BS EN 60076-5-2001 电力变压器.耐短路性
时间:2024-05-12 06:14:29 来源: 标准资料网 作者：标准资料网 阅读：8049
【英文标准名称】:Powertransformers-Abilitytowithstandshortcircuit
【原文标准名称】:电力变压器.耐短路性
【标准号】:BSEN60076-5-2001
【标准状态】:作废
【国别】:英国
【发布日期】:2001-03-15
【实施或试行日期】:2001-03-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:过电流;短路电流试验;电力变压器;短路电流;电故障;温升;电气试验;电气设备;变压器;数学计算
【英文主题词】:
【摘要】:ThispartofIEC60076identifiestherequirementsforpowertransformerstosustainwithoutdamagetheeffectsofovercurrentsoriginatedbyexternalshortcircuits.Itdescribesthecalculationproceduresusedtodemonstratethethermalabilityofapowertransformertowithstandsuchovercurrentsandboththespecialtestandthecalculationmethodusedtodemonstrateitsabilitytowithstandtherelevantdynamiceffects.TherequirementsapplytotransformersasdefinedinthescopeofIEC60076-1.
【中国标准分类号】:K41
【国际标准分类号】:29_180
【页数】:26P;A4
【正文语种】:英语
【英文标准名称】:Fibreopticinterconnectingdevicesandpassivecomponents-Adaptorsforfibreopticconnectors-Part1-1:Blankdetailspecification
【原文标准名称】:光导纤维转接设备和无源部件.光导纤维和电缆连接器.第1-1部分:空白详细规范
【标准号】:IEC61274-1-1-2011
【标准状态】:现行
【国别】:国际
【发布日期】:2011-11
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC86B
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Adapters;Blankforms;Cables;Clutches;Conformity;Connectoredjoints;Detailspecification;Electricplugs;Electricalengineering;Environmentalaspects;Environmentalconditions;Fasteners;Fibreoptics;Genericspecification;Glassfibrecables;Inspection;Intermediateconnectors;Opticalwaveguides;Quality;Qualityassessment;Qualityassurance;Radiofrequencyconnectors;Specification
【摘要】:
【中国标准分类号】:M33
【国际标准分类号】:33_180_20
【页数】:24P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforNon-DestructiveAssayofNuclearMaterialinWastebyPassiveandActiveNeutronCountingUsingaDifferentialDie-AwaySystem
【原文标准名称】:用差动衰减系统钝化-活化中子计数法对废物中的核物质进行无损分析的标准试验方法
【标准号】:ASTMC1493-2001
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:C26.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:non-destructiveassay;nuclearmaterialsinwaste;passiveandactiveneutroncounting;differentialdie-awaysystem;uranium;plutonium
【摘要】:1.1Thistestmethodcoversasystemthatperformsnondestructiveassay(NDA)ofuraniumorplutonium,orboth,usingtheactive,differentialdie-awaytechnique(DDT),andpassiveneutroncoincidencecounting.Resultsfromtheactiveandpassivemeasurementsarecombinedtodeterminethetotalamountoffissileandspontaneously-fissioningmaterialindrumsofscraporwasteaslargeas208L.Correctionsaremadetothemeasurementsfortheeffectsofneutronmoderationandabsorption,assumingthattheeffectsareaveragedoverthevolumeofthedrumandthatnosignificantlumpsofnuclearmaterialarepresent.Thesesystemsaremostwidelyusedtoassaylow-levelandtransuranicwaste,butmayalsobeusedforthemeasurementofscrapmaterials.Whilethistestmethodisspecifictothesecond-generationLosAlamosNationalLaboratory(LANL)passive-activeneutronassaysystem,theprincipleappliestootherDDTsystems.1.1.1Intheactivemode,thesystemmeasuresfissileisotopessuchas235Uand239Pu.Theneutronsfromapulsed,14-MeVneutrongeneratorarethermalizedtoinducefissionintheassayitem.Betweengeneratorpulses,thesystemdetectsprompt-fissionneutronsemittedfromthefissilematerial.Thenumberofdetectedneutronsbetweenpulsesisproportionaltothemassoffissilematerial.Thismethodiscalledthedifferentialdie-awaytechnique.1.1.2Inthepassivemode,thesystemdetectstime-coincidentneutronsemittedfromspontaneouslyfissioningisotopes.Theprimaryisotopesmeasuredare238Pu,240Pu,and242Pu;however,thesystemmaybeadaptedforuseonotherspontaneously-fissioningisotopesaswell.Thenumberofcoincidentneutronsdetectedisproportionaltothemassofspontaneously-fissioningmaterial.1.2Theactivemodeisusedtoassayfissilematerialinthefollowingranges.1.2.1Foruranium-bearingitems,theDDTcanmeasurethe235Ucontentintherangefrom0.02toover100g.Normally,theassayofitemsbearingonlyuraniumisperformedusingmatrix-specificcalibrationstoaccountfortheeffectofthematrixontheactivesignal.1.2.2Forplutonium-bearingitems,theDDTmethodmeasuresthe239Pucontentintherangebetween0.01and20g.1.3Thepassivemodeiscapableofassayingspontaneously-fissioningnuclei,overanominalrangefrom0.05to15gof240Pu,orequivalent.Thepassivemodecanalsobeusedtomeasurelarge(forexample,kg)quantitiesof238U.1.4Thistestmethodrequiresknowledgeoftherelativeabundancesoftheplutoniumoruraniumisotopestodeterminethetotalplutoniumoruraniummass.1.5Thistestmethodwillgivebiasedresultswhenthewasteformdoesnotmeetthecalibrationspecificationsandthemeasurementassumptionspresentedinthistestmethodregardingtherequirementsforahomogeneousmatrix,uniformsourcedistribution,andtheabsenceofnuclearmateriallumps,totheextentthattheyeffectthemeasurement.1.6Thecompleteactiveandpassiveassayofa208Ldrumisnominally10minorless.1.7Improvementstothistestmethodhavebeenreported(1,2,3,4).Discussionsoftheseimprovementsarenotincludedinthistestmethod.1.8Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8.
【中国标准分类号】:F40
【国际标准分类号】:27_120_30
【页数】:15P.;A4
【正文语种】: