BS PD IEC TR 62271-307-2015 High-voltage switchgear and controlgear Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and coo.pdf

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1、BSI Standards PublicationHigh-voltage switchgear and controlgearPart 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kVPD IEC/TR 62271-307:2015National forewordThis

2、 Published Document is the UK implementation of IEC/TR 62271-307:2015.The UK participation in its preparation was entrusted by TechnicalCommittee PEL/17, Switchgear, controlgear, and HV-LV co-ordination, toSubcommittee PEL/17/1, High-voltage switchgear and controlgear.A list of organizations represe

3、nted on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 79

4、341 7ICS 29.130.10 Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 30 September 2015.Amendments/corrigenda issued since publicationDate Text affectedPUBLISHED DO

5、CUMENTPD IEC/TR 62271-307:2015IEC TR 62271-307 Edition 1.0 2015-09 TECHNICAL REPORT RAPPORT TECHNIQUE High-voltage switchgear and controlgear Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1

6、 kV and up to and including 52 kV Appareillage haute tension Partie 307: Lignes directrices pour lextension de validit des essais de type dappareillages en courant alternatif sous enveloppe mtallique et disolation solide pour tensions assignes suprieures 1 kV et jusqu 52 kV inclus INTERNATIONAL ELEC

7、TROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 29.130.10 ISBN 978-2-8322-2903-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an au

8、thorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colourinsidePD IEC/TR 62271-307:2015 2 IEC TR 62271-307:2015 IEC 2015 CONTENTS FOREWORD . 5 1 General . 7 1.1 Scope . 7 1.2 Normative references 7 2 Terms and definitions 7 3 Use of

9、 extension criteria 9 3.1 General . 9 3.2 Parameters for extension criteria 10 3.3 Use of calculations 10 3.3.1 General . 10 3.3.2 Temperature rise calculations 11 3.3.3 Electric field calculations . 11 3.3.4 Mechanical stress calculations. 11 3.3.5 Short-circuit current calculations 11 3.3.6 Intern

10、al arc pressure rise calculations 12 3.4 Information needed for extension of type test validity 12 4 Application of extension criteria . 12 4.1 Dielectric tests 12 4.2 Temperature rise tests 13 4.3 Mechanical tests . 15 4.4 Short-time and peak withstand current tests 15 4.5 Making and breaking tests

11、 16 4.6 Internal arc fault tests . 17 4.6.1 General . 17 4.6.2 Extension criteria with respect to design 17 4.6.3 Extension criteria with respect to ratings and installation conditions 18 5 Extending the validity of type tests 19 5.1 General . 19 5.2 Extension of validity of a test report to other f

12、unctional units (situation a) . 20 5.3 Validation of a family by selection of test objects (situation b) . 21 5.3.1 General . 21 5.3.2 Mapping of the family 21 5.3.3 Specification of test objects . 22 5.4 Validation of an assembly by existing test reports (situation c) 22 5.5 Validation of a design

13、modification (situation d) 23 Annex A (informative) Rationale for the extension criteria 24 A.1 General . 24 A.2 Dielectric tests 24 A.2.1 General . 24 A.2.2 Clearances (Items 1 and 2) 24 A.2.3 Insulating supports and material (Items 3 and 4) 24 A.2.4 Live parts (Items 5 and 6) 25 A.2.5 Open contact

14、 gap and isolating distance (Items 7 and 8) . 25 A.2.6 Minimum functional pressure for insulation (Item 9) . 25 A.3 Temperature rise tests 25 A.3.1 General . 25 PD IEC/TR 62271-307:2015IEC TR 62271-307:2015 IEC 2015 3 A.3.2 Centre distance between phase conductors (Item 1) 26 A.3.3 Phase to earth di

15、stance (Item 2) 26 A.3.4 Enclosure and compartment volume (Item 3) . 26 A.3.5 Insulating gas (Item 4) . 27 A.3.6 Conductors (Items 5 and 6) . 27 A.3.7 Conductor joints and connections (Items 7, 8 and 9) 27 A.3.8 Ventilation area of partitions and enclosure (Item 10) 27 A.3.9 Power dissipation of com

16、ponents (Item 11) 28 A.3.10 Insulating barriers (Item 12) . 28 A.3.11 Insulating coating of conductors and enclosures (Item 13 and 14) . 28 A.3.12 Insulating material in contact with conductors (Item 15) . 29 A.4 Mechanical tests . 29 A.4.1 General . 29 A.4.2 Shutter systems (Item 1) 29 A.4.3 Contac

17、ts of removable parts (Item 2) . 30 A.4.4 Interlocking systems (Items 3 and 4) 30 A.5 Short-time and peak withstand current tests 30 A.5.1 General . 30 A.5.2 Centre distance between phase conductors (Item 1) 31 A.5.3 Conductors (Items 2, 5 and 6) 31 A.5.4 Insulating conductor supports (Items 3 and 4

18、) 31 A.5.5 Insulating material in contact with conductors (Item 7) . 32 A.5.6 Enclosure, partitions or bushings (Item 8) 32 A.5.7 Contacts of removable part (Item 9) . 32 A.6 Making and breaking tests 32 A.6.1 General . 32 A.6.2 Clearance between phases and to earth (Items 1 and 2) 33 A.6.3 Enclosur

19、e and compartment volume (Item 3) . 33 A.6.4 Insulating gas (Item 4) . 33 A.6.5 Conductors (Items 5 and 6) . 33 A.6.6 Insulating supports (Items 7, 8 and 9) 33 A.7 Internal arc fault tests . 34 A.7.1 General . 34 A.7.2 Clearance between phases and to earth (Items 1 and 2) 34 A.7.3 Compartment volume

20、 (Item 3) 34 A.7.4 Pressure of insulating gas (Item 4) 35 A.7.5 Material in the region of arc initiation (Items 5, 6, 7 and 8) . 35 A.7.6 Pressure relief opening devices (Items 9, 10 and 11) . 35 A.7.7 Enclosure and compartments (Items 12, 13, 14 and 15) . 36 A.8 Rationale for extension criteria wit

21、h respect to arc fault ratings and installation conditions . 36 A.8.1 General . 36 A.8.2 Rated arc fault current and duration (items 1 and 2) 36 A.8.3 Rated voltage (item 3) . 36 A.8.4 Rated frequency (item 4) . 37 A.8.5 Arrangement of assembly (items 5, 6 and 7) 37 A.8.6 Indoor or outdoor installat

22、ion (item 8) 37 A.8.7 Type of accessibility (item 9) . 37 A.8.8 Accessible sides (item 10) . 37 PD IEC/TR 62271-307:2015 4 IEC TR 62271-307:2015 IEC 2015 Annex B (informative) Examples for the extension of validity of type tests 38 B.1 General . 38 B.2 Design modification of a cable terminal in air

23、insulated switchgear (AIS). 38 B.3 Design modification of an AIS bus riser functional unit by adding current transformers . 39 B.4 Design modification of a key-lock in the door of a functional unit of AIS 41 B.5 Extension of a ring-main unit (GIS) to functional units with larger width. 41 B.6 Extens

24、ion of a family of gas insulated switchgear (GIS) by a functional unit 43 Bibliography 46 Figure 1 Extension of validity of one test report; situation a) 20 Figure 2 Validation of a family by selection of appropriate test objects; situation b) 21 Figure 3 Validation of actual assembly with existing

25、test reports; situation c) . 23 Figure B.1 Cable terminals in the connection compartment of air insulated switchgear. 38 Figure B.2 Addition of block-type current transformers into the bus riser functional unit of air insulated switchgear 40 Figure B.3 Special type of key-lock as replacement for a s

26、tandard key-lock in the door of air insulated switchgear 41 Figure B.4 Front view and top cross sectional view of a combination of functional units making up a ring-main unit . 42 Figure B.5 Cross-section of two different functional units of GIS 44 Table 1 Examples of design parameters. 10 Table 2 E

27、xtension criteria for dielectric withstand performance 13 Table 3 Extension criteria for temperature rise performance 14 Table 4 Extension criteria for mechanical performance 15 Table 5 Extension criteria for short-time and peak withstand current performance . 16 Table 6 Extension criteria for makin

28、g and breaking capacity 17 Table 7 Extension criteria for internal arc fault withstand performance . 18 Table 8 Extension criteria for internal arc fault classification with respect to installation conditions . 19 Table B.1 Affirmation of extension criteria with respect to dielectric withstand perfo

29、rmance of a functional unit 39 Table B.2 Affirmation of extension criteria with respect to short-time current withstand performance of a functional unit 40 Table B.3 Affirmation of extension criteria with respect to temperature rise performance of a ring-main-unit 43 Table B.4 Affirmation of extensi

30、on criteria with respect to internal arc classification of a GIS circuit-breaker compartment 44 PD IEC/TR 62271-307:2015IEC TR 62271-307:2015 IEC 2015 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 307: Guidance for the extension of validity of type tests

31、of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC Na

32、tional 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, Pub

33、licly 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-gover

34、nmental 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 o

35、n 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 accepte

36、d 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

37、 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 latte

38、r. 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 responsible for any services carried out by independent certification bodies. 6) All users should

39、 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

40、 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 th

41、e 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.

42、 The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a technical report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of

43、the art“. IEC TR 62271-307, which is a technical report, has been prepared by subcommittee 17C: Assemblies, of IEC technical committee 17: High-voltage switchgear and controlgear. This Technical Report is to be read in conjunction with IEC 62271-200 published in 2011 and IEC 62271-201 published in 2

44、014. PD IEC/TR 62271-307:2015 6 IEC TR 62271-307:2015 IEC 2015 The text of this Technical Report is based on the following documents: Enquiry draft Report on voting 17C/625/DTR 17C/632/RVC Full information on the voting for the approval of this Technical Report can be found in the report on voting i

45、ndicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62271 series, published under the general title High-voltage switchgear and controlgear, can be found on the IEC website. The committee has decided that th

46、e contents of this publication will remain unchanged until the stability 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 reconfirmed, withdrawn, replaced by a revised edition, or amended. IMPORTAN

47、T The colour inside logo on the cover page of this publication 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. PD IEC/TR 62271-307:2015IEC TR 62271-307:2015 IEC 2015

48、 7 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV 1 General 1.1 Scope This Part of IEC 62271, which is a Technical

49、Report, refers to prefabricated metal-enclosed and solid-insulation enclosed (both hereinafter called enclosed) switchgear and controlgear assemblies for alternating current of rated voltages above 1 kV and up to and including 52 kV as specified in IEC 62271-200 and IEC 62271-201, and to other equipment included in the same enclosure with any possible mutual influence. This Technical Report may be used for the extension of the validity of type tests performed