IEC 61914:2009

Cable cleats for electrical installations

IEC 61914:2009 specifies requirements and tests for cable cleats and intermediate restraints used for securing cable in electrical installations. Cable cleats provide resistance to electromechanical forces where declared. This standard includes cable cleats that rely on a mounting surface specified by the manufacturer for axial and/or lateral retention of cables.

Brides de câbles pour installations électriques

La CEI 61914:2009 spécifie les exigences et essais pour brides de câbles et dispositifs intermédiaires de tenue utilisés pour la fixation de câble dans les installations électriques. Les brides de câble fournissent une résistance aux forces électromécaniques, lorsque cela est déclaré. Cette norme inclut les brides de câble qui reposent sur une surface de montage spécifiée par le fabricant pour le maintien axial et/ou latéral des câbles.

General Information

• Status: Published
• Publication Date: 27-Jan-2009
• ICS: 29.120.10 - Conduits for electrical purposes
• Technical Committee: SC 23A - Cable management systems
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 23-Nov-2015

Relations

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

Standards Content (Sample)

IEC 61914
®
Edition 1.0 2009-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Cable cleats for electrical installations

Brides de câbles pour installations électriques

IEC 61914:2009

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IEC 61914
®
Edition 1.0 2009-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Cable cleats for electrical installations

Brides de câbles pour installations électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 29.120.10 ISBN 978-2-88910-586-1
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – 61914 © IEC:2009
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Terms, definitions and abbreviations .6
4 General requirements .8
5 General notes on tests .8
6 Classification.9
6.1 According to material.9
6.1.1 Metallic.9
6.1.2 Non-metallic .9
6.1.3 Composite .9
6.2 According to maximum and minimum temperature.9
6.3 According to resistance to impact.10
6.3.1 Very light.10
6.3.2 Light .10
6.3.3 Medium .10
6.3.4 Heavy.10
6.3.5 Very heavy .10
6.4 According to type of retention or resistance to electromechanical forces or
both.10
6.4.1 With lateral retention .10
6.4.2 With axial retention.10
6.4.3 Resistant to electromechanical forces, withstanding one short circuit .10
6.4.4 Resistant to electromechanical forces, withstanding more than one
short circuit .10
6.5 According to environmental influences .10
6.5.1 Resistant to ultraviolet light for non-metallic and composite
components.10
6.5.2 Resistant to corrosion for metallic and composite components .10
7 Marking and documentation.10
7.1 Marking .10
7.2 Durability and legibility .10
7.3 Documentation .11
8 Construction .11
9 Mechanical properties .11
9.1 Requirements.11
9.2 Impact test .12
9.3 Lateral load test .13
9.4 Axial load test .13
9.5 Test for resistance to electromechanical force.14
9.5.1 General .14
9.5.2 For cable cleats and intermediate restraints classified in 6.4.3 .14
9.5.3 For cable cleats and intermediate restraints classified in 6.4.4 .14
10 Fire hazards .15
10.1 Flame propagation .15
10.2 Smoke emission .15

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61914 © IEC:2009 – 3 –
10.3 Smoke toxicity.15
11 Environmental influences.15
11.1 Resistance to ultraviolet light.15
11.2 Resistance to corrosion .16
11.2.1 General .16
11.2.2 Salt spray test .17
12 Electromagnetic compatibility .17
12.1 Electromagnetic emission.17
12.2 Inductive heating .17
Annex A (informative) Examples of cable cleats.23
Annex B (informative) Calculation of forces caused by short-circuit currents .24
B.1 Characteristics .24
B.2 Specification of the test current .25
B.3 Calculation of the mechanical forces between conductors .25
Bibliography.28

Figure 1 – Typical arrangement for impact test .18
Figure 2 – Typical arrangement for lateral load test .19
Figure 3 – Typical arrangement for axial load test.20
Figure 4 – Typical assemblies for test for resistance to electromechanical force .21
Figure 5 – Typical arrangement of three cables in close trefoil formation .21
Figure 6 – Typical arrangement of cables in flat formation .21
Figure 7 – Typical arrangement of the needle-flame test.22
Figure B.1 – Short-circuit current of a far-from-generator short circuit with constant a.c.
component.24
Figure B.2 – Short-circuit current of a near-to-generator short circuit with decaying a.c.
component.25
Figure B.3 – Two parallel conductors .26

