1、STDmBSI BS EN 50L87-ENGL 1797 H Lb24bb7 D57883Y b28 BRITISH STANDARD Gas-filled compartments for a.c. switchgear and controlgear for rated voltages above 1 kVand up to and including 52 kV The European Standard EN 50187 : 1996 has.the status of a British Standard ICs 29.120.60; 29.260 NO COPYING WITH
2、OUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 50187 : 1997 I STD-BSI BS EN 50187-ENGL 1997 1b24bb9 0598835 5b4 BS EN 50187 : 1997 Amd. No. Date Committees responsible for this British Standard Textaffected The preparation of this British standard was entrusted by Technical Committee
3、PEU17, High-voltage switchgear, controlgear and co-ordination committee, to Subcommittee PEY17/1, High-voltage switchgear and controlgear, upon which the following bodies were represented: ASTA Certification Services Association of Manufacturers Allied to the Electrical and Eleckonic Industry (BEAMA
4、 Ltd.) British Railways Board Copper Development Association ERA Technology Ltd. Electricity Association GAMBICA (BEAMALtd.) Ministry of Defence Safety Assessment Federation Ltd. Ttrinsmission and Distribution Association (BEAMA Limited) The following bodies were ah represented in the drafting of th
5、e standard, through subcornittees and panels: Association of Consulting Engineers British Cable Makern Confederation Electrid Installati on Equipment Manufacturem Association (BEAMA Ltd.) Engineering Equipment and Materials Users Association institution of Incorporated Executive Engineers This Briti
6、sh 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 March 1997 O BSI 1997 The following BSI references relate to the work on this standard Commiaee reference PEU17/1 Draft for
7、 comment 93/206510 DC ISBN O 580 26917 5 * IB * STD-BSI BS EN 50187-ENGL 1777 libEqbb7 057883b 4TO BS EN 60187 : 1997 Contents page Committees responsible Inside front cover National foreword 11 Text of EN 50187 2 O BSI 1997 i STD.BSI BS EN 50187-ENGL 1797 Lb24bb9 0578837 337 H BS EN 60187 : 1997 Na
8、tional foreword This British Standard has been prepared by Subcommittee PEL/17/1 and is the English language version of EN 50187 : 1996 Gas-fiued commmts for a.c. switchgear and conhlgear for mted voltuges above 1 kVand up to and including 52 kV including its corrigendum, September 1996 published by
9、 the European Committee for Electsotechnical StanhMon (CENELEC). Cross-references Publication referred to EN 50052 : 1986 EN 50064 : 1989 EN 50068 : 1991 EN 50069 : 1991 EN 60298 : 1996 EN IS0 9000 series EN 45020 : 1993 Corresponding British Standard BS 6878 : 1988 Spec$ficatZon for high-voltage sw
10、itchgear and controlgear fm indmt 29.2W.00 Deacnptorr: Enclosure, high-voltage switching devices, high-voltage metal-enclosed switchgear and controlgear, pressurized enclosure, gas-filled compartmants for ratd voltages above 1 kV and up to and including 52 kV English version Gas-filled compartments
11、for a.c. switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV Compartiments sous pression de gaz pour appareillage courant alternatif de tensions assignes suprieures 1 kV et infrieures ou gales 52 kV Gasgefllte Schottrurne fr Wechselstrom-Schaltgerte und -Schaltanla
12、gen mit Nennspannungen ber 1 kV bis einschlielich 52 kV This European Standard was approved by CENELEC on 1995-1 1-28. CENELEC members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European Standard the st8tus of a national standard with
13、out any alteration. Up-todate 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 languag
14、e 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,
15、Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Eiectrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue
16、 de Stasssrt 35, B - 1050 Brussels 1996 Copyright reserved to CENELEC members STD.BSI BS EN 50187-ENGL 1777 m 1bZqbb7 0578839 LOT m Page 2 EN 501 87:1996 Foreword This European Standard was prepared by the Technical Committee CENELEC TC 17C, High-voltage enclosed switchgear and controlgear. The text
17、 of the draft was submitted to the formai vote and was approved by CENELEC as EN 501 87 on 1995-1 1-28. The following dates were fixed: - 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- 1 2-0 1 - lates
18、t date by which the national standards conflicting with the EN have to be withdrawn (daw) 1 996- 1 2-0 1 This European Standard is based on the general specifications given in EN 60298: 1996 which are however not sufficient to satisfy the conditions for the service allowance of pressurized high-volt
