Guide for procurement of power station equipment -- Part 2-7: Electrical equipment - Switchgear and controlgear

This standard gives guidance on writing the technical specification for the procurement of switchgear and controlgear for use in electricity generating stations (power stations). This Guide for procurement is not applicable to equipment for use in the nuclear reactor plant area of nuclear power stations. Other possible applications of such equipment have not been considered in the preparation of this Guide.
This Guide covers switchgear and controlgear within installations primarily concerned with the generation of electrical power and, where appropriate, their interconnection with the transmission and/or distribution system. It also includes main connections (busbars) associated with generator circuits and the ancillary plant forming part of switchboards and/or switching circuits.
The equipment covered by this Guide is defined by its function rather than design type.  Therefore, the guidance to the specification is stated in performance terms rather than being specified by a detailed description of the equipment to be supplied.
This Guide indicates to potential purchasers how their specification should be prepared so that:
- the equipment type and capacity interfaces correctly with other elements of the systems;
- predicted performance is achieved;
- ancillary equipment is properly sized;
- reliability, availability and safety requirements are achieved;
- proper consideration is given to the evaluation process and the quality measures to be applied.
This Guide does not determine the type of specification (e.g. detailed, performance, functional) or the extent of supply for any given contract which is normally decided on the basis of the purchaser’s project strategy. It does not cover:
- any commercial, contractual or legal issues which are normally in separate parts of an enquiry;
- any allocation of responsibilities which are determined by the contract.
This Guide does not prescribe the arrangement of the documents in the enquiry.

Leitfaden für die Beschaffung von Ausrüstungen für Kraftwerke -- Teil 2-7: Elektrische Ausrüstung - Schaltanlagen

Guide pour l'acquisition d'équipements destinés aux centrales de production d'électricité -- Partie 2-7: Equipements électriques - Appareillage

Guide for procurement of power station equipment - Part 2-7: Electrical equipment - Switchgear and controlgear

General Information

Status
Published
Publication Date
31-Jan-2003
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Feb-2003
Due Date
01-Feb-2003
Completion Date
01-Feb-2003

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SIST EN 45510-2-7:2003
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Guide for procurement of power station equipment - Part 2-7: Electrical equipment - Switchgear and controlgearLeitfaden für die Beschaffung von Ausrüstungen für Kraftwerke -- Teil 2-7: Elektrische Ausrüstung - SchaltanlagenGuide pour l'acquisition d'équipements destinés aux centrales de production d'électricité -- Partie 2-7: Equipements électriques - AppareillageGuide for procurement of power station equipment -- Part 2-7: Electrical equipment - Switchgear and controlgear29.130.10Visokonapetostne stikalne in krmilne napraveHigh voltage switchgear and controlgear27.100Elektrarne na splošnoPower stations in generalICS:Ta slovenski standard je istoveten z:EN 45510-2-7:2002SIST EN 45510-2-7:2003en01-februar-2003SIST EN 45510-2-7:2003SLOVENSKI

STANDARD
SIST EN 45510-2-7:2003
EUROPEAN STANDARDEN 45510-2-7NORME EUROPÉENNEEUROPÄISCHE NORMAugust 2002
CEN Management Centre:CENELEC Central Secretariat:rue de Stassart, 36
B-1050 Brusselsrue de Stassart, 35
B-1050 Brussels©

2002 CEN/CENELEC -All rights of exploitation in any form and by any means reservedworldwide for CEN national members and for CENELEC members.Ref. No. EN 45510-2-7:2002 EICS 27.100; 29.160.30English versionGuide for procurement of power station equipmentPart 2-7: Electrical equipment –Switchgear and controlgearGuide pour l'acquisition d'équipementsdestinés aux centrales de productiond'électricitéPartie 2-7: Equipements électriques –AppareillageLeitfaden für die Beschaffung vonAusrüstungen für KraftwerkeTeil 2-7: Elektrische Ausrüstung -SchaltanlagenThis European Standard was approved by CEN and CENELEC on 2001-03-06.CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate theconditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists andbibliographical references concerning such national standards may be obtained on application to the CENEELEC CentralSecretariat or to any CEN or CENELEC member.This European Standard exists in three official versions (English, French, German). A version in any other language madeby translation under the responsibility of a CEN or CENELEC member into its own language and notified to the CENELECCentral Secretariat has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France,Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerlandand United Kingdom.CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark,Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and United Kingdom.SIST EN 45510-2-7:2003

EN 45510-2-7:2002- 2 -ContentsForeword...................................................................................................................................................... 41Scope.............................................................................................................................................. 62Normative references................................................................................................................... 63Definitions ..................................................................................................................................... 83.1Organisational terms.................................................................................................................... 83.2Technical terms............................................................................................................................. 93.3General terms ............................................................................................................................... 94Brief overall project description............................................................................................... 104.1Role and organisation of purchaser........................................................................................ 104.2Site location ................................................................................................................................ 104.3Equipment task........................................................................................................................... 104.4Equipment to be purchased...................................................................................................... 114.5Control and instrumentation..................................................................................................... 114.6Electrical supplies and other services.................................................................................... 114.7Other interfaces.......................................................................................................................... 114.8Project programme..................................................................................................................... 114.9Equipment identification systems............................................................................................ 115Extent of supply.......................................................................................................................... 126Terminal points........................................................................................................................... 137Operational requirements.......................................................................................................... 137.1Operating environment.............................................................................................................. 137.2Manning levels............................................................................................................................. 137.3Normal operation........................................................................................................................ 137.4Operating hours.......................................................................................................................... 147.5Start-up and shut-down............................................................................................................. 147.6Abnormal conditions.................................................................................................................. 147.7Further operational requirements............................................................................................ 148Life expectancy........................................................................................................................... 158.1Design life.................................................................................................................................... 158.2Components requiring periodic maintenance........................................................................ 159Performance requirements........................................................................................................ 159.1Duty............................................................................................................................................... 159.2Performance................................................................................................................................ 159.3Equipment margins.................................................................................................................... 169.4Availability.................................................................................................................................... 169.5Levels of component redundancy............................................................................................ 169.6Further performance requirements.......................................................................................... 1610Design and fabrication............................................................................................................... 1610.1Specific equipment features..................................................................................................... 1610.2Design justification..................................................................................................................... 2010.3Material selection........................................................................................................................ 2010.4Safety............................................................................................................................................ 2010.5Interchangeability....................................................................................................................... 2110.6Fabrication methods.................................................................................................................. 21SIST EN 45510-2-7:2003

- 3 -EN 45510-2-7:200211Maintenance requirements........................................................................................................ 2111.1Planned maintenance................................................................................................................. 2111.2Personnel safety......................................................................................................................... 2111.3Requirements for access........................................................................................................... 2111.4Lifting requirements................................................................................................................... 2111.5Special tools................................................................................................................................ 2111.6Test equipment........................................................................................................................... 2211.7Spare parts strategy................................................................................................................... 2211.8Special precautions.................................................................................................................... 2212Technical documentation requirements................................................................................. 2212.1Tender documentation............................................................................................................... 2212.2Contract documentation............................................................................................................ 2213Applicable legislation, regulations, standards and further requirements.......................... 2313.1Legislation and regulations....................................................................................................... 2313.2Standards..................................................................................................................................... 2313.3Further requirements................................................................................................................. 2314Evaluation criteria....................................................................................................................... 2314.1General......................................................................................................................................... 2314.2Technical criteria........................................................................................................................ 2315Quality measures........................................................................................................................ 2415.1General......................................................................................................................................... 2415.2Approvals procedure.................................................................................................................. 2415.3Inspection requirements............................................................................................................ 2415.4Non-conformity........................................................................................................................... 2516Site factors................................................................................................................................... 2516.1Access.......................................................................................................................................... 2516.2Facilities....................................................................................................................................... 2516.3Site specific requirements......................................................................................................... 2517Verification of specified performance..................................................................................... 2617.1General......................................................................................................................................... 2617.2Works tests.................................................................................................................................. 2617.3Tests during installation and commissioning........................................................................ 2617.4Technical conditions for trial run............................................................................................. 2717.5Functional and performance tests........................................................................................... 27Annex A (informative) Bibliography....................................................................................................... 28SIST EN 45510-2-7:2003

EN 45510-2-7:2002- 4 -ForewordThis standard takes the form of a recommendation and is therefore entitled a “Guide”.This Guide for procurement has been prepared by the CEN/CENELEC Joint Task Force Power Engineering(JTFPE) of which the secretariat is held by the British Standards Institution.The text of the draft was submitted to the formal vote and was approved by CEN and CENELEC asEN 45510-2-7 on 2001-03-06.The following dates were fixed:-latest date by which the EN has to be implementedat national level by publication of an identicalnational standard or by endorsement(dop)2003-03-01-latest date by which the national standards conflictingwith the EN have to be withdrawn(dow)2004-04-01This Guide for procurement has been prepared under mandates given to CEN and CENELEC by the EuropeanCommission and the European Free Trade Association.This Guide for procurement is a part of a series of Guides mandated to cover the procurement of power stationplant and equipment in conformity with European Procurement Directives. The Guides are:EN 45510: Guide for procurement of power station equipmentPart 1: Common clausesPart 2-1: Electrical equipment - Power transformersPart 2-2: Electrical equipment - Uninterruptible power suppliesPart 2-3: Electrical equipment - Stationary batteries and chargersPart 2-4: Electrical equipment - High power static convertorsPart 2-5: Electrical equipment - MotorsPart 2-6: Electrical equipment - GeneratorsPart 2-7: Electrical equipment - Switchgear and controlgearPart 2-8: Electrical equipment - Power cablesPart 2-9: Electrical equipment - Cabling systemsPart 3-1: Boilers - Water tube boilersPart 3-2: Boilers - Shell boilersPart 3-3: Boilers - Boilers with fluidized bed firingPart 4-1: Boiler auxiliaries - Equipment for reduction of dust emissionsPart 4-2: Boiler auxiliaries - Gas-air, steam-air and gas-gas heatersPart 4-3: Boiler auxiliaries - Draught plantPart 4-4: Boiler auxiliaries - Fuel preparation equipmentPart 4-5: Boiler auxiliaries - Coal handling and bulk storage plantPart 4-6: Boiler auxiliaries - Flue gas desulphurization ( De-SOx) plantPart 4-7: Boiler auxiliaries - Ash handling plantPart 4-8: Boiler auxiliaries - Dust handling plantPart 4-9: Boiler auxiliaries - SootblowersPart 4-10: Boiler auxiliaries - Flue gas denitrification (De-NOx) plantPart 5-1: Turbines - Steam turbinesPart 5-2: Turbines - Gas turbinesPart 5-3: Turbines - Wind turbinesPart 5-4: Turbines - Hydraulic turbines, storage pumps and pump-turbinesSIST EN 45510-2-7:2003

- 5 -EN 45510-2-7:2002Part 6-1: Turbine auxiliaries - DeaeratorsPart 6-2: Turbine auxiliaries - Feedwater heatersPart 6-3: Turbine auxiliaries - Condenser plantPart 6-4: Turbine auxiliaries - PumpsPart 6-5: Turbine auxiliaries - Dry cooling systemsPart 6-6: Turbine auxiliaries - Wet and wet/dry cooling towersPart 6-7: Turbine auxiliaries - Moisture separator reheatersPart 6-8: Turbine auxiliaries - CranesPart 6-9: Turbine auxiliaries - Cooling water systemsPart 7-1: Pipework and valves - High pressure piping systemsPart 7-2: Pipework and valves - Boiler and high pressure piping valvesPart 8-1: Control and instrumentationEN 45510-1 contains those clauses common to all the above Guides giving the provisions of a non equipmentspecific nature for use in the procurement of power station plant. EN 45510 is the responsibility of JTFPE. Theso called “common clauses”, as appropriate, also appear in italics in the documents specific to particularequipment.Where paragraphs of “common clauses” are omitted, each paragraph omitted is indicated by the symbol *****.In this Guide, words in bold type indicate that they have the meaning given in the definitions, clause 3.In this Guide, words and sentences not in italics are specific to this Guide and refer to the particular equipmentcovered.SIST EN 45510-2-7:2003

EN 45510-2-7:2002- 6 -1ScopeThis standard gives guidance on writing the technical specification for the procurement of switchgear andcontrolgear for use in electricity generating stations (power stations). This Guide for procurement is notapplicable to equipment for use in the nuclear reactor plant area of nuclear power stations. Other possibleapplications of such equipment have not been considered in the preparation of this Guide.This Guide covers switchgear and controlgear within installations primarily concerned with the generation ofelectrical power and, where appropriate, their interconnection with the transmission and/or distribution system.It also includes main connections (busbars) associated with generator circuits and the ancillary plant formingpart of switchboards and/or switching circuits.The equipment covered by this Guide is defined by its function rather than design type.

Therefore, theguidance to the specification is stated in performance terms rather than being specified by a detaileddescription of the equipment to be supplied.This Guide indicates to potential purchasers how their specification should be prepared so that:- the equipment type and capacity interfaces correctly with other elements of the systems;- predicted performance is achieved;- ancillary equipment is properly sized;- reliability, availability and safety requirements are achieved;- proper consideration is given to the evaluation process and the quality measures to be applied.This Guide does not determine the type of specification (e.g. detailed, performance, functional) or the extentof supply for any given contract which is normally decided on the basis of the purchaser’s project strategy.It does not cover:- any commercial, contractual or legal issues which are normally in separate parts of an enquiry;- any allocation of responsibilities which are determined by the contract.This Guide does not prescribe the arrangement of the documents in the enquiry.NOTE

As a comprehensive European environmental policy is still under preparation, this Guide does not address the environmentalimplications of the equipment.2Normative referencesThis Guide for Procurement incorporates by dated or undated reference, provisions from other publications.These normative references are cited in the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publications applyto this Guide only when incorporated in it by amendment or revision. For undated references, the latest editionof the publication referred to applies.European StandardsEN ISO 9001Quality systems - Model for quality assurance in design, development, production,installation and servicingEN ISO 9002Quality systems - Model for quality assurance in production, installation and servicingEN 60044-1Instrument transformers - Current transformers (IEC 60044-1, mod.)EN 60071seriesInsulation co-ordination (IEC 60071 series)EN 60129Alternating current disconnectors and earthing switches (IEC 60129)EN 60265-1High-voltage switches for rated voltages above 1 kV and less than 52 kV(IEC 60265-1)EN 60265-2High-voltage switches - Part 2: High-voltage switches for rated voltages of 52 kV andabove (IEC 60265-2)SIST EN 45510-2-7:2003

- 7 -EN 45510-2-7:2002EN 60282-1High-voltage fuses - Part 1: Current-limiting fuses (IEC 60282-1)EN 60298AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV andup to and including 52 kV (IEC 60298)EN 60420High-voltage alternating current switch-fuse combinations (IEC 60420)EN 60439-1Low-voltage switchgear and controlgear assemblies - Part 1: Type-tested andpartially type-tested assemblies (IEC 60439-1)EN 60439-3Low-voltage switchgear and controlgear assemblies - Part 3: Particular requirementsfor low-voltage switchgear and controlgear assemblies intended to be installed inplaces where unskilled persons have access for their use - Distribution boards(IEC 60439-3, mod.)EN 60439-4Low-voltage switchgear and controlgear assemblies - Part 4: Particular requirementsfor assemblies for construction sites (ACS) (IEC 60439-4)EN 60470High-voltage alternating current contactors and contactor-based motor starters(IEC 60470)EN 60517Gas-insulated metal-enclosed switchgear for rated voltages of 72,5 kV and above(IEC 60517)EN 60622Sealed-nickel-cadmium prismatic-rechargeable single cells (IEC 60622)EN 60623Vented nickel-cadmium prismatic rechargeable single cells (IEC 60623)EN 60644Specification for high-voltage fuse-links for motor circuit applications (IEC 60644)EN 60694Common clauses for high-voltage switchgear and controlgear standards (IEC 60694)EN 60865seriesShort-circuit currents - Calculation of effects (IEC 60865 series)EN 60896seriesStationary lead-acid batteries - General requirements and methods of tests(IEC 60896 series)EN 60947-1Low-voltage switchgear and controlgear - Part 1: General rules (IEC 60947-1, mod.)EN 60947-2Low-voltage switchgear and controlgear - Part 2: Circuit-breakers (IEC 60947-2)EN 60947-3Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units (IEC 60947-3)EN 60947-4-1Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters- Electromechanical contactors and motor-starters (IEC 60947-4-1)EN 60947-5-1Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and+ A12switching elements - Electromechanical control circuit devices (IEC 60947-5-1)EN 60947-6-1Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment -Automatic transfer switching equipment (IEC 60947-6-1)EN 60947-7-1Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminalblocks for copper conductors (IEC 60947-7-1)EN 61264Ceramic pressurized hollow insulators for high-voltage switchgear and controlgear+ Corr.(IEC 61264)EN 62271-100High-voltage switchgear and controlgear - Part 100: High-voltage alternating-currentcircuit-breakers (IEC 62271-100)SIST EN 45510-2-7:2003

