EN IEC 60317-27-1:2020

Specifications for particular types of winding wires - Part 27-1: Paper tape covered round copper wire

IEC 60317-27-1:2020 specifies the requirements of paper tape covered round 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 diameters covered by this document is: – 0,500 mm up to and including 5,000 mm. The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1:2013. The paper tapes included in this document are restricted to those specified in IEC 60554-1 and IEC 60554-3-5.

Technische Lieferbedingungen für bestimmte Typen von Wickeldrähten - Teil 27-1: Runddrähte aus Kupfer, papierisoliert

Spécifications pour types particuliers de fils de bobinage - Partie 27-1: Fil de section circulaire en cuivre recouvert de ruban papier

IEC 60317-27-1:2020 spécifie les exigences relatives aux fils de bobinage de section circulaire en cuivre recouverts de ruban papier. Ce revêtement est constitué d'au moins deux couches de ruban papier et est essentiellement destiné au bobinage pour les transformateurs immergés dans l'huile. La gamme des diamètres nominaux des conducteurs couverts par le présent document est: – 0,500 mm jusques et y compris 5,000 mm inclus. Les diamètres nominaux des conducteurs sont spécifiés dans l’Article 4 de l’IEC 60317-0-1:2013. Les rubans papier concernés par le présent document sont limités à ceux qui sont spécifiés dans l’IEC 60554-1 et l’IEC 60554-3-5.

Specifikacije za posebne vrste navijalnih žic - 27-1. del: S papirnim trakom ovita okrogla bakrena žica (IEC 60317-27-1:2020)

Ta del standarda IEC 60317 določa zahteve za s papirnim trakom ovite okrogle bakrene navijalne žice. Ta ovoj je sestavljen iz dveh ali več plasti papirnega traku in je prvotno namenjen za navijanje tuljav za oljne transformatorje.
Razpon nazivnih premerov prevodnika, ki ga zajema ta dokument, je:
– od 0,500 mm do vključno 5000 mm.
Nazivni premeri prevodnika so navedeni v točki 4 standarda IEC 60317-0-1:2013.
Papirni trakovi, vključeni v tem dokumentu, so omejeni na tiste, ki so določeni v standardih IEC 60554-1 in IEC 60554-3-5.

General Information

• Status: Published
• Publication Date: 30-Jul-2020
• ICS: 29.060.10 - Wires
• Technical Committee: CLC/TC 55 - Winding wires
• Drafting Committee: IEC/TC 55 - IEC_TC_55
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 31-Jul-2020
• Due Date: 30-Oct-2020
• Completion Date: 31-Jul-2020
• Ref Project: SIST EN IEC 60317-27-1:2020 - Specifications for particular types of winding wires - Part 27-1: Paper tape covered round copper wire (IEC 60317-27-1:2020)

Relations

• Amended By: EN IEC 60317-27-1:2020/A1:2024 - Specifications for particular types of winding wires - Part 27-1: Paper tape covered round copper wire
• Effective Date: 14-Feb-2023

Overview

EN IEC 60317-27-1:2020 (IEC 60317-27-1:2020) specifies requirements for paper tape covered round copper winding wire. The standard covers wire in which the conductor is covered by two or more layers of paper tape, primarily intended for winding coils used in oil‑immersed transformers. It applies to nominal conductor diameters from 0.500 mm to 5.000 mm and limits the paper tape types to those listed in IEC 60554‑1 and IEC 60554‑3‑5. This part of the IEC 60317 series is to be used together with IEC 60317‑0‑1 (general requirements).

Key topics and technical requirements

The document defines the technical characteristics, test requirements and acceptance criteria for paper‑tape insulated winding wire, including:

• Dimensions and tolerances
  • Nominal conductor diameter, out‑of‑roundness, increase in diameter due to paper covering, and maximum overall diameter.
• Mechanical and electrical properties
  • Electrical resistance, elongation, springiness, flexibility and adherence.
• Durability and safety tests
  • Heat shock, cut‑through, resistance to abrasion and solvents, breakdown voltage, continuity of insulation, temperature index.
• Compatibility and ageing
  • Resistance to refrigerants, transformer oil, hydrolysis, loss of mass, pin‑hole testing and dielectric dissipation factor.
• Processing and assembly characteristics
  • Solderability, heat or solvent bonding properties.
• Packaging
  • Requirements for handling and packaging to preserve insulation and dimensions during transport and storage.

