IEC 60317-35:2013

Specifications for particular types of winding wires - Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a bonding layer

IEC 60317-35:2013 specifies the requirements of solderable enamelled round copper winding wire of class 155 with a dual coating. The underlying coating is based on poly-urethane resin, which may be modified providing it retains the chemical identity of the original resin and meets all specified wire requirements. The superimposed coating is a bonding layer based on a thermoplastic resin. NOTE - 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. The range of nominal conductor diameters covered by this standard is:
- Grade 1B: 0,020 mm up to and including 0,800 mm;
- Grade 2B: 0,020 mm up to and including 0,800 mm. The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013. This second edition cancels and replaces the first edition published in 1992, Amendment 1:1997 and Amendment 2:1999. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- new 3.2.2 containing general notes on winding wire, formerly a part of the scope;
- revision to references to IEC 60317-0-1:2013 to clarify that their application is normative;
- modification to Clause 15 to remove specific wire specimen sizes;
- consolidation of 17.1 and 17.2 of the solderability requirements;
- new Clause 23, Pin hole test. Key words: requirements of solderable enamelled round copper winding wire, class 155, dual coating

Spécifications pour types particuliers de fils de bobinage - Partie 35: Fil brasable de section circulaire en cuivre émaillé avec polyuréthane, classe 155, avec une couche adhérente

La CEI 60317-35:2013 spécifie les exigences pour les fils de bobinage brasables de section circulaire en cuivre émaillé de classe 155 avec un double revêtement. La sous-couche est à base de résine polyuréthanne, qui peut être modifiée sous réserve de conserver l'identité chimique de la résine initiale et de répondre à toutes les exigences spécifiées pour le fil. La surcouche est une couche adhérente à base de résine thermoplastique. NOTE - Une résine modifiée est une résine qui a subi une modification chimique, ou qui contient un ou plusieurs additifs pour améliorer les résultats obtenus ou les caractéristiques d'utilisation. La gamme des diamètres nominaux des conducteurs couverte par la présente norme est:
- Grade 1B: 0,020 mm jusqu'à 0,800 mm compris;
- Grade 2B: 0,020 mm jusqu'à 0,800 mm compris. Les diamètres nominaux des conducteurs sont spécifiés dans l'Article 4 de la CEI 60317-0-1. Cette deuxième édition annule et remplace la première édition parue en 1992, l'Amendement 1:1997 et l'Amendement 2:1999. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- un nouveau 3.2.2 contenant des notes générales sur le fil de bobinage intégrées auparavant au domaine d'application;
- la révision des références à la CEI 60317-0-1:2013 pour bien établir que leur application est normative;
- une modification de l'Article 15 pour retirer les tailles d'éprouvettes de fils spécifiques;
- la consolidation de 17.1 et 17.2 des exigences relatives à la brasabilité;
- un nouvel Article 23, Détection des microfissures en immersion. Mots clés: exigences pour les fils de bobinage brasables de section circulaire en cuivre émaillé, classe 155, double revêtement.

General Information

• Status: Published
• Publication Date: 13-Jun-2024
• ICS: 29.060.10 - Wires
• ICS: 31.220.10 - Plug-and-socket devices. Connectors
• Technical Committee: TC 55 - Winding wires
• Drafting Committee: WG 1 - TC 55/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 14-Oct-2013
• Completion Date: 15-Nov-2013

Relations

• Amended By: IEC 60317-35:2013/AMD2:2024 - Amendment 2 - Specifications for particular types of winding wires - Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a bonding layer
• Effective Date: 05-Sep-2023
• Amended By: IEC 60317-35:2013/AMD1:2019 - Amendment 1 - Specifications for particular types of winding wires - Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a bonding layer
• Effective Date: 05-Sep-2023
• Revises: IEC 60317-35:1992/AMD2:1999 - Amendment 2 - Specifications for particular types of winding wires - Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a bonding layer
• Effective Date: 05-Sep-2023
• Revises: IEC 60317-35:1992 - Specifications for particular types of winding wires - Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a bonding layer
• Effective Date: 05-Sep-2023
• Revises: IEC 60317-35:1992/AMD1:1997 - Amendment 1 - Specifications for particular types of winding wires - Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a bonding layer
• Effective Date: 05-Sep-2023

Overview

IEC 60317-35:2013 (consolidated with amendments to 2024) defines requirements for solderable polyurethane enamelled round copper winding wire, class 155, with a bonding layer. The standard covers wires with a dual coating: an underlying polyurethane-based enamel (which may be chemically modified while retaining the original resin identity) and a thermoplastic bonding layer to improve winding and bonding performance. It applies to nominal conductor diameters from 0.020 mm up to and including 0.800 mm (Grade 1B and Grade 2B) and is intended to be used together with IEC 60317-0-1:2013 for general requirements.

Key topics and technical requirements

• Thermal class and heat resistance: Class 155 requires a minimum temperature index of 155 and a minimum heat shock temperature of 175 °C.
• Mechanical and electrical tests: Includes requirements and test methods for electrical resistance, elongation, springiness, flexibility, adherence, breakdown voltage and continuity of insulation.
• Cut-through and heat resistance: No failure is permitted within 2 minutes at 200 °C for cut-through tests.
• Solderability: Consolidated solderability requirements cover wires across diameter ranges (nominal diameters ≤ 0.100 mm and > 0.100 mm).
• Bonding methods: Defines heat-bonding and solvent-bonding performance (bond strength of helical and twisted coils).
• Additional tests: Resistance to abrasion, solvents, refrigerants, transformer oil, dielectric dissipation factor, loss of mass and a new Pin hole test (Clause 23) introduced in the latest amendment.
• Diameter coverage: Nominal diameters follow Clause 4 of IEC 60317-0-1:2013; for abrasion tests, specified diameter grouping rules apply.

