ASTM A804/A804M-2004(2009)e1 在电力频率下用薄钢板型试样对材料交流磁特性的标准试验方法
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【英文标准名称】:StandardTestMethodsforAlternating-CurrentMagneticPropertiesofMaterialsatPowerFrequenciesUsingSheet-TypeTestSpecimens
【原文标准名称】:在电力频率下用薄钢板型试样对材料交流磁特性的标准试验方法
【标准号】:ASTMA804/A804M-2004(2009)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:A06.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:alternatingcurrent;ammeter;coreloss;magnetic;magneticfluxdensity;magneticmaterial;magnetictest;permeability;powerfrequency;sheet;wattmeter;voltmeter;A-C(alternating-current)magneticproperties;Alternating-currentpermeability
【摘要】:MaterialsEvaluation8212;ThesetestmethodsweredevelopedtosupplementthetestingofEpsteinspecimensforapplicationsinvolvingtheuseofflat,shearedlaminationswherethetestingofEpsteinspecimensineithertheas-shearedorstress-relief-annealedconditionfailstoprovidethemostsatisfactorymethodofpredictingmagneticperformanceintheapplication.Asaprincipalexample,thetestmethodshavebeenfoundparticularlyapplicabletothecontrolandevaluationofthemagneticpropertiesofthermallyflattened,grain-orientedelectricalsteel(ConditionF5,SpecificationA876)usedaslaminationstockforcoresofpowertransformers.Inasmuchasthetestmethodscanonlybereliablyusedtodetermineunidirectionalmagneticproperties,thetestmethodshavelimitedapplicabilitytothetestingoffullyprocessednonorientedelectricalsteelsasnormallypracticed(SpecificationA677).SpecificationAcceptance8212;Thereproducibilityoftestresultsandtheaccuracyrelativetothe25-cm[250-mm]Epsteinmethodoftestareconsideredsuchastorenderthetestmethodssuitableformaterialsspecificationtesting.InterpretationofTestResults8212;Becauseofspecimensize,considerablevariationinmagneticpropertiesmaybepresentwithinasinglespecimenorbetweenspecimensthatmaybecombinedfortestingpurposes.Also,variationsmayexistintestvaluesthatarecombinedtorepresentatestlotofmaterial.Testresultsreportedwilltherefore,ingeneral,representaveragesofmagneticqualityandincertainapplications,particularlythoseinvolvingnarrowwidthsoflaminations,deviationsinmagneticperformancefromthoseexpectedfromreporteddatamayoccurattimes.Additionally,applicationoftestdatatothedesignorevaluationofaparticularmagneticdevicemustrecognizetheinfluenceofmagneticcircuitryuponperformanceandthepossibledeteriorationinmagneticpropertiesarisingfromconstructionofthedevice.RecommendedStandardTests8212;Thesetestmethodshavebeenprincipallyappliedtothemagnetictestingofthermallyflattened,grain-orientedelectricalsteelsat50and60Hz.Specificcorelossat15or17kG[1.5or1.7T]andpeakpermeability(ifrequired)at10Oe[796A/m]aretherecommendedparametersforevaluatingthisclassofmaterial.1.1Thesetestmethodscoverthedeterminationofspecificcorelossandpeakpermeabilityofsinglelayersofsheet-typespecimenstestedwithnormalexcitationatafrequencyof50or60Hz.Note18212;Thesetestmethodshavebeenappliedonlyatthecommercialpowerfrequencies,50and60Hz,butwithproperinstrumentationandapplicationoftheprinciplesoftestingandcalibrationembodiedinthetestmethods,theyarebelievedtobeadaptabletotestingatfrequenciesrangingfrom25to400Hz.1.2Thesetestmethodsusecalibrationproceduresthatprovidecorrelationwiththe25-cm[250-mm]Epsteintest.1.3Therangeoftestmagneticfluxdensitiesisgovernedbythepropertiesofthetestspecimenandbytheavailableinstrumentsandotherequipmentcomponents.Normally,nonorientedelectricalsteelscanbetestedoverarangefrom8to16kG[0.8to1.6T]forcoreloss.Fororientedelectricalsteels,thenormalrangeextendsto18kG[1.8T].Maximummagneticfluxdensitiesinpeakpermeabilitytestingarelimitedprincipallybyheating......
