CLC TS 60034-18-33-2011 Rotating electrical machines - Part 18-33 Functional evaluation of insulation systems - Test procedures for form-wound windings - Multifactor evaluation by .pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationRotating electrical machinesPart 18-33: Functional evaluation of insulation systems Test procedures for form-wound windings Multifactor evaluation by endurance under simultaneous

2、 thermal and electrical stressesDD CLC/TS 60034-18-33:2011National forewordThis Draft for Development is the UK implementation of CLC/TS 60034-18-33:2011. It is identical to IEC/TS 60034-18-33:2010.The UK participation in its preparation was entrusted to Technical Committee PEL/2, Rotating electrica

3、l machinery.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 73274 4 ICS 29.080.30; 29.1

4、60.01Compliance with a British Standard cannot confer immunity from legal obligations.This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 31 July 2011.Amendments issued since publicationAmd. No. Date Text affectedDRAFT FOR DEVELOPMENTDD CLC/

5、TS 60034-18-33:2011TECHNICAL SPECIFICATION CLC/TS 60034-18-33 SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION March 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre:

6、 Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. CLC/TS 60034-18-33:2011 E ICS 29.160 Supersedes CLC/TR 60034-18-33:2004English version Rotating electrical machines - Part 18-33: Functional ev

7、aluation of insulation systems - Test procedures for form-wound windings - Multifactor evaluation by endurance under simultaneous thermal and electrical stresses (IEC/TS 60034-18-33:2010) Machines lectriques tournantes - Partie 18-33: valuation fonctionnelle des systmes disolation - Procdures dessai

8、 pour enroulements prforms - valuation fonctionnelle plusieurs facteurs par endurance sous contraintes thermiques et lectriques simultanes des systmes disolation utiliss dans les machines lectriques tournantes (CEI/TS 60034-18-33:2010) Drehende elektrische Maschinen - Teil 18-33: Funktionale Bewertu

9、ng von Isoliersystemen - Prfverfahren fr die multifunktionelle Bewertung von Wicklungen mit vorgeformten Elementen bei gleichzeitiger thermischer und elektrischer Beanspruchung der Isoliersysteme von drehenden Maschinen (IEC/TS 60034-18-33:2010) This Technical Specification was approved by CENELEC o

10、n 2011-02-21. CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force. CENELEC members are the national electrotech

11、nical 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, Romania, Slovakia, Slovenia, Spain, Sweden, Swit

12、zerland and the United Kingdom. DD CLC/TS 60034-18-33:2011CLC/TS 60034-18-33:2011 - 2 - Foreword The text of the Technical Specification IEC/TS 60034-18-33:2010, prepared by IEC TC 2, Rotating machinery, was submitted to the formal vote and was approved by CENELEC as CLC/TS 60034-18-33 on 2011-02-21

13、. This European Standard supersedes CLC/TR 60034-18-33:2004. The main changes with respect to CLC/TR 60034-18-33:2004 are as follows: a) the requirement to investigate the nature of interactions between thermal and electrical stresses has been abandoned; b) the use of single stress acceleration fact

14、ors has been removed; c) the selection of stress levels has been adjusted and the temperatures are now related to the thermal class temperature of the insulation system; d) the introduction of end-point criteria; e) a simplified method to display results. Attention is drawn to the possibility that s

15、ome of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following date was fixed: latest date by which the existence of the CLC/TS has to be announced at national level (doa) 2011-08-21

16、 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the Technical Specification IEC/TS 60034-18-33:2010 was approved by CENELEC as a Technical Specification without any modification. In the official version, for Bibliography, the following note has to be added for the standard indi

17、cated: IEC 60034-18-32 NOTE Harmonized as EN 60034-18-33. DD CLC/TS 60034-18-33:2011- 3 - CLC/TS 60034-18-33:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the applic

18、ation 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant E

19、N/HD applies. Publication Year Title EN/HD Year IEC 60034-15 - Rotating electrical machines - Part 15: Impulse voltage withstand levels of form-wound stator coils for rotating a.c. machines EN 60034-15 - IEC 60034-18-1 2010 Rotating electrical machines - Part 18-1: Functional evaluation of insulatio

