1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationRotating electrical machinesPart 18-21: Functional evaluation of insulation systems Test procedures for wire-wound windings Thermal evaluation and classificationBS EN 60034-18-21
2、:2013National forewordThis British Standard is the UK implementation of EN 60034-18-21:2013. It isidentical to IEC 60034-18-21:2012. It supersedes BS EN 60034-18-21:1994which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteePEL/2, Rotating electrical machinery
3、.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2013 Published by BSI Standar
4、ds Limited 2013 ISBN 978 0 580 61688 4 ICS 29.160Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2013.Amendments issued since publicationAmd. No. Date T
5、ext affectedBRITISH STANDARDBS EN 60034-18-21:2013EUROPEAN STANDARD EN 60034-18-21 NORME EUROPENNE EUROPISCHE NORM March 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Ce
6、ntre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60034-18-21:2013 E ICS 29.160 Supersedes EN 60034-18-21:1994 + A1:1996 + A2:1996 English version Rotating electrical machines - Part 18
7、-21: Functional evaluation of insulation systems - Test procedures for wire-wound windings - Thermal evaluation and classification (IEC 60034-18-21:2012) Machines lectriques tournantes - Partie 18-21: Evaluation fonctionnelle des systmes disolation - Procdures dessai pour enroulements fils - Evaluat
8、ion thermique et classification (CEI 60034-18-21:2012) Drehende elektrische Maschinen - Teil 18-21: Funktionelle Bewertung von Isoliersystemen - Prfverfahren fr Runddrahtwicklungen - Thermische Bewertung und Klassifizierung (IEC 60034-18-21:2012) This European Standard was approved by CENELEC on 201
9、2-10-24. 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
10、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 notifi
11、ed 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, Gr
12、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 60034-18-21:2013EN 60034-18-21:2013 - 2 - Foreword The text of document 2/1672/FDIS,
13、future edition 2 of IEC 60034-18-21, prepared by IEC/TC 2 “Rotating machinery“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60034-18-21:2013. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an
14、identical national standard or by endorsement (dop) 2013-09-29 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-10-24 This document supersedes EN 60034-18-21:1994 + A1:1996 + A2:1996. EN 60034-18-21:2013 includes the following significant tech
15、nical changes with respect to EN 60034-18-21:1994 + A1:1996 + A2:1996: The main technical changes with regard to the previous edition can be seen in the introduction of some basic statistical methods in the evaluation of comparative data. Moreover, the standard states a simpler use of different test
16、 procedures. 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 60034-18-21
17、:2012 was approved by CENELEC as a European Standard without any modification. BS EN 60034-18-21:2013- 3 - EN 60034-18-21:2013 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are norm
18、atively 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 When an international publication has been modified by c
19、ommon modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60034-1 - Rotating electrical machines - Part 1: Rating and performance EN 60034-1 - IEC 60034-18-1 2010 Rotating electrical machines - Part 18-1: Functional evaluation of insulation systems -
20、General guidelines EN 60034-18-1 2010 IEC 60085 - Electrical insulation - Thermal evaluation and designation EN 60085 - IEC 60216-1 - Electrical insulating materials - Properties of thermal endurance - Part 1: Ageing procedures and evaluation of test results EN 60216-1 - IEC 60216-5 - Electrical ins