【中国标准分类号】:H21
【国际标准分类号】:77_140_40
【页数】:16P.;A4
【正文语种】:英语
【原文标准名称】:在电力频率下用薄钢板型试样对材料交流磁特性的标准试验方法
【标准号】:ASTMA804/A804M-2004(2009)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:A06.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:alternatingcurrent;ammeter;coreloss;magnetic;magneticfluxdensity;magneticmaterial;magnetictest;permeability;powerfrequency;sheet;wattmeter;voltmeter;A-C(alternating-current)magneticproperties;Alternating-currentpermeability
【摘要】:MaterialsEvaluation8212;ThesetestmethodsweredevelopedtosupplementthetestingofEpsteinspecimensforapplicationsinvolvingtheuseofflat,shearedlaminationswherethetestingofEpsteinspecimensineithertheas-shearedorstress-relief-annealedconditionfailstoprovidethemostsatisfactorymethodofpredictingmagneticperformanceintheapplication.Asaprincipalexample,thetestmethodshavebeenfoundparticularlyapplicabletothecontrolandevaluationofthemagneticpropertiesofthermallyflattened,grain-orientedelectricalsteel(ConditionF5,SpecificationA876)usedaslaminationstockforcoresofpowertransformers.Inasmuchasthetestmethodscanonlybereliablyusedtodetermineunidirectionalmagneticproperties,thetestmethodshavelimitedapplicabilitytothetestingoffullyprocessednonorientedelectricalsteelsasnormallypracticed(SpecificationA677).SpecificationAcceptance8212;Thereproducibilityoftestresultsandtheaccuracyrelativetothe25-cm[250-mm]Epsteinmethodoftestareconsideredsuchastorenderthetestmethodssuitableformaterialsspecificationtesting.InterpretationofTestResults8212;Becauseofspecimensize,considerablevariationinmagneticpropertiesmaybepresentwithinasinglespecimenorbetweenspecimensthatmaybecombinedfortestingpurposes.Also,variationsmayexistintestvaluesthatarecombinedtorepresentatestlotofmaterial.Testresultsreportedwilltherefore,ingeneral,representaveragesofmagneticqualityandincertainapplications,particularlythoseinvolvingnarrowwidthsoflaminations,deviationsinmagneticperformancefromthoseexpectedfromreporteddatamayoccurattimes.Additionally,applicationoftestdatatothedesignorevaluationofaparticularmagneticdevicemustrecognizetheinfluenceofmagneticcircuitryuponperformanceandthepossibledeteriorationinmagneticpropertiesarisingfromconstructionofthedevice.RecommendedStandardTests8212;Thesetestmethodshavebeenprincipallyappliedtothemagnetictestingofthermallyflattened,grain-orientedelectricalsteelsat50and60Hz.Specificcorelossat15or17kG[1.5or1.7T]andpeakpermeability(ifrequired)at10Oe[796A/m]aretherecommendedparametersforevaluatingthisclassofmaterial.1.1Thesetestmethodscoverthedeterminationofspecificcorelossandpeakpermeabilityofsinglelayersofsheet-typespecimenstestedwithnormalexcitationatafrequencyof50or60Hz.Note18212;Thesetestmethodshavebeenappliedonlyatthecommercialpowerfrequencies,50and60Hz,butwithproperinstrumentationandapplicationoftheprinciplesoftestingandcalibrationembodiedinthetestmethods,theyarebelievedtobeadaptabletotestingatfrequenciesrangingfrom25to400Hz.1.2Thesetestmethodsusecalibrationproceduresthatprovidecorrelationwiththe25-cm[250-mm]Epsteintest.1.3Therangeoftestmagneticfluxdensitiesisgovernedbythepropertiesofthetestspecimenandbytheavailableinstrumentsandotherequipmentcomponents.Normally,nonorientedelectricalsteelscanbetestedoverarangefrom8to16kG[0.8to1.6T]forcoreloss.Fororientedelectricalsteels,thenormalrangeextendsto18kG[1.8T].Maximummagneticfluxdensitiesinpeakpermeabilitytestingarelimitedprincipallybyheating......
【中国标准分类号】:H21
【国际标准分类号】:77_140_40
【页数】:16P.;A4
【正文语种】:英语
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