Applications and who uses this standard

IEC 60317-35 is used by:

• Winding wire manufacturers - for product specification, quality control and lab testing.
• Motor, transformer and coil designers - to select wire that meets thermal, solderability and mechanical needs.
• Procurement and specification engineers - to define acceptance criteria in purchase orders.
• Test laboratories and certification bodies - to perform required statutory and product testing. Typical applications include windings for motors, transformers, inductors, relays and other electromagnetic components where solderability and Class 155 thermal performance are required.

Related standards

• IEC 60317-0-1:2013 - General requirements for enamelled round copper wire (normative companion).
• IEC 60851 series - Test methods for winding wires.
• IEC 60264 - Packaging of winding wires.
• Other parts of the IEC 60317 series covering different wire types and classes.

This standard ensures consistent performance for solderable polyurethane-enamelled round copper winding wire (class 155, dual coating) and supports reliable selection, testing and procurement across electrical winding applications.

Standards Content (Sample)

IEC 60317-35 ®
Edition 2.2 2024-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Specifications for particular types of winding wires –
Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a
bonding layer
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 60317-35 ®
Edition 2.2 2024-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Specifications for particular types of winding wires –
Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a
bonding layer
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.10 ISBN 978-2-8322-9206-8
REDLINE VERSION – 2 – IEC 60317-35:2013+AMD1:2019
+AMD2:2024 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 . 7
3.2.1 Test methods . 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
10 Cut-through . 7
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to and
including 0,800 mm) . 8
12 Resistance to solvents . 8
13 Breakdown voltage . 8
14 Continuity of insulation . 8
15 Temperature index . 8
16 Resistance to refrigerants . 8
17 Solderability . 9
17.1 General . 9
17.2 Nominal conductor diameters up to and including 0,100 mm. 9
17.3 Nominal conductor diameters over 0,100 mm . 9
18 Heat or solvent bonding . 9
18.1 Heat bonding . 9
18.1.1 Heat bonding strength of a helical coil . 9
18.1.2 Bond strength of a twisted coil . 10
18.2 Solvent bonding . 10
19 Dielectric dissipation factor . 11
20 Resistance to transformer oil . 11
21 Loss of mass . 11
23 Pin hole test . 11
30 Packaging . 11
Bibliography . 12

Table 1 – Resistance to abrasion . 8
Table 2 – Loads . 10

+AMD2:2024 CSV © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 35: Solderable polyurethane enamelled
round copper wire, class 155, with a bonding layer

FOREWORD
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This consolidated version of the official IEC Standard and its amendments has been
prepared for user convenience.
IEC 60317-35 edition 2.1 contains the second edition (2013-10) [documents 55/1416/FDIS
and 55/1437/RVD], its amendment 1 (2019-06) [documents 55/1691/CDV and
55/1741/RVC] and its amendment 2 (2024-06) [documents 55/1989/CDV and
55/2024/RVC].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendments 1 and 2. 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 60317-35:2013+AMD1:2019
+AMD2:2024 CSV © IEC 2024
International Standard IEC 60317-35 has been prepared by IEC technical committee 55:
Winding wires.
This second edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– new 3.2.2 containing general notes on winding wire, formerly a part of the scope;
– revision to references to IEC 60317-0-1:2013 to clarify that their application is normative;
– modification to Clause 15 to remove specific wire specimen sizes;
– consolidation of 17.1 and 17.2 of the solderability requirements;
– new Clause 23, Pin hole test.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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.
This International Standard is to be used in conjunction with IEC 60317-0-1:2013 and its
Amendment 1:2019.
The numbering of clauses in this standard is not continuous from Clauses 20 and 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 amendments 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.
+AMD2:2024 CSV © IEC 2024
INTRODUCTION
This part of IEC 60317 is one of a series which deals with insulated wires used for windings in
electrical equipment. The series has three groups describing:
1) Winding wires – Test methods (IEC 60851);
2) Specifications for particular types of winding wires (IEC 60317);
3) Packaging of winding wires (IEC 60264).

REDLINE VERSION – 6 – IEC 60317-35:2013+AMD1:2019
+AMD2:2024 CSV © IEC 2024
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 35: Solderable polyurethane enamelled
round copper wire, class 155, with a bonding layer

1 Scope
This part of IEC 60317 specifies the requirements of solderable enamelled round copper
winding wire of class 155 with a dual coating. The underlying coating is based on poly-
urethane resin, which may be modified providing it retains the chemical identity of the original
resin and meets all specified wire requirements. The superimposed coating is a bonding layer
based on a thermoplastic resin.
NOTE 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.
The range of nominal conductor diameters covered by this standard is:
– Grade 1B: 0,020 mm up to and including 0,800 mm;
– Grade 2B: 0,020 mm up to and including 0,800 mm.
The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. 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
Subclause 3.1 of IEC 60317-0-1:2013 applies.
For the purposes of this document, the terms and definitions given in IEC 60317-0-1 apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp

There exists a consolidated edition 4.1:2021 that includes IEC 60317-0-1:2013 and its Amendment 1:2019.

+AMD2:2024 CSV © IEC 2024
3.2 General notes
3.2.1 Test methods
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 60317-0-1:2013 and this part of IEC 60317 document,
the latter IEC 60317-35 shall prevail.
3.2.2 Winding wire
Class 155 is a thermal class that requires a minimum temperature index of 155 and a heat
shock temperature of at least 175 °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.
9 Heat shock
Clause 9 of IEC 60317-0-1:2013 applies. The minimum heat shock temperature shall be
175 °C.
10 Cut-through
No failure shall occur within 2 min at 200 °C.

