IEC-TS-62271-304-2008.pdf

IEC/TS 62271-304 Edition 1.0 2008-05 TECHNICAL SPECIFICATION SPÉCIFICATION 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 Appareillage à haute tension Partie 304: Classes de construction pour l'appareillage dintérieur sous enveloppe pour tensions assignées à partir de 1 kV jusquà 52 kV inclus pour usage sous conditions climatiques sévères IEC/TS 62271-304:2008 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:18:10 MDTNo reproduction or networking permitted without license from IHS -,-,- THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright © 2008 IEC, Geneva, Switzerland All rights reserved. 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Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tél.: +41 22 919 02 11 Fax: +41 22 919 03 00 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:18:10 MDTNo reproduction or networking permitted without license from IHS -,-,- IEC/TS 62271-304 Edition 1.0 2008-05 TECHNICAL SPECIFICATION SPÉCIFICATION 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 Appareillage à haute tension Partie 304: Classes de construction pour l'appareillage dintérieur sous enveloppe pour tensions assignées à partir de 1 kV jusquà 52 kV inclus pour usage sous conditions climatiques sévères INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE P ICS 29.130.10 PRICE CODE CODE PRIX ISBN 2-8318-9828-5 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:18:10 MDTNo reproduction or networking permitted without license from IHS -,-,- 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 procedure .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 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 (informative) 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 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:18:10 MDTNo reproduction or networking permitted without license from IHS -,-,- TS 62271-304 © 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 Electrotechnical 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. To 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 National Committee interested in the subject dealt 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 determined 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 Committees. 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 they 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 and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 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 committees 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 Publications. 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 patent 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 required support cannot be obtained for the publication of an International 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 to 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. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:18:10 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 TS 62271-304 © IEC:2008 The 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 IEC/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 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 maintenance 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. Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:18:10 MDTNo reproduction or networking permitted without license from IHS -,-,- TS 62271-304 © IEC:2008 5 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 1 Scope and object This part of IEC 62271 applies to indoor enclosed switchgear and controlgear 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 indoor 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 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 co