EN IEC 60172:2021
(Main)Test procedure for the determination of the temperature index of enamelled and tape wrapped winding wires
Test procedure for the determination of the temperature index of enamelled and tape wrapped winding wires
IEC 60172:2020 is available as IEC 60172:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60172:2020 specifies, in accordance with the provisions of IEC 60216-1, a method for evaluating the temperature index of enamelled wire, varnished or unvarnished with an impregnating agent, and of tape wrapped round and rectangular wire, in air at atmospheric pressure by periodically monitoring changes in response to AC proof voltage tests. This procedure does not apply to fibre-insulated wire or wire covered with tapes containing inorganic fibres. NOTE The data obtained according to this test procedure provide the designer and development engineer with information for the selection of winding wire for further evaluation of insulation systems and equipment tests. This fifth edition cancels and replaces the fourth edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - revision of 3.1, definition of thermal index; - revision of 3.3, time to failure; - revisions to 5.1.1 for clarity and to reduce the range wire size range to which the test applies; - revisions to 5.1.2 for tape wrapped round and enamelled or tape wrapped rectangular wire for clarity; - revision to Clause 9 to add the correlation coefficient, r to the report.
Prüfverfahren zur Bestimmung des Temperaturindex von Lackdrähten und bandumwickelten Drähten
Méthode d'essai pour la détermination de l'indice de température des fils de bobinage émaillés et enveloppés de ruban
IEC 60172:2020 est disponible sous forme de IEC 60172:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60172:2020 spécifie, conformément aux dispositions de l’IEC 60216-1, une méthode pour l’évaluation de l'indice de température du fil émaillé, imprégné ou non imprégné avec un matériau d’imprégnation, et du fil de section circulaire ou rectangulaire, enveloppé de ruban, dans l’air à la pression atmosphérique, en contrôlant périodiquement les variations de réponse aux essais de tension d'épreuve en courant alternatif. Cette méthode ne concerne pas le fil avec revêtement fibreux ou le fil recouvert de rubans contenant des fibres non organiques. NOTE Les données obtenues au moyen de cette méthode d'essai fournissent à l'ingénieur d'étude et de développement les informations pour sélectionner le fil de bobinage et obtenir une meilleure évaluation des systèmes isolants et des essais d'équipement. Cette cinquième édition annule et remplace la quatrième édition parue en 2015. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - révision du 3.1, définition d’indice thermique; - révision du 3.3, durée de fonctionnement avant défaillance; - révisions du 5.1.1 à des fins de clarification et pour limiter la plage des dimensions de fils à laquelle l’essai s’applique; - révisions à des fins de clarification du 5.1.2 relatif au fil de section circulaire enveloppé d'un ruban et au fil de section rectangulaire émaillé ou enveloppé d'un ruban; - révision de l’Article 9 afin d’ajouter le coefficient de corrélation, r au rapport.
