1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationElectrical insulation systems (EIS) Thermal evaluation of combined liquid and solid componentsPart 1: General requirementsDD IEC/TS 62332-1:2011National forewordThis Draft for De
2、velopment is the UK implementation of IEC/TS 62332-1:2011. It supersedes DD IEC/TS 62332-1:2005 which is with-drawn.The UK participation in its preparation was entrusted to Technical Committee GEL/112, Evaluation and qualification of electrical insulating materials and systems.A list of organization
3、s 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 70625 7 ICS 29.080.30Compliance with a British Standard canno
4、t confer immunity from legal obligations.This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 30 June 2011.Amendments issued since publicationAmd. No. Date Text affectedDRAFT FOR DEVELOPMENTDD IEC/TS 62332-1:2011IEC/TS 62332-1 Edition 2.0 201
5、1-03 TECHNICAL SPECIFICATION Electrical insulation systems (EIS) Thermal evaluation of combined liquid and solid components Part 1: General requirements INTERNATIONAL ELECTROTECHNICAL COMMISSION R ICS 29.080.30 PRICE CODE ISBN 978-2-88912-404-6 Registered trademark of the International Electrotechni
6、cal Commission DD IEC/TS 62332-1:2011 2 TS 62332-1 IEC:2011(E) CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions . 8 4 Thermal ageing test apparatus . 10 4.1 General description . 10 4.2 Construction of the test apparatus . 10 4.2.1 Ageing cells .
7、10 4.2.2 Immersion heaters . 11 4.2.3 Power supply . 11 4.2.4 Control circuit system 11 4.2.5 Gas blanketing system 11 4.2.6 Safety system 12 4.3 Monitoring and data collection . 12 5 Construction of the test object 12 5.1 General . 12 5.2 Determination of component volumes 12 5.3 Test object 12 5.3
8、.1 General . 12 5.3.2 Conductor assembly 13 5.3.3 Liquid component 13 5.3.4 Other components . 14 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 . 15 6.3.1 Gener
9、al . 15 6.3.2 Solid insulation 15 6.3.3 Liquid insulation 16 6.4 Thermal ageing . 16 6.4.1 Recommended solid-component ageing temperatures . 16 6.4.2 Recommended liquid ageing temperatures 16 6.4.3 Reference EIS ageing temperatures 16 6.4.4 Ageing procedures of the candidate EIS 17 6.5 End-point tes
10、ting . 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 liquid component 17 7.1.3 End-of-life of the solid component . 18 7.1.4 Extrapolation of data . 18 7.2 Report . 18 DD IEC/TS 62332-1:2011TS 62332-1 IEC:2011(E) 3 Annex A (informative) Component vo
11、lume ratio spreadsheet example . 19 Bibliography 20 Figure 1 Ageing cell cross-section . 11 Figure 2 Example of an insulation package for a transformer winding 13 Table 1 Recommended ageing temperatures and periods for expected thermal class 16 Table A.1 Examples of component volume ratio calculatio
12、ns 19 DD IEC/TS 62332-1:2011 4 TS 62332-1 IEC:2011(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL INSULATION SYSTEMS (EIS) THERMAL EVALUATION OF COMBINED LIQUID AND SOLID COMPONENTS Part 1: General requirements FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide
13、 organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activi
14、ties, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject d
15、ealt 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 with the International Organization for Standardization (ISO) in accordance with conditions determin
16、ed 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 subjects since each technical committee has representation from all interested IEC National Committee
17、s. 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 technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which the
18、y are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication a
19、nd 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 provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not resp
20、onsible 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 its directors, employees, servants or agents including individual experts and members of its technical co
21、mmittees 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 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publica
22、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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of pa
23、tent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical specification when the require
24、d support cannot be obtained for the publication of an International Standard, despite repeated efforts, or the subject is stil under technical development or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifi
25、cations are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC/TS 62332-1, which is a technical specification, has been prepared by IEC technical committee 112: Evaluation and qualification of electrical insulating material
26、s and systems. DD IEC/TS 62332-1:2011TS 62332-1 IEC:2011(E) 5 This second edition cancels and replaces the first edition, published in 2005, and constitutes editorial and technical revisions. The following significant technical changes with respect to the previous edition have been made: Modificatio
27、ns have been made to the technical specification based on an extensive test series conducted using this methodology based on the first edition. This included updating expected times and temperatures to use in order to get useful results, as well as making the range of equipment covered more broad. T
28、he method can now cover electrotechnical devices using different sealing systems, as well as devices using enamel covered wires The text of this technical specification is based on the following documents: Enquiry draft Report on voting 112/160/DTS 112/168/RVC Full information on the voting for the
29、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. The committee has decided that the contents of this publication will remain unchanged until the stability d
