IEC 60317-37:2013

IEC 60317-37 ®
Edition 2.0 2013-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –
Part 37: Polyesterimide enamelled round copper wire, class 180, with a bonding
layer
Spécifications pour types particuliers de fils de bobinage –
Partie 37: Fil de section circulaire en cuivre émaillé avec polyesterimide, classe
180, avec une couche adhérente

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IEC 60317-37 ®
Edition 2.0 2013-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –

Part 37: Polyesterimide enamelled round copper wire, class 180, with a bonding

layer
Spécifications pour types particuliers de fils de bobinage –

Partie 37: Fil de section circulaire en cuivre émaillé avec polyesterimide, classe

180, avec une couche adhérente

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 29.060.10 ISBN 978-2-8322-1148-9

– 2 – 60317-37 © IEC:2013
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 . 6
3.2.1 Methods of test . 6
3.2.2 Winding wire . 6
3.3 Appearance . 7
4 Dimensions . 7
5 Electrical resistance . 7
6 Elongation . 7
7 Springiness . 7
8 Flexibility and adherence . 7
9 Heat shock . 7
10 Cut-through . 7
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to and
including 1,600 mm) . 7
12 Resistance to solvents . 8
13 Breakdown voltage . 8
14 Continuity of insulation . 8
15 Temperature index . 8
16 Resistance to refrigerants . 8
17 Solderability . 9
18 Heat or solvent bonding . 9
18.1 Heat bonding . 9
18.1.1 Heat bonding strength of a helical coil . 9
18.1.2 Bond strength on a twisted coil . 10
18.2 Solvent bonding . 11
19 Dielectric dissipation factor . 11
20 Resistance to transformer oil . 11
21 Loss of mass . 11
23 Pin hole test . 11
30 Packaging . 11
Bibliography . 12

Table 1 – Resistance to abrasion . 8
Table 2 – Loads . 10

60317-37 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 37: Polyesterimide enamelled round copper wire,
class 180, with a bonding layer

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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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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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 60317-37 has been prepared by IEC technical committee 55:
Winding wires.
This second edition cancels and replaces the first edition published in 1992,
Amendment 1:1997 and Amendment 2:1999. 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;
– revision to references to IEC 60317-0-1:2013 to clarify that their application is normative;
– new Clause 23, Pin hole test.

– 4 – 60317-37 © IEC:2013
The text of this standard is based on the following documents:
FDIS Report on voting
55/1418/FDIS 55/1439/RVD
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.
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 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.
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.
60317-37 © IEC:2013 – 5 –
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).

– 6 – 60317-37 © IEC:2013
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 37: Polyesterimide enamelled round copper wire,
class 180, with a bonding layer

1 Scope
This part of IEC 60317 specifies the requirements of enamelled round copper winding wire of
class 180 with a dual coating. The underlying coating is based on polyesterimide resin, which
may be modified providing it retains the chemical identity of the original resin and meets all
specified wire requirements. The superimposed coating is a bonding layer based on a
thermoplastic resin.
NOTE A modified resin is a resin that has undergone a chemical change, or contains one or more additives to
enhance certain performance or application characteristics.
The range of nominal conductor diameters covered by this part is:
– Grade 1B: 0,020 mm up to and including 1,600 mm;
– Grade 2B: 0,020 mm up to and including 1,600 mm.
The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013.
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 60317-0-1:2013, Specifications for particular types of winding wires – Part 0-1: General
requirements – Enamelled round copper wire
3 Terms, definitions, general notes and appearance
3.1 Terms and definitions
Subclause 3.1 of IEC 60317-0-1:2013 applies.
3.2 General notes
3.2.1 Methods of test
Subclause 3.2.1 of IEC 60317-0-1:2013 applies. In case of inconsistencies between
IEC 60317-0-1:2013 and this part of IEC 60317, the latter shall prevail.
3.2.2 Winding wire
Class 180 is a thermal class that requires a minimum temperature index of 180 and a heat
shock temperature of at least 200 °C.
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.

60317-37 © IEC:2013 – 7 –
3.3 Appearance
Subclause 3.3 IEC 60317-0-1:2013 applies.
4 Dimensions
Clause 4 of IEC 60317-0-1:2013 applies.
5 Electrical resistance
Clause 5 of IEC 60317-0-1:2013 applies.
6 Elongation
Clause 6 of IEC 60317-0-1:2013 applies.
7 Springiness
Clause 7 of IEC 60317-0-1:2013 applies.
8 Flexibility and adherence
Clause 8 of IEC 60317-0-1:2013 applies. For 8.4, the constant K used for the calculation of
the number of revolutions for the peel test shall be 110 mm.
9 Heat shock
Clause 9 of IEC 60317-0-1:2013 applies. The minimum heat shock temperature shall be
200 °C.
10 Cut-through
No failure shall occur within 2 min at 300 °C.
11 Resistance to abrasion (nominal conductor diameters from 0,250 mm up to
and including 1,600 mm)
The wire shall meet the requirements given in Table 1.
For intermediate nominal conductor diameters, the value of the next larger nominal conductor
diameter shall be taken.
– 8 – 60317-37 © IEC:2013
Table 1 – Resistance to abrasion
Grade 1B Grade 2B
Nominal conductor
Minimum average Minimum force to Minimum average Minimum force to
diameter
force to failure failure of each force to failure failure of each
measurement measurement
mm N N N N
0,250 2,85 2,45 4,70 4,00
0,280 3,10 2,60 5,05 4,30
0,315 3,35 2,80 5,45 4,60
0,355 3,60 3,05 5,85 4,95
0,400 3,85 3,25 6,25 5,30
0,450 4,15 3,50 6,75 5,70
0,500 4,45 3,75 7,20 6,10
0,560 4,75 4,05 7,70 6,50
0,630 5,10 4,35 8,25 7,00
0,710 5,45 4,65 8,85 7,50
0,800 5,85 4,95 9,50 8,05
0,900 6,30 5,35 10,2 8,60
1,000 6,75 5,75 10,9 9,20
1,120 7,35 6,20 11,6 9,80
1,250 7,90 6,70 12,5 10,5
1,400 8,50 7,20 13,3 11,3
1,600 9,20 7,80 14,3 12,1
12 Resistance to solvents
Test inappropriate.
13 Breakdown voltage
Clause 13 of IEC 60317-0-1:2013 applies. The elevated temperature shall be 180 °C.
14 Continuity of insulation
Clause 14 of IEC 60317-0-1:2013 applies.
15 Temperature index
Clause 15 of IEC 60317-0-1:2013 applies. The minimum temperature index shall be 180.
16 Resistance to refrigerants
Test inappropriate.
60317-37 © IEC:2013 – 9 –
17 Solderability
Test inappropriate.
18 Heat or solvent bonding
18.1 Heat bonding
18.1.1 Heat bonding strength of a helical coil
18.1.1.1 At room temperature
The specimens shall be prepared according to the test method, and the temperature of the
oven for bonding shall be fixed as agreed between purchaser and supplier for the different
types of bonding enamels. The suggested temperature for polyamide bonding enamel
is (200 ± 2) °C and the suggested temperature for aromatic polyamide bonding enamel is
(230 ± 2) °C.
Results: when testing the specimens according to the test method, under the action of load
specified in Table 2, no turns (other than possibly the first and the last) shall separate.
18.1.1.2 At elevated temperature
The specimens shall be prepared and shall be conditioned as described in the test method.
The elevated temperature shall be fixed as agreed between purchaser and supplier for the
different types of bonding enamels. The suggested temperature for polyamide bonding
enamel is (155 ± 2) °C and the suggested temperature for aromatic polyamide bond-
ing enamel is (170 ± 2) °C.
Results: when testing the specimens according to the test method, under the action of load
specified in Table 2, no turns (other than possibly the first and the last) shall separate.

– 10 – 60317-37 © IEC:2013
Table 2 – Loads
Nominal conductor diameter Load
mm N
Over Up to Room Elevated
and including temperature temperature
a a
– 0,050
0,050 0,071 0,05 0,04
0,071 0,100 0,08 0,06
0,100 0,160 0,12 0,08
0,160 0,200 0,25 0,19
0,200 0,315 0,35 0,25
0,315 0,400 0,70 0,55
0,400 0,500 1,10 0,80
0,500 0,630 1,60 1,20
0,630 0,710 2,20 1,70
0,710 0,800 2,80 2,10
0,800 0,900 3,40 2,60
0,900 1,000 4,20 3,20
1,000 1,120 5,00 3,80
1,120 1,250 5,80 4,40
1,250 1,400 6,50 4,90
1,400 1,600 8,50 6,40
a
For nominal conductor diameters up to and including 0,050 mm, the test method and requirements shall be
agreed between purchaser and supplier.

18.1.2 Bond strength on a twisted coil
18.1.2.1 General
This test shall be considered only as a special test and is applicable to the diameter
0,315 mm.
18.1.2.2 At room temperat
...