IEC 60317-0-2:2020

Specifications for particular types of winding wires - Part 0-2: General requirements - Enamelled rectangular copper wire

IEC 60317-0-2:2020 specifies the general requirements of enamelled rectangular copper winding wires. The range of nominal conductor dimensions is given in 4.1 and the relevant specification sheet. This fourth edition cancels and replaces the third edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- revision to Clause 2 to add new normative references for specifications for copper rods;
- revision to 3.1 to add a new definition for the term “bonding layer”;
- revision to 3.2.1 to the conditions specified for tests to be carried out;
- revision to 4.5 to add requirements for minimal, nomimal and maximal overall dimensions with a bonding layer;
- revision to Clause 5 to reference specifications for rectangular and square copper rod;
- revision to Clause 6 to take into account nominal proof strength;
- revision to 8.2 to the adherence test requirement;
- revision to Clause 18 to make reference to the relevant specification sheet.

Spécifications pour types particuliers de fils de bobinage - Partie 0-2: Exigences générales - Fil de section rectangulaire en cuivre émaillé

L'IEC 60317-0-2:2020 spécifie les exigences générales relatives aux fils de bobinage de section rectangulaire en cuivre émaillés. La gamme des dimensions nominales des conducteurs est indiquée en 4.1 et dans la feuille de spécifications correspondante. Cette quatrième édition annule et remplace la troisième édition parue en 2013. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- révision de l'Article 2 afin d'ajouter de nouvelles références normatives pour les spécifications relatives au fil machine en cuivre;
- révision du 3.1 afin d'ajouter une nouvelle définition pour le terme "couche d'adhérence";
- révision du 3.2.1 afin de modifier les conditions spécifiées pour les essais à effectuer;
- révision du 4.5 afin d'ajouter les exigences relatives aux dimensions extérieures minimales, nominales et maximales avec une couche d'adhérence;
- révision de l'Article 5 concernant les spécifications relatives au fil machine en cuivre de sections rectangulaire et carrée;
- révision de l'Article AnchorAnchor6 afin de tenir compte de la limite conventionnelle d'élasticité nominale;
- révision du 8.2 concernant l'exigence de l'essai d'adhérence;
- révision de l'Article 18 afin de faire référence à la feuille de spécifications correspondante.

General Information

• Status: Published
• Publication Date: 09-Jun-2020
• 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-Jun-2020
• Completion Date: 26-Jun-2020

Relations

• Revises: IEC 60317-0-2:2013 - Specifications for particular types of winding wires - Part 0-2: General requirements - Enamelled rectangular copper wire
• Effective Date: 05-Sep-2023

Overview

IEC 60317-0-2:2020 - Edition 4.0 - is the International Electrotechnical Commission standard that specifies the general requirements for enamelled rectangular copper winding wire. This technical revision (replacing the 2013 edition) defines conductor dimensional ranges, mechanical and electrical performance criteria, test conditions and appearance for enamelled rectangular copper wire used in electrical windings.

Key topics and technical requirements

The standard covers a comprehensive set of requirements and test topics aligned with winding‑wire practice and IEC test methods (IEC 60851 series). Major technical subjects include:

• Conductor dimensions and tolerances (Clause 4, nominal sizes given in 4.1 and Annex A)
• Corner radii and increases in dimensions due to insulation and a newly defined bonding layer (Clauses 3.1, 4.3–4.5)
• Electrical resistance and continuity of insulation (Clause 5, 14)
• Mechanical properties: elongation, proof strength, springiness (Clauses 6–7)
• Flexibility and adherence tests, including revised adherence test requirements (Clause 8)
• Thermal performance: heat shock, temperature index (Clauses 9, 15; reference IEC 60172)
• Durability tests: cut‑through, abrasion, resistance to solvents and refrigerants, solderability (Clauses 10–13, 16–17)
• Dielectric tests: breakdown voltage, dielectric dissipation factor, pin hole test (Clauses 13, 19, 23)
• Packaging requirements (Clause 30)

Significant 2020 changes include added normative references for copper rod specifications (EN 1977, ASTM B49, ISO 1190-1), the new “bonding layer” definition and related dimensional requirements, updates to test conditions and proof‑strength considerations, and enhanced cross‑references to specification sheets.

Practical applications and who uses it

IEC 60317-0-2 is essential for:

• Winding wire manufacturers producing enamelled rectangular copper wire to meet international quality and interchangeability expectations.
• Design engineers specifying winding wire for transformers, motors, inductors, solenoids and power‑electronics windings.
• Test laboratories and QA teams performing mechanical, electrical and thermal tests per IEC 60851 methods.
• OEMs and procurement professionals ensuring supplier compliance and consistent performance across batches.
• Certification bodies and standards committees referencing harmonized test and dimensional criteria.

Using this standard helps ensure reliable insulation performance, manufacturability, and compatibility in electrical windings across industrial and consumer electrical equipment.

Related standards

• IEC 60851 (all parts) - Winding wires - Test methods
• IEC 60172 - Temperature index test procedure
• ISO 1190-1, EN 1977, ASTM B49 - copper rod/drawing stock specifications

Keywords: IEC 60317-0-2, enamelled rectangular copper wire, winding wires, conductor dimensions, bonding layer, IEC 60851, transformer wire, motor winding wire, insulation tests.

Standards Content (Sample)

IEC 60317-0-2 ®
Edition 4.0 2020-06
REDLINE VERSION
INTERNATIONAL
STANDARD
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Specifications for particular types of winding wires –
Part 0-2: General requirements – Enamelled rectangular copper wire

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IEC 60317-0-2 ®
Edition 4.0 2020-06
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Specifications for particular types of winding wires –

Part 0-2: General requirements – Enamelled rectangular copper wire

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.060.10 ISBN 978-2-8322-8526-8

– 2 – IEC 60317-0-2:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions, general notes and appearance . 8
3.1 Terms and definitions . 8
3.2 General notes . 10
3.2.1 Methods of test . 10
3.2.2 Winding wire . 10
3.3 Appearance . 10
4 Dimensions. 10
4.1 Conductor dimensions . 10
4.2 Tolerance on conductor dimensions . 11
4.3 Rounding of corners . 11
4.4 Increase in dimensions due to the insulation and the bonding layer . 14
4.4.1 Enamelled wires without a bonding layer . 14
4.4.2 Enamelled wires with a bonding layer . 14
4.5 Overall dimensions . 14
4.5.1 Nominal overall dimensions . 14
4.5.2 Minimum overall dimensions . 15
4.5.3 Maximum overall dimensions . 15
5 Electrical resistance . 15
6 Elongation . 15
7 Springiness (applicable to nominal proof strength ≤ 80 N·mm−2) . 16
8 Flexibility and adherence . 16
8.1 Mandrel winding test . 16
8.2 Adherence test . 16
9 Heat shock . 17
10 Cut-through . 17
11 Resistance to abrasion . 17
12 Resistance to solvents . 17
13 Breakdown voltage . 17
14 Continuity of insulation . 18
15 Temperature index . 18
16 Resistance to refrigerants . 18
17 Solderability . 18
18 Heat or solvent bonding . 18
19 Dielectric dissipation factor . 18
20 Resistance to transformer oil . 18
21 Loss of mass . 18
23 Pin hole test . 18
30 Packaging . 19

Annex A (informative) Nominal cross-sectional areas for preferred and intermediate
sizes . 20
Annex B (informative) Special tolerances .
Bibliography . 37

Table 1 – Conductor tolerances . 11
Table 2 – Nominal cross-sectional areas of preferred sizes . 12
Table 3 – Corner radii . 14
Table 4 – Increases in dimensions . 14
Table 5 – Percentage elongation after fracture . 16
Table 6 – Proof strength and resistivity . 16
Table 7 – Mandrel winding . 16
Table 8 – Breakdown voltage . 17
Table A.1 – Nominal cross-sectional areas . 20

– 4 – IEC 60317-0-2:2020 RLV © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 0-2: General requirements – Enamelled rectangular copper wire

FOREWORD
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International Standard IEC 60317-0-2 has been prepared by IEC technical committee 55:
Winding wires.
This fourth edition cancels and replaces the third edition published in 2013. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision to Clause 2 to add new normative references for specifications for copper rods;
b) revision to 3.1 to add a new definition for the term “bonding layer”;
c) revision to 3.2.1 to the conditions specified for tests to be carried out;
d) revision to 4.5 to add requirements for minimal, nomimal and maximal overall dimensions
with a bonding layer;
e) revision to Clause 5 to reference specifications for rectangular and square copper rod;
f) revision to Clause 6 to take into account nominal proof strength;
g) revision to 8.2 to the adherence test requirement;
h) revision to Clause 18 to make reference to the relevant specification sheet
The text of this International Standard is based on the following documents:
FDIS Report on voting
55/1847/FDIS 55/1865/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This International standard is to be read in conjunction with IEC 60851 (all parts). The clause
numbers used in this part of IEC 60317 are identical with the respective test numbers of
IEC 60851 (all parts).
In case of inconsistencies between IEC 60851 and this part of IEC 60317, the latter prevails.
The numbering of clauses in this standard is not continuous from Clauses 21 and 30 in order
to reserve space for possible future wire requirements prior to those for wire packaging.
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.

