IEC 60439-4:1990/AMD2:1999
(Amendment)Amendment 2 - Low-voltage switchgear and controlgear assemblies. Part 4: Particular requirements for assemblies for construction sites (ACS)
Amendment 2 - Low-voltage switchgear and controlgear assemblies. Part 4: Particular requirements for assemblies for construction sites (ACS)
Amendement 2 - Ensembles d'appareillage à basse tension. Quatrième partie: Règles particulières pour ensembles de chantier (EC)
General Information
- Status
- Published
- Publication Date
- 27-Apr-1999
- Technical Committee
- SC 121B - Low-voltage switchgear and controlgear assemblies
- Current Stage
- DELPUB - Deleted Publication
- Start Date
- 14-Jun-2004
- Completion Date
- 26-Oct-2025
Relations
- Effective Date
- 05-Sep-2023
- Effective Date
- 05-Sep-2023
IEC 60439-4:1990/AMD2:1999 Overview
IEC 60439-4:1990/AMD2:1999 is the second amendment to the International Electrotechnical Commission's standard for low-voltage switchgear and controlgear assemblies tailored specifically for construction sites (ACS). This amendment updates and refines requirements for the design, accessibility, mechanical robustness, and safety of switchgear assemblies deployed in challenging construction environments. It supplements, modifies, or replaces clauses from the earlier IEC 60439-1 standards and related amendments, ensuring enhanced safety, reliability, and compatibility.
Produced by IEC Technical Committee 17, Subcommittee 17D (Low-voltage switchgear and controlgear assemblies), this amendment aligns with other IEC electrical installation standards, including IEC 60364 series, which governs electrical safety and protection in buildings and special installations like construction and demolition sites.
Key Topics in Amendment 2
Enhanced Protection Ratings:
Modification from IP43 to IP44 for switchgear enclosures improves ingress protection against dust and water, crucial for harsh construction site conditions.Nameplate Improvements:
Updated specifications mandate comprehensive labeling on nameplates, extending information requirements to ensure correct identification and safe operation.Accessibility and Control Requirements:
The main switch actuator must be easily accessible in accordance with IEC 60364-7-704, facilitating rapid operation during emergencies or routine maintenance.Mechanical Shock Testing:
The standard introduces a shock test involving a single pulse half-sine wave with 500 m/s² peak acceleration over 11 milliseconds, simulating impacts experienced on-site to verify mechanical resilience.Functional Unit Specifications:
Clarified requirements for outgoing and incoming units, including mandatory residual current devices for IT systems on each socket outlet, enhance personnel protection against electrical faults.Removal and Clarification of Clauses:
Certain clauses related to accessibility and compatibility have been refined or removed to streamline the standard and better focus on construction site-specific needs.Compliance with Related IEC Standards:
References to IEC 60364-4-46 and IEC 60364-7-704 underline integration with building electrical protection norms and specialized construction site installation rules.
Applications for Construction Sites
IEC 60439-4 Amendment 2 is essential for manufacturers, electrical engineers, and site managers who specify, design, or install low-voltage switchgear and controlgear assemblies on construction sites. Its provisions ensure:
High Safety Standards:
Assemblies conform to stringent protection and mechanical robustness requirements, reducing risks of electric shock, equipment failure, and hazards arising in variable site conditions.Operational Reliability:
Enhanced ingress protection and shock resistance cater to rugged environments with dust, moisture, and mechanical impacts, promoting uninterrupted power distribution and control.Regulatory Compliance:
Aligning with the latest international amendments supports conformity with national and international electrical safety regulations, easing approval and inspection processes.Compatibility and Interchangeability:
Standardized series and design elements facilitate modular assemblies and system expansions, optimizing resource use and maintenance efficiency.
Related IEC Standards
For comprehensive compliance and safety management on construction sites, IEC 60439-4 works in conjunction with:
IEC 60439-1 (Low-voltage switchgear assemblies):
Provides general rules and testing requirements for low-voltage switchgear.IEC 60364 Series:
- Part 4-46: Protection for safety - isolation and switching
- Part 7-704: Special installations or locations - construction and demolition sites
IEC 60068-2-27:
Environmental testing procedures including mechanical shock tests.
These complementary standards provide a holistic framework for the design, installation, testing, and maintenance of electrical systems in building and construction environments.
Keywords: IEC 60439-4 amendment 2, low-voltage switchgear, controlgear assemblies, construction site switchgear, ACS, electrical safety standards, IP44 rating, mechanical shock test, residual current device, IEC electrical installations, construction site electrical safety.