REDLINE VERSION – 8 – IEC 60317-35:2013+AMD1:2019
+AMD2:2024 CSV © IEC 2024
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to
and including 0,800 mm)
The wire shall meet the requirements given in Table 1.
For intermediate nominal conductor diameters, the value of the next larger nominal conductor
diameter shall be taken.
Table 1 – Resistance to abrasion
Grade 1B Grade 2B
Nominal conductor Minimum average Minimum force to Minimum average Minimum force to
diameter force to failure failure of each force to failure failure of each
measurement measurement
mm N N N N
0,250 2,30 1,95 4,10 3,50
0,280 2,50 2,10 4,40 3,70
0,315 2,70 2,30 4,75 4,00
0,355 2,90 2,50 5,10 4,30
0,400 3,15 2,70 5,45 4,60
0,450 3,40 2,90 5,80 4,90
0,500 3,65 3,10 6,20 5,25
0,560 3,90 3,30 6,65 5,60
0,630 4,20 3,55 7,10 6,00
0,710 4,50 3,80 7,60 6,45
0,800 4,80 4,10 8,10 6,90
12 Resistance to solvents
Test inappropriate.
13 Breakdown voltage
Clause 13 of IEC 60317-0-1:2013 applies. The elevated temperature shall be 155 °C.
14 Continuity of insulation
Clause 14 of IEC 60317-0-1:2013 applies.
15 Temperature index
Clause 15 of IEC 60317-0-1:2013 applies. The minimum temperature index shall be 155.
16 Resistance to refrigerants
Test inappropriate.
+AMD2:2024 CSV © IEC 2024
17 Solderability
17.1 General
The temperature of the solder bath shall be (390 ± 5) °C. The surface of the tinned wire shall
be smooth and free from holes and enamel residues.
17.117.2 Nominal conductor diameters up to and including 0,100 mm
The temperature of the solder bath shall be (390 ± 5) °C. The maximum immersion time shall
be 2 s.
The surface of the tinned wire shall be smooth and free from holes and enamel residues.
17.217.3 Nominal conductor diameters over 0,100 mm
The temperature of the solder bath shall be (390 ± 5) °C. The maximum immersion time (in
seconds) shall be the following multiple of the nominal conductor diameter (in millimetres)
with a minimum of 2 s.
Grade 1B Grade 2B
12 s/mm 16 s/mm
The surface of the tinned wire shall be smooth and free from holes and enamel residues.
18 Heat or solvent bonding
18.1 Heat bonding
18.1.1 Heat bonding strength of a helical coil
18.1.1.1 At room temperature
The specimens shall be prepared according to the test method, and the temperature of the
oven for bonding shall be fixed as agreed between purchaser and supplier for the different
types of bonding enamels. The suggested temperature for polyamide bonding enamel
is (200 ± 2) °C and the suggested temperature for polyvinyl butyral bonding enamel is
(170 ± 2) °C.
Results: when testing the specimens according to the test method, under the action of load
specified in Table 2, no turns (other than possibly the first and the last) shall separate.
18.1.1.2 At elevated temperature
The specimens shall be prepared and shall be conditioned as described in the test method.
The elevated temperature shall be fixed as agreed between purchaser and supplier for the
different types of bonding enamels. The suggested temperature for polyamide bonding
enamel is (155 ± 2) °C and the suggested temperature for polyvinyl butyral bonding enamel is
(90 ± 2) °C.
Results: when testing the specimens according to the test method, under the action of load
specified in Table 2, no turns (other than possibly the first and the last) shall separate.

REDLINE VERSION – 10 – IEC 60317-35:2013+AMD1:2019
+AMD2:2024 CSV © IEC 2024
Table 2 – Loads
Nominal conductor diameter Load
mm N
Over Up to Room Elevated
and including temperature temperature
a a
– 0,050
0,050 0,071 0,05 0,04
0,071 0,100 0,08 0,06
0,100 0,160 0,12 0,08
0,160 0,200 0,25 0,19
0,200 0,315 0,35 0,25
0,315 0,400 0,70 0,55
0,400 0,500 1,10 0,80
0,500 0,630 1,60 1,20
0,630 0,710 2,20 1,70
0,710 0,800 2,80 2,10
a
For nominal conductor diameters up to and including 0,050 mm, the test method and requirements shall be
agreed between purchaser and supplier.

18.1.2 Bond strength of a twisted coil
18.1.2.1 Gener
...

IEC 60317-35 ®
Edition 2.0 2013-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –
Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a
bonding layer
Spécifications pour types particuliers de fils de bobinage –
Partie 35: Fil brasable de section circulaire en cuivre émaillé avec polyuréthane,
classe 155, avec une couche adhérente

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IEC 60317-35 ®
Edition 2.0 2013-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –

Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a

bonding layer
Spécifications pour types particuliers de fils de bobinage –

Partie 35: Fil brasable de section circulaire en cuivre émaillé avec polyuréthane,

classe 155, avec une couche adhérente

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 29.060.10 ISBN 978-2-8322-1144-1

– 2 – 60317-35 © IEC:2013
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 Test methods . 6
3.2.2 Winding wire . 6
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
10 Cut-through . 7
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to and
including 0,800 mm) . 7
12 Resistance to solvents . 8
13 Breakdown voltage . 8
14 Continuity of insulation . 8
15 Temperature index . 8
16 Resistance to refrigerants . 8
17 Solderability . 8
17.1 Nominal conductor diameters up to and including 0,100 mm. 8
17.2 Nominal conductor diameters over 0,100 mm . 9
18 Heat or solvent bonding . 9
18.1 Heat bonding . 9
18.1.1 Heat bonding strength of a helical coil . 9
18.1.2 Bond strength of a twisted coil . 10
18.2 Solvent bonding . 10
19 Dielectric dissipation factor . 11
20 Resistance to transformer oil . 11
21 Loss of mass . 11
23 Pin hole test . 11
30 Packaging . 11
Bibliography . 12

