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【英文标准名称】:StandardTestMethodforEvaluationoftheEffectofNanoparticulateMaterialsontheFormationofMouseGranulocyte-MacrophageColonies
【原文标准名称】:评定纳米粒子材料对老鼠粒细胞巨噬细胞集落形成影响的标准试验方法
【标准号】:ASTME2525-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:影响;评定;形成;医学科学;微生物学;定量分析;测试
【英文主题词】:Effect;Evaluations;Formations;Medicalsciences;Microbiology;Quantitativeanalysis;Testing
【摘要】:
【中国标准分类号】:
【国际标准分类号】:07_100_10
【页数】:5P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodsforMeasurementofEnergyandIntegratedChargeTransferDuetoPartialDischarges(Corona)UsingBridgeTechniques
【原文标准名称】:用电桥技术测量局部放电(电晕)引起的能量和总电荷转移的标准试验方法
【标准号】:ASTMD3382-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D09.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:放电;电气工程;电气保护设备;电气测试;能量;供能系统(建筑物);使充满;测量;传输
【英文主题词】:bridgecircuits;bridgetechniques;capacitanceincrease;charge-voltage-tracebridge;corona;dischargeenergy;dischargeinceptionlevel;energy;harmonics;integratedchargetransfer;internaldischarges;ionizingvoltage;looptrace;partia
【摘要】:Thesetestmethodsareusefulinresearchandqualitycontrolforevaluatinginsulatingmaterialsandsystemssincetheyprovideforthemeasurementofchargetransferandenergylossduetopartialdischarges(4)(5)(6).Pulsemeasurementsofpartialdischargesindicatethemagnitudeofindividualdischarges.However,iftherearenumerousdischargespercycleitmaybeimportanttoknowtheirchargesum,sincethissumcanberelatedtothetotalvolumeofinternalgasspacesthataredischarging,ifitisassumedthatthegascavitiesaresimplecapacitancesinserieswiththecapacitancesofthesoliddielectrics(7)(8).Internal(cavity-type)dischargesaremainlyofthepulse(spark-type)withrapidrisetimesorthepseudoglow-typewithlongrisetimes,dependinguponthedischargegoverningparametersexistingwithinthecavity.Iftherisetimesofthepseudoglowdischargesaretoolong,theywillevadedetectionbypulsedetectorsascoveredinTestMethodD1868.However,boththepseudoglowdischargesirrespectiveofthelengthoftheirrisetimeaswellaspulselessglowcanbereadilymeasuredeitherbyMethodAorBofTestMethodsD3382.Pseudoglowdischargeshavebeenobservedtooccurinair,particularlywhenapartiallyconductingsurfaceisinvolved.Suchpartiallyconductingsurfacesmaydevelopwithpolymersthatareexposedtopartialdischargesforsufficientlylongperiodstoaccumulateacidicdegradationproducts.Alsoinsomeapplications,liketurbogenerators,wherealowmolecularweightgassuchashydrogenisusedasacoolant,pseudoglowdischargesmaydevelop.1.1Thesetestmethodscovertwobridgetechniquesformeasuringtheenergyandintegratedchargeofpulseandpseudoglowpartialdischarges:1.2TestMethodAmakesuseofcapacitanceandlosscharacteristicssuchasmeasuredbythetransformerratio-armbridgeorthehigh-voltageScheringbridge(TestMethodsD150).TestMethodAcanbeusedtoobtaintheintegratedchargetransferandenergylossduetopartialdischargesinadielectricfromthemeasuredincreaseincapacitanceandtanwithvoltage.(SeealsoIEEE286andIEEE1434)1.3TestMethodBmakesuseofasomewhatdifferentbridgecircuit,identifiedasacharge-voltage-trace(parallelogram)technique,whichindicatesdirectlyonanoscilloscopetheintegratedchargetransferandthemagnitudeoftheenergylossduetopartialdischarges.1.4Bothtestmethodsareintendedtosupplementthemeasurementanddetectionofpulse-typepartialdischargesascoveredbyTestMethodD1868,bymeasuringthesumofbothpulseandpseudoglowdischargespercycleintermsoftheirchargeandenergy.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionstatementsaregiveninSection7.
【中国标准分类号】:A55
【国际标准分类号】:17_220_20
【页数】:8P.;A4
【正文语种】: