DIN EN 61747-1-2000 液晶和固态显示器件.第1部分:总规范
作者:标准资料网 时间:2024-05-24 00:49:52 浏览:8324
来源:标准资料网
【英文标准名称】:Liquidcrystalandsolid-statedisplaydevices-Part1:Genericspecification(IEC61747-1:1998);GermanversionEN61747-1:1999
【原文标准名称】:液晶和固态显示器件.第1部分:总规范
【标准号】:DINEN61747-1-2000
【标准状态】:作废
【国别】:德国
【发布日期】:2000-02
【实施或试行日期】:2000-02-01
【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】:质量评定;设计认证;总规范;液晶显示;液晶显示;液晶;组件;电子设备及元件;测量技术;指示;试验;质量保证;半导体器件;电子工程;电气工程;检验;作标记;定义;定义
【英文主题词】:
【摘要】:
【中国标准分类号】:L47
【国际标准分类号】:31_120
【页数】:23P;A4
【正文语种】:德语
Product Code:SAE AS5198
Title:Fitting, Tee, Flared to Pipe on Run
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:No scope available.【英文标准名称】:Industrialfans-Specificationsforbalancequalityandvibrationlevels
【原文标准名称】:工业风机.平衡质量和振动等级规范
【标准号】:ISO14694-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-03
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC117
【标准类型】:()
【标准水平】:()
【中文主题词】:振动效应;定义;影响;平衡;通风机;振动;振动强度
【英文主题词】:Balancequality;Balancing;Definitions;Ventilators;Vibration;Vibrationeffects;Vibrationintensity
【摘要】:ThisInternationalStandardgivesspecificationsforvibrationandbalancelimitsoffansforallapplicationsexceptthosedesignedsolelyforaircirculation,forexample,ceilingfansandtablefans.However,itislimitedtofansofalltypesinstalledwithapoweroflessthan300kWortoacommerciallyavailablestandardelectricmotorwithamaximumpowerof355kW(followinganR20series).Forfansofgreaterpowerthanthis,theapplicablelimitsarethosegiveninISO10816-3.Wherethefansinaninstallationhavevaryingpowersbothaboveandbelow300kW,andhavebeenthesubjectofasinglecontract,thenthemanufacturerandpurchasershallagreeontheappropriatestandardtobeused.Thisshouldnormallybebasedonthemajorityofunits.VibrationdatamayberequiredforavarietyofpurposesasdetailedinClause5.TheInternationalStandardrecognizesthatvibrationalmeasurementsmayberecordedasvelocity,accelerationordisplacementeitherinabsoluteunitsorindecibelsaboveagivenreferencelevel.Themagnitudeofvibrationmeasurementsmaybeaffectedbyassemblypracticesatbalancingmachines(seeAnnexB).Thepreferredparameteris,however,thevelocity,inmillimeterspersecond(mm/s).Astheconventionsvaryindifferentpartsoftheworld,bothr.m.s.(rootmeansquare)andpeak-to-peakorpeakvaluesaregiven.Itshouldalsoberememberedthatafananditspartsmaybeconsideredasaspring-masssystem.Anunderstandingofthisfacthelpstoresolvemostvibrationalproblems(seeAnnexD).Accounthasalsobeentakenofthefactthatfactorytestsareusuallyconductedwiththefanunconnectedtoaductingsystem,suchthatitsaerodynamicdutymaybeconsiderablydifferentfromthatduringnormaloperation.Itmayalsobesupportedontemporaryfoundationsofdifferentmassandstiffnesstothoseusedinsitu.Accordingly,suchtestsarespecifiedwithvibrationmeasured"filter-in".Insitutestsarespecified"filter-out"andassuchrepresentameasureofoverallvibrationseverity.ThisInternationalStandardcoversfanequipmentwithrigidrotors,generallyfoundin:commercialheating,ventilatingandairconditioning,industrialprocesses,mine/tunnelventilationandpower-generationapplications.Otherapplicationsarenotspecificallyexcluded.Excludedareinstallationswhichinvolvesevereforces,impactsorextremetemperatures.AnyorallportionsofthisInternationalStandard,ormodificationsthereof,aresubjecttoagreementbetweenthepartiesconcerned.Fan-equipmentfoundationsandinstallationpracticesarebeyondthescopeofthisInternationalStandard.Foundationdesignandfaninstallationarenotnormallytheresponsibilitiesofthefanmanufacturer.Itisfullyexpectedthatthefoundationsuponwhichthefanismountedwillprovidethesupportandstabilitynecessarytomeetthevibrationcriteriaofthefanasitisdeliveredfromthefactory.Otherfactors,suchasimpellercleanliness,aerodynamicconditions,backgroundvibration,operationatspeedsotherthanthoseagreedupon,andmaintenanceofthefan,affectthefan-vibrationlevelsbutarebeyondthescopeofthisInternationalStandard.ThisInternationalStandardisintendedtocoveronlythebalanceorvibrationofthefananddoesnottakeintoaccounttheeffectoffanvibrationonpersonnel,equipmentorprocesses.
【中国标准分类号】:J72
【国际标准分类号】:17_160;23_120
【页数】:39P.;A4
【正文语种】:英语
