IEC 60317-12:2020

Specifications for particular types of winding wires - Part 12: Polyvinyl acetal enamelled round copper wire, class 120

IEC 60317-12:2020 is available as IEC 60317-12:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60317-12:2020 specifies the requirements of enamelled round copper winding wires of class 120 with a sole coating based on polyvinyl acetal or polyvinyl formal resin, which can be modified provided it retains the chemical identity of the original resin and meets all specified wire requirements.
NOTE 1 A modified resin is a resin that has undergone a chemical change, or contains one or more additives to enhance certain performance or application characteristics.
NOTE 2 Polyvinyl acetal is a general name for a family of thermoplastic vinyl resins produced by the condensation of polyvinyl alcohol with an aldehyde. Examples are polyvinyl acetal, polyvinyl formal and polyvinyl butyral. The range of nominal conductor diameters covered by this document is:
- Grade 1: 0,040 mm up to and including 2,500 mm;
- Grade 2: 0,040 mm up to and including 5,000 mm;
- Grade 3: 0,080 mm up to and including 5,000 mm.
The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013. This fourth edition of IEC 60317-12 cancels and replaces the third edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- modification of the Scope;
- addition of reference to transformer oil resistance test method in Clause 20.

Spécifications pour types particuliers de fils de bobinage - Partie 12: Fil de section circulaire en cuivre émaillé avec acétal de polyvinyle, classe 120

IEC 60317-12:2020 est disponible sous forme de IEC 60317-12:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 60317-12:2020 spécifie les exigences relatives aux fils de bobinage de section circulaire en cuivre émaillés de classe 120 avec un revêtement simple à base de résine acétal de polyvinyle ou formal de polyvinyle qui peut être modifiée sous réserve qu'elle conserve l'identité chimique de la résine initiale et respecte l’ensemble des exigences spécifiées du fil.
NOTE 1 Une résine modifiée est une résine dont les propriétés chimiques ont été modifiées ou qui contient un ou plusieurs additifs visant à améliorer certaines performances ou caractéristiques d'application.
NOTE 2 L'acétal de polyvinyle est le nom générique désignant une famille de résines thermoplastiques vinyliques produites par la condensation de l'alcool polyvinylique avec un aldéhyde. Des exemples sont l'acétal de polyvinyle, le formal de polyvinyle et le butyral de polyvinyle. La gamme des diamètres nominaux des conducteurs couverts par le présent document est:
- grade 1: 0,040 mm jusques et y compris 2,500 mm;
- grade 2: 0,040 mm jusques et y compris 5,000 mm;
- grade 3: 0,080 mm jusques et y compris 5,000 mm.
Les diamètres nominaux du conducteur sont spécifiés à l'Article 4 de l'IEC 60317-0-1:2013. Cette quatrième édition de l'IEC 60317-12 annule et remplace la troisième édition parue en 2010. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- modification du domaine d’application;
- ajout d’une référence à la méthode d’essai de résistance à l’huile de transformateur à l’Article 20.

General Information

• Status: Published
• Publication Date: 26-May-2024
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.060.10 - Wires
• Technical Committee: TC 55 - Winding wires
• Drafting Committee: WG 1 - TC 55/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 19-Jun-2020
• Completion Date: 05-Jun-2020

Relations

• Amended By: IEC 60317-12:2020/AMD1:2024 - Amendment 1 - Specifications for particular types of winding wires - Part 12: Polyvinyl acetal enamelled round copper wire, class 120
• Effective Date: 05-Sep-2023
• Revises: IEC 60317-12:2010 - Specifications for particular types of winding wires - Part 12: Polyvinyl acetal enamelled round copper wire, class 120
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60317-12 ®
Edition 4.0 2020-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Specifications for particular types of winding wires –
Part 12: Polyvinyl acetal enamelled round copper wire, class 120

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC 60317-12 ®
Edition 4.0 2020-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Specifications for particular types of winding wires –

