1、 IEC/TS 62271-304 Edition 1.0 2008-05 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE High-voltage switchgear and controlgear Part 304: Design classes for indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV to be used in severe climatic conditions Appare
2、illage haute tension Partie 304: Classes de construction pour lappareillage dintrieur sous enveloppe pour tensions assignes partir de 1 kV jusqu 52 kV inclus pour usage sous conditions climatiques svres IEC/TS 62271-304:2008 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzer
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17、19 03 00 IEC/TS 62271-304 Edition 1.0 2008-05 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE High-voltage switchgear and controlgear Part 304: Design classes for indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV to be used in severe climatic condition
18、s Appareillage haute tension Partie 304: Classes de construction pour lappareillage dintrieur sous enveloppe pour tensions assignes partir de 1 kV jusqu 52 kV inclus pour usage sous conditions climatiques svres INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE P IC
19、S 29.130.10 PRICE CODE CODE PRIX ISBN 2-8318-9828-5 2 TS 62271-304 IEC:2008 CONTENTS FOREWORD.3 1 Scope and object5 2 Normative references .5 3 Degrees of severity of service conditions under condensation and pollution .6 4 Classification of enclosed switchgear and controlgear 7 5 Classification pro
20、cedure .7 6 Test facilities and associated requirements 9 6.1 Climatic test room .9 6.2 Control requirements.9 6.3 Energizing facilities .9 7 Selection and arrangement of the equipment for test9 7.1 Selection of the equipment 9 7.2 Arrangement of the equipment 9 8 Ageing test .10 8.1 Level 1 ageing
21、test10 8.2 Level 2 ageing test11 9 Diagnostic procedure after ageing test .11 9.1 General .11 9.2 Electrical diagnostic procedure12 9.3 Mechanical diagnostic procedure (optional).13 9.4 Evaluation .13 Annex A (normative) Climatic cycle14 Annex B (normative) Climatic test room .15 Annex C (informativ
22、e) Example of typical environment.16 Figure 1 Flow chart for classification procedure .8 Figure 2 Level 1 ageing test.11 Figure 3 Power-frequency withstand voltage test with high humidity after ageing test 12 Figure B.1 Climatic test room.15 Table C.1 Example of typical environment .16 TS 62271-304
23、IEC:2008 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 304: Design classes for indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV to be used in severe climatic conditions FOREWORD 1) The International Electr
24、otechnical Commission (IEC) is a worldwide 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. T
25、o this end and in addition to other activities, 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 Nati
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32、erty 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 Publications. 8) Attention is drawn to the Normative references cited in
33、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 patent rights. IEC shall not be held responsible for identifying any
34、 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 required support cannot be obtained for the publication of an Internation
35、al Standard, despite repeated efforts, or the subject is still 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 specifications are subject to review within three years of publication t
36、o decide whether they can be transformed into International Standards. IEC 62771-304, which is a technical specification, has been prepared by subcommittee 17C: High-voltage switchgear and controlgear assemblies, of IEC technical committee 17: Switchgear and controlgear. 4 TS 62271-304 IEC:2008 The
37、text of this technical specification is based on the following documents: Enquiry draft Report on voting 17C/402/DTS 17C/422A/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 first edition of I
38、EC/TS 62271-304 cancels and replaces the first edition of IEC/TR 60932, published in 1988, and constitutes a technical revision. This revised document has been basically changed to be updated to todays use of high- voltage switchgear and controlgear up to 52 kV. This publication has been drafted in
39、accordance with the ISO/IEC Directives, Part 2. A list of all the parts in the IEC 62271 series, under the general title High-voltage switchgear and controlgear, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenan
40、ce result date 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. TS 62271-304 IEC:2008 5 HIG
41、H-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 304: Design classes for indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV to be used in severe climatic conditions 1 Scope and object This part of IEC 62271 applies to indoor enclosed switchgear and controlgea
42、r complying with IEC 62271-200 and IEC 62271-201, intended to be used in service conditions more severe with respect to condensation and pollution than the normal service conditions specified in IEC 62271-1. This technical specification covers equipment where any of the insulation is exposed to indo
43、or climatic conditions. The test detailed in this technical specification has been designed primarily to investigate the behaviour of electrical insulation and not corrosion on equipments. Nevertheless, the performance of mechanical components, such as mechanisms, interlocks and enclosures may also
44、be recorded. This technical specification proposes definitions for two degrees of severe service conditions with respect to condensation and pollution. It also proposes test procedures for assessing the performance of enclosed switchgear and controlgear under specified conditions so that conclusions
45、 may be drawn concerning their suitability for service under those severe service conditions. In this technical specification, the term “equipment“ is used in accordance with the scope for an “enclosed assembly of switchgear and controlgear“ (see IEC 60050-441, definition 441-12- 02). NOTE The testi
46、ng procedures described in this technical specification may also be applied to internal insulation of outdoor equipment. 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
47、 references, the latest edition of the referenced document (including any amendments) applies. IEC 60060-1: High-voltage test techniques Part 1: General definitions and test requirements IEC 60068 (all parts), Environmental testing IEC 62271-1:2007, High-voltage switchgear and controlgear Part 1: Co
48、mmon specifications 6 TS 62271-304 IEC:2008 IEC 62271-200, High-voltage switchgear and controlgear Part 200: A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV IEC 62271-201, High-voltage switchgear and controlgear Part 201: AC insulation-enclo
49、sed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV 3 Degrees of severity of service conditions under condensation and pollution Indoor equipment installed inside a building or room and thus normally protected against the outdoor climatic conditions may be subjected to condensation due to rapid temperature changes and to pollution due to the environment i
