IEC 60317-53:2014

IEC 60317-53 ®
Edition 2.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –
Part 53: Aromatic polyamide (aramid) tape wrapped rectangular copper wire,
temperature index 220
Spécifications pour types particuliers de fils de bobinage –
Partie 53: Fil de section rectangulaire en cuivre enveloppé avec un ruban
polyamide aromatique (aramide), d'indice de température 220

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IEC 60317-53 ®
Edition 2.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –

Part 53: Aromatic polyamide (aramid) tape wrapped rectangular copper wire,

temperature index 220
Spécifications pour types particuliers de fils de bobinage –

Partie 53: Fil de section rectangulaire en cuivre enveloppé avec un ruban

polyamide aromatique (aramide), d'indice de température 220

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 29.060.10 ISBN 978-2-8322-1494-7

– 2 – IEC 60317-53:2014 © IEC 2014
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 . 8
3.3 Appearance . 9
4 Dimensions . 9
4.1 Conductor dimensions . 9
4.2 Tolerance on conductor dimensions . 11
4.3 Rounding of corners . 11
4.4 Increase in dimensions due to tape covering. 11
4.5 Maximum overall dimensions . 12
5 Electrical resistance . 12
6 Elongation . 13
7 Springiness . 13
8 Flexibility and adherence . 13
9 Heat shock . 13
10 Cut-through . 13
11 Resistance to abrasion . 13
12 Resistance to solvents . 13
13 Breakdown voltage. 13
14 Continuity of insulation . 13
15 Temperature index . 14
16 Resistance to refrigerants . 14
17 Solderability . 14
18 Heat or solvent bonding . 14
19 Dielectric dissipation factor . 14
20 Resistance to hydrolysis and to transformer oil . 14
21 Loss of mass . 14
23 Pin hole test . 14
30 Packaging . 14

Annex A (informative) Example of tape wrapped wire . 16
Bibliography . 17

Figure A.1 – Illustrations of overlap . 16

Table 1 – Nominal cross-sectional areas of preferred sizes. 10
Table 2 – Conductor tolerances . 11

Table 3 – Corner radii . 11
Table 4 – Elongation requirements . 13

– 4 – IEC 60317-53:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR
TYPES OF WINDING WIRES –
Part 53: Aromatic polyamide (aramid) tape wrapped
rectangular copper wire, temperature index 220

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
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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) 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 60317-53 has been prepared by IEC technical committee 55:
Winding wires.
This second edition cancels and replaces the first edition published in 1999. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– new 3.2.2 containing general notes on winding wire, formerly a part of the scope;
– new 3.3, containing requirements for appearance;
– modification to Clause 15 to delete the note on revisions to IEC 60172;
– new Clause 23, Pin hole test.

The text of this standard is based on the following documents:
CDV Report on voting
55/1396/CDV 55/1458/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The numbering of clauses in this standard is not continuous from Clauses 20 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 publication will remain unchanged until the
stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to
the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 6 – IEC 60317-53:2014 © IEC 2014
INTRODUCTION
This part of IEC 60317 is one of a series which deals with insulated wires used for windings in
electrical equipment. The series has three groups describing:
1) Winding wires – Test methods (IEC 60851);
2) Specifications for particular types of winding wires (IEC 60317);
3) Packaging of winding wires (IEC 60264).

SPECIFICATIONS FOR PARTICULAR
TYPES OF WINDING WIRES –
Part 53: Aromatic polyamide (aramid) tape wrapped
rectangular copper wire, temperature index 220

1 Scope
This part of IEC 60317 specifies requirements for tape wrapped rectangular copper winding
wire of temperature index 220. The insulation consists of one or more wrappings of aromatic
polyamide (aramid) tape of various thicknesses.
NOTE The heat shock test is inappropriate for this type of wire, and therefore a heat shock temperature cannot be
established. Consequently, a class based on the requirements for temperature index and heat shock temperature
cannot be specified.
The range of nominal conductor dimensions covered by this standard is:
– width: min. 2,00 mm max. 16,00 mm;
– thickness: min. 0,80 mm max. 5,60 mm.
The specified combinations of width and thickness as well as the specified ratio width/thick-
ness are given in Table 1.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. 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 winding
wires
IEC 60819-3-3:2011, Non-cellulosic papers for electrical purposes – Part 3: Specifications for
individual materials – Sheet 3: Unfilled aramid (aromatic polyamide) papers
IEC 60851 (all parts), Winding wires – Test methods
3 Terms, definitions, general notes and appearance
3.1 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1.1
class
thermal performance of a wire expressed by the temperature index and the heat shock
temperature
– 8 – IEC 60317-53:2014 © IEC 2014
3.1.2
conductor
bare metal after removal of the insulation
3.1.3
covering
material which is wound, wrapped or braided around a bare or insulated conductor
3.1.4
insulation
coating or covering on the conductor with the specific function of withstanding voltage
3.1.5
winding wire
wire used for winding a coil to provide a magnetic field
3.1.6
wire
conductor coated or covered with an insulation
3.2 General notes
3.2.1 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 to the corresponding test numbers in
the IEC 60851 series of standards.
In case of inconsistencies between the publication on methods of test and this standard,
IEC 60317-53 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 °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.
3.2.2 Winding wire
One or more tape layers may be applied. Combinations of different types, different thickness
and degree of overlap shall be agreed between the purchaser and the supplier.
Where adhesive is used to secure the loose ends of the tape, it shall be compatible with the
insulation system in use.
The temperature in degrees Celsius corresponding to the temperature index is not necessarily
that at which the wire is recommended to be operated and this will depend on many factors,
including the types of equipment involved.

When reference is made to winding wire according to this standard, the following information
should be given:
– reference to IEC 60317-53;
– dimensions of the conductor;
– reference should also be made to the number and thickness of the papers used and to the
degree of overlap, as agreed between purchaser and supplier.
3.3 Appearance
Before wrapping, the conductor shall be completely free from copper dust and other extraneous
matter.
The tape covering shall be essentially smooth and continuous, wrapped around the conductor
tightly, evenly and free from creases, wrinkles and foreign material when examined with normal
vision, as wound on the original spool or reel.
4 Dimensions
4.1 Conductor dimensions
The dimensions for widths and thicknesses of conductors of winding wires with rectangular
cross-section recommended in this standard are taken from the R 20 and R 40 series
according to ISO 3.
Preferred sizes are combinations of width and thickness both according to the R 20 series.
Intermediate sizes are combinations of width or thickness according to the R 20 series with the
other dimension according to the R 40 series.
This standard covers:
– widths from 2,00 mm up to and including 16,00 mm;
*
– thicknesses from 0,80 mm up to and including 5,60 mm.
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 1.
The nominal cross-sectional areas for preferred sizes are given in Table 1.
___________
*
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 and combinations of R 40 and R 40 are not allowed in the
case of additional sizes.
**
Dimensions according to R 20 series are printed in larger type.

– 10 – IEC 60317-53:2014 © IEC 2014

Table 1 – Nominal cross-sectional areas of preferred sizes

4.2 Tolerance on conductor dimensions
The conductor dimensions shall not differ from the nominal values by more than the tolerance
given in Table 2.
Table 2 – Conductor tolerances
Nominal width or thickness of the conductor
Tolerance
mm
±
mm
Over Up to and including
– 3,15 0,030
3,15 6,30 0,050
6,30 12,50 0,070
12,50 16,00 0,100
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 3 – Corner radii
Nominal thickness of conductor
Corner
mm
radius
mm
Over Up to and including
– 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
NOTE If agreed between purchaser and supplier, the corner radii for wires with a width greater than 4,8 mm may
be:
* 0,5 nominal thickness
** 0,8 mm
4.4 Increase in dimensions due to tape covering
As there are many varied constructions of this type of wire, the dimensions due to the
insulation are subject to agreement between purchaser and supplier and shall be clearly stated
in the purchase order.
If there is no agreement, the minimum increase in width or thickness due to the tape covering
shall not be less than the values calculated using the following formula:
2 Σ T . n
min i i
where T is the minimum thickness of the paper in the layer number i and n is determined
min.i i
by the degree of overlap in that layer:
– for overlaps of 0 % up to, but not including 50 % n = 1;

– 12 – IEC 60317-53:2014 © IEC 2014
– for overlaps of 50 % up to, but not including 66 % n = 2;
– for overlaps of 66 % up to and including 75 % n = 3.
Minimum thickness shall be calculated from the values given in Table 1 of IEC 60819-3-3:2011
where the permissible deviation of the central thickness value is:
– for nominal thickness 0,05 mm ± 20 %;
– for nominal thicknesses 0,08 mm and greater ± 15 %.
EXAMPLE 1 For a construction using two layers of 0,05 mm paper with 50 % overlap:
T = 0,04 mm and n = 2
min.1 1
T = 0,04 mm and n = 2
min.2 2
Therefore, the minimum thickness due to the insulation equals:
2(0,04 × 2 + 0,04 × 2) mm = 0,320 mm
EXAMPLE 2 For a construction using one layer of 0,05 mm paper with an overlap of 55 % followed by two layers
of 0,08 mm paper with no overlap:
T = 0,04 mm, n = 2
min.1 1
T = 0,068 mm, n = 1
min.2 2
T = 0,068 mm, n = 1
min.3 3
Therefore, the minimum thickness due to the insulation equals:
2(0,04 × 2 + 0,068 × 1 + 0,068 × 1) mm = 0,432 mm
4.5 Maximum overall dimensions
If there is no agreement, the overall dimensions shall not exceed the sum of the maximum
conductor dimensions in accordance with 4.2 and the maximum increase in dimensions due to
the tape covering which is calculated using the formula given below.
The formula for calculating the maximum increase due to the insulation is:
2 Σ (n + 1) T
i max.i
where
n is determined by the degree of overlap in accordance with 4.3 in layer number i;
i
T is the maximum paper thickness as calculated in accordance with 4.3 in that layer.
max.i
See the example given in Annex A.
5 Electrical resistance
The resistance of the wire shall be expressed as the d.c. resistance at 20 °C. The method used
shall provide an accuracy of 0,5 %.
The maximum value of resistance shall not be 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 radii, and with a resistivity
2 –1
·m .
of 1/58 Ω·mm
One measurement shall be made.

6 Elongation
The elongation at fracture shall be in accordance with the values given in Table 4.
Table 4 – Elongation requirements
Nominal thickness of the conductor Minimum elongation
mm
%
Over Up to and including
– 2,500 30
2,500 5,600 32
7 Springiness
The springback of the wire shall not exceed 5,5°.
8 Flexibility and adherence
Because of the great variation in the number and the thickness of papers applied, the
requirements for flexibility shall be agreed between purchaser and supplier at the time of
placing the order.
9 Heat shock
Test inappropriate.
10 Cut-through
Test inappropriate.
11 Resistance to abrasion
Test inappropriate.
12 Resistance to solvents
Test inappropriate.
13 Breakdown voltage
At least four out of five specimens shall not break down at a voltage less or equal to
11,8 kV/mm, based on half the minimum increase in size due to the paper.
14 Continuity of insulation
Test inappropriate.
– 14 – IEC 60317-53:2014 © IEC 2014
15 Temperature index
The method of test shall be in accordance with IEC 60172. The minimum temperature index
shall be 220.
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 hydrolysis and to transformer oil
Test inappropriate.
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.
Therefore, the kind of packaging, for example the ty
...