IEC 60227-1:2024

IEC 60227-1 ®
Edition 4.0 2024-02
INTERNATIONAL
STANDARD
Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V –
Part 1: General requirements
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IEC 60227-1 ®
Edition 4.0 2024-02
INTERNATIONAL
STANDARD
Polyvinyl chloride insulated cables of rated voltages up to and including

450/750 V –
Part 1: General requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.20  ISBN 978-2-8322-8245-8

– 2 – IEC 60227-1:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Marking . 9
4.1 Indication of origin and cable identification . 9
4.1.1 General . 9
4.1.2 Continuity of marks . 9
4.2 Durability . 10
4.3 Legibility . 10
5 Core identification . 10
5.1 General . 10
5.2 Core identification by colours . 10
5.2.1 General requirements . 10
5.2.2 Colour scheme . 10
5.2.3 Colour combination green-and-yellow . 10
5.3 Core identification by numbers . 11
5.3.1 General requirements . 11
5.3.2 Preferred arrangement of marking . 11
5.3.3 Durability . 11
6 General requirements for the construction of cables . 11
6.1 Conductors . 11
6.1.1 Material . 11
6.1.2 Construction . 12
6.1.3 Check on construction . 12
6.1.4 Electrical resistance . 12
6.2 Insulation . 12
6.2.1 Material . 12
6.2.2 Application to the conductor . 12
6.2.3 Thickness . 12
6.2.4 Mechanical properties before and after ageing . 13
6.3 Filler . 15
6.3.1 Material . 15
6.3.2 Application . 15
6.4 Extruded inner covering . 15
6.4.1 Material . 15
6.4.2 Application . 16
6.4.3 Thickness . 16
6.5 Sheath . 16
6.5.1 Material . 16
6.5.2 Application . 16
6.5.3 Thickness . 16
6.5.4 Mechanical properties before and after ageing . 16
6.6 Tests on completed cables . 19
6.6.1 Electrical properties . 19

6.6.2 Overall dimensions . 20
6.6.3 Mechanical strength of flexible cables . 20
6.6.4 Flame retardance . 21
7 Guidance on the use of cables. 21
Annex A (normative) Code designations . 22
Bibliography . 23

Figure 1 – Arrangement of marking by numbers . 11

Table 1 – Requirements for the non-electrical tests for polyvinyl chloride (PVC)
insulation . 13
Table 2 – Requirements for the non-electrical test for polyvinyl chloride (PVC) sheaths . 17
Table 3 – Requirements for electrical tests for PVC insulated cables . 19

– 4 – IEC 60227-1:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POLYVINYL CHLORIDE INSULATED CABLES OF
RATED VOLTAGES UP TO AND INCLUDING 450/750 V –

Part 1: General requirements
FOREWORD
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IEC 60227-1 has been prepared by IEC technical committee 20: Electric cables. It is an
International Standard.
This fourth edition cancels and replaces the third edition published in 2007. 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.

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