HD 60364-5-52:2011/A11:2017

Low-voltage electrical installations - Part 5-52: Selection and erection of electrical equipment - Wiring systems

IEC 60364-5-52:2009 deals with the selection and erection of wiring systems. This third edition cancels and replaces the second edition, published in 2001, and constitutes a technical revision. The main changes with respect to the previous edition are as follows: - Subclause 521.4 introduces minor changes with regard to busbar trunking systems and powertrack systems. - Subclause 523.6 introduces minor changes with regard to the sizing of cables where harmonic currents are present. - A new sublause 523.9 concerning single-core cables with a metallic covering has been introduced. - Clause 525 introduces changes in the maximum value of voltage drop permitted between the origin of the consumer's installation and the equipment which should not be greater than that given in the relevant annex. - Clause 526 introduces minor changes to electrical connections including additional exceptions for inspection of connections and additional notes. - Clause 528 introduces additional requirements with regard to proximity of underground power and telecommunication cables. - Clause 529 introduces minor changes to selection and erection of wiring systems in relation to maintainability, including cleaning.

Errichten von Niederspannungsanlagen - Teil 5-52: Auswahl und Errichtung elektrischer Betriebsmittel - Kabel- und Leitungsanlagen

Installations électriques à basse-tension - Partie 5-52: Choix et mise en oeuvre des matériels électriques - Canalisations

La CEI 60364-5-52:2009 traite du choix et de la mise en oeuvre des canalisations. Cette troisième édition annule et remplace la deuxième édition, publiée en 2001. Elle constitue une révision technique. Les principaux changements par rapport à l'édition précédente sont les suivants: - Le paragraphe 521.4 apporte des changements mineurs aux canalisations préfabriquées et aux systèmes de conducteurs préfabriqués. - Le paragraphe 523.6 apporte des changements mineurs au dimensionnement des câbles en présence de courants harmoniques. - Un nouveau paragraphe 523.9 a été introduit; il concerne les câbles monoconducteurs à gaine métallique. - L'Article 525 insère des modifications de la valeur maximale de la chute de tension admissible entre l'origine de l'installation et l'équipement de l'utilisateur; il convient que celle-ci ne soit pas supérieure à celle donnée dans l'annexe correspondante. - L'Article 526 apporte des changements mineurs aux connexions électriques, y compris des restrictions relatives à la vérification des connexions et des notes complémentaires. - L'Article 528 introduit des exigences supplémentaires concernant le voisinage des câbles enterrés de réseaux d'énergie et de communications. - L'Article 529 apporte des changements mineurs au choix et à la mise en uvre des canalisations en fonction de la maintenance, comprenant le nettoyage.

Nizkonapetostne električne inštalacije - 5-52. del: Izbira in namestitev električne opreme - Inštalacijski sistemi - Dopolnilo A11

General Information

• Status: Published
• Publication Date: 30-Nov-2017
• Withdrawal Date: 17-Oct-2020
• ICS: 13.260 - Protection against electric shock. Live working
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: CLC/TC 64 - Electrical installations and protection against electric shock
• Drafting Committee: CLC/TC 64 - Electrical installations and protection against electric shock
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 01-Dec-2017
• Due Date: 08-Mar-2019
• Completion Date: 01-Dec-2017
• Ref Project: SIST HD 60364-5-52:2011/A11:2018 - Low-voltage electrical installations - Part 5-52: Selection and erection of electrical equipment - Wiring systems

Relations

• Amends: HD 60364-5-52:2011 - Low-voltage electrical installations - Part 5-52: Selection and erection of electrical equipment - Wiring systems
• Effective Date: 20-Jun-2017

Overview

The HD 60364-5-52:2011/A11:2017 standard, issued by CLC (European Committee for Electrotechnical Standardization), focuses on the selection and erection of wiring systems for low-voltage electrical installations. This amendment to IEC 60364-5-52:2009 reflects technical revisions aimed at ensuring safety, reliability, and compliance with evolving electrical installation practices.

The standard provides updated guidance on the selection, installation, and inspection of electrical equipment wiring systems, taking into account factors such as harmonic currents, voltage drop limits, and protection against mechanical damage. It supports electrical engineers, contractors, and inspection authorities in delivering compliant and durable electrical infrastructure.

Key Topics

• Wiring System Selection
  Guidance on choosing appropriate wiring systems according to installation environment, electrical load, and mechanical protection requirements.

• Voltage Drop Requirements
  Defines the maximum permissible voltage drop between the supply origin and electrical equipment to ensure equipment functionality and energy efficiency.

• Harmonic Currents Impact
  Introduces updates on cable sizing rules when harmonic currents are present, critical for installations with electronic equipment generating non-linear loads.

• Busbar and Powertrack Systems
  Adjusted provisions for the installation and protection of busbar trunking and powertrack systems to enhance safety and maintainability.

