1、 IEC 61858-1 Edition 1.0 2014-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical insulation systems Thermal evaluation of modifications to an established electrical insulation system (EIS) Part 1: Wire-wound winding EIS Systmes disolation lectrique valuation thermique des modifications apport
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20、ERNATIONAL STANDARD NORME INTERNATIONALE Electrical insulation systems Thermal evaluation of modifications to an established electrical insulation system (EIS) Part 1: Wire-wound winding EIS Systmes disolation lectrique valuation thermique des modifications apportes un systme disolation lectrique (S
21、IE) prouv Partie 1: Systme disolation lectrique enroulements fils INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE V ICS 29.080.30 PRICE CODE CODE PRIX ISBN 978-2-8322-1410-7 Registered trademark of the International Electrotechnical Commission Marque dpose de la
22、Commission Electrotechnique Internationale 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 agr. colour inside 2 61858-1 IEC:2014 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1
23、Scope 7 2 Normative references 7 3 Terms and definitions 9 4 General considerations 11 5 Substitution of phase or ground insulation . 13 5.1 Generically identical . 13 5.2 Substitution or addition of selected components and additives 13 6 Substitution of winding wire . 14 6.1 Non bondable winding wi
24、re . 14 6.2 Bondable winding wire 15 6.3 Substitution of conductor material . 16 7 Substitution of impregnating resin/varnish . 17 7.1 Thermal class determination . 17 7.2 Evaluation . 18 7.2.1 Thermal classes equal or better . 18 7.2.2 One thermal class lower 18 7.2.3 Other criteria . 18 8 Substitu
25、tion with other EIM 18 8.1 Technically equivalent materials . 18 8.2 Previous evaluation 18 8.3 Other 18 9 Evaluation of additions 19 9.1 Addition of an impregnating resin/varnish 19 9.2 Addition of other components 19 10 Chemical compatibility of a combination of materials . 20 10.1 General . 20 10
26、.2 Construction . 20 10.2.1 Test apparatus 20 10.2.2 Material specimens 20 10.2.3 Contents of tube 20 10.3 Test procedure 21 10.3.1 Preparation of tubes 21 10.3.2 Thermal conditioning . 21 10.3.3 Opening procedure 21 10.3.4 Evaluation of samples . 22 11 Single-point thermal ageing test (procedure C)
27、 22 11.1 Test objects 22 11.2 Establishing the EIS relative thermal endurance index (EIS RTE) . 22 11.3 Interpretation of results . 23 12 Full thermal aging test (procedure D) . 23 Annex A (normative) Classes of winding wire . 24 Annex B (informative) Visual representations of coils . 26 B.1 Form wo
28、und coils 26 61858-1 IEC:2014 3 B.2 Precision-wound coil . 27 B.3 Random-wound coil 28 Bibliography 30 Figure 1 Overview of evaluation methods . 12 Figure 2 Substitution of phase and ground insulation . 13 Figure 3 Substitution of non-bondable winding wire 14 Figure 4 Substitution of bondable windin
29、g wire 15 Figure 5 Substitution of conductor material 16 Figure 6 Substitution of impregnating resin/varnish 17 Figure 7 Additions of resins/varnishes and other components used in combination with the EIMs evaluated in the EIS 19 Figure B.1 Form-wound coil comparison 26 Figure B.2 Form-wound coil co
30、mparison Close-up 26 Figure B.3 Form-wound coil comparison Different angle 27 Figure B.4 Form-wound coil detail 27 Figure B.5 Examples of precision-wound coils . 28 Figure B.6 Example of precision-wound coil Close-up . 28 Figure B.7 Example of random-wound coil . 29 Figure B.8 Example of random-woun
31、d coil Close-up . 29 Table 1 Thermal ageing test methods for resin/varnishes . 18 Table A.1 Winding wire types Round copper or aluminum conductor . 24 4 61858-1 IEC:2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL INSULATION SYSTEMS THERMAL EVALUATION OF MODIFICATIONS TO AN ESTABLISHED EL
32、ECTRICAL INSULATION SYSTEM (EIS) Part 1: Wire-wound winding EIS 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
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42、cation 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 61858-1 has been prepared by IEC tec
43、hnical committee 112: Evaluation and qualification of electrical insulating materials and systems. This first edition of IEC 61858-1 cancels and replaces the third edition of IEC 61858, published in 2008. It constitutes a technical and editorial revision. This edition includes the following signific
44、ant technical changes with respect to the previous edition: a) this part is specifically for wire-wound winding EIS; b) new figures and charts support the contents. 61858-1 IEC:2014 5 The text of this standard is based on the following documents: CDV Report on voting 112/252/CDV 112/275/RVC Full inf
45、ormation 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 61858 series, published under the general title Electrical i
46、nsulation systems Thermal evaluation of modifications to an established electrical insulation system (EIS), 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 web site under “http:/webst
47、ore.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. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be u
48、seful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 61858-1 IEC:2014 INTRODUCTION This International Standard describes procedures for the evaluation of changes to an established electrical insulation system (EIS) for wire-wound e
49、lectro technical devices and the effect of these changes on the thermal classification of the established EIS. This Part 1 of IEC 61858 is for wire-wound winding EIS. Part 2 of IEC 61858 addresses modifications of form-wound winding EIS. General principles for evaluation and qualification of EIS can be found in IEC 60505. Unless the procedures of thi
