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【英文标准名称】:TestMethodforAlternating-CurrentMagneticPropertiesofAmorphousMaterialsatPowerFrequenciesUsingWattmeter-Ammeter-VoltmeterMethodwithRodialSpecimens
【原文标准名称】:用万用表测试非晶材料环形样品在电源频率下交流磁特性的方法
【标准号】:ANSI/ASTMA912-1993
【标准状态】:现行
【国别】:美国
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:非晶形状态;试验;材料试验;交流电流;磁学
【英文主题词】:testing;amorphousstate;alternatingcurrent;magnetism;materialstesting
【摘要】:Thistestmethodcoverstestsforvariousmagneticpropertiesofamorphousmaterialsatpowerfrequencies(25to400Hz)usingatoroidaltesttransformer.Thetermtoroidaltesttransformerisusedtodescribethetestdevicereservingthetermspecimentorefertothematerialusedinthetest.Thetestspecimenconsistsoftoroidallywoundflatstrip.Thistestmethodcoversthedeterminationofcoreloss,excitingpower,rmsandpeakexcitingcurrent,severaltypesofacpermeability,andrelatedpropertiesunderacmagnetizationatmoderateandhighinductionsatpowerfrequencies(25-70Hz).Withproperinstrumentationandspecimenpreparation,thistestmethodisacceptableformeasurementsatfrequenciesfrom5Hzto100kHz.Properinstrumentationimpliesthatalltestinstrumentshavetherequiredfrequencyband-width.AlsoseeAnnexA2.Thistestmethodalsoprovidesproceduresforcalculatingimpedancepermeabilityfrommeasuredvaluesofrmsexcitingcurrentandforcalculatingacpeakpermeabilityfrommeasuredpeakvaluesoftotalexcitingcurrentatmagnetizingforcesuptoabout10Oe(796A/m).Explanationofsymbolsandbriefdefinitionsappearinthetextofthistestmethod.TheofficialsymbolsanddefinitionsarelistedinTerminologyA340.ThistestmethodshallbeusedinconjunctionwithPracticeA34.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H04
【国际标准分类号】:77_040_99
【页数】:
【正文语种】:英语