Test methods are consistent with the IEC 60317 series and relevant test standards (see Related Standards). The number of paper tape layers, tape type, thickness and overlap are typically agreed between purchaser and supplier.

Applications and users

This standard is essential for:

• Transformer manufacturers specifying winding wire for oil‑immersed transformers.
• Winding wire producers and converters that manufacture paper tape covered round copper wire.
• Electrical design and procurement teams creating material specifications and supplier contracts.
• Test laboratories and quality assurance teams performing conformity and type testing.
• Certification bodies assessing compliance with EN/IEC requirements.

Practical benefits include ensuring dimensional compatibility for tight windings, predictable electrical/mechanical performance in oil environments, and standardized tests for long‑term reliability.

Related standards

• IEC 60317‑0‑1 (General requirements for enamelled round copper wire)
• IEC 60554‑1 and IEC 60554‑3‑5 (Cellulosic papers for electrical purposes)
• IEC 60851 series (Winding wire test methods)
• IEC 60264 series (Packaging of winding wires)

Using EN IEC 60317‑27‑1:2020 helps stakeholders specify and verify paper tape covered round copper wire that meets industry expectations for performance, durability and interchangeability in transformer winding applications.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2020
Specifikacije za posebne vrste navijalnih žic - 27-1. del: S papirnim trakom ovita
okrogla bakrena žica (IEC 60317-27-1:2020)
Specifications for particular types of winding wires - Part 27-1: Paper tape covered round
copper wire (IEC 60317-27-1:2020)
Technische Lieferbedingungen für bestimmte Typen von Wickeldrähten - Teil 27-1:
Runddrähte aus Kupfer, papierisoliert (IEC 60317-27-1:2020)
Spécifications pour types particuliers de fils de bobinage - Partie 27-1: Fil de section
circulaire en cuivre recouvert de ruban papier (IEC 60317-27-1:2020)
Ta slovenski standard je istoveten z: EN IEC 60317-27-1:2020
ICS:
29.060.10 Žice Wires
77.150.30 Bakreni izdelki Copper products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60317-27-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2020
ICS 29.060.10
English Version
Specifications for particular types of winding wires - Part 27-1:
Paper tape covered round copper wire
(IEC 60317-27-1:2020)
Spécifications pour types particuliers de fils de bobinage - Technische Lieferbedingungen für bestimmte Typen von
Partie 27-1: Fil de section circulaire en cuivre recouvert de Wickeldrähten - Teil 27-1: Runddrähte aus Kupfer,
ruban papier papierisoliert
(IEC 60317-27-1:2020) (IEC 60317-27-1:2020)
This European Standard was approved by CENELEC on 2020-07-01. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60317-27-1:2020 E

European foreword
The text of document 55/1838/FDIS, future edition 1 of IEC 60317-27-1, prepared by IEC/TC 55
"Winding wires" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-04-01
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-07-01
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 60317-27-1:2020 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60264 (series) NOTE Harmonized as EN 60264 (series)
IEC 60317 (series) NOTE Harmonized as EN 60317 (series)
IEC 60851 (series) NOTE Harmonized as EN 60851 (series)

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60317-0-1 2013 Specifications for particular types of winding wires EN 60317-0-1 2014
- Part 0-1: General requirements - Enamelled
round 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 60317-27-1 ®
Edition 1.0 2020-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specifications for particular types of winding wires –

Part 27-1: Paper tape covered round copper wire

Spécifications pour types particuliers de fils de bobinage –

Partie 27-1: Fil de section circulaire en cuivre recouvert de ruban papier

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-8397-4

– 2 – IEC 60317-27-1:2020  IEC 2020
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 diameter . 7
4.2 Out of roundness of conductor . 7
4.3 Increase in diameter due to paper tape covering . 7
4.4 Maximum overall diameter . 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 . 8
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 . 9
Bibliography . 11

Table 1 – Increase in diameters . 8

IEC 60317-27-1:2020  IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATIONS FOR PARTICULAR TYPES OF WINDING WIRES –

Part 27-1: Paper tape covered round copper wire

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Com
...