Table 1 – Maximum temperature for permanent application .9
Table 2 – Minimum temperature for permanent application .9
Table 3 – Impact test values .12
Table 4 – Resistance to corrosion.17

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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
nongovernmental 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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.
International Standard IEC 61914 has been prepared by subcommittee 23A: Cable
management systems, of IEC technical committee 23: Electrical accessories.
The text of this standard is based on the following documents:
FDIS RVD
23A/588/FDIS 23A/592/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
NOTE The following print types are used:
− requirements: in roman type
− test specifications: in italic type
− notes: in small roman type

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61914 © IEC:2009 – 5 –
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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CABLE CLEATS FOR ELECTRICAL INSTALLATIONS



1 Scope
This International Standard specifies requirements and tests for cable cleats and intermediate
restraints used for securing cable in electrical installations. Cable cleats provide resistance to
electromechanical forces where declared. This standard includes cable cleats that rely on a
mounting surface specified by the manufacturer for axial and/or lateral retention of cables.
This standard does not apply to:
− cable glands;
− cable ties.
2 Normative references
The following referenced documents are indispensable for the application 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 60060-1:1989, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 60695-11-5:2004, Fire hazard testing – Part 11-5: Test flames – Needle-flame test
method – Apparatus, confirmatory test arrangement and guidance
ISO 868:2003, Plastics and ebonite – Determination of indentation hardness by means of a
durometer (Shore hardness)
ISO 4287:1997, Geometrical product specifications (GPS) – Surface texture: Profile method –
Terms, definitions and surface texture parameters
ISO 4892-2:2006, Plastics – Methods of exposure to laboratory light sources – Part 2: Xenon-
arc lamps
ISO 9227:2006, Corrosion tests in artificial atmospheres – Salt spray tests
3 Terms, definitions and abbreviations
For the purposes of this document, the following terms, definitions and abbreviations apply.
3.1
cable cleat
device designed to provide securing of cables when installed at intervals along the length of
cables
NOTE A cable cleat is provided with a means of attachment to a mounting surface but does not rely on an
unspecified mounting surface for the retention of the cables. Examples of mounting surfaces that may be specified
are ladder, tray, strut or rail, wire and beam (see Figures A.8 and A.9). Where declared, cable cleats provide
resistance to electromechanical forces

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61914 © IEC:2009 – 7 –
3.2
intermediate restraint
cable retaining device designed to be used with cable cleats to hold the cables together in
order to provide resistance to electromechanical forces. Intermediate restraints are not
attached to the mounting surface
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
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
the formation of three cables so laid as to be mutually equidistant. Viewed in cross-section,
the lines joining the cable centres form an equilateral triangle (see Figure 5)
NOTE The formation is known as “close trefoil” formation when the cables are touching each other.
3.12
flat formation
the formation of a number of cables laid in a plane, usually with equal spacing between
adjacent cables (see Figure 6)

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3.13
electromechanical forces
induced forces acting on current-carrying conductors
3.14
retention
limiting the lateral and/or axial movement of the cable
3.15
securing
fixing to or from a mounting surface or another product
3.16
environmental influences
effect of corrosive substances or solar radiation, etc.
4 General requirements
Products covered by this standard shall be so designed and constructed that, when
assembled and installed as for normal use according to the manufacturer’s instructions, they
ensure securing 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 standard.
5 General notes on tests
5.1 Tests according to this standard are type tests. All sizes shall comply with Clause 8 a nd
9. 1 a). Where there are a number of cleats in a range, the range is divided into one or more
classes. In this case, the smallest, the largest and any critical size of cleat in each class are
tested, except for the test in 9.5. The test in 9.5 is performed on the most critical size in each
class.
NOTE For guidance in determining classes, cable cleats or intermediate restraints having material, construction
characteristics, and classifications according to Clause 6 below, in common, are considered of the same class.
5.2 Unless otherwise specified, all tests shall be carried out on three new samples of each
size selected as in 5.1 assembled and installed as for normal use according to the
manufacturer’s or responsible vendor's instructions.
5.3 Tests on non-metallic and composite cleats and intermediate restraints 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
5.5 Compliance with this standard is satisfied if all the 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.
NOTE 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.