Table 1 – Resistance to abrasion . 8
Table 2 – Loads . 10

60317-35 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 35: Solderable polyurethane enamelled
round copper wire, class 155, with a bonding layer

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.
International Standard IEC 60317-35 has been prepared by IEC technical committee 55:
Winding wires.
This second edition cancels and replaces the first edition published in 1992,
Amendment 1:1997 and Amendment 2:1999. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– new 3.2.2 containing general notes on winding wire, formerly a part of the scope;
– revision to references to IEC 60317-0-1:2013 to clarify that their application is normative;
– modification to Clause 15 to remove specific wire specimen sizes;
– consolidation of 17.1 and 17.2 of the solderability requirements;

– 4 – 60317-35 © IEC:2013
– new Clause 23, Pin hole test.
The text of this standard is based on the following documents:
FDIS Report on voting
55/1416/FDIS 55/1437/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 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 standard is not continuous from Clauses 20 and 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 publication 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.
60317-35 © IEC:2013 – 5 –
INTRODUCTION
This part of IEC 60317 is one of a series which deals with insulated wires used for windings in
electrical equipment. The series has three groups describing:
1) Winding wires – Test methods (IEC 60851);
2) Specifications for particular types of winding wires (IEC 60317);
3) Packaging of winding wires (IEC 60264).

– 6 – 60317-35 © IEC:2013
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 35: Solderable polyurethane enamelled
round copper wire, class 155, with a bonding layer

1 Scope
This part of IEC 60317 specifies the requirements of solderable enamelled round copper
winding wire of class 155 with a dual coating. The underlying coating is based on poly-
urethane resin, which may be modified providing it retains the chemical identity of the original
resin and meets all specified wire requirements. The superimposed coating is a bonding layer
based on a thermoplastic resin.
NOTE 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.
The range of nominal conductor diameters covered by this standard is:
– Grade 1B: 0,020 mm up to and including 0,800 mm;
– Grade 2B: 0,020 mm up to and including 0,800 mm.
The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. 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
3 Terms, definitions, general notes and appearance
3.1 Terms and definitions
Subclause 3.1 of IEC 60317-0-1:2013 applies.
3.2 General notes
3.2.1 Test methods
Subclause 3.2.1 of IEC 60317-0-1:2013 applies. In case of inconsistencies between
IEC 60317-0-1:2013 and this part of IEC 60317, the latter shall prevail.
3.2.2 Winding wire
Class 155 is a thermal class that requires a minimum temperature index of 155 and a heat
shock temperature of at least 175 °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.

60317-35 © IEC:2013 – 7 –
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 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.
9 Heat shock
Clause 9 of IEC 60317-0-1:2013 applies. The minimum heat shock temperature shall be
175 °C.
10 Cut-through
No failure shall occur within 2 min at 200 °C.
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to
and including 0,800 mm)
The wire shall meet the requirements given in Table 1.
For intermediate nominal conductor diameters, the value of the next larger nominal conductor
diameter shall be taken.
– 8 – 60317-35 © IEC:2013
Table 1 – Resistance to abrasion
Grade 1B Grade 2B
Nominal conductor Minimum average Minimum force to Minimum average Minimum force to
diameter force to failure failure of each force to failure failure of each
measurement measurement
mm N N N N
0,250 2,30 1,95 4,10 3,50
0,280 2,50 2,10 4,40 3,70
0,315 2,70 2,30 4,75 4,00
0,355 2,90 2,50 5,10 4,30
0,400 3,15 2,70 5,45 4,60
0,450 3,40 2,90 5,80 4,90
0,500 3,65 3,10 6,20 5,25
0,560 3,90 3,30 6,65 5,60
0,630 4,20 3,55 7,10 6,00
0,710 4,50 3,80 7,60 6,45
0,800 4,80 4,10 8,10 6,90
12 Resistance to solvents
Test inappropriate.
13 Breakdown voltage
Clause 13 of IEC 60317-0-1:2013 applies. The elevated temperature shall be 155 °C.
14 Continuity of insulation
Clause 14 of IEC 60317-0-1:2013 applies.
15 Temperature index
Clause 15 of IEC 60317-0-1:2013 applies. The minimum temperature index shall be 155.
16 Resistance to refrigerants
Test inappropriate.
17 Solderability
17.1 Nominal conductor diameters up to and including 0,100 mm
The temperature of the solder bath shall be (390 ± 5) °C. The maximum immersion time shall
be 2 s.
60317-35 © IEC:2013 – 9 –
The surface of the tinned wire shall be smooth and free from holes and enamel residues.
17.2 Nominal conductor diameters over 0,100 mm
The temperature of the solder bath shall be (390 ± 5) °C. The maximum immersion time (in
seconds) shall be the following multiple of the nominal conductor diameter (in millimetres)
with a minimum of 2 s.
Grade 1B Grade 2B
12 s/mm 16 s/mm
The surface of the tinned wire shall be smooth and free from holes and enamel residues.
18 Heat or solvent bonding
18.1 Heat bonding
18.1.1 Heat bonding strength of a helical coil
18.1.1.1 At room temperature
The specimens shall be prepared according to the test method, and the temperature of the
oven for bonding shall be fixed as agreed between purchaser and supplier for the different
types of bonding enamels. The suggested temperature for polyamide bonding enamel
is (200 ± 2) °C and the suggested temperature for polyvinyl butyral bonding enamel is
(170 ± 2) °C.
Results: when testing the specimens according to the test method, under the action of load
specified in Table 2, no turns (other than possibly the first and the last) shall separate.
18.1.1.2 At elevated temperature
The specimens shall be prepared and shall be conditioned as described in the test method.
The elevated temperature shall be fixed as agreed between purchaser and supplier for the
different types of bonding enamels. The suggested temperature for polyamide bonding
enamel is (155 ± 2) °C and the suggested temperature for polyvinyl butyral bonding enamel is
(90 ± 2) °C.
Results: when testing the specimens according to the test method, under the action of load
specified in Table 2, no turns (other than possibly the first and the last) shall separate.

