Winding wires - Test methods - Part 4: Chemical properties

IEC 60851-4:2016 specifies the following chemical properties tests: - Test 12: Resistance to solvents; - Test 16: Resistance to refrigerants; - Test 17: Solderability; - Test 20: Resistance to transformer oil. For definitions, general notes on methods of test and the complete series of methods of test for winding wires see IEC 60851-1. This third edition cancels and replaces the second edition published in 1996, Amendment 1:1997 and Amendment 2:2005. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - revision of Test 16: Resistance to refrigerants; - revision of Test 17: Solderability; - new Annex A for alternative refrigerants to monochlorodifluoromethane (R 22). Keywords: chemical properties tests, test for winding wires

Wickeldrähte - Prüfverfahren - Teil 4: Chemische Eigenschaften

Fils de bobinage - Méthodes d’essai - Partie 4: Propriétés chimiques

L'IEC 60851-4:2016 spécifie les essais de propriétés chimiques suivants: - Essai 12: Résistance aux solvants; - Essai 16: Résistance aux réfrigérants; - Essai 17: Brasabilité; - Essai 20: Résistance à l'huile de transformateur. Pour les définitions, les notes générales concernant les méthodes d'essai et les séries complètes des méthodes d'essai des fils de bobinage, voir l'IEC 60851-1. Cette troisième édition annule et remplace la deuxième édition parue en 1996, l'Amendement 1:1997 et l'Amendement 2:2005. Cette édition constitue une révision technique. La présente édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - révision de l'Essai 16: Résistance aux réfrigérants; - révision de l'Essai 17: Brasabilité; - nouvelle Annexe A relative aux réfrigérants de remplacement pour le monochlorodifluorométhane (R 22). Mots clés: les essais de propriétés chimiques, d'essai des fils de bobinage

Navijalne žice - Preskusne metode - 4. del: Kemične lastnosti (IEC 60851-4:2016)

Ta del standarda IEC 60851 določa naslednje preskuse kemičnih lastnosti:
• Preskus 12: odpornost na topila;
• Preskus 16: odpornost na hladilna sredstva;
• Preskus 17: možnost spajkanja;
• Preskus 20: odpornost na transformatorsko olje.
Za opredelitve, splošne opombe glede preskusnih metod in celoten nabor preskusnih metod za navijalne žice glej standard IEC 60851-1.

General Information

Status
Published
Publication Date
13-Oct-2016
Technical Committee
Drafting Committee
Current Stage
6060 - Document made available
Due Date
28-Apr-2017

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SLOVENSKI STANDARD
SIST EN 60851-4:2016
01-december-2016
1DGRPHãþD
SIST EN 60851-4:2001
SIST EN 60851-4:2001/A1:2002
SIST EN 60851-4:2001/A2:2005
1DYLMDOQHåLFH3UHVNXVQHPHWRGHGHO.HPLþQHODVWQRVWL ,(&
Winding wires - Test methods - Part 4: Chemical properties (IEC 60851-4:2016)
Wickeldrähte - Prüfverfahren - Teil 4: Chemische Eigenschaften
Fils de bobinage - Méthodes d'essai - Partie 4: Propriétés chimiques
Ta slovenski standard je istoveten z: EN 60851-4:2016
ICS:
29.060.10 Žice Wires
SIST EN 60851-4:2016 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60851-4:2016
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SIST EN 60851-4:2016
EUROPEAN STANDARD EN 60851-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2016
ICS 29.060.10 Supersedes EN 60851-4:1996
English Version
Winding wires - Test methods - Part 4: Chemical properties
(IEC 60851-4:2016)

Fils de bobinage - Méthodes d'essai - Partie 4: Propriétés Wickeldrähte - Prüfverfahren - Teil 4: Chemische

chimiques Eigenschaften
(IEC 60851-4:2016) (IEC 60851-4:2016)

This European Standard was approved by CENELEC on 2016-08-10. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels

© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60851-4:2016 E
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SIST EN 60851-4:2016
EN 60851-4:2016
European foreword