19、age switchgear and controlgear. These specifications are appropriate for pressurized high-voltage switchgear enclosures allowing an economic production without sacrificing aspects of safety. For unusual shapes dictated by electrical conditions they permit the verification of sound design by proof te
20、sts instead of calculations. For the time being reference can only be made to published European and international standards as far as they are appropriate for the purpose of production of enclosures to be used in gas-filled switchgear and controlgear. The present European Standard has been establis
21、hed as an international specification for the design, construction, testing and certification of pressurized enclosures used in high-voltage switchgear and controlgear. This standard follows to that extent also article 2 of the Directive 76/767/EEC. National deviations from this European Standard ar
22、e listed in annex A (informative. STD-BSI BS EN 5L7-ENGL 1777 Lb24bb7 0578840 721 Page 3 EN 501 87: 1996 Contents introduction 1 Scope 2 Normative references 3 Definitions 4 Materials 5 Design 6 Manufacture and workmanschip 7 Inspection and testing 8 Pressure relief devices 9 Certification and marki
23、ng Page 4 5 6 7 7 8 10 10 11 12 Annex A (informative) A-deviations 14 * * CB Page 4 EN 501 87: 1996 Introduction This standard covers the requirements for the design, construction, testing, inspection and certification of gas-filled compartments for use in AC switchgear and controlgear or for associ
24、ated as-filled equipment. Special consideration is given to these com- partments for the 8 ollowing reasons:- a) b) c) The compartments form the containment of electrical equipment, thus their shape is determined by electrical rather than mechanical considerations. The equipment is operated by compe
25、tent persons (operators) only. As the thorough drying of the inert, non-corrosive gas-filling medium is fundamen- tal to the satisfactory operation of the electrical equipment it is checked at the original pressurisation and periodically if applicable. For this reasons no internal corrosion allowanc
26、e is required on the wall thickness of these compartments. The compartments are subjected to only small fluctuations of pressure as the gas-filling density shall be maintained within close limits to ensure satisfactory insulatin and arcquenching properties. Therefore, the compartments are not The op
27、erating pressure is relatively low. d) liable to 3 atigue due to pressure cycling. e) For the foregoing reasons, and to ensure the minimum disturbance hence reducing the risk of moisture and dust entering the compartments which would prevent correct elec- trical operation of the switchgear, no press
28、ure tests shall be carried out after installa- tion and before placing in service and no periodic inspection of the compartment in- teriors or pressure tests shall be carried out after the equipment is placed in service. STDWBSI BS EN 50187-ENGL 1997 1624bb9 0598842 7Ti M Page 5 EN 501 87:1996 1 sco
29、pe 1.1 Type of equipment This standard a plies to compartments pressurized at a maximum pressure of 3 bar gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor or outdoor installations of AC switchgear and controlgear with rated voltages above 1 kV up to and
30、including 52 kV where the gas is used principally for its dielectric andlor arcquenching properties. (gauge) and wit ! a maximum product pressure x volume of 2000 bar litres with inert The comoartments comorise Parts of electrical eauioment not necessarily limited to the following examples: Circuit
31、breakers Switch disconnectors Disconnectors Earthing switches Current transformers Voltage transformers Busbars and connections Cable terminations Gas filled compartments havin a design pressure ekveeding 3 bar (gauge) or a pro- duct pressure x volume excee 8 ing 2000 bar litres shall be designed, m
32、anufactured and tested in accordance with one or a combination of the following: - II _. e - EN 50052 EN 50064 EN 50068 - - - E * ic rn EN 50069 1.2 Quality assurance The switchgear manufacturer shall be responsible for achieving and maintaining a consistent and adequate quality of product. Sufficie
33、nt examinations shall be made by the compartment manufacturer to ensure that the materials, production and testing comply in all respects with the re uirements of this standard and IS0 3834. Inspection by users inspectors shall not a solve the switch ear manufacturer from this responsibility to exer
