IEEE C57.12.23-2009 沉浸式单相变压器:167kVA及更小、高压25000V及以下、低压600V及以下
时间:2024-05-06 00:41:01 来源: 标准资料网 作者：标准资料网 阅读：8634
【英文标准名称】:SubmersibleSingle-PhaseTransformers:167kVAandSmaller;HighVoltage25000VandBelow;LowVoltage600VandBelow
【原文标准名称】:沉浸式单相变压器:167kVA及更小、高压25000V及以下、低压600V及以下
【标准号】:IEEEC57.12.23-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009-03-19
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(US-IEEE)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thisstandardcoverscertainelectrical,dimensional,andmechanicalcharacteristicsandtakesintoconsiderationcertainsafetyfeaturesofsingle-phase,60Hz,liquid-immersed,self-cooled,submersibledistributiontransformerswithseparableinsulatedhigh-voltageconnectors.Thesetransformersarerated167kVAandsmaller,withhighvoltagesof25000Vandbelowandwithlowvoltagesof600Vandbelow.Thesetransformersaregenerallyusedforstep-downpurposesfromanundergroundprimarycablesupply.Thesetransformersaretypicallyinstalledinanenclosurebelowgroundlevel,operatedfromaboveandsuitableforsubmergedoperation.Thisstandarddoesnotcovertheelectricalandmechanicalrequirementsofanyaccessorydevicesthatmaybesuppliedwiththetransformer.Thisstandardisintendedforuseasabasisfordeterminingperformance,interchangeability,andsafetyoftheequipmentcovered,andtoassistintheproperselectionofsuchequipment.
【中国标准分类号】:K41
【国际标准分类号】:
【页数】:21P.;A4
【正文语种】:英语
【英文标准名称】:Medicalelectricalequipment—CharacteristicsofdigitalX-rayimagingdevices—Part1-3:Determinationofthedetectivequantumefficiency—Detectorsusedindynamicimaging
【原文标准名称】:医疗电气设备.数字X射线成像装置的特性.探测量子效率的测定.动态成像用探测器
【标准号】:BSEN62220-1-3-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2009-04-30
【实施或试行日期】:2009-04-30
【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】:定义;诊断设备;数字的;显示装置;动态的;电气工程;电医学;医疗设备;医疗放射照相术;医疗技术学;量子效率;辐射学;放射器具(医学);放射疗法;规范(验收);X射线图象增强器
【英文主题词】:Definitions;Diagnosticequipment;Digital;Displayunits;Dynamic;Electricalengineering;Electromedicine;Medicalequipment;Medicalradiography;Medicaltechnology;Quantumefficiency;Radiology;Radiologyapparatus(medical);Radiotherapy;Specification(approval);X-rayimageintensifiers
【摘要】:ThispartofIEC62220specifiesthemethodforthedeterminationoftheDETECTIVEQUANTUMEFFICIENCY(DQE)ofDIGITALX-RAYIMAGINGDEVICESasafunctionofAIRKERMAandofSPATIALFREQUENCYfortheworkingconditionsintherangeofthemedicalapplicationasspecifiedbytheMANUFACTURER.TheintendedusersofthispartofIEC62220aremanufacturersandwellequippedtestlaboratories.ThisPart1-3isrestrictedtoDIGITALX-RAYIMAGINGDEVICESthatareusedfordynamicimagingsuchas,butnotexclusively,directandindirectflatpanel-detectorbasedsystems.ItisnotrecommendedtousethispartofIEC62220fordigitalX-RAYIMAGEINTENSIFIER-basedsystems.NOTE1Thisnegativerecommendationisbasedonthelowfrequencydrop,vignettingandgeometricaldistortionpresentinthesedeviceswhichmayputseverelimitationsontheapplicabilityofthemeasurementmethodsdescribedinthisstandard.ThispartofIEC62220isnotapplicableto:–DIGITALX-RAYIMAGINGDEVICESintendedtobeusedinmammographyorindentalradiography;–COMPUTEDTOMOGRAPHY;and–systemsinwhichtheX-rayfieldisscannedacrossthepatient.NOTE2Thedevicesnotedaboveareexcludedbecausetheycontainmanyparameters(forinstance,beamqualities,geometry,timedependence,etc.)whichdifferfromthoseimportantfordynamicimaging.Someofthesetechniquesaretreatedinseparatestandards(IEC62220-1andIEC62220-1-2).
【中国标准分类号】:C43
【国际标准分类号】:11_040_50
【页数】:40P.;A4
【正文语种】:英语
【英文标准名称】:Measurementofairbornenoiseemittedbymachines;envelopingsurfacemethod;processingfurnaces
【原文标准名称】:机器噪声测量.空气载声测量.包面法.工业炉(管式炉)
【标准号】:DIN45635-39-1983
【标准状态】:作废
【国别】:德国
【发布日期】:1983-08
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:测量;声学;包络面法;噪声测量;职业安全;机械工程;炉;噪声;噪声控制;声学测量
【英文主题词】:noise(environmental);mechanicalengineering;acoustics;furnaces;noisemeasurements;envelopingsurfacemethods;occupationalsafety;noisecontrol(acoustic);measurement;acousticmeasurement
【摘要】:
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20
【页数】:4P;A4
【正文语种】:德语