– 6 – IEC 60317-0-2:2020 RLV © IEC 2020
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document 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.
INTRODUCTION
This part of IEC 60317 forms an element of a series of standards which deals with insulated
wires used for windings in electrical equipment. It is composed of the following series:
1) Winding wires – Test methods (IEC 60851 series);
2) Specifications for particular types of winding wires (IEC 60317 series);
3) Packaging of winding wires (IEC 60264 series).

– 8 – IEC 60317-0-2:2020 RLV © IEC 2020
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 0-2: General requirements – Enamelled rectangular copper wire

1 Scope
This part of IEC 60317 specifies the general requirements of enamelled rectangular copper
winding wires.
The range of nominal conductor dimensions is given in 4.1 and the relevant specification
sheet.
2 Normative references
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 60172, Test procedure for the determination of the temperature index of enamelled and
tape wrapped winding wires
IEC 60851 (all parts), Winding wires – Test methods
IEC 60851-3, Winding wires – Test methods – Part 3: Mechanical properties
ISO 3, Preferred numbers – Series of preferred numbers
ISO 1190-1, Copper and copper alloys – Code of designation – Part 1: Designation of
materials
ISO 6892-1:2016, Metallic materials – Tensile testing – Part 1: Method of test at room
temperature
EN 1977, Copper and copper alloys – Copper drawing stock (wire rod)
ASTM B49, Standard Specification for Copper Rod for Electrical Purposes
3 Terms, definitions, general notes and appearance
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6892-1:2016 and
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

3.1.1
class
thermal performance of a wire expressed by the temperature index and the heat shock
temperature
3.1.2
coating
material which is deposited on a conductor or wire by a suitable means and then dried and/or
cured
3.1.3
conductor
bare metal after removal of the insulation
3.1.4
crack
opening in the insulation which exposes the conductor to view at the stated magnification
3.1.5
dual coating
insulation composed of two different materials, an underlying and a superimposed coating
3.1.6
enamelled wire
wire coated with an insulation of cured resin
3.1.7
grade

range of thickness of the insulation of a wire
range of increase in the overall diameter of the wire due to the enamel
3.1.8
insulation
coating or covering on the conductor with the specific function of withstanding voltage
3.1.9
nominal conductor dimension
designation of the conductor size in accordance with the IEC 60317 series
3.1.10
normal vision
20/20 vision, with corrective lenses, if necessary
3.1.11
winding wire
wire used for winding a coil to provide a magnetic field
3.1.12
wire
conductor coated or covered with an insulation
3.1.13
bonding layer
material that is deposited on an enamelled wire an which has the specific function of bonding
wires together
– 10 – IEC 60317-0-2:2020 RLV © IEC 2020
3.2 General notes
3.2.1 Methods of test
All methods of test to be used for this document are given in IEC 60851 (all parts).
The clause numbers used in this document are identical to the corresponding test numbers in
IEC 60851 (all parts).
In case of inconsistencies between the publication on methods of test and this document,
IEC 60317-0-2 shall prevail.
Where no specific range of nominal conductor dimensions is given for a test, the test applies
to all nominal conductor dimensions covered by the specification sheet.
Unless otherwise specified, all tests shall be carried out at a temperature from 15 °C
to 35 40 °C and a relative humidity from 45 25 % to 75 %. Before measurements are made,
the specimens shall be preconditioned under these atmospheric conditions for a time
sufficient to allow the specimens to reach stability.
The wire to be tested shall be removed from the packaging in such a way that the wire will not
be subjected to tension or unnecessary bends. Before each test, sufficient wire should be
discarded to ensure that any damaged wire is not included in the test specimens.
3.2.2 Winding wire
When reference is made to a winding wire according to a standard of the IEC 60317 series
mentioned under Clause 2, the following information is given in the description:
– reference to IEC specification;
– nominal conductor dimensions in millimetres (width × thickness);
– grade;
– nominal proof strength minimum (and maximum) value.
−2
EXAMPLE: IEC 60317-17 – 4,00 × 1,00 Grade 1 Rp = 120 N⋅mm
0.2
3.3 Appearance
The film coating shall be essentially smooth and continuous, free from streaks, blisters and
foreign material when examined with normal vision, in accordance with good commercial
practice, as wound on the original spool or reel.
4 Dimensions
4.1 Conductor dimensions
The dimensions for width and thickness of conductors of winding wires with rectangular cross-
section, recommended in this document, are taken from the R 20 and R 40 series in ISO 3.
Preferred sizes are combinations of width and thickness, both in accordance with the R 20
series.
Intermediate sizes are combinations of width or thickness in accordance with the R 20 series
with the other dimension in accordance with the R 40 series.
This document covers:
– widths from 2,00 mm up to and including 16,00 31,50 mm;

– thicknesses from 0,80 mm up to and including 5,60 10,00 mm.
For thicknesses over 5,60 mm up to and including 10 mm and for widths over 16 mm up to
and including 25 mm where, for technical reasons, additional sizes may be needed, the R 40
series shall be used. The ratio width/thickness shall be within the specified limits.
Combinations of R 40 and R 40 are not allowed in the case of additional sizes.
The ratio width/thickness shall be greater than or equal to 1,4:1 and shall not exceed 8:1.
*
The actual values of dimensions are given in Table 2 .
The nominal cross-sectional areas for preferred sizes are given in Table 2, and the nominal
cross-sectional areas for intermediate sizes are given in Table A.1.
4.2 Tolerance on conductor dimensions
The conductor dimensions shall not differ from the nominal values by more than the tolerance
given in Table 1.
Table 1 – Conductor tolerances
Nominal width or thickness of the conductor Tolerance
Mm ±
Over Up to and including mm
– 3,15 0,030
3,15 6,30 0,050
6,30 12,50 0,070
12,50 16,00 0,100
16,00 22,40 0,130
22,40 31,50 0,150
4.3 Rounding of corners
The arc shall merge smoothly into the flat surfaces of the conductor and the strip shall be free
from sharp, rough and projecting edges. The conductor shall have radiused corners complying
with Table 3.The specified radii shall be maintained within ±25 %.

________
*
Dimensions according to R 20 series are printed in larger type.

– 12 – IEC 60317-0-2:2020 RLV © IEC 2020

Table 2 – Nominal cross-sectional areas of preferred sizes

Thickness
mm 0,80 0,90 1,00 1,12 1,25 1,40 1,60 1,80 2,00 2,24 2,50 2,80 3,15 3,55 4,00 4,50 5,00 5,60 6,30 7,10 8,00 9,00 10,0
*
Corner radius Corner radius (0,5 mm) Corner radius (0,65 mm) Corner radius (0,80 mm) Corner radius (1,0 mm) Corner radius (1,25 mm)

2,00 1,463 1,626 1,785 2,025 2,285 2,585

2,24 1,655 1,842 2,025 2,294 2,585 2,921 3,369

2,50 1,863 2,076 2,285 2,585 2,910 3,285 3,785 4,137
Not recommended
2,80 2,103 2,346 2,585 2,921 3,285 3,705 4,265 4,677 5,237
Ratio width/thickness smaller than 1,4:1

3,15 2,383 2,661 2,935 3,313 3,723 4,195 4,825 5,307 5,937 6,693

3,55 2,703 3,021 3,335 3,761 4,223 4,755 5,465 6,027 6,737 7,589 8,326

4,00 3,063 3,426 3,785 4,265 4,785 5,385 6,185 6,837 7,637 8,597 9,451 10,65

4,50 3,463 3,876 4,285 4,825 5,410 6,085 6,985 7,737 8,637 9,717 10,70 12,05 13,63

5,00 3,863 4,326 4,785 5,385 6,035 6,785 7,785 8,637 9,637 10,84 11,95 13,45 15,20 17,20

5,60 4,343 4,866 5,385 6,057 6,785 7,625 8,745 9,717 10,84 12,18 13,45 15,13 17,09 19,33 21,54

6,30 4,903 5,496 6,085 6,841 7,660 8,605 9,865 10,98 12,24 13,75 15,20 17,09 19,30 21,82 24,34 27,49

