EN IEC 60228:2024

SLOVENSKI STANDARD
01-oktober-2024
Vodniki izoliranih kablov (IEC 60228:2023)
Conductors of insulated cables (IEC 60228:2023)
Leiter für Kabel und isolierte Leitungen (IEC 60228:2023)
Ames des câbles isolés (IEC 60228:2023)
Ta slovenski standard je istoveten z: EN IEC 60228:2024
ICS:
29.060.20 Kabli Cables
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60228

NORME EUROPÉENNE
EUROPÄISCHE NORM August 2024
ICS 29.060.20 Supersedes EN 60228:2005/corrigendum May 2005; EN
60228:2005
English Version
Conductors of insulated cables
(IEC 60228:2023)
Ames des câbles isolés Leiter für Kabel und isolierte Leitungen
(IEC 60228:2023) (IEC 60228:2023)
This European Standard was approved by CENELEC on 2024-06-12. 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,
Türkiye 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
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60228:2024 E
European foreword
The text of document 20/2125/FDIS, future edition 4 of IEC 60228, prepared by IEC/TC 20 "Electric
cables" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2025-03-12
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-06-12
document have to be withdrawn
This document supersedes EN 60228:2005 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.
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 60228:2023 was approved by CENELEC as a European
Standard without any modification.
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.cencenelec.eu.
Publication Year Title EN/HD Year
IECEE OD-5014 - IEC Systemof Conformity Assessment Schemes - -
for Electrotechnical Equipment and Components
(IECEE System), Committee of Testing
Laboratories (CTL), Instrument Accuracy Limits
Annex ZB
(normative)
Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over a
long period, e. g. climatic conditions, electrical earthing conditions.
NOTE If it affects harmonization, it forms part of the European Standard or Harmonization Document.
For the countries in which the relevant special national conditions apply these provisions are
normative, for other countries they are informative.
Clause Special national condition
Table 3 Cyprus, Ireland, United Kingdom
Add:
1,25 0,21 15,6 16,1
NOTE This conductor is for cables which are intended for use on appliances fitted with 13 A
plugs conforming to BS 1363-1 or I.S. 401
Table C.1 Cyprus, Ireland, United Kingdom
Add:
1,25 – – 1,7
IEC 60228 ®
Edition 4.0 2023-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Conductors of insulated cables

Ames des câbles isolés
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.20  ISBN 978-2-8322-7808-6

– 2 – IEC 60228:2023  IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Classification . 8
5 Materials . 8
5.1 General . 8
5.2 Circular and shaped solid aluminium conductors . 8
5.3 Circular and shaped stranded aluminium conductors . 9
6 Solid conductors and stranded conductors . 9
6.1 Solid conductors (class 1) . 9
6.1.1 Construction . 9
6.1.2 Resistance . 9
6.2 Stranded circular non-compacted conductors (class 2) . 9
6.2.1 Construction . 9
6.2.2 Resistance . 10
6.3 Stranded compacted circular conductors and stranded shaped conductors
(class 2) . 10
6.3.1 Construction . 10
6.3.2 Resistance . 10
6.4 Milliken conductors (class 2) . 10
6.4.1 Construction . 10
6.4.2 Resistance . 10
7 Flexible conductors (classes 5 and 6) . 10
7.1 Construction . 10
7.2 Resistance . 11
8 Check of compliance with Clause 6 and Clause 7 . 11
Annex A (normative) Measurement of resistance . 16
Annex B (informative) Exact formulae for the temperature correction factors . 18
Annex C (informative) Guidance on the dimensional limits of circular conductors . 19
C.1 Purpose . 19
C.2 Dimensional limits for circular copper conductors . 19
C.3 Dimensional limits for stranded compacted circular copper, aluminium and
aluminium alloy conductors . 19
C.4 Dimensional limits for circular solid aluminium conductors . 19
Bibliography . 23

Table 1 – Tensile strength limits for circular and shaped solid aluminium conductors . 8
Table 2 – Tensile strength limits for circular and shaped stranded aluminium
conductors . 9
Table 3 – Class 1 solid conductors for single-core and multi-core cables . 12
Table 4 – Class 2 stranded conductors for single-core and multi-core cables . 13
Table 5 – Class 5 flexible copper conductors for single-core and multi-core cables . 14
Table 6 – Class 6 flexible copper conductors for single-core and multi-core cables . 15

IEC 60228:2023  IEC 2023 – 3 –
Table A.1 – Temperature correction factors k for conductor resistance to correct the
t
measured resistance at t °C to 20 °C . 17
Table C.1 – Maximum diameters of solid, non-compacted stranded and flexible circular
copper conductors . 20
Table C.2 – Minimum and maximum diameters of stranded compacted circular copper,
aluminium and aluminium alloy conductors . 21
Table C.3 – Minimum and maximum diameters of solid circular aluminium conductors . 22

– 4 – IEC 60228:2023  IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONDUCTORS OF INSULATED CABLES

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
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ass
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