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61914 © IEC:2009 – 9 –
5.6 When toxic or hazardous processes are used, due regard shall be taken of the safety of
persons within the test area.
6 Classification
6.1 According to material
6.1.1 Metallic
6.1.2 Non-metallic
6.1.3 Composite
6.2 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

NOTE For temperature values above 120 °C and below −60 °C, the manufacturer or responsible vendor may
declare temperatures outside the values tabulated above.

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6.3 According to resistance to impact
6.3.1 Very light
6.3.2 Light
6.3.3 Medium
6.3.4 Heavy
6.3.5 Very heavy
6.4 According to type of retention or resistance to electromechanical forces or both
6.4.1 With lateral retention
6.4.2 With axial retention
6.4.3 Resistant to electromechanical forces, withstanding one short circuit
6.4.4 Resistant to electromechanical forces, withstanding more than one short
circuit
Manufacturers of cleats shall declare a classification under 6.4.1 and may also declare a
classification under 6.4.2. Manufacturers of cleats may also declare a classification under
6. 4. 3 o r 6. 4. 4.
Manufacturers of intermediate restraints shall declare a classification under 6. 4. 3 or 6. 4. 4.
6.5 According to environmental influences
6.5.1 Resistant to ultraviolet light for non-metallic and composite components
6.5.1.1 Not declared
6.5.1.2 Resistant to ultraviolet light
6.5.2 Resistant to corrosion for metallic and composite components
6.5.2.1 Low
6.5.2.2 High
7 Marking and documentation
7.1 Marking
Each cleat and intermediate restraint shall be marked with
− the manufacturer’s or responsible vendor’s name or logo or trademark;
− the product identification or type.
Where it is not possible to apply the marking directly onto the product, then the marking shall
be placed on the smallest supplied package.
7.2 Durability and legibility
Marking on the product shall be durable and easily legible to normal or corrected vision.

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61914 © IEC:2009 – 11 –
Compliance is checked by inspection and by rubbing the marking by hand for 15 s with a
piece of cloth soaked with water and again for 15 s with a piece of cloth soaked with
petroleum spirit.
After the test, the marking shall remain legible to normal or corrected vision.
Marking made by moulding, pressing or engraving is not subjected to the rubbing test.
NOTE Marking may be applied, for example, by moulding, pressing, engraving, printing, adhesive labels, etc.
7.3 Documentation
The manufacturer or responsible vendor shall provide in their literature:
− the classifications according to Clause 6;
− the maximum and minimum cable or bundle diameters;
− the lateral load for cleats declared under 6. 4. 1;
− the axial load for cleats declared under 6. 4. 2;
− the method of assembly and installation including tightening torques, where appropriate.
Additionally, for cleats and/or intermediate restraints declared under 6. 4. 3 or 6. 4. 4:
− the peak short-circuit current;
− the initial r.m.s. symmetrical short-circuit current;
− the cable outside diameter used in the test in 9.5 ;
− the maximum spacing, D, as shown in Figure 4.
Compliance is checked by inspection.
NOTE Some or all of this information may also be required to be provided on packaging or instruction sheets
supplied with the product.
8 Construction
The surfaces of cleats and intermediate restraints shall be free from sharp edges, burrs, flash,
etc. that are likely to damage cables or inflict injury to the installer or user.
Compliance is checked by visual and manual inspection of the surface.
9 Mechanical properties
9.1 Requirements
Cleats and intermediate restraints shall be:
a) capable of accommodating the size or range of cable or cable bundle diameter declared
by the manufacturer or responsible vendor without c
...