– 10 – 60317-35 © IEC:2013
Table 2 – Loads
Nominal conductor diameter Load
mm N
Over Up to Room Elevated
and including temperature temperature
a a
– 0,050
0,050 0,071 0,05 0,04
0,071 0,100 0,08 0,06
0,100 0,160 0,12 0,08
0,160 0,200 0,25 0,19
0,200 0,315 0,35 0,25
0,315 0,400 0,70 0,55
0,400 0,500 1,10 0,80
0,500 0,630 1,60 1,20
0,630 0,710 2,20 1,70
0,710 0,800 2,80 2,10
a
For nominal conductor diameters up to and including 0,050 mm, the test method and requirements shall be
agreed between purchaser and supplier.

18.1.2 Bond strength of a twisted coil
18.1.2.1 General
...

IEC 60317-35 ®
Edition 2.1 2019-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specifications for particular types of winding wires –
Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a
bonding layer
Spécifications pour types particuliers de fils de bobinage –
Partie 35: Fil brasable de section circulaire en cuivre émaillé avec polyuréthane,
classe 155, avec une couche adhérente

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IEC 60317-35 ®
Edition 2.1 2019-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specifications for particular types of winding wires –

Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a

bonding layer
Spécifications pour types particuliers de fils de bobinage –

Partie 35: Fil brasable de section circulaire en cuivre émaillé avec polyuréthane,

classe 155, avec une couche adhérente

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-7039-4

IEC 60317-35 ®
Edition 2.1 2019-06
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Specifications for particular types of winding wires –
Part 35: Solderable polyurethane enamelled round copper wire, class 155, with a
bonding layer
Spécifications pour types particuliers de fils de bobinage –
Partie 35: Fil brasable de section circulaire en cuivre émaillé avec polyuréthane,
classe 155, avec une couche adhérente

– 2 – IEC 60317-35:2013+AMD1:2019 CSV
© IEC 2019
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 Test methods . 6
3.2.2 Winding wire . 6
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
10 Cut-through . 7
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to and
including 0,800 mm) . 7
12 Resistance to solvents . 8
13 Breakdown voltage . 8
14 Continuity of insulation . 8
15 Temperature index . 8
16 Resistance to refrigerants . 8
17 Solderability . 8
17.1 General . 8
17.12 Nominal conductor diameters up to and including 0,100 mm. 9
17.23 Nominal conductor diameters over 0,100 mm . 9
18 Heat or solvent bonding . 9
18.1 Heat bonding . 9
18.1.1 Heat bonding strength of a helical coil . 9
18.1.2 Bond strength of a twisted coil . 10
18.2 Solvent bonding . 10
19 Dielectric dissipation factor . 11
20 Resistance to transformer oil . 11
21 Loss of mass . 11
23 Pin hole test . 11
30 Packaging . 11
Bibliography . 12

Table 1 – Resistance to abrasion . 8
Table 2 – Loads . 10

© IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –
Part 35: Solderable polyurethane enamelled
round copper wire, class 155, with a bonding layer
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 60317-35 edition 2.1 contains the second edition (2013-10) [documents 55/1416/FDIS and
55/1437/RVD] and its amendment 1 (2019-06) [documents 55/1691/CDV and 55/1741/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.
– 4 – IEC 60317-35:2013+AMD1:2019 CSV
© IEC 2019
International Standard IEC 60317-35 has been prepared by IEC technical committee 55:
Winding wires.
This second edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– new 3.2.2 containing general notes on winding wire, formerly a part of the scope;
– revision to references to IEC 60317-0-1:2013 to clarify that their application is normative;
– modification to Clause 15 to remove specific wire specimen sizes;
– consolidation of 17.1 and 17.2 of the solderability requirements;
– new Clause 23, Pin hole test.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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 standard is not continuous from Clauses 20 and 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 the base publication and its amendment 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 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 2019
INTRODUCTION
This part of IEC 60317 is one of a series which deals with insulated wires used for windings in
electrical equipment. The series has three groups describing:
1) Winding wires – Test methods (IEC 60851);
2) Specifications for particular types of winding wires (IEC 60317);
3) Packaging of winding wires (IEC 60264).

– 6 – IEC 60317-35:2013+AMD1:2019 CSV
© IEC 2019
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 35: Solderable polyurethane enamelled
round copper wire, class 155, with a bonding layer

1 Scope
This part of IEC 60317 specifies the requirements of solderable enamelled round copper
winding wire of class 155 with a dual coating. The underlying coating is based on poly-
urethane resin, which may be modified providing it retains the chemical identity of the original
resin and meets all specified wire requirements. The superimposed coating is a bonding layer
based on a thermoplastic resin.
NOTE 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.
The range of nominal conductor diameters covered by this standard is:
– Grade 1B: 0,020 mm up to and including 0,800 mm;
– Grade 2B: 0,020 mm up to and including 0,800 mm.
The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. 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
3 Terms, definitions, general notes and appearance
3.1 Terms and definitions
Subclause 3.1 of IEC 60317-0-1:2013 applies.
3.2 General notes
3.2.1 Test methods
Subclause 3.2.1 of IEC 60317-0-1:2013 applies. In case of inconsistencies between
IEC 60317-0-1:2013 and this part of IEC 60317, the latter shall prevail.
3.2.2 Winding wire
Class 155 is a thermal class that requires a minimum temperature index of 155 and a heat
shock temperature of at least 175 °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.

