IEC 60317-1:2010

Specifications for particular types of winding wires - Part 1: Polyvinyl acetal enamelled round copper wire, class 105

IEC 60317-1:2010 specifies the general requirements of enamelled round copper winding wires of class 105 with a sole coating based on polyvinyl acetal resin, which may be modified providing it retains the chemical identity of the original resin and meets all specified wire requirements. The main changes with respect to the previous edition are:
- new requirements for appearance;
- deletion of high temperature failure requirements;
- new pin hole test requirement.

Spécifications pour types particuliers de fils de bobinage - Partie 1: Fil de section circulaire en cuivre émaillé avec acétal de polyvinyle, classe 105

La CEI 60317-1:2010 concerne les fils de bobinage de section circulaire en cuivre émaillé de classe 105 avec un revêtement unique à base de résine acétal de polyvinyle qui peut être modifiée à condition qu'elle conserve l'identité chimique de la résine initiale et réponde à toutes les exigences du fil. Les modifications principales par rapport à l'édition précédente sont:
- nouvelles exigences concernant l'aspect;
- suppresion exigences conernant la défaillance à haute température;
- nouvelles exigences concernant la détection des microfissures en immersion.

General Information

• Status: Published
• Publication Date: 17-Jun-2024
• ICS: 29.060.10 - Wires
• Technical Committee: TC 55 - Winding wires
• Drafting Committee: WG 1 - TC 55/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 10-Mar-2010
• Completion Date: 31-Mar-2010

Relations

• Amended By: IEC 60317-1:2010/AMD1:2024 - Amendment 1 - Specifications for particular types of winding wires - Part 1: Polyvinyl acetal enamelled round copper wire, class 105
• Effective Date: 05-Sep-2023
• Revises: IEC 60317-1:1990/AMD2:1997 - Amendment 2 - Specifications for particular types of winding wires. Part 1: Polyvinyl acetal enamelled round copper wire, class 105
• Effective Date: 05-Sep-2023
• Revises: IEC 60317-1:1990 - Specifications for particular types of winding wires. Part 1: Polyvinyl acetal enamelled round copper wire, class 105
• Effective Date: 05-Sep-2023

Overview

IEC 60317-1:2010 (amended 2024) specifies requirements for polyvinyl acetal enamelled round copper winding wire, class 105. It defines material identity, dimensional limits, electrical and mechanical performance, and test methods for enamelled round copper wires with a sole coating based on polyvinyl acetal resin (modifications allowed if the resin’s chemical identity is retained). The standard is part of the IEC 60317 series covering particular types of winding wires and has a consolidated edition (4.1) incorporating Amendment 1 (2024).

Key updates vs. the previous edition:

• New requirements for appearance
• Deletion of high temperature failure requirements
• Introduction of a pin hole test

Key topics and requirements

The standard covers a comprehensive set of technical topics and test criteria, including:

• Thermal class: Class 105 - minimum temperature index of 105; heat shock temperature at least 155 °C.
• Scope of conductor sizes:
  • Grade 1: 0.040 mm to 2.500 mm
  • Grade 2: 0.040 mm to 5.000 mm
  • Grade 3: 0.080 mm to 5.000 mm
• Mechanical and electrical properties: dimensions, electrical resistance, elongation, springiness.
• Adhesion and flexibility: peel test with specified constant (K = 175 mm).
• Heat shock: no coating cracks at mandated mandrel diameters and elongations.
• Cut-through resistance: no failure within 2 minutes at 170 °C.
• Resistance to abrasion: tabulated minimum force-to-failure values by nominal diameter (Grades 1–3).
• Other tests: resistance to solvents, breakdown voltage, continuity of insulation, temperature index verification, resistance to refrigerants, solderability, heat/solvent bonding, dielectric dissipation, resistance to transformer oil, loss of mass, pin hole test, and packaging requirements.

Applications and users

This standard is used where reliable insulated copper winding wire is required:

• Manufacturers of motors, transformers, coils, inductors and other electromagnetic devices
• Winding wire producers setting product specifications and quality control
• Test laboratories performing conformity and type testing
• Design engineers specifying enamelled round copper wire (polyvinyl acetal) for class 105 thermal performance
• Procurement/specifications teams and certification bodies assessing compliance

IEC 60317-1 helps ensure consistent material performance (heat shock, abrasion, insulation continuity) for winding wire applications where class 105 thermal behavior and polyvinyl acetal enamel properties are specified.

Related standards

• IEC 60317-0-1 - General requirements for enamelled round copper wire
• IEC 60851 - Winding wires and methods of test
• IEC 60264 - Packaging of winding wires

Keywords: IEC 60317-1, polyvinyl acetal enamelled round copper wire, class 105, winding wire, heat shock, pin hole test, resistance to abrasion.

