BS-EN-60298-1996 IEC-60298-1990.pdf

BRITISH STANDARD BS EN 60298:1996 IEC 60298:1990 Incorporating Corrigendum No. 1 and Amendment No. 1 A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV The European Standard EN 60298:1996 with the incorporation of amendment A11:1999 has the status of a British Standard ICS 29.120.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60298:1996 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 July 1996 © BSI 07-2001 The following BSI references relate to the work on this standard: Committee reference PEL/17/1 Draft for comment 91/27710 DC ISBN 0 580 25914 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee PEL/17, Switchgear, controlgear and HV-LV coordination, to Subcommittee PEL/17/1, High-voltage switchgear and controlgear, upon which the following bodies were represented: Association of Consulting Engineers ASTA Certification Services British Cable Makers Confederation British Railways Board Electrical Installation Equipment Manufacturers Association (BEAMA Ltd.) Electricity Association Engineering Equipment and Materials Users Association GAMBICA (BEAMA Ltd.) Health and Safety Executive Institution of Incorporated Executive Engineers Transmission and Distribution Association (BEAMA Limited) Amendments issued since publication Amd. No.DateComments 10215 Corrigendum No. 1 November 1998 References to table in clause 3.102 13079July 2001See national foreword Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60298:1996 © BSI 07-2001 i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 602985 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60298:1996 ii© BSI 07-2001 National foreword This British Standard has been prepared by Subcommittee PEL/17/1 and is the English language version of EN 60298:1996 A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV including amendment A11:1999, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 60298:1990 and its amendment 1:1994 including the corrigenda dated April 1995 and May 1998, published by the International Electrotechnical Commission (IEC). The CENELEC common modifications have been implemented at the appropriate places in the text. The start and finish of each common modification is indicated in the text by tags ?. Where a common modification has been introduced by amendment, the tags carry the number of the amendment. For example, the common modifications introduced by CENELEC amendment A11 are indicated by ?. The foreword of the EN makes reference to the “date of withdrawal”, dow, of the relevant national standard. In this case the relevant national standard is BS 5227:1992 which will be withdrawn on 1996-12-01. Certificates and marks will not be awarded after this date with respect to the withdrawn British Standard. However such certificates and marks, already awarded, may continue to apply to production until 2001-12-01. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index” or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to ii, the EN title page, pages 2 to 48, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 60298 January 1996 +A11 October 1999 ICS 29.120.60Supersedes HD 187 S5:1992 Descriptors: High-voltage switchgear and controlgear (1 kV rated voltage?52 kV), switches, disconnectors, switch-disconnectors, fuse-combination units English version A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV (includes amendment A11:1999) (IEC 60298:1990 + corrigenda 1995 and 1998 + A1:1994, modified) Appareillage sous enveloppe métallique pour courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV (inclut lamendement A11:1999) (CEI 60298:1990 + corrigenda 1995 et 1998 + A1:1994, modifiée) Metallgekapselte Wechselstrom-Schaltanlagen für Nennspannungen über 1 kV bis einschließlich 52 kV (enthält Änderung A11:1999) (IEC 60298:1990 + corrigenda 1995 und 1998 + A1:1994, modifiziert) This European Standard was approved by CENELEC on 1995-11-28. Amendment A11 was approved by CENELEC on 1999-09-27. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels © 1996 Copyright reserved to CENELEC members Ref. No. EN 60298:1996 + A11:1999 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60298:1996 © BSI 07-20012 Foreword The text of the International Standard IEC 298:1990 with its corrigendum April 1995 and its amendment 1:1994, prepared by SC 17C, High-voltage enclosed switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 60298 on 1995-11-28 without any modification. The following dates were fixed: For products which have complied with HD 187 S5:1992 before 1996-12-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 2001-12-01. Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex AA, Annex BB, Annex DD, Annex EE, Annex FF, Annex ZA and Annex ZB are normative and Annex ZC is informative. Annex ZA, Annex ZB and Annex ZC have been added by CENELEC. ?Foreword to amendment A11 At the request of the Italian electrotechnical committee, a draft for an amendment to EN 60298:1996 was submitted to the CENELEC members for acceptance in July 1999. The text of the draft was accepted by CENELEC as amendment A11 to EN 60298:1996 on 1999-09-27. The following dates were fixed: Contents Page Section 1. General 1Scope5 Section 2. Service conditions 2Normal and special service conditions7 Section 3. Terms and definitions 3Definitions9 Section 4. Rated characteristics 4Rating13 4.1Rated voltage13 4.2Rated insulation level13 4.3Rated frequency13 4.4Rated normal current and temperature rise13 4.5Rated short-time withstand current14 4.6Rated peak withstand current14 4.7Rated duration of short circuit14 4.8Rated supply voltage of closing and opening devices and auxiliary circuits14 4.9Rated supply frequency of operating