IEC 60502-1:2021
(Main)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)
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 60502-1:2021 specifies the construction, dimensions and test requirements of power cables with extruded solid insulation for rated AC voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV) for fixed installations such as distribution networks or industrial installations. Cables of rated AC voltage 1 kV (Um = 1,2 kV) designed and tested in accordance with this document can also be used, if declared by the manufacturer, in DC distribution systems having their nominal voltage ≤ 750 V DC (with a maximum of 900 V DC) between a live conductor and neutral/earth, or ≤ 1 500 V DC (with a maximum 1 800 V DC) between two live conductors. Applicable core identification for DC systems are considered in accordance with local installation regulations.
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IEC 60502-1 ®
Edition 3.0 2021-02
INTERNATIONAL
STANDARD
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)
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.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
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
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latest edition, a corrigendum or an amendment might have been published.
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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
Centre: sales@iec.ch.
IEC 60502-1 ®
Edition 3.0 2021-02
INTERNATIONAL
STANDARD
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)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.20 ISBN 978-2-8322-9315-7
– 2 – IEC 60502-1:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Voltage designations and materials . 9
5 Conductors . 12
6 Insulation . 12
7 Assembly of multicore cables, inner coverings and fillers . 14
8 Metal layers for single-core and multicore cables. 16
9 Metal screen . 16
10 Concentric conductor . 17
11 Metal sheath . 17
12 Metal armour . 17
13 Oversheath . 21
14 Test conditions . 22
15 Routine tests . 22
16 Sample tests . 24
17 Type tests, electrical. 27
18 Type tests, non-electrical . 29
19 Electrical tests after installation . 35
Annex A (normative) Fictitious calculation method for determination of dimensions of
protective coverings . 45
Annex B (normative) Rounding of numbers . 51
Annex C (normative) Determination of hardness of HEPR insulation . 52
Bibliography . 55
Figure C.1 – Test on surfaces of large radius of curvature . 53
Figure C.2 – Test on surfaces of small radius of curvature . 54
Table 1 – Recommended rated AC voltages U . 10
Table 2 – Insulating compounds . 11
Table 3 – Maximum conductor temperatures for different types of insulating compound . 11
Table 4 – Sheathing compounds and maximum conductor temperatures for different
types of sheathing compound . 12
Table 5 – Nominal thickness of PVC/A insulation . 13
Table 6 – Nominal thickness of cross-linked polyethylene (XLPE) insulation . 13
Table 7 – Nominal thickness of ethylene propylene rubber (EPR) and hard ethylene
propylene rubber (HEPR) insulation . 14
Table 8 – Thickness of extruded inner covering . 15
Table 9 – Nominal diameter of round armour wires . 20
Table 10 – Nominal thickness of armour tapes . 20
Table 11 – Routine test voltages . 23
Table 12 – Number of samples for sample tests . 24
Table 13 – Electrical type test requirements for insulating compounds . 36
Table 14 – Non-electrical type tests (see Tables 15 to 23) . 37
Table 15 – Test requirements for mechanical characteristics of insulating compounds
(before and after ageing) . 38
Table 16 – Test requirements for particular characteristics of PVC insulating
compounds . 39
Table 17 – Test requirements for particular characteristics of various cross-linked
insulating compounds . 40
Table 18 – Test requirements for mechanical characteristics of sheathing compounds
(before and after ageing) . 41
Table 19 – Test requirements for particular characteristics of PVC sheathing
compounds . 42
Table 20 – Test requirements for particular characteristics of thermoplastic PE
sheathing compounds . 43
Table 21 – Test requirements for particular characteristics of halogen free sheathing
compounds . 43
Table 22 – Test requirements for particular characteristics of elastomeric sheathing
compounds . 44
Table 23 – Test methods and requirements for halogen free compounds . 44
Table A.1 – Fictitious diameter of conductor . 46
Table A.2 – Assembly coefficient k for laid-up cores . 47
Table A.3 – Increase of diameter for concentric conductors and metal screens . 48
Table A.4 – Increase of diameter for additional bedding . 50
– 4 – IEC 60502-1:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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) –
m m
Part 1: Cables for rated voltages of 1 kV
(U = 1,2 kV) and 3 kV (U = 3,6 kV)
m m
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 60502-1 has been prepared by IEC technical committee 20: Electric cables. It is an
International Standard.