Standards Content (Sample)

IEC 60317-1 ®
Edition 4.1 2024-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Specifications for particular types of winding wires –
Part 1: Polyvinyl acetal enamelled round copper wire, class 105

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IEC 60317-1 ®
Edition 4.1 2024-06
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
colour
inside
Specifications for particular types of winding wires –
Part 1: Polyvinyl acetal enamelled round copper wire, class 105
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.10 ISBN 978-2-8322-9231-0
REDLINE VERSION – 2 – IEC 60317-1:2010+AMD1:2024 CSV
© IEC 2024
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and general notes on methods of test and appearance . 6
3.1 Terms and definitions . 6
3.2 General notes on methods of test . 7
3.2.1 Methods of test . 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
9.1 Nominal conductor diameters up to and including 1,600 mm . 7
9.2 Nominal conductor diameters over 1,600 mm . 8
10 Cut-through . 8
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to and
including 2,500 mm) . 8
12 Resistance to solvents . 9
13 Breakdown voltage . 9
14 Continuity of insulation . 9
15 Temperature index . 9
16 Resistance to refrigerants . 10
17 Solderability . 10
18 Heat and solvent bonding . 10
19 Dielectric dissipation factor . 10
20 Resistance to transformer oil . 10
21 Loss of mass . 10
23 Pin hole test . 10
30 Packaging . 10

Table 1 – Heat shock . 8
Table 2 – Resistance to abrasion . 9

© IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 1: Polyvinyl acetal enamelled round copper wire, class 105

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
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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represent the latest information, which may be obtained from the patent database available at
https://patents.iec.ch. 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 60317-1 edition 4.1 contains the fourth edition (2010-03) [documents 55/1176/FDIS
and 55/1187/RVD] and its amendment 1 (2024-06) [documents 55/1979/CDV and
55/2015/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.
International Standard IEC 60317-1 has been prepared by IEC technical committee 55:
Winding wires.
REDLINE VERSION – 4 – IEC 60317-1:2010+AMD1:2024 CSV
© IEC 2024
This fourth edition of IEC 60317-1 cancels and replaces the third edition published in 1990, its
Amendment 1 (1997) and Amendment 2 (1997). This edition constitutes a technical revision.
The main changes with respect to the previous edition are as follows:
– new requirements for appearance;
– deletion of high temperature failure requirements;
– new pin hole test requirements.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This International Standard is to be read in conjunction with IEC 60317-0-1 (2008):2013 and
its Amendment 1:2019 .
A list of all the parts in the IEC 60317 series, under the general title Specifications for
particular types of winding wires, can be found on the IEC website.
The committee has decided that the contents of this document and its amendment 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.
© 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 and methods of test (IEC 60851) ;
2) specifications for particular types of winding wires (IEC 60317);
3) packaging of winding wires (IEC 60264).

REDLINE VERSION – 6 – IEC 60317-1:2010+AMD1:2024 CSV
© IEC 2024
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 1: Polyvinyl acetal enamelled round copper wire, class 105

1 Scope
This Part of IEC 60317 specifies the general requirements of enamelled round copper winding
wires of class 105 with a sole coating based on polyvinyl acetal resin, which may be modified
providing 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 105 is a thermal class that requires a minimum temperature index of 105 and a heat
shock temperature of at least 155 °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: 0,040 mm up to and including 2,500 mm;
– Grade 2: 0,040 mm up to and including 5,000 mm;
– Grade 3: 0,080 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 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 :20082013, 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 and general notes on methods of test and appearance
3.1 Terms and definitions
For terms and definitions, see 3.1 of IEC 60317-0-1. In case of inconsistencies between
IEC 60317-0-1 and this standard, IEC 60317-1 shall prevail.
—————————
There exists a consolidated edition 4.1:2021 that includes IEC 60317-0-1:2013 and its Amendment 1:2019.

© IEC 2024
3.2 General notes on methods of test
3.2.1 Methods of test
For general notes on methods of test, see 3.2 of IEC 60317-0-1.
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 and this standard, IEC 60317-1 shall
prevail.
3.2.2 Winding wire
Subclause 3.2.2 of IEC 60317-0-1:2013 applies.
3.3 Appearance
See 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.
Clause 5 of IEC 60317-0-1:2013 and IEC 60317-0-1:2013/AMD1:2019 applies.
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 175 mm.
9 Heat shock
The minimum heat shock temperature shall be 155 °C.
9.1 Nominal conductor diameters up to and including 1,600 mm
The coating shall show no crack. The mandrel diameter shall be as specified in Table 1.

REDLINE VERSION – 8 – IEC 60317-1:2010+AMD1:2024 CSV
© IEC 2024
Table 1 – Heat shock
Nominal conductor diameter Elongation
before
mm
Mandrel
winding
b
diameter
on mandrel
Up to and
Over
including
%
a
– 0,050 0,150 mm
0,050 1,600 – D
a
Or to the breaking point of the copper, whichever is less.
b
D is the overall diameter of the wire.

9.2 Nominal conductor diameters over 1,600 mm
See 9.2 of IEC 60317-0-1.
10 Cut-through
No failure shall occur within 2 min at 170 °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 2.

