IEC 60851-5:2008
(Main)Winding wires - Test methods - Part 5: Electrical properties
Winding wires - Test methods - Part 5: Electrical properties
IEC 60851-5:2008 specifies the following tests:
- Test 5: Electrical resistance;
- Test 13: Breakdown voltage;
- Test 14: Continuity of insulation;
- Test 19: Dielectric dissipation factor.
Significant revisions to the previous edition include the following points:
- In Subclause 5.3, the addition of the use of carbon brush electrodes for the counting discontinuities during the high voltage continuity test, as an alternative to the V-groove pulley electrode; and
- Clarifications in the breakdown voltage test for round wires larger than 2,500 mm and for fibrous covered wires.
Fils de bobinage - Méthodes d'essai - Partie 5: Propriétés électriques
La CEI 60851-5:2008 donne les méthodes d'essai suivantes:
- Essai 5: Résistance électrique;
- Essai 13: Tension de claquage;
- Essai 14: Continuité de l'enveloppe isolante;
- Essai 19: Facteur de dissipation diélectrique.
Les modifications significatives par rapport à l'édition précédente comprennent les points suivants:
- Au Paragraphe 5.3, l'ajout de l'utilisation des électrodes balais en carbone pour le comptage des discontinuités pendant l'essai de continuité sous haute tension, comme alternative à l'électrode poulie ayant une gorge en forme de "V"; et
- Des clarifications apportées à l'essai de la tension de claquage pour les fils de section circulaire avec diamètre nominal du conducteur supérieur à 2,500 mm et pour les fils guipés de fibre.
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IEC 60851-5
Edition 4.0 2008-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Winding wires – Test methods –
Part 5: Electrical properties
Fils de bobinage – Méthodes d’essai –
Partie 5: Propriétés électriques
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
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International Standards for all electrical, electronic and related technologies.
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IEC 60851-5
Edition 4.0 2008-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Winding wires – Test methods –
Part 5: Electrical properties
Fils de bobinage – Méthodes d’essai –
Partie 5: Propriétés électriques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 29.060.10 ISBN 2-8318-9937-0
– 2 – 60851-5 © IEC:2008
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Test 5: Electrical resistance.7
4 Test 13: Breakdown voltage .8
4.1 Principle.8
4.2 Equipment.8
4.3 Enamelled round wire with a nominal conductor diameter up to and including
0,100 mm .9
4.4 Enamelled round wire with a nominal conductor diameter over 0,100 mm up
to and including 2,500 mm.10
4.4.1 Test at room temperature .10
4.4.2 Test at elevated temperature .11
4.5 Round wire with a nominal conductor diameter over 2,500 mm.12
4.5.1 Test at room temperature .12
4.5.2 Test at elevated temperature .14
4.6 Fibre wound round wire .14
4.6.1 Test at room temperature .14
4.6.2 Test at elevated temperature .16
4.7 Rectangular wire .16
4.7.1 Test at room temperature .16
4.7.2 Test at elevated temperature .16
5 Test 14: Continuity of insulation (applicable to enamelled round and tape wrapped
round wire) .17
5.1 General .17
5.2 Low-voltage continuity (nominal conductor diameter up to and including
0,050 mm).17
5.3 High-voltage continuity (nominal conductor diameter over 0,050 mm up to
and including 1,600 mm) .17
5.3.1 Principle .17
5.3.2 Equipment .18
5.3.3 Procedure.21
5.3.4 Result.22
6 Test 19: Dielectric dissipation factor (applicable to enamelled wire and bunched
wire) .22
6.1 Principle.22
6.2 Equipment.22
6.3 Specimen .23
6.3.1 Specimen for a metal bath electrode.23
6.3.2 Specimen for a conductive suspension electrode.23
6.4 Procedure .24
6.5 Result .24
7 Test 23: Pin hole test.24
Annex A (informative) Dissipation factor methods .25
Figure 1 – Arrangement of cylinder and specimen for the breakdown voltage test.10
60851-5 © IEC:2008 – 3 –
Figure 2 – Device for twisting the specimen for breakdown voltage test .11
Figure 3 – U-bend specimen for the breakdown voltage test (specimen placed in shot
bath).13
Figure 4 – Coil-wound specimen for the breakdown voltage test .15
Figure 5 – Apparatus for testing the low-voltage continuity of covering .17
Figure 6 – High-voltage d.c. continuity – Pulleys for wire size 0,050 mm to 0,250 mm .19
Figure 7 – Pulley dimensions and spacing for wire size 0,250 mm to 1,600 mm .19
Figure 8a – Graphite fibre single brush electrode assembly .20
Figure 8b – Graphite fibre dual brush electrode assembly.21
Figure 8 – Graphite fibre single or dual brush electrode asssembly.21
Figure 9 – Suitable electrode arrangement for testing the dielectric dissipation factor.23
Figure A.1 – Example of linear method for sole coating.27
Figure A.2 – Example of logarithmic method for sole coating .27
Table 1 – Rates of test voltage increase .8
Table 2 – Loads applied to the wire .9
Table 3 – Loads applied to the wire and number of twists .11
Table 4 – Fault currents .18
Table 5 – Test voltages.22
– 4 – 60851-5 © IEC:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WINDING WIRES –
TEST METHODS –
Part 5: Electrical properties
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
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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
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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 in
...
