EN 60034-27-3-2016 en Rotating electrical machines - Part 27-3 Dielectric dissipation factor measurement on stator winding insulation of rotating electrical machines.pdf

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1、Rotating electrical machinesPart 27-3: Dielectric dissipation factor measurement on stator winding insulation of rotating electrical machinesBS EN 60034-27-3:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implemen

2、tation of EN 60034-27-3:2016. It is identical to IEC 60034-27-3:2015. The UK participation in its preparation was entrusted to TechnicalCommittee PEL/2, Rotating electrical machinery.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication doe

3、s not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 90118 8ICS 29.160.01Compliance with a British Standard cannot confer immunity fromlegal

4、obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60034-27-3:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60034-27-3 June

5、2016 ICS 29.160 English Version Rotating electrical machines - Part 27-3: Dielectric dissipation factor measurement on stator winding insulation of rotating electrical machines (IEC 60034-27-3:2015) Machines lectriques tournantes - Partie 27-3: Mesure du facteur de dissipation dilectrique sur le sys

6、tme disolation des enroulements statoriques des machines lectriques tournantes (IEC 60034-27-3:2015) Drehende elektrische Maschinen - Teil 27-3: Messung des dielektrischen Verlustfaktors an der Stnderwicklungsisolierung drehender elektrischer Maschinen (IEC 60034-27-3:2015) This European Standard wa

7、s approved by CENELEC on 2016-01-20. 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 suc

8、h 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

9、 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 Ma

10、cedonia, 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 Comit E

11、uropen de Normalisation Electrotechnique Europisches Komitee fr 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 60034-27-3:2016 E BS EN

12、60034-27-3:2016EN 60034-27-3:2016 2 European foreword The text of document 2/1803/FDIS, future edition 1 of IEC 60034-27-3, prepared by IEC/TC 2 “Rotating machinery“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60034-27-3:2016. The following dates are fixed: latest da

13、te by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2016-12-24 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2019-06-24 Attention is drawn to the possibility t

14、hat 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 60034-27-3:2015 was approved by CENELEC as a European Standard

15、without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated : IEC TS 60034-27 NOTE Harmonized as CLC/TS 60034-27. BS EN 60034-27-3:2016EN 60034-27-3:2016 3 Annex ZA (normative) Normative references to international publications w

16、ith 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 docume

17、nt (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.cenele

18、c.eu. Publication Year Title EN/HD Year IEC 60060-1 - High-voltage test techniques - Part 1: General definitions and test requirements EN 60060-1 - IEC 60060-2 - High-voltage test techniques - Part 2: Measuring systems EN 60060-2 - BS EN 60034-27-3:2016 2 IEC 60034-27-3:2015 IEC 2015 CONTENTS FOREWO

19、RD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 7 4 Theory and measuring techniques . 8 4.1 Dielectric dissipation factor measurement . 8 4.2 Analogue Schering bridge . 10 4.3 Transformer ratio arm bridge. 11 4.4 Digital phase shift measurement . 12 5 Test procedur

20、es 13 5.1 General . 13 5.2 Winding bars and coils 15 5.2.1 Test object preparation 15 5.2.2 Guarding techniques 15 5.2.3 Measuring procedure . 17 5.3 Complete windings 17 6 Test results . 18 6.1 General . 18 6.2 Winding bars and coils 19 6.3 Complete windings 20 7 Test report . 21 7.1 General . 21 7

21、.2 New coils, bars and winding 21 7.3 Operational aged winding . 22 Annex A (informative) Relationship between power factor and dissipation factor 24 Bibliography 26 Figure 1 Parallel circuit and vector diagram . 8 Figure 2 Series circuit and vector diagram . 9 Figure 3 Dielectric losses with increa

22、sing voltage (schematic) . 10 Figure 4 High voltage Schering bridge Basic circuit . 11 Figure 5 Transformer ratio arm bridge 12 Figure 6 Schematic test set-up of a digital dissipation factor measuring system with principle current oscillogram . 13 Figure 7 Example of a curve of tan versus voltage ra

23、tio U/ UNmeasured in voltage steps of 0,2 UN14 Figure 8 Arrangement with guard rings electrodes on test objects with insulation gap (example of preferred insulation gap and guard ring electrode dimensions) 16 Figure 9 Application of guard ring electrodes on top of stress control coating 17 Figure A.

24、1 Phasor diagram 24 Table 1 Maximum values of dielectric dissipation factor of single bars and coils in new condition with guard ring electrodes up to a rated voltage of UN= 21 kV 19 BS EN 60034-27-3:2016IEC 60034-27-3:2015 IEC 2015 3 Table A.1 Comparison between correlating values of dielectric pow

25、er factor cos and dielectric dissipation factor tan and their difference . 25 BS EN 60034-27-3:2016 4 IEC 60034-27-3:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ROTATING ELECTRICAL MACHINES Part 27-3: Dielectric dissipation factor measurement on stator winding insulation of rotating el

26、ectrical machines 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 interna-tional co-operation on all questions concerning sta

27、ndardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Tech-nical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publica-tion(s)”). Their prepa

28、ration 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 w

29、ith the Interna-tional 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 s

30、ubjects since each technical committee has representation from all inter-ested 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 techn

31、ical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinter-pretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum ext

32、ent possible in their national and regional publications. Any divergence be-tween 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 provid

33、e 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 it

34、s 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 ex-penses

35、 arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publica-tions. 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) Attenti

36、on 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 60034-27-3 has been prepared by IEC technical committee 2: Rotating machin

37、ery. This first edition cancels and replaces the first edition of IEC TR 60894 published in 1987. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) digital measurement of dissipation factor and ca

38、pacitance included; b) limits for dissipation factor values given; c) detailed description of measuring techniques; d) extension of scope to complete windings. BS EN 60034-27-3:2016IEC 60034-27-3:2015 IEC 2015 5 The text of this standard is based on the following documents: FDIS Report on voting 2/1

39、803/FDIS 2/1804/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 60034 series, published under th

40、e general title Rotating electrical machines, 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:/webstore.iec.ch“ in the data re-lated to the specific publication.

41、At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. BS EN 60034-27-3:2016 6 IEC 60034-27-3:2015 IEC 2015 INTRODUCTION This International Standard provides guidelines for dielectric dissipation factor measurements on form-wound stator bars or coils

42、 as well as for complete windings. The dielectric dissipation factor is a measure of the dielectric losses in the stator winding in-sulation. Measurement of dielectric dissipation factor is an appropriate means of assessing the quality of new and also aged stator winding insulation of rotating elect

43、rical machines. Es-pecially, the method is useful for assessing the uniform quality of manufacturing and the die-lectric behaviour of the insulation as a whole. For aged stator windings, the dielectric dissipa-tion factor provides information about insulation condition. The dielectric dissipation fa

44、ctor measurements give no indication of the distribution of loss within the insulation and in contrast to off-line partial discharge measurements do not permit localization of weak points of the insulation system. The main principle is to measure the dielectric dissipation factor over a range of vol

45、tages and to derive different characteristic dielectric loss parameters as basis for the evaluation. Empirical limits verified in practice can be used as a basis for evaluating the quality of stator winding insulation systems in manufacturing. Furthermore, trend evaluation, e.g. diagnostic tests as

46、part of the functional evaluation of insulation systems or in connection with servicing and overhaul of rotating machines, can also provide information on ageing processes, neces-sary further measures and intervals between overhauls. However, such trend evaluations cannot be used to predict the time

47、 to failure of a stator winding insulation. BS EN 60034-27-3:2016IEC 60034-27-3:2015 IEC 2015 7 ROTATING ELECTRICAL MACHINES Part 27-3: Dielectric dissipation factor measurement on stator winding insulation of rotating electrical machines 1 Scope This part of IEC 60034 provides guidelines for the te

48、st procedures and the interpretation of test results for dielectric dissipation factor measurements on the stator winding insulation of rotating electrical machines. These guidelines are valid for rotating electrical machines with conductive slot coatings operating at a rated voltage of 6 kV and hig

49、her. This standard applies to individual form-wound stator bars and coils outside a core (unin-stalled), individual stator bars and coils installed in a core and complete form-wound stator winding of machines in new or aged condition. This International Standard applies to all kind of vacuum impregnated or resin-rich (fully-loaded) taped bars, coils and complete windings. It is not applicable to non-impregnated indi-vidual bars and coils or non-impregnated complete w