ANSI INCITS334-2000 信息技术.信息交换用盒式磁带.0.50in(12.65mm)串行螺旋128磁道62500BPI(2460BPMM)DLT3-X格式

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【英文标准名称】:MagneticTapeCartridgeforInformationInterchange,0.50in(12.65mm)SerialSerpentine128-Track,62500bpi(2460bpmm)DLT3XTFormat
【原文标准名称】:信息技术.信息交换用盒式磁带.0.50in(12.65mm)串行螺旋128磁道62500BPI(2460BPMM)DLT3-X格式
【标准号】:ANSIINCITS334-2000
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【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】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:(胶片)盒;数据存储;交换;信息交换;信息技术;磁带技术;磁带;串行;窄条带材;导轨
【英文主题词】:Cartridges;Datastorage;Exchange;Informationinterchange;Informationtechnology;Magnetictapetechniques;Magnetictapes;Serial;Tape;Tracks
【摘要】:Specifiesthephysicalandmagneticcharacteristicsofa0.5-in(12.65-mm)-wide128-trackmagnetictapecartridge,toenablephysicalinterchangeofsuchcartridges.Italsospecifiesthequalityoftherecordedsignals,aformat-calledDigitalLinearTape3Extended(DLT3-XT)-andarecordingmethod,therebyallowingdatainterchangebetweendrives.TheuseofalabelingstandardsuchasAmericanNationalStandardforInformationTechnology-FileStructureandLabellingofMagneticTapesforInformationInterchange,ANSIX3.27-1987(R1998),willsupportdatainterchangebetweendataprocessingsystems.
【中国标准分类号】:L64
【国际标准分类号】:35_220_22
【页数】:
【正文语种】:英语

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【英文标准名称】:ULStandardforSafetyPowerConverters/InvertersandPowerConverter/InverterSystemsforLandVehiclesandMarineCraftsCOMMENTSDUE:NOVEMBER19,2007
【原文标准名称】:UL安全标准.陆地车辆和船只用功率变流器和功率变流器系统.评议提交截止日期:2007年11月19日
【标准号】:UL458BULLETIN-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Theserequirementscoverfixedandstationarypowerconverters,power-convertersystems,andaccessorieshavingaratednominalinputof120,120/240,or240V,alternatingcurrentandanominaloutputof24Vorless,directcurrent.Theseconvertersareintendedforusewithinlandvehicleswherenotdirectlyexposedtooutdoorconditions,andareintendedtobeemployedinaccordancewiththeNationalElectricalCode,NFPA70.Theserequirementsalsocoverfixed,stationaryandportablepowerinvertersandpower-invertersystemshavingadcinputanda120or240Vacoutput.Theseinvertersareintendedforusewithinlandvehicleswherenotdirectlyexposedtooutdoorconditions,andareintendedtobeemployedinaccordancewiththeNationalElectricalCode,NFPA70.Theserequirementsalsocoverconverters/invertersthatareadditionallyintendedtochargebatteries.PowerconverterscoveredbyPartiofthisstandardareintendedforconnectiontoestablished15-and20-Abranchcircuitswithinarecreationalvehicle.Power-inverterscoveredbyPartiofthisstandardareintendedforconnectiontoa12-or24-Vdcbatterysupply.Convertersandinvertersincorporatingprovisionsfortheconnectionoflessthanthreeline-voltagebranchcircuitsareinvestigatedundertherequirementsinPartiofthisstandard.Apower-converterorpower-invertersystemisintendedfordirectconnectiontoapower-supplyassembly.Asystemforconnectionofthreeorlessline-voltagebranchcircuits,notincludingthemaindisconnect,mayoptionallybeevaluatedinaccordancewiththerequirementsinPartiiofthisstandard,orwiththeapplicablerequirementsforaClassCTLpanelboardintheStandardforPanelboards,UL67.Powerconvertersystemsandpowerinvertersystemsalsoemploycircuitryasdescribedin1.4and1.5.Apower-converterorpower-invertersystemprovidedwithmorethanthreeline-voltagebranchcircuits,notincludingthemaindisconnect,isinvestigatedtotheapplicablerequirementsforaClassCTLpanelboardintheStandardforPanelboards,UL67.Convertersandinvertersincorporatingprovisionsfortheconnectionofmorethanthreeline-voltagebranchcircuitsarejudgedundertherequirementsinPartiofthisstandardandtheapplicablerequirementsforaClassCTLpanelboardinaccordancewiththeStandardforPanelboards,UL67.Eachpoleofamultiple-polecircuitbreakerisaseparatecircuit.
【中国标准分类号】:K41
【国际标准分类号】:29_200
【页数】:
【正文语种】:英语