Preskusni postopek za ugotavljanje temperaturnega indeksa emajlirane in s trakom ovite žice za navitja (IEC 60172:2020)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2021
Nadomešča:
SIST EN 60172:2015
Preskusni postopek za ugotavljanje temperaturnega indeksa emajlirane in s
trakom ovite žice za navitja (IEC 60172:2020)
Test procedure for the determination of the temperature index of enamelled and tape
wrapped winding wires (IEC 60172:2020)
Prüfverfahren zur Bestimmung des Temperaturindex von Lackdrähten und
bandumwickelten Drähten (IEC 60172:2020)
Méthode d'essai pour la détermination de l'indice de température des fils de bobinage
émaillés et enveloppés de ruban (IEC 60172:2020)
Ta slovenski standard je istoveten z: EN IEC 60172:2021
ICS:
17.200.01 Termodinamika na splošno Thermodynamics in general
29.060.10 Žice Wires
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60172
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2021
ICS 29.060.10 Supersedes EN 60172:2015 and all of its amendments
and corrigenda (if any)
English Version
Test procedure for the determination of the temperature index of
enamelled and tape wrapped winding wires
(IEC 60172:2020)
Méthode d'essai pour la détermination de l'indice de Prüfverfahren zur Bestimmung des Temperaturindex von
température des fils de bobinage émaillés et enveloppés de Lackdrähten und bandumwickelten Drähten
ruban (IEC 60172:2020)
(IEC 60172:2020)
This European Standard was approved by CENELEC on 2020-12-28. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60172:2021 E
European foreword
The text of document 55/1876/FDIS, future edition 5 of IEC 60172, prepared by IEC/TC 55 "Winding
wires" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-09-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-12-28
document have to be withdrawn
This document supersedes EN 60172:2015 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 60172:2020 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60317 (series) NOTE Harmonized as EN 60317 (series)
IEC 60455-3-5 NOTE Harmonized as EN 60455-3-5
IEC 60464-3-2 NOTE Harmonized as EN 60464-3-2
Annex ZA
(normative)
Normative references to international publications with their
corresponding European publications
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.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60216-1 - Electrical insulating materials - Thermal EN 60216-1 -
endurance properties - Part 1: Ageing
procedures and evaluation of test results
IEC 60216-3 - Electrical insulating materials - Thermal - -
endurance properties - Part 3: Instructions
for calculating thermal endurance
characteristics
IEC 60172 ®
Edition 5.0 2020-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Test procedure for the determination of the temperature index of enamelled and
tape wrapped winding wires
Méthode d’essai pour la détermination de l’indice de température des fils de
bobinage émaillés et enveloppés de ruban
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-9086-6
– 2 – IEC 60172:2020 © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Summary of procedure . 7
5 Test specimens . 7
5.1 Preparation . 7
5.1.1 Enamelled non-tape wrapped round wire . 7
5.1.2 Tape wrapped round wire and enamelled or tape wrapped rectangular
wire . 10
5.2 Varnish impregnation . 12
5.3 Notes on number of test specimens . 13
5.4 Specimen holder . 13
5.4.1 For specimens according to 5.1.1 . 13
5.4.2 For specimens according to 5.1.2 . 13
6 Temperature exposure. 14
7 Test voltage and its application . 15
8 Calculations . 16
8.1 Specimen failure time . 16
8.2 Time to failure . 16
8.3 Linearity of data . 16
8.4 Calculating and plotting thermal endurance and temperature index . 17
9 Report . 18
Annex A (normative) Method for calculation of the regression line . 19
Annex B (normative) Correlation coefficient . 24
Bibliography . 25
Figure 1 – Device used to form enamelled round wire test specimen . 8
Figure 2 – Spacer . 8
Figure 3 – Twist forming jig . 9
Figure 4 – Test specimen set up in forming jig . 9
Figure 5 – Test specimen formed with loop cut . 10
Figure 6 – Jig for bending large magnet wire, dielectric test specimen . 11
Figure 7 – Forming jig and test specimen . 12
Figure 8 – Specimen holder . 13
Figure 9 – Thermal endurance graph – Temperature index . 17
Figure A.1 – Plot of regression line based on sample calculation (Table A.2) . 23
Table 1 – Force and number of twists for specimens . 8
Table 2 – Proof voltage for round enamelled wire . 10
Table 3 – Recommended exposure times in days per cycle. 14
Table 4 – Proof voltage for tape-wrapped round and for enamelled or tape-wrapped
rectangular wire . 15
IEC 60172:2020 © IEC 2020 – 3 –
Table A.1 – Commonly used test temperatures in degrees Celsius and the
corresponding kelvins with its reciprocal and reciprocal squared values . 21
Table A.2 – Sample calculation . 22
– 4 – IEC 60172:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TEST PROCEDURE FOR THE DETERMINATION OF THE TEMPERATURE
INDEX OF ENAMELLED AND TAPE WRAPPED WINDING WIRES
FOREWORD
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