20、n systems - General guidelines EN 60034-18-1 2010 IEC/TS 60034-18-42 - Rotating electrical machines - Part 18-42: Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters CLC/TS 60034-1

21、8-42 - IEC 60085 - Electrical insulation - Thermal evaluation and designation EN 60085 - IEC 60505 - Evaluation and qualification of electrical insulation systems EN 60505 - IEC 62539 - Guide for the statistical analysis of electrical insulation breakdown data - - DD CLC/TS 60034-18-33:2011 2 TS 600

22、34-18-33 IEC:2010(E) CONTENTS INTRODUCTION.6 1 Scope.7 2 Normative references .7 3 General description of test procedures .8 3.1 Relationship to other standards .8 3.2 Test procedures 8 3.3 Reference insulation system8 3.4 Characteristics of test procedures .8 3.4.1 General characteristics8 3.4.2 Ag

23、eing sub-cycle .8 3.4.3 Conditioning and diagnostic sub-cycle .8 3.5 Means of heating and definition of thermal stress level8 3.5.1 Methods of heating 8 3.5.2 Thermal stress level 9 3.5.3 Temperature measuring techniques.9 3.6 Means of electrical ageing.9 3.7 Definition of ageing sub-cycle duration

24、9 3.8 Reference operating conditions .10 3.8.1 General .10 3.8.2 Reference ageing factors.10 3.8.3 Reference conditioning factors 10 3.8.4 Reference diagnostic factors .10 4 Test objects10 4.1 Construction of test objects .10 4.1.1 General aspects 10 4.1.2 Considerations on turns and strands in test

25、 objects .10 4.2 Number of test specimens .11 4.3 Initial quality control tests11 4.4 Initial diagnostic tests11 5 Ageing sub-cycle 11 5.1 Ageing stress levels 11 5.2 Acceleration factors.11 5.3 Duration and number of ageing sub-cycles 12 5.4 Full multifactor testing procedure 12 5.5 Single-point te

26、sting procedure.12 6 Conditioning and diagnostic sub-cycle12 6.1 General .12 6.2 Mechanical tests .13 6.2.1 General mechanical test 13 6.2.2 Shake-table test 13 6.3 Moisture tests13 6.3.1 General moisture test 13 6.3.2 Moisture test with water immersion13 6.4 Voltage tests .13 6.5 Other diagnostic t

27、ests14 DD CLC/TS 60034-18-33:2011TS 60034-18-33 IEC:2010(E) 3 7 End point criteria 14 8 Analyzing the data, reporting and evaluation 14 8.1 Analyzing the data.14 8.2 Reporting 14 8.3 Evaluation .14 Bibliography15 Table 1 Guidelines for the selection of stress levels.11 DD CLC/TS 60034-18-33:2011 6 T

28、S 60034-18-33 IEC:2010(E) INTRODUCTION This document is being issued as a technical specification (according to the ISO/IEC Directives, Part 1, 3.1.1.1) for provisional application in the field of insulation systems for rotating electrical machines, because there is a need for guidance on how standa

29、rds in this field should be used to meet an identified need. This document is not to be regarded as an International Standard. It is proposed for provisional application so that information and experience of its use in practice may be gathered. Comments on the content of this document should be sent

30、 to the IEC Central Office. Part 18-1 of IEC 60034 presents general guidelines for the evaluation and classification of insulation systems used in rotating machines. Part 18-33 deals exclusively with insulation systems for form-wound windings and concentrates on multifactor functional evaluation und

31、er simultaneous thermal and electrical ageing. DD CLC/TS 60034-18-33:2011TS 60034-18-33 IEC:2010(E) 7 ROTATING ELECTRICAL MACHINES Part 18-33: Functional evaluation of insulation systems Test procedures for form-wound windings Multifactor evaluation by endurance under simultaneous thermal and electr

32、ical stresses 1 Scope This part of IEC 60034-18 describes procedures for evaluation of insulation systems by endurance testing where thermal and electrical stresses are applied simultaneously. The procedures are intended for insulation systems used, or proposed to be used, in a.c. electrical machine

