IEC 60227-7:2024

Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 7: Flexible cables screened and unscreened with two or more conductors and of rated voltages up to and including 300/500 V

IEC 60227-7:2024 is available as IEC 60227-7:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60227-7:2024 details the particular specifications for polyvinyl chloride insulated, screened and unscreened control cables of rated voltages up to and including 300/500 V. This document provides the particular requirements for screened and unscreened control cables of rated voltages up to and including 300/500 V, which apply in addition to the appropriate requirements specified in IEC 60227-1, which apply to all cables. The tests for cables specified in the IEC 60227 series are described in IEC 63294.

Conducteurs et câbles isolés au polychlorure de vinyle, de tension nominale au plus égale à 450/750 V - Partie 7: Câbles souples avec et sans écran, à deux âmes ou plus

IEC 60227-7:2024 est disponible sous forme de IEC 60227-7:2024 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

General Information

• Status: Published
• Publication Date: 21-Feb-2024
• ICS: 29.060.20 - Cables
• Technical Committee: TC 20 - Electric cables
• Drafting Committee: WG 17 - TC 20/WG 17
• Current Stage: PPUB - Publication issued
• Start Date: 15-Mar-2024
• Completion Date: 22-Feb-2024

Relations

• Revises: IEC 60227-7:1995/AMD2:2011 - Amendment 2 - Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 7: Flexible cables screened and unscreened with two or more conductors
• Effective Date: 05-Sep-2023
• Revises: IEC 60227-7:1995/AMD1:2003 - Amendment 1 - Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 7: Flexible cables screened and unscreened with two or more conductors
• Effective Date: 05-Sep-2023
• Revises: IEC 60227-7:1995 - Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 7: Flexible cables screened and unscreened with two or more conductors
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60227-7 ®
Edition 2.0 2024-02
INTERNATIONAL
STANDARD
Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V –
Part 7: Flexible cables screened and unscreened with two or more conductors
and of rated voltages up to and including 300/500 V

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 Secretariat 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.

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.

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further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 60227-7 ®
Edition 2.0 2024-02
INTERNATIONAL
STANDARD
Polyvinyl chloride insulated cables of rated voltages up to and including

450/750 V –
Part 7: Flexible cables screened and unscreened with two or more conductors

and of rated voltages up to and including 300/500 V

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.20  ISBN 978-2-8322-8270-0

– 2 – IEC 60227-7:2024 © IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Oil resistant, polyvinyl chloride sheathed, screened and unscreened flexible cable . 8
4.1 Code designation . 8
4.2 Rated voltage . 8
4.3 Construction . 8
4.3.1 Conductors . 8
4.3.2 Insulation . 8
4.3.3 Assembly of cores and fillers, if any . 8
4.3.4 Inner sheath for screened cables . 8
4.3.5 Screen . 9
4.3.6 Sheath or oversheath . 9
4.3.7 Core identification . 10
4.3.8 Overall diameter . 10
4.4 Tests . 10
4.4.1 General . 10
4.4.2 Flexing test . 10
4.5 Guidance on use . 11
Bibliography . 15

Table 1 – Mass of weight and diameter of pulleys . 10
Table 2 – General data for type 60227 IEC 74 . 12
Table 3 – General data for type 60227 IEC 75 . 13
Table 4 – Tests for types 60227 IEC 74 and 60227 IEC 75 . 14

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POLYVINYL CHLORIDE INSULATED CABLES
OF RATED VOLTAGES UP TO AND INCLUDING 450/750 V –

Part 7: Flexible cables screened and unscreened with two or more
conductors and of rated voltages up to and including 300/500 V

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60227-7 has been prepared by IEC technical committee 20: Electric cables. It is an
International Standard.
This second edition cancels and replaces the first edition published in 1995, Amendment 1:2003
and Amendment 2:2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the reference to tests according to IEC 60227-2 has been withdrawn and replaced with a
reference to IEC 63294;
b) normative references have been updated.

– 4 – IEC 60227-7:2024 © IEC 2024
The text of this International Standard is based on the following documents:
Draft Report on voting
20/2144/FDIS 20/2157/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/publications.
A list of all parts in the IEC 60227 series, published under the general title Polyvinyl chloride
insulated cables of rated voltages up to and including 450/750 V can be found on the IEC
website.
This document is to be used in conjunction with IEC 60227-1.
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, or
• revised.
INTRODUCTION
The IEC 60227 series, published under the general title Polyvinyl chloride insulated cables of
rated voltages up to and including 450/750 V, consists of the following parts:
IEC 60227-1: General requirements;
IEC 60227-2: Test methods (withdrawn and replaced by IEC 63294);
IEC 60227-3: Non-sheathed cables for fixed wiring;
IEC 60227-4: Sheathed cables for fixed wiring;
IEC 60227-5: Flexible cables (cords);
IEC 60227-6: Lift cables and cables for flexible connections;
IEC 60227-7: Flexible cables screened and unscreened with two or more conductors and of
rated voltages up to and including 300/500 V.
This part of IEC 60227, when used in conjunction with IEC 60227-1, forms the complete
standard for flexible cables screened and unscreened with two or more conductors and of rated
voltages up to and including 300/500 V only.