The text of document 55/1578/FDIS, future edition 3 of IEC 60851-4, prepared by IEC/TC 55 "Winding

wires" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN 60851-4:2016.
The following dates are fixed:
(dop) 2017-05-10
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2019-08-10
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60851-4:1996

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such

patent rights.
Endorsement notice

The text of the International Standard IEC 60851-4:2016 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.
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SIST EN 60851-4:2016
EN 60851-4:2016
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 When 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 60296 - Fluids for electrotechnical applications - EN 60296 -
Unused mineral insulating oils for
transformers and switchgear
IEC 60554-1 1977 Specification for cellulosic papers for - -
electrical purposes -
Part 1: Definitions and general
requirements
IEC 60851-1 - Winding wires - Test methods - EN 60851-1 -
Part 1: General
IEC 60851-3 2009 Winding wires - Test methods - EN 60851-3 2009
Part 3: Mechanical properties
IEC 60851-5 2008 Winding wires - Test methods - EN 60851-5 2008
Part 5: Electrical properties
ISO 9453 - Soft solder alloys - Chemical compositions EN ISO 9453 -
and forms
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SIST EN 60851-4:2016
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SIST EN 60851-4:2016
IEC 60851-4
Edition 3.0 2016-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Winding wires – Test methods –
Part 4: Chemical properties
Fils de bobinage – Méthodes d’essai –
Partie 4: Propriétés chimiques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.10 ISBN 978-2-8322-3512-6

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 60851-4:2016
– 2 – IEC 60851-4:2016 © IEC 2016
CONTENTS

FOREWORD ......................................................................................................................... 4

INTRODUCTION ................................................................................................................... 6

1 Scope ............................................................................................................................ 7

2 Normative references..................................................................................................... 7

3 Test 12: Resistance to solvents ..................................................................................... 7

3.1 General ................................................................................................................. 7

3.2 Equipment ............................................................................................................ 8

3.3 Procedure ............................................................................................................. 8

4 16: Resistance to refrigerants ........................................................................................ 9

4.1 General ................................................................................................................. 9

4.2 Extraction ............................................................................................................. 9

4.2.1 Principle ........................................................................................................ 9

4.2.2 Equipment ..................................................................................................... 9

4.2.3 Specimen..................................................................................................... 11

4.2.4 Procedure .................................................................................................... 11

4.2.5 Result .......................................................................................................... 12

4.3 Breakdown voltage .............................................................................................. 12

4.3.1 Principle ...................................................................................................... 12

4.3.2 Procedure .................................................................................................... 12

4.3.3 Result .......................................................................................................... 13

5 Test 17: Solderability ................................................................................................... 13

5.1 General ............................................................................................................... 13

5.2 Equipment .......................................................................................................... 13

5.3 Procedure ........................................................................................................... 14

6 Test 20: Resistance to hydrolysis and to transformer oil ............................................... 14

6.1 General ............................................................................................................... 14

6.2 Round wire ......................................................................................................... 15

6.2.1 Equipment ................................................................................................... 15

6.2.2 Specimens ................................................................................................... 15

6.2.3 Procedure .................................................................................................... 15

6.3 Rectangular wire ................................................................................................. 16

6.3.1 Equipment ................................................................................................... 16

6.3.2 Specimens ................................................................................................... 16

6.3.3 Procedure .................................................................................................... 16

Annex A (informative) Alternative refrigerants to monochlorodifluoromethane ...................... 18

Bibliography ....................................................................................................................... 19

Figure 1 – Pencil and specimen for solvent test ..................................................................... 8

Figure 2 – Refrigerant extractable test siphon cup ............................................................... 10

Figure 3 – Condenser coil ................................................................................................... 11

Figure 4 – Example of carrier for solderability test ............................................................... 14

Table 1 – Pencil hardness ..................................................................................................... 9

Table 2 – Volume of components ........................................................................................ 16

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SIST EN 60851-4:2016
IEC 60851-4:2016 © IEC 2016 – 3 –

Table A.1 – Alternative refrigerants to R 22 ......................................................................... 18

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SIST EN 60851-4:2016
– 4 – IEC 60851-4:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
WINDING WIRES – TEST METHODS –
Part 4: Chemical properties
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