EN 45510-2-7:2002- 8 -Harmonization Documents (HD)HD 554Voltage transformers (IEC 60186, mod.)HD 578Characteristics of indoor and outdoor post insulators for systems with nominalvoltages greater than 1 kV (IEC 60273)HD 637Power installations exceeding a.c. 1 kVInternational StandardsIEC 60050-191International electrotechnical vocabulary - Chapter 191: Dependability and Qualityof ServicesIEC 60050-441International electrotechnical vocabulary - Chapter 441: Switchgear, controlgear andfusesIEC 60466AC insulation-enclosed switchgear and controlgear for rated voltages above 1 kVand up to and including 38 kVIEC 60478Stabilized power-supplies, DC outputIEC 60815Guide for the selection of insulators in respect of polluted conditions3DefinitionsFor the purposes of this Guide, the following definitions apply:3.1 Organisational terms3.1.1purchaserrecipient of a product and/or a service provided by a supplier3.1.2supplierperson or organisation that provides a product and/or a service to the purchaser3.1.3specificationdocument stating technical requirements of the purchaser. It may form part of an enquiry issued by apurchaser3.1.4enquiryinvitation to tender issued by a purchaser. It will normally include a specification together with the necessarycontractual and commercial conditions3.1.5tenderoffer made by a tenderer in response to an enquiry3.1.6tendererperson or organisation submitting a tender for the equipment in response to the enquirySIST EN 45510-2-7:2003

- 9 -EN 45510-2-7:20023.1.7siteplace to which the equipment is to be delivered or where work is to be done by the supplier, together with somuch of the area surrounding as the supplier may, with the consent of the purchaser, use for the purposesof the contractNOTE

Further definitions of useful organisational terms may be found in EN ISO 8402 (see annex A).3.2 Technical termsThe terms switchgear and controlgear are used in accordance with the international definitions as given inIEC 60050-441. However, for simplicity throughout this Guide, the general term switchgear covers bothswitchgear and controlgear3.2.1busbara conductor with associated connections, joints and insulated supports forming a common electrical connectionbetween a number of circuits or individual pieces of apparatus3.3 General terms3.3.1equipmentplant, component, system and/or associated service to be provided in response to the enquiry3.3.2conformityfulfilment of specified requirements by a product, process or service3.3.3performanceobligations verified by specified tests3.3.4operating periodtime between planned outages or maintenance periods during which the equipment is in operation and/or doesnot restrict operational requirements of the power station3.3.5life expectancytime period over which the equipment might be expected to operate with planned maintenance but withoutreplacement of a significant component.

For example, a switching device is a significant component3.3.6design lifeoperating hours of the equipment on which design calculations are based3.3.7acceptabilitycompliance with criteria defined by the purchaser for assessing the suitability of equipment3.3.8equipment marginsallowance for design, fabrication or operating contingency defined in the specification. These are separateto those normally included by the supplier for his own purposes3.3.9proven equipmentequipment which may be demonstrated to be similar to that offered and has operated for a sufficient time tohave demonstrated performance and availabilitySIST EN 45510-2-7:2003

EN 45510-2-7:2002- 10 -3.3.10availabilityas defined in IEC 60050-1913.3.11reliabilityas defined in IEC 60050-1913.3.12maintainabilityas defined in IEC 60050-1914Brief overall project description4.1 Role and organisation of purchaserThe enquiry should define the purchaser’s role in the project, including whether the purchaser will assumeresponsibility for the planning and technical coordination of the project, or whether other organisations will beappointed to carry out all or part of this function. The enquiry should define all organisational interfaces andthe procedures to be employed for managing the contract and the site.4.2 Site locationThe specification should describe the geographical location of the site which may include surveying points,the previous use of the site and any local features such as impact of industrial or military activities and planningrestrictions.Where applicable, the specification should indicate site datum on specification drawings and specify siteand drawing orientation and define co-ordinate axes (x,y,z) and numbering order to ensure consistencybetween suppliers of connected equipment.Where appropriate, the specification should define the permitted ground loading, dimensional and timerestrictions on access routes up to but not including public roads or railways.The specification should identify, where appropriate, the environment of the site in which the equipment willoperate. The following factors may normally be included if appropriate:- climatic e.g. atmospheric pressure, annual variation of air and cooling water temperature, relative humidity,rain fall, icing, snow, wind velocity (normal and maximum), lightning;-geological e.g. seismic conditions and characteristics of subsoil (e.g. caverns, gliding stratifications, loadbearing capability of subsoils);-geographic e.g. elevation, influence of local topography and structures;-hydrological

e.g. flooding and tides.4.3 Equipment taskThe specification should describe in general terms the function, task or role of the equipment to bepurchased. e.g. whether it is part of a new power generating

plant, a modification to an existing powergenerating plant or replacement equipment.Where appropriate, the specification should define the function and the known limitations, if any, in theequipment connected to that which is being supplied so that the equipment may avoid imposing adverseconditions or the supplier may suggest modifications to connected equipment which wou

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