© IEC 2019
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 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.
9 Heat shock
Clause 9 of IEC 60317-0-1:2013 applies. The minimum heat shock temperature shall be
175 °C.
10 Cut-through
No failure shall occur within 2 min at 200 °C.
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to
and including 0,800 mm)
The wire shall meet the requirements given in Table 1.
For intermediate nominal conductor diameters, the value of the next larger nominal conductor
diameter shall be taken.
– 8 – IEC 60317-35:2013+AMD1:2019 CSV
© IEC 2019
Table 1 – Resistance to abrasion
Grade 1B Grade 2B
Nominal conductor Minimum average Minimum force to Minimum average Minimum force to
diameter force to failure failure of each force to failure failure of each
measurement measurement
mm N N N N
0,250 2,30 1,95 4,10 3,50
0,280 2,50 2,10 4,40 3,70
0,315 2,70 2,30 4,75 4,00
0,355 2,90 2,50 5,10 4,30
0,400 3,15 2,70 5,45 4,60
0,450 3,40 2,90 5,80 4,90
0,500 3,65 3,10 6,20 5,25
0,560 3,90 3,30 6,65 5,60
0,630 4,20 3,55 7,10 6,00
0,710 4,50 3,80 7,60 6,45
0,800 4,80 4,10 8,10 6,90
12 Resistance to solvents
Test inappropriate.
13 Breakdown voltage
Clause 13 of IEC 60317-0-1:2013 applies. The elevated temperature shall be 155 °C.
14 Continuity of insulation
Clause 14 of IEC 60317-0-1:2013 applies.
15 Temperature index
Clause 15 of IEC 60317-0-1:2013 applies. The minimum temperature index shall be 155.
16 Resistance to refrigerants
Test inappropriate.
17 Solderability
17.1 General
The temperature of the solder bath shall be (390 ± 5) °C. The surface of the tinned wire shall
be smooth and free from holes and enamel residues.

© IEC 2019
17.117.2 Nominal conductor diameters up to and including 0,100 mm
The temperature of the solder bath shall be (390 ± 5) °C. The maximum immersion time shall
be 2 s.
The surface of the tinned wire shall be smooth and free from holes and enamel residues.
17.217.3 Nominal conductor diameters over 0,100 mm
The temperature of the solder bath shall be (390 ± 5) °C. The maximum immersion time (in
seconds) shall be the following multiple of the nominal conductor diameter (in millimetres)
with a minimum of 2 s.
Grade 1B Grade 2B
12 s/mm 16 s/mm
The surface of the tinned wire shall be smooth and free from holes and enamel residues.
18 Heat or solvent bonding
18.1 Heat bonding
18.1.1 Heat bonding strength of a helical coil
18.1.1.1 At room temperature
The specimens shall be prepared according to the test method, and the temperature of the
oven for bonding shall be fixed as agreed between purchaser and supplier for the different
types of bonding enamels. The suggested temperature for polyamide bonding enamel
is (200 ± 2) °C and the suggested temperature for polyvinyl butyral bonding enamel is
(170 ± 2) °C.
Results: when testing the specimens according to the test method, under the action of load
specified in Table 2, no turns (other than possibly the first and the last) shall separate.
18.1.1.2 At elevated temperature
The specimens shall be prepared and shall be conditioned as described in the test method.
The elevated temperature shall be fixed as agreed between purchaser and supplier for the
different types of bonding enamels. The suggested temperature for polyamide bonding
enamel is (155 ± 2) °C and the suggested temperature for polyvinyl butyral bonding enamel is
(90 ± 2) °C.
Results: when testing the specimens according to the test method, under the action of load
specified in Table 2, no turns (other than possibly the first and the last) shall separate.

– 10 – IEC 60317-35:2013+AMD1:2019 CSV
© IEC 2019
Table 2 – Loads
Nominal conductor diameter Load
mm N
Over Up to Room Elevated
and including temperature temperature
a a
– 0,050
0,050 0,071 0,05 0,04
0,071 0,100 0,08 0,06
0,100 0,160 0,12 0,08
0,160 0,200 0,25 0,19
0,200 0,315 0,35 0,25
0,315 0,400 0,70 0,55
0,400 0,500 1,10 0,80
0,500 0,630 1,60 1,20
0,630 0,710 2,20 1,70
0,710 0,800 2,80 2,10
a
For nominal conductor diameters up to and including 0,050 mm, the test method and requirements shall be
agreed between purchaser and supplier.

18.1.2 Bond strength of a twisted coil
18.1.2.1 General
This test shall be considered only as a special test and is applicable to the diameter
0,315 mm.
18.1.2.2 At room temperature
When preparing a test specimen of diameter 0,315 mm according to the test method, the time
shall be 30 s and the current shall be fixed as agreed between purchaser and supplier. The
suggested value for polyamide or polyvinyl butyral bonding enamel is (2,7 ± 0,1) A.
Results: when testing the specimens according to the test method, under the action of the
deflection force of 100 N, the specimen shall not break.
18.1.2.3 At elevated temperature
The specimens of diameter 0,315 mm shall be prepared according to the test method using
the parameters listed in 18.1.2.2 and shall then be conditioned as described in the test
method.
The elevated temperature shall be fixed as agreed between purchaser and supplier. The
suggested temperature for polyamide bonding enamel is (155 ± 2) °C and the suggested
temperature for polyvinyl butyral bonding enamel is (90 ± 2) °C.
Results: when testing the specimens according to the test method, under the action of the
deflection force of 10 N, the specimen shall not break.
18.2 Solvent bonding
Test required but not yet under consideration.

© IEC 2019
19 Dielectric dissipation factor
Test inappropriate.
20 Resistance to transformer oil
Test inappropriate.
21 Loss of mass
Test inappropriate.
23 Pin hole test
Clause 23 of IEC 60317-0-1:2013 applies.
30 Packaging
Clause 30 of IEC 60317-0-1:2013 applies.