Part 12: Polyvinyl acetal enamelled round copper wire, class 120

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.10 ISBN 978-2-8322-8486-5

– 2 – IEC 60317-12:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and, general notes on methods of test and appearance . 6
3.1 Terms and definitions . 6
3.2 General notes on methods of test . 7
3.2.1 Methods of test . 7
3.2.2 Winding wire . 7
3.3 Appearance . 7
4 Dimensions. 7
5 Electrical resistance . 7
6 Elongation . 7
7 Springiness . 7
8 Flexibility and adherence . 7
9 Heat shock . 7
9.1 Nominal conductor diameters up to and including 1,600 mm . 8
9.2 Nominal conductor diameters over 1,600 mm . 8
10 Cut-through . 8
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to and
including 2,500 mm) . 8
12 Resistance to solvents . 9
13 Breakdown voltage . 9
14 Continuity of insulation . 9
15 Temperature index . 9
16 Resistance to refrigerants . 9
17 Solderability . 9
18 Heat or solvent bonding . 10
19 Dielectric dissipation factor . 10
20 Resistance to transformer oil . 10
21 Loss of mass . 10
23 Pin hole test . 10
30 Packaging . 10
Bibliography . 11

Table 1 – Heat shock . 8
Table 2 – Resistance to abrasion . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 12: Polyvinyl acetal enamelled round copper wire, class 120

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. 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 60317-12:2020 RLV © IEC 2020
International Standard IEC 60317-12 has been prepared by IEC technical committee 55:
Winding wires.
This fourth edition of IEC 60317-12 cancels and replaces the third edition published in 2010.
This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) modification of the Scope;
b) addition of reference to transformer oil resistance test method in Clause 20.
The text of this publication is based on the following documents:
FDIS Report on voting
55/1841/FDIS 55/1854/RVD
Full information on the voting for the approval of this document 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.
This International Standard is to be used in conjunction with IEC 60317-0-1:2013 and its
Amendment 1:2019.
A list of all parts in the IEC 60317 series, published under the general title Specifications for
particular types of winding wires, can be found on the IEC website.
The numbering of clauses in this document is not continuous from Clauses 21 through 30 in
order to reserve space for possible future wire requirements prior to those for wire packaging.
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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication 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
This Part of IEC 60317 forms an element of a series of standards which deals with insulated
wires used for windings in electrical equipment. It is composed of the following series:
1) Winding wires – Test methods (IEC 60851 series);
2) Specifications for particular types of winding wires (IEC 60317 series);
3) Packaging of winding wires (IEC 60264 series).

– 6 – IEC 60317-12:2020 RLV © IEC 2020
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 12: Polyvinyl acetal enamelled round copper wire, class 120

1 Scope
This part of IEC 60317 specifies the requirements of enamelled round copper winding wires of
class 120 with a sole coating based on polyvinyl acetal or polyvinyl formal resin, which may
can be modified provided it retains the chemical identity of the original resin and meets all
specified wire requirements.
NOTE 1 A modified resin is a resin that has undergone a chemical change, or contains one or more additives to
enhance certain performance or applicati
...

IEC 60317-12 ®
Edition 4.1 2024-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Specifications for particular types of winding wires –
Part 12: Polyvinyl acetal enamelled round copper wire, class 120
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
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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.

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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.

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IEC 60317-12 ®
Edition 4.1 2024-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Specifications for particular types of winding wires –
Part 12: Polyvinyl acetal enamelled round copper wire, class 120
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.10 ISBN 978-2-8322-9004-0
REDLINE VERSION – 2 – IEC 60317-12:2020+AMD1:2024 CSV
© IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, general notes and appearance . 6
3.1 Terms and definitions . 6
3.2 General notes . 6
3.2.1 Methods of test . 6
3.2.2 Winding wire . 7
3.3 Appearance . 7
4 Dimensions. 7
5 Electrical resistance . 7
6 Elongation . 7
7 Springiness . 7
8 Flexibility and adherence . 7
9 Heat shock . 7
9.1 Nominal conductor diameters up to and including 1,600 mm . 7
9.2 Nominal conductor diameters over 1,600 mm . 8
10 Cut-through . 8
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to and
including 2,500 mm) . 8
12 Resistance to solvents . 9
13 Breakdown voltage . 9
14 Continuity of insulation . 9
15 Temperature index . 9
16 Resistance to refrigerants . 9
17 Solderability . 9
18 Heat or solvent bonding . 10
19 Dielectric dissipation factor . 10
20 Resistance to transformer oil . 10
21 Loss of mass . 10
23 Pin hole test . 10
30 Packaging . 10
Bibliography . 11