21、ulating materials - Thermal endurance properties - Part 5: Determination of relative thermal endurance index (RTE) of an insulating material EN 60216-5 - IEC 60455 Series Resin based reactive compounds used for electrical insulation EN 60455 Series IEC 60464 Series Varnishes used for electrical insu
22、lation EN 60464 Series IEC 60505 - Evaluation and qualification of electrical insulation systems EN 60505 - BS EN 60034-18-21:2013 2 60034-18-21 IEC:2012 CONTENTS INTRODUCTION . 8 1 Scope . 9 2 Normative references . 9 3 General considerations . 9 3.1 Reference insulation system 9 3.2 Test procedure
23、s 10 4 Test objects and test specimens . 10 4.1 Construction of test objects . 10 4.2 Verification of effects of minor changes in insulation systems 11 4.3 Number of test specimens . 11 4.4 Quality control . 11 4.5 Initial diagnostic tests 11 5 Test procedures . 12 5.1 General principles of diagnost
24、ic tests 12 5.2 Ageing temperatures and sub-cycle lengths 12 5.3 Methods of heating 13 5.4 Thermal ageing sub-cycle 14 6 Diagnostic sub-cycle. 14 6.1 Conditioning sequence 14 6.2 Mechanical conditioning 14 6.3 Moisture conditioning 15 6.4 Voltage tests . 15 6.5 Other diagnostic tests 15 7 Reporting
25、and functional evaluation of data from candidate and reference systems 16 7.1 General . 16 7.2 Determining qualification . 16 7.2.1 Overview . 16 7.2.2 Case A: Qualification for the same class temperature and same expected service life 17 7.2.3 Case B: Qualification for the same class temperature an
26、d a different expected service life 17 7.2.4 Case C: Qualification for a different class temperature and same expected service life 18 7.2.5 Case D: Qualification for a different class temperature and different expected service life 19 7.2.6 Non-linearity of regression lines 20 7.2.7 Reduced evaluat
27、ion . 20 8 Procedure 1: Motorette test procedure 21 8.1 General . 21 8.1.1 Test object definition . 21 8.1.2 Test procedure 21 8.2 Test objects . 21 8.2.1 Construction of test objects . 21 8.2.2 Number of test objects . 21 8.2.3 Quality assurance tests . 21 BS EN 60034-18-21:201360034-18-21 IEC:2012
28、 3 8.2.4 Initial diagnostic tests 22 8.3 Thermal ageing sub-cycle 22 8.3.1 Ageing temperatures and sub-cycle lengths . 22 8.3.2 Means of heating . 22 8.3.3 Ageing procedure 22 8.4 Diagnostic sub-cycle . 22 8.4.1 General . 22 8.4.2 Mechanical conditioning 22 8.4.3 Moisture conditioning . 22 8.4.4 Vol
29、tage test . 22 8.4.5 Other diagnostic tests 23 8.5 Analyzing, reporting and classification . 23 9 Procedure 2: Motor test procedure . 23 9.1 General . 23 9.1.1 Test object definition . 23 9.1.2 Test procedure 23 9.2 Test objects . 24 9.2.1 Construction of test objects . 24 9.2.2 Number of test objec
30、ts . 24 9.2.3 Quality assurance tests . 24 9.2.4 Initial diagnostic tests 24 9.3 Thermal ageing sub-cycle 24 9.3.1 Ageing temperatures and sub-cycle lengths . 24 9.3.2 Means of heating . 24 9.3.3 Ageing procedure 25 9.3.4 Mechanical stresses during the thermal ageing sub-cycle 25 9.4 Diagnostic sub-
31、cycle . 25 9.4.1 Mechanical conditioning 25 9.4.2 Moisture conditioning . 26 9.4.3 Voltage withstand test . 26 9.4.4 Other diagnostic tests 26 9.5 Analyzing, reporting and classification . 27 10 Procedure 3: Test procedure for stator windings in slots . 27 10.1 General . 27 10.1.1 Test object defini
32、tion . 27 10.1.2 Test procedures 27 10.2 Test objects . 27 10.2.1 Construction of test objects . 27 10.2.2 Number of test specimens . 27 10.2.3 Quality assurance tests . 27 10.2.4 Initial diagnostic tests 27 10.3 Thermal ageing sub-cycle 27 10.3.1 Ageing temperatures and sub-cycle lengths . 27 10.3.
