IEC 60317-3:2004+AMD1:2010 CSV

Specifications for particular types of winding wires - Part 3: Polyester enamelled round copper wire, class 155

IEC 60317-3:2004+A1:2010 Specifies the requirements of enamelled round copper winding wire of class 155 with a sole coating based on polyester resin, which may be modified provided it retains the chemical identity of the original resin and meets all specified wire requirements. 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. The range of nominal conductor diameters covered by this standard is as follows:
- grade 1: 0,020 mm up to and including 3,150 mm;
- grade 2: 0,020 mm up to and including 5,000 mm.
The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1. The main changes with respect to the previous edition are listed below:
- new requirements for appearance, Subclause 3.2, added;
- the constant K, applied in calculating the number of revolutions for the peel test, Clause 8, increased from 130 mm to 150 mm;
- the test temperature for the cut-through test, Clause 10, increased from 240 °C to 270 °C;
- new pin hole test, Clause 23, added.
This publication is to be read in conjunction with  IEC 60317-0-1:2008.
This consolidated version consists of the third edition (2004) and its amendment 1 (2010). Therefore, no need to order amendment in addition to this publication.

Spécifications pour types particuliers de fils de bobinage - Partie 3: Fil de section circulaire en cuivre émaillé avec polyester, classe 155

La CEI 60317-3:2004+A1:2010 Spécifie les exigences concernant les fils de bobinage de section circulaire en cuivre émaillé de classe 155 avec un revêtement unique à base de résine polyester qui peut être modifiée pour autant que cette résine conserve l'identité chimique de la résine initiale et réponde à toutes les exigences du fil. 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. 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; cela dépendra de beaucoup de facteurs, y compris du type d'équipement considéré. La gamme des diamètres nominaux des conducteurs couverte par la présente norme est la suivante:
- grade 1: 0,020 mm jusque et y compris 3,150 mm;
- grade 2: 0,020 mm jusque et y compris 5,000 mm.
Les diamètres nominaux des conducteurs sont spécifiés dans l'Article 4 de la CEI 60317-0-1. Les modifications principales par rapport à l'édition précédente sont les suivantes:
- ajout de nouvelles exigences pour les aspects, voir paragraphe 3.2;
- la constante K, appliquée en calculant le nombre de tours pour l'essai de décollement (Article 8), augmentée de 130 mm à 150 mm;
- la température d'essai pour l'essai de thermoplasticité (Article 10), augmentée de 240 °C 270 °C;
- nouvel essai de détection des micro-fissures en immersion, Article 23, ajouté.
Cette publication doit être lue conjointement avec la  CEI 60317-0-1:2008.
  Cette version consolidée comprend la troisième édition (2004) et son amendement 1 (2010). Il n'est donc pas nécessaire de commander l'amendement avec cette publication.

General Information

• Status: Published
• Publication Date: 03-Jan-2022
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.060.10 - Wires
• Technical Committee: TC 55 - Winding wires
• Current Stage: WPUB - Publication withdrawn
• Completion Date: 04-Jan-2022

Overview

IEC 60317-3:2004+AMD1:2010 CSV is an international standard published by the International Electrotechnical Commission (IEC) that specifies the requirements for particular types of winding wires. This part focuses on polyester enamelled round copper wire, class 155, designed mainly for electrical equipment windings. The wire features a single coating of polyester resin, which may be chemically modified but must retain the original resin's identity and fulfill all technical requirements.

Class 155 defines the thermal capabilities of the wire, ensuring a minimum temperature index of 155 °C and a heat shock temperature of at least 175 °C. These parameters do not indicate the recommended operating temperature but provide guidance depending on application conditions.

The standard covers two grades of nominal conductor diameters:

• Grade 1: from 0.020 mm up to and including 3.150 mm
• Grade 2: from 0.020 mm up to and including 5.000 mm

This consolidated version includes the third edition (2004) and amendment 1 (2010), providing updated test procedures and quality requirements.

Key Topics

• Material Specifications
  The enamelled wire uses polyester resin coatings which can be modified chemically but still meet the strict criteria defined for physical and electrical properties.

• Thermal Class 155
  Ensures the wire withstands high temperatures up to 155 °C continuously and can tolerate heat shock conditions of at least 175 °C without insulation failure.

• Dimensional Requirements
  Defines conductor diameters and tolerances in accordance with IEC 60317-0-1, facilitating compatibility and interchangeability.

• Mechanical and Electrical Properties
  Includes tests for:

  • Electrical resistance
  • Elongation and springiness
  • Flexibility and adherence with an updated peel test constant (K = 150 mm)
  • Heat shock and cut-through tests conducted at elevated temperatures up to 270 °C
  • Resistance to abrasion, solvent exposure, and breakdown voltage at 155 °C ambient
  • Continuity of insulation to prevent electrical faults

• New Testing Requirements
  Amendment 1 introduced a pin hole test for enhanced quality control, as well as more stringent appearance requirements.

• Packaging and Handling
  Outlines standards for packaging to preserve wire quality during transportation and storage.

Applications

IEC 60317-3 polyester enamelled round copper wires are essential components in the construction of electrical devices such as:

• Motors and generators requiring insulation that withstands thermal stress
• Transformers and inductors operating at elevated temperatures
• Electrical coils used in industrial equipment and household appliances
• Other electromechanical devices where high temperature performance and mechanical robustness of winding wire are critical

Using polyester enamelled wire meeting this standard ensures reliable insulation, optimal performance across thermal conditions, and durability, which leads to increased lifespan and safety of electrical devices.