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). 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. 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 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 IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

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 60851-4 has been prepared by IEC technical committee 55:

Winding wires.
This third edition cancels and replaces the second edition published in 1996,

Amendment 1:1997 and Amendment 2:2005. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) revision of Test 16: Resistance to refrigerants;
b) revision of Test 17: Solderability;
c) new Annex A for alternative refrigerants to monochlorodifluoromethane (R 22).
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SIST EN 60851-4:2016
IEC 60851-4:2016 © IEC 2016 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
55/1578/FDIS 55/1580/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 the parts in the IEC 60851 series, published under the general title Winding Wires

– Test methods, 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 website 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.
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SIST EN 60851-4:2016
– 6 – IEC 60851-4:2016 © IEC 2016
INTRODUCTION

The IEC 60851 series is part of a group of International Standards which define insulated

wires used for windings in electrical equipment:
1) IEC 60851 series, Winding wires – Test methods;
2) IEC 60317 series, Specifications for particular types of winding wires;
3) IEC 60264 series, Packaging of winding wires.
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SIST EN 60851-4:2016
IEC 60851-4:2016 © IEC 2016 – 7 –
WINDING WIRES – TEST METHODS –
Part 4: Chemical properties
1 Scope
This part of IEC 60851 specifies the following chemical properties tests:
• Test 12: Resistance to solvents;
• Test 16: Resistance to refrigerants;
• Test 17: Solderability;
• Test 20: Resistance to transformer oil.

For definitions, general notes on methods of test and the complete series of methods of test

for winding wires see IEC 60851-1.
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 60296, Fluids for electrotechnical applications – Unused mineral insulating oils for

transformers and switchgear

IEC 60554-1:1977, Specification for cellulosic papers for electrical purposes – Part 1:

Definitions and general requirements
IEC 60851-1, Winding wires – Test methods – Part 1: General
IEC 60851-3:2009, Winding wires – Test methods – Part 3: Mechanical properties
IEC 60851-5:2008, Winding wires – Test methods – Part 5: Electrical properties
ISO 9453, Soft solder alloys – Chemical compositions and forms
3 Test 12: Resistance to solvents
3.1 General

This test is applicable to enamelled round wire with a nominal conductor diameter over

0,250 mm and to enamelled rectangular wire.

The test is not suitable for round wires with a nominal conductor diameter up to and including

0,250 mm.

Resistance to solvents is expressed by the pencil hardness of the wire after solvent

treatment.
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SIST EN 60851-4:2016
– 8 – IEC 60851-4:2016 © IEC 2016
3.2 Equipment
The following solvents shall be used:
• standard solvent as specified below, or
• solvent as agreed between purchaser and supplier.
The standard solvent shall be a mixture of:
• 60 % by volume white spirit with maximum aromatic content of 18 %;
• 30 % by volume xylene;
• 10 % by volume butanol.

The pencil to be used shall be a lead pencil of the hardness specified in the relevant

standard. Before each test, the point of the pencil shall be sharpened with a smooth-cut file to

form an angle of 60° symmetrical about the axis of the lead according to Figure 1.

60°
60°
1 3
IEC
Key
1 Winding wire specimen
2 Pencil
3 Test surface
NOTE Angle tolerances ±5°.
Figure 1 – Pencil and specimen for solvent test
3.3 Procedure

A straight piece of wire, approximately 150 mm in length, shall be preconditioned for

(10 ± 1) min at (130 ± 3) °C in an oven with forced air circulation. A substantial length of the

wire shall then be immersed in standard solvent contained in a glass cylinder and shall be

maintained therein at a temperature of (60 ± 3) °C for a period of (30 ± 3) min. The wire shall

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SIST EN 60851-4:2016
IEC 60851-4:2016 © IEC 2016 – 9 –

then be removed from the solvent. The hardness of the wire surface shall then be determined

in the following manner within a period of 30 s after removal from the solvent.

The specimen to be tested shall be laid on a smooth hard surface according to Figure 1. In

the case of rectangul
...

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