© IEC 2024
Table 2 – Resistance to abrasion
Grade 1 Grade 2 Grade 3
Minimum Minimum Minimum Minimum Minimum Minimum
Nominal
average force to average force to average force to
conductor
force to failure of force to failure of force to failure of
diameter
failure each failure each failure each
mm
measurement measurement measurement
N N N N N N
0,250 3,00 2,55 4,90 4,15 5,80 4,90
0,280 3,25
...

IEC 60317-1 ®
Edition 4.0 2010-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –
Part 1: Polyvinyl acetal enamelled round copper wire, class 105

Spécifications pour types particuliers de fils de bobinage –
Partie 1: Fil de section circulaire en cuivre émaillé avec acétal de polyvinyle,
classe 105
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IEC 60317-1 ®
Edition 4.0 2010-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –
Part 1: Polyvinyl acetal enamelled round copper wire, class 105

Spécifications pour types particuliers de fils de bobinage –
Partie 1: Fil de section circulaire en cuivre émaillé avec acétal de polyvinyle,
classe 105
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
J
CODE PRIX
ICS 29.060.10 ISBN 978-2-88910-103-0
– 2 – 60317-1 © IEC:2010
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Terms, definitions and general notes on methods of test and appearance .6
3.1 Terms and definitions .6
3.2 General notes on methods of test.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
9.1 Nominal conductor diameters up to and including 1,600 mm .7
9.2 Nominal conductor diameters over 1,600 mm .7
10 Cut-through .8
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to and
including 2,500 mm) .8
12 Resistance to solvents.8
13 Breakdown voltage .9
14 Continuity of insulation .9
15 Temperature index .9
16 Resistance to refrigerants.9
17 Solderability .9
18 Heat and solvent bonding .9
19 Dielectric dissipation factor.9
20 Resistance to transformer oil .9
21 Loss of mass .9
23 Pin hole test .9
30 Packaging .9

Table 1 – Heat shock .7
Table 2 – Resistance to abrasion.8

60317-1 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES
OF WINDING WIRES –
Part 1: Polyvinyl acetal enamelled
round copper wire, class 105
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 60317-1 has been prepared by IEC technical committee 55:
Winding wires.
This fourth edition of IEC 60317-1 cancels and replaces the third edition published in 1990, its
Amendment 1 (1997) and Amendment 2 (1997). This edition constitutes a technical revision.
The main changes with respect to the previous edition are as follows:
– new requirements for appearance;
– deletion of high temperature failure requirements;
– new pin hole test requirements.

– 4 – 60317-1 © IEC:2010
The text of this standard is based on the following documents:
FDIS Report on voting
55/1176/FDIS 55/1187/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.
This International Standard is to be read in conjunction with IEC 60317-0-1 (2008).
A list of all the parts in the IEC 60317 series, under the general title Specifications for
particular types of winding wires, can be found on the IEC website.
The committee has decided that the contents of this amendment and the base 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.
60317-1 © IEC: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 and methods of test (IEC 60851) ;
2) specifications for particular types of winding wires (IEC 60317);
3) packaging of winding wires (IEC 60264).

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SPECIFICATIONS FOR PARTICULAR TYPES
OF WINDING WIRES –
Part 1: Polyvinyl acetal enamelled
round copper wire, class 105
1 Scope
This Part of IEC 60317 specifies the general requirements of enamelled round copper winding
wires of class 105 with a sole coating based on polyvinyl acetal resin, which may be modified
providing 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 105 is a thermal class that requires a minimum temperature index of 105 and a heat
shock temperature of at least 155 °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: 0,040 mm up to and including 2,500 mm;
– Grade 2: 0,040 mm up to and including 5,000 mm;
– Grade 3: 0,080 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 Terms, definitions and general notes on methods of test and appearance
3.1 Terms and definitions
For terms and definitions, see 3.1 of IEC 60317-0-1. In case of inconsistencies between
IEC 60317-0-1 and this standard, IEC 60317-1 shall prevail.
3.2 General notes on methods of test
For general notes on methods of test, see 3.2 of IEC 60317-0-1. In case of inconsistencies
between IEC 60317-0-1 and this standard, IEC 60317-1 shall prevail.

60317-1 © IEC:2010 – 7 –
3.3 Appearance
See 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 175 mm.
9 Heat shock
The minimum heat shock temperature shall be 155 °C.
9.1 Nominal conductor diameters up to and including 1,600 mm
The coating shall show no crack. The mandrel diameter shall be as specified in Table 1.
Table 1 – Heat shock
Nominal conductor diameter Elongation
before
mm Mandrel
winding
b
diameter
on mandrel
Up to and
Over
including
%
a
– 0,050
20  0,150 mm
0,050 1,600 – D
a
Or to the breaking point of the copper, whichever is less.
b
D is the overall diameter of the wire.

9.2 Nominal conductor diameters over 1,600 mm
See 9.2 of IEC 60317-0-1.
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10 Cut-through
No failure shall occur within 2 min at 170 °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 2.
Table 2 – Resistance to abrasion
Grade 1 Grade 2 Grade 3
Minimum Minimum Minimum Minimum Minimum Minimum
Nominal
average force to average force to
average force to
conductor
force to failure of force to failure of force to failure of
diameter
fai
...