• Electrical Connections
  Enhanced requirements for secure and durable electrical connections including exceptions and improved inspection regimes.

• Underground Cable Proximity
  Specifies minimum distances and protection measures for underground power and telecommunication cables to prevent interference and damage.

• Maintainability and Cleaning
  Addresses design and installation to facilitate maintenance tasks and ease of cleaning to sustain system longevity and safety.

Applications

HD 60364-5-52:2011/A11:2017 is applicable to a wide range of low-voltage electrical installations including:

• Residential, commercial, and industrial buildings requiring safe and efficient wiring systems.
• New electrical infrastructure and retrofit projects seeking compliance with current European regulations.
• Installations involving complex equipment susceptible to harmonic distortion due to non-linear loads.
• Underground and overhead cable installations requiring strict adherence to spacing and protection protocols.
• Maintenance planning for electrical networks, ensuring safety during inspections and repair activities.

By following this standard, professionals can minimize electrical hazards such as short circuits, voltage drops, and mechanical damage to electrical cabling, while optimizing installation layout and operational reliability.

Related Standards

• IEC 60364 Series – Comprehensive standards covering electrical installations in buildings, including design, selection, erection, and verification.
• HD 60364-5-52:2011 – The base document for wiring systems prior to the A11 amendment.
• CENELEC Internal Regulations – Governs the implementation of European harmonized standards across member countries.
• National Electrical Safety Codes – Complementary standards ensuring local compliance and safety conditions (e.g., Danish Executive Orders referenced in the amendment).

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Keywords: low-voltage electrical installations, wiring systems, electrical equipment selection, voltage drop, harmonic currents, busbar systems, underground cables, electrical connections, electrical safety standards, CLC standard, IEC 60364 amendment.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2018
1L]NRQDSHWRVWQHHOHNWULþQHLQãWDODFLMHGHO,]ELUDLQQDPHVWLWHYHOHNWULþQH
RSUHPH,QãWDODFLMVNLVLVWHPL'RSROQLOR$
Low-voltage electrical installations - Part 5-52: Selection and erection of electrical
equipment - Wiring systems
Errichten von Niederspannungsanlagen - Teil 5-52: Auswahl und Errichtung elektrischer
Betriebsmittel - Kabel- und Leitungsanlagen
Installations électriques à basse-tension - Partie 5-52: Choix et mise en oeuvre des
matériels électriques - Canalisations
Ta slovenski standard je istoveten z: HD 60364-5-52:2011/A11:2017
ICS:
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONIZATION DOCUMENT HD 60364-5-52:2011/A11

DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT
December 2017
ICS 13.260; 91.140.50
English Version
Low-voltage electrical installations - Part 5-52: Selection and
erection of electrical equipment - Wiring systems
Installations électriques à basse-tension - Partie 5-52: Errichten von Niederspannungsanlagen - Teil 5-52:
Choix et mise en oeuvre des matériels électriques - Auswahl und Errichtung elektrischer Betriebsmittel - Kabel-
Canalisations und Leitungsanlagen
This amendment A11 modifies the Harmonization Document HD 60364-5-52:2011; it was approved by CENELEC on 2017-10-18.
CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of
this amendment at national level.
Up-to-date lists and bibliographical references concerning such national implementations may be obtained on application to the CEN-
CENELEC Management Centre or to any CENELEC member.
This amendment exists in three official versions (English, French, German).
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. HD 60364-5-52:2011/A11:2017 E

European foreword
This document (HD 60364-5-52:2011/A11:2017) has been prepared by CLC/TC 64, "Electrical
installations and protection against electric shock".
The following dates are fixed:
• latest date by which this document has (dop) 2018-10-18
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-10-18
standards conflicting with this document
have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
1 Modifications to Annex ZB
Delete the following current Special national condition for Denmark:
Country Clause Special national condition
Denmark 522.8.10 In Denmark the following applies: The requirements are not required for
cables with a rated voltage not exceeding 50 V ac or 120 V d.c. Cables shall
be buried at least 0,35 m under terrain. Cables buried less than 0,7 m under
terrain shall be protected by conduits, U-profiles or sheets. Cables buried
more than 0,7 m under terrain shall be without additional mechanical
protection, when a marking band is placed approximately 0,2 m above the
cable. By more than one cable with less than 0,2 m between the outer cables
only one marking band is required. Cables coming from the soil up in free air
shall be mechanically protected as well under the terrain as above the terrain.
NOTE Conduits or galvanized iron, steel or plastic conduits in accordance to
DS 2119 for a working pressure of 0,6 MPa can be used for protection.
528.1 DK SNC: In Denmark, the following requirement applies: Installations without
connection to the low-voltage installation and which are installed, supervised
and maintained by other than skilled persons shall be separated from th
...