IEC 60317-27-3:2019

IEC 60317-27-3 ®
Edition 1.0 2019-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –
Part 27-3: Paper tape covered rectangular copper wire

Spécifications pour types particuliers de fils de bobinage –
Partie 27-3: Fil de section rectangulaire en cuivre recouvert de ruban papier

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IEC 60317-27-3 ®
Edition 1.0 2019-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –

Part 27-3: Paper tape covered rectangular copper wire

Spécifications pour types particuliers de fils de bobinage –

Partie 27-3: Fil de section rectangulaire en cuivre recouvert de ruban papier

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-7510-8

– 2 – IEC 60317-27-3:2019 © IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, general notes and appearance . 6
3.1 Terms and definitions . 6
3.2 General notes . 7
3.2.1 Methods of test . 7
3.2.2 Winding wire . 7
3.3 Appearance . 7
4 Dimensions. 7
4.1 Conductor dimensions . 7
4.2 Tolerance on conductor dimensions . 7
4.3 Rounding of corners . 7
4.4 Increase in dimensions due to paper covering . 7
4.5 Maximum overall dimensions . 8
5 Electrical resistance . 8
6 Elongation . 8
7 Springiness . 8
8 Flexibility and adherence . 8
9 Heat shock . 8
10 Cut-through . 8
11 Resistance to abrasion . 9
12 Resistance to solvents . 9
13 Breakdown voltage . 9
14 Continuity of insulation . 9
15 Temperature index . 9
16 Resistance to refrigerants . 9
17 Solderability . 9
18 Heat or solvent bonding . 9
19 Dielectric dissipation factor . 9
20 Resistance to hydrolysis and to transformer oil . 9
21 Loss of mass . 9
23 Pin hole test . 9
30 Packaging . 10
Bibliography . 11

Table 1 – Increase in dimensions . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR
TYPES OF WINDING WIRES –
Part 27-3: Paper tape covered rectangular copper 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
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60317-27-3 has been prepared by IEC technical committee 55:
Winding wires.
This first edition cancels and replaces the fourth edition of IEC 60317-27 published in 2013.
This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to
IEC 60317-27:2013:
a) replacement of Annex A with a reference to ISO 6892-1;
b) renumbering of this document as IEC 60317-27-3, as one in a series of four specifications
for paper covered winding wires.

– 4 – IEC 60317-27-3:2019 © IEC 2019
The text of this International Standard is based on the following documents:
FDIS Report on voting
55/1801/FDIS 55/1826/RVD
Full information on the voting for the approval of this document can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This International Standard is to be used in conjunction with the IEC 60317-0-2:2013.
The numbering of clauses in this document is not continuous from Clauses 20 to 30 in order
to reserve space for possible future wire requirements prior to those for wire packaging.
A list of all the 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 publication. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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).

– 6 – IEC 60317-27-3:2019 © IEC 2019
SPECIFICATIONS FOR PARTICULAR
TYPES OF WINDING WIRES –
Part 27-3: Paper tape covered rectangular copper wire

1 Scope
This part of IEC 60317 specifies the requirements of paper tape covered rectangular copper
winding wires. This covering consists of two or more layers of paper tape and is primarily
intended for winding coils for oil immersed transformers.
The range of nominal conductor dimensions covered by this document is:
– width: min. 2,0 mm max. 31,5 mm;
– thickness: min. 0,80 mm max. 10,0 mm.
The paper tapes included in this document are restricted to those specified in IEC 60554-1
and IEC 60554-3-5.
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 60317-0-2:2013, Specifications for particular types of winding wires – Part 0-2: General
requirements – Enamelled rectangular copper wire
IEC 60554-1, Specification for cellulosic papers for electrical purposes – Part 1: Definitions
and general requirements
IEC 60554-3-5, Specification for cellulosic papers for electrical purposes – Part 3:
Specifications for individual materials – Sheet 5: Special papers
IEC 60851-2:, Winding wires – Test methods – Part 2: Determination of dimensions
3 Terms, definitions, general notes and appearance
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60317-0-2 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
covering
material which is wound, wrapped or braided around a bare or insulated conductor
3.2 General notes
3.2.1 Methods of test
Subclause 3.2.1 of IEC 60317-0-2:2013 applies. In case of inconsistency between
IEC 60317-0-2 and this document, IEC 60317-27-3 shall prevail.
3.2.2 Winding wire
The number of paper tapes, type of paper, paper tape thickness, and the degree of overlap
shall be agreed upon between the purchaser and supplier.
When a reference is made to winding wire according to this document, the following
information shall be given in the description:
– reference to IEC 60317-27-3;
– nominal conductor dimensions in millimetres (width × thickness);
– nominal increase in dimensions due to paper;
EXAMPLE 1 IEC 60317-27-3 4,00 × 1,00 + 0,20
– (eventually) proof strength minimum (and maximum) value.
EXAMPLE 2 IEC 60317-27-3 4,00 × 1,00 + 0,20 IEC 60317-27 7,00 × 2,50 + 1,00 R = 150 MPa
p0,2
3.3 Appearance
The conductor shall be essentially free from copper dust and other extraneous matter when
examined with normal vision, as wound on the original spool or reel. The paper covering shall
be of one or more tapes wrapped firmly, closely, evenly, and continuously around the
conductor.
No bonding or adhesive material shall be used except to anchor the ends of paper tapes.
4 Dimensions
4.1 Conductor dimensions
Subclause 4.1 of IEC 60317-0-2: 2013 applies.
4.2 Tolerance on conductor dimensions
Subclause 4.2 of IEC 60317-0-2: 2013 applies.
4.3 Rounding of corners
Subclause 4.3 of IEC 60317-0-2: 2013 applies.
4.4 Increase in dimensions due to paper covering
The increase in width or thickness due to the paper tape covering shall be agreed between
purchaser and supplier and the minus tolerance shall not exceed the values given in Table 1.
The increase in width due to the paper covering shall be equal to or less than the increase in
thickness.
– 8 – IEC 60317-27-3:2019 © IEC 2019
The maximum increase may be exceeded, provided that the maximum overall dimension does
not exceed the sum of the maximum dimensions of the conductor plus the maximum increase
given in Table 1.
Table 1 – Increase in dimensions
Increase in dimension due to the paper covering
Tolerance
mm
%
Over Up to and including
−10
– 0,50
−7,5
0,50 1,25
−5
1,25 –
4.5 Maximum overall dimensions
The overall dimensions shall be measured under a pressure in accordance with
IEC 60851-2 over the cross section of the bare conductor nominal dimension.
The overall dimensions shall not exceed the sum of the maximum bare dimensions given in
4.2 and the maximum increase in dimensions permitted in 4.4.
5 Electrical resistance
Clause 5 of IEC 60317-0-2:2013 applies.
6 Elongation
Clause 6 of IEC 60317-0-2:2013 applies.
NOTE When the value of the proof strength of the copper is specified between minimum and maximum limits, the
requirements are agreed upon between the purchaser and supplier. The method of determination is given in
ISO 6892-1.
7 Springiness
Test appropriate but no requirements specified.
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 Resis
...