IEC 60851-5 ®
Edition 4.1 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Winding wires – Test methods –
Part 5: Electrical properties
Fils de bobinage – Méthodes d’essai –
Partie 5: Propriétés électriques
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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Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.
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Email: inmail@iec.ch
Web: www.iec.ch
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 corrigenda or an amendment might have been published.
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in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
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A propos de la CEI
La Commission Electrotechnique Internationale (CEI) 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 CEI
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définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
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Service clients ou contactez-nous:
Email: csc@iec.ch
Tél.: +41 22 919 02 11
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IEC 60851-5 ®
Edition 4.1 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Winding wires – Test methods –
Part 5: Electrical properties
Fils de bobinage – Méthodes d’essai –
Partie 5: Propriétés électriques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX CL
ICS 29.060.10 ISBN 978-2-88912-611-8
– 2 – 60851-5 IEC:2008+A1:2011
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Test 5: Electrical resistance. 7
4 Test 13: Breakdown voltage . 8
4.1 Principle . 8
4.2 Equipment . 8
4.3 Enamelled round wire with a nominal conductor diameter
up to and including 0,100 mm . 9
4.3.1 Grade 1 to grade 3 with a nominal diameter up to
and including 0,100 mm . 9
4.3.2 Grade of FIW 3 to FIW 9 with a nominal conductor diameter
up to and including 1,600 mm . 10
4.4 Enamelled round wire with a nominal conductor diameter over 0,100 mm up
to and including 2,500 mm, grade 1 to grade 3 . 11
4.4.1 Test at room temperature . 11
4.4.2 Test at elevated temperature . 12
4.5 Round wire with a nominal conductor diameter over 2,500 mm . 13
4.5.1 Test at room temperature . 13
4.5.2 Test at elevated temperature . 15
4.6 Fibre wound round wire . 15
4.6.1 Test at room temperature . 15
4.6.2 Test at elevated temperature . 16
4.7 Rectangular wire . 17
4.7.1 Test at room temperature . 17
4.7.2 Test at elevated temperature . 17
5 Test 14: Continuity of insulation (applicable to enamelled round and tape wrapped
round wire) . 17
5.1 General . 17
5.2 Low-voltage continuity (nominal conductor diameter up to and including
0,050 mm, grade 1 to grade 3) . 18
5.3 High-voltage continuity (nominal conductor diameter over 0,050 mm up to
and including 1,600 mm, grade 1 to grade 3, and over 0,035 mm, up to and
including 1,600 mm, grade 3 of FIW 3 to FIW 9) . 19
5.3.1 Principle . 19
5.3.2 Equipment . 19
5.3.3 Procedure . 24
5.3.4 Result . 25
5.4 Inline high-voltage continuity (wires in accordance with grade of FIW 3
to FIW 10 with nominal conductor diameter over 0,035 mm up to
and including 1,600 mm) . 25
5.4.1 Principle . 25
5.4.2 Equipment . 26
5.4.3 Procedure . 26
5.4.4 Result . 27
60851-5 IEC:2008+A1:2011 – 3 –
6 Test 19: Dielectric dissipation factor (applicable to enamelled wire and bunched
wire) . 27
6.1 Principle . 27
6.2 Equipment . 28
6.3 Specimen . 29
6.3.1 Specimen for a metal bath electrode . 29
6.3.2 Specimen for a conductive suspension electrode . 29
6.4 Procedure . 29
6.5 Result . 29
7 Test 23: Pin hole test. 29
Annex A (informative) Dissipation factor methods . 31
Figure 1 – Arrangement of cylinder and specimen for the breakdown voltage test . 10
Figure 2 – Device for twisting the specimen for breakdown voltage test . 12
Figure 3 – U-bend specimen for the breakdown voltage test
(specimen placed in shot bath) . 14
Figure 4 – Coil-wound specimen for the breakdown voltage test . 16
Figure 5 – Apparatus for testing the low-voltage continuity of covering . 18
Figure 6 – High-voltage d.c. continuity – Pulleys for wire size 0,050 mm to 0,250 mm . 21
Figure 7 – Pulley dimensions and spacing for wire size 0,250 mm to 1,600 mm . 21
Figure 8a – Graphite fibre single brush electrode assembly . 22
Figure 8b – Graphite fibre dual brush electrode assembly . 23
Figure 8 – Graphite fibre single or dual brush electrode asssembly . 23
Figure 9 – Suitable electrode arrangement for testing the dielectric dissipation factor . 28
Figure A.1 – Example of linear method for sole coating . 33
Figure A.2 – Example of logarithmic method for sole coating . 33
Table 1 – Rates of test voltage increase . 8
Table 2 – Loads applied to the wire . 9
Table 3 – Loads applied to the wire and number of twists . 12
Table 4 – Off-line HVC fault currents . 20
Table 5 – Test voltages. 24
able 5.1 – Off-line HVC test voltages for grades 1 – 3 . 24
Table 5.2 – Off-line HVC test voltages for grade of FIW 3 – FIW 9 . 25
Table 6 – In-line HVC fault currents . 26
Table 7 – In-line HVC test voltages . 27
– 4 – 60851-5 IEC:2008+A1:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WINDING WIRES –
TEST METHODS –
Part 5: Electrical properties
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 elec
...
