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BS EN 60947-7-1-2009 低压开关设备和控制设备.第7-1部分:辅助设备.铜导线用接线端子排

作者:标准资料网 时间:2024-05-15 08:44:52  浏览:9021   来源:标准资料网
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【英文标准名称】:Low-voltageswitchgearandcontrolgear-Part7-1:Ancillaryequipment-Terminalblocksforcopperconductors
【原文标准名称】:低压开关设备和控制设备.第7-1部分:辅助设备.铜导线用接线端子排
【标准号】:BSEN60947-7-1-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-07-31
【实施或试行日期】:2009-07-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:辅助装置;电缆连接件;夹件;结构要求;控制图;铜;铜导线;尺寸规格;电缆线;导电体;电气工程;电气测试;批注;检验;计数检查;极限(数学);低电压;低压开关设备;作标记;产品信息;特性;额定值;规范(验收);开关;开关设备;接线板;测试
【英文主题词】:Auxiliarydevices;Cablejunctions;Clamps;Constructionrequirements;Controlcharts;Copper;Copperconductors;Dimensions;Electriccables;Electricconductors;Electricalengineering;Electricaltesting;Inscription;Inspection;Inspectionbyattributes;Limits(mathematics);Lowvoltage;Low-voltageswitchgear;Marking;Productinformation;Properties;Ratings;Specification(approval);Switches;Switchgear;Terminalblocks;Testing
【摘要】:ThispartofIEC60947specifiesrequirementsforterminalblockswithscrew-typeorscrewless-typeclampingunitsprimarilyintendedforindustrialorsimilaruseandtobefixedtoasupporttoprovideelectricalandmechanicalconnectionbetweencopperconductors.ltappliestoterminalblocksintendedtoconnectroundcopperconductors,withorwithoutspecialpreparation,havingacross-sectionbetween0,2mmand300mm(AWG24/600kcmil),intendedtobeusedincircuitsofaratedvoltagenotexceeding1000Va.c.upto1000Hzor1500Vd.c.Thisstandardmaybeusedasaguidefor?terminalblocksrequiringthefixingofspecialdevicestotheconductors,forexamplequickconnectterminationsorwrappedconnections,etc.;?terminalblocksprovidingdirectcontacttotheconductorsbymeansofedgesorpointspenetratingtheinsulation,forexampleinsulationdisplacementconnections,etc.;?specialtypesofterminalblocks,forexamplewithdiodesorvaristorsorsimilarcomponentholders,etc.Whereapplicableinthisstandard,theterm“clampingunit”hasbeenusedinsteadoftheterm“terminal”.ThisistakenintoaccountincaseofreferencetoIEC60947-1.
【中国标准分类号】:K30
【国际标准分类号】:29_130_20
【页数】:40P.;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforDeterminationofUraniumorPlutoniumIsotopicCompositionorConcentrationbytheTotalEvaporationMethodUsingaThermalIonizationMassSpectrometer
【原文标准名称】:用热电离质谱分光计通过总数蒸发法测定铀或钚同位素组成或浓度的标准试验方法
【标准号】:ASTMC1672-2007
【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】:C26.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:组分;浓缩;测定;蒸发;裂变材料;电离;同位素;质谱学;钚;分光计;测试;热的;铀
【英文主题词】:atompercent;isotopedilutionmassspectrometry;isotopiccomposition;massfractionation;plutonium;thermalionizationmassspectrometry;totalevaporation;uranium;weightpercent
【摘要】:1.1Thismethoddescribesthedeterminationoftheisotopiccompositionand/ortheconcentrationofuraniumandplutoniumasnitratesolutionsbythethermalionizationmassspectrometric(TIMS)totalevaporationmethod.Purifieduraniumorplutoniumnitratesolutionsareloadedontoadegassedmetalfilamentandplacedinthemassspectrometer.Undercomputercontrol,ioncurrentsaregeneratedbyheatingofthefilament(s).Theionbeamsarecontinuallymeasureduntilthesampleisexhausted.Themeasuredioncurrentsareintegratedoverthecourseoftherun,andnormalizedtoareferenceisotopeioncurrenttoyieldisotopicratios.1.2Inprinciple,thetotalevaporationmethodshouldyieldisotopicratiosthatdonotrequiremassbiascorrection.Inpractice,somesamplesmayrequirethisbiascorrection.WhencomparedtotheconventionalTIMSmethod,thetotalevaporationmethodisapproximatelytwotimesfaster,improvesprecisionfromtwotofourfold,andutilizessmallersamplesizes.1.3Thetotalevaporationmethodmayleadtobiasesinminorisotoperatiosduetopeaktailingfromadjacentmajorisotopes,dependingonsamplecharacteristics.Theuseofanelectronmultiplierequippedwithanenergyfiltermayeliminateordiminishpeaktailingeffects.Measurementofinstrumentabundancesensitivitymaybeusedtoensurethatsuchbiasesarenegligible,ormaybeusedtobiascorrectminorisotoperatios.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F46
【国际标准分类号】:27_120_30
【页数】:10P.;A4
【正文语种】:


【英文标准名称】:TestMethodforDeterminingInitialFractionalFiltrationEfficiencyofaVacuumCleanerSystem
【原文标准名称】:测定真空吸尘器系统初始部分过滤效率的试验方法
【标准号】:ANSI/ASTMF1977-2004
【标准状态】:现行
【国别】:美国
【发布日期】:2004-03-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;真空吸尘设备;家用设备;给养设备;过滤器
【英文主题词】:Cateringequipment;Efficiency;Filters;Filtration;Householdequipment;Testing;Vacuumcleaners;Vacuumcleaningequipment
【摘要】:Thistestmethodmaybeusedtodeterminetheinitial,fractional,filtrationefficiencyofhouseholdandcommercialcanister(tank-type),stick,hand-held,upright,andutilityvacuumcleanersystems.1.1.1Water-filtrationvacuumcleanerswhichdonotutilitzeareplaceabledrymediafilterlocatedbetweenthewater-basedfilterandcleaningairexhaustarenotincludedinthistestmethod.Ithasbeendeterminedthattheexhaustofthesevacuumcleanersisnotcompatiblewiththespecifieddiscreteparticlecounter(DPC)procedure.Theinitial,fractional,filtrationefficienciesoftheentirevacuumcleanersystem,atfourdiscreteparticlesizes(0.3,0.5,1.0and2.5?m),isderivedbycountingupstreamchallengeparticlesandtheconstituentofdownstreamparticleswhilethevacuumcleanersystemisbeingoperatedinastationarytestcondition.Thevacuumcleanersystemistestedatthenozzleunderanormalairflowrateequivalentto150%oftheairflowrateproducedatthemaximumairpowerpointasdeterminedinaccordancewithTestMethodF558.Thevacuumcleanersystemistestedwithanewfilter(s)installed,andwithnopreliminarydustloading.Thefractionalefficienciesdeterminedbythistestmethodshallbeconsideredinitialsystemfiltrationefficiencies.Neutralizedpotassiumchloride(KCl)isusedasthechallengemediainthistestmethod.Oneortwoparticlecountersmaybeusedtosatisfytherequirementsofthistestmethod.Bothrequireflowcontrolmeanstoswitchbetweensamplingtheupstreamanddownstreamairsamplingprobes.Toefficientlyutilizethistestmethod,automatedtestequipmentandcomputerautomationisrecommended.Differentsamplingparameters,flowrates,andsoforth,forthespecificapplicationsoftheequipmentandtestproceduremayprovideequivalentresults.Itisbeyondthescopeofthistestmethodtodefinethosevariouspossibilities.Thistestmethodislimitedtothetestapparatus,oritsequivalent,asdescribedinthisdocument.Thistestmethodisnotintendedordesignedtoprovideanymeasureofthehealtheffectsormedicalaspectsofvacuumcleaning.ThistestmethodisnotintendedordesignedtodeterminetheintegrityofHEPAfiltrationassembliesusedinvacuumcleanersystemsemployedinnuclearanddefensefacilities.Theinch-poundsystemofunitsisusedinthistestmethod,exceptforthecommonusageofthemicrometer,?m,forthedescriptionofparticlesizewhichisaSIunit.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P48
【国际标准分类号】:97_080
【页数】:
【正文语种】:英语



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