– 12 – IEC 60317-35:2013+AMD1:2019 CSV
© IEC 2019
Bibliography
IEC 60264 (all parts), Packaging of winding wires
IEC 60317 (all parts), Specifications for particular types of winding wires
IEC 60851 (all parts), Winding wires – Test methods

_____________
– 14 – IEC 60317-35:2013+AMD1:2019 CSV
© IEC 2019
SOMMAIRE
AVANT-PROPOS . 15
INTRODUCTION . 17
1 Domaine d'application . 18
2 Références normatives . 18
3 Termes, définitions, notes générales et aspect . 18
3.1 Termes et définitions . 18
3.2 Notes générales . 18
3.2.1 Méthodes d'essai . 18
3.2.2 Fil de bobinage . 18
3.3 Aspect . 19
4 Dimensions. 19
5 Résistance électrique . 19
6 Allongement . 19
7 Effet de ressort . 19
8 Souplesse et adhérence . 19
9 Choc thermique . 19
10 Thermoplasticité . 19
11 Résistance à l'abrasion (diamètres nominaux des conducteurs de 0,250 mm
jusques et y compris 0,800 mm) . 19
12 Résistance aux solvants . 20
13 Tension de claquage . 20
14 Continuité de l'isolant . 20
15 Indice de température . 20
16 Résistance aux réfrigérants . 20
17 Brasabilité . 21
17.1 Généralités . 21
17.12 Diamètres nominaux des conducteurs jusques et y compris 0,100 mm . 21
17.23 Diamètres nominaux des conducteurs supérieurs à 0,100 mm . 21
18 Adhérence par chaleur ou par solvant. 21
18.1 Adhérence par chaleur . 21
18.1.1 Force d'adhérence par chaleur d'un bobinage hélicoïdal . 21
18.1.2 Force de collage d'un bobinage torsadé . 22
18.2 Adhérence par solvant . 23
19 Facteur de dissipation diélectrique . 23
20 Résistance à l'huile de transformateur . 23
21 Perte de masse . 23
23 Détection des microfissures en immersion . 23
30 Conditionnement . 23
Bibliographie . 24

Tableau 1 – Résistance à l'abrasion . 20
Tableau 2 – Charges . 22

© IEC 2019
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
SPÉCIFICATIONS POUR TYPES PARTICULIERS DE FILS DE BOBINAGE –
Partie 35: Fil brasable de section circulaire en cuivre émaillé
avec polyuréthane, classe 155, avec une couche adhérente
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (IEC) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l’IEC). L’IEC a pour
objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines
de l'électricité et de l'électronique. A cet effet, l’IEC – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de l’IEC"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec l’IEC, participent
également aux travaux. L’IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l’IEC concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l’IEC
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de l’IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l’IEC. Tous les efforts raisonnables sont entrepris afin que l’IEC
s'assure de l'exactitude du contenu technique de ses publications; l’IEC ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de l’IEC s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de l’IEC dans leurs publications nationales
et régionales. Toutes divergences entre toutes Publications de l’IEC et toutes publications nationales ou
régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) L’IEC elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de l’IEC. L’IEC n'est responsable d'aucun des services effectués par les organismes de certification
indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à l’IEC, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de l’IEC, pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre
dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais
de justice) et les dépenses découlant de la publication ou de l'utilisation de cette Publication de l’IEC ou de
toute autre Publication de l’IEC, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de l’IEC peuvent faire
l’objet de droits de brevet. L’IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits
de brevets et de ne pas avoir signalé leur existence.
Cette version consolidée de la Norme IEC officielle et de son amendement a été
préparée pour la commodité de l'utilisateur.
L'IEC 60317-35 édition 2.1 contient la deuxième édition (2013-10) [documents 55/1416/
FDIS et 55/1437/RVD] et son amendement 1 (2019-06) [documents 55/1691/CDV et
55/1741/RVC].
Dans cette version Redline, une ligne verticale dans la marge indique où le contenu
technique est modifié par l'amendement 1. Les ajouts sont en vert, les suppressions
sont en rouge, barrées. Une version Finale avec toutes les modifications acceptées
est disponible dans cette publication.

– 16 – IEC 60317-35:2013+AMD1:2019 CSV
© IEC 2019
La Norme internationale IEC 60317-35 a été établie par le comité d’études 55 de l'IEC: Fils de
bobinage.
Cette deuxième édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition
précédente:
– un nouveau 3.2.2 contenant des notes générales sur le fil de bobinage intégrées
auparavant au domaine d'application;
– la révision des références à l'IEC 60317-0-1:2013 pour bien établir que leur application est
normative;
– une modification de l’Article 15 pour retirer les tailles d’éprouvettes de fils spécifiques;
– la consolidation de 17.1 et 17.2 des exigences relatives à la brasabilité;
– un nouvel Article 23, Détection des microfissures en immersion.
Cette publication a été rédigée selon les Directives ISO/IEC, Partie 2.
Une liste de toutes les parties de la série IEC 60317, publiées sous le titre général
Spécifications pour types particuliers de fils de bobinage, peut être consultée sur le site web
de l'IEC.
La numérotation des articles dans la présente norme n'est pas continue entre les Articles 20
et 30 afin de permettre l'introduction d'éventuelles futures exigences pour les fils avant celles
concernant le conditionnement des fils.
Le comité a décidé que le contenu de la publication de base et de son amendement ne sera
pas modifié avant la date de stabilité indiquée sur le site web de l’IEC sous
"http://webstore.iec.ch" dans les données relatives à la publication recherchée. A cette date,
la publication sera
• reconduite,
• supprimée,
• remplacée par une édition révisée, ou
• amendée.
IMPORTANT – Le logo "colour inside" qui se trouve sur la page de couverture de cette
publication indique qu'elle contient des couleurs qui sont considérées comme utiles à
une bonne compréhension de son contenu. Les utilisateurs devraient, par conséquent,
imprimer cette publication en utilisant une imprimante couleur.

