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
04-Jun-2020
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
05-Jun-2020
Ref Project

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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
IEC 60317-12:2020-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
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

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 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

---------------------- Page: 4 ----------------------
IEC 60317-12:2020 © IEC 2020 – 3 –
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

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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

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.
---------------------- Page: 5 ----------------------
– 4 – IEC 60317-12:2020 © IEC 2020
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.
---------------------- Page: 6 ----------------------
IEC 60317-12:2020 © IEC 2020 – 5 –
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).
---------------------- Page: 7 ----------------------
– 6 – IEC 60317-12:2020 © 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 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.
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 60317-0-1:2013, Specifications for particular types of winding wires – Part 0-1: General

requirements – Enamelled round copper wire
IEC 60317-0-1:2013/AMD1:2019
3 Terms, definitions, general notes and appearance
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60317-0-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.2 General notes
3.2.1 Methods of test

Subclause 3.2.1 of IEC 60317-0-1:2013 and IEC 60317-0-1:2013/AMD1:2019 applies. In case

of inconsistencies between IEC 60317-0-1 and this document, IEC 60317-12 shall prevail.

---------------------- Page: 8 ----------------------
IEC 60317-12:2020 © IEC 2020 – 7 –
3.2.2 Winding wire

Class 120 is a thermal class that requires a minimum temperature index of 120 and a heat

shock temperature of at least 155 °C.

The temperature in degrees Celsius corresponding to the temperature index is not necessarily

that at which it is recommended that the wire be operated and this will depend on many

factors, including the type of equipment involved.
3.3 Appearance
Subclause 3.3 of IEC 60317-0-1:2013 applies.
4 Dimensions
Clause 4 of IEC 60317-0-1:2013 applies.
5 Electrical resistance
Clause 5 of IEC 60317-0-1:2013 and IEC 60317-0-1:2013/AMD1:2019 applies.
6 Elongation
Clause 6 of IEC 60317-0-1:2013 applies.
7 Springiness
Clause 7 of IEC 60317-0-1:2013 applies.
8 Flexibility and adherence

Clause 8 of IEC 60317-0-1:2013 applies, where the constant K used for the calculation of the

number of revolutions for the peel test shall be 175 mm.
9 Heat shock

Clause 9 of IEC 60317-0-1:2013 applies. The minimum heat shock temperature shall be

155 °C.
9.1 Nominal conductor diameters up to and including 1,600 mm

The coating shall show no crack. The mandrel diameter shall be as specified in Table 1.

---------------------- Page: 9 ----------------------
– 8 – IEC 60317-12:2020 © IEC 2020
Table 1 – Heat shock
Elongation before
Nominal conductor diameter winding on Mandrel diameter
mandrel
mm %
Over Up to and
including
– 0,050 20 0,150 mm
0,050 1,600 – D
Or until it breaks, whichever is less.
D is the overall diameter of the wire.
9.2 Nominal conductor diameters over 1,600 mm
Subclause 9.2 of IEC 60317-0-1:2013 applies.
10 Cut-through
No failure shall occur within 2 min at 170 °C.
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to
and including 2,500 mm)
The wire shall meet the requirements given in Table 2.

For intermediate nominal conductor diameters, the value of the next larger nominal conductor

diameter shall be taken.
---------------------- Page: 10 ----------------------
IEC 60317-12:2020 © IEC 2020 – 9 –
Table 2 – Resistance to abrasion
Grade 1 Grade 2 Grade 3
Minimum Minimum Minimum
Nominal
Minimum force to Minimum force to Minimum force to
conductor
average force failure of average force failure of average force failure of
diamet
...

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