【英文标准名称】:Aluminiumoxideprimarilyusedfortheproductionofaluminium;Determinationofcalciumcontent;Naphthalhydroxamicacidspectrophotometricmethod
【原文标准名称】:金属铝生产用氧化铝.钙含量的测定.萘亚甲基异羟肟酸分光光度法
【标准号】:ISO2070-1981
【标准状态】:作废
【国别】:国际
【发布日期】:1981-08
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析;分光光度法;萘亚甲基异羟肟酸;分光光度测量分析;钙;氧化铝;含量测定;化学分析和试验;生产;铝
【英文主题词】:chemicalanalysis;naphthalhydroxamicacid;production;aluminium;calcium;aluminiumoxide;spectrophotometry;spectrophotometricanalysis;determinationofcontent;chemicalanalysisandtesting
【摘要】:
【中国标准分类号】:G10
【国际标准分类号】:5603;5590;0520
【页数】:4P;A4
【正文语种】:英语


【英文标准名称】:Electricalapparatusforuseinthepresenceofcombustibledust-Part4:Typeofprotection"pD"
【原文标准名称】:有可燃性粉尘场所用电气设备第4部分：防护类型“pD”
【标准号】:IEC61241-4-2001
【标准状态】:现行
【国别】:国际
【发布日期】:2001-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC31H
【标准类型】:()
【标准水平】:()
【中文主题词】:灰尘暴炸;分类系统;防爆;电气器具;电气工程;定义;试验
【英文主题词】:Air;Burninggases;Capsules;Classificationsystems;Combustible;Definitions;Degreesofprotection;Dust;Dustexplosions;Electricappliances;Electricenclosures;Electricalengineering;Electricalequipment;Electrically-operateddevices;Enclosure;Enclosures;Equipment;Explosionprotection;Explosions;Explosiveatmospheres;Flammableatmospheres;Gases;Ignition;Ignitionprotection;Inertgases;Marking;Materials;Methods;Openings;Pressure;Pressureoverload;Pressurizing;Protectivegases;Safety;Safetyprovisions;Structuring;Supply;Temperature;Temperature-riselimit;Testing;Typeofprotection;TypepDprotectedelectricalequipment;Verification;Warningsigns
【摘要】:ThispartofIEC61241,givesrequirementsonthedesign,construction,testingandmarkingofelectricalapparatusforuseincombustibledustatmospheresinwhichaprotectivegas(airorinertgas),maintainedatapressureabovethatoftheexternalatmosphere,isusedtopreventtheentryofdustwhichmightotherwiseleadtotheformationofacombustiblemixturewithinenclosureswhichdonotcontainasourceofcombustibledust.Thisstandardcontainsthespecificrequirementsforconstructionandtesting,includingprotectiverequirementsthatapplytoelectricalapparatuswithtypeofprotectionpressurization"pD"intendedforuseinpotentiallycombustibledustatmospheres.Thisstandardincludestherequirementsfortheconstructionoftheenclosureanditsassociatedcomponents,including,ifany,theinletandoutletductsfortheprotectivegas,andforthesafetyprovisionsanddevicesnecessarytoensurethatpressurizationisestablishedandmaintainedfortypeofprotectionpressurization"pD".Requirementsforpressurizedenclosureswithaninternalsourceofdustreleasearenotincludedinthisstandard.Thisstandarddoesnotcovertherequirementsforpressurizedroomswithorwithoutinternalsourcesofdustrelease.Thisstandarddoesnotapplytodustsofexplosiveswhichdonotrequireatmosphericoxygenforcombustionortopyrophoricsubstances.Thisstandarddoesnotcovercombinedgasanddusthazard.Thoserequirementsareunderconsideration.TherequirementscontainedinthisstandardaresupplementarytothoseinIEC61241-1-1.
【中国标准分类号】:K35
【国际标准分类号】:29_260_20
【页数】:22P;A4
【正文语种】:英语