Table 1 – Heat shock . 8
Table 2 – Resistance to abrasion . 9

© IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 12: Polyvinyl acetal enamelled round copper wire, class 120

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 consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 60317-12 edition 4.1 contains the fourth edition (2020-06) [documents 55/1841/FDIS
and 55/1854/RVD] and its amendment 1 (2024-05) [documents 55/1982/CDV and
55/2018/RVC].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
REDLINE VERSION – 4 – IEC 60317-12:2020+AMD1:2024 CSV
© IEC 2024
International Standard IEC 60317-12 has been prepared by IEC technical committee 55:
Winding wires.
This fourth edition of IEC 60317-12 cancels and replaces the third edition published in 2010.
This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) modification of the Scope;
b) addition of reference to transformer oil resistance test method in Clause 20.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This International Standard is to be used in conjunction with IEC 60317-0-1:2013 and its
Amendment 1:2019.
A list of all parts in the IEC 60317 series, published under the general title Specifications for
particular types of winding wires, can be found on the IEC website.
The numbering of clauses in this document is not continuous from Clauses 21 through 30 in
order to reserve space for possible future wire requirements prior to those for wire packaging.
The committee has decided that the contents of this document and its amendment 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 publication 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.
© IEC 2024
INTRODUCTION
This Part of IEC 60317 forms an element of a series of standards which deals with insulated
wires used for windings in electrical equipment. It is composed of the following series:
1) Winding wires – Test methods (IEC 60851 series);
2) Specifications for particular types of winding wires (IEC 60317 series);
3) Packaging of winding wires (IEC 60264 series).

REDLINE VERSION – 6 – IEC 60317-12:2020+AMD1:2024 CSV
© IEC 2024
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 12: Polyvinyl acetal enamelled round copper wir
...

IEC 60317-12 ®
Edition 4.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –
Part 12: Polyvinyl acetal enamelled round copper wire, class 120

Spécifications pour types particuliers de fils de bobinage –
Partie 12: Fil de section circulaire en cuivre émaillé avec acétal de polyvinyle,
classe 120
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
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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 Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
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Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
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a month by email. French extracted from the Terms and Definitions clause of IEC
publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or need CISPR.

further assistance, please contact the Customer Service

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IEC 60317-12 ®
Edition 4.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –

Part 12: Polyvinyl acetal enamelled round copper wire, class 120

Spécifications pour types particuliers de fils de bobinage –

Partie 12: Fil de section circulaire en cuivre émaillé avec acétal de polyvinyle,

classe 120
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-8390-5

– 2 – IEC 60317-12:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, general notes and appearance . 6
3.1 Terms and definitions . 6
3.2 General notes . 6
3.2.1 Methods of test . 6
3.2.2 Winding wire . 7
3.3 Appearance . 7
4 Dimensions. 7
5 Electrical resistance . 7
6 Elongation . 7
7 Springiness . 7
8 Flexibility and adherence . 7
9 Heat shock . 7
9.1 Nominal conductor diameters up to and including 1,600 mm . 7
9.2 Nominal conductor diameters over 1,600 mm . 8
10 Cut-through . 8
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to and
including 2,500 mm) . 8
12 Resistance to solvents . 9
13 Breakdown voltage . 9
14 Continuity of insulation . 9
15 Temperature index . 9
16 Resistance to refrigerants . 9
17 Solderability . 9
18 Heat or solvent bonding . 10
19 Dielectric dissipation factor . 10
20 Resistance to transformer oil . 10
21 Loss of mass . 10
23 Pin hole test . 10
30 Packaging . 10
Bibliography . 11

Table 1 – Heat shock . 8
Table 2 – Resistance to abrasion . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 12: Polyvinyl acetal enamelled round copper wire, class 120

FOREWORD
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International Standard IEC 60317-12 has been prepared by IEC technical committee 55:
Winding wires.
This fourth edition of IEC 60317-12 cancels and replaces the third edition published in 2010.
This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) modification of the Scope;
b) addition of reference to transformer oil resistance test method in Clause 20.
...