33、s using form-wound windings. The test procedures provide a comparison of performance between reference and candidate systems at combinations of voltage and temperature which have been used separately to assess quality in the past and which are chosen to produce failures within a suitable timescale a

34、nd at stresses within practical limits. The outcome of the test on the candidate insulation system will indicate whether it is better or worse than the reference system with proven service experience but will not enable a lifetime in service to be calculated. The evaluation described in this technic

35、al specification does not include stress grading. The test procedures in this technical specification are not intended to establish the interaction between thermal and electrical stress in the ageing process nor endurance lines. If additional information is required on this interaction or in order t

36、o achieve endurance lines, it is necessary to undertake further tests in which electrical ageing is carried out at constant temperature and different voltages (IEC 60034-18-32) and thermal ageing is performed at different temperatures and constant voltage. 2 Normative references The following refere

37、nced documents are indispensable for the application 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. IEC 60034-15, Rotating electrical machines Part 15: Impulse voltage w

38、ithstand levels of form-wound stator coils for rotating a.c. machines IEC 60034-18-1:2010, Rotating electrical machines Part 18-1: Functional evaluation of insulation systems General guidelines IEC/TS 60034-18-42, Rotating electrical machines Part 18-42: Qualification and acceptance tests for partia

39、l discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters IEC 60085, Electrical insulation Thermal evaluation and designation IEC 60505, Evaluation and qualification of electrical insulation systems IEC 62539, Guide for the statist

40、ical analysis of electrical insulation breakdown data DD CLC/TS 60034-18-33:2011 8 TS 60034-18-33 IEC:2010(E) 3 General description of test procedures 3.1 Relationship to other standards The principles of IEC 60034-18-1 and IEC 60505 shall be followed, unless the recommendations or proposals of this

41、 part indicate otherwise. 3.2 Test procedures Testing may be performed either as a full multifactor or as a single point test procedure involving the application of temperature and voltage simultaneously. The single point test procedure provides a comparison at only one combination of thermal and el

42、ectrical stress. It results in less information on the performance of the candidate system, but this may be sufficient in some cases, such as when there are minor changes in the insulation system (see 5.5). The procedure may also be used as a quality test of an existing or proven insulation system.

43、3.3 Reference insulation system A reference insulation system shall be tested using a test procedure equivalent to that used for the candidate system in the same laboratory, using the same test equipment. The performance of the reference insulation system shall be established by service experience u

44、nder normal operating conditions. 3.4 Characteristics of test procedures 3.4.1 General characteristics In general, the tests are performed in cycles, each cycle consisting of ageing, conditioning and diagnostic sub-cycles. 3.4.2 Ageing sub-cycle The ageing sub-cycle includes the simultaneous applica

45、tion of thermal and electrical stresses. 3.4.3 Conditioning and diagnostic sub-cycle The conditioning sub-cycle involves the application of mechanical stress and moisture. It is followed by voltage tests and other diagnostic tests, as appropriate. When selecting the values of parameters used in this

46、 sub-cycle, the set of reference operating conditions (see 3.8) shall be used as guidance. The operations in the sub-cycle are performed in the order listed in Clause 6. 3.5 Means of heating and definition of thermal stress level 3.5.1 Methods of heating The specimens shall be heated at a rate typic

47、al of normal service. Any appropriate means of heating may be used, such as, a) total enclosure in an oven; b) heating of the conductors by a high current; c) the application of heating plates to the mainwall insulation. Approach (c) is preferred, as it permits better control of the sample temperatu

48、re within the test length and allows independent cooling of the stress grading region (see 3.6). It is likely that removal of gases (NOxand O3) will be required during high voltage ageing. DD CLC/TS 60034-18-33:2011TS 60034-18-33 IEC:2010(E) 9 3.5.2 Thermal stress level Where practicable, the therma

49、l stress level is defined as the average conductor temperature in the central part of the slot portion. Where it is considered impracticable to make an accurate assessment of this temperature, the temperature of the outer surface of the main insulation in the middle of the slot section may be used if the conductor is not the heat source. The method used for the measurement of thermal stress level shall be the same for the candidate and the reference systems. Where oven heating is a