【英文标准名称】:High-voltageswitchgearandcontrolgear-Part105:Alternatingcurrentswitch-fusecombinations
【原文标准名称】:高压开关设备和控制设备.交流电路开关熔断器组合
【标准号】:BSEN62271-105-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2004-09-02
【实施或试行日期】:2004-09-02
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:ThispartofIEC62271appliestothree-poleunitsforpublicandindustrialdistributionsystemswhicharefunctionalassembliesofswitchesincludingswitch-disconnectorsandcurrent-limitingfusesdesignedsoastobecapableof-breaking,attheratedrecoveryvoltage,anycurrentuptoandincludingtheratedshort-circuitbreakingcurrent,-making,attheratedvoltage,circuitstowhichtheratedshort-circuitbreakingcurrentapplies.Itdoesnotapplytofuse-circuit-breakers,fuse-contactors,combinationsformotor-circuitsortocombinationsincorporatingsinglecapacitorbankswitches.Inthisstandard,theword"combination"isusedforcombinationinwhichthecomponentsconstituteafunctionalassembly.Eachassociationofagiventypeofswitchandagiventypeoffusedefinesonetypeofcombination.Inpractice,differenttypesoffusesmaybecombinedwithonetypeofswitch,whichgivesseveralcombinationswithdifferentcharacteristics,inparticularconcerningtheratedcurrents.Moreover,formaintenancepurposes,theusershouldknowthetypesoffusesthatcanbeassociatedtoagivenswitchwithoutimpairingcompliancetothestandard,andthecorrespondingcharacteristicsoftheso-madecombination.Aswitch-fusecombinationisthendefinedbyitstypedesignationandalistofselectedfusesisdefinedbythemanufacturer,theso-called"referencelistoffuses".Compliancewiththisstandardofagivencombinationmeansthateverycombinationusingoneoftheselectedfusesisproventobeincompliancewiththisstandard.Thefusesareincorporatedinordertoextendtheshort-circuitbreakingratingofthecombinationbeyondthatoftheswitchalone.Theyarefittedwithstrikersinorderbothtoopenautomaticallyallthreepolesoftheswitchontheoperationofafuseandtoachieveacorrectoperationatvaluesoffaultcurrentabovetheminimummeltingcurrentbutbelowtheminimumbreakingcurrentofthefuses.Inadditiontothefusestrikers,thecombinationmaybefittedwitheitheranover-currentreleaseorashuntrelease.NOTEInthisstandardtheterm"fuse"isusedtodesignateeitherthefuseorthefuse-linkwherethegeneralmeaningofthetextdoesnotresultinambiguity.Thisstandardappliestocombinationsdesignedwithratedvoltagesabove1kVuptoandincluding52kVforuseonthree-phasealternatingcurrentsystemsofeither50Hzor60Hz.FusesarecoveredbyIEC60282-1.Switches,includingtheirspecificmechanism,shouldbeinaccordancewithIEC60265-1exceptfortheshort-timecurrentandshort-circuitmakingrequirementswherethecurrent-limitingeffectsofthefusesaretakenintoaccount.EarthingswitchesforminganintegralpartofacombinationarecoveredbyIEC62271-102.
【中国标准分类号】:K43
【国际标准分类号】:29_130_10
【页数】:54P.;A4
【正文语种】:英语


【英文标准名称】:Transportinformationandcontrolsystems-Referencemodelarchitecture(s)fortheTICSsector-Part2:CoreTICSreferencearchitecture
【原文标准名称】:交通信息与控制系统TICS体系框架模型第2部分:芯式TICS参考结构
【标准号】:ISO/TR14813-2-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-12
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC204
【标准类型】:()
【标准水平】:()
【中文主题词】:参考模型;道路运输;运输工具(施工工作);情报系统;交通控制系统;警告装置;信号系统;规范(验收);定义
【英文主题词】:Definition;Definitions;Informationsystems;Referencemodel;Roadtransport;Signalsystems;Specification(approval);Trafficcontrolsystem;Transportfacilities(constructionworks);Warningdevices
【摘要】:Thearchitectureofaninformationandcontrolsystemmergeshardwareandsoftwareconsiderationsintoacoordinatedandintegratedsystemview.Thesystemarchitectureisahighlevelabstraction,ormodel,ofthesystem.Asystemarchitectureshouldembracebothtoday'sapplicationsandtheapplicationsthatareexpectedfnthefuture.Architecturebeginswiththedefinitionoftheconceptualservices(e.g.Part1-TICSfundamentalservices).Thereareseveralidentifiablestagesofsystemarchitecturedevelopment:—1.Referencearchitecture—2.Logicalarchitecture—3.PhysicalarchitectureAreferencearchitectureisthefirstofallarchitectures.Itisaconcisegenericframeworkwhichguidesthedevelopmentofmoreconcretesystemarchitectures.Itislargeenoughthatdistinctconceptsarenotmergedoutofnecessityandsmallenoughthatitdoesnotbecomeunwieldy.AmostsignificantexampleofareferencearchitectureininformationsystemsistheReferenceModelofOpenSystemsInterconnection(oftencalledthesevenlayermodel)developedbyISOinthe1970's.Thismodelhasunderpinnedthedevelopmentofallmoderncomputernetworks,allowingservicessuchasglobalnetworking,ofwhichtheprimeexampleistheInternet,tobecomeareality.Areferencearchitectureisgenericandnon-prescriptiveandcapturestheconceptsofthesystem.Alogicalarchitectureelaboratestheconceptualbehaviour,andinsodoingitprovidesmoredetailaboutthemodularity.Aphysicalarchitectureisreachedwhentheactualdistributionofthesystemmodulesisdefined,thusleadingtoimportantimplicationsforcommunications.Thereisnofirmdemarcationbetweenareferencearchitectureandalogicalarchitecture.Thustheessenceofbehaviourandmodularityispresentinareferencearchitecture.TheTICSReferenceArchitecturedevelopedbyWG1showsimportantinter-relationshipsthatariseintheprovisionoftheservicesofthesector.HowevertheTICSReferenceArchitectureismoreabstractthan,forexample,thelogicalarchitectureoftheUSNationalArchitecture.ItisenvisionedthattheTICSReferenceArchitecturewillbeusedbytheTC204WorkingGroupstodeveloptheirownlogicalandphysicalarchitecturesinacohesivemanner.SomeTICSFundamentalServicesarealreadywelldevelopedbytheindustry,whileothersarelessmature.ThereforetheTICSReferenceArchitecturedoesnothaveauniformgranularityacrossallservices.Thischaracteristicisadirectresultoftheforementionedrequirementthatarchitectureembracetheapplicationsthatareintendedinthefuture.Thissuggestsoneofthewaysinwhichthearchitecturewillundergochangeinthefuture.Architecturesmaypresentonlystaticcharacteristicsorbothstaticanddynamiccharacteristics.Dynamiccharacteristicsmaybeseenasbelongingsolelytothedesign/implementationstagesofsystemdevelopment.Howeverbyincludingdynamiccharacteristicsatthereferencearchitecturestageonegainsimportantinsightsintothestaticarchitecture.Thustwoorthogonalviewsofarchitecturearepresented:—1.staticrelationshipview(classdiagram)—2.dynamicinteractiveview(sequencediagram)ThispartofISO/TR14813developsacorereferencearchitecture.ThestaticscopeisdeterminedbyderivingthesystemboundaryandtheusecasesfromananalysisoftheTICSfundamentalservices(part1ofISO/TR14813).TheCoreReferenceArchitectureisareferenceforthedevelopmentofnationalarchitectures.Part3ofISO/TR14813elaboratesthecorereferencearchitecturebyrefinementoftwoorthogonalviews.TheelaborationcallsupondomainexpertisethatwouldbeprovidedbyotherTC204WorkingGroupsinthedevelopmentofISOstandardsorbynationalgroupsdevelopingnationalarchitecturesandstandards.Thecorereferencearchitectureisdescribedinclauses5to8.Clause5introducesthearchitectureatahighlyabstractl
【中国标准分类号】:R04
【国际标准分类号】:35_240_60
【页数】:66P;A4
【正文语种】:英语