SIST EN IEC 61914:2022
(Main)Cable cleats for electrical installations (IEC 61914:2021)
Cable cleats for electrical installations (IEC 61914:2021)
This International Standard 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.
Various types of cable cleats and intermediate restraints are shown in Annex A.
NOTE Requirements for manufacturers in this document also apply to importers and responsible vendors where appropriate.
This document does not apply to cable ties.
Kabelhalter für elektrische Installationen (IEC 61914:2021)
Brides de câbles pour installations électriques (IEC 61914:2021)
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.
Kabelske objemke za elektroinštalacije (IEC 61914:2021)
Ta mednarodni standard določa zahteve in preskuse za kabelske objemke, ki se uporabljajo za pritrditev kablov v električnih inštalacijah, ter vmesne naslone, ki se uporabljajo za ohranjanje formacije kablov v električnih inštalacijah. Kabelske objemke zagotavljajo odpornost na morebitne elektromehanske sile. Ta standard vključuje kabelske objemke za montažo na površino, na katero se po navedbah proizvajalca lahko pritrdi kable po osi in/ali bočno.
OPOMBA: Zahteve za proizvajalce v tem dokumentu veljajo tudi za uvoznike in odgovorne prodajalce, kadar je primerno.
Ta standard se ne uporablja za kabelske spojke.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2022
Nadomešča:
SIST EN 61914:2016
Kabelske objemke za elektroinštalacije (IEC 61914:2021)
Cable cleats for electrical installations (IEC 61914:2021)
Kabelhalter für elektrische Installationen (IEC 61914:2021)
Brides de câbles pour installations électriques (IEC 61914:2021)
Ta slovenski standard je istoveten z: EN IEC 61914:2021
ICS:
29.120.99 Druga električna dodatna Other electrical accessories
oprema
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61914
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2021
ICS 29.120.20 Supersedes EN 61914:2016 and all of its amendments
and corrigenda (if any)
English Version
Cable cleats for electrical installations
(IEC 61914:2021)
Brides de câbles pour installations électriques Kabelhalter für elektrische Installationen
(IEC 61914:2021) (IEC 61914:2021)
This European Standard was approved by CENELEC on 2021-11-10. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61914:2021 E
European foreword
The text of document 23A/976/FDIS, future edition 3 of IEC 61914, prepared by SC 23A "Cable
management systems" of IEC/TC 23 "Electrical accessories" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 61914:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-08-10
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-11-10
document have to be withdrawn
This document supersedes EN 61914:2016 and all of its amendments and corrigenda (if any).
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.
This document has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association, and supports essential
requirements of EU Directive(s) / Regulation(s).
For the relationship with EU Directive(s) / Regulation(s), see informative Annex ZZ, which is an
integral part of this document.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61914:2021 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60068-2-75 NOTE Harmonized as EN 60068-2-75
IEC 60364-5-51 NOTE Harmonized as HD 60364-5-51
IEC 60909 (series) NOTE Harmonized as EN 60909 (series)
IEC 60909-0 NOTE Harmonized as EN 60909-0
IEC 61537:2006 NOTE Harmonized as EN 61537:2007 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60060-1 2010 High-voltage test techniques – Part 1: General EN 60060-1 2010
definitions and test requirements
IEC 60502-1 2021 Power cables with extruded insulation and their - -
accessories for rated voltages from 1 kV (Um =
1,2 kV) up to 30 kV (Um = 36 kV) - Part 1:
Cables for rated voltages of 1 kV (Um = 1,2 kV)
and 3 kV (Um = 3,6 kV)
IEC 60695-11-5 2016 Fire hazard testing – Part 11-5: Test flames – EN 60695-11-5 2017
Needle-flame test method – Apparatus,
confirmatory test arrangement and guidance
ISO 1461 2009 Hot dip galvanized coatings on fabricated iron EN ISO 1461 2009
and steel articles – Specifications and test
methods
ISO 2081 2018 Metallic and other inorganic coatings – EN ISO 2081 2018
Electroplated coatings of zinc with
supplementary treatments on iron or steel
ISO 3575 2016 Continuous hot dip zinc-coated and zinc-iron - -
alloy-coated carbon steel sheet of commercial
and drawing qualities
ISO 4287 1997 Geometrical product specifications (GPS) – EN ISO 4287 1998
Surface texture: Profile method – Terms,
definitions and surface texture parameters
+ A1 2009