Related Standards

• IEC 60317-0-1:2008 – General requirements for enamelled round copper wires, providing foundational specifications referenced throughout IEC 60317-3.
• IEC 60851 – Test methods for winding wires, complementing IEC 60317 series with standardized testing procedures.
• IEC 60264 – Packaging requirements for winding wires to maintain quality from manufacture to installation.

Understanding and adhering to the IEC 60317 series and related standards is critical for manufacturers, engineers, and quality professionals involved in producing and using electrical winding wires to ensure internationally recognized safety, reliability, and performance.

Standards Content (Sample)

IEC 60317-3 ®
Edition 3.1 2011-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specifications for particular types of winding wires –
Part 3: Polyester enamelled round copper wire, class 155

Spécifications pour types particuliers de fils de bobinage –
Partie 3: Fil de section circulaire en cuivre émaillé avec polyester, classe 155

IEC 60317-3:2004+A1:2010
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IEC 60317-3 ®
Edition 3.1 2011-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specifications for particular types of winding wires –
Part 3: Polyester enamelled round copper wire, class 155

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX CC
ICS 29.060.10 ISBN 978-2-88912-000-0

– 2 – 60317-3  IEC:2004+A1:2010
CONTENTS
FOREWORD . 3
INTRODUCTION . 5

1 Scope . 6
2 Normative references . 6
3 Definitions and general notes on methods of test and appearance . 6
3.1 Definitions and general notes on methods of test . 6
3.2 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 2,500 mm) . 7
12 Resistance to solvents . 8
13 Breakdown voltage . 8
14 Continuity of insulation . 8
15 Temperature index . 8
16 Resistance to refrigerants . 9
17 Solderability . 9
18 Heat or solvent bonding . 9
19 Dielectric dissipation factor . 9
20 Resistance to transformer oil . 9
23 Pin hole test . 9
30 Packaging . 9

Table 1 – Resistance to abrasion . 8

60317-3  IEC:2004+A1:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES
OF WINDING WIRES –
Part 3: Polyester enamelled round copper wire,
class 155
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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This consolidated version of IEC 60317-3 consists of the third edition (2004)
[documents 55/911/FDIS and 55/917/RVD] and its amendment 1 (2010) [documents
55/1117/CDV and 55/1152/RVC]. It bears the edition number 3.1.
The technical content is therefore identical to the base edition and its amendment and
has been prepared for user convenience. A vertical line in the margin shows where the
base publication has been modified by amendment 1. Additions and deletions are
displayed in red, with deletions being struck through.

– 4 – 60317-3  IEC:2004+A1:2010
International Standard IEC 60317-3 has been prepared by IEC technical committee 55:
Winding wires.
The main changes with respect to the previous edition are listed below:
– new requirements for appearance, Subclause 3.2, added;
– the constant K, applied in calculating the number of revolutions for the peel test, Clause 8,
increased from 130 mm to 150 mm;
– the test temperature for the cut-through test, Clause 10, increased from 240 °C to 270 °C;
– new pin hole test, Clause 23, added.
This International Standard is to be read in conjunction with IEC 60317-0-1.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.

60317-3  IEC:2004+A1:2010 – 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 – 60317-3  IEC:2004+A1:2010
SPECIFICATIONS FOR PARTICULAR TYPES
OF WINDING WIRES –
Part 3: Polyester enamelled round copper wire,
class 155
1 Scope
This part of IEC 60317 specifies the requirements of enamelled round copper winding wire of
class 155 with a sole coating based on polyester resin, which may be modified provided it
retains the chemical identity of the original resin and meets all specified wire requirements.
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.
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.
The range of nominal conductor diameters covered by this standard is as follows:
– grade 1: 0,020 mm up to and including 3,150 mm;
– grade 2: 0,020 mm up to and including 5,000 mm.
The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60317-0-1:2008, Specifications for particular types of winding wires – Part 0-1: General
requirements – Enamelled round copper wire
3 Definitions and general notes on methods of test and appearance
3.1 Definitions and general notes on methods of test
For definitions and general notes on methods of test, see Clause 3 Subclauses 3.1 and 3.2 of
IEC 60317-0-1.
In case of inconsistencies between IEC 60317-0-1 and this standard, IEC 60317-3 shall
prevail.
60317-3  IEC:2004+A1:2010 – 7 –
3.2 Appearance
See Clause 3 Subclause 3.3 of IEC 60317-0-1.
4 Dimensions
See Clause 4 of IEC 60317-0-1.
5 Electrical resistance
See Clause 5 of IEC 60317-0-1.
6 Elongation
See Clause 6 of IEC 60317-0-1.
7 Springiness
See Clause 7 of IEC 60317-0-1.
8 Flexibility and adherence
See Clause 8 of IEC 60317-0-1, where the constant K used for the calculation of the number
of revolutions for the peel test shall be 150 mm.
9 Heat shock
See Clause 9 of IEC 60317-0-1, where the minimum heat shock temperature shall be 175 °C.
10 Cut-through
No failure shall occur within 2 min at a temperature of 270 °C.
11 Resistance to abrasion
(nominal conductor diameters from 0,250 mm up to and including 2,500 mm)
The wire shall meet the requirements given in Table
...