1、BRITISH STANDARD BS EN 50187:1997 Gas-filled compartments for a.c. switchgear and controlgear for rated voltages above 1 kV and up to and including52kV The European Standard EN 50187:1996 has the status of a British Standard ICS 29.120.60; 29.260BSEN50187:1997 This British Standard, having been prep
2、ared 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 BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference PEL/17/1 Draft for comment 93/205510 DC ISB
3、N 0 580 26917 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee PEL/17, High-voltage switchgear, controlgear and co-ordination committee, to Subcommittee PEL/17/1, High-voltage switchgear and controlgear, upon which the f
4、ollowing bodies were represented: ASTA Certification Services Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.) British Railways Board Copper Development Association ERA Technology Ltd. Electricity Association GAMBICA (BEAMA Ltd.) Ministry of Defence Safety A
5、ssessment Federation Ltd. Transmission and Distribution Association (BEAMA Limited) The following bodies were also represented in the drafting of the standard, through subcomittees and panels: Association of Consulting Engineers British Cable Makers Confederation Electrical Installation Equipment Ma
6、nufacturers Association (BEAMA Ltd.) Engineering Equipment and Materials Users Association Institution of Incorporated Executive Engineers Amendments issued since publication Amd. No. Date CommentsBSEN50187:1997 BSI 11-1998 i Contents Page Committees responsible Inside front cover National foreword
7、ii Text of EN 50187 2 List of references Inside back coverBSEN50187:1997 ii BSI 11-1998 National foreword This British Standard has been prepared by Subcommittee PEL/17/1 and is the English language version of EN 50187:1996 Gas-filled compartments for a.c. switchgear and controlgear for rated voltag
8、es above 1 kV and up to and including52 kV including its corrigendum, September1996 published by the European Committee for Electrotechnical Standardization (CENELEC). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsibl
9、e for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard EN 50052:1986 BS 6878:1988 Specification for high-voltage switchgear and controlgear for industrial u
10、se. Cast aluminium alloy enclosures for gas-filled high-voltage switchgear and controlgear EN 50064:1989 BS 7315:1990 Specification for wrought aluminium and aluminium alloy enclosures for gas-filled high-voltage switchgear and controlgear EN 50068:1991 BS EN 50068:1991 Specification for wrought ste
11、el enclosures for gas-filled high-voltage switchgear and controlgear EN 50069:1991 BS EN 50069:1991 Specification for welded composite enclosures of cast and wrought aluminium alloys for gas-filled high-voltage switchgear and controlgear EN 60298:1996 BS EN 60298:1996 A.C. metal-enclosed switchgear
12、and controlgear for rated voltages above 1 kV and up to and including 52 kV EN ISO 9 000 series BS EN ISO 9 000 series Quality management and quality assurance standards EN 45020:1993 BS EN 45020:1993 Glossary of terms for standardization and related activities Summary of pages This document compris
13、es a front cover, an inside front cover, pages i and ii, theENtitle page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.EUROPEAN
14、 STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50187 August 1996 ICS 29.120.60; 29.260.00 Descriptors: Enclosure, high-voltage switching devices, high-voltage metal-enclosed switchgear and controlgear, pressurized enclosure, gas-filled compartments for rated voltages above 1 kV and up to and including
15、 52 kV English version Gas-filled compartments for a.c. switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV Compartiments sous pression de gaz pourappareillage courant alternatif de tensionsassignes suprieures 1 kV etinfrieuresou gales 52 kV Gasgefllte Schottrume f
16、r Wechselstrom-Schaltgerte und -Schaltanlagen mit Nennspannungen ber 1 kV bis einschlielich 52 kV This European Standard was approved by CENELEC on 1995-11-28. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standa
17、rd 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, Frenc
18、h, 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, D
19、enmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrot
20、echnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 50187:1996 EEN50187:1996 BSI 11-1998 2 Foreword This European Standard was prepared by the Technical Committee CENELECTC17C, High-voltage enclosed switchgear and controlg
21、ear. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN50187 on 1995-11-28. The following dates were fixed: This European Standard is based on the general specifications given in EN60298:1996 which are however not sufficient to satisfy the conditions for the ser
22、vice allowance of pressurized high-voltage 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 v
23、erification of sound design by proof tests 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 pres
24、ent European Standard has been established 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 Directive76/767/EEC. National dev
25、iations from this European Standard are listed in annexA(informative). Contents Page Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions 4 4 Materials 4 5 Design 5 6 Manufacture and workmanschip 6 7 Inspection and testing 6 8 Pressure relief devices 6 9 Certification and marking 7 Annex
26、A (informative) A-deviations 8 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) 1996-12-01EN50187:1996
27、 BSI 11-1998 3 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 associated gas-filled equipment. Special consideration is given to these compartments for t