© IEC 2019
INTRODUCTION
La présente partie de l'IEC 60317 constitue l'un des éléments d'une série traitant des fils
isolés utilisés dans les enroulements des appareils électriques. Cette série est composée de
trois groupes définissant respectivement:
1) Fils de bobinage – Méthodes d'essai (IEC 60851);
2) Spécifications pour types particuliers de fils de bobinage (IEC 60317);
3) Conditionnement des fils de bobinage (IEC 60264).

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© IEC 2019
SPÉCIFICATIONS POUR TYPES PARTICULIERS DE FILS DE BOBINAGE –

Partie 35: Fil brasable de section circulaire en cuivre émaillé
avec polyuréthane, classe 155, avec une couche adhérente

1 Domaine d'application
La présente partie de l'IEC 60317 spécifie les exigences pour les fils de bobinage brasables
de section circulaire en cuivre émaillé de classe 155 avec un double revêtement. La sous-
couche est à base de résine polyuréthanne, qui peut être modifiée sous réserve de conserver
l'identité chimique de la résine initiale et de répondre à toutes les exigences spécifiées pour
le fil. La surcouche est une couche adhérente à base de résine thermoplastique.
NOTE Une résine modifiée est une résine qui a subi une modification chimique, ou qui contient un ou plusieurs
additifs pour améliorer les résultats obtenus ou les caractéristiques d'utilisation.
La gamme des diamètres nominaux des conducteurs couverte par la présente norme est:
– Grade 1B: 0,020 mm jusqu'à 0,800 mm compris;
– Grade 2B: 0,020 mm jusqu'à 0,800 mm compris.
Les diamètres nominaux des conducteurs sont spécifiés dans l'Article 4 de l'IEC 60317-0-1.
2 Références normatives
Les documents suivants sont cités en référence de manière normative, en intégralité ou en
partie, dans le présent document et sont indispensables pour son application. Pour les
références datées, seule l’édition citée s’applique. Pour les références non datées, la
dernière édition du document de référence s’applique (y compris les éventuels
amendements).
IEC 60317-0-1:2013, Spécifications pour types particuliers de fils de bobinage – Partie 0-1:
Exigences générales – Fil de section circulaire en cuivre émaillé
3 Termes, définitions, notes générales et aspect
3.1 Termes et définitions
Le Paragraphe 3.1 de l'IEC 60317-0-1:2013 s’applique.
3.2 Notes générales
3.2.1 Méthodes d'essai
Le Paragraphe 3.2.1 de l'IEC 60317-0-1:2013 s’applique. En cas de divergences entre
l'IEC 60317-0-1:2013 et la présente partie de l'IEC 60317, cette dernière doit prévaloir.
3.2.2 Fil de bobinage
La classe 155 est une classe thermique qui exige un indice de température minimal de 155 et
une température de choc thermique d'au moins 175 °C.

© IEC 2019
La température en degrés Celsius correspondant à l'indice de température n'est pas
nécessairement celle à laquelle il est recommandé d'utiliser le fil et cela dépendra de
nombreux facteurs, y compris du type d'équipement considéré.
3.3 Aspect
Le Paragraphe 3.3 de l'IEC 60317-0-1:2013 s’applique.
4 Dimensions
L’Article 4 de l'IEC 60317-0-1:2013 s’applique.
5 Résistance électrique
L’Article 5 de l'IEC 60317-0-1:2013 s’applique.
6 Allongement
L’Article 6 de l'IEC 60317-0-1:2013 s’applique.
7 Effet de ressort
L’Article 7 de l'IEC 60317-0-1:2013 s’applique.
8 Souplesse et adhérence
L’Article 8 de l'IEC 60317-0-1:2013 s’applique.
9 Choc thermique
L’Article 9 de l'IEC 60317-0-1:2013 s’applique. La température minimale de choc thermique
doit être de 175 °C.
10 Thermoplasticité
Aucune défaillance ne doit se produire pendant 2 min à une température de 200 °C.
11 Résistance à l'abrasion (diamètres nominaux des conducteurs de 0,250 mm
jusques et y compris 0,800 mm)
Le fil doit satisfaire aux exigences du Tableau 1.
Pour les diamètres nominaux intermédiaires des conducteurs, la valeur donnée pour le
diamètre nominal du conducteur immédiatement supérieur doit être utilisée.

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© IEC 2019
Tableau 1 – Résistance à l'abrasion
Grade 1B Grade 2B
Diamètre nominal Charge Charge Charge Charge
du conducteur minimale minimale minimale minimale
moyenne de rupture moyenne de rupture
de rupture de chaque mesure de rupture de chaque mesure
mm N N N N
0,250 2,30 1,95 4,10 3,50
0,280 2,50 2,10 4,40 3,70
0,315 2,70 2,30 4,75 4,00
0,355 2,90 2,50 5,10 4,30
0,400 3,15 2,70 5,45 4,60
0,450 3,40 2,90 5,80 4,90
0,500 3,65 3,10 6,20 5,25
0,560 3,90 3,30 6,65 5,60
0,630 4,20 3,55 7,10 6,00
0,710 4,50 3,80 7,60 6,45
0,800 4,80 4,10 8,10 6,90
12 Résistance aux solvants
L'essai ne s’applique pas.
13 Tension de claquage
L’Article 13 de l'IEC 60317-0-1:2013 s’applique. La température élevée doit être égale à
155 °C.
14 Continuité de l'isolant
L’Article 14 de l'IEC 60317-0-1:2013 s’applique.
15 Indice de température
L’Article 15 de l'IEC 60317-0-1:2013 s’applique. L'indice de température minimal doit être de
155.
16 Résistance aux réfrigérants
L'essai ne s’applique pas.
--
...