IEC 61914:2021

Cable cleats for electrical installations

IEC 61914:2021 specifies requirements and tests for cable cleats used for securing cables in electrical installations and for intermediate restraints used for holding cables together in formation in electrical installations. Cable cleats provide resistance to electromechanical forces where declared. This document includes cable cleats that rely on a mounting surface specified by the manufacturer for axial and/or lateral retention of cables.
This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:  
requirements for mandrels used in testing rationalised and detailed in the general test requirements (Clause 5);
definition of liner added and test requirements where liners and other optional parts are used;
definitions for LV, MV and HV cables added and test requirements where MV & HV cable are used ;
new corrosion resistance classes for plated products added;
new requirements and test for durability and legibility of markings added;
new test requirements for axial load testing of cleats for more than one cable added;
lateral load test requirements for intermediate restraints added.

Brides de câbles pour installations électriques

L'IEC 61914:2021 spécifie les exigences et les essais relatifs aux brides de câbles utilisées pour la fixation des câbles dans les installations électriques et aux dispositifs intermédiaires de tenue utilisés pour le maintien des câbles en formation dans des installations électriques. Les brides de câbles fournissent une résistance aux forces électromécaniques lorsque cela est déclaré. Le présent document inclut les brides de câbles qui reposent sur une surface de montage spécifiée par le fabricant pour le maintien axial et/ou latéral des câbles.
Cette troisième édition annule et remplace la deuxième édition parue en 2015. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:  
rationalisation des exigences relatives aux mandrins d’essai, détaillées dans la section Généralités sur les essais (Article 5);
ajout de la définition de la fourrure et définition des exigences d’essai dans lesquelles les fourrures et autres accessoires sont utilisés;
ajout des définitions BT, MT et HT pour les câbles et définition des exigences d'essai en cas d'utilisation de câbles MT et HT;
ajout de nouvelles classes de tenue à la corrosion pour les produits revêtus;
ajout de nouvelles exigences et d'un essai de durabilité et de lisibilité des marquages;
ajout de nouvelles exigences d'essai pour les essais de tenue à la charge axiale des brides pour plusieurs câbles;
ajout d’exigences d’essai de tenue à la charge latérale pour les dispositifs intermédiaires de tenue.

General Information

• Status: Published
• Publication Date: 05-Oct-2021
• ICS: 29.120.20 - Connecting devices
• Technical Committee: SC 23A - Cable management systems
• Drafting Committee: MT 16 - TC 23/SC 23A/MT 16
• Current Stage: PPUB - Publication issued
• Start Date: 22-Oct-2021
• Completion Date: 06-Oct-2021

Relations

• Revises: IEC 61914:2015 - Cable cleats for electrical installations
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61914 ®
Edition 3.0 2021-10
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Cable cleats for electrical installations
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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IEC 61914 ®
Edition 3.0 2021-10
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Cable cleats for electrical installations
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.20 ISBN 978-2-8322-4984-0
– 2 – IEC 61914:2021 CMV © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 8
4 General requirements . 10
5 General notes on tests . 10
6 Classification . 11
6.1 Classification according to material . 11
6.1.1 Metallic . 11
6.1.2 Non-metallic . 11
6.1.3 Composite . 11
6.2 Classification according to maximum and minimum temperature . 11
6.3 Classification according to resistance to impact . 12
6.3.1 Very light . 12
6.3.2 Light . 12
6.3.3 Medium . 12
6.3.4 Heavy . 12
6.3.5 Very heavy . 12
6.4 Classification according to type of retention or resistance to
electromechanical forces or both . 12
6.4.1 General . 13
6.4.2 With lateral retention . 13
6.4.3 With axial retention . 13
6.4.4 Resistant to electromechanical forces, withstanding one short circuit . 13
6.4.5 Resistant to electromechanical forces, withstanding more than one
short circuit . 13
6.5 Classification according to environmental influences . 13
6.5.1 Resistant Resistance to ultraviolet light for non-metallic and composite
components . 13
6.5.2 Resistant Resistance to corrosion for metallic and composite . 13
6.6 Classification according to electromagnetic compatibility . 15
6.6.1 Liable to inductive heating . 15
6.6.2 Not liable to inductive heating . 15
7 Marking and documentation . 13
7.1 Marking . 15
7.2 Durability and legibility . 15
7.3 Documentation . 15
8 Construction . 17
9 Mechanical properties. 17
9.1 Requirements . 17
9.2 Impact test . 18
9.3 Lateral load test . 20
9.3.1 Lateral load test for cable cleats . 20
9.3.2 Lateral load test for intermediate restraints . 23
9.4 Axial load tests . 24

9.5 Test for resistance to electromechanical forces . 26
9.5.1 General . 26
9.5.2 For cable cleats and intermediate restraints classified in 6.4.4 . 30
9.5.3 For cable cleats and intermediate restraints classified in 6.4.5 . 30
10 Fire hazards . 30
10.1 Flame propagation . 31
10.2 Smoke emission . 32
10.3 Smoke toxicity . 32
11 Environmental influences . 33
11.1 Resistance to ultraviolet light . 33
11.2 Resistance to corrosion . 33
11.2.1 General . 33
11.2.2 Non-metallic components. 34
11.2.3 Components made of stainless steel . 34
11.2.4 Components made of mild steel or cast iron with metallic coating . 34
11.2.5 Components made of non-ferrous alloys . 35
11.2.6 Salt spray test . 33
12 Electromagnetic compatibility . 36
12.1 Electromagnetic emission . 36
12.2 Inductive heating . 36
Annex A (informative) Examples of cable cleats and intermediate restraints . 37
Annex B (informative) Calculation of forces caused by short-circuit currents . 40
B.1 Characteristics . 40
B.2 Specification of the test current . 43
B.3 Calculation of the mechanical forces between conductors . 43
Annex C (normative) Identification of MV or HV cable used in short-circuit test . 46
Bibliography . 47
List of comments . 48