30、ate indicated on the IEC 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. A bilingual version of this publicatio
31、n may be issued at a later date. DD IEC/TS 62332-1:2011 6 TS 62332-1 IEC:2011(E) INTRODUCTION This technical specification describes a method for the thermal evaluation of electrical insulation systems (EIS) for electrotechnical products with combined liquid and solid components. Part 1 covers gener
32、al test requirements. Subsequent parts should cover specific product test requirements. Prior to this technical specification, the procedure for determining the thermal endurance of insulation systems for liquid-immersed products involved one of two processes: firstly, sealed-tube ageing and, second
33、ly, ageing of full-scale models. The ageing of full-scale models is impractical, especially for larger products, such as power transformers. Similarly, the use of sealed-tube ageing is not practical when testing components having drastically different thermal capabilities. For example, testing of a
34、system with a solid material with an RTI of 200 C with a liquid having a 130 C thermal capability cannot be performed efficiently. Accelerated ageing temperatures, which fairly age the liquid, will result in extremely long ageing times for the solid. Accelerated ageing temperatures, which fairly age
35、 the solid, will result in extreme, or even hazardous, ageing of the liquid. This technical specification describes an accelerated thermal ageing procedure and model that allows for the solid materials to be aged at temperatures separate from the liquid ageing temperatures, all in the same apparatus
36、. The model acts more in the true-life ageing mode of insulation systems, where solid insulation near the active parts is exposed to much higher temperatures than the major volume of liquid in the equipment. The model contains all the primary EIS elements, and in relative component ratios which comp
37、are with actual electrotechnical products. The model has a dual temperature capability that allows independent control of the temperatures of the solid and liquid components by the use of separate circuits. A detailed bibliography is provided. This technical specification has been prepared in conjun
38、ction with TC 14, Power transformers. Any comments or suggestions from other technical committees to make this technical specification more general are welcome. DD IEC/TS 62332-1:2011TS 62332-1 IEC:2011(E) 7 ELECTRICAL INSULATION SYSTEMS (EIS) THERMAL EVALUATION OF COMBINED LIQUID AND SOLID COMPONEN
39、TS Part 1: General requirements 1 Scope This part of IEC/TS 62332 is applicable to EIS containing solid and liquid components where the thermal stress is the dominant ageing factor, without restriction to voltage class. This part specifies a dual-temperature test procedure for the thermal evaluation
40、 and qualification of electrical insulation systems (EIS). 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 (in
41、cluding any amendments) applies. IEC 60085:2007, Electrical insulation Thermal evaluation and designation IEC 60156, Insulating liquids Determination of the breakdown voltage at power frequency Test method IEC 60216-2:2005, Electrical insulating materials Thermal endurance properties Part 2: Determi
42、nation of thermal endurance properties of electrical insulating materials Choice of test criteria IEC 60216-3, Electrical insulating materials Thermal endurance properties Part 3: Instructions for calculating thermal endurance characteristics IEC 60216-5, Electrical insulating materials Thermal endu
43、rance properties Part 5: Determination of relative thermal endurance index (RTE) of an insulating material IEC 60243-1, Electrical strength of insulating materials Test methods Part 1: Tests at power frequencies IEC 60247, Insulating liquids Measurement of relative permittivity, dielectric dissipati
44、on factor (tan ) and d.c. resistivity IEC 60250, Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including metre wavelengths IEC 60296, Fluids for electrotechnical applications Un
45、used mineral insulating oils for transformers and switchgear IEC 60422, Mineral insulating oils in electrical equipment Supervision and maintenance guidance IEC 60450, Measurement of the average viscometric degree of polymerization of new and aged cellulosic electrically insulating materials DD IEC/
46、TS 62332-1:2011 8 TS 62332-1 IEC:2011(E) IEC 60505:2004, Evaluation and qualification of electrical insulation systems1IEC 60554-2, Cellulosic papers for electrical purposes Part 2: Methods of test IEC 60567, Oil-filled electrical equipment Sampling of gases and of oil for analysis of free and disso
47、lved gases Guidance IEC 60599, Mineral oil-impregnated electrical equipment in service Guide to the interpretation of dissolved and free gases analysis IEC 60763-2, Specification for laminated pressboard Part 2: Methods of test IEC 60814, Insulating liquids Oil-impregnated paper and pressboard Deter
48、mination of water by automatic coulometric Karl Fischer titration IEC 61198, Mineral insulating oils Methods for the determination of 2-furfural and related compounds IEC 61620, Insulating liquids Determination of dielectric dissipation factor by measurement of the conductance and capacitance Test m
49、ethod IEC 61857-1:2008, Electrical insulation systems Procedures for thermal evaluation Part 1: General requirements Low voltage IEC 62021-1, Insulating liquids Determination of acidity Part 1: Automatic potentiometric titration ISO 287, Paper and board Determination of moisture content of a lot Oven-drying method ISO 1924 (all parts), Paper and board Determination of tensile properties ISO 2049, Petroleum products Det
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