This third edition cancels and replaces the second edition published in 2004 and
...
IEC 60502-1 ®
Edition 3.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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)
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.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
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.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
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.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC 60502-1 ®
Edition 3.0 2021-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.20 ISBN 978-2-8322-9427-7
– 2 – IEC 60502-1:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 9
4 Voltage designations and materials . 10
5 Conductors . 13
6 Insulation . 13
7 Assembly of multicore cables, inner coverings and fillers . 15
8 Metallic layers for single-core and multicore cables . 17
9 Metallic screen . 17
10 Concentric conductor . 18
11 Metallic sheath . 18
12 Metallic armour . 19
13 Oversheath . 22
14 Test conditions . 23
15 Routine tests . 24
16 Sample tests . 25
17 Type tests, electrical. 28
18 Type tests, non-electrical . 30
19 Electrical tests after installation . 37
Annex A (normative) Fictitious calculation method for determination of dimensions of
protective coverings . 52
Annex B (normative) Rounding of numbers . 58
Annex C (normative) Determination of hardness of HEPR insulation . 59
Bibliography . 61
Figure C.1 – Test on surfaces of large radius of curvature . 60
Figure C.2 – Test on surfaces of small radius of curvature . 60
Table 1 – Recommended rated AC voltages U . 11
Table 2 – Insulating compounds . 11
Table 3 – Maximum conductor temperatures for different types of insulating compound . 12
Table 4 – Sheathing compounds and maximum conductor temperatures for different
types of sheathing compound . 13
Table 5 – Nominal thickness of PVC/A insulation . 14
Table 6 – Nominal thickness of cross-linked polyethylene (XLPE) insulation . 14
Table 7 – Nominal thickness of ethylene propylene rubber (EPR) and hard ethylene
propylene rubber (HEPR) insulation . 15
Table 8 – Thickness of extruded inner covering . 16
Table 9 – Nominal diameter of round armour wires . 21
Table 10 – Nominal thickness of armour tapes . 21
Table 11 – Routine test voltages . 25
Table 12 – Number of samples for sample tests . 26
Table 13 – Electrical type test requirements for insulating compounds . 38
Table 14 – Non-electrical type tests (see Tables 15 to 23) . 39
Table 15 – Test requirements for mechanical characteristics of insulating compounds
(before and after ageing) . 40
Table 16 – Test requirements for particular characteristics of PVC insulating
compounds . 41
Table 17 – Test requirements for particular characteristics of various cross-linked
insulating compounds . 43
Table 18 – Test requirements for mechanical characteristics of sheathing compounds
(before and after ageing) . 45
Table 19 – Test requirements for particular characteristics of PVC sheathing
compounds . 46
Table 20 – Test requirements for particular characteristics of thermoplastic PE
sheathing compounds . 48
Table 21 – Test requirements for particular characteristics of halogen free sheathing
compounds . 48
Table 22 – Test requirements for particular characteristics of elastomeric sheathing
compounds . 50
Table 23 – Test methods and requirements for halogen free compounds . 51
Table A.1 – Fictitious diameter of conductor . 53
Table A.2 – Assembly coefficient k for laid-up cores . 54
Table A.3 – Increase of diameter for concentric conductors and metal screens . 55
Table A.4 – Increase of diameter for additional bedding . 57
– 4 – IEC 60502-1:2021 RLV © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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) –
m m
Part 1: Cables for rated voltages of 1 kV
(U = 1,2 kV) and 3 kV (U = 3,6 kV)
m m
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.
This redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition I
...
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