7,10 6,216 6,885 7,737 8,660 9,725 11,15 12,42 13,84 15,54 17,20 19,33 21,82 24,66 27,54 31,09 34,64

8,00  7,785 8,745 9,785 10,99 12,59 14,04 15,64 17,56 19,45 21,85 24,65 27,85 31,14 35,14 39,14 43,94
9,00  9,865 11,04 12,39 14,19 15,84 17,64 19,80 21,95 24,65 27,80 31,40 35,14 39,64 44,14 49,54 55,36
10,0   12,29 13,79 15,79 17,64 19,64 22,04 24,45 27,45 30,95 34,95 39,14 44,14 49,14 55,14 61,66 69,66
11,2   15,47 17,71 19,80 22,04 24,73 27,45 30,81 34,73 39,21 43,94 49,54 55,14 61,86 69,22 78,18 88,26
12,5    19,79 22,14 24,64 27,64 30,70 34,45 38,83 43,83 49,14 55,39 61,64 69,14 77,41 87,41 98,66 111,2
14,0    24,84 27,64 31,00 34,45 38,65 43,55 49,15 55,14 62,14 69,14 77,54 86,86 98,06 110,7 124,7 138,7
16,0     31,64 35,48 39,45 44,25 49,85 56,25 63,14 71,14 79,14 88,74 99,46 112,3 126,7 142,7 158,7

18,0     39,96 44,45 49,85 56,15 63,35 71,14 80,14 89,14 99,94 112,1 126,5 142,7 160,7 178,7
Not recommended
20,0      49,45 55,45 62,45 70,45 79,14 89,14 99,14 111,1 124,7 140,7 158,7 178,7 198,7
Ratio width/thickness over 8:1
22,4       62,17 70,01 78,97 88,74 99,94 111,1 124,6 139,8 157,7 177,9 200,3 222,7
25,0        78,20 88,20 99,14 111,6 124,1 139,1 156,2 176,2 198,7 223,7 248,7
28,0         98,85 111,1 125,1 139,1 155,9 175,1 197,5 222,7 250,7 278,7
31,5          125,1 140,9 156,6 175,5 197,1 222,3 250,7 282,2 313,7
*
0,5 × nominal thickness
Width
– 14 – IEC 60317-0-2:2020 RLV © IEC 2020
Table 3 – Corner radii
Nominal thickness of conductor
Corner
radius
mm
Up to and including mm
Over
– 1,00 0,5 × nominal thickness
*
1,00 1,60 0,50
**
1,60 2,24 0,65
2,24 3,55 0,80
3,55 5,60 1,00
5,60 10,00 1,25
NOTE If agreed between purchaser and supplier, the corner radii for wires with a
width greater than 4,8 mm may be:
* 0,5 mm × t, where t is the nominal thickness of the conductor;
** 0,80 mm.
4.4 Increase in dimensions due to the insulation and the bonding layer
4.4.1 Enamelled wires without a bonding layer
The increase in width or thickness due to the insulation shall be as given in Table 4.
Table 4 – Increases in dimensions
Grade Increase in dimensions
mm
Minimum Nominal Maximum
1 0,06 0,085 0,11
2 0,12 0,145 0,17
4.4.2 Enamelled wires with a bonding layer
The increase in dimensions due to the bonding layer for grades 1B and 2B shall be
(0,04 ± 0,01) mm.
4.5 Overall dimensions
4.5.1 Nominal overall dimensions
4.5.1.1 Nominal overall dimensions without a bonding layer
The nominal overall dimensions shall be calculated as the sum of the nominal bare conductor
and the nominal increase in dimension due to the insulation.
4.5.1.2 Nominal overall dimensions with a bonding layer
The nominal overall dimensions shall be calculated as the sum of the nominal bare conductor,
the nominal increase in dimension due to the insulation, and the nominal increase in
dimension due to the bonding layer.

4.5.2 Minimum overall dimensions
4.5.2.1 Minimum overall dimensions without a bonding layer
The minimum overall dimensions shall be calculated as the sum of the minimum bare
conductor and the minimum increase in dimension due to the insulation. See also note under
4.5.3.
4.5.2.2 Minimum overall dimensions with a bonding layer
The minimum overall dimensions shall be calculated as the sum of the minimum bare
conductor, the minimum increase in dimension due to the insulation, and the minimum
increase in dimension due to the bonding layer.
4.5.3 Maximum overall dimensions
4.5.3.1 Maximum overall dimensions without a bonding layer
The maximum overall dimensions shall be calculated as the sum of the maximum bare
conductor and the maximum increase in dimension due to the insulation.
NOTE When agreed between purchaser and supplier, special tolerances for grade 2 as given in Annex B can be
used to calculate special maximum and minimum dimensions.
4.5.3.2 Maximum overall dimensions with a bonding layer
The maximum overall dimensions shall be calculated as the sum of the maximum bare
conductor, the maximum increase in dimension due to the insulation, and the maximum
increase in dimension due to the bonding layer.
5 Electrical resistance
The copper rod being used shall comply with at least one of EN 1977, ISO 1190-1 or ASTM
B49.
The resistance of the wire shall be expressed as the DC resistance at 20 °C. The method
used shall provide an accuracy of 0,5 %.
The maximum value of resistance shall be not greater than the value calculated for the
minimum tolerated cross-sectional area of the conductor resulting from the minimum
dimensions in thickness and width and the maximum for the corner radius, and with a
2 –1
resistivity of 1/58 Ω·mm ·m given in Table 6.
One measurement shall be made.
6 Elongation
The elongation at fracture shall be in accordance with the values given in Table 5.
The percentage elongation after fracture shall be measured according to Clause 20 of
ISO 6892-1:2016. When the nominal proof strength, plastic extension is not specified or a
nominal proof strength, plastic extension of 80 N/mm is required, the limits of Table 5 apply.
Otherwise, the measurement is performed for reference only.

– 16 – IEC 60317-0-2:2020 RLV © IEC 2020
Table 5 – Percentage elongation after fracture
Nominal thickness of the conductor Minimum elongation
mm %
Over Up to and including
– 2,50 30
2,50 5,60 32
5,60 10,00 35
When the value of nominal proof strength, plastic extension is specified, the measured proof
strength shall be within the tolerances given in Table 6.
Table 6 – Proof strength and resistivity
Proof strength Maximum
resistivity
Nominal value Tolerance
−2 2 −1
N⋅mm Ω·mm ·m
80 −0 / +30 % 1/58
120 −0 / +20 % 1/58
150 −0 / +20 % 1/58
180 −0 / +20 % 1/57,5
The proof strength, plastic extension shall be measured at the specified percentage of plastic
extension, with the method described in Clause 13 of ISO 6892-1:2016; if not otherwise
specified, the percentage shall be 0,2 % (R ).
p0,2
If required by the customer, the test shall be performed according to Clause 10 of
ISO 6892‑1:2016. Otherwise, the test shall be performed as described in IEC 60851-3.
−2
7 Springiness (applicable to nominal proof strength ≤ 80 N·mm )
The wire shall not exceed the maximum springback of 5°.
8 Flexibility and adherence
8.1 Mandrel winding test
The coating shall show no crack after the wire has been bent flatwise and edgewise on a
mandrel with a diameter as specified in Table 7.
Table 7 – Mandrel winding
Wire bent on Mandrel diameter
Width Sizes up to and including 10 mm 4 × width
Sizes over 10 mm 5 × width
Thickness All sizes 4 × thickness

8.2 Adherence test
The wire shall be stretched by 15 % or to the breaking point, whichever is less. The distance
of loss of adherence shall be less than 1 × width.

