Designation:A697/A697M−13StandardTestMethodforAlternatingCurrentMagneticPropertiesofLaminatedCoreSpecimenUsingVoltmeter-Ammeter-WattmeterMethods1ThisstandardisissuedunderthefixeddesignationA697/A697M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofseveralacmagneticpropertiesoflaminatedcoresmadefromflat-rolledmagneticmaterials.1.2Thistestmethodcoverstestequipmentandproceduresforthedeterminationofimpedancepermeabilityandexcitingpowerfromvoltageandcurrentmeasurements,andcorelossfromwattmetermeasurements.Thesetestsaremadeunderconditionsofsinusoidalflux.1.3Thistestmethodcoverstestsfortwogeneralcategories(1and2)ofcoresbasedonsizeandapplication.1.4Testsareprovidedforpowerandcontrolsizecores(Category1)operatingatinductionsof10to15kG[1.0to1.5T]andatfrequenciesof50,60,and400Hz.1.5Proceduresandtestsareprovidedforcouplingandmatchingtypetransformercores(Category2)overtherangeofinductionsfrom100G[0.01T]orlowerto10kG[1.0T]andaboveat50to60Hzorabovewhencoveredbysuitableprocurementspecifications.1.6Thistestmethodalsocoverstestsforcorelossandacimpedancepermeabilityunderincrementaltestconditions(acmagnetizationsuperimposedondcmagnetization)fortheabovecoretypesandatinductionsuptothosethatcausetheacexcitingcurrenttobecomeexcessivelydistortedorreachvaluesthatexceedthelimitsoftheindividualtestequipmentcomponents.1.7ThistestmethodshallbeusedinconjunctionwithPracticeA34/A34MandTerminologyA340.Itdependsuponthesedesignateddocumentsfordetailedinformationwhichwillnotberepeatedinthistestmethod.1.8Thevaluesandequationsstatedincustomary(cgs-emuandinch-pound)orSIunitsaretoberegardedseparatelyasstandard.Withinthisstandard,SIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyof...