ISO 4892-2 2013 Plastics – Methods of exposure to laboratory EN ISO 4892-2 2013
light sources – Part 2: Xenon-arc lamps
ISO 4998 2014 Continuous hot-dip zinc-coated and zinc-iron - -
alloy-coated carbon sheet steel of structural
quality
ISO 9227 2017 Corrosion tests in artificial atmospheres – Salt EN ISO 9227 2017
spray tests
ISO 14713-1 2017 Zinc coatings - Guidelines and recommendations EN ISO 14713-1 2017
for the protection against corrosion of iron and
Publication Year Title EN/HD Year
steel in structures - Part 1: General principles of
design and corrosion resistance
ISO 14713-2 2019 Zinc coatings - Guidelines and recommendations EN ISO 14713-2 2020
for the protection against corrosion of iron and
steel in structures - Part 2: Hot dip galvanizing
- - Continuously hot-dip coated steel flat products EN 10346 2015
for cold forming - Technical delivery conditions
Annex ZZ
(informative)
Relationship between this European Standard and the safety
objectives of Directive 2014/35/EU [2014 OJ L96] aimed to be
covered
This European Standard has been prepared under a Commission’s standardization request relating to
harmonized standards in the field of the Low Voltage Directive, M/511, to provide one voluntary means
of conforming to safety objectives of Directive 2014/35/EU of the European Parliament and of the
Council of 26 February 2014 on the harmonization of the laws of the Member States relating to the
making available on the market of electrical equipment designed for use within certain voltage limits
[2014 OJ L96].
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZZ.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding safety objectives of
that Directive, and associated EFTA regulations.
Table ZZ.1 — Correspondence between this European Standard
and Annex I of Directive 2014/35/EU [2014 OJ L96]
Safety objectives of Clause(s) / sub-clause(s) Remarks / Notes
Directive 2014/35/EU of this EN
(1)(a) Clause 7 Marking and
documentation
(1)(b) Clause 4 General requirements
Clause 7 Marking and
documentation
Clause 8 Construction
Clause 9 Mechanical properties
(1)(c) Clause 3 Terms, definitions and
abbreviations
Clause 4 General requirements
(2)(a) Not applicable Cable cleats do not carry current and
are not connected to any live parts.
Risk assessment shows there is no
danger from direct or indirect
contact.
(2)(b) Not applicable Cable cleats do not carry current and
are not connected to any live parts.
Risk assessment shows there is no
danger from temperature, arcs or
radiation.
(2)(c) Clause 4 General requirements
Clause 8 Construction
Clause 9 Mechanical properties
Clause 10 Fire Hazards
Clause 11 Environmental
influences
Clause 12 Electromagnetic
compatibility
(2)(d) Not applicable Cable cleats do not carry current and
are not connected to any live parts.
Risk assessment shows that there is
no need for insulation.
(3)(a) Clause 4 General requirements
Clause 8 Construction
Clause 9 Mechanical properties
(3)(b) Clause 10 Fire Hazards
Clause 11 Environmental
influences
Clause 12 Electromagnetic
compatibility
(3)(c) Subclause 9.5 Test for resistance
to electromagnetic force
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
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
IEC 61914:2021 © IEC 2021 – 3 –
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 . 24
Figure 6 – Typical assemblies for test for resistance to electromechanical force . 25
Figure 7 – Typical arrangement of three cables in trefoil formation . 25
Figure 8 – Typical arrangement of cables in flat formation . 26
Figure 9 – Typical arrangement of the needle-flame test . 28
Figure A.1 – Metallic strap cable cleat for single or bundled cables . 32
Figure A.2 – Metallic single bolt cable cleat for single cable . 32
Figure A.3 – Metallic two-bolt cable cleat for single cable . 32
Figure A.4 – Composite cable cleat for three cables in trefoil formation . 32
Figure A.5 – Non-metallic cable cleat for single cable . 32
Figure A.6 – Metallic cable cleat for single cable with integral mounting stud . 32
Figure A.7 – Non-metallic cable cleat for three cables in flat formation . 32
Figure A.8 – Metallic cable cleat for use with channel cable support system . 32
Figure A.9 – Non-metallic cable cleat for three cables in trefoil formation . 32
– 4 – IEC 61914:2021 © IEC 2021
Figure A.10 – Non-metallic cable cleat for three cables in trefoil formation with integral
ladder rung clamp . 33
Figure A.11 – Metallic intermediate restraint for three cables in flat formation . 33
Figure A.12 – Composite intermediate restraint for bundled cables . 33
Figure B.1 – Short-circuit current of a far-from-generator short circuit with constant a.c.