IEC 60851-5 ®
Edition 4.2 2019-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Winding wires – Test methods –
Part 5: Electrical properties
Fils de bobinage – Méthodes d’essai –
Partie 5: Propriétés électriques
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.
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questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
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IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
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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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
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Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications IEC
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IEC 60851-5 ®
Edition 4.2 2019-09
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Winding wires – Test methods –
Part 5: Electrical properties
Fils de bobinage – Méthodes d’essai –
Partie 5: Propriétés électriques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-7427-9
IEC 60851-5 ®
Edition 4.2 2019-09
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Winding wires – Test methods –
Part 5: Electrical properties
Fils de bobinage – Méthodes d’essai –
Partie 5: Propriétés électriques
– 2 – IEC 60851-5:2008+AMD1:2011
+AMD2:2019 CSV IEC 2019
CONTENTS
1 Scope . 7
2 Normative references . 7
3 Test 5: Electrical resistance. 7
4 Test 13: Breakdown voltage . 8
4.1 Principle . 8
4.2 Equipment . 8
4.3 Enamelled round wire with a nominal conductor diameter up to and including
0,100 mm . 9
4.3.1 Grade 1 to grade 3 with a nominal diameter up to and including 0,100
mm . 9
4.3.2 Grade of FIW 3 to FIW 9 with a nominal conductor diameter up to
and including 1,600 mm . 10
4.4 Enamelled round wire with a nominal conductor diameter over 0,100 mm up
to and including 2,500 mm, grade 1 to grade 3 . 11
4.4.1 Test at room temperature . 11
4.4.2 Test at elevated temperature . 12
4.5 Round wire with a nominal conductor diameter over 2,500 mm . 13
4.5.1 Test at room temperature . 13
4.5.2 Test at elevated temperature . 15
4.6 Fibre wound round wire . 15
4.6.1 Test at room temperature . 15
4.6.2 Test at elevated temperature . 16
4.7 Rectangular wire . 17
4.7.1 Test at room temperature . 17
4.7.2 Test at elevated temperature . 17
5 Test 14: Continuity of insulation (applicable to enamelled round and tape wrapped
round wire) . 17
5.1 General . 17
5.2 Low-voltage continuity (nominal conductor diameter up to and including
0,050 mm, grade 1 to grade 3) . 18
5.3 High-voltage continuity (nominal conductor diameter over 0,050 mm up to
and including 1,600 mm, grade 1 to grade 3, and over 0,035 mm, up to and
including 1,600 mm, grade 3 of FIW 3 to FIW 9) . 19
5.3.1 Principle . 19
5.3.2 Equipment . 19
5.3.3 Procedure . 24
5.3.4 Result . 25
5.4 Inline high-voltage continuity (wires in accordance with grade of FIW 3 to
FIW 10 with nominal conductor diameter over 0,035 mm up to and including
1,600 mm) . 25
5.4.1 Principle . 25
5.4.2 Equipment . 26
5.4.3 Procedure . 26
5.4.4 Result . 27
6 Test 19: Dielectric dissipation factor (applicable to enamelled wire and bunched
wire) . 27
6.1 Principle . 27
6.2 Equipment . 28
+AMD2:2019 CSV IEC 2019
6.3 Specimen . 29
6.3.1 Specimen for a metal bath electrode . 29
6.3.2 Specimen for a conductive suspension electrode . 29
6.4 Procedure . 29
6.5 Result . 29
7 Test 23: Pin hole test. 29
Annex A (informative) Dissipation factor methods . 31
A.1 Tangent delta – Intersection point . 31
A.2 Test methods . 31
A.2.1 Method A . 31
A.2.2 Method B – Wire coated with a conductive film . 32
A.3 Interpretation of results . 32
A.3.1 General . 32
A.3.2 Linear method . 32
A.3.3 Logarithmic method . 33
Figure 1 – Arrangement of cylinder and specimen for the breakdown voltage test . 10
Figure 2 – Device for twisting the specimen for breakdown voltage test . 12
Figure 3 – U-bend specimen for the breakdown voltage test (specimen placed in shot
bath) . 14
Figure 4 – Coil-wound specimen for the breakdown voltage test . 16
Figure 5 – Apparatus for testing the low-voltage continuity of covering . 18
Figure 6 – High-voltage d.c. continuity – Pulleys for wire size 0,050 mm to 0,250 mm . 20
Figure 7 – Pulley dimensions and spacing for wire size 0,250 mm to 1,600 mm . 21
Figure 8a – Graphite fibre single brush electrode assembly . 22
Figure 8b – Graphite fibre dual brush electrode assembly . 23
Figure 8 – Graphite fibre single or dual brush electrode asssembly . 23
Figure 9 – Suitable electr
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