devices and auxiliary circuits14 4.10 Rated pressure of compressed gas supply for operation14 4.101 Rated filling pressure (of gas-filled compartments)14 Section 5. Rules for design and construction 5Design and construction15 5.1Requirements for liquids in switchgear and controlgear15 5.2Requirements for gases in switchgear and controlgear15 5.3Earthing15 5.4Auxiliary equipment16 5.5Dependent power closing16 5.6Stored energy closing16 5.7Operating of releases16 5.8Low and high pressure interlocking devices16 5.9Nameplates16 5.101 Degree of protection and internal fault16 5.102 Enclosure17 5.103 Partitions and shutters19 5.104 Pressure relief of gas-filled compartments 20 5.105 Disconnectors and earthing switches20 5.106 Interlocks21 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1996-12-01 latest date by which the existence of the amendment has to be announced at national level(doa) 1999-12-27 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 2000-03-27? Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60298:1996 © BSI 07-2001 3 Page 5.107 Provisions for dielectric tests on cables21 Section 6. Rules for type tests 6Type tests23 6.1Dielectric tests23 6.2Radio interference voltage (RIV) tests26 6.3Temperature-rise tests26 6.4Measurement of the resistance of the main circuit26 6.5Short-time and peak withstand current tests26 6.101 Verification of making and breaking capacities27 6.102 Mechanical operation tests27 6.103 Verification of the IP-coding27 6.104 Pressure withstand test for gas-filled compartments27 6.105 Gas tightness tests of gas-filled compartments28 6.106 Measurement of leakage currents28 6.107 Weatherproofing test28 6.108 Arcing due to internal fault28 6.109 Mechanical impact tests28 Section 7. Rules for routine tests 7Routine tests29 7.1Power-frequency voltage tests on the main circuit29 7.2Dielectric tests on auxiliary and control circuits29 7.3Measurement of the resistance of the main circuit29 7.101 Partial discharge measurement29 7.102 Mechanical operation tests30 7.103 Pressure tests of gas-filled compartments30 7.104 Gas tightness tests of gas-filled compartments30 7.105 Tests of auxiliary electrical, pneumatic and hydraulic devices30 7.106 Verification of correct wiring30 7.107 Tests after erection on site30 7.108 Measurement of gas condition after filling on site30 Section 8. General information 8Guide to the selection of switching devices for service31 9Information to be given with enquiries, tenders and orders31 Page 9.101 Information with enquiries and orders31 9.102 Information with tenders32 10Rules for transport, storage, erection and maintenance32 10.1 Conditions during transport, storage and erection32 10.2 Erection (mounting)32 10.3 Maintenance32 Annex AA (normative) Internal fault34 Annex BB (normative) Method of calculating the cross-sectional area of bare conductors with regard to thermal stresses due to currents of short duration40 Annex CC Deleted40 Annex DD (normative) Guide for voltage tests after erection on site41 Annex EE (normative) Rated insulation level for Series II41 Annex FF (normative) Partial discharge measurement41 Annex GG Deleted45 Annex ZA (normative) Normative references to international publications with their corresponding European publications46 Annex ZB (normative) Special national conditions47 Annex ZC (informative) A-deviations48 Figure 1 Standard test finger33 Figure AA.1 Mounting frame for indicators39 Figure AA.2 Position of indicators (i) Height of equipment (h)40 Figure FF.1 Partial discharge test circuit (three-phase arrangement)45 Table AA.1 Locations, causes and examples of measures decreasing the probability of internal faults or reducing the risk34 Table AA.2 Examples of measures limiting the consequences of internal faults34 Table FF.1 Test circuits and procedures44 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60298:1996 © BSI 07-2001 5 Section 1. General1 1 Scope This standard specifies requirements for factory-assembled metal-enclosed switchgear and controlgear for alternating current of rated voltages above 1 kV and up to and including 52 kV for indoor and outdoor installation, and for service frequencies up to and including 60 Hz. For metal-enclosed switchgear and controlgear containing gas-filled compartments, the design pressure is limited to a maximum of 3 bar (gauge). Gas-filled compartments having a design pressure exceeding 3 bar (gauge) shall be designed and tested in accordance with IEC 517. Metal-enclosed switchgear and controlgear for special use, for example in flammable atmospheres, in mines or on board ships, may be subject to additional requirements. Components contained in metal-enclosed switchgear and controlgear are to be designed and tested in accordance with their various relevant standards. This standard supplements the standards for the individual components regarding their installation in switchgear and controlgear. NOTE 1Switchgear and controlgear assemblies having an insulation enclosure are covered by IEC 466. NOTE 2Metal-enclosed switchgear and controlgear for rated voltages above 52 kV insulated by air at atmospheric pressure may be covered by this standard taking into account the insulation levels of IEC 694. NOTE 3Liquid-insulated hermetically sealed compartments are equal to gas-filled compartments with respect to independence from ambient atmosphere. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:32:50 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60298:1996 © BSI 07-2001 7 Section 2. Service conditions2 2 Normal and special service conditions Unless otherwise specified in this standard, the metal-enclosed switchgear and controlgear is designed to be used under normal service co