Figure 1 – Test piston dimensions. 16
Figure 2 – Typical arrangement for impact test . 18
Figure 3 – Typical arrangements for lateral load test for cable cleats . 22
Figure 4 – Typical arrangements for lateral load test for intermediate restraints . 23
Figure 5 – Typical arrangement for axial load test . 25
Figure 6 – Typical assemblies for test for resistance to electromechanical force . 27
Figure 7 – Typical arrangement of three cables in trefoil formation . 29
Figure 8 – Typical arrangement of cables in flat formation . 29
Figure 9 – Typical arrangement of the needle-flame test . 32
Figure A.1 – Metallic strap cable cleat for single or bundled cables . 38
Figure A.2 – Metallic single bolt cable cleat for single cable . 38
Figure A.3 – Metallic two-bolt cable cleat for single cable . 38
Figure A.4 – Composite cable cleat for three cables in trefoil formation . 38
Figure A.5 – Non-metallic cable cleat for single cable . 38
Figure A.6 – Metallic cable cleat for single cable with integral mounting stud . 38
Figure A.7 – Non-metallic cable cleat for three cables in flat formation . 38
Figure A.8 – Metallic cable cleat for use with channel cable support system . 38

– 4 – IEC 61914:2021 CMV © IEC 2021
Figure A.9 – Non-metallic cable cleat for three cables in trefoil formation . 38
Figure A.10 – Non-metallic cable cleat for three cables in trefoil formation with integral
ladder rung clamp . 39
Figure A.11 – Metallic intermediate restraint for three cables in flat formation . 39
Figure A.12 – Composite intermediate restraint for bundled cables . 39
Figure B.1 – Short-circuit current of a far-from-generator short circuit with constant a.c.
component . 41
Figure B.2 – Short-circuit current of a near-to-generator short circuit with decaying a.c.
component . 42
Figure B.3 – Two parallel conductors . 44
...

IEC 61914 ®
Edition 3.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable cleats for electrical installations
Brides de câbles pour installations électriques
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
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The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
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If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
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IEC 61914 ®
Edition 3.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable cleats for electrical installations

Brides de câbles pour installations électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.20 ISBN 978-2-8322-1030-0

– 2 – IEC 61914:2021 © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 8
4 General requirements . 10
5 General notes on tests . 10
6 Classification . 11
6.1 Classification according to material . 11
6.1.1 Metallic . 11
6.1.2 Non-metallic . 11
6.1.3 Composite . 11
6.2 Classification according to maximum and minimum temperature . 12
6.3 Classification according to resistance to impact . 12
6.3.1 Very light . 12
6.3.2 Light . 12
6.3.3 Medium . 12
6.3.4 Heavy . 12
6.3.5 Very heavy . 12
6.4 Classification according to type of retention or resistance to
electromechanical forces or both . 13
6.4.1 General . 13
6.4.2 With lateral retention . 13
6.4.3 With axial retention . 13
6.4.4 Resistant to electromechanical forces, withstanding one short circuit . 13
6.4.5 Resistant to electromechanical forces, withstanding more than one
short circuit . 13
6.5 Classification according to environmental influences . 13
6.5.1 Resistance to ultraviolet light for non-metallic and composite
components . 13
6.5.2 Resistance to corrosion . 13
6.6 Classification according to electromagnetic compatibility . 15
6.6.1 Liable to inductive heating . 15
6.6.2 Not liable to inductive heating . 15
7 Marking and documentation . 15
7.1 Marking . 15
7.2 Durability and legibility . 15
7.3 Documentation . 16
8 Construction . 17
9 Mechanical properties. 17
9.1 Requirements . 17
9.2 Impact test . 17
9.3 Lateral load test . 19
9.3.1 Lateral load test for cable cleats . 19
9.3.2 Lateral load test for intermediate restraints . 21
9.4 Axial load tests . 23
9.5 Test for resistance to electromechanical forces . 24

9.5.1 General . 24
9.5.2 For cable cleats and intermediate restraints classified in 6.4.4 . 27
9.5.3 For cable cleats and intermediate restraints classified in 6.4.5 . 27
10 Fire hazards . 27
10.1 Flame propagation . 27
10.2 Smoke emission . 28
10.3 Smoke toxicity . 28
11 Environmental influences . 29
11.1 Resistance to ultraviolet light . 29
11.2 Resistance to corrosion . 29
11.2.1 General . 29
11.2.2 Non-metallic components. 30
11.2.3 Components made of stainless steel . 30
11.2.4 Components made of mild steel or cast iron with metallic coating . 30
11.2.5 Components made of non-ferrous alloys . 30
11.2.6 Salt spray test . 31
12 Electromagnetic compatibility . 31
12.1 Electromagnetic emission . 31
12.2 Inductive heating . 31
Annex A (informative) Examples of cable cleats and intermediate restraints . 32
Annex B (informative) Calculation of forces caused by short-circuit currents . 34
B.1 Characteristics . 34
B.2 Specification of the test current . 35
B.3 Calculation of the mechanical forces between conductors . 35
Annex C (normative) Identification of MV or HV cable used in short-circuit test . 38
Bibliography . 39

Figure 1 – Test piston dimensions. 16
Figure 2 – Typical arrangement for impact test . 18
Figure 3 – Typical arrangements for lateral load test for cable cleats . 21
Figure 4 – Typical arrangements for lateral load test for intermediate restraints . 22
Figure 5 – Typical arrangement for axial load test .
...