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IEC 61386-23
Edition 2.0 2021-04
INTERNATIONAL
STANDARD
Conduit systems for cable management –
Part 23: Particular requirements – Flexible conduit systems
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IEC 61386-23
Edition 2.0 2021-04
INTERNATIONAL
STANDARD
Conduit systems for cable management –
Part 23: Particular requirements – Flexible conduit systems
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.10 ISBN 978-2-8322-9668-4
– 2 – IEC 61386-23:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 5
5 General conditions for tests . 5
6 Classification . 5
7 Marking and documentation . 5
8 Dimensions. 6
9 Construction . 6
10 Mechanical properties. 6
11 Electrical properties . 8
12 Thermal properties . 8
13 Fire hazard . 8
14 External influences . 8
15 Electromagnetic compatibility . 8
Annex A (normative) Classification coding for conduit systems . 12
Annex B (normative) Determination of material thickness . 12
Annex C (normative) Additional test requirements for conduit systems already
complying with IEC 61386-1:2008 . 12
Annex AA (informative) Calculation for minimum and maximum rate of increase of
force for 10.2.4 . 13
Figure AA.1 – Graph showing force against time for 750 N force. 13
Figure 101 – Flexing test apparatus . 9
Figure 102 – Gauge for checking the minimum inside diameter of the conduit system
after impact and resistance to heat tests . 10
Figure 103 – Assembly of conduit and terminating conduit fitting for bonding test . 11
Table AA.1 – Minimum and maximum rate of increase of force for 10.2.4 . 14
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONDUIT SYSTEMS FOR CABLE MANAGEMENT –
Part 23: Particular requirements – Flexible conduit systems
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
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61386-23 has been prepared by subcommittee 23A: Cable
management systems, of IEC technical committee 23: Electrical accessories:
This second edition cancels and replaces the first edition published in 2002. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Annex AA has been added to provide guidance on the application of a constantly
increasing force.
– 4 – IEC 61386-23:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
23A/952/FDIS 23A/957/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 61386 series, published under the general title Conduit
systems for cable management, can be found on the IEC website.
This document is to be used in conjunction with IEC 61386-1:2008 and
IEC 61386-1:2008/AMD1:2017.
This document supplements or modifies the corresponding clauses of IEC 61386-1:2008 and
IEC 61386-1:2008/AMD1:2017. Where a particular clause or subclause of IEC 61386-1:2008
and IEC 61386-1:2008/AMD1:2017 is not mentioned in this document, that clause or
subclause applies as far as is reasonable. Where this document states "addition",
"modification" or "replacement", the relevant text of IEC 61386-1:2008 and
IEC 61386-1:2008/AMD1:2017 is to be adapted accordingly.
Subclauses, tables and figures which are in addition to those in IEC 61386-1:2008 and
IEC 61386-1:2008/AMD1:2017 are numbered starting with 101. Annexes which are additional
to those in IEC 61386-1:2008 and IEC 61386-1:2008/AMD1:2017 are lettered AA, BB, etc.
In this document, the following print types are used:
– Requirements proper: in roman type.
– Test specifications: in italic type.
– Explanatory matter: 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 "http://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.
CONDUIT SYSTEMS FOR CABLE MANAGEMENT –
Part 23: Particular requirements – Flexible conduit systems
1 Scope
Clause 1 of IEC 61386-1:2008 is applicable, except as follows:
Addition:
This part of IEC 61386 specifies the requirements for flexible conduit systems.
2 Normative references
Clause 2 of IEC 61386-1:2008 and of IEC 61386-1:2008/AMD1:2017 are applicable, except as
follows:
Addition:
IEC 61386-1:2008, Conduit systems for cable management – Part 1: General requirements
IEC 61386-1:2008/AMD1:2017
3 Terms and definitions
Clause 3 of IEC 61386-1:2008 and of IEC 61386-1:2008/AMD1:2017 are applicable.
4 General requirements
Clause 4 of IEC 61386-1:2008 is applicable.
5 General conditions for tests
Clause 5 of IEC 61386-1:2008 and of IEC 61386-1:2008/AMD1:2017 are applicable.
6 Classification
Clause 6 of IEC 61386-1:2008 is applicable, except as follows:
Classifications 6.1.3, 1; 6.1.3, 2 and 6.1.3, 3 are not applicable.
NOTE Flexible conduit systems according to 6.1.1, 1; 6.1.1, 2; 6.1.2, 1; 6.1.2, 2 and classification 1 from 6.2.1,
Table 1 are not allowed in France.
7 Marking and documentation
Clause 7 of IEC 61386-1:2008 and of IEC 61386-1:2008/AMD1:2017 are applicable, except as
follows:
– 6 – IEC 61386-23:2021 © IEC 2021
Addition:
7.1.101 The conduit shall be marked in accordance with 7.1 along its entire length at regular
intervals of preferably 1 m but not longer than 3 m. Where this is technically impractical, the
mark shall be on a label attached to the product at each end, or on the packaging.
Compliance is checked by inspection.
7.1.102 The manufacturer shall document or include in the packaging, the minimum inside
diameter, the minimum bend radius and the classification in accordance with Clause 6 for the
conduit system.
Compliance is checked by inspection of the documentation.
8 Dimensions
Replacement:
8.1 Threads shall comply with IEC 60423.
Compliance is checked by means of the gauges specified in IEC 60423.
8.2 The minimum inside diameter of the conduit system shall be as declared by the
manufacturer.
Compliance is checked by measurement.
9 Construction
Clau
...