9 Heat shock
The coating shall show no crack after the wire has been bent flatwise on a mandrel with a
diameter of six times the thickness.
The minimum heat shock temperature is given in the relevant specification sheet.
10 Cut-through
Test requirement under consideration.
11 Resistance to abrasion
Test inappropriate.
12 Resistance to solvents
Using a pencil of hardness "H" and standard solvent, the coating shall not be removed.
13 Breakdown voltage
When tested at room temperature, at least four of the five specimens tested shall not break
down at a voltage less than or equal to that given in Table 8, and the fifth shall not break
down at less than 50 % of the values specified.
When required by the purchaser, the wire shall be tested at elevated temperature.
The elevated temperature is given in the relevant specification sheet.
Table 8 – Breakdown voltage
Minimum breakdown voltage (r.m.s.)
Grade V
Room temperature Elevated temperature
1 1 000 750
2 2 000 1 500
Grade Minimum breakdown voltage (RMS)
V
Without bonding layer With bonding layer
Room temperature Elevated temperature Room temperature Elevated temperature
1 1 000 750 1 500 1 000
2 2 000 1 500 2 500 2 000
– 18 – IEC 60317-0-2:2020 RLV © IEC 2020
14 Continuity of insulation
Test inappropriate.
15 Temperature index
The test shall be carried out on a rectangular wire in accordance with IEC 60172, unless
otherwise agreed between the purchaser and the supplier.
When required by a purchaser, the supplier of the enamelled wire shall supply evidence that
the wire meets the requirements for the temperature index.
NOTE 1 The temperature index requirement based on an extrapolated life of 20 000 h relates to enamelled wires
tested unvarnished and not as part of an insulation system.
NOTE 2 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.
16 Resistance to refrigerants
Test inappropriate.
17 Solderability
Test inappropriate.
18 Heat or solvent bonding
Test inappropriate. For requirements, the relevant specification sheet applies.
19 Dielectric dissipation factor
For requirements, the relevant specification sheet applies.
20 Resistance to transformer oil
For requirements, the relevant specification sheet applies.
21 Loss of mass
Test inappropriate.
23 Pin hole test
Test inappropriate.
30 Packaging
The kind of packaging may influence certain properties of the wire, for example springback
springiness and proof strength. Therefore, the kind of packaging for example, the type of
spool, shall be agreed between the purchaser and the supplier.
The wire shall be evenly and compactly wound on spools or placed in containers. No spool or
container shall contain more than one length of wire unless agreed to by the purchaser and
the supplier. Marking of the label when there is more than one length and/or identification of
the separate lengths in the package shall be agreed to by the purchaser and the supplier.
Where wires are delivered in coils, the dimensions and the maximum weights of such coils
shall be agreed between the purchaser and the supplier. Any additional protection for coils
shall also be agreed between the purchaser and the supplier.
Labels shall be attached to each packaging unit as agreed between the supplier and the user
and shall include the following information:
a) manufacturer's name and/or trademark;
b) type of wire and insulation, for instance trade name and/or IEC specification number;
c) having a bonding layer (if any);
d) nominal proof strength;
e) net mass of wire;
f) nominal dimension(s) of wire and grade of insulation;
g) date of manufacture.
– 20 – IEC 60317-0-2:2020 RLV © IEC 2020
Annex A
(informative)
Nominal cross-sectional areas for preferred and intermediate sizes
Table A.1 provides nominal cross-sectional areas for preferred and intermediate sizes of
rectangular copper bare conductors, from which the user may select intermediate sizes only
for technical reasons.
Table A.1 – Nominal cross-sectional areas
Nominal Nominal Radius on Nominal Nominal Nominal Radius on Nominal
width thickness corners cross- width thickness corners cross-
section area  section
mm mm mm mm mm mm mm area
mm
2,00 0,80 * 1,463 2,50 1,25 0,5 2,910
0,85 * 1,545  1,32 0,5 3,085
0,90 * 1,626  1,40 0,5 3,285
0,95 * 1,706  1,50 0,5 3,535
1,00 * 1,785  1,60 0,5 3,785
1,06 0,5 1,905  1,70 0,65 3,887
1,12 0,5 2,025  1,80 0,65 4,137
1,18 0,5 2,145
1,25 0,5 2,285 2,65 0,80 * 1,983
1,32 0,5 2,425  0,90 * 2,211
1,40 0,5 2,585  1,00 * 2,435
2,12 0,80 * 1,559  1,12 0,5 2,753
0,90 * 1,734  1,25 0,5 3,098
1,00 * 1,905  1,40 0,5 3,495
1,60 0,5 4,025
1,12 0,5 2,160
1,25 0,5 2,435  1,80 0,65 4,407
1,40 0,5 2,753
2,80 0,80 * 2,103
2,24 0,80 * 1,655  0,85 * 2,225
0,85 * 1,749  0,90 * 2,346
0,90 * 1,842  0,95 * 2,466
0,95 * 1,934  1,00 * 2,585
1,00 * 2,025
1,06 0,5 2,753
1,06 0,5 2,160  1,12 0,5 2,921
1,12 0,5 2,294  1,18 0,5 3,089
1,18 0,5 2,429  1,25 0,5 3,285
1,25 0,5 2,585  1,32 0,5 3,481
1,32 0,5 2,742  1,40 0,5 3,705
1,40 0,5 2,921  1,50 0,5 3,985
1,50 0,5 3,145  1,60 0,5 4,265
1,60 0,5 3,369
1,70 0,65 4,397
2,36 0,80 * 1,751  1,80 0,65 4,677
0,90 * 1,950  1,90 0,65 4,957
1,00 * 2,145  2,00 0,65 5,237

1,12 0,5 2,429 3,00 0,80 * 2,263
1,25 0,5 2,735  0,90 * 2,526
1,40 0,5 3,089  1,00 * 2,785
1,60 0,5 3,561
1,12 0,5 3,145
2,50 0,80 * 1,863  1,25 0,5 3,535
0,85 * 1,970  1,40 0,5 3,985
0,90 * 2,076  1,60 0,5 4,585
0,95 * 2,181
1,00 * 2,285  1,80 0,65 5,037
2,00 0,65 5,637
1,06 0,5 2,435
1,12 0,5 2,585 3,15 0,80 * 2,383
1,18 0,5 2,736  0,85 * 2,522
* 0,5 nominal thickness
Table A.1 (2 of 7)
Nominal Nominal Radius on Nominal Nominal Nominal Radius on Nominal
width thickness corners cross- width thickness corners cross-
section area  section
mm mm mm mm mm mm mm area
mm
3,15 0,90 * 2,661 3,75 0,80 * 2,863
0,95 * 2,799  0,90 * 3,201
1,00 * 2,935  1,00 * 3,535
1,06 0,5 3,124  1,12 0,5 3,985
1,12 0,5 3,313  1,25 0,5 4,473
1,18 0,5 3,502  1,40 0,5 5,035
1,25 0,5 3,723  1,60 0,5 5,785
1,32 0,5 3,943
1,40 0,5 4,195  1,80 0,65 6,387
1,50 0,5 4,510  2,00 0,65 7,137
1,60 0,5 4,825  2,24 0,65 8,037

1,70 0,65 4,992  2,50 0,8 8,826
1,80 0,65 5,307
1,90 0,65 5,622 4,00 0,80 * 3,063
2,00 0,65 5,937  0,85 * 3,245
2,12 0,65 6,315  0,90 * 3,426
2,24 0,65 6,693  0,95 * 3,606
1,00 * 3,785
3,35 0,80 * 2,543
0,90 * 2,841  1,06 0,5 4,025
1,00 * 3,135  1,12 0,5 4,265
1,18 0,5 4,505
1,12 0,5 3,537  1,25 0,5 4,785
1,25 0,5 3,973  1,32 0,5 5,065
1,40 0,5 4,475  1,40 0,5 5,385
1,60 0,5 5,145  1,50 0,5 5,785
1,60 0,5 6,185
1,80 0,65 5,667
2,00 0,65 6,337  1,70 0,65 6,437
2,24 0,65 7,141  1,80 0,65 6,837
1,90 0,65 7,237
3,55 0,80 * 2,703  2,00 0,65 7,637
0,85 * 2,862  2,12 0,65 8,117
0,90 * 3,021  2,24 0,65 8,597
0,95 * 3,179
1,00 * 3,335  2,36 0,8 8,891
2,50 0,8 9,451
1,06 0,5 3,548  2,65 0,8 10,05
1,12 0,5 3,761  2,80 0,8 10,65
1,18 0,5 3,974
1,25 0,5 4,223 4,25 0,80 * 3,263
1,32 0,5 4,471  0,90 * 3,651
1,40 0,5 4,755  1,00 * 4,035
1,50 0,5 5,110
1,60 0,5 5,465  1,12 0,5 4,545
1,25 0,5 5,098
1,70 0,65 5,672  1,40 0,5 5,735
1,80 0,65 6,027  1,60 0,5 6,585
1,90 0,65 6,382
2,00 0,65 6,737  1,80 0,65 7,287
2,12 0,65 7,163  2,00 0,65 8,137
2,24 0,65 7,589  2,24 0,65 9,157

2,36 0,8 7,829  2,50 0,8 10,08
2,50 0,8 8,326  2,80 0,8 11,35

* 0,5 nominal thickness
– 22 – IEC 60317-0-2:2020 RLV © IEC 2020
Table A.1 (3 of 7)
Nominal Nominal Radius on Nominal Nominal Nominal Radius on Nominal
width thickness corners cross- width thickness corners cross-
section area  section
mm mm mm mm mm mm mm area
mm
4,50 0,80 * 3,463 5,00 1,70 0,65 8,137
0,85 * 3,670  1,80 0,65 8,637
0,90 * 3,876  1,90 0,65 9,137
0,95 * 4,081  2,00 0,65 9,637
1,00 * 4,285  2,12 0,65 10,24
2,24 0,65 10,84
1,06 0,5 4,555
1,12 0,5 4,825  2,36 0,8 11,25
1,18 0,5 5,095  2,50 0,8 11,95
1,25 0,5 5,410  2,65 0,8 12,70
1,32 0,5 5,725  2,80 0,8 13,45
1,40 0,5 6,085  3,00 0,8 14,45
1,50 0,5 6,535  3,15 0,8 15,20
1,60 0,5 6,985  3,35 0,8 16,20
3,55 0,8 17,20
1,70 0,65 7,287
1,80 0,65 7,737 5,30 0,80 * 4,103
1,90 0,65 8,187  0,90 * 4,596
2,00 0,65 8,637  1,00 * 5,085
2,12 0,65 9,177
2,24 0,65 9,717  1,12 0,5 5,721
1,25 0,5 6,410
2,36 0,8 10,07  1,40 0,5 7,205
2,50 0,8 10,70  1,60 0,5 8,265
2,65 0,8 11,38
2,80 0,8 12,05  1,80 0,65 9,177
3,00 0,8 12,95  2,00 0,65 10,24
3,15 0,8 13,63  2,24 0,65 11,51

4,75 0,80 * 3,663  2,50 0,8 12,70
0,90 * 4,101  2,80 0,8 14,29
1,00 * 4,535  3,15 0,8 16,15
3,55 0,8 18,27
1,12 0,5 5,105
1,25 0,5 5,723 5,60 0,80 * 4,343
1,40 0,5 6,435  0,85 * 4,605
1,60 0,5 7,385  0,90 * 4,866
0,95 * 5,126
1,80 0,65 8,188  1,00 * 5,385
2,00 0,65 9,137
2,24 0,65 10,28  1,06 0,5 5,721
1,12 0,5 6,057
2,50 0,8 11,33  1,18 0,5 6,393
2,80 0,8 12,75  1,25 0,5 6,785
3,15 0,8 14,41  1,32 0,5 7,177
1,40 0,5 7,625
5,00 0,80 * 3,863  1,50 0,5 8,185
0,85 * 4,095  1,60 0,5 8,745
0,90 * 4,326
0,95 * 4,556  1,70 0,65 9,157
1,00 * 4,785  1,80 0,65 9,717
1,90 0,65 10,28
1,06 0,5 5,085  2,00 0,65 10,84
1,12 0,5 5,385  2,12 0,65 11,51
1,18 0,5 5,685  2,24 0,65 12,18
1,25 0,5 6,035
1,32 0,5 6,385  2,36 0,8 12,67
1,40 0,5 6,785  2,50 0,8 13,45
1,50 0,5 7,285  2,65 0,8 14,29
1,60 0,5 7,785  2,80 0,8 15,13

* 0,5 nominal thickness
Table A.1 (4 of 7)
Nominal Nominal Radius on Nominal Nominal Nominal Radius on Nominal
width thickness corners cross- width thickness corners cross-
section area  section
mm mm mm mm mm mm mm area
mm
5,60 3,00 0,8 16,25 6,30 3,75 1,0 22,77
3,15 0,8 17,09  4,00 1,0 24,34
3,35 0,8 18,21  4,25 1,0 25,92
3,55 0,8 19,33  4,50 1,0 27,49

3,75 1,0 20,14 6,70 0,90 * 5,856
4,00 1,0 21,54  1,00 * 6,485
6,00 0,80 * 4,663  1,12 0,5 7,289
0,90 * 5,226  1,25 0,5 8,160
1,00 * 5,785  1,40 0,5 9,165
1,60 0,5 10,51
1,12 0,5 6,505
1,25 0,5 7,285  1,80 0,65 11,70
1,40 0,5 8,185  2,00 0,65 13,04
1,60 0,5 9,385  2,24 0,65 14,65

1,8
...

IEC 60317-0-2 ®
Edition 4.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –
Part 0-2: General requirements – Enamelled rectangular copper wire

Spécifications pour types particuliers de fils de bobinage –
Partie 0-2: Exigences générales – Fil de section rectangulaire en cuivre émaillé

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IEC 60317-0-2 ®
Edition 4.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –

Part 0-2: General requirements – Enamelled rectangular copper wire

Spécifications pour types particuliers de fils de bobinage –

Partie 0-2: Exigences générales – Fil de section rectangulaire en cuivre émaillé

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-8426-1

– 2 – IEC 60317-0-2:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, general notes and appearance . 7
3.1 Terms and definitions . 7
3.2 General notes . 9
3.2.1 Methods of test . 9
3.2.2 Winding wire . 9
3.3 Appearance . 9
4 Dimensions. 9
4.1 Conductor dimensions . 9
4.2 Tolerance on conductor dimensions . 10
4.3 Rounding of corners . 10
4.4 Increase in dimensions due to the insulation and the bonding layer . 12
4.4.1 Enamelled wires without a bonding layer . 12
4.4.2 Enamelled wires with a bonding layer . 12
4.5 Overall dimensions . 12
4.5.1 Nominal overall dimensions . 12
4.5.2 Minimum overall dimensions . 13
4.5.3 Maximum overall dimensions . 13
5 Electrical resistance . 13
6 Elongation . 13
−2
7 Springiness (applicable to nominal proof strength ≤ 80 N·mm ) . 14
8 Flexibility and adherence . 14
8.1 Mandrel winding test . 14
8.2 Adherence test . 14
9 Heat shock . 14
10 Cut-through . 15
11 Resistance to abrasion . 15
12 Resistance to solvents . 15
13 Breakdown voltage . 15
14 Continuity of insulation . 15
15 Temperature index . 15
16 Resistance to refrigerants . 16
17 Solderability . 16
18 Heat or solvent bonding . 16
19 Dielectric dissipation factor . 16
20 Resistance to transformer oil . 16
21 Loss of mass . 16
23 Pin hole test . 16
30 Packaging . 16

Annex A (informative) Nominal cross-sectional areas for preferred and intermediate
sizes . 18
Bibliography . 27

Table 1 – Conductor tolerances . 10
Table 2 – Nominal cross-sectional areas of preferred sizes . 11
Table 3 – Corner radii . 12
Table 4 – Increases in dimensions . 12
Table 5 – Percentage elongation after fracture . 13
Table 6 – Proof strength and resistivity . 14
Table 7 – Mandrel winding . 14
Table 8 – Breakdown voltage . 15
Table A.1 – Nominal cross-sectional areas . 18

– 4 – IEC 60317-0-2:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 0-2: General requirements – Enamelled rectangular copper wire

FOREWORD
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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 60317-0-2 has been prepared by IEC technical committee 55:
Winding wires.
This fourth edition cancels and replaces the third edition published in 2013. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision to Clause 2 to add new normative references for specifications for copper rods;
b) revision to 3.1 to add a new definition for the term “bonding layer”;
c) revision to 3.2.1 to the conditions specified for tests to be carried out;
d) revision to 4.5 to add requirements for minimal, nomimal and maximal overall dimensions
with a bonding layer;
e) revision to Clause 5 to reference specifications for rectangular and square copper rod;

f) revision to Clause 6 to take into account nominal proof strength;
g) revision to 8.2 to the adherence test requirement;
h) revision to Clause 18 to make reference to the relevant specification sheet
The text of this International Standard is based on the following documents:
FDIS Report on voting
55/1847/FDIS 55/1865/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This International standard is to be read in conjunction with IEC 60851 (all parts). The clause
numbers used in this part of IEC 60317 are identical with the respective test numbers of
IEC 60851 (all parts).
In case of inconsistencies between IEC 60851 and this part of IEC 60317, the latter prevails.
The numbering of clauses in this standard is not continuous from Clauses 21 and 30 in order
to reserve space for possible future wire requirements prior to those for wire packaging.
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 committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 6 – IEC 60317-0-2:2020 © IEC 2020
INTRODUCTION
This part of IEC 60317 forms an element of a series of standards which deals with insulated
wires used for windings in electrical equipment. It is composed of the following series:
1) Winding wires – Test methods (IEC 60851 series);
2) Specifications for particular types of winding wires (IEC 60317 series);
3) Packaging of winding wires (IEC 60264 series).

SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 0-2: General requirements – Enamelled rectangular copper wire

1 Scope
This part of IEC 60317 specifies the general requirements of enamelled rectangular copper
winding wires.
The range of nominal conductor dimensions is given in 4.1 and the relevant specification
sheet.
2 Normative references
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 60172, Test procedure for the determination of the temperature index of enamelled and
tape wrapped winding wires
IEC 60851 (all parts), Winding wires – Test methods
IEC 60851-3, Winding wires – Test methods – Part 3: Mechanical properties
ISO 3, Preferred numbers – Series of preferred numbers
ISO 1190-1, Copper and copper alloys – Code of designation – Part 1: Designation of
materials
ISO 6892-1:2016, Metallic materials – Tensile testing – Part 1: Method of test at room
temperature
EN 1977, Copper and copper alloys – Copper drawing stock (wire rod)
ASTM B49, Standard Specification for Copper Rod for Electrical Purposes
3 Terms, definitions, general notes and appearance
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6892-1:2016 and
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp

– 8 – IEC 60317-0-2:2020 © IEC 2020
3.1.1
class
thermal performance of a wire expressed by the temperature index and the heat shock
temperature
3.1.2
coating
material which is deposited on a conductor or wire by a suitable means and then dried and/or
cured
3.1.3
conductor
bare metal after removal of the insulation
3.1.4
crack
opening in the insulation which exposes the conductor to view at the stated magnification
3.1.5
dual coating
insulation composed of two different materials, an underlying and a superimposed coating
3.1.6
enamelled wire
wire coated with an insulation of cured resin
3.1.7
grade
range of increase in the overall diameter of the wire due
to the enamel
3.1.8
insulation
coating or covering on the conductor with the specific function of withstanding voltage
3.1.9
nominal conductor dimension
designation of the conductor size in accordance with the IEC 60317 series
3.1.10
normal vision
20/20 vision, with corrective lenses, if necessary
3.1.11
winding wire
wire used for winding a coil to provide a magnetic field
3.1.12
wire
conductor coated or covered with an insulation
3.1.13
bonding layer
material that is deposited on an enamelled wire an which has the specific function of bonding
wires together
3.2 General notes
3.2.1 Methods of test
All methods of test to be used for this document are given in IEC 60851 (all parts).
The clause numbers used in this document are identical to the corresponding test numbers in
IEC 60851 (all parts).
In case of inconsistencies between the publication on methods of test and this document,
IEC 60317-0-2 shall prevail.
Where no specific range of nominal conductor dimensions is given for a test, the test applies
to all nominal conductor dimensions covered by the specification sheet.
Unless otherwise specified, all tests shall be carried out at a temperature from 15 °C to 40 °C
and a relative humidity from 25 % to 75 %. Before measurements are made, the specimens
shall be preconditioned under these atmospheric conditions for a time sufficient to allow the
specimens to reach stability.
The wire to be tested shall be removed from the packaging in such a way that the wire will not
be subjected to tension or unnecessary bends. Before each test, sufficient wire should be
discarded to ensure that any damaged wire is not included in the test specimens.
3.2.2 Winding wire
When reference is made to a winding wire according to a standard of the IEC 60317 series
mentioned under Clause 2, the following information is given in the description:
– reference to IEC specification;
– nominal conductor dimensions in millimetres (width × thickness);
– grade;
– nominal proof strength minimum (and maximum) value.
−2
EXAMPLE: IEC 60317-17 – 4,00 × 1,00 Grade 1 Rp = 120 N⋅mm
0.2
3.3 Appearance
The film coating shall be essentially smooth and continuous, free from streaks, blisters and
foreign material when examined with normal vision, in accordance with good commercial
practice, as wound on the original spool or reel.
4 Dimensions
4.1 Conductor dimensions
The dimensions for width and thickness of conductors of winding wires with rectangular cross-
section, recommended in this document, are taken from the R 20 series in ISO 3.
Preferred sizes are combinations of width and thickness, both in accordance with the R 20
series.
Intermediate sizes are combinations of width or thickness in accordance with the R 20 series
with the other dimension in accordance with the R 40 series.
This document covers:
– widths from 2,00 mm up to and including 31,50 mm;

– 10 – IEC 60317-0-2:2020 © IEC 2020

– thicknesses from 0,80 mm up to and including 10,00 mm.
The ratio width/thickness shall be within the specified limits. Combinations of R 40 and R 40
are not allowed in the case of additional sizes.
The ratio width/thickness shall be greater than or equal to 1,4:1 and shall not exceed 8:1.
The actual values of dimensions are given in Table 2.
The nominal cross-sectional areas for preferred sizes are given in Table 2, and the nominal
cross-sectional areas for intermediate sizes are given in Table A.1.
4.2 Tolerance on conductor dimensions
The conductor dimensions shall not differ from the nominal values by more than the tolerance
given in Table 1.
Table 1 – Conductor tolerances
Nominal width or thickness of the conductor Tolerance
mm ±
Over Up to and including mm
– 3,15 0,030
3,15 6,30 0,050
6,30 12,50 0,070
12,50 16,00 0,100
16,00 22,40 0,130
22,40 31,50 0,150
4.3 Rounding of corners
The arc shall merge smoothly into the flat surfaces of the conductor and the strip shall be free
from sharp, rough and projecting edges. The conductor shall have radiused corners complying
with Table 3.The specified radii shall be maintained within ±25 %.

Table 2 – Nominal cross-sectional areas of preferred sizes
Thickness
mm 0,80 0,90 1,00 1,12 1,25 1,40 1,60 1,80 2,00 2,24 2,50 2,80 3,15 3,55 4,00 4,50 5,00 5,60 6,30 7,10 8,00 9,00 10,0
*
Corner radius Corner radius (0,5 mm) Corner radius (0,65 mm) Corner radius (0,80 mm) Corner radius (1,0 mm) Corner radius (1,25 mm)

2,00 1,463 1,626 1,785 2,025 2,285 2,585

2,24 1,655 1,842 2,025 2,294 2,585 2,921 3,369

2,50 1,863 2,076 2,285 2,585 2,910 3,285 3,785 4,137
Not recommended
2,80 2,103 2,346 2,585 2,921 3,285 3,705 4,265 4,677 5,237
Ratio width/thickness smaller than 1,4:1

3,15 2,383 2,661 2,935 3,313 3,723 4,195 4,825 5,307 5,937 6,693

3,55 2,703 3,021 3,335 3,761 4,223 4,755 5,465 6,027 6,737 7,589 8,326

4,00 3,063 3,426 3,785 4,265 4,785 5,385 6,185 6,837 7,637 8,597 9,451 10,65

4,50 3,463 3,876 4,285 4,825 5,410 6,085 6,985 7,737 8,637 9,717 10,70 12,05 13,63

5,00 3,863 4,326 4,785 5,385 6,035 6,785 7,785 8,637 9,637 10,84 11,95 13,45 15,20 17,20

5,60 4,343 4,866 5,385 6,057 6,785 7,625 8,745 9,717 10,84 12,18 13,45 15,13 17,09 19,33 21,54

6,30 4,903 5,496 6,085 6,841 7,660 8,605 9,865 10,98 12,24 13,75 15,20 17,09 19,30 21,82 24,34 27,49

7,10 6,216 6,885 7,737 8,660 9,725 11,15 12,42 13,84 15,54 17,20 19,33 21,82 24,66 27,54 31,09 34,64

8,00  7,785 8,745 9,785 10,99 12,59 14,04 15,64 17,56 19,45 21,85 24,65 27,85 31,14 35,14 39,14 43,94
9,00  9,865 11,04 12,39 14,19 15,84 17,64 19,80 21,95 24,65 27,80 31,40 35,14 39,64 44,14 49,54 55,36
10,0   12,29 13,79 15,79 17,64 19,64 22,04 24,45 27,45 30,95 34,95 39,14 44,14 49,14 55,14 61,66 69,66
11,2   15,47 17,71 19,80 22,04 24,73 27,45 30,81 34,73 39,21 43,94 49,54 55,14 61,86 69,22 78,18 88,26
12,5    19,79 22,14 24,64 27,64 30,70 34,45 38,83 43,83 49,14 55,39 61,64 69,14 77,41 87,41 98,66 111,2
14,0    24,84 27,64 31,00 34,45 38,65 43,55 49,15 55,14 62,14 69,14 77,54 86,86 98,06 110,7 124,7 138,7
16,0     31,64 35,48 39,45 44,25 49,85 56,25 63,14 71,14 79,14 88,74 99,46 112,3 126,7 142,7 158,7

18,0     39,96 44,45 49,85 56,15 63,35 71,14 80,14 89,14 99,94 112,1 126,5 142,7 160,7 178,7
Not recommended
20,0      49,45 55,45 62,45 70,45 79,14 89,14 99,14 111,1 124,7 140,7 158,7 178,7 198,7
Ratio width/thickness over 8:1
22,4       62,17 70,01 78,97 88,74 99,94 111,1 124,6 139,8 157,7 177,9 200,3 222,7
25,0        78,20 88,20 99,14 111,6 124,1 139,1 156,2 176,2 198,7 223,7 248,7
28,0         98,85 111,1 125,1 139,1 155,9 175,1 197,5 222,7 250,7 278,7
31,5          125,1 140,9 156,6 175,5 197,1 222,3 250,7 282,2 313,7
*
0,5 × nominal thickness
Width
– 12 – IEC 60317-0-2:2020 © IEC 2020
Table 3 – Corner radii
Nominal thickness of conductor
Corner
radius
mm
Up to and including mm
Over
– 1,00 0,5 × nominal thickness
*
1,00 1,60 0,50
**
1,60 2,24 0,65
2,24 3,55 0,80
3,55 5,60 1,00
5,60 10,00 1,25
If agreed between purchaser and supplier, the corner radii for wires with a width
greater than 4,8 mm may be:
* 0,5 mm × t, where t is the nominal thickness of the conductor;
** 0,80 mm.
4.4 Increase in dimensions due to the insulation and the bonding layer
4.4.1 Enamelled wires without a bonding layer
The increase in width or thickness due to the insulation shall be as given in Table 4.
Table 4 – Increases in dimensions
Grade Increase in dimensions
mm
Minimum Nominal Maximum
1 0,06 0,085 0,11
2 0,12 0,145 0,17
4.4.2 Enamelled wires with a bonding layer
The increase in dimensions due to the bonding layer for grades 1B and 2B shall be
(0,04 ± 0,01) mm.
4.5 Overall dimensions
4.5.1 Nominal overall dimensions
4.5.1.1 Nominal overall dimensions without a bonding layer
The nominal overall dimensions shall be calculated as the sum of the nominal bare conductor
and the nominal increase in dimension due to the insulation.
4.5.1.2 Nominal overall dimensions with a bonding layer
The nominal overall dimensions shall be calculated as the sum of the nominal bare conductor,
the nominal increase in dimension due to the insulation, and the nominal increase in
dimension due to the bonding layer.

4.5.2 Minimum overall dimensions
4.5.2.1 Minimum overall dimensions without a bonding layer
The minimum overall dimensions shall be calculated as the sum of the minimum bare
conductor and the minimum increase in dimension due to the insulation.
4.5.2.2 Minimum overall dimensions with a bonding layer
The minimum overall dimensions shall be calculated as the sum of the minimum bare
conductor, the minimum increase in dimension due to the insulation, and the minimum
increase in dimension due to the bonding layer.
4.5.3 Maximum overall dimensions
4.5.3.1 Maximum overall dimensions without a bonding layer
The maximum overall dimensions shall be calculated as the sum of the maximum bare
conductor and the maximum increase in dimension due to the insulation.
4.5.3.2 Maximum overall dimensions with a bonding layer
The maximum overall dimensions shall be calculated as the sum of the maximum bare
conductor, the maximum increase in dimension due to the insulation, and the maximum
increase in dimension due to the bonding layer.
5 Electrical resistance
The copper rod being used shall comply with at least one of EN 1977, ISO 1190-1 or ASTM
B49.
The resistance of the wire shall be expressed as the DC resistance at 20 °C. The method
used shall provide an accuracy of 0,5 %.
The maximum value of resistance shall be not greater than the value calculated for the
minimum tolerated cross-sectional area of the conductor resulting from the minimum
dimensions in thickness and width and the maximum for the corner radius, and with a
resistivity given in Table 6.
One measurement shall be made.
6 Elongation
The percentage elongation after fracture shall be measured according to Clause 20 of
ISO 6892-1:2016. When the nominal proof strength, plastic extension is not specified or a
nominal proof strength, plastic extension of 80 N/mm is required, the limits of Table 5 apply.
Otherwise, the measurement is performed for reference only.
Table 5 – Percentage elongation after fracture
Nominal thickness of the conductor Minimum elongation
mm %
Over Up to and including
– 2,50 30
2,50 5,60 32
5,60 10,00 35
– 14 – IEC 60317-0-2:2020 © IEC 2020
When the value of nominal proof strength, plastic extension is specified, the measured proof
strength shall be within the tolerances given in Table 6.
Table 6 – Proof strength and resistivity
Proof strength Maximum
resistivity
Nominal value Tolerance
−2 2 −1
N⋅mm Ω·mm ·m
80 −0 / +30 % 1/58
120 −0 / +20 % 1/58
150 −0 / +20 % 1/58
180 −0 / +20 % 1/57,5
The proof strength, plastic extension shall be measured at the specified percentage of plastic
extension, with the method described in Clause 13 of ISO 6892-1:2016; if not otherwise
specified, the percentage shall be 0,2 % (R ).
p0,2
If required by the customer, the test shall be performed according to Clause 10 of
ISO 6892‑1:2016. Otherwise, the test shall be performed as described in IEC 60851-3.
−2
7 Springiness (applicable to nominal proof strength ≤ 80 N·mm )
The wire shall not exceed the maximum springback of 5°.
8 Flexibility and adherence
8.1 Mandrel winding test
The coating shall show no crack after the wire has been bent flatwise and edgewise on a
mandrel with a diameter as specified in Table 7.
Table 7 – Mandrel winding
Wire bent on Mandrel diameter
Width Sizes up to and including 10 mm 4 × width
Sizes over 10 mm 5 × width
Thickness All sizes 4 × thickness

8.2 Adherence test
The wire shall be stretched by 15 % or to the breaking point, whichever is less. The distance
of loss of adherence shall be less than 1 × width.
9 Heat shock
The coating shall show no crack after the wire has been bent flatwise on a mandrel with a
diameter of six times the thickness.
The minimum heat shock temperature is given in the relevant specification sheet.

10 Cut-through
Test requirement under consideration.
11 Resistance to abrasion
Test inappropriate.
12 Resistance to solvents
Using a pencil of hardness "H" and standard solvent, the coating shall not be removed.
13 Breakdown voltage
When tested at room temperature, at least four of the five specimens tested shall not break
down at a voltage less than or equal to that given in Table 8, and the fifth shall not break
down at less than 50 % of the values specified.
When required by the purchaser, the wire shall be tested at elevated temperature.
The elevated temperature is given in the relevant specification sheet.
Table 8 – Breakdown voltage
Grade Minimum breakdown voltage (RMS)
V
Without bonding layer With bonding layer
Room temperature Elevated temperature Room temperature Elevated temperature
1 1 000 750 1 500 1 000
2 2 000 1 500 2 500 2 000
14 Continuity of insulation
Test inappropriate.
15 Temperature index
The test shall be carried out on a rectangular wire in accordance with IEC 60172, unless
otherwise agreed between the purchaser and the supplier.
When required by a purchaser, the supplier of the enamelled wire shall supply evidence that
the wire meets the requirements for the temperature index.
NOTE 1 The temperature index requirement based on an extrapolated life of 20 000 h relates to enamelled wires
tested unvarnished and not as part of an insulation system.
NOTE 2 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.
– 16 – IEC 60317-0-2:2020 © IEC 2020
16 Resistance to refrigerants
Test inappropriate.
17 Solderability
Test inappropriate.
18 Heat or solvent bonding
For requirements, the relevant specification sheet applies.
19 Dielectric dissipation factor
For requirements, the relevant specification sheet applies.
20 Resistance to transformer oil
For requirements, the relevant specification sheet applies.
21 Loss of mass
Test inappropriate.
23 Pin hole test
Test inappropriate.
30 Packaging
The kind of packaging may influence certain properties of the wire, for example springiness
and proof strength. Therefore, the kind of packaging for example, the type of spool, shall be
agreed between the purchaser and the supplier.
The wire shall be evenly and compactly wound on spools or placed in containers. No spool or
container shall contain more than one length of wire unless agreed to by the purchaser and
the supplier. Marking of the label when there is more than one length and/or identification of
the separate lengths in the package shall be agreed to by the purchaser and the supplier.
Where wires are delivered in coils, the dimensions and the maximum weights of such coils
shall be agreed between the purchaser and the supplier. Any additional protection for coils
shall also be agreed between the purchaser and the supplier.
Labels shall be attached to each packaging unit as agreed between the supplier and the user
and shall include the following information:
a) manufacturer's name and/or trademark;
b) type of wire and insulation, for instance trade name and/or IEC specification number;
c) having a bonding layer (if any);
d) nominal proof strength;
e) net mass of wire;
f) nominal dimension(s) of wire and grade of insulation;
g) date of manufacture.
– 18 – IEC 60317-0-2:2020 © IEC 2020
Annex A
(informative)
Nominal cross-sectional areas for preferred and intermediate sizes
Table A.1 provides nominal cross-sectional areas for preferred and intermediate sizes of
rectangular copper bare conductors, from which the user may select intermediate sizes only
for technical reasons.
Table A.1 – Nominal cross-sectional areas
Nominal Nominal Corner Nominal Nominal Nominal Corner Nominal
width thickness radius cross- width thickness radius cross-
section section
area area
2 2
mm mm mm mm mm mm mm mm
2,00 0,80 * 1,463 2,50 1,18 0,5 2,735
0,85 * 1,545  1,25 0,5 2,910
0,90 * 1,626  1,32 0,5 3,085
0,95 * 1,706  1,40 0,5 3,285
1,00 * 1,785  1,50 0,5 3,535
1,60 0,5 3,785
1,06 0,5 1,905
1,12 0,5 2,025  1,70 0,65 3,887
1,18 0,5 2,145  1,80 0,65 4,137
1,25 0,5 2,285
1,32 0,5 2,425 2,65 0,80 * 1,983
1,40 0,5 2,585  0,90 * 2,211
1,00 * 2,435
2,12 0,80 * 1,559
0,90 * 1,734  1,12 0,5 2,753
1,00 * 1,905  1,25 0,5 3,098
1,40 0,5 3,495
1,12 0,5 2,160  1,60 0,5 4,025
1,25 0,5 2,435
1,40 0,5 2,753  1,80 0,65 4,407

2,24 0,80 * 1,655 2,80 0,80 * 2,103
0,85 * 1,749  0,85 * 2,225
0,90 * 1,842  0,90 * 2,346
0,95 * 1,934  0,95 * 2,466
1,00 * 2,025  1,00 * 2,585
1,06 0,5 2,160  1,06 0,5 2,753
1,12 0,5 2,294  1,12 0,5 2,921
1,18 0,5 2,429  1,18 0,5 3,089
1,25 0,5 2,585  1,25 0,5 3,285
1,32 0,5 2,742  1,32 0,5 3,481
1,40 0,5 2,921  1,40 0,5 3,705
1,50 0,5 3,145  1,50 0,5 3,985
1,60 0,5 3,369  1,60 0,5 4,265

2,36 0,80 * 1,751  1,70 0,65 4,397
0,90 * 1,950  1,80 0,65 4,677
1,00 * 2,145  1,90 0,65 4,957
2,00 0,65 5,237
1,12 0,5 2,429
1,25 0,5 2,735 3,00 0,80 * 2,263
1,40 0,5 3,089  0,90 * 2,526
1,60 0,5 3,561  1,00 * 2,785
2,50 0,80 * 1,863  1,12 0,5 3,145
0,85 * 1,970  1,25 0,5 3,535
0,90 * 2,076  1,40 0,5 3,985
0,95 * 2,181  1,60 0,5 4,585
1,00 * 2,285
1,80 0,65 5,037
1,06 0,5 2,435  2,00 0,65 5,637
1,12 0,5 2,585
* 0,5 × nominal thickness
Nominal Nominal Corner Nominal Nominal Nominal Corner Nominal
width thickness radius cross- width thickness radius cross-
section section
area area
2 2
mm mm mm mm mm mm mm mm
3,15 0,80 * 2,383 3,75 0,80 * 2,863
0,85 * 2,522  0,90 * 3,201
0,90 * 2,661  1,00 * 3,535
0,95 * 2,799
1,00 * 2,935  1,12 0,5 3,985
1,25 0,5 4,473
1,06 0,5 3,124  1,40 0,5 5,035
1,12 0,5 3,313  1,60 0,5 5,785
1,18 0,5 3,502
1,25 0,5 3,723  1,80 0,65 6,387
1,32 0,5 3,943  2,00 0,65 7,137
1,40 0,5 4,195  2,24 0,65 8,037
1,50 0,5 4,510
1,60 0,5 4,825  2,50 0,8 8,826

1,70 0,65 4,992 4,00 0,80 * 3,063
1,80 0,65 5,307  0,85 * 3,245
1,90 0,65 5,622  0,90 * 3,426
2,00 0,65 5,937  0,95 * 3,606
2,12 0,65 6,315  1,00 * 3,785
2,24 0,65 6,693
1,06 0,5 4,025
3,35 0,80 * 2,543  1,12 0,5 4,265
0,90 * 2,841  1,18 0,5 4,505
1,00 * 3,135  1,25 0,5 4,785
1,32 0,5 5,065
1,12 0,5 3,537  1,40 0,5 5,385
1,25 0,5 3,973  1,50 0,5 5,785
1,40 0,5 4,475  1,60 0,5 6,185
1,60 0,5 5,145
1,70 0,65 6,437
1,80 0,65 5,667  1,80 0,65 6,837
2,00 0,65 6,337  1,90 0,65 7,237
2,24 0,65 7,141  2,00 0,65 7,637
2,12 0,65 8,117
3,55 0,80 * 2,703  2,24 0,65 8,597
0,85 * 2,862
0,90 * 3,021  2,36 0,8 8,891
0,95 * 3,179  2,50 0,8 9,451
1,00 * 3,335  2,65 0,8 10,05
2,80 0,8 10,65
1,06 0,5 3,548
1,12 0,5 3,761 4,25 0,80 * 3,263
1,18 0,5 3,974  0,90 * 3,651
1,25 0,5 4,223  1,00 * 4,035
1,32 0,5 4,471
1,40 0,5 4,755  1,12 0,5 4,545
1,50 0,5 5,110  1,25 0,5 5,098
1,60 0,5 5,465  1,40 0,5 5,735
1,60 0,5 6,585
1,70 0,65 5,672
1,80 0,65 6,027  1,80 0,65 7,287
1,90 0,65 6,382  2,00 0,65 8,137
2,00 0,65 6,737  2,24 0,65 9,157
2,12 0,65 7,163
2,24 0,65 7,589  2,50 0,8 10,08
2,80 0,8 11,35
2,36 0,8 7,829
2,50 0,8 8,326
* 0,5 × nominal thickness
– 20 – IEC 60317-0-2:2020 © IEC 2020
Nominal Nominal Corner Nominal Nominal Nominal Corner Nominal
width thickness radius cross- width thickness radius cross-
section section
area area
2 2
mm mm mm mm mm mm mm mm
4,50 0,80 * 3,463 5,00 1,70 0,65 8,137
0,85 * 3,670  1,80 0,65 8,637
0,90 * 3,876  1,90 0,65 9,137
0,95 * 4,081  2,00 0,65 9,637
1,00 * 4,285  2,12 0,65 10,24
2,24 0,65 10,84
1,06 0,5 4,555
1,12 0,5 4,825  2,36 0,8 11,25
1,18 0,5 5,095  2,50 0,8 11,95
1,25 0,5 5,410  2,65 0,8 12,70
1,32 0,5 5,725  2,80 0,8 13,45
1,40 0,5 6,085  3,00 0,8 14,45
1,50 0,5 6,535  3,15 0,8 15,20
1,60 0,5 6,985  3,35 0,8 16,20
3,55 0,8 17,20
1,70 0,65 7,287
1,80 0,65 7,737 5,30 0,80 * 4,103
1,90 0,65 8,187  0,90 * 4,596
2,00 0,65 8,637  1,00 * 5,085
2,12 0,65 9,177
2,24 0,65 9,717  1,12 0,5 5,721
1,25 0,5 6,410
2,36 0,8 10,07  1,40 0,5 7,205
2,50 0,8 10,70  1,60 0,5 8,265
2,65 0,8 11,38
2,80 0,8 12,05  1,80 0,65 9,177
3,00 0,8 12,95  2,00 0,65 10,24
3,15 0,8 13,63  2,24 0,65 11,51

4,75 0,80 * 3,663  2,50 0,8 12,70
0,90 * 4,101  2,80 0,8 14,29
1,00 * 4,535  3,15 0,8 16,15
3,55 0,8 18,27
1,12 0,5 5,105
1,25 0,5 5,723 5,60 0,80 * 4,343
1,40 0,5 6,435  0,85 * 4,605
1,60 0,5 7,385  0,90 * 4,866
0,95 * 5,126
1,80 0,65 8,187  1,00 * 5,385
2,00 0,65 9,137
2,24 0,65 10,28  1,06 0,5 5,721
1,12 0,5 6,057
2,50 0,8 11,33  1,18 0,5 6,393
2,80 0,8 12,75  1,25 0,5 6,785
3,15 0,8 14,41  1,32 0,5 7,177
1,40 0,5 7,625
5,00 0,80 * 3,863  1,50 0,5 8,185
0,85 * 4,095  1,60 0,5 8,745
0,90 * 4,326
0,95 * 4,556  1,70 0,65 9,157
1,00 * 4,785  1,80 0,65 9,717
1,90 0,65 10,28
1,06 0,5 5,085  2,00 0,65 10,84
1,12 0,5 5,385  2,12 0,65 11,51
1,18 0,5 5,685  2,24
...