MV Circuit Breaker Switchgear 38 kVWord文档格式.docx

MV Circuit Breaker Switchgear 38 kVWord文档格式.docx

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A.SubmitshopdrawingsandproductinformationinthequantitieslistedaccordingtotheConditionsoftheContract.Alltransmittalsshallbeidentifiedbypurchasername,purchaserlocationandpurchaser’sordernumber.

B.Approvaldocumentsshallinclude:

1.Generalarrangementdrawingshowingdimensionedelevationandfloorplan,foundationdetailsandone-linediagram

2.Panelarrangementdrawingshowinglayoutofdevicesonthepaneldoors

3.Three-linediagrams

4.Schematics

5.Nameplateengravingdrawings

6.Electricalbillofmaterial.

C.Finaldocumentsshallinclude:

1.Documentslistedin1.3.Babove

2.Wiringdiagrams

3.Recommendedsparepartslistforstart-upsupport

4.Instructionmanual.

D.Productdata:

Includefeatures,characteristicsandratingsofindividualcircuitbreakersandothercomponents.

E.Shopdrawings:

Detailequipmentassembliesandindicatedimensions,weights,requiredclearances,methodoffieldassembly,componentsandlocationandsizeofeachfieldconnection.Includethefollowing:

1.Nameplatelegends

2.Busconfigurationwithsizeandnumberofconductorsineachbusrun,includingphaseandgroundconductorsofmainandbranchbuses

3.Currentratingsofbuses

4.Short-timeandshort-circuitratingsofswitchgearassembly

5.Detailedwiringdiagramsshowingwiringforpower,signalandcontrolsystemsincludingdifferentiationbetweenmanufacturer-installedandfield-installedwiring.

1.4QUALITYASSURANCE

A.Manufacturerqualifications:

Engageafirmwithatleast20yearsexperienceinmanufacturingmedium-voltage,gas-insulated,vacuumcircuitbreakerswitchgear.Themanufacturer’sproposedproductshallhavebeenproducedforatleast10yearspriortotheduedatefortheequipmentproposal.Themanufactureroftheswitchgearassemblyshallalsomanufacturethemedium-voltagecircuitbreakers.

B.Complywithrequirementsoflatestrevisionsofapplicableindustrystandards,specificallyincludingthefollowing:

1.Gas-insulatedswitchgear.

a.IEC62271-200-High-voltageswitchgear

b.IEC62271-1-High-voltagecommonrequirements

c.IEC60044-7–Currenttransformers

d.IEC60044-8–Voltagetransformers

e.ANSI/IEEEC37.20.2（Whereapplicable.）–Metal-cladswitchgear

f.ANSIC37.55（Whereapplicable.）–Conformancetests

g.UL-Listed（Optional.Availabilitydependsonsectiondetailedrequirements.）

h.ANSI/IEEEC37.20.7-2007–Internalarcingtests.

2.Circuitbreakers.

a.IEC62271-100–High-voltagecircuitbreakers

b.ANSI/IEEEC37.04-Ratingstructureforhigh-voltagecircuitbreakers

c.ANSI/IEEEC37.09–High-voltagecircuitbreakertesting

d.ANSI/IEEEC37.06–Preferredratingsforhigh-voltagecircuitbreakers

e.ANSI/IEEEC37.010

f.ANSIC37.54（Whereapplicable.）–Conformancetests.

3.Currenttransformers（CTs）.

a.ANSI/IEEEC57.13–Instrumenttransformers

b.IEC60044-1–Currenttransformers

c.IEC60044-8–Currenttransformers（electronic）.

4.Voltagetransformers（VTs）.

b.IEC60044-2–Voltagetransformers

c.IEC60044-7–Voltagetransformers（electronic）.

5.Disconnect,isolationandthree-positionswitches.

a.IEC62271-102–Disconnectorsandearthingswitches.

6.General.

a.NationalElectricCode（NEC）®

NFPA70.

1.5DELIVERY,STORAGEANDHANDLING

A.Deliverinconvenientshippinggroups.Shippinggroupsshallnotexceed10feetinlength.

B.Outdoorwalk-insingle-aisleswitchgearshallbeshippedfullyassembledexceptfornecessaryshippingsplitsfortransportationandhandling.

PART2-PRODUCTS

2.1MANUFACTURERS

A.[Themedium-voltagegas-insulatedvacuumcircuitbreakerswitchgearassemblyshallbetype8DA10（single-bus）or8DB10（double-bus）asmanufacturedbySIEMENSorpre-approvedequal.Approvedmanufacturersareasfollows:

1.SIEMENS

2..]

2.2RATINGS

A.Systemconfiguration:

Switchgearshallbesuitableforapplicationinthree-phase,three-wire,

60Hzgrounded-neutralsystem.

B.Electricalratings:

1.Ratednominalsystemvoltage,kV:

[4.16][7.2][12.47][13.2][13.8][22.0][26.0][34.5]

2.Maximumdesignvoltage,kV:

[4.76][8.25][15.0][27.6][38.0]

3.Ratedmainbuscurrent:

[1,200A][2,000A][2,500A][3,150A][4,000A]

4.Ratedinterrupting（short-circuit）current,kAsymmetrical:

[25][31.5][40]

5.Ratedshort-timecurrent,kA:

6.Ratedpower-frequencywithstandvoltage,kV（one-minute）:

[19][36][60][80]

7.Ratedimpulsewithstandvoltage,kV（BIL）:

[60][95][125][150][170][200]

8.Continuouscurrentratingofthemaincircuitbreaker:

[1,200A][2,000A][2,500A]

9.Continuouscurrentratingofthetiecircuitbreaker:

10.Continuouscurrentratingofthefeedercircuitbreaker:

[1,200A][2,000A][2,500A].

2.3GENERALREQUIREMENTS

A.Themedium-voltage,gas-insulatedvacuumcircuitbreakerswitchgearshallbemetal-cladandshallmeetANSI/IEEEC37.20.2exceptfordifferencesrelatedtofixedcircuitbreakerconstructionandisolated-phasebusarrangement.Allcomponentsoftheswitchgear（forexample,circuitbreakers,busbar,disconnectswitches,groundingswitches,VT’s,etc.）shallbeingroundedaluminummetalenclosures.Theconstructionshallwithstandforces（repeatedly,withoutdistortion）causedbyclosingandopeningofthecircuitbreaker.Theswitchgearshallbecapableofwithstandingallstressesproducedbyfaultconditionsuptoandincludingtheratedshort-circuitcurrentspecifiedin2.2.Bwithoutdamage.

B.Theswitchgearshallbeclassifiedasarc-resistantwithtype2Aaccessibility,inaccordancewithANSI/IEEEC37.20.7-2007testrequirements.

C.EachcurrentcarryingcomponentoftheequipmentshallbecapableofcontinuousoperationatthespecifiedratingswithoutexceedingthemaximumtemperaturerisesstatedintheANSI/IEEEandIECstandards.

D.Theswitchgearlineupshallbedesignedandmanufacturedwithprovisionforfutureexpansiononeachendexceptwherethearrangementdoesnotallowextension.Futureextensionoftheswitchgearwillrequirethemainbusbartobede-energizedandtheSF6gasevacuated.Manufacturershallofferasanoptionafuturebusextensiondisconnectswitchinordertoavoidde-energizationofthemainbusbar.Whenextendingeitherendoftheswitchgear,itshallonlybenecessarytoevacuatethebusextensionswitchSF6gascompartmentandremoveendpanelsfortheassociatedbusbars.Noothergascompartmentshallbeaffected.Thefutureextensionswitchwillnotaddanysectiontothelineuplength.

E.Theenclosureshousingtheprimary（medium-voltage）componentsshallbeconstructedofgas-tight,castaluminum.Ferrousmetalcomponentsshallbefinishedwithelectrostaticallyappliedpaintfinishinmanufacturer’sstandardlightgraycolor.Mechanismpartsnotsuitableforpaintingshallbeplatedforcorrosionresistance.

F.Themedium-voltageenclosureshallbefactoryassembledandmodularindesign.Medium-voltagecomponentsshallbeenclosedincastaluminum,hermeticallysealed,single-pole（phase）enclosurestoeliminatethepossibilityofphase-to-phasefaultsintheswitchgear.

G.Themedium-voltageenclosureshallbepressurizedwithSF6gastoisolateenergizedcomponentsfromenvironmentalinfluences,thusallowinglongintervalsbetweenmaintenance.Minormaintenanceoftheprimarycomponentsshallberequiredat10-yearintervalsandmajormaintenanceat20-yearintervals.Theswitchgearshallbedesignedsothatnormalservice,inspection,maintenance,groundingofhigh-voltagecablesandeliminationofelectrostaticchargescanbecarriedoutsafelywithadjacentsectionsenergized.

H.Acontinuousgroundbusshallrunthelengthofaswitchgeargroupforreliablegrounding.Eachfeedersectionhousingshallbeconnectedtotheswitchgeargroundbus.

I.Conductorsandconnectorsforthebusbarsshallbecopper,designedtocarryratedcontinuouscurrentat40°

Cambienttemperatureandshallwithstandtheratedshort-circuitcurrentspecifiedin2.2.B.Thesurfacesoftheconductorsshallhaveasmoothfinishtopreventanyelectricaldischarges.Disconnectandgroundswitchcontactsshallbesilver-platedtoprovidehighconductivityandshallmatchtheratingoftheassociatedbusbarorcircuitbreaker.

J.Thefrontofeachswitchgearsectionshallconsistoffourseparatecompartmentsforthefollowingmaincomponents:

1.Protectiverelaysandcontrolslocatedinthetopcompartment.Terminalblocks,CTconnections,VTconnectionsandmiscellaneouscontroldevicesshallbelocatedinthiscompartment.Connectionterminalblocksforpurchaser’sexternalconnectionswillbelocatedinthiscompartment.Operationoftheswitchgearshallnotbeaffectedbyopeninganyofthelow-voltagecompartmentdoors.

2.Three-positionswitchoperatingmechanismwithallserviceableitemsaccessiblefromthefront.

3.Circuitbreakeroperatingmechanismwithallserviceableitemsaccessiblefromthefront.

4.Thelowercompartmentshallbeavailable