IEC 60317-43:1997+AMD1:2010 CSV

Specifications for particular types of winding wires - Part 43: Aromatic polyimide type wrapped round copper wire, class 240

This consolidated version consists of the first edition (1997) and its amendment 1 (2010). Therefore, no need to order amendment in addition to this publication.

Spécifications pour types particuliers de fils de bobinage - Partie 43: Fil de section circulaire en cuivre recouvert d'un ruban de polyimide aromatique, classe 240

Cette version consolidée comprend la première édition (1997) et son amendement 1 (2010). Il n'est donc pas nécessaire de commander l'amendement avec cette publication.

General Information

• Status: Published
• Publication Date: 07-Jul-2010
• ICS: 29.060.10 - Wires
• ICS: 29.180 - Transformers. Reactors
• Technical Committee: TC 55 - Winding wires
• Current Stage: PPUB - Publication issued
• Start Date: 08-Jul-2010
• Completion Date: 08-Jul-2010

Overview

IEC 60317-43:1997+AMD1:2010 CSV is an international standard published by the International Electrotechnical Commission (IEC) that specifies the requirements for aromatic polyimide tape wrapped round copper winding wire, class 240. This standard consolidates the first edition from 1997 and its amendment from 2010, eliminating the need for separate amendments. The winding wire covered by this standard features copper conductors wrapped with one or two layers of aromatic polyimide tape, designed for high thermal performance and electrical insulation suitable in demanding industrial applications.

Class 240 designates the thermal classification of the wire, ensuring a temperature index of at least 240 °C and a heat shock temperature of at least 260 °C. The standard includes detailed specifications on dimensions, electrical resistance, mechanical properties, insulation characteristics, and packaging requirements - making it crucial for manufacturers and users of electrical winding wires.

Key Topics

• Thermal Class and Performance: Class 240 wires are designed for high-temperature applications, withstanding temperatures up to 240 °C continuously and heat shocks up to 260 °C.
• Construction: The conductor is round copper wire wrapped with aromatic polyimide tape bonded by adhesives such as fluorinated ethylene propylene to provide consistent insulation and physical integrity.
• Dimensions: The standard covers nominal conductor diameters from 1.6 mm to 5.0 mm, with guidelines on insulation thickness and conductor sizes defined according to ISO preferred numbers.
• Electrical and Mechanical Properties:
  • Electrical resistance limits ensure conductivity for effective coil winding.
  • Mechanical tests cover elongation, springiness, flexibility, adherence, and resistance to abrasion and solvents.
• Insulation Integrity and Safety:
  • Breakdown voltage and continuity of insulation are critical to performance under electrical stress.
  • Resistance to heat shock, refrigerants, and transformer oil ensures durability in operational environments.
• Test Methods: Conform to IEC 60851 series, ensuring harmonized testing procedures for the winding wire’s characteristics.
• Marking and Traceability: Identification includes reference IEC 60317-43, conductor diameter, and grade, facilitating international trade and quality control.

Applications

IEC 60317-43 aromatic polyimide tape wrapped copper wires are widely used in:

• Electrical Machines: Motors and generators requiring high thermal resistance winding wires.
• Transformers and Inductors: Components operating at elevated temperatures and requiring robust insulation.
• Aerospace and Automotive Industries: High-performance coil winding in harsh thermal environments.
• Medical Devices & Industrial Equipment: Where reliability at high temperatures is critical.

The robust insulation and thermal classification make these wires ideal for applications where long-term thermal stability and mechanical reliability are required.

Related Standards

• IEC 60851 - Methods of test for winding wires: Provides the detailed test procedures referenced in IEC 60317-43.
• IEC 60264 - Packaging requirements for winding wires: Specifies packaging and handling guidelines to maintain wire integrity.
• ISO 3 - Preferred numbers: Used for standardizing conductor diameters under IEC 60317-43.
• Additional parts of IEC 60317 series cover other types of insulated winding wires catering to different thermal classes and wrapping techniques.

For manufacturers, engineers, and quality assurance professionals, IEC 60317-43 offers a comprehensive, internationally accepted framework for selecting and specifying aromatic polyimide tape wrapped round copper winding wire class 240, ensuring high-quality, reliable electrical insulation for demanding thermal environments. Compliance with this standard enhances product performance, safety, and interoperability across global markets.

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For further information and to access the full document, visit the IEC Webstore. Stay updated with the latest international standards and best practices in winding wire technology.

Standards Content (Sample)

IEC 60317-43 ®
Edition 1.1 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specifications for particular types of winding wires –
Part 43: Aromatic polyimide tape wrapped round copper wire, class 240

Spécifications pour types particuliers de fils de bobinage –
Partie 43: Fil de section circulaire en cuivre recouvert d'un ruban de polyimide
aromatique, classe 240
IEC 60317-43:1997+A1:2010
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IEC 60317-43 ®
Edition 1.1 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specifications for particular types of winding wires –
Part 43: Aromatic polyimide tape wrapped round copper wire, class 240

Spécifications pour types particuliers de fils de bobinage –
Partie 43: Fil de section circulaire en cuivre recouvert d'un ruban de polyimide
aromatique, classe 240
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CD
CODE PRIX
ICS 29.060.10 ISBN 978-2-88910-960-9
– 2 – 60317-43 © IEC:1997+A1:2010
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references.6
3 Definitions and general notes on methods of test .7
4 Dimensions.8
5 Electrical resistance.10
6 Elongation .10
7 Springiness.10
8 Flexibility and adherence .10
9 Heat shock .11
10 Cut-through .11
11 Resistance to abrasion .11
12 Resistance to solvents .11
13 Breakdown voltage .11
14 Continuity of insulation.12
15 Temperature index.12
16 Resistance to refrigerants .12
17 Solderability.12
18 Heat or solvent bonding .12
19 Dielectric dissipation factor .12
20 Resistance to transformer oil .12
21 Loss of mass .12
23 Pin hole test .12
30 Packaging.13

Annex A (informative) Conductor diameters for intermediate sizes (R 40) .14
Annex B (informative) Resistance .15

Table 1 – Conductor diameters.8
Table 2 – Minimum increases due to the insulation .9
Table 3 – Maximum increases due to the insulation .9
Table 4 – Elongation requirements .10
Table 5 – Breakdown voltage .11
Table A.1 – Conductor diameters (R 40).14
Table B.1 – Nominal resistance .15

60317-43 © IEC:1997+A1:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 43: Aromatic polyimide tape wrapped round copper wire,
class 240
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
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

This consolidated version of IEC 60317-43 consists of the first edition (1997) [documents
55/540/FDIS and 55/570/RVD] and its amendment 1 (2010) [documents 55/1175/FDIS and
55/1186/RVD]. It bears the edition number 1.1.
The technical content is therefore identical to the base edition and its amendment and
has been prepared for user convenience. A vertical line in the margin shows where the
base publication has been modified by amendment 1. Additions and deletions are
displayed in red, with deletions being struck through.

– 4 – 60317-43 © IEC:1997+A1:2010
International Standard IEC 60317-43 has been prepared by IEC technical committee 55:
Winding wires.
Annexes A and B are for information only.
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the stability date indicated on the IEC web site under "http://webstore.iec.ch"
in the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.

60317-43 © IEC:1997+A1:2010 – 5 –
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. The series has three groups describing:
1) methods of test (IEC 60851);
2) specifications (IEC 60317);
3) packaging (IEC 60264).
– 6 – 60317-43 © IEC:1997+A1:2010
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 43: Aromatic polyimide tape wrapped round copper wire,
class 240
1 Scope
This part of IEC 60317 specifies requirements of tape wrapped round copper winding wire of
class 240. The insulation consists of one or two wrappings of aromatic polyimide tape.
Class 240 is a thermal class that requires a temperature index of at least 240, and a heat
shock temperature of at least 260 °C.
NOTE In some countries, e.g. Canada, Russia, USA, this product is assigned a class 220.
The tape is coated on one or both sides with a suitable adhesive, for instance, fluorinated
ethylene propylene. After wrapping, the tape is heat-sealed to form a continuous and adherent
sheath. Specific requirements may be subject to contract.
The temperature in degrees Celsius corresponding to the temperature index is not necessarily
that at which the wire is recommended to be used and this will depend on many factors,
including the types of equipment involved.
The range of nominal conductor diameters covered by this standard is:
1,600 mm up to and including 5,000 mm.
The nominal conductor diameters are given in table 1.
When reference is made to winding wire according to this standard, the following information
should be given:
– reference to IEC 60317-43;
– diameter of the conductor;
– grade.
Example: 60317-43 IEC 2,000 mm grade A2
2 Normative references
The following referenced documents are indispensable for the application of this document. For
dated references, only the edition cited applies. For undated references, the latest edition of
the referenced document (including any amendments) applies.
IEC 60172: 1987, Test procedure for the determination of the temperature index of enamelled
winding wires
IEC 60851, Methods of test for winding wires
ISO 3:1973, Preferred numbers – Series of preferred numbers

60317-43 © IEC:1997+A1:2010 – 7 –
3 Definitions and general notes on methods of test
3.1 Terms and definitions
For the purpose of this part of IEC 60317, the following definitions apply.
3.1.1
class
the thermal performance of a wire expressed by the temperature index and the heat shock
temperature
3.1.2
conductor
the bare metal after removal of the insulation
3.1.3
covering
a material which is wound, wrapped or braided around a bare or insulated conductor
3.1.4
crack
an opening in the insulation which exposes the conductor to view at the stated magnification
3.1.5
grade
a range of thickness of the insulation of a wire
3.1.6
insulation
a coating or covering on the conductor with the specific function of withstanding voltage
3.1.7
nominal conductor dimension
the designation of the conductor size in accordance with IEC 60317
3.1.8
winding wire
a wire used for winding a coil to provide a magnetic field
3.1.9
wire
a conductor coated or covered with an insulation
3.2 General notes on methods of test
All methods of test used in this part of IEC 60317 are given in IEC 60851. The clause numbers
used in this standard are identical with the respective test numbers of IEC 60851.
In case of inconsistencies between IEC 60851 on methods of test and this part of IEC 60317,
the latter 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.

– 8 – 60317-43 © IEC:1997+A1:2010
Unless otherwise specified, all tests shall be carried out at a temperature from 15 °C to 35 °C,
and a relative humidity from 45 % 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.
4 Dimensions
The dimensions due to the insulation depend upon an agreement between purchaser and
supplier. The dimensions in this standard shall be used as a guide in forming that agreement.
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.
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 limits given
in table 1.
Table 1 – Conductor diameters
Nominal conductor Tolerance Nominal conductor Tolerances
diameter ± diameter ±
mm mm mm mm
1,600 0,016 3,150 0,032
1,800 0,018 3,550 0,036
2,000 0,020 4,000 0,040
2,240 0,022 4,500 0,045
2,500 0,025 5,000 0,050
2,800 0,028
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 columns 2 and 4 of table 1.
4.3 Minimum increase in diameter due to the insulation
The minimum increase in diameter due to the insulation shall not be less than the values given
in table 2.
60317-43 © IEC:1997+A1:2010 – 9 –
Table 2 – Minimum increases due to the insulation
Single tape Double tape
Minimum increase in diameter Minimum increase in
due to the insulation diameter due to the insulation
Grade Grade
mm mm
A1 0,100 B1 0,200
A2 0,130 B2 0,260
A3 0,170 B3 0,340
A4 0,210 B4 0,430
A5 0,260 B5 0,510
4.4 Maximum overall diameter
The overall diameter shall not exceed the sum of the maximum conductor diameter given in
table 1 and the maximum increase in diameter due to the insulation given in table 3.
Before wrapping, the conductor shall be completely free from copper dust and other extraneous
matter.
One or two tapes may be applied. Combinations of different thicknesses and degree of overlap
shall be agreed between purchaser and supplier.
The tape shall be wrapped on the conductor tightly, evenly, and free from creases or wrinkles,
with the adhesive on the inside.
After wrapping, the tape shall be heat-sealed by suitable means to form an adherent and
continuous sheath.
Table 3 – Maximum increases due to the insulation
Single tape Double tape
Maximum increase
Maximum increase in diameter
in diameter due to
due to the insulation
Grade Grade
the insulation
mm
mm
A1 0,140 B1 0,280
A2 0,180 B2 0,360
A3 0,240 B3 0,480
A4 0,300 B4 0,600
A5 0,340 B5 0,680
Example: The maximum overall diameter of a wire with a nominal conductor diameter of
2,000 mm and insulated with a single tape to grade A3 (including adhesive) is
2,020 mm + 0,240 mm = 2,260 mm.

– 10 – 60317-43 © IEC:1997+A1:2010
5 Electrical resistance
No resistance values are specified.
The nominal resistance at 20 °C is given in annex B.
6 Elongation
The elongation at fracture shall be in accordance with the values given in table 4. Test
inappropriate.
Table 4 – Elongation requirements
Nominal conductor diameter Minimum
mm elongation
Up to and
Over %
including
– 2,500 30
2,500 5,000 33
7 Springiness
7.1 Nominal conductor diameter of 1,600 mm
When tested on a mandrel of 50 mm using a tension of 15 N, the wire shall not exceed the
maximum springback as follows:
– grade A: 28°;
– grade B: 30°.
7.2 Nominal conductor diameters over 1,600 mm
The wire shall not exceed the maximum springback of 5°.
8 Flexibility and adherence
8.1 Mandrel winding test
The covering shall show no crack or delamination after the wire has been wound on a mandrel
with a diameter equal to four times the nominal conductor diameter.
8.2 Adherence test
The wire shall be stretched by 15 % for a single wrapping and 10 % for a double wrapping. The
distance of loss of adhesion shall be less than:
– five times conductor diameter for sizes up to and including 3,000 mm;
– three times conductor diameter for sizes over 3,000 mm.

60317-43 © IEC:1997+A1:2010 – 11 –
9 Heat shock
9.1 Nominal conductor diameter of 1,600 mm
The insulation shall show no crack when tested on a mandrel with a diameter of 5,000 mm.
The heat shock temperature shall be at least 260 °C.
9.2 Nominal conductor diameters over 1,600 mm
The insulation shall show no crack after having been elongated by 15 % for a single wrapping
and 10 % for a double wrapping.
The heat shock temperature shall be at least 260 °C.
10 Cut-through
For a nominal round conductor diameter of 1,600 mm, no failure shall occur within 2 min, at
450 °C.
11 Resistance to abrasion
Test inappropriate.
12 Resistance to solvents
Test inappropriate.
13 Breakdown voltage
At least four of the five specimens tested shall not break down at a voltage less than or equal
to that given in table 5.
Table 5 – Breakdown voltage
Nominal conductor diameter Minimum breakdown voltage
mm Single tape Double tape
Up to and Tension Tension
Over Grade Grade
including V V
A1 1 500 B1 2 500
1,600 5,000 A2 2 000 B2 3 000
A3 2 300 B3 3 500
A4 2 600 B4 4 200
A5 3 000 B5 5 000
– 12 – 60317-43 © IEC:1997+A1:2010
14 Continuity of insulation
The method of test and requirement may be agreed upon between purchaser and supplier.
15 Temperature index
The test shall be carried out in accordance with IEC 60172 on specimens made from aromatic
polyimide tape wrapped round wire having a nominal conductor diameter of 1,600 mm.
The minimum temperature index shall be 240 and the time to failure at the lowest test
temperature shall not be less than 5 000 h.
16 Resistance to refrigerants
Test inappropriate.
17 Solderability
Test inappropriate.
18 Heat or solvent bonding
Test inappropriate.
19 Dielectric dissipation factor
Test inappropriate.
20 Resistance to transformer oil
Test inappropriate.
21 Loss of mass
Test inappropriate.
23 Pin hole test
Test inappropriate.
60317-43 © IEC:1997+A1:2010 – 13 –
30 Packaging
The kind of packaging may influence certain properties of the wire, for example springback.
Therefore the kind of packaging, for example the type of spool, shall be agreed upon 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 upon by purchaser and supplier.
Where wires are delivered in coils, the dimensions
...