CLC TS 60034-18-42-2011 Rotating electrical machines - Part 18-42 Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationRotating electrical machinesPart 18-42: Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical mac

2、hines fed from voltage convertersDD CLC/TS 60034-18-42:2011National forewordThis Draft for Development is the UK implementation of CLC/TS 60034-18-42:2011. It is identical to IEC/TS 60034-18-42:2008.The UK participation in its preparation was entrusted to Technical Committee PEL/2, Rotating electric

3、al 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 2011 ISBN 978 0 580 58146 5 ICS 29.080.30; 29

4、.160.01Compliance 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 March 2011.Amendments/corrigenda issued since publicationDate Text affectedDRAFT FOR DEVELOPMENTDD

5、 CLC/TS 60034-18-42:2011TECHNICAL SPECIFICATION CLC/TS 60034-18-42 SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION February 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management

6、 Centre: 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 60034-18-42:2011 E ICS 29.160 English version Rotating electrical machines - Part 18-42: Qualification and acceptance tests for

7、partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters (IEC/TS 60034-18-42:2008) Machines lectriques tournantes - Partie 18-42: Essais de qualification et dacceptation des systmes disolation lectrique rsistants aux dcharge

8、s partielles (Type II) utiliss dans des machines lectriques tournantes alimentes par convertisseurs de tension (CEI/TS 60034-18-42:2008) Drehende elektrische Maschinen - Teil 18-42: Qualifizierungs- und Abnahmeprfungen teilentladungsresistenter Isoliersysteme (Typ II) von drehenden elektrischen Masc

9、hinen, die von Spannungsumrichtern gespeist werden (IEC/TS 60034-18-42:2008) This Technical Specification was approved by CENELEC on 2011-01-25. 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 a

10、n appropriate form. It is permissible to keep conflicting national standards in force. 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

11、, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. CLC/TS 60034-18-42:2011 - 2 - Foreword The text of the Technical Specification IEC/TS 60034-18-42:2008, prepared by IEC TC 2, Rotating ma

12、chinery, was submitted to the formal vote and was approved by CENELEC as CLC/TS 60034-18-42 on 2011-01-25. Attention is drawn to the possibility that some 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 su

13、ch 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) 2011-07-25 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the Technical Specification IEC/TS 60034-18-42:2008 was approved by CENELEC as

14、a Technical Specification without any modification. DD CLC/TS 60034-18-42:2011- 3 - CLC/TS 60034-18-42:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application

15、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 EN/HD a

16、pplies. Publication Year Title EN/HD Year IEC 60034-18-1 - Rotating electrical machines - Part 18-1: Functional evaluation of insulation systems - General guidelines EN 60034-18-1 - IEC 60034-18-32 - Rotating electrical machines - Part 18-32: Functional evaluation of insulation systems - Test proced

17、ures for form-wound windings - Evaluation of electrical endurance EN 60034-18-32 - IEC/TS 60034-18-41 - Rotating electrical machines - Part 18-41: Qualification and type tests for Type I electrical insulation systems used in rotating electrical machines fed from voltage converters - - IEC 60216-3 -

18、Electrical insulating materials - Thermal endurance properties - Part 3: Instructions for calculating thermal endurance characteristics EN 60216-3 - IEC/TS 61251 - Electrical insulating materials - A.C. voltage endurance evaluation - Introduction - - IEC 61800-4 - Adjustable speed electrical power d

19、rive systems - Part 4: General requirements - Rating specifications for a.c. power drive systems above 1 000 V a.c. and not exceeding 35 kV EN 61800-4 - IEC 62068-1 - Electrical insulation systems - Electrical stresses produced by repetitive impulses - Part 1: General method of evaluation of electri

20、cal endurance EN 62068-1 - IEC 62539 - Guide for the statistical analysis of electrical insulation breakdown data - - DD CLC/TS 60034-18-42:2011 2 TS 60034-18-42 IEC:2008 CONTENTS INTRODUCTION.61 Scope.72 Normative references .73 Terms and definitions .84 Voltage effects from converter operation 104

21、.1 Voltages at the terminals of the converter-fed machine .104.2 Electrical stresses in the insulation system of machine windings .134.2.1 General .134.2.2 Voltages stressing the phase/phase insulation.144.2.3 Voltages stressing the phase/ground insulation .144.2.4 Voltages stressing the turn insula

22、tion 145 Type II insulation systems 146 Stress factors for converter-fed Type II insulation systems .157 Qualification and acceptance tests .167.1 General .167.2 Qualification tests167.3 Acceptance test.178 Qualification of turn insulation 178.1 General .178.2 Test methods 179 Qualification of groun

23、d wall insulation systems.199.1 General .199.2 Test methods 199.3 Use of 50 Hz or 60 Hz life data to predict the service life with a converter drive2010 Qualification of the stress control and corona protection system.2110.1 General .2110.2 Test methods 2211 Preparation of test objects2311.1 General

24、 .2311.2 Turn/turn samples .2311.3 Coils2412 Qualification test procedures 2412.1 General .2412.2 Turn/turn samples .2412.3 Coils2412.4 Stress control samples 2513 Qualification test pass criteria 2513.1 Turn/turn samples .2513.2 Coil samples .2513.3 Stress control samples 2614 Acceptance test for T

25、ype II insulation systems (Type test)2614.1 General .2614.2 Acceptance test methods 26DD CLC/TS 60034-18-42:2011TS 60034-18-42 IEC:2008 3 14.3 Acceptance test pass criteria.2615 Analysis, reporting and classification26Annex A (informative) .27Annex B (informative) .29Annex C (informative) .31Figure

