - Low-voltage switchgear and controlgear assemblies - Part 5: Particular requirements for assemblies intended to be installed outdoors in public places - Cable distribution cabinets (CDCs) for power distribution in networks Released:6/19/1998 Isbn:2831844061

English and French language
11 pages
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Frequently Asked Questions

IEC 60439-5:1996/AMD1:1998 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Amendment 1 - Low-voltage switchgear and controlgear assemblies - Part 5: Particular requirements for assemblies intended to be installed outdoors in public places - Cable distribution cabinets (CDCs) for power distribution in networks". This standard covers: Amendment 1 - Low-voltage switchgear and controlgear assemblies - Part 5: Particular requirements for assemblies intended to be installed outdoors in public places - Cable distribution cabinets (CDCs) for power distribution in networks

Amendment 1 - Low-voltage switchgear and controlgear assemblies - Part 5: Particular requirements for assemblies intended to be installed outdoors in public places - Cable distribution cabinets (CDCs) for power distribution in networks

IEC 60439-5:1996/AMD1:1998 is classified under the following ICS (International Classification for Standards) categories: 29.130.20 - Low voltage switchgear and controlgear; 29.240.99 - Other equipment related to power transmission and distribution networks. The ICS classification helps identify the subject area and facilitates finding related standards.

IEC 60439-5:1996/AMD1:1998 has the following relationships with other standards: It is inter standard links to IEC 60439-5:1996, IEC 60439-5:2006. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

IEC 60439-5:1996/AMD1:1998 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


NORME CEI
INTERNATIONALE
IEC
60439-5
INTERNATIONAL
STANDARD
AMENDEMENT 1
AMENDMENT 1
1998-06
Amendement 1
Ensembles d’appareillage à basse tension –
Partie 5:
Règles particulières pour les ensembles destinés
à être installés à l’extérieur, en des lieux publics –
Ensembles d’appareillage pour réseaux
de distribution (ERD)
Amendment 1
Low-voltage switchgear and controlgear
assemblies –
Part 5:
Particular requirements for assemblies intended
to be installed outdoors in public places –
Cable distribution cabinets (CDCs) for power
distribution in networks
 IEC 1998 Droits de reproduction réservés  Copyright - all rights reserved
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
Commission Electrotechnique Internationale
CODE PRIX
International Electrotechnical Commission
F
PRICE CODE
Pour prix, voir catalogue en vigueur
For price, see current catalogue

– 2 – 60439-5 amend.1 © CEI:1998

AVANT-PROPOS
Le présent amendement a été établi par le sous-comité 17D: Ensembles d’appareillage
à basse tension, du comité d'études 17 de la CEI: Appareillage.

Le texte de cet amendement est issu des documents suivants:

FDIS Rapport de vote
17D/201/FDIS 17D/206/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cet amendement.
___________
Page 14
6 Conditions d'emploi
Ajouter le nouveau paragraphe suivant:
6.2.11 Exposition à de fortes chutes de neige et à des congères
Dans le cas d’installations dans des régions où se produisent de fortes chutes de neige et des
congères qui nécessitent un déneigement, selon accord entre fabricant et utilisateur, on peut
considérer le climat arctique comme une condition normale; néanmoins, la limite inférieure de
température de –25 °C peut être appliquée (voir 8.2.9.2.2).
7 Dispositions constructives
7.1 Caractéristiques mécaniques
7.1.1 Généralités
Ajouter, à la fin de l’addition au troisième alinéa, la référence suivante:
«(voir 8.2.9.6)».
Page 20
8.2 Essais de type
Ajouter, au tableau 7, l’essai suivant à la liste des vérifications et essais supplémentaires:
Numéro Caractéristiques à vérifier Paragraphe Prescriptions
12.6 Essai de résistance mécanique 8.2.9.6 Force à appliquer par l’intermédiaire
de la base d’un tube en acier
60439-5 Amend.1 © IEC:1998 – 3 –

FOREWORD
This amendment has been prepared by subcommittee 17D: Low-voltage switchgear and
controlgear assemblies, of IEC technical committee 17: Switchgear and controlgear.

The text of this amendment is based on the following documents:

FDIS Report on voting
17D/201/FDIS 17D/206/RVD
Full information on the voting for approval of this amendment can be found in the report on
voting indicated in the above table.
___________
Page 15
6 Service conditions
Add the following new subclause:
6.2.11 Exposure to heavy snowfall and snowdrift
For installations in regions where heavy snowfalls and snowdrift occur, which necessitate snow
clearance by ploughing, subject to agreement between manufacturer and user, an arctic
climate can be considered a normal condition; however, the lower temperature limit of –25 °C
may be applied (see 8.2.9.2.2).
7 Design and construction
7.1 Mechanical design
7.1.1 General
Add, at the end of the third paragraph, the following reference:
"(see 8.2.9.6)".
Page 21
8.2 Type tests
Add, in table 7, the following test to the list of additional verifications and tests:
Number Characteristics to be checked Subclause Requirements
number
12.6 Test of mechanical strength of the base 8.2.9.6 Resistance to force imparted
by steel tube
– 4 – 60439-5 amend.1 © CEI:1998

Page 22
8.2.9 Vérification de la tenue mécanique

Cette correction ne concerne que le texte anglais.

Page 28
8.2.9.4 Vérification de la résistance axiale des inserts métalliques dans les matériaux

synthétiques
Remplacer ce paragraphe par ce qui suit:
L’essai doit être réalisé sur un échantillon représentatif de chaque type et dimension d’insert
métallique. Aussi, s’il y a une différence dans l’épaisseur de la forme du matériau entourant un
insert défini, l’essai doit être recommencé pour cette disposition.
Pendant l’essai, l’ERD doit être complètement soutenu pour cette disposition.
Un anneau fileté doit être mis en place dans chaque insert en essai et une force axiale selon le
tableau 18 doit être appliquée pendant 10 s en vue d’extraire l’insert de son ancrage.
La conformité est vérifiée par examen montrant que les inserts restent sans dommage et dans
leur position initiale, et aussi qu’il n’y a pas de fissure dans le matériau les entourant,
constituant l’ancrage de l’insert.
NOTE – Les petites fissures ou bulles d’air qui étaient visibles avant l’essai, mais non affectées par l’application de
la charge axiale, ne sont pas prises en compte.
Tableau 18 – Charge axiale à appliquer aux inserts
Taille de l’insert Charge axiale
N
M4 350
M5 350
M6 500
M8 500
M10 800
M12 800
Page 30
Ajouter le nouveau paragraphe suivant:
8.2.9.6 Vérification de la tenue mécanique du socle
Cet essai doit être réalisé avec l’ERD fixé sur son socle, conformément à la figure 9
...

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