1、 IEC TS 62332-2 Edition 1.0 2014-04 TECHNICAL SPECIFICATION SPECIFICATION TECHNIQUE Electrical insulation systems (EIS) Thermal evaluation of combined liquid and solid components Part 2: Simplified test Systmes disolation lectrique (SIE) valuation thermique de composants liquides et solides combines
2、 Partie 2: Essai simplifi IEC TS 62332-2:2014-04(en-fr) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or
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20、tems (EIS) Thermal evaluation of combined liquid and solid components Part 2: Simplified test Systmes disolation lectrique (SIE) valuation thermique de composants liquides et solides combines Partie 2: Essai simplifi INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONAL
21、E T ICS 29.080.30 PRICE CODE CODE PRIX ISBN 978-2-8322-1514-2 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez
22、vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 IEC TS 62332-2:2014 IEC 2014 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 9 4 Thermal ageing test apparatus 10 4.1 General description . 10 4.2 Sealed tub
23、es . 10 4.3 Gas blanketing system 11 4.4 Pressure relief system 11 4.5 Ageing ovens 11 5 Construction of the test object . 12 5.1 General . 12 5.2 Determination of component weights. 12 5.3 Test object 12 5.3.1 Conductor insulation 12 5.3.2 Other solid insulation components . 13 5.3.3 Liquid compone
24、nt 13 5.3.4 Structural components . 13 5.3.5 Other components . 13 6 Test procedures 14 6.1 General . 14 6.2 Preparation of the test objects 14 6.2.1 General . 14 6.2.2 Reference test object . 14 6.2.3 Candidate test object . 15 6.3 Diagnostic tests 16 6.3.1 General . 16 6.3.2 Solid insulation 16 6.
25、3.3 Liquid insulation 16 6.4 End-point testing . 16 6.5 Simplified one-point test . 17 7 Analysis of data . 17 7.1 End-point criteria 17 7.1.1 General . 17 7.1.2 End-of-life of the solid component 17 7.1.3 Extrapolation of data 17 7.2 Report. 17 Annex A (informative) Consideration of weight ratios .
26、 19 A.1 Examples of transformers leading to actual weight ratios in Table A.1 19 A.2 Calculation of core steel surface ratios . 19 A.3 Calculation of copper components of test 20 A.3.1 Wire enamel samples 20 A.3.2 Bare copper samples . 20 IEC TS 62332-2:2014 IEC 2014 3 Annex B (informative) Consider
27、ation of ageing time and temperature 21 Annex C (informative) Aging example 22 C.1 Reference system test 22 C.2 Candidate system test 22 Bibliography 25 Figure 1 Sealed tube example 11 Figure B.1 Reference EIS system 21 Figure C.1 Example of aging result at a temperature of 165 C 23 Figure C.2 Aging
28、 life curve . 24 Table 1 Reference component weight ratio calculations . 12 Table 2 Reference EIS ageing conditions and candidate EIS ageing temperatures 15 Table 3 Recommended ageing temperatures and periods for expected thermal class 15 Table A.1 Examples obtained from industry sources 19 Table A.
29、2 Examples of component volume ratio calculations 19 Table C.1 Calculation of end-of-life criteria for comparative evaluation 22 Table C.2 Example of aging experiment . 23 4 IEC TS 62332-2:2014 IEC 2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL INSULATION SYSTEMS (EIS) THERMAL EVALUATIO
30、N OF COMBINED LIQUID AND SOLID COMPONENTS Part 2: Simplified test 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 internation
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41、national Standards. In exceptional circumstances, a technical committee may propose the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, or the subject is still under technical developmen
42、t or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC TS 62332-2, wh
43、ich is a technical specification, has been prepared by IEC technical committee 112: Evaluation and qualification of electrical insulating materials and systems. IEC TS 62332-2:2014 IEC 2014 5 The text of this technical specification is based on the following documents: Enquiry draft Report on voting
44、 112/256/DTS 112/268/RVC Full information on the voting for the approval of this technical specification 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 the parts in the IEC 62332 se
45、ries, published under the general title Electrical insulation systems (EIS) Thermal evaluation of combined liquid and solid components, 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
46、 web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be transformed into an International standard, reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this pub
47、lication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 IEC TS 62332-2:2014 IEC 2014 INTRODUCTION This technical specification describes a method for the thermal
48、evaluation of electrical insulation systems (EIS) for electrotechnical products with combined liquid and solid components. More specifically, this part addresses liquid immersed power transformers. Part 1 covers general test requirements. This Part 2 covers a simplified test method which can be used
49、 as a screening test prior to conducting Part 1 testing or it can be used to determine a thermal classification of an EIS. This method can also be used as a quality control test to evaluate minor product changes. This specification provides a standardized test method for sealed tube testing. The sealed tube should contain all the primary EIS elements, and in relative component ratios which comp
