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QJ 978A-2005 航天电子产品装配图简化画法

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基本信息
标准名称:航天电子产品装配图简化画法
中标分类:
ICS分类: 综合、术语学、标准化、文献 >> 技术制图 >> 电气和电子工程制图
替代情况:QJ 978-1986
发布日期:
实施日期:2006-05-01
首发日期:
作废日期:
出版日期:
页数:38页
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所属分类: 综合 术语学 标准化 文献 技术制图 电气和电子工程制图
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【英文标准名称】:ULStandardforSafetyIntrinsicallySafeApparatusandAssociatedApparatusforUseinClassI,II,andIII,DivisionI,Hazardous(Classified)LocationsSeventhEdition
【原文标准名称】:在I、II和III级1区危险(分类)场所使用的安全固有安全装置和附属装置的UL标准.第7版
【标准号】:UL913-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006-07-31
【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】:器具;定义;设计;防尘;危害等级;危害;固有安全电气装置;安全;安全工程;规范(验收);试验
【英文主题词】:Apparatus;Definition;Definitions;Design;Dusttight;Hazardclasses;Hazards;Intrinsicallysafeelectricaldevices;Safety;Safetyengineering;Specification(approval);Testing
【摘要】:1.1TheserequirementsapplytoapparatusorpartsofapparatusforinstallationanduseinClassI,II,orIII,Division1hazardous(classified)locationsinaccordancewiththerequirementsoftheNationalElectricalCode,NFPA70.1.1effectiveJuly31,20121.1.1TheserequirementsalsoapplytoapparatusorpartsofapparatusforinstallationanduseinZone20and21hazardous(classified)locationsinaccordancewiththerequirementsoftheNationalElectricalCode,NFPA70.Added1.1.1effectiveJuly31,20121.2Theserequirementsalsocoverassociatedapparatuslocatedoutsideofthehazardous(classified)locationwhosedesignandconstructionmayinfluencetheintrinsicsafetyofanelectricalcircuitwithinthehazardous(classified)location.Revised1.2effectiveJuly31,20121.3Theserequirementsarebasedonconsiderationofignitioninlocationsclassifiedasahazardouslocationbythepresenceofflammableorcombustiblematerialundernormalatmosphericconditions.1.3effectiveJuly31,20121.4Forthepurposesofthisstandard,normalatmosphericconditionsareconsideredtobe:a)Anambienttemperatureof40°C(104°F);b)Anoxygenconcentrationnotgreaterthan21percentbyvolume;andc)Apressureofoneatmosphere.1.4effectiveJuly31,20121.5Thisstandarddoesnotcoverapparatusbasedonhighvoltageelectrostaticprinciplessuchaselectrostaticpaintspraying.1.5effectiveJuly31,2012
【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


【英文标准名称】:Industrialfans-Determinationoffansoundpowerlevelsunderstandardizedlaboratoryconditions-Part3:Envelopingsurfacemethods
【原文标准名称】:工业风扇.标准化实验室条件下风扇声功率级的测定.第3部分:包络面法
【标准号】:ISO13347-3-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-08
【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/TC117
【标准类型】:()
【标准水平】:()
【中文主题词】:风扇;声压;声压级;声级;空气噪声;噪声测量;包络面法;声学性质和声学现象;实验室试验;通风机;声学测量;测量技术;消声器;工业设施;空调系统
【英文主题词】:Acousticmeasurement;Acousticpropertiesandphenomena;Airbornenoise;Air-conditioningsystems;Envelopingsurfacemethods;Fans;Industrialfacilities;Laboratorytesting;Measuringtechniques;Noisemeasurements;Silencers;Soundlevel;Soundpressure;Soundpressurelevel;Ventilators
【摘要】:ThispartofISO13347appliestoindustrialfansasdefinedinISO5801andISO13349.Itislimitedtothedeterminationofairbornesoundemissionforthespecifiedset-ups.Vibrationisnotmeasured,noristhesensitivityofairbornesoundemissiontovibrationeffectsdetermined.ThesizesoffanwhichcanbetestedinaccordancewiththispartofISO13347arelimitedonlybythepracticalaspectsofthetestset-up.Dimensionallimitations,testfandimensions,andairperformancewillcontroltheroomsize,powerandmountingrequirementsforthetestfan.(SmallfansmaybetestedaccordingtothispartofISO13347ortoISO10302,accordingtousage).ThetestarrangementsinthispartofISO13347establishthelaboratoryconditionsnecessaryforasuccessfultest.RarelywillitbepossibletomeettheserequirementsinsituandthispartofISO13347isnotintendedforfieldmeasurements.Intendingusersareremindedthat,inthesesituations,theremaywellbeadditionalacousticsystemeffectswhereinletandoutletconditionsatthefanarelessthanideal.Theenvelopingsurfacemethodsmaybeusedforthedeterminationofopeninletand/oropenoutletsoundpowerleveloffansforthestandardizedinstallationtypesgivenin3.1.Anestimation(withincreaseduncertainty)ofductedsoundpowerforfanstoosmall,orotherwiseinconvenient,fortestingbythein-ductmethoddescribedinISO5136mayalsobeobtainedbytheadditionofendreflectioncorrections(seeAnnexCofISO13347-1:2004).
【中国标准分类号】:J72
【国际标准分类号】:17_140_20;23_120
【页数】:21P.;A4
【正文语种】:英语