IEEEStd18™-2002(RevisionofIEEEStd18-1992)IEEEStandards18TMIEEEStandardforShuntPowerCapacitorsPublishedbyTheInstituteofElectricalandElectronicsEngineers,Inc.3ParkAvenue,NewYork,NY10016-5997,USA15October2002IEEEPowerEngineeringSocietySponsoredbytheTransmissionandDistributionCommitteeIEEEStandardsPrint:SH94981PDF:SS94981RecognizedasanAmericanNationalStandard(ANSI)TheInstituteofElectricalandElectronicsEngineers,Inc.3ParkAvenue,NewYork,NY10016-5997,USACopyright©2002bytheInstituteofElectricalandElectronicsEngineers,Inc.Allrightsreserved.Published15October2002.PrintedintheUnitedStatesofAmerica.Print:ISBN0-7381-3243-8SH94981PDF:ISBN0-7381-3244-6SS94981Nopartofthispublicationmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.IEEEStd18™-2002(RevisionofIEEEStd18-1992)IEEEStandardforShuntPowerCapacitorsSponsorTransmissionandDistributionCommitteeoftheIEEEPowerEngineeringSocietyApproved27July2002AmericanNationalStandardsInstituteApproved21March2002IEEE-SAStandardsBoardAbstract:Capacitorsrated216Vorhigher,2.5kvarormore,anddesignedforshuntconnectiontoalternating-currenttransmissionanddistributionsystemsoperatingatanominalfrequencyof50Hzor60Hz,withintheguidelinesofIEEEStd1036-1992,areconsidered.Keywords:capacitors,shuntconnection,transmissionanddistributionsystemsIEEEStandardsdocumentsaredevelopedwithintheIEEESocietiesandtheStandardsCoordinatingCommitteesoftheIEEEStandardsAssociation(IEEE-SA)StandardsBoard.TheIEEEdevelopsitsstandardsthroughaconsensusdevelop-mentprocess,approvedbytheAmericanNationalStandardsInstitute,whichbringstogethervolunteersrepresentingvariedviewpointsandintereststoachievethefinalproduct.VolunteersarenotnecessarilymembersoftheInstituteandservewith-outcompensation.WhiletheIEEEadministerstheprocessandestablishesrulestopromotefairnessintheconsensusdevel-opmentprocess,theIEEEdoesnotindependentlyevaluate,test,orverifytheaccuracyofanyoftheinformationcontainedinitsstandards.UseofanIEEEStandardiswhollyvoluntary.TheIEEEdisclaimsliabilityforanypersonalinjury,propertyorotherdam-age,ofanynaturewhatsoever,whetherspecial,indirect,consequential,orcompensatory,directlyorindirectlyresultingfromthepublication,useof,orrelianceuponthis,oranyotherIEEEStandarddocument.TheIEEEdoesnotwarrantorrepresenttheaccuracyorcontentofthematerialcontainedherein,andexpresslydisclaimsanyexpressorimpliedwarranty,includinganyimpliedwarrantyofmerchantabilityorfitnessforaspecificpurpose,orthattheuseofthematerialcontainedhereinisfreefrompatentinfringement.IEEEStandardsdocumentsaresupplied“ASIS.”TheexistenceofanIEEEStandarddoesnotimplythattherearenootherwaystoproduce,test,measure,purchase,market,orprovideothergoodsandservicesrelatedtothescopeoftheIEEEStandard.Furthermore,theviewpointexpressedatthetimeastandardisapprovedandissuedissubjecttochangebroughtaboutthroughdevelopmentsinthestateoftheartandcommentsreceivedfromusersofthestandard.EveryIEEEStandardissubjectedtoreviewatleasteveryfiveyearsforrevi-sionorreaffirmation.Whenadocumentismorethanfiveyearsoldandhasnotbeenreaffirmed,itisreasonabletoconcludethatitscontents,althoughstillofsomevalue,donotwhollyreflectthepresentstateoftheart.UsersarecautionedtochecktodeterminethattheyhavethelatesteditionofanyIEEEStandard.Inpublishingandmakingthisdocumentavailable,theIEEEisnotsuggestingorrenderingprofessionalorotherservicesfor,oronbehalfof,anypersonorentity.NoristheIEEEundertakingtoperformanydutyowedbyanyotherpersonorentitytoanother.Anypersonutilizingthis,andanyotherIEEEStandardsdocument,shouldrelyupontheadviceofacom-petentprofessionalindeterminingtheexerciseofreasonablecareinanygivencircumstances.Interpretations:Occasionallyquestionsmayariseregardingthemeaningofportionsofstandardsastheyrelatetospecificapplications.WhentheneedforinterpretationsisbroughttotheattentionofIEEE,theInstitutewillinitiateactiontoprepareappropriateresponses.SinceIEEEStandardsrepresentaconsensusofconcernedinterests,itisimportanttoensurethatanyinterpretationhasalsoreceivedtheconcurrenceofabalanceofinterests.Forthisreason,IEEEandthemembersofitssoci-etiesandStandardsCoordinatingCommitteesarenotabletoprovideaninstantresponsetointerpretationrequestsexceptinthosecaseswherethematterhaspreviouslyreceivedformalconsideration.CommentsforrevisionofIEEEStandardsarewelcomefromanyinterestedparty,regardlessofmembershipaffiliationwithIEEE.Suggestionsforchangesindocumentsshouldbeintheformofaproposedchangeoftext,togetherwithappropriatesupportingcomments.Commentsonstandardsandrequestsforinterpretationsshouldbeaddressedto:Secretary,IEEE-SAStandardsBoard445HoesLaneP.O.Box1331Piscataway,NJ08855-1331USATheIEEEanditsdesigneesarethesoleentitiesthatmayauthorizetheuseoftheIEEE-ownedcertificationmarksand/ortrademarkstoindicatecompliancewiththematerialssetforthherein.AuthorizationtophotocopyportionsofanyindividualstandardforinternalorpersonaluseisgrantedbytheInstituteofElectricalandElectronicsEngineers,Inc.,providedthattheappropriatefeeispaidtoCopyrightClearanceCenter.Toarrangeforpaymentoflicensingfee,pl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