ASTM A598/A598M-2002(2007) 磁放大器芯磁性的标准试验方法
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【英文标准名称】:StandardTestMethodforMagneticPropertiesofMagneticAmplifierCores
【原文标准名称】:磁放大器芯磁性的标准试验方法
【标准号】:ASTMA598/A598M-2002(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:core;coregain;gainfactor;induction;magneticamplifier;magneticfieldstrength;Amplifierelectronics;Constantcurrentfluxresettestmethod(CCFR);Magneticamplifiercores;Magneticproperties
【摘要】:Themethodofexcitationsimulates,toapracticaldegree,theoperationofamagneticcoreinaself-saturatingmagneticamplifier.Thepropertiesmeasuredarerelatedtothequalityofperformanceofthecoresinmagneticamplifiersandareusefulforthespecificationofmaterialsforsuchcores.1.1Thistestmethodcoversthedeterminationofthemagneticperformanceoffullyprocessedcoresformagneticamplifier-typeapplications.1.2Testsmaybeconductedatexcitationfrequenciesof60,400,1600Hz,orhigherfrequencies.1.3Permissiblecoresizesforthistestmethodarelimitedonlybytheavailablepowersuppliesandtherangeandsensitivityoftheinstrumentation.1.4Atspecifiedvaluesoffull-wavesinusoidal-currentexcitation,Hmax,thistestmethodprovidesproceduresofdeterminingthecorrespondingvalueofmaximuminduction,Bmax.1.5Atspecifiedvaluesofhalf-wavesinusoidal-currentexcitation,thistestmethodprovidesproceduresfordeterminingtheresidualinduction,Br.1.6Atincreasedspecifiedvaluesofhalf-wavesinusoidal-currentexcitation,thistestmethodprovidesproceduresfordeterminingthedcreversebiasingmagneticfieldstrength,H1,requiredtoresettheinductioninthecorematerialpastBrtoavaluewherethetotalinductionchange,x0394;B1,becomesapproximatelyonethirdoftheinductionchange,2Bp.Italsoprovidesproceduresfordeterminingtheadditionaldcresetmagneticfieldstrength,x0394;H,which,combinedwithH1,isthevaluerequiredtoresettheinductioninthecorematerialpastBrtoavaluewherethetotalinductionchange,x0394;B2,becomesapproximatelytwothirdsoftheinductionchange2Bp.1.7Thistestmethodspecifiesproceduresfordeterminingcoregainfromthecorrespondingbiasingandinductionchanges,x0394;Handx0394;B.1.8Thistestmethodcoverstestproceduresandrequirementsforevaluationoffinishedcoreswhicharetobeusedinmagnetic-amplifier-typeapplications.Itisnotatestforbasic-materialmagneticproperties.1.9ThistestmethodshallbeusedinconjunctionwithPracticeA34/A34.1.10Explanationsofsymbolsandabbreviateddefinitionsappearinthetextofthistestmethod.TheofficialsymbolsanddefinitionsarelistedinTerminologyA340.1.11Thevaluesandequationsstatedincustomary(cgs-emuandinch-pound)orSIunitsaretoberegardedseparatelyasstandard.Withinthistestmethod,SIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththistestmethod.1.12Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandard......
【中国标准分类号】:L19
【国际标准分类号】:29_100_10
【页数】:17P.;A4
【正文语种】:英语
【原文标准名称】:磁放大器芯磁性的标准试验方法
【标准号】:ASTMA598/A598M-2002(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:core;coregain;gainfactor;induction;magneticamplifier;magneticfieldstrength;Amplifierelectronics;Constantcurrentfluxresettestmethod(CCFR);Magneticamplifiercores;Magneticproperties
【摘要】:Themethodofexcitationsimulates,toapracticaldegree,theoperationofamagneticcoreinaself-saturatingmagneticamplifier.Thepropertiesmeasuredarerelatedtothequalityofperformanceofthecoresinmagneticamplifiersandareusefulforthespecificationofmaterialsforsuchcores.1.1Thistestmethodcoversthedeterminationofthemagneticperformanceoffullyprocessedcoresformagneticamplifier-typeapplications.1.2Testsmaybeconductedatexcitationfrequenciesof60,400,1600Hz,orhigherfrequencies.1.3Permissiblecoresizesforthistestmethodarelimitedonlybytheavailablepowersuppliesandtherangeandsensitivityoftheinstrumentation.1.4Atspecifiedvaluesoffull-wavesinusoidal-currentexcitation,Hmax,thistestmethodprovidesproceduresofdeterminingthecorrespondingvalueofmaximuminduction,Bmax.1.5Atspecifiedvaluesofhalf-wavesinusoidal-currentexcitation,thistestmethodprovidesproceduresfordeterminingtheresidualinduction,Br.1.6Atincreasedspecifiedvaluesofhalf-wavesinusoidal-currentexcitation,thistestmethodprovidesproceduresfordeterminingthedcreversebiasingmagneticfieldstrength,H1,requiredtoresettheinductioninthecorematerialpastBrtoavaluewherethetotalinductionchange,x0394;B1,becomesapproximatelyonethirdoftheinductionchange,2Bp.Italsoprovidesproceduresfordeterminingtheadditionaldcresetmagneticfieldstrength,x0394;H,which,combinedwithH1,isthevaluerequiredtoresettheinductioninthecorematerialpastBrtoavaluewherethetotalinductionchange,x0394;B2,becomesapproximatelytwothirdsoftheinductionchange2Bp.1.7Thistestmethodspecifiesproceduresfordeterminingcoregainfromthecorrespondingbiasingandinductionchanges,x0394;Handx0394;B.1.8Thistestmethodcoverstestproceduresandrequirementsforevaluationoffinishedcoreswhicharetobeusedinmagnetic-amplifier-typeapplications.Itisnotatestforbasic-materialmagneticproperties.1.9ThistestmethodshallbeusedinconjunctionwithPracticeA34/A34.1.10Explanationsofsymbolsandabbreviateddefinitionsappearinthetextofthistestmethod.TheofficialsymbolsanddefinitionsarelistedinTerminologyA340.1.11Thevaluesandequationsstatedincustomary(cgs-emuandinch-pound)orSIunitsaretoberegardedseparatelyasstandard.Withinthistestmethod,SIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththistestmethod.1.12Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandard......
【中国标准分类号】:L19
【国际标准分类号】:29_100_10
【页数】:17P.;A4
【正文语种】:英语
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