IEC 60317-0-3:2024

IEC 60317-0-3 ®
Edition 4.0 2024-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –
Part 0-3: General requirements – Enamelled round aluminium wire

Spécifications pour types particuliers de fils de bobinage –
Partie 0-3: Exigences générales – Fil de section circulaire en aluminium émaillé
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IEC 60317-0-3 ®
Edition 4.0 2024-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –

Part 0-3: General requirements – Enamelled round aluminium wire

Spécifications pour types particuliers de fils de bobinage –

Partie 0-3: Exigences générales – Fil de section circulaire en aluminium émaillé

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10  ISBN 978-2-8322-9617-2

– 2 – IEC 60317-0-3:2024 © IEC 2024
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 . 8
3.2.1 Methods of test . 8
3.2.2 Winding wire . 9
3.3 Appearance . 9
4 Dimensions. 9
4.1 Conductor diameter . 9
4.2 Out of roundness of conductor . 11
4.3 Minimum increase in diameter due to the insulation and the bonding layer . 11
4.3.1 Enamelled wires without a bonding layer . 11
4.3.2 Enamelled wires with a bonding layer . 11
4.4 Maximum overall diameter . 11
4.4.1 Enamelled wires without a bonding layer . 11
4.4.2 Enamelled wires with a bonding layer . 12
5 Electrical resistance . 12
6 Elongation . 12
7 Springiness . 12
8 Flexibility and adherence . 12
8.1 Mandrel winding test (nominal conductor diameters up to and including
1,600 mm) . 12
8.2 Stretching test (nominal conductor diameters over 1,600 mm) . 13
8.3 Jerk test (nominal conductor diameters up to and including 1,000 mm) . 13
8.4 Peel test (nominal conductor diameters over 1,000 mm) . 13
9 Heat shock . 13
9.1 Nominal conductor diameters up to and including 1,600 mm . 13
9.2 Nominal conductor diameters over 1,600 mm . 13
10 Cut-through . 13
11 Resistance to abrasion . 13
12 Resistance to solvents . 13
13 Breakdown voltage . 14
13.1 General . 14
13.2 Nominal conductor diameters up to and including 2,500 mm . 14
13.3 Nominal conductor diameters over 2,500 mm . 14
14 Continuity of insulation (nominal conductor diameters up to and including
1,600 mm) . 15
15 Temperature index . 15
16 Resistance to refrigerants . 15
17 Solderability . 15
18 Heat or solvent bonding . 15
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) Dimensions for intermediate nominal conductor diameters
(R 40) . 17
A.1 General . 17
A.2 Enamelled wires without a bonding layer. 17
A.3 Enamelled wires with a bonding layer . 18
Annex B (normative) Method for the calculation of linear resistance . 19
Annex C (informative) Resistance . 20
Bibliography . 21

Table 1 – Dimensions of enamelled wires (R 20). 10
Table 2 – Dimensions of enamelled wires with a bonding layer (R 20) . 11
Table 3 – Elongation . 12
Table 4 – Mandrel winding . 12
Table 5 – Heat shock . 13
Table 6 – Breakdown voltage . 14
Table 7 – Breakdown voltage . 15
Table 8 – Continuity of insulation . 15
Table A.2 – Dimensions of enamelled wires with a bonding layer (R 40) . 18
Table C.1 – Electrical resistances . 20

– 4 – IEC 60317-0-3:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 0-3: General requirements – Enamelled round aluminium wire

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
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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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not 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.
IEC 60317-0-3 has been prepared by IEC technical committee 55: Winding wires. It is an
International Standard.
This fourth edition cancels and replaces the third edition published in 2008, Amendment 1:2013
and Amendment 2:2019. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Revision to Clause 7, designating the test as inappropriate;
b) Revision to Clause 10, designating the test as inappropriate.

The text of this International Standard is based on the following documents:
Draft Report on voting
55/2049/FDIS 55/2054/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
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 webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
– 6 – IEC 60317-0-3:2024 © IEC 2024
INTRODUCTION
The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed
that compliance with this document may involve the use of a patent. IEC takes no position
concerning the evidence, validity, and scope of this patent right.
The holder of this patent right has assured IEC that s/he is willing to negotiate licences under
reasonable and non-discriminatory terms and conditions with applicants throughout the world.
In this respect, the statement of the holder of this patent right is registered with IEC. Information
may be obtained from the patent database available at patents.iec.ch/.
Attention is drawn to the possibility that some of the elements of this document may be the
subject of patent rights other than those in the patent database. IEC shall not be held
responsible for identifying any or all such patent rights.
This part of IEC 60317 is one of a series that deals with insulated wires used for windings in
electrical equipment. The series has three groups describing
1) winding wires and test methods (IEC 60851);
2) specifications for particular types of winding wires (IEC 60317);
3) packaging of winding wires (IEC 60264).

SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 0-3: General requirements – Enamelled round aluminium wire

1 Scope
This part of IEC 60317 specifies the general requirements of enamelled round aluminium
winding wires with or without a bonding layer.
The range of nominal conductor diameters is given in 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 60317 (all parts), Specifications for particular types of winding wires
IEC 60851 (all parts), Winding wires – Test methods
ISO 3, Preferred numbers – Series of preferred numbers
ASTM B233-97, Standard Specification for Aluminum 1350 Drawing Stock for Electrical
Purposes
EN 1715-2, Aluminium and aluminium alloys – Drawing stock – Part 2: Specific requirements
for electrical applications
3 Terms, definitions, general notes, and appearance
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
bonding layer
material which is deposited on an enamelled wire, and which has the specific function of
bonding wires together
– 8 – IEC 60317-0-3:2024 © IEC 2024
3.1.2
class
thermal performance of a wire expressed by the temperature index and the heat shock
temperature
3.1.3
coating
material which is deposited on a conductor or wire by a suitable means and then dried and/or
cured
3.1.4
conductor
bare metal after removal of the insulation
3.1.5
crack
opening in the insulation which exposes the conductor to view at the stated magnification
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
3.1.8
insulation
coating or covering on the conductor with the specific function of withstanding voltage
3.1.9
nominal conductor diameter
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
3.2 General notes
3.2.1 Methods of test
All methods of test to be used for this part of IEC 60317, independent of the class of wire, are
given in the IEC 60851 series.
The clause numbers used in this document are identical with the respective test numbers of the
IEC 60851 series.
In case of inconsistencies between the publication on methods of test and this document,
IEC 60317-0-3 shall prevail.
Where no specific range of nominal conductor diameters is given for a test, the test applies to
all nominal conductor diameters 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 of 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
See the relevant specification sheet.
In addition, 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 diameter in millimetres;
• grade.
EXAMPLE IEC 60317-1 – 0,500 Grade 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, as wound on the original spool or reel.
When agreed upon between the user and supplier, examination using 6× to 10× magnification
shall be used for wires with a nominal diameter less than 0,10 mm.
4 Dimensions
4.1 Conductor diameter
The series of preferred nominal conductor diameters shall correspond to series R 20 according
to ISO 3. The actual values and their tolerances are given in Table 1 and Table 2.
The series of intermediate diameters from which the user may select intermediate nominal
conductor diameters, when required for technical reasons, shall correspond to series R 40
according to ISO 3. The actual values and their tolerances are given in Annex A.
The conductor diameter shall not differ from the nominal diameter by more than the limit given
in Table 1 or Table 2.
For intermediate nominal conductor diameters, the minimum increase figure corresponding to
the next larger nominal conductor diameter applies.

– 10 – IEC 60317-0-3:2024 © IEC 2024
Table 1 – Dimensions of enamelled wires (R 20)
Nominal Conductor Minimum increase due to the insulation Maximum overall diameter
conductor tolerance
diameter
± mm mm
mm mm Grade 1 Grade 2 Grade 3 Grade 1 Grade 2 Grade 3
0,250 0,004 0,017 0,032 0,048 0,281 0,297 0,312
0,280 0,004 0,018 0,033 0,050 0,312 0,329 0,345
0,315 0,004 0,019 0,035 0,053 0,349 0,367 0,384
0,355 0,004 0,020 0,038 0,057 0,392 0,411 0,428
0,400 0,005 0,021 0,040 0,060 0,439 0,459 0,478
0,450 0,005 0,022 0,042 0,064 0,491 0,513 0,533
0,500 0,005 0,024 0,045 0,067 0,544 0,566 0,587
0,560 0,006 0,025 0,047 0,071 0,606 0,630 0,653
0,630 0,006 0,027 0,050 0,075 0,679 0,704 0,728
0,710 0,007 0,028 0,053 0,080 0,762 0,789 0,814
0,800 0,008 0,030 0,056 0,085 0,855 0,884 0,911
0,900 0,009 0,032 0,060 0,090 0,959 0,989 1,018
1,000 0,010 0,034 0,063 0,095 1,062 1,094 1,124
1,120 0,011 0,034 0,065 0,098 1,184 1,217 1,248
1,250 0,013 0,035 0,067 0,100 1,316 1,349 1,381
1,400 0,014 0,036 0,069 0,103 1,468 1,502 1,535
1,600 0,016 0,038 0,071 0,107 1,670 1,706 1,740
1,800 0,018 0,039 0,073 0,110 1,872 1,909 1,944
2,000 0,020 0,040 0,075 0,113 2,074 2,112 2,148
2,240 0,022 0,041 0,077 0,116 2,316 2,355 2,392
2,500 0,025 0,042 0,079 0,119 2,578 2,618 2,656
2,800 0,028 0,043 0,081 0,123 2,880 2,922 2,961
3,150 0,032 0,045 0,084 0,127 3,233 3,276 3,316
3,550 0,036 0,046 0,086 0,130 3,635 3,679 3,721
4,000 0,040 0,047 0,089 0,134 4,088 4,133 4,176
4,500 0,045 0,049 0,092 0,138 4,591 4,637 4,681
5,000 0,050 0,050 0,094 0,142 5,093 5,141 5,186
NOTE The dimensions of intermediate nominal conductor diameters for R 40 series are given in Annex A.

Table 2 – Dimensions of enamelled wires with a bonding layer (R 20)
Nominal Conductor Minimum increase Minimum Maximum overall diameter
conductor tolerance underlying coating increase
diameter bonding layer
± mm mm
mm mm Grade 1B Grade 2B mm Grade 1B Grade 2B
0,250 0,004 0,017 0,032 0,013 0,300 0,316
0,280 0,004 0,018 0,033 0,013 0,331 0,348
0,315 0,004 0,019 0,035 0,014 0,369 0,387
0,355 0,004 0,020 0,038 0,015 0,413 0,432
0,400 0,005 0,021 0,040 0,016 0,461 0,481
0,450 0,005 0,022 0,042 0,016 0,514 0,536
0,500 0,005 0,024 0,045 0,017 0,568 0,590
0,560 0,006 0,025 0,047 0,017 0,630 0,654
0,630 0,006 0,027 0,050 0,018 0,704 0,729
0,710 0,007 0,028 0,053 0,019 0,788 0,815
0,800 0,008 0,030 0,056 0,020 0,882 0,911
0,900 0,009 0,032 0,060 0,020 0,987 1,017
1,000 0,010 0,034 0,063 0,021 1,091 1,123
1,120 0,011 0,034 0,065 0,022 1,214 1,247
1,250 0,013 0,035 0,067 0,022 1,346 1,379
1,400 0,014 0,036 0,069 0,023 1,499 1,533
1,600 0,016 0,038 0,071 0,023 1,702 1,738
1,800 0,018 0,039 0,073 0,024 1,905 1,942
2,000 0,020 0,040 0,075 0,025 2,108 2,146
NOTE The dimensions of intermediate nominal conductor diameters for R 40 series are given in Annex A.

4.2 Out of roundness of conductor
The difference between the minimum and maximum diameter, at any one point, shall not be
more than the figure given in column 2 of Table 1 or Table 2.
4.3 Minimum increase in diameter due to the insulation and the bonding layer
4.3.1 Enamelled wires without a bonding layer
The minimum increase in diameter due to the insulation shall not be less than the values given
in Table 1.
4.3.2 Enamelled wires with a bonding layer
The minimum increase in diameter due to the insulation including the bonding layer shall not
be less than the values given in Table 2.
4.4 Maximum overall diameter
4.4.1 Enamelled wires without a bonding layer
The maximum overall diameter shall not exceed the values given in Table 1.

– 12 – IEC 60317-0-3:2024 © IEC 2024
4.4.2 Enamelled wires with a bonding layer
The maximum overall diameter shall not exceed the values given in Table 2.
5 Electrical resistance
The aluminium rod being used shall comply with EN 1715-2 and ASTM B233-97.
No resistance values are specified.
By agreement between purchaser and supplier, resistance measurements may be made for
nominal conductor diameters up to and including 1,000 mm. In case of such an agreement, the
resistance at 20 °C shall be within the limits given in Annex C.
6 Elongation
The elongation at fracture and tensile strength shall not be less than the value given in Table 3.
Table 3 – Elongation
Nominal conductor diameter Elongation minimum Tensile strength minimum
mm
-2
Over Up to and including %
N·mm
– 0,400 10 90
0,400 1,000 12 90
1,000 2,000 15 80
2,000 5,000 15 70
7 Springiness
Test inappropriate.
8 Flexibility and adherence
8.1 Mandrel winding test (nominal conductor diameters up to and including
1,600 mm)
The coating shall show no crack after the wire has been wound on a mandrel as specified in
Table 4.
Table 4 – Mandrel winding
Nominal conductor diameter
mm Mandrel diameter
Over Up to and including
a
– 1,600
3d
a
d is the nominal diameter of the wire.

8.2 Stretching test (nominal conductor diameters over 1,600 mm)
The coating shall show no crack after the wire has been elongated 15 %.
8.3 Jerk test (nominal conductor diameters up to and including 1,000 mm)
The coating shall show no crack or loss of adhesion.
8.4 Peel test (nominal conductor diameters over 1,000 mm)
Test appropriate but no requirements specified.
9 Heat shock
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 5. The
minimum heat shock temperature is given in the relevant specification sheet.
Table 5 – Heat shock
Nominal conductor diameter
mm Mandrel diameter
Over Up to and including
a
– 1,600
3d
a
d is the nominal diameter of the wire.

9.2 Nominal conductor diameters over 1,600 mm
The coating shall show no crack after having been elongated 15 %. The minimum heat shock
temperature is given in the relevant specification sheet.
10 Cut-through
Test inappropriate.
11 Resistance to abrasion
For requirements, see the relevant specification sheet.
12 Resistance to solvents
Following immersion in standard solvent, the coating shall not be removed using a pencil of
hardness "H".
Using a pencil of hardness "H" the coating shall not be removed.

– 14 – IEC 60317-0-3:2024 © IEC 2024
13 Breakdown voltage
13.1 General
The wire shall meet the requirements given in 13.2 and 13.3, respectively, when tested at room
temperature and at elevated temperature when this is required by the purchaser.
The elevated temperature is given in the relevant specification sheet.
13.2 Nominal conductor diameters up to and including 2,500 mm
At least four of the five specimens tested shall not break down at a voltage less than or equal
to that given in Table 6.
For intermediate nominal conductor diameters, the figure of the next larger nominal conductor
diameter applies.
Table 6 – Breakdown voltage
Nominal Minimum breakdown voltage (RMS value)
conductor
V
diameter
mm Grade 1 and grade 1B Grade 2 and grade 2B Grade 3
Room Elevated Room Elevated Room Elevated
temperature temperature temperature temperature temperature temperature
0,250 2 100 1 600 3 900 2 900 5 500 4 100
0,280 2 200 1 700 4 000 3 000 5 800 4 400
0,315 2 200 1 700 4 100 3 100 6 100 4 600
0,355 2 300 1 700 4 300 3 200 6 400 4 800
0,400 2 300 1 700 4 400 3 300 6 600 5 000
0,450 2 300 1 700 4 400 3 300 6 800 5 100
0,500 2 400 1 800 4 600 3 500 7 000 5 300
0,560 2 500 1 900 4 600 3 500 7 100 5 300
0,630 2 600 2 000 4 800 3 600 7 100 5 300
0,710 2 600 2 000 4 800 3 600 7 200 5 400
0,800 2 600 2 000 4 900 3 700 7 400 5 600
0,900 2 700 2 000 5 000 3 700 7 600 5 700
1,000
up to and
2 700 2 000 5 000 3 800 7 600 5 700
including
2,500
13.3 Nominal conductor diameters over 2,500 mm
At least four of the five specimens tested shall not break down at a voltage less than or equal
to that given in Table 7.
Table 7 – Breakdown voltage
Nominal Minimum breakdown voltage (RMS value)
conductor
V
diameter
mm Grade 1 and grade 1B Grade 2 and grade 2B Grade 3
Room Elevated Room Elevated Room Elevated
temperature temperature temperature temperature temperature temperature
Greater than 1 300 1 000 2 500 1 900 3 800 2 900
2,500 up to
and including
5,000
14 Continuity of insulation (nominal conductor diameters up to and including
1,600 mm)
The number of faults per 30 m of wire shall not exceed the values given in Table 8.
Table 8 – Continuity of insulation
Nominal conductor diameter Maximum number of faults per 30 m
mm
Over Up to and including Grade 1 and grade 1B Grade 2 and grade 2B Grade 3
– 1,600 25 10 5
15 Temperature index
The test shall be carried out in accordance with IEC 60172.
The temperature index shall not be less than that given in the relevant specification sheet and
the time to failure at the lowest test temperature shall not be less than 5 000 h.
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 The temperature index based on an extrapolated life of 20 000 h relates to enamelled wires tested
unvarnished and not as part of an insulation system. 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.
16 Resistance to refrigerants
For requirements, see the relevant specification sheet.
17 Solderability
Test inappropriate.
18 Heat or solvent bonding
For requirements, see the relevant specification sheet.

– 16 – IEC 60317-0-3:2024 © IEC 2024
19 Dielectric dissipation factor
For requirements, see the relevant specification sheet.
20 Resistance to transformer oil
For requirements, see the relevant specification sheet.
21 Loss of mass
For requirements, see the relevant specification sheet.
23 Pin hole test
Requirements under consideration.
30 Packaging
The kind of packaging can influence certain properties of the wire, for example springback.
Therefore, the kind of packaging, for example the type of spool, shall be agreed between
purchaser and 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 purchaser and 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 purchaser and supplier.
Where wires are delivered in coils, the dimensions and the maximum weights of such coils shall
be agreed between purchaser and supplier. Any additional protection for coils shall also be
agreed between purchaser and supplier.
Labels shall be attached to each packaging unit as agreed between supplier and user and shall
include the following information:
a) manufacturer's name and/or trade mark;
b) type of wire and insulation, for instance trade name and/or IEC specification number;
c) net mass of wire;
d) nominal dimension(s) of wire and grade of insulation;
e) date of manufacture.
Annex A
(informative)
Dimensions for intermediate nominal conductor diameters (R 40)
A.1 General
This Annex A covers those intermediate nominal conductor diameters from which the user may
select intermediate sizes only for technical reasons.
Minimum overall diameter requirements may be used in lieu of the maximum overall diameters
in Table A.1 or Table A.2 provided they are based on the minimum increases.
A.2 Enamelled wires without a bonding layer
Table A.1 – Dimensions of enamelled wires (R 40)
Nominal Conductor Minimum increase due to the Maximum overall diameter
conductor tolerance insulation
diameter
± mm mm
mm mm Grade 1 Grade 2 Grade 3 Grade 1 Grade 2 Grade 3
0,265 0,004 0,018 0,033 0,050 0,297 0,314 0,330
0,300 0,004 0,019 0,035 0,053 0,334 0,352 0,369
0,335 0,004 0,020 0,038 0,057 0,372 0,391 0,408
0,375 0,005 0,021 0,040 0,060 0,414 0,434 0,453
0,425 0,005 0,022 0,042 0,064 0,466 0,488 0,508
0,475 0,005 0,024 0,045 0,067 0,519 0,541 0,562
0,530 0,006 0,025 0,047 0,071 0,576 0,600 0,623
0,600 0,006 0,027 0,050 0,075 0,649 0,674 0,698
0,670 0,007 0,028 0,053 0,080 0,722 0,749 0,774
0,750 0,008 0,030 0,056 0,085 0,805 0,834 0,861
0,850 0,009 0,032 0,060 0,090 0,909 0,930 0,968
0.950 0,010 0,034 0,063 0,095 1,012 1,044 1,074
1.060 0,011 0,034 0,065 0,098 1,124 1,157 1,188
1.180 0,012 0,035 0,067 0,100 1,246 1,279 1,311
1.320 0,013 0,036 0,069 0,103 1,388 1,422 1,455
1.500 0,015 0,038 0,071 0,107 1,570 1,606 1,640
1.700 0,017 0,039 0,073 0,110 1,772 1,809 1,844
1.900 0,019 0,040 0,075 0,113 1,974 2,012 2,048
2.120 0,021 0,041 0,077 0,116 2,196 2,235 2,272
2.360 0,024 0,042 0,079 0,119 2,438 2,478 2,516
2.650 0,027 0,043 0,081 0,123 2,730 2,772 2,811
3.000 0,030 0,045 0,084 0,127 3,083 3,126 3,166
3.350 0,034 0,046 0,086 0,130 3,435 3,479 3,521
3.750 0,038 0,047 0,089 0,134 3,838 3,883 3,926
4.250 0,043 0,049 0,092 0,138 4,341 4,387 4,431
4.750 0,048 0,050 0,094 0,142 4,843 4,891 4,936

– 18 – IEC 60317-0-3:2024 © IEC 2024
A.3 Enamelled wires with a bonding layer
Table A.2 – Dimensions of enamelled wires with a bonding layer (R 40)
Nominal Conductor Minimum increase due to Minimum Maximum overall
conductor tolerance the insulation increase diameter
diameter due to
± mm mm
bonding
layer
mm mm Grade 1B Grade 2B mm Grade 1B Grade 2B
0,265 0,004 0,018 0,033 0,013 0,316 0,333
0,300 0,004 0,019 0,035 0,014 0,354 0,372
0,335 0,004 0,020 0,038 0,015 0,393 0,412
0,375 0,005 0,021 0,040 0,016 0,436 0,456
0,425 0,005 0,022 0,042 0,016 0,489 0,511
0,475 0,005 0,024 0,045 0,017 0,543 0,565
0,530 0,006 0,025 0,047 0,017 0,600 0,624
0,600 0,006 0,027 0,050 0,018 0,674 0,699
0,670 0,007 0,028 0,053 0,019 0,748 0,775
0,750 0,008 0,030 0,056 0,020 0,832 0,861
0,850 0,009 0,032 0,060 0,020 0,937 0,967
0.950 0,010 0,034 0,063 0,021 1,041 1,073
1.060 0,011 0,034 0,065 0,022 1,154 1,187
1.180 0,012 0,035 0,067 0,022 1,276 1,309
1.320 0,013 0,036 0,069 0,023 1,419 1,453
1.500 0,015 0,038 0,071 0,023 1,602 1,638
1.700 0,017 0,039 0,073 0,024 1,805 1,842
1.900 0,019 0,040 0,075 0,025 2,008 2,046

Annex B
(normative)
Method for the calculation of linear resistance
The limits of electrical resistance for nominal conductor diameters up to and including 1,000 mm
are calculated on the following basis:
The minimum and the maximum values of resistance are calculated from the nominal value of
the resistivity by accounting for each conductor diameter the relevant dimensional tolerance.
The linear resistance is calculated from
–1 –1
R = ρ × q (Ω·m )
min min max
–1 –1
R = ρ × q (Ω·m )
max max min
where:
2 –1
ρ = 1/36,2 Ω mm ·m ;
min
2 –1
ρ = 1/35,5 Ω mm ·m ;
max
q is the cross-section of the conductor, in square millimetres.
where
q is the maximum cross-section of the conductor in square millimetres, calculated from
max
the nominal conductor diameter plus the dimensional tolerance;
q is the minimum cross-section of the conductor in square millimetres, calculated from the
min
nominal conductor diameter minus the dimensional tolerance.

– 20 – IEC 60317-0-3:2024 © IEC 2024
Annex C
(informative)
Resistance
The figures for nominal resistance in Table C.1 are given for information only. They are
calculated on the basis of the nominal conductor diameter and a nominal resistivity of
2 –1
1/35,85 Ωmm ⋅m .
The minimum and maximum resistance figures for nominal conductor diameter up to and
including 1,000 mm are derived from calculations made according to Annex B.
Table C.1 – Electrical resistances
Nominal conductor diameter Resistance at 20 °CΩ/m
mm Minimum Nominal Maximum
0,250 0,545 2 0,568 3 0,592 7
0,280 0,436 1 0,453 0 0,470 8
0,315 0,345 6 0,357 9 0,370 8
0,355 0,272 9 0,281 8 0,291 1
0,400 0,214 4 0,222 0 0,229 9
0,450 0,169 9 0,175 4 0,181 1
0,500 0,137 9 0,142 1 0,146 4
0,560 0,109 8 0,113 3 0,116 9
0,630 0,086 95 0,089 48 0,092 11
0,710 0,068 42 0,089 48 0,092 11
0,800 0,053 87 0,070 45 0,072 57
0,900 0,042 57 0,043 85 0,045 18
1,000 0,034 48 0,035 52 0,036 59

Bibliography
IEC 60264 (all parts), Packaging of winding wires
___________
– 22 – IEC 60317-0-3:2024 © IEC 2024
SOMMAIRE
AVANT-PROPOS . 24
INTRODUCTION . 26
1 Domaine d'application . 27
2 Références normatives . 27
3 Termes, définitions, notes générales et aspect .
...