【英文标准名称】:StandardTestMethodforAlternatingCurrentMagneticPropertiesofLaminatedCoreSpecimenUsingVoltmeter-Ammeter-WattmeterMethods
【原文标准名称】:伏特计-安培计-瓦特计测定叠层铁芯样品交流电磁特性的标准试验方法
【标准号】:ASTMA697/A697M-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:alternating-current;core;coreloss;flat-rolled;induction;laminatedcore;lamination;magnetic;magneticmaterial;magnetictest;permeability;transformer;A-C(alternating-current)magneticproperties;Alternating-currentpermeability;Comm
【摘要】:Thistestmethodwasdevelopedforevaluatingtheacmagneticpropertiesoflaminatedcoresmadefromflat-rolledmagneticmaterials.Thereproducibilityandrepeatabilityofthistestmethodaresuchthatthistestmethodissuitablefordesign,specificationacceptance,serviceevaluation,andresearchanddevelopment.1.1Thistestmethodcoversthedeterminationofseveralacmagneticpropertiesoflaminatedcoresmadefromflat-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.Itdependsuponthesedesignateddocumentsandarelatedreferencetestmanualfordetailedinformationwhichwillnotberepeatedinthistestmethod.1.8Thevaluesandequationsstatedincustomary(cgs-emuandinch-pound)orSIunitsaretoberegardedseparatelyasstandard.Withinthisstandard,SIunitsareshowninbrackets.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththisstandard.1.9Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H21
【国际标准分类号】:29_100_10
【页数】:11P.;A4
【正文语种】:英语


【英文标准名称】:Fibreopticconnectorinterfaces-Part7:TypeMPOconnectorfamily
【原文标准名称】:光纤连接器接口.第7部分:MPO型连接器系列
【标准号】:IEC61754-7-1996
【标准状态】:作废
【国别】:国际
【发布日期】:1996-12
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC86B
【标准类型】:()
【标准水平】:()
【中文主题词】:连接工艺;电气工程;指导手册;纤维光学;连接器;光波导
【英文主题词】:opticalwaveguides;fibreoptics;guidebooks;connectiontechnology;connectors;electricalengineering
【摘要】:
【中国标准分类号】:M33;L23
【国际标准分类号】:33_180_20
【页数】:15P;A4
【正文语种】:英语