33、2 Means of heating . 28 10.3.3 Ageing procedure 28 10.4 Diagnostic sub-cycle . 28 10.4.1 Mechanical conditioning 28 10.4.2 Moisture conditioning . 28 10.4.3 Voltage withstand test . 28 BS EN 60034-18-21:2013 4 60034-18-21 IEC:2012 10.4.4 Other diagnostic tests 28 10.5 Analyzing, reporting and classi
34、fication . 28 11 Procedure 4: Test procedure for pole windings . 29 11.1 General . 29 11.1.1 Test object definition . 29 11.1.2 Test procedures 29 11.2 Test objects . 29 11.2.1 Construction of test objects . 29 11.2.2 Number of test objects . 29 11.2.3 Quality assurance tests . 29 11.2.4 Initial dia
35、gnostic tests 29 11.3 Thermal ageing sub-cycle 29 11.3.1 Ageing temperatures and sub-cycle lengths . 29 11.3.2 Means of heating . 29 11.3.3 Ageing procedure 30 11.4 Diagnostic sub-cycle . 30 11.4.1 Mechanical conditioning 30 11.4.2 Moisture conditioning . 30 11.4.3 Voltage withstand test . 30 11.4.4
36、 Other diagnostic tests 31 11.5 Analyzing, reporting and classification . 31 12 Procedure 5: Test procedure for rotor windings in slots 31 12.1 General . 31 12.1.1 Test object definition . 31 12.1.2 Test procedures 31 12.2 Test objects . 31 12.2.1 Construction of test objects . 31 12.2.2 Number of t
37、est specimens . 32 12.2.3 Quality assurance tests . 32 12.2.4 Initial diagnostic tests 32 12.3 Thermal ageing sub-cycle 32 12.3.1 Ageing temperatures and sub-cycle lengths . 32 12.3.2 Ageing means 32 12.3.3 Ageing procedure 32 12.4 Diagnostic sub-cycle . 32 12.4.1 Mechanical conditioning 32 12.4.2 M
38、oisture conditioning . 32 12.4.3 Voltage test . 33 12.4.4 Other diagnostic tests 33 12.5 Analyzing, reporting and classification . 33 Annex A (informative) Motorette construction (examples) . 34 Annex B (informative) Models for windings on poles (examples) 39 Annex C (informative) Equipment for mois
39、ture tests . 46 Figure 1 Candidate system qualified for the same thermal class and the same expected service life . 17 Figure 2 Candidate system qualified for the same thermal class and different expected service life . 18 BS EN 60034-18-21:201360034-18-21 IEC:2012 5 Figure 3 Candidate system qualif
40、ied for a different class temperature and the same expected service life . 19 Figure 4 Candidate system qualified for a different service life and different thermal class from the reference . 20 Figure A.1 Components of motorette before final assembly 37 Figure A.2 Completely assembled and varnished
41、 motorette . 37 Figure A.3 Manufacturing drawing of motorette frame 38 Figure B.1 Test fixture for random wire-wound field coil . 40 Figure B.2 Random wire-wound field coil mounted on the test fixture 40 Figure B.3 Manufacturing drawing for simulating pole for random wire-wound field coil test fixtu
42、re 41 Figure B.4 Manufacturing drawing for simulated frame for random wire-wound field coil test fixture 42 Figure B.5 Test fixture for precision wire-wound field coil . 43 Figure B.6 Precision wire-wound field coil mounted on the test fixture . 43 Figure B.7 Manufacturing drawing for simulated pole
43、 for precision wire-wound field coil test fixture 44 Figure B.8 Manufacturing drawing for simulated frame for precision wire-wound 45 Figure C.1 Diagram illustrating basic principle of condensation chamber with cooled test objects . 47 Figure C.2 Cut away of condensation chamber with cooled test obj
44、ects . 48 Table 1 Thermal classes 12 Table 2 Recommended temperatures and ageing sub-cycle exposure periods . 13 Table 3 Conditions for qualification of candidate system 16 Table 4 Test voltages . 23 BS EN 60034-18-21:2013 8 60034-18-21 IEC:2012 INTRODUCTION IEC 60034-18 comprises several parts, dea
45、ling with different types of functional evaluation and special kinds of test procedures for insulation systems of rotating electrial machines. Part IEC 60034-18-1 provides general guidelines for such procedures and qualification principles. The subsequent parts IEC 60034-18-21, IEC 60034-18-22, IEC
46、60034-18-31, IEC 60034-18-33, IEC 60034-18-34, IEC 60034-18-41 and IEC 60034-18-42 give detailed procedures for the various types of windings. This part IEC 60034-18-21 deals with the thermal evaluation and classification of insulation systems for wire-wound (usually random wound) windings. Parts re
47、levant to this document are: IEC 60034-18-1: General guidelines IEC 60034-18-31: Test procedures for form-wound windings IEC 60034-18-41: Qualification and type tests for Type I electrical insulation systems used in rotating electrical machines fed from voltage converters IEC 60034-18-42: Qualificat
48、ion and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters BS EN 60034-18-21:201360034-18-21 IEC:2012 9 ROTATING ELECTRICAL MACHINES Part 18-21: Functional evaluation of insulation systems Test pro
49、cedures for wire-wound windings Thermal evaluation and classification 1 Scope This part of IEC 60034 gives test procedures for the thermal evaluation and classification of insulation systems used or proposed for use in wire-wound alternating current (a.c.) or direct current (d.c.) rotating electrical machines. The test performance of a candidate insulation system is compared to the test performance of a reference insulation system with proven service experie
