Designation:D3382−22StandardTestMethodsforMeasurementofEnergyandIntegratedChargeTransferDuetoPartialDischarges(Corona)UsingBridgeTechniques1ThisstandardisissuedunderthefixeddesignationD3382;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thesetestmethodscovertwobridgetechniquesformeasuringtheenergyandintegratedchargeofpulseandpseudoglowpartialdischarges:1.2TestMethodAmakesuseofcapacitanceandlosscharacteristicssuchasmeasuredbythetransformerratio-armbridgeorthehigh-voltageScheringbridge(TestMethodsD150).TestMethodAhasbeenfoundusefultoobtaintheintegratedchargetransferandenergylossduetopartialdischargesinadielectricfromthemeasuredincreaseincapacitanceandtanδwithvoltage.(SeealsoIEEE286andIEEE1434)1.3TestMethodBmakesuseofasomewhatdifferentbridgecircuit,identifiedasacharge-voltage-trace(parallelo-gram)technique,whichindicatesdirectlyonanoscilloscopetheintegratedchargetransferandthemagnitudeoftheenergylossduetopartialdischarges.1.4Bothtestmethodsareintendedtosupplementthemeasurementanddetectionofpulse-typepartialdischargesascoveredbyTestMethodD1868,bymeasuringthesumofbothpulseandpseudoglowdischargespercycleintermsoftheirchargeandenergy.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionstatementsaregiveninSection7.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D...
