DIN EN 61881-1-2011 铁路设施.铁道车辆设备.电力电子设备用电容器.第1部分:纸/塑料膜电容器(IEC61881-1-2010);德文版本EN61881-1-2011
作者:标准资料网 时间:2024-05-21 01:40:33 浏览:9981
来源:标准资料网
【英文标准名称】:Railwayapplications-Rollingstockequipment-Capacitorsforpowerelectronics-Part1:Paper/plasticfilmcapacitors(IEC61881-1:2010);GermanversionEN61881-1:2011
【原文标准名称】:铁路设施.铁道车辆设备.电力电子设备用电容器.第1部分:纸/塑料膜电容器(IEC61881-1-2010);德文版本EN61881-1-2011
【标准号】:DINEN61881-1-2011
【标准状态】:现行
【国别】:德国
【发布日期】:2011-07
【实施或试行日期】:2011-07-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Alternatingcurrentcapacitors;Capacitors;Condenserunit;Definitions;Directvoltage;Electricrailways;Electricalcomponents;Electricalengineering;Electricalequipment;Electronicequipmentandcomponents;Erection;Inscription;Measurement;Measuringtechniques;Mechanicaltesting;Operatingfrequencies;Operation;Overload;Powercapacitors;Powerelectronics;Qualificationtests;Qualityrequirements;Railwayapplications;Railwayvehicles;Railways;Ratedvoltages;Rollingstocks;Safetyrequirements;Testing;Testingrequirements;Voltagemeasurement
【摘要】:
【中国标准分类号】:
【国际标准分类号】:31_060_70;45_060_01
【页数】:54P.;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforpHofChemicallyCleanedorEtchedConcreteSurfaces
【原文标准名称】:化学清洗或侵蚀混凝土表面pH值的标准试验方法
【标准号】:ASTMD4262-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:试验;PH;覆层;涂料;化学清洗;表面;混凝土;涂漆;核能
【英文主题词】:surfaces;testing;painting;coatings;concretes;ph;paints;nuclearenergy;chemicalcleaning
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:91_080_40
【页数】:2P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforClassificationofComputedRadiologySystems
【原文标准名称】:计算机辐射系统分类的标准实施规程
【标准号】:ASTME2446-2005(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:E07.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:basicspatialresolution.;classification;computedradiology;CR;filmsystemclassification;normalizedSNR;photo-stimulatedluminescence;PSL;Imagequality;Computedradiologysystems;Industrialradiographicfilmprocessing/testing;Phosphor
【摘要】:ThereareseveralfactorsaffectingthequalityofaCRimageincludingthespatialresolutionoftheIPsystem,geometricalunsharpness,scatterandcontrastsensitivity(signal-to-noiseratio),aswellassoftware.Thereareseveraladditionalfactors(forexample,scanningparameters),whichaffecttheaccuratereadingofimagesonexposedIPsusinganopticalscanner.ThispracticeistobeusedtoestablishaclassificationofCRsystemclassesonthebasisofanormalizedSNR.Duetothedifferencebetweenthemethods,itisrequiredtospecifytheCRsystemclasseswithspatialresolutionvalues.TheCRsystemclassesinthisdocumentdonotrefertoanyparticularmanufacturersx2019;imagingplates.ACRsystemclassresultsfromtheuseofaparticularimagingplatetogetherwiththeexposureconditions,particularlytotalexposure,thescannertypeandsoftwareandthescanningparameters.ThisclassificationsystemprovidesameanstocomparedifferingCRtechnologies,asiscommonpracticewithfilmsystems,whichguidestheusertotheappropriateconfiguration,IPandtechniquefortheapplicationathand.Theclassselectedmaynotmatchtheimagingperformanceofacorrespondingfilmclassduetothedifferenceinthespatialresolutionandscattersensitivity.Therefore,thepracticeshouldalwaysuseIQIsforproofofcontrastsensitivityandspatialresolution.Thequalityfactorscanbedeterminedmostaccuratelybythetestsdescribedinthispractice.Someofthesystemtestsrequirespecialtools,whichmaynotbeavailableinuserlaboratories.SimplertestsaredescribedforqualityassuranceinPracticeE2445,whicharedesignedforafasttestofthequalityofCRsystemsandlong-termstabilityandarerecommendedaspracticalusertests,shouldtheusernothavethespecialtoolsavailableasneededforthetestsinthispractice.ManufacturersofindustrialCRsystemswillusethispractice.UsersofindustrialCRsystemsmayalsoperformthetestsandmeasurementsoutlinedinthispractice,providedthattherequiredtestequipmentisusedandthemethodologyisstrictlyfollowed.AnyalternativemethodsmaybeappliedifequivalencetothemethodsofthispracticeisproventotheappropriateCognizantEngineeringOrganization.ThepublicationofCRsystemclasseswillenablespecifyingbodiesandcontractingpartiestoagreetoparticularsystemclass,asafirststepinarrivingattheappropriatesettingsofasystem,ortheselectionofasystem.ConfirmationofnecessaryimagequalityshallbeachievedbyusingPracticeE2033.1.1Thispracticedescribestheevaluationandclassificationofacomputedradiography(CR)system,aparticularphosphorimagingplate(IP),systemscannerandsoftware,incombinationwithspecifiedmetalscreensforindustrialradiography.Itisintendedtoensurethattheevaluationofimagequality,asfarasthisisinfluencedbythescanner/IPsystem,meetstheneedsofusers.1.2Thepracticedefinessystemteststobeusedtoclassifythesystemsofdifferentsuppliersandmakethemcomparableforusers.1.3TheCRsystemperformanceisdescribedbysignalandnoiseparameters.Forfilmsystems,thesignalisrepresentedbygradientandthenoisebygranularity.Thesignal-to-noiseratioisnormalizedbythebasicspatialresolutionofthesystemandispartofclassification.Thenormalizationisgivenbythescanningapertureof100x00B5;mdiameterforthemicro-photometer,whichisdefinedinTestMethodE1815forfilmsystem......
【中国标准分类号】:F80
【国际标准分类号】:19_100
【页数】:10P.;A4
【正文语种】:英语