34、cise such quality assurance proce ? ures as to ensure that the requirements and intent of this standard are satisfied. NOTE:- Reference should be made to the EN IS0 9000 series of standards for quality systems. STD-BSI BS EN 50187-ENGL 1997 m Lb24bb7 0598843 b30 m Page 6 EN 501 87: 1996 2 Normative
35、references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any o
36、f these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 50052 1986 Cast aluminium alloy enclosures for gas-filled high-voltage switchgear an
37、d controlgear EN 50064 1989 Wrought aluminium and aluminium alloy enclosures for gas-filled high-voltage switchgear and controlgear EN 50068 1991 Wrought steel enclosures for gas-filled high-voltage switchgear and controlgear EN 50069 1991 Welded composite enclosures of cast and wrought aluminium al
38、loys for gas-filled high-voltage switchgear and controlgear EN 60298 1996 A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV (IEC 298:1990 + corrigendum April 1995 + Al:1994) EN IS0 9000 series Quality management and quality assurance standards
39、 (IS0 9000 series) IS0 3834 1994 Quality requirements for welding EN 45020 1993 General terms and their definitions concerning standardization and related activities (ISOAEC Guide 2: 1991 1 STD.BSI BS EN 50L87-ENGL 1997 Lb24bb9 0598844 577 3 Page 7 EN 501 87: 1996 Definitions 3.1 Compartment A part
40、of gas-filled switchgear and controlgear retaining the insulating gas under the prescribed conditions necessary to maintain safely the rated insulation level, protecting the equipment against external influences. 3.2 Manufacturer Individual or body finally responsible for designing and producing the
41、 compartment In this standard this is the switchgear manufacturer, even when the compartment is produced by a sub-manufacturer. 3.3 Pressure (gauge) used to determine the design of the compartment. It is at least the upper limit of pressure reached within the compartment at the design temperature. D
42、esign pressure (of a compartment) 3.4 Design temperature (of a compartment) - Highest temperature reached by the compartment which can occur under service con- ditions. This is generally the upper limit of ambient air temperature increased by the temperature rise due to the flow of rated normal curr
43、ent. - E = _. - - - * * NOTE:- Solar radiation and other relevant operating conditions shall be taken into account when they have a si nificant effect on the temperature of the compartment and on the mec anical properties of some materials. Similar1 , the effects of low temperatures on the propertie
44、s of some R m materia Y s shall be considered. 3.5 The pressure in bar (gauge) assigned by the manufacturer referred to atmospheric air conditions of 20 OC and 1 013 hPa at which the gas-filled compartment is filled before being put into service. Filling pressure (of a compartment) 4 Materials Any s
45、uitable materials or combination of materials may be used for the manufacture of compartments, typical examples are: Wrought mild steel Wrought austenitic stainless steel Wrought aluminium Cast aluminium Cast resin The properties of the materials should be taken from the applicable standards. The ma
46、teriais properties shall be verified either by a certificate from the supplier or tests carried out by the switchgear manufacturer. STD.BSI BS EN 50L87-ENGL 1777 Lb2qbb7 0578845 403 Page 8 EN 501 87: 1 996 5 Design 5.1 General Consideration for design of compartments for gas insulated switchgear pre
47、scribed in this clause takes into account that the compartments are subjected to particular operating conditions (see introduction) which distinguish them from parts for compressed air receivers and similar storage vessels. 5.2 Corrosion allowance The compartments are filled in service with a nonsor
48、rosive thoroughly dried gas, therefore, no internal corrosion allowance is necessary. 5.3 Design considerations The geometry of a compartment can be determined by electrical rather than mechani- cal considerations. This constraint can result in a compartment geometry which re- quires an unacceptable
49、 degree of calculation or which cannot be calculated at all. In the case of such a Compartment or a compartment for which calculations are not made, a proof test in accordance with clause 7.3 is necessary. When designing a compartment, account shall be taken of the following, if applicable: The possible evacuation of the compartments as part of the filling process. For compartments of this type it is usually necessary to evacuate the air before introducing gas pressure, this ensures purity of the gas. The evacuated condition is therefore not an operationa
