IEC 61779-1-1998 可燃性气体的检测和测量用电气设备第1部分:一般要求和试验方法

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【英文标准名称】:Electricalapparatusforthedetectionandmeasurementofflammablegases-Part1:Generalrequirementsandtestmethods
【原文标准名称】:可燃性气体的检测和测量用电气设备第1部分:一般要求和试验方法
【标准号】:IEC61779-1-1998
【标准状态】:作废
【国别】:国际
【发布日期】:1998-04
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC31L
【标准类型】:()
【标准水平】:()
【中文主题词】:气体燃料;可燃性环境;电驱动装置;测量;气体;试验;试验;试验;试验;电气器具;电气工程;煤气;规范(验收)
【英文主题词】:Electricappliances;Electricalengineering;Electrically-operateddevices;Flammableatmospheres;Fuelgases;Gases;Measurement;Specification(approval);Testing
【摘要】:1ThispartofIEC61779specifiesgeneralrequirementsforconstructionandtestinganddescribesthetestmethodsthatapplytoportable,transportableandfixedapparatusforthedetectionandmeasurementofflammablegasorvapourconcentrationswithair.Theapparatus,orpartsthereof,areintendedforuseinpotentiallyexplosiveatmospheres(see2.1.8)andinminessusceptibletofiredamp.Thisstandardissupplementedbythefollowingstandards,concerningthespecificrequirementsfortheperformanceofthevarioustypesofapparatus:IEC61779-2:PerformancerequirementsforgroupIapparatusindicatinguptoavolumefractionof5%methaneinairIEC61779-3:PerformancerequirementsforgroupIapparatusindicatinguptoavolumefractionof100%methaneinairIEC61779-4:PerformancerequirementsforgroupIIapparatusindicatinguptoavolumefractionof100%lowerexplosivelimitIEC61779-5:PerformancerequirementsforgroupIIapparatusindicatinguptoavolumefractionof100%gasNOTE1-IEC61779-1,inassociationwiththestandardsreferredtoabove,isintendedtoprovideforthesupplyofapparatusgivingalevelofsafetyandperformancesuitableforgeneralpurposeapplications.However,forspecificapplications,aprospectivepurchaser(oranappropriateauthority)mayadditionallyrequiretheapparatustobesubmittedtoparticulartestsorapproval.Forexample,groupIapparatus(i.e.apparatustobeusedinminessusceptibletofiredamp)maynotbepermittedtobeusedwithouttheadditional,priorapprovaloftherelevantauthorityinminesunderitsjurisdiction.Suchparticulartests/approvalaretoberegardedasadditionaltoandseparatefromtheprovisionsofthestandardsreferredtoaboveanddonotprecludecertificationtoorcompliancewiththesestandards.NOTE2-GroupIandgroupIIapparatusindicatinguptoavolumefractionof100%methaneandgroupIIapparatusindicatinguptoavolumefractionof100%gasaresuitableforuseonlywiththespecificgasesforwhichtheyhavebeencalibrated.NOTE3-Forthepurposeofthisstandard,theterms"lowerflammablelimit(LFL)"and"lowerexplosivelimit(LEL)"aredeemedtobesynonymous,andlikewisetheterms"upperflammablelimit(UFL)"and"upperexplosivelimit(UEL)"aredeemedtobesynonymous.Foreaseofreference,thetwoabbreviationsLFLandUFLmaybeusedhereinaftertodenotethesetwosetsofterms.Itshouldberecognizedthatparticularauthoritieshavingjurisdictionmayhaveoverridingrequirementsthatdictatetheuseofoneofthesesetsoftermsandnottheother.2Thisstandardisapplicablewhenanapparatusmanufacturermakesanyclaimsregardinganyspecialfeaturesofconstructionorsuperiorperformancethatexceedtheseminimumrequirements.Allsuchclaimsshallbeverifiedandthetestproceduresshallbeextendedorsupplemented,wherenecessary,toverifytheclaimedperformance.Theadditionaltestsshallbeagreedbetweenthemanufacturerandtestlaboratory.3Thisstandardisapplicabletoflammablegasdetectionapparatusintendedtoprovideanindication,alarmorotheroutputfunction,thepurposeofwhichistogiveawarningofapotentialexplosionhazardand,insomecases,toinitiateautomaticormanualprotectiveaction(s).4Thisstandardisapplicabletoapparatus,includingtheintegralsamplingsystemsofaspiratedapparatus,intendedtobeusedforcommercialandindustrialsafetyapplications.5Thisstandarddoesnotapplytoexternalsamplingsystems,ortoapparatusoflaboratoryorscientifictype,ortoapparatususedonlyforprocesscontrolpurposes.
【中国标准分类号】:N56
【国际标准分类号】:13_320
【页数】:55P;A4
【正文语种】:英语