IEC 60670-1-2002 家用和类似用途固定电气设施附件外壳.第1部分:一般要求
时间:2024-05-12 03:38:08 来源: 标准资料网 作者：标准资料网 阅读：8291
【英文标准名称】:Boxesandenclosuresforelectricalaccessoriesforhouseholdandsimilarfixedelectricalinstallations-Part1:Generalrequirements
【原文标准名称】:家用和类似用途固定电气设施附件外壳.第1部分:一般要求
【标准号】:IEC60670-1-2002
【标准状态】:现行
【国别】:国际
【发布日期】:2002-12
【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/SC23B
【标准类型】:()
【标准水平】:()
【中文主题词】:电力设备;接触安全装置;电气工程;民用电力设备;机械安全;固定的;装配设备;定义;作标记;检验;试验;低电压;多语种的;防电击;外壳;电气外壳;规范(验收);分类系统;家用的;电气安全;电气保护设备
【英文主题词】:Classificationsystems;Contactsafetydevices;Definitions;Domestic;Domesticelectricalinstallations;Electricenclosures;Electricalengineering;Electricalinstallations;Electricalprotectionequipment;Electricalsafety;Enclosures;Inspection;Installationequipment;Lowvoltage;Marking;Mechanicalsafety;Multilingual;Protectionagainstelectricshocks;Specification(approval);Stationary;Testing
【摘要】:ThispartofIEC60670appliestoboxes,enclosuresandpartsofenclosures(hereaftercalled"boxes"and"enclosures")forelectricalaccessorieswitharatedvoltagenotexceeding1000Va.c.and1500Vd.c.intendedforhouseholdorsimilarfixedel
【中国标准分类号】:Y60
【国际标准分类号】:29_120_10
【页数】:113P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforAutogenousStrainofCementPasteandMortar
【原文标准名称】:水泥浆和水泥砂浆自应力的标准测试方法
【标准号】:ASTMC1698-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C09.68
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:autogenousstrain;cementpaste;lengthchange;mortar
【摘要】:Autogenousstrainistheself-createdbulkstrainofcementpaste,mortar,orconcreteduringhardeningatconstanttemperature.Inconventionalconcrete,autogenousshrinkagestrainisgenerallynegligible,butinconcretewithlowwater-cementitiousmaterialsratio(w/cm)orwithsilicafumeitmaybeconsiderable(1).Restraintoftheautogenousstrainbyaggregatesoradjoiningstructuralmembersmayresultinformationofmicroandmacrocracksthatimpairstrength,durabilityandaesthetics.Cracksmayalsobeaproblemwithregardtohygieniccleaningofsurfaces.Anaccuratemeasurementoftheautogenousstrainofcementitiousmixtureswithloww/cmisimportantforevaluatingtheriskofearly-agecrackingofconcretestructures.Measurementsofautogenousstrainhavebeencarriedoutusingeithervolumetricorlinearmethods.Bothmethodsmayshowevidenceofsignificantartifacts(1);therefore,resultsofthetwomethodsmaydisagreeconsiderablyifnotcarriedoutproperly.Asealed,flexiblecorrugatedmoldsystem(2)combinestheadvantagesoflinearandvolumetricmeasurementofautogenousstrain,whileavoidingmostoftheirdisadvantages.Themoldeffectivelypreventsmoisturelossandminimizesrestrainttovolumechangeduringhardening.Moreover,resultsobtainedwiththecorrugatedmoldsystemagreewiththosefromthevolumetricmethod,oncesomeartifacts,inparticularwaterabsorptionthroughthemembraneusedtocontainthetestspecimen,havebeeneliminatedinthelatter(3,4).Thecorrugatedmoldsystemiseasiertouseandshowsbetterrepeatabilitythanthevolumetrictechnique(3,4).MeasurementswiththecorrugatedmoldsystemareingoodagreementwithunrestrainedlengthchangemeasurementsobtainedusingTestMethodC157/C157Mwithsealedspecimens(5);however,TestMethodC157/C157Mdoesnotallowmeasurementoftheshrinkageoccurringbefore24h(5).Thistestmethodcanbeusedtoevaluatetheeffectsofcementitiousmaterials,admixtures,andmixtureproportionsonautogenousshrinkagestrainofpasteormortarspecimens.Theautogenousshrinkagestrainofmortarspecimenswillbelessthanthatofpastespecimensforthesamew/cm.Theautogenousshrinkagestrainofