EN 60317-44:1997
(Main)Specifications for particular types of winding wires - Part 44: Aromatic polyimide tape wrapped rectangular copper wire, class 240
General Information
- Abstract
IEC 60317-44:1997 specifies the requirements of tape wrapped rectangular 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 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 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/thickness are given in IEC 60317-0-2. When a reference is made to winding wire according to this standard, the following information should be given: – reference to IEC 60317-44; – dimension of the nominal conductor (width x thickness); – grade. Example: 60317-44 IEC 4,00 mm x 1,00 mm grade A2
- Status
- Published
- Publication Date
- 19-May-1997
- Withdrawal Date
- 30-Nov-1997
- Technical Committee
- CLC/TC 55 - Winding wires
- Drafting Committee
- IEC/TC 55 - IEC_TC_55
- Parallel Committee
- IEC/TC 55 - IEC_TC_55
- Current Stage
- 6060 - Document made available - Publishing
- Start Date
- 20-May-1997
- Completion Date
- 20-May-1997
Overview
EN 60317-44:1997 (identical to IEC 60317-44:1997) specifies requirements for aromatic polyimide tape wrapped rectangular copper winding wire of class 240. This standard, published by the CLC, defines the necessary properties and test methods for insulated copper wire used in electrical windings with a high thermal performance. The insulation system consists of one or two layers of aromatic polyimide tape, heat-sealed to form a continuous and adherent sheath, providing exceptional thermal and electrical reliability.
Key Topics
Thermal Performance (Class 240)
The wire must have a temperature index of 240 and withstand a minimum heat shock temperature of 260°C. In some countries, such as the USA, Canada, and Russia, this wire is classified as Class 220.Dimensions
Covered conductor dimensions:- Width: 2.00 mm to 16.00 mm
- Thickness: 0.80 mm to 5.60 mm
Specified combinations and ratios are referenced from IEC 60317-0-2.
Insulation System
- Aromatic polyimide tape (single or double layer)
- Tape may be adhesive-coated on one or both sides
- Adhesive often uses fluorinated ethylene propylene (FEP)
- Heat sealing processes ensure a robust and continuous sheath
Electrical and Mechanical Properties
- Adherence and flexibility after winding and stretching
- Electrical resistance measured at 20°C
- Minimum elongation and limited springback
- Minimum breakdown voltage thresholds based on tape type and grade
Testing and Quality
- Methods for testing properties are specified in IEC 851
- All tests use standardized temperature and humidity conditions
- Specific tests for breakdown voltage, elongation, springiness, adhesion, and heat shock
Applications
EN 60317-44:1997 applies to environments where high-performance winding wires are critical. Typical applications include:
Electric motors and generators
Providing reliable insulation for coils exposed to high operating temperatures and demanding mechanical stresses.Transformers
Ensuring long service life and energy efficiency with robust heat and voltage resistance.Specialist electrical equipment
Used in aerospace, industrial, and automotive sectors for devices requiring superior insulation and thermal stability.Custom coil windings
Suited for situations where rectangular copper wire geometry and high thermal class are essential for performance and compact design.
Adherence to this standard assures that winding wires perform consistently in high-temperature applications, supporting equipment reliability and safety.
Related Standards
For a complete understanding and implementation in the field of winding wires and coils insulation, the following standards should also be considered:
- IEC 60317-0-2: General requirements for enamelled rectangular copper wire
- IEC 851: Methods of test for winding wires
- IEC 172: Test procedure for the determination of temperature index of enamelled winding wires
- ISO 3: Preferred numbers - Series of preferred numbers
Compliance with EN 60317-44 and related standards ensures suitability for demanding electrical insulation applications, facilitating international trade, interoperability, and technical reliability.
Relations
- Effective Date
- 10-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 03-Feb-2026
- Effective Date
- 28-Jan-2023
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Frequently Asked Questions
EN 60317-44:1997 is a standard published by CLC. Its full title is "Specifications for particular types of winding wires - Part 44: Aromatic polyimide tape wrapped rectangular copper wire, class 240". This standard covers: IEC 60317-44:1997 specifies the requirements of tape wrapped rectangular 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 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 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/thickness are given in IEC 60317-0-2. When a reference is made to winding wire according to this standard, the following information should be given: – reference to IEC 60317-44; – dimension of the nominal conductor (width x thickness); – grade. Example: 60317-44 IEC 4,00 mm x 1,00 mm grade A2
IEC 60317-44:1997 specifies the requirements of tape wrapped rectangular 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 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 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/thickness are given in IEC 60317-0-2. When a reference is made to winding wire according to this standard, the following information should be given: – reference to IEC 60317-44; – dimension of the nominal conductor (width x thickness); – grade. Example: 60317-44 IEC 4,00 mm x 1,00 mm grade A2
EN 60317-44:1997 is classified under the following ICS (International Classification for Standards) categories: 29.060.10 - Wires. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 60317-44:1997 has the following relationships with other standards: It is inter standard links to ISO 3:1973, EN ISO 11064-3:1999, EN 60172:1994, EN 61858-2:2014, EN 60317-44:1997/A1:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 60317-44:1997 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2001
Specifications for particular types of winding wires - Part 44: Aromatic polyimide
tape wrapped rectangular copper wire, class 240
Specifications for particular types of winding wires -- Part 44: Aromatic polyimide tape
wrapped rectangular copper wire, class 240
Technische Lieferbedingungen für bestimmte Typen von Wickeldrähten -- Teil 44:
Flachdrähte aus Kupfer, mit Band aus aromatischem Polyimid umwickelt, Klasse 240
Spécifications pour types particuliers de fils de bobinage -- Partie 44: Fil de section
rectangulaire en cuivre recouvert d'un ruban de polyimide aromatique, classe 240
Ta slovenski standard je istoveten z: EN 60317-44:1997
ICS:
29.060.10 Žice Wires
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
NORME
CEI
INTERNATIONALE
IEC
60317-44
INTERNATIONAL
Première édition
STANDARD
First edition
1997-03
Spécifications pour types particuliers
de fils de bobinage –
Partie 44:
Fil de section rectangulaire en cuivre
recouvert d'un ruban de polyimide
aromatique, classe 240
Specifications for particular types
of winding wires –
Part 44:
Aromatic polyimide tape wrapped
rectangular copper wire, class 240
IEC 1997 Droits de reproduction réservés Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni utilisée No part of this publication may be reproduced or utilized in
sous quelque forme que ce soit et par aucun procédé, électronique any form or by any means, electronic or mechanical, including
ou mécanique, y compris la photocopie et les microfilms, sans photocopying and microfilm, without permission in writing from
l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE L
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
60317-44 © IEC:1997 – 3 –
CONTENTS
Page
FOREWORD . 5
INTRODUCTION . 7
Clause
1 Scope. 9
2 Normative references. 9
3 Definitions and general notes on methods of test . 11
4 Dimensions. 13
5 Electrical resistance. 15
6 Elongation. 15
7 Springiness. 17
8 Flexibility and adherence . 17
9 Heat shock. 17
10 Cut-through. 17
11 Resistance to abrasion . 17
12 Resistance to solvents. 17
13 Breakdown voltage. 17
14 Continuity of insulation. 19
15 Temperature index. 19
16 Resistance to refrigerants. 19
17 Solderability. 19
18 Heat or solvent bonding . 19
19 Dielectric dissipation factor . 19
20 Resistance to transformer oil . 19
21 Loss of mass . 21
30 Packaging . 21
60317-44 © IEC:1997 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –
Part 44: Aromatic polyimide tape wrapped
rectangular copper wire, class 240
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international co-operation on all questions concerning standardization in the electrical and electronic
fields. To this end and in addition to other activities, the IEC publishes International Standards. Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt
with may participate in this preparatory work. International, governmental and non-governmental organizations
liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the
form of standards, technical reports or guides and they are accepted by the National Committees in that
sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the
subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60317-44 has been prepared by IEC technical committee 55:
Winding wires.
The text of this standard is based on the following documents:
FDIS Report on voting
55/541/FDIS 55/571/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.
60317-44 © IEC:1997 – 7 –
INTRODUCTION
This part of IEC 317 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 851);
2) specifications (IEC 317);
3) packaging (IEC 264).
60317-44 © IEC:1997 – 9 –
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –
Part 44: Aromatic polyimide tape wrapped
rectangular copper wire, class 240
1 Scope
This part of IEC 317 specifies the requirements of tape wrapped rectangular 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 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 dimensions covered by this standard is
...