– 6 – IEC 60227-7:2024 © IEC 2024
POLYVINYL CHLORIDE INSULATED CABLES
OF RATED VOLTAGES UP TO AND INCLUDING 450/750 V –

Part 7: Flexible cables screened and unscreened with two or more
conductors and of rated voltages up to and including 300/500 V

1 Scope
This part of IEC 60227 details the particular specifications for polyvinyl chloride insulated,
screened and unscreened control cables of rated voltages up to and including 300/500 V.
This document provides the particular requirements for screened and unscreened control
cables of rated voltages up to and including 300/500 V, which apply in addition to the
appropriate requirements specified in IEC 60227-1, which apply to all cables. The tests for
cables specified in the IEC 60227 series are described in IEC 63294.
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 60227-1, Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V – Part 1: General requirements
IEC 60228, Conductors of
...

IEC 60227-7 ®
Edition 2.0 2024-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V –
Part 7: Flexible cables screened and unscreened with two or more conductors
and of rated voltages up to and including 300/500 V
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 Secretariat 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.
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 Products & Services Portal - products.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, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.
IEC Just Published - webstore.iec.ch/justpublished
Electropedia - www.electropedia.org
Stay up to date on all new IEC publications. Just Published
The world's leading online dictionary on electrotechnology,
details all new publications released. Available online and once
containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.
Also known as the International Electrotechnical Vocabulary
IEC Customer Service Centre - webstore.iec.ch/csc
(IEV) online.
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 60227-7 ®
Edition 2.0 2024-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V –
Part 7: Flexible cables screened and unscreened with two or more conductors
and of rated voltages up to and including 300/500 V
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.20  ISBN 978-2-8322-8371-4
– 2 – IEC 60227-7:2024 RLV © IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 2
1 General .
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Oil resistant, polyvinyl chloride sheathed, screened and unscreened flexible cable . 8
4.1 Code designation . 8
4.2 Rated voltage . 8
4.3 Construction . 8
4.3.1 Conductors . 8
4.3.2 Insulation . 9
4.3.3 Assembly of cores and fillers, if any . 9
4.3.4 Inner sheath for screened cables . 9
4.3.5 Screen . 9
4.3.6 Sheath or oversheath . 10
4.3.7 Core identification . 10
4.3.8 Overall diameter . 10
4.4 Tests . 11
4.4.1 General . 11
4.4.2 Flexing test . 11
4.5 Guidance on use . 11
Annex A (normative) Code designation .
Bibliography . 17

Table 1 – Mass of weight and diameter of pulleys . 11
Table 2 – General data for type 60227 IEC 74 . 13
Table 3 – General data for type 60227 IEC 75 . 14
Table 4 – Tests for types 60227 IEC 74 and 60227 IEC 75 . 15

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POLYVINYL CHLORIDE INSULATED CABLES
OF RATED VOLTAGES UP TO AND INCLUDING 450/750 V –

Part 7: Flexible cables screened and unscreened with two or more
conductors and of rated voltages up to and including 300/500 V

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 60227-7:1995+AMD1:2003+AMD2:2011 CSV. A vertical
bar appears in the margin wherever a change has been made. Additions are in green text,
deletions are in strikethrough red text.

– 4 – IEC 60227-7:2024 RLV © IEC 2024
IEC 60227-7 has been prepared by IEC technical committee 20: Electric cables. It is an
International Standard.
This second edition cancels and replaces the first edition published in 1995, Amendment 1:2003
and Amendment 2:2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the reference to tests according to IEC 60227-2 has been withdrawn and replaced with a
reference to IEC 63294;
b) normative references have been updated.
The text of this International Standard is based on the following documents:
Draft Report on voting
20/2144/FDIS 20/2157/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/publications.
A list of all parts in the IEC 60227 series, published under the general title Polyvinyl chloride
insulated cables of rated voltages up to and including 450/750 V can be found on the IEC
website.
This document is to be used in conjunction with IEC 60227-1.
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, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

INTRODUCTION
The IEC 60227 series, published under the general title Polyvinyl chloride insulated cables of
rated voltages up to and including 450/750 V, consists of the following parts:
IEC 60227-1: General requirements;
IEC 60227-2: Test methods (withdrawn and replaced by IEC 63294);
IEC 60227-3: Non-sheathed cables for fixed wiring;
IEC 60227-4: Sheathed cables for fixed wiring;
IEC 60227-5: Flexible cables (cords);
IEC 60227-6: Lift cables and cables for flexible connections;
IEC 60227-7: Flexible cables screened and unscreened with two or more conductors and of
rated voltages up to and including 300/500 V.
This part of IEC 60227, when used in conjunction with IEC 60227-1, forms the complete
standard for flexible cables screened and unscreened with two or more conductors and of rated
voltages up to and including 300/500 V only.

– 6 – IEC 60227-7:2024 RLV © IEC 2024
POLYVINYL CHLORIDE INSULATED CABLES
OF RATED VOLTAGES UP TO AND INCLUDING 450/750 V –

Part 7: Flexible cables screened and unscreened with two or more
conductors and of rated voltages up to and including 300/500 V

1 General
1 Scope
This part of IEC 60227 details the particular specifications for polyvinyl chloride insulated,
screened and unscreened control cables of rated voltages up to and including 300/500 V.
All cables comply with the appropriate requirements given in IEC 60227-1 and each in
...