26、1 Voltage impulse waveshape parameters 10Figure 2 Phase/phase voltage at the terminals of a machine fed by a 3-level converter 11Figure 3 Possible jump voltages (Uj) at the machine terminals associated with a converter drive12Figure 4 Maximum voltage enhancement at the machine terminals as a functio

27、n of cable length for various impulse rise times for a 2-level converter.13Figure 5 Design examples14Figure 6 Life lines of turn and mainwall insulation. .18Figure 7 Example of a life curve for a Type II mainwall insulation system.21Figure 8 Example of the construction of a turn/turn test sample for

28、 rectangular conductors23Figure A.1 Example of a simple converter voltage simulation circuit.27Figure A.2 Typical waveform generated from the spark gap oscillator 28Figure B.1 Representation of the phase to ground voltage at the terminals of a machine fed from a 3-level converter 29Table 1 Influence

29、 of features of the converter drive voltage on acceleration of ageing of components of Type II insulation systems.15Table B.1 Contribution to electrical ageing by 1 kHz impulses from a 3-level converter as a percentage of the ageing from the 50 Hz fundamental voltage for various values of voltage en

30、durance coefficient (n).30DD CLC/TS 60034-18-42:2011 6 TS 60034-18-42 IEC:2008 INTRODUCTION The approval of electrical insulation systems for use in rotating electrical machines driven from voltage converters is set out in two Technical Specifications. They separate the systems into those which are

31、not expected to experience partial discharge activity within specified conditions in their service lives (Type I) and those which are expected to withstand partial discharge activity in any part of the insulation system throughout their service lives (Type II). For both Type I and Type II insulation

32、 systems, the drive system integrator should inform the machine manufacturer what voltage will appear at the machine terminals in service. The machine manufacturer will then decide upon the severity of the tests appropriate for qualifying the insulation system. The severity is based on the impulse r

33、ise time, the peak to peak voltage and, in the case of Type II systems, the impulse repetition rate. IEC/TS 60034-18-41 Type I insulation systems are dealt with in IEC/TS 60034-18-41. They are generally used in rotating machines rated at less than 700 V r.m.s. and tend to have random wound stators.

34、In this Technical Specification, the necessary normative references and definitions are given together with a review of the effects arising from converter operation. Having established the technical foundation for the evaluation procedure, the conceptual approach is then described. IEC/TS 60034-18-4

35、2 In this Technical Specification, the tests for qualification and acceptance of electrical insulation systems chosen for Type II rotating electrical machines are described. These insulation systems are generally used in rotating machines and tend to have form-wound coils, mostly rated above 700 V r

36、.m.s. The qualification procedure is completely different from that used for Type I insulation systems and involves destructive ageing of insulated test objects under accelerated conditions. The manufacturer requires a life curve for the insulation system that can be interpreted to provide an estima

37、te of life under the service conditions with converter drive. Great importance is attached to the qualification of any stress grading system that is used and testing here should be performed under repetitive impulse conditions. If the insulation system can be shown to provide an acceptable life unde

38、r the appropriate ageing conditions, it is qualified for use. Acceptance testing is performed on coils made using this insulation system when subjected to a voltage endurance test. This Technical Specification should be read in conjunction with IEC/TS 60034-18-41, which provides a background to the

39、technology of converter drive/machine systems. The winding insulation systems intended for converter-fed machines and converter technologies are evolving rapidly. In addition, there is on-going research into the best ways to test such insulation systems. It is expected therefore that there will be i

40、mprovements in these Technical Specifications over the next few years. DD CLC/TS 60034-18-42:2011TS 60034-18-42 IEC:2008 7 ROTATING ELECTRICAL MACHINES Part 18-42: Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical m

41、achines fed from voltage converters 1 Scope This Technical Specification defines criteria for assessing the insulation system of stator/rotor windings of single or polyphase AC machines which are subjected to repetitive impulse voltages, such as pulse width modulation (PWM) converters, and expected

42、to withstand partial discharge activity during service. It specifies electrical qualification and acceptance tests on representative samples which verify fitness for operation with voltage-source converters. This document does not apply to: Rotating machines which are fed by converters only for star

43、ting. Electrical equipment and systems for traction. NOTE Although this Technical Specification deals with voltage-source converters, it is recognised that there are other types of converters that can create repetitive impulse voltages. For these converters, a similar approach to testing can be used

44、 if needed. 2 Normative references The following referenced 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 60034-18-1

45、, Rotating electrical machines Functional evaluation of insulation systems Part 18-1: General guidelines IEC 60034-18-32, Rotating electrical machines Functional evaluation of insulation systems Part 18-32: Test Procedures for form-wound windings Electrical evaluation of insulation systems used in m

46、achines up to and including 50 MVA and 15 kV IEC/TS 60034-18-41, Rotating electrical machines Part 18-41: Qualification and type tests for Type I electrical insulation systems used in rotating electrical machines when fed from voltage converters IEC 60216-3, Electrical insulating materials Thermal e

47、ndurance properties Part 3: Instructions for calculating thermal endurance characteristicsIEC/TS 61251, Electrical insulating materials A.C. voltage endurance evaluation Introduction IEC 61800-4, Adjustable speed electrical power drive systems Part 4: General requirements Rating specifications for a

48、.c. power drive systems above 1 000 V a.c. and not exceeding 35 kV IEC 62068-1, Electrical insulating systems Electrical stresses produced by repetitive impulses Part 1: General method of evaluation of electrical endurance DD CLC/TS 60034-18-42:2011 8 TS 60034-18-42 IEC:2008 IEC 62539, Guide for the

49、 statistical analysis of electrical insulation breakdown data 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 voltage endurance coefficient symbol: n exponent of the inverse power model or exponential model on which the relationship between life and stressing voltage amplitude for a specific insulation system depends 3.2 life time to failure 3.3 stress grading material material generally having