28、he following reasons: a) The compartments form the containment of electrical equipment, thus their shape is determined by electrical rather than mechanical considerations. b) The equipment is operated by competent persons (operators) only. c) As the thorough drying of the inert, non-corrosive gas-fi
29、lling medium is fundamental 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 allowance is required on the wall thickness of these compartments. d) The compartments are subject
30、ed to only small fluctuations of pressure as the gas-filling density shall be maintained within close limits to ensure satisfactory insulating and arc-quenching properties. Therefore, the compartments are not liable to fatigue due to pressure cycling. e) The operating pressure is relatively low. For
31、 the foregoing reasons, and to ensure the minimum disturbance hence reducing the risk of moisture and dust entering the compartments which would prevent correct electrical operation of the switchgear, no pressure tests shall be carried out after installation and before placing in service and no peri
32、odic inspection of the compartment interiors or pressure tests shall be carried out after the equipment is placed in service. 1 Scope 1.1 Type of equipment This standard applies to compartments pressurized at a maximum pressure of 3bar (gauge) and with a maximum product pressure volume of 2 000bar l
33、itres with inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor or outdoor installations ofACswitchgear and controlgear with rated voltages above 1kV up to and including 52kV where the gas is used principally for its dielectric and/or arc-quenching pro
34、perties. The compartments comprise parts of electrical equipment not necessarily limited to the following examples: Circuit breakers Switch disconnectors Disconnectors Earthing switches Current transformers Voltage transformers Busbars and connections Cable terminations Gas filled compartments havin
35、g a design pressure exceeding 3bar (gauge) or a product pressurevolume exceeding 2 000bar litres shall be designed, manufactured and tested in accordance with one or a combination of the following: EN 50052 EN 50064 EN 50068 EN 50069 1.2 Quality assurance The switchgear manufacturer shall be respons
36、ible for achieving and maintaining a consistent and adequate quality of product. Sufficient examinations shall be made by the compartment manufacturer to ensure that the materials, production and testing comply in all respects with the requirements of this standard and ISO3834. Inspection by users i
37、nspectors shall not absolve the switchgear manufacturer from this responsibility to exercise such quality assurance procedures as to ensure that the requirements and intent of this standard are satisfied. NOTEReference should be made to the ENISO9 000 series of standards for quality systems. 2 Norma
38、tive 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
39、any of 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).EN50187:1996 4 BSI 11-1998 3 Definitions 3.1 compartment a part of gas-filled switc
40、hgear 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 compartment. In thi
41、s standard this is the switchgear manufacturer, even when the compartment is produced by a sub-manufacturer 3.3 design pressure (of a compartment) 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
42、 temperature 3.4 design temperature (of a compartment) highest temperature reached by the compartment which can occur under service conditions. This is generally the upper limit of ambient air temperature increased by the temperature rise due to the flow of rated normal current NOTESolar radiation a
43、nd other relevant operating conditions shall be taken into account when they have a significant effect on the temperature of the compartment and on the mechanical properties of some materials. Similarly, the effects of low temperatures on the properties of some materials shall be considered. 3.5 fil
44、ling pressure (of a compartment) the pressure in bar (gauge) assigned by the manufacturer referred to atmospheric air conditions of 20C and 1013hPa at which the gas-filled compartment is filled before being put into service 4 Materials Any suitable materials or combination of materials may be used f
45、or 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 materials properties shall be verified either by a certificat
46、e from the supplier or tests carried out by the switchgear manufacturer. EN 50052 1986 Cast aluminium alloy enclosures for gas-filled high-voltage switchgear and controlgear EN 50064 1989 Wrought aluminium and aluminium alloy enclosures for gas-filled high-voltage switchgear and controlgear EN 50068
47、 1991 Wrought steel enclosures for gas-filled high-voltage switchgear and controlgear EN 50069 1991 Welded composite enclosures of cast and wrought aluminium alloys for gas-filled high-voltage switchgear and controlgear EN 60298 1996 A.C. metal-enclosed switchgear and controlgear for rated voltages
48、above 1 kV and up to and including 52 kV (IEC 298:1990 + corrigendum April 1995 + A1:1994) EN ISO 9 000 series Quality management and quality assurance standards (ISO 9 000 series) ISO 3834 1994 Quality requirements for welding EN 45020 1993 General terms and their definitions concerning standardiza
49、tion and related activities (ISO/IEC Guide 2:1991)EN50187:1996 BSI 11-1998 5 5 Design 5.1 General Consideration for design of compartments for gas insulated switchgear prescribed 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 non-corrosive thoroughly dried gas, therefore, no internal corrosion allowance is nec
