【英文标准名称】:Roadtrafficnoisereducingdevices-Testmethodfordeterminingtheacousticperformance-Part1:Intrinsiccharacteristicsofsoundabsorption;GermanversionEN1793-1:1997
【原文标准名称】:道路交通降噪设备.测定听觉功能的试验方法.第1部分:声音吸收的固有特性
【标准号】:EN1793-1-1997
【标准状态】:现行
【国别】:
【发布日期】:1997-11
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:噪声保护设备;噪声保护壁;吸声;声学测量;试验;声源;道路;声学;测量;建筑;定义;交通噪声;测量方法;噪声控制;声能;建筑声学;实验室试验;噪声控制装置;特性;特性;吸声系数;测量技术;噪声降低;声音吸收;声学性质和声学现象
【英文主题词】:Acousticabsorption;Acousticmeasurement;Acousticpropertiesandphenomena;Acoustics;Buildingacoustics;Characteristics;Construction;Definition;Definitions;Laboratorytesting;Measurement;Measuringtechniques;Methodsformeasuring;Noisecontrol;Noisecontroldevices;Noiseprotectiondevices;Noiseprotectionwalls;Noisereduction;Properties;Roads;Soundabsorption;Soundabsorptioncoefficient;Soundenergy;Soundsources;Testing;Trafficnoise
【摘要】:
【中国标准分类号】:T13
【国际标准分类号】:17_140_30;93_080_30
【页数】:6P.;A4
【正文语种】:英语


【英文标准名称】:Safetyofinformationtechnologyequipment
【原文标准名称】:信息技术设备的安全
【标准号】:UL60950-2000
【标准状态】:作废
【国别】:美国
【发布日期】:2000-12-11
【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】:安全;信息技术;远程通信;电信;危险防护;办公室设备;通信;伤害危险;计算机;防电击;防火安全;电驱动装置
【英文主题词】:Computers;Electrically-operateddevices;Firesafety;Hazardtoinjuries;Informationtechnology;Officeequipment;Protectionagainstdanger;Protectionagainstelectricshocks;Safety;Telecommunication
【摘要】:Thisstandardisapplicabletomains-poweredorbattery-poweredinformationtechnologyequipment,includingelectricalbusinessequipmentandassociatedequipment,witharatedvoltagenotexceeding600VanddesignedtobeinstalledinaccordancewiththeCanadianElectricalCode,PartI,CSAC22.1;CSAC22.2No.0;andtheNationalElectricalCode,NFPA70.Thestandardisalsoapplicabletoequipment,unlessotherwiseidentifiedbyamarkingorinstructions,designedtobeinstalledinaccordancewithArticle645oftheNationalElectricalCode,NFPA70,andtheStandardfortheProtectionofElectronicComputerData-ProcessingEquipment,NFPA75.ThisstandardisalsoapplicabletosuchinformationtechnologyequipmentdesignedandintendedtobeconnecteddirectlytoaTelecommunicationNetwork,regardlessofthesourceofpower.ItisalsoapplicabletosuchinformationtechnologyequipmentdesignedtousetheACmainssupplyasatelecommunicationtransmissionmedium.Thisstandardspecifiesrequirementsintendedtoreducerisksoffire,electricshockorinjuryfortheoperatorandlaymanwhomaycomeintocontactwiththeequipmentand,wherespecificallystated,forservicepersonnel.Thisstandardisintendedtoreducesuchriskswithrespecttoinstalledequipment,whetheritconsistsofasystemofinterconnectedunitsorindependentunits,subjecttoinstalling,operatingandmaintainingtheequipmentinthemannerprescribedbythemanufacturer.Examplesofequipmentcoveredinthescopeofthisstandardare:accountingmachines,bookkeepingmachines,calculators,cashregisters,copyingmachines,datacircuitterminatingequipment,datapreparationequipment,dataprocessingequipment,dataterminalequipment,dictationequipment,documentshreddingmachines,duplicators,electricallyoperateddrawingmachines,erasers,facsimileequipment,keytelephonesystems,magnetictapehandlers,mailprocessingmachines,micrographicofficeequipment,modems,monetaryprocessingmachineincludingautomatedteller(cashdispensing)machines,motor-operatedfiles,PABX=s,paperjoggingmachines,papertrimmers,(punchers,cuttingmachines,separators),pencilsharpeners,personalcomputers,photoprintingequipment,plotters,pointofsaleterminalsincludingassociatedelectronicscales,postagemachines,publicinformationterminals,staplers,telephoneansweringmachines,telephonesets,textprocessingequipment,typewriters,andvisualdisplayunits.Thislistisnotintendedtobecomprehensive,andequipmentthatisnotlistedisnotnecessarilyexcludedfromthescope.Equipmentcomplyingwiththerelevantrequirementsinthisstandardisconsideredsuitableforusewithprocesscontrolequipment,automatictestequipment,andsimilarsystemsrequiringinformationprocessingfacilities.However,thisstandarddoesnotincluderequirementsforperformanceorfunctionalcharacteristicsofequipment.Requirementsadditionaltothosespecifiedinthisstandardmaybenecessaryfor:Equipmentintendedforoperationinspecialenvironments,forexample,extremesoftemperature;excessivedust,moistureorvibration;flammablegases;andcorrosiveorexplosiveatmospheres;Electromedicalapplicationswithphysicalconnectionstothepatient;Equipmentintendedtobeusedinvehicles,onboardshipsoraircraft,intropicalcountries,orataltitudesgreaterthan2000m;Equipmentintendedforusewhereingressofwaterispossible;forguidanceonsuchrequirementsandonrelevanttesting.Thisstandarddoesnotapplyto:Supportequipment,suchasairconditioning,firedetectionorfireextinguishingsystems;Powersupplysystems,suchasmotor-generatorsets,batterybackupsystemsandtransformers,whicharenotanintegralpartoftheequipment;Buildinginstallationwiring;Devicesrequiringnoelectricalpower.[seee-mailfor30-daytextchanges]
【中国标准分类号】:L09
【国际标准分类号】:35_020;35_260
【页数】:446P.;A4
【正文语种】:英语