IEC 60851-2:2009

Winding wires - Test methods - Part 2: Determination of dimensions

IEC 60851-2:2009 specifies the following method of test: Test 4: Dimensions. For definitions, general notes on methods of test and the complete series of methods of test for winding wires, see IEC 60851-1. Technical revisions of note include recognition of the use of optical micrometers in determining the dimensions of round and rectangular enamelled wire.

Fils de bobinage - Méthodes d'essai - Partie 2: Détermination des dimensions

La CEI 60851-2:2009 donne la méthode d'essai suivante: Essai 4: Dimensions. Pour les définitions, les généralités concernant les méthodes d'essai et les séries complètes des méthodes d'essai des fils de bobinage, voir la CEI 60851-1. Les révisions techniques à noter incluent la reconnaissance de l'utilisation des micromètres optiques pour la détermination des dimensions des fils émaillés de section circulaire et rectangulaire.

General Information

• Status: Published
• Publication Date: 29-Sep-2009
• 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: 31-Oct-2009
• Completion Date: 30-Sep-2009

Relations

• Amended By: IEC 60851-2:2009/AMD1:2015 - Amendment 1 - Winding wires - Test methods - Part 2: Determination of dimensions
• Effective Date: 05-Sep-2023
• Amended By: IEC 60851-2:2009/AMD2:2019 - Amendment 2 - Winding wires - Test methods - Part 2: Determination of dimensions
• Effective Date: 05-Sep-2023
• Revises: IEC 60851-2:1996/AMD2:2003 - Amendment 2 - Winding Wires - Test methods - Part 2: Determination of dimensions
• Effective Date: 05-Sep-2023
• Revises: IEC 60851-2:1996 - Methods of test for winding wires - Part 2: Determination of dimensions
• Effective Date: 05-Sep-2023
• Revises: IEC 60851-2:1996/AMD1:1997 - Amendment 1 - Methods of test for winding wires - Part 2: Determination of dimensions
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60851-2 ®
Edition 3.0 2009-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Winding wires – Test methods –
Part 2: Determination of dimensions

Fils de bobinage – Méthodes d'essai –
Partie 2: Détermination des dimensions

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.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
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et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
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IEC 60851-2 ®
Edition 3.0 2009-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Winding wires – Test methods –
Part 2: Determination of dimensions

Fils de bobinage – Méthodes d'essai –
Partie 2: Détermination des dimensions

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
K
CODE PRIX
ICS 29.060.10 ISBN 978-2-88910-310-2
– 2 – 60851-2 © IEC:2009
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Test 4: Dimensions.6
3.1 Equipment.6
3.1.1 Round and rectangular wire.6
3.1.2 Bunched wire.7
3.2 Procedure .7
3.2.1 Conductor dimension.7
3.2.2 Out-of-roundness of the conductor .7
3.2.3 Rounding of corners of rectangular wire .8
3.2.4 Increase in dimension due to the insulation .8
3.2.5 Overall dimension.8
3.2.6 Increase in diameter due to the bonding layer of enamelled round
wire .9

Figure 1 – Conical mandrel .10

Table 1 – Types of winding wires .6
Table 1a – Enamelled round wire.6
Table 1b – All the types of winding wires except enamelled round wire .7
Table 2 – Determination of the conductor diameter .9

60851-2 © IEC:2009 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WINDING WIRES –
TEST METHODS –
Part 2: Determination of dimensions

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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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.
International Standard IEC 60851-2 has been prepared by IEC technical committee 55:
Winding wires.
This third edition cancels and replaces the second edition published in 1996 and its
amendment 1 (1997) and amendment 2 (2003), and constitutes a technical revision.
Technical revisions of note include recognition of the use of optical micrometers in
determining the dimensions of round and rectangular enamelled wire.

– 4 – 60851-2 © IEC:2009
The text of this standard is based on the following documents:
FDIS Report on voting
55/1144/FDIS 55/1163/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 60851 series, under the general title Winding wires – Test
methods, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
60851-2 © IEC:2009 – 5 –
INTRODUCTION
This part of IEC 60851 forms an element of a series of standards which deals with insulated
wires used for windings in electrical equipment. The series has three groups describing
a) methods of test (IEC 60851);
b) specifications (IEC 60317);
c) packaging (IEC 60264).
– 6 – 60851-2 © IEC:2009
WINDING WIRES –
TEST METHODS –
Part 2: Determination of dimensions

1 Scope
This part of IEC 60851 specifies the following method of test:
– Test 4: Dimensions.
For definitions, general notes on methods of test and the complete series of methods of test
for winding wires, see IEC 60851-1.
2 Normative references
The following referenced documents are indispensable for the application 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 60851-1, Winding wires – Test methods – Part 1: General
IEC 60851-5:2008, Winding wires – Test methods – Part 5: Electrical properties
3 Test 4: Dimensions
3.1 Equipment
3.1.1 Round and rectangular wire
The equipment used shall have a resolution of 2 μm or less for wires over 0,200 mm and for
wires up to and including 0,200 mm, a resolution of 1 μm or less. Both mechanical contact
and optical non-contact micrometers may be used. If mechanical contact micrometers are
used, the ratio of measuring force and anvil diameter shall be in accordance with the range as
given in Table 1a and Table 1b. The diameter range of the spindle and anvil is also given in
Table 1a and Table 1b. If optical micrometers are used, the average of the readings shall be
recorded as the diameter of the conductor. If a specific measuring equipment must be used, it
shall be agreed upon between the customer and the supplier.
Table 1 – Types of winding wires
Table 1a – Enamelled round wire
Nominal conductor
Anvil diameter Measuring force(N)/anvil
Type of winding wire
diameter
mm diameter(mm) = P(N/mm)
mm
≤ 0,100 2 to 8 0,01 ≤ P ≤ 0,16
5 to 8
Enamelled round wire 0,100 < d ≤ 0,45 0,16 < P ≤ 0,32
5 to 8
> 0,45 0,32 < P ≤ 0,80
60851-2 © IEC:2009 – 7 –
Table 1b – All the types of winding wires except en
...

IEC 60851-2 ®
Edition 3.1 2015-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Winding wires – Test methods –
Part 2: Determination of dimensions

Fils de bobinage – Méthodes d'essai –
Partie 2: Détermination des dimensions

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
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IEC 60851-2 ®
Edition 3.1 2015-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Winding wires – Test methods –

Part 2: Determination of dimensions

Fils de bobinage – Méthodes d'essai –

Partie 2: Détermination des dimensions

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-2703-9

IEC 60851-2 ®
Edition 3.1 2015-05
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Winding wires – Test methods –
Part 2: Determination of dimensions

Fils de bobinage – Méthodes d'essai –
Partie 2: Détermination des dimensions

– 2 – IEC 60851-2:2009
+AMD1:2015 CSV  IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Test 4: Dimensions . 6
3.1 Equipment . 6
3.1.1 Round and rectangular wire . 6
3.1.2 Bunched wire . 7
3.2 Procedure . 7
3.2.1 Conductor dimension . 7
3.2.2 Out-of-roundness of the conductor . 8
3.2.3 Rounding of corners of rectangular wire . 8
3.2.4 Increase in dimension due to the insulation . 8
3.2.5 Overall dimension . 9
3.2.6 Increase in diameter due to the bonding layer of enamelled round
wire . 10
Annex A (informative) . 11

Figure 1 – Conical mandrel . 10

Table 1 – Types of winding wires . 6
Table 1a – Enamelled round wire . 6
Table 1b – All the types of winding wires except enamelled round wire . 7
Table 1c – Paper covered wire . 7
Table 2 – Determination of the conductor diameter . 9
Table A.1 – Relationship between force, pressure, anvil diameter and rectangular wire
surface . 11

+AMD1:2015 CSV  IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WINDING WIRES –
TEST METHODS –
Part 2: Determination of dimensions
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 consolidated version of the official IEC Standard and its amendment has been prepared
for user convenience.
IEC 60851-2 edition 3.1 contains the third edition (2009-09) [documents 55/1144/FDIS and
55/1163/RVD] and its amendment 1 (2015-05) [documents 55/1520/FDIS and 55/1526/RVD].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions and deletions are displayed in red, with deletions being
struck through. A separate Final version with all changes accepted is available in this
publication.
– 4 – IEC 60851-2:2009
+AMD1:2015 CSV  IEC 2015
International Standard IEC 60851-2 has been prepared by IEC technical committee 55:
Winding wires.
This third edition constitutes a technical revision.
Technical revisions of note include recognition of the use of optical micrometers in
determining the dimensions of round and rectangular enamelled wire.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 60851 series, under the general title Winding wires – Test
methods, can be found on the IEC website.
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site unde
...

IEC 60851-2 ®
Edition 3.2 2019-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Winding wires – Test methods –
Part 2: Determination of dimensions

Fils de bobinage – Méthodes d'essai –
Partie 2: Détermination des dimensions

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.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
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 Electropedia - www.electropedia.org
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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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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 CISPR.

need further assistance, please contact the Customer Service

Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
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IEC 60851-2 ®
Edition 3.2 2019-05
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Winding wires – Test methods –

Part 2: Determination of dimensions

Fils de bobinage – Méthodes d'essai –

Partie 2: Détermination des dimensions

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-7004-2

IEC 60851-2 ®
Edition 3.2 2019-05
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Winding wires – Test methods –
Part 2: Determination of dimensions

Fils de bobinage – Méthodes d'essai –
Partie 2: Détermination des dimensions

– 2 – IEC 60851-2:2009+AMD1:2015
+AMD2:2019 CSV  IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Test 4: Dimensions . 6
3.1 Equipment . 6
3.1.1 Round and rectangular wire . 6
3.1.2 Bunched wire . 7
3.2 Procedure . 7
3.2.1 Conductor dimension . 7
3.2.2 Out-of-roundness of the conductor . 8
3.2.3 Rounding of corners of rectangular wire . 8
3.2.4 Increase in dimension due to the insulation . 8
3.2.5 Overall dimension . 9
3.2.6 Increase in diameter due to the bonding layer of enamelled round
wire . 10
3.2.7 Increase in dimensions due to the bonding layer of enamelled
rectangular wire . 10
Annex A (informative) . 11

Figure 1 – Conical mandrel . 10

Table 1 – Types of winding wires . 6
Table 1a – Enamelled round wire . 6
Table 1b – All the types of winding wires except enamelled round wire . 7
Table 1c – Paper covered wire . 7
Table 2 – Determination of the conductor diameter . 9
Table A.1 – Relationship between force, pressure, anvil diameter and rectangular wire
surface . 11

+AMD2:2019 CSV  IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WINDING WIRES –
TEST METHODS –
Part 2: Determination of dimensions
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,
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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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 consolidated version of the official IEC Standard and its amendments has been
prepared for user convenience.
IEC 60851-2 edition 3.2 contains the third edition (2009-09) [documents 55/1144/FDIS
and 55/1163/RVD], its amendment 1 (2015-05) [documents 55/1520/FDIS and 55/1526/
RVD] and its amendment 2 (2019-05) [documents 55/1681/CDV and 55/1737/RVC].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendments 1 and 2. Additions and deletions are displayed in red, with
deletions being struck through. A separate Final version with all changes accepted is
available in this publication.

– 4 – IEC 60851-2:2009+AMD1:2015
+AMD2:2019 CSV  IEC 2019
International Standard IEC 60851-2 has been prepared by IEC technical committee 55:
Winding wires.
This third edition constitutes a technical revision.
Technical revisions of note include recognition of the use of optical micrometers in
determining the dimensions of round and rectangular enamelled wire.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 60851 series, under the general title Winding wires – Test
methods, can be found on the IEC website.
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication 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
...