【英文标准名称】:ULStandardforSafetyElectricalEquipmentforUseinClassIandII,Division2,andClassIIIHazardous(Classified)LocationsThirdEdition;ReprintedWithRevisionsThroughandIncluding2/3/2004
【原文标准名称】:2类1级、2级和3级危险场所用电气设备
【标准号】:UL1604-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994-04-28
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:安全要求;危险区域;危害等级;电气器具;电气设备;危险场所分类(电气设备用)
【英文主题词】:safetyrequirements;electricalequipment;electricappliances;hazardousareasclassification(forelectricalequipment);dangerzones;hazardclasses
【摘要】:1.1Theserequirementsapplytoequipment,circuits,orcomponentsintendedforuseinClassI,GroupsA,B,C,andD,Division2,hazardous(classified)locations;ClassII,GroupsFandG,Division2,hazardous(classified)locations;andClassIII,Divisions1and2,hazardous(classified)locationsasdefinedinArticle500oftheNationalElectricalCode,NFPA70.1.2TheequipmentshallbecapableofbeinginstalledinaccordancewiththerequirementsintheNationalElectricalCode,NFPA70.Battery-poweredportableequipmentneednotcomplywiththisrequirement1.3TherequirementscoverClassI,Division2electricalequipment,orpartsofsuchequipment,inwhichthecircuitsandcomponentsunderintendedoperatingconditionsareincapableofcausingignitionofthespecifiedflammablegas-orvapor-airmixture.1.4TheserequirementscoverClassII,Division2,andClassIII,Division1andDivision2equipmentthatisconstructedtoreduceorexcludetheentranceofdust.1.5Theserequirementsapplyonlytoequipmentforuseunderthefollowingatmosphericconditions.a)Anambienttemperatureof5to40℃(41to104℉),b)Anoxygenconcentrationnotgreaterthan21percent,andc)Anominalbarometricpressureofoneatmosphere.1.6Theserequirementscoverportablebattery-poweredequipment,otherthanflashlightsandlanterns,forClassIandClassII,Division2,andClassIII,Divisions1and2hazardous(classified)locations.1.6.1Theserequirementsalsocoverequipment,circuits,orcomponentsintendedforinstallationanduseinClassI,Zone2,GroupsIIA,IIB,andIIChazardous(classified)locations.1.7TheserequirementsdonotcoverelectriclightingfixturesforuseinDivision2hazardous(classified)locationswhicharecoveredintheStandardforElectricLightingFixturesforUseinHazardous(Classified)Locations,UL844.1.8Theserequirementsdonotcoverelectricmotors,electricheaters,heattracingcablesandsimilarheat-producingdevices,orequipmentwithcathoderaytubes,foruseinDivision2locations.Suchproductsarecoveredunderseparaterequirements.1.9Theserequirementsdonotcoverexplosion-proof,dust-ignition-proof,orintrinsically-safemethodsofprotectionforelectricalequipmentorpartsthereof.SuchmethodsofprotectionareconsideredacceptableforDivision2hazardouslocations.Therequirementsarecoveredinotherstandards.1.10Aproductthatcontainsfeatures,characteristics,components,materials,orsystemsnewordifferentfromthosecoveredbytherequirementsinthisstandard,andthatinvolvesariskoffireorofelectricshockorinjurytopersonsshallbeevaluatedusingappropriateadditionalcomponentandend-productrequirementstomaintainthelevelofsafetyasoriginallyanticipatedbytheintentofthisstandard.Aproductwhosefeatures,characteristics,components,materials,orsystemsconflictwithspecificrequirementsorprovisionsofthisstandarddoesnotcomplywiththisstandard.Revisionofrequirementsshallbeproposedandadoptedinconformancewiththemethodsemployedfordevelopment,revision,andimplementationofthisstandard.
【中国标准分类号】:K35
【国际标准分类号】:29_260_20
【页数】:26P.;A4
【正文语种】:英语
基本信息
标准名称: | 碳酸锂、单水氢氧化锂、氯化锂化学分析方法 离子交换火焰原子吸收光谱法测定钙、镁、铜、锌、镍、锰、镉量 |
英文名称: | Lithium carbonate-Determination of calcium,magnesium,copper,zinc,nickel,manganese and cadmium content-Ion exchange-flame atomic absorption spectrometric method |
中标分类: |
冶金 >>
金属化学分析方法 >>
稀有金属及其合金分析方法 |
ICS分类: |
化工技术 >>
无机化学
|
发布部门: | 中国有色金属工业协会 |
发布日期: | 1989-03-31 |
实施日期: | 1990-02-01 |
首发日期: | 1989-03-31 |
作废日期: | 1900-01-01 |
主管部门: | 中国有色金属工业协会 |
提出单位: | 中国有色金属工业总公司标准计量研究所 |
归口单位: | 全国有色金属标准化技术委员会 |
起草单位: | 北京有色金属研究总院 |
起草人: | 李淑芬 |
出版社: | 中国标准出版社 |
出版日期: | 1990-02-01 |
页数: | 6页 |
适用范围
本标准规定了碳酸锉巾钙、镁、铜、锌、镍、锰和福含量的测定方法。本标 准 适 用于荧光粉级碳酸锉中钙、镁、铜、锌、镍、锰和锡含量的测定,也适用于其中一个元素含量的单独测定测定范围:钙。.000 10%一。.010%;镁、镐、铜、锌、镍、锰0. 000 10%-0.006 0%。
前言
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引用标准
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所属分类: 冶金 金属化学分析方法 稀有金属及其合金分析方法 化工技术 无机化学