Frequently Asked Questions
IEC 60439-4:1990/AMD2:1999 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Amendment 2 - Low-voltage switchgear and controlgear assemblies. Part 4: Particular requirements for assemblies for construction sites (ACS)". This standard covers: Amendment 2 - Low-voltage switchgear and controlgear assemblies. Part 4: Particular requirements for assemblies for construction sites (ACS)
Amendment 2 - Low-voltage switchgear and controlgear assemblies. Part 4: Particular requirements for assemblies for construction sites (ACS)
IEC 60439-4:1990/AMD2:1999 is classified under the following ICS (International Classification for Standards) categories: 29.130.20 - Low voltage switchgear and controlgear. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 60439-4:1990/AMD2:1999 has the following relationships with other standards: It is inter standard links to IEC 60439-4:1990, IEC 60439-4:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
IEC 60439-4:1990/AMD2:1999 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
60439-4
INTERNATIONAL
STANDARD
AMENDEMENT 2
AMENDMENT 2
1999-04
Amendement 2
Ensembles d'appareillage à basse tension –
Quatrième partie:
Règles particulières pour ensembles
de chantier (EC)
Amendment 2
Low-voltage switchgear and controlgear
assemblies –
Part 4:
Particular requirements for assemblies
for construction sites (ACS)
IEC 1999 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
CODE PRIX
Commission Electrotechnique Internationale
E
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
– 2 – 60439-4 amend. 2 © CEI:1999
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 RVD
17D/212A/FDIS 17D/219/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 4
Remplacer la fin de la dernière phrase par ce qui suit:
Les articles de la présente norme complètent, modifient ou remplacent les articles corres-
pondants de la CEI 60439-1 (1992), du corrigendum (1993), de l'amendement 1 (1995) et de
1)
l'amendement 2 (1996) .
Page 6
Les publications suivantes de la CEI sont citées dans la présente norme:
Ajouter les publications suivantes:
60364-4-46:1981, Installations électriques des bâtiments – Partie 4: Protection pour assurer la
sécurité – Chapitre 46: Sectionnement et commande
60364-7-704:1989, Installations électriques des bâtiments – Partie 7: Règles pour les installa-
tions et emplacements spéciaux – Section 704: Installations de chantiers
Page 12
Changer le numéro du paragraphe 2.9 en 2.11.
Changer le numéro du paragraphe 2.9.1 en 2.11.1.
Changer le numéro du paragraphe 2.9.2 en 2.11.2.
Changer le numéro du paragraphe 2.9.3 en 2.11.3.
Changer le numéro du paragraphe 2.9.4 en 2.11.4.
Changer le numéro du paragraphe 2.9.5 en 2.11.5.
Changer le numéro du paragraphe 2.9.6 en 2.11.6.
Changer le numéro du paragraphe 2.10 en 2.12.
2.12 Série d’ensembles de chantiers compatibles
Ajouter dans la note: «et en 7.5.4».
___________
1)
Une nouvelle édition est à paraître. Elle sera alors l'édition de référence.
60439-4 Amend. 2 © IEC:1999 – 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 RVD
17D/212A/FDIS 17D/219/RVD
Full information on the voting for the approval of this amendment can be found in the report on
voting indicated in the above table.
___________
Page 5
Replace the end of the last sentence as follows:
The clauses of this standard supplement, modify or replace clauses in IEC 60439-1 (1992),
1)
together with the corrigendum (1993), amendment 1 (1995), amendment 2 (1996) .
Page 7
The following IEC publications are quoted in this standard:
Add the following publications:
60364-4-46:1981, Electrical installations of buildings – Part 4: Protection for safety –
Chapter 46: Isolation and switching
60364-7-704:1989, Electrical installations of buildings – Part 7: Requirements for special
installations or locations – Section 704: Construction and demolition site installations
Page 13
Change subclause number 2.9 to 2.11.
Change subclause number 2.9.1 to 2.11.1.
Change subclause number 2.9.2 to 2.11.2.
Change subclause number 2.9.3 to 2.11.3.
Change subclause number 2.9.4 to 2.11.4.
Change subclause number 2.9.5 to 2.11.5.
Change subclause number 2.9.6 to 2.11.6.
Change subclause number 2.10 to 2.12.
2.12 Series of compatible assemblies for construction sites
Add in the note "and in 7.5.4".
___________
1)
A new edition is to be published, and will be the reference edition when published.
– 4 – 60439-4 amend. 2 © CEI:1999
Page 14
5.1 Plaques signalétiques
Remplacer, à la troisième ligne du premier alinéa, «de a) à e)» par «de a) à e) et en g)».
Page 18
7.2.1.1
Remplacer, dans les dernières phrases du premier alinéa et du troisième alinéa de ce
paragraphe, «IP43» par «IP44».
7.2.1.3
Remplacer, dans la dernière phrase de ce paragraphe, «IP43» par «IP44».
Page 20
7.2.1.5
Remplacer «7.2.1.5 Ne s’applique pas» par «7.2.1.6 Ne s’applique pas».
7.2.3 Parties accessibles d’un EC
Remplacer la deuxième phrase de ce paragraphe par «L’organe de commande de l’interrupteur
principal doit être aisément accessible (voir l'article 537 de la CEI 60364-7-704)».
Page 22
Ajouter, après le paragraphe 7.4.5, le nouveau paragraphe 7.4.6 suivant:
7.4.6 Prescriptions relatives à l’accessibilité en service par du personnel autorisé
Ne s’applique pas.
Page 24
Supprimer les paragraphes suivants: 7.5.2, 7.5.2.2 et 7.5.2.3.
7.5.4.1 Remplacer «(voir 2.10)» par «(voir 2.12)».
Page 26
Tableau 7
Changer le numéro du paragraphe 8.2.8 en 8.2.9.
Changer le numéro du paragraphe 8.2.9 en 8.2.10.
...
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