【英文标准名称】:Bicycletyresandrims-Part1:Tyredesignationsanddimensions
【原文标准名称】:自行车轮胎和轮辋第1部分:轮胎名称和尺寸
【标准号】:ISO5775-1-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-12
【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/TC31
【标准类型】:()
【标准水平】:()
【中文主题词】:轮胎;尺寸;道路车辆;名称与符号;定义;充气轮胎;自行车
【英文主题词】:Cycles;Definitions;Designations;Dimensions;Pneumatictyres;Roadvehicles;Tyres
【摘要】:ThispartofISO5775specifiesthedesignationsanddimensionsforpneumaticbicycletyres:—"wirededge"tyresmountedonstraightsideorcrotchettyperims,and—"beadededge"tyresmountedonhookedbeadrims.Tubularsew-uptyresandnon-pneumatictyresarenotcoveredbythispartofISO5775.
【中国标准分类号】:G41
【国际标准分类号】:83_160_10
【页数】:11P.;A4
【正文语种】:英语


【英文标准名称】:Railwayapplications-Electromagneticcompatibility-Part4:Emissionandimmunityofthesignallingandtelecommunicationsapparatus
【原文标准名称】:铁路设施.电磁兼容性.信号和通信设备的辐射和抗干扰
【标准号】:BSEN50121-4-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-08-31
【实施或试行日期】:2006-08-31
【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】:通信设备;定义;电气工程;电磁兼容性;干扰辐射;极限(数学);工作性能;铁路设施;铁路;信号装置;发信号;通信系统;电信;测试要求;试验
【英文主题词】:Communications;Definition;Definitions;Electricalengineering;Electromagneticcompatibility;EMC;Interferencerejections;Interferingemissions;Limits(mathematics);Performanceinservice;Productstandards;Railwayapplications;Railways;Signaldevices;Signalling;Telecommunicationsystems;Telecommunications;Testingrequirements
【摘要】:ThisEuropeanStandardappliestosignallingandtelecommunicationapparatuswhichisinstalledintherailwayenvironment.SignallingandtelecommunicationapparatusmountedinvehiclesiscoveredbyEN50121-3-2.Thisstandardspecifieslimitsforemissionandimmunityandprovidesperformancecriteriaforsignallingandtelecommunications(S&T)apparatuswhichmayinterferewithotherapparatusintherailwayenvironment,orincreasethetotalemissionsfortherailwayenvironmentbeyondthelimitsdefinedintheappropriatestandardandsoriskcausingElectro-MagneticInterference(EMI)toapparatusoutsidetherailwaysystem.ApparatuswhichcomplieswiththeemissionlevelsofEN61000-6-4willmeettheemissionrequirementsofthisstandardprovidedthatemissionsfromanyd.c.powerportarewithintheemissionslimitsspecifiedfora.c.powerports.TheimmunitylevelsofEN61000-6-2willalsobeadequateexceptforthespecialcaseofapparatusasdefinedinnote1ofTable1.Thisstandardprovidestheimmunityrequirementsforsuchapparatus.Theimmunitylevelsgivenfortheapparatuswillinmostcasesallowtheapparatustoperformasintendedintherailwayenvironment(seenote).Theimmunitylevelestablishesacommonreferenceforevaluatingtheperformanceoftheapparatuswhensubjecttointerferenceresultingfromdirectexposureoftheapparatusandassociatedcablestoaradiofrequencyfield,orbycouplingoftheinterferencefromaremotesource.Ifaportisintendedtotransmitorreceiveforthepurposeofradiocommunication(intentionalradiators.e.g.transpondersystems),thentheemissionandimmunitylimitsinthisstandardatthecommunicationfrequencydonotapply.Thestandarddoesnotspecifybasicpersonalsafetyrequirementsforapparatussuchasprotectionagainstelectricshock,unsafeoperation,insulationco-ordinationandrelateddielectrictests.Therequirementsweredevelopedforandareapplicabletothissetofapparatuswhenoperatingundernormalconditions.Faultconditionsoftheapparatushavenotbeentakenintoaccount.Therequirementsandtestmethodsalsoapplytotelecommunicationsandsignallingdataandpowerlinesconnectedtotheequipmentundertest(EUT).Thefrequencyrangeconsideredisfromd.c.to400GHz.Nomeasurementsneedtobeperformedatfrequencieswherenorequirementisspecified.ForproductsinthescopeofEN61000-3-2orEN61000-3-3,therequirementsofthosestandardsapply.TestingmethodsaregiveninthebasicstandardslistedinClause2,Normativereferences.ThesespecificprovisionsaretobeusedinconjunctionwiththegeneralprovisionsinEN50121-1.NOTETheimmunityandemissionlevelsdonotofthemselvesguaranteethattheintegrationofapparatuswillnecessarilybesatisfactory.Thestandardcannotcoverallthepossibleconfigurationsoftheapparatus,butthetestlevelsaresufficienttoachievesatisfactoryEMCinthemajorityofcases.
【中国标准分类号】:S04;L06
【国际标准分类号】:33_100_01;45_020;93_100;29_280;
【页数】:16P.;A4
【正文语种】:英语