component . 34
Figure B.2 – Short-circuit current of a near-to-generator short circuit with decaying a.c.
component . 35
Figure B.3 – Two parallel conductors . 36
Table 1 – Maximum temperature for permanent application . 12
Table 2 – Minimum temperature for permanent application . 12
Table 3 – Classification for resistance against corrosion for stainless steel components . 14
Table 4 – Classification for resistance against corrosion for coated mild steel or cast-
iron components . 14
Table 5 – Impact test values . 19
Table 6 – Component compliance and classification for resistance against corrosion . 29
Table 7 – Zinc coating thickness of reference materials . 30
IEC 61914:2021 © IEC 2021 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CABLE CLEATS FOR ELECTRICAL INSTALLATIONS
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 61914 has been prepared by subcommittee 23A: Cable management systems, of IEC
technical committee 23: Electrical accessories. It is an International Standard.
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:
a) requirements for mandrels used in testing rationalised and detailed in the general test
requirements (Clause 5);
b) definition of liner added and test requirements where liners and other optional parts are
used;
c) definitions for LV, MV and HV cables added and test requirements where MV & HV cable
are used ;
d) new corrosion resistance classes for plated products added;
e) new requirements and test for durability and legibility of markings added;
f) new test requirements for axial load testing of cleats for more than one cable added;
– 6 – IEC 61914:2021 © IEC 2021
g) lateral load test requirements for intermediate restraints added.
The text of this International Standard is based on the following documents:
FDIS Report on voting
23A/976/FDIS 23A/982/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
In this standard, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– notes: in smaller roman type.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
or the correct understanding of its
contains colours which are considered to be useful f
contents. Users should therefore print this document using a colour printer.
IEC 61914:2021 © IEC 2021 – 7 –
CABLE CLEATS FOR ELECTRICAL INSTALLATIONS
1 Scope
This International Standard 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.
Various types of cable cleats and intermediate restraints are shown in Annex A.
NOTE Requirements for manufacturers in this document also apply to importers and responsible vendors where
appropriate.
This document does not apply to cable ties.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 60502-1, Power cables with extruded insulation and their accessories for rated voltages
from 1 kV (U = 1,2 kV) up to 30 kV (U = 36 kV) – Part 1: Cables for rated voltages of 1 kV
m m
(U = 1,2 kV) and 3 kV (U = 3,6 kV)
m m
IEC 60695-11-5, Fire hazard testing – Part 11-5: Test flames – Needle-flame test method –
Apparatus, confirmatory test arrangement and guidance
ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles – Specifications and
test methods
ISO 2081, Metallic and other inorganic coatings – Electroplated coatings of zinc with
supplementary treatments on iron or steel
ISO 3575, Continuous hot dip zinc-coated and zinc-iron alloy-coated carbon steel sheet of
commercial and drawing qualities
ISO 4287, Geometrical Product Specifications (GPS) – Surface texture: Profile method –Terms,
definitions and surface texture parameters
ISO 4892-2, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-arc
lamps
ISO 4998, Continuous hot-dip zinc-coated and zinc-iron alloy-coated carbon steel sheet of
structural quality
ISO 9227, Corrosion tests in artificial atmospheres – Salt spray tests
– 8 – IEC 61914:2021 © IEC 2021
ISO 14713-1, Zinc coatings – Guidelines and recommendations for the protection against
corrosion of iron and steel in structures – Part 1: General principles of design and corrosion
resistance
ISO 14713-2, Zinc coatings – Guidelines and recommendations for the protection against
corrosion of iron and steel in structures – Part 2: Hot dip galvanizing
EN 10346, Continuously hot-dip coated steel flat products for cold forming – Technical delivery
conditions
3 Terms, definitions and abbreviations
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
cable cleat
device provided with a means of attachment to a mounting surface and that provides securing
of cables when installed at intervals along the length of cables
Note 1 to entry: Examples of mounting surfaces that may be specified are ladder, tray, strut (see Figure A.8) or rail.
Hardware, such as screws or bolts, needed to secure cable cleats to the mounting surface is not necessarily supplied
with cable cleats.
Note 2 to entry: Some examples of cable cleats are shown in Annex A (see Figure A.1 to Figure A.10). These
examples do not limit the use of other cable cleat designs that conform to the requirements of this document.
3.2
intermediate restraint
cable retaining device intended to be used with cable cleats, without being attached to a
mounting surface, to hold cables together in formation and/or to provide resistance to
electromechanical forces
3.3
metallic
consisting of metal only
3.4
non-metallic
consisting of non-metallic material only
3.5
composite
consisting of metallic and non-metallic materials
Note 1 to entry: Fibre reinforced resin materials are not considered to be composite under this definition.
Note 2 to entry: Materials include any materials supplied by the manufacturer as part of a cable cleat or intermediate
restraint or with a cable cleat or intermediate restraint in the same packaging. This may include fixings such as nuts,
bolts, screws, washers, springs and pins. Fixings supplied by the installer are not considered in this document.
IEC 61914:2021 © IEC 2021 – 9 –
3.6
short-circuit current
overcurrent resulting from a circuit condition in which the current flows through an abnormal or
unintended path of negligible impedance between live conductors, or between a live conductor
and an earth, having a difference in potential under normal operating conditions
3.7
peak short-circuit current
i
p
maximum possible instantaneous value of the short-circuit current
SEE: Annex B
3.8
initial r.m.s. symmetrical short-circuit current
I"
k
r.m.s. value of the a.c. symmetrical component of a short-circuit current, applicable at the
instant of the short circuit if the impedance remains at the zero-time value
SEE: Annex B
3.9
decaying aperiodic component of short-circuit current
i
d.c.
mean value between the top and bottom envelope of a short-circuit current decaying from an
initial value to zero
SEE: Annex B
3.10
steady-state short-circuit current
I
k
r.m.s. value of the short-circuit current which remains after the decay of the transient
phenomena
SEE: Annex B
3.11
trefoil formation
formation of three cables so laid as to be mutually equidistant
Note 1 to entry: Viewed in cross-section, the lines joining the cable centres form an equilateral triangle
(see Figure 7).
3.12
flat formation
formation of a number of cables laid in a plane, usually with equal spacing between adjacent
cables (see Figure 8)
3.13
electromechanical forces
induced forces acting on current-carrying conductors
3.14
retention
limiting the lateral and/or axial movement of the cable
– 10 – IEC 61914:2021 © IEC 2021
3.15
securing
fixing to or from a mounting surface
3.16
environmental influences
capacity for environmental factors to have an effect on the intended function of cable cleats
and/or intermediate restraints (e.g. effect of corrosive substances or solar radiation, etc.)
3.17
LV cables
cables with a rated voltage of 1,0 kV ac, 1,5 kV dc or less
3.18
MV or HV cables
cables with a rated voltage of more than 1,0 kV ac or 1,5 kV dc
3.19
liner
polymeric component between the cable and the cable cleat or intermediate restraint
3.20
product type
group of cable cleats for which only the cable or bundle diameter may be changed
Note 1 to entry: For guidance in determining product types, cable cleats or intermediate restraints having material,
design, construction characteristics, and classifications according to Clause 6 below, in common, are considered to
be the same product type.
4 General requirements
Products covered by this document shall be so designed and constructed that, when assembled
and installed as for normal use according to the manufacturer’s instructions, they ensure
securing and/or holding in formation of cables as declared in accordance with Clause 6 and
shall not cause damage to the cable.
Compliance is checked by the relevant tests specified in this document.
5 General notes on tests
5.1 Tests according to this document are type tests.
– Products of all sizes shall comply with Clause 8 and 9.1 a).
– Where cleats or intermediate restraints may be supplied with optional extra parts (e.g.
liners), all tests shall be performed on the product without any of the optional parts. Where
the addition of any optional part affects the performance of the product (e.g. the axial load
performance with the addition of a liner), the tests shall be repeated with the optional parts
in place.
– For the requirements in 9.1 b), 9.1 c) and 9.1 d) where there are a number of cable cleats
in a range, the range is divided into one or more product types. In this case, the smallest
and the largest size of cable cleat of each type are tested.
– The test for compliance with 9.1 e) is performed on the set of samples selected as defined
in 9.5.1.
IEC 61914:2021 © IEC 2021 – 11 –
5.2 Unless otherwise specified, all tests shall be carried out on three new samples of each
size selected as specified in 5.1, assembled and installed as for normal use according to the
manufacturer’s instructions. Where a cable cleat is designed to accommodate more than one
cable the number, size and shape of the mandrels used in the test shall represent the number,
size and shape of the cables for which the cable cleat is intended.
5.3 Tests on non-metallic and composite cable cleats and intermediate restraints and any
test that includes a liner shall not commence earlier than 168 h after manufacture.
5.4 Unless otherwise specified, the tests shall be carried out at an ambient temperature of
+5
(23 ) °C.
−5
When toxic or hazardous processes are used, due regard shall be taken of the safety of persons
within the test area.
5.5 Metal mandrels used in testing shall be made from carbon steel, stainless steel, brass or
aluminium. Where testing is performed at a temperature below 105 °C, mandrels may be made
from polyamide or HDPE. All mandrels shall have a surface roughness less than or equal to
7 µm Ra in accordance with ISO 4287.
5.6 Compliance with this document is satisfied if all the applicable test requirements are
achieved. If only one of the samples does not satisfy a test due to a manufacturing fault, then
that test and any preceding one which may have influenced the results of the test shall be
repeated and also the tests which follow shall be made in the same required sequence on
another full set of samples, all of which shall comply with the requirements.
The applicant, when submitting the first set of samples, may also submit an additional set of
samples, which may be necessary should one sample fail. The test house should then, without
further request, test the additional set of samples and should only reject if a further failure
occurs. If the additional set of samples is not submitted at the same time, a failure of one sample
would entail rejection.
6 Classification
6.1 Classification according to material
6.1.1 Metallic
See 3.3 and examples in Annex A.
6.1.2 Non-metallic
See 3.4 and examples in Annex A.
6.1.3 Composite
See 3.5 and examples in Annex A.
– 12 – IEC 61914:2021 © IEC 2021
6.2 Classification according to maximum and minimum temperature
Table 1 – Maximum temperature for permanent application
A. Maximum temperature
°C
+ 40
+ 60
+ 85
+ 105
+ 120
Table 2 – Minimum temperature for permanent application
B. Minimum temperature
°C
+ 5
− 5
− 15
− 25
− 40
− 60
For temperature values above 120 °C and below −60 °C, the manufacturer may declare
temperatures outside the values provided in Table 1 and Table 2 above.
6.3 Classification according to resistance to impact
6.3.1 Very light
See Table 5.
6.3.2 Light
See Table 5.
6.3.3 Medium
See Table 5.
6.3.4 Heavy
See Table 5.
6.3.5 Very heavy
See Table 5.
IEC 61914:2021 © IEC 2021 – 13 –
6.4 Classification according to type of retention or resistance to electromechanical
forces or both
6.4.1 General
Manufacturers of cable cleats shall declare a classification under 6.4.2 and may also declare a
classification under 6.4.3. Manufacturers of cable cleats may also declare a classification under
6.4.4 or 6.4.5.
Manufacturers of intermediate restraints shall declare a classification under 6.4.2 and under
6.4.4 or 6.4.5 in association with cable cleats.
6.4.2 With lateral retention
Tested in accordance with 9.3.
6.4.3 With axial retention
Tested in accordance with 9.4.
NOTE The axial retention test result is for guidance purposes as it is not possible to replicate cables using mandrels.
6.4.4 Resistant to electromechanical forces, withstanding one short circuit
Tested in accordance with 9.5.2.
6.4.5 Resistant to electromechanical forces, withstanding more than one short
circuit
Tested in accordance with 9.5.3.
NOTE The intent for cable cleats and intermediate restraints classified under 6.4.5 is that after one short-circuit
application, the cable cleat and intermediate restraints, if used, will continue to perform as designed and tested
according to this document. The physical condition of the cable cleats and intermediate restraints after short-circuit
application has only been evaluated under laboratory conditions. The continued use of the cable cleats and
intermediate restraints, if used, following an actual short-circuit incident, is solely at the discretion of the party
responsible for the installation.
6.5 Classification according to environmental influences
6.5.1 Resistance to ultraviolet light for non-metallic and composite components
6.5.1.1 Not declared
No resistance to UV light is claimed.
6.5.1.2 Resistant to ultraviolet light
Tested in accordance with 11.1.
6.5.2 Resistance to corrosion
6.5.2.1 General
If components within the cable cleat or intermediate restraint have different classifications, then
the manufacturer shall declare all relevant classifications.
6.5.2.2 Non-metallic components
Non-metallic components are considered to be inherently resistant to corrosion and do not
require testing.
– 14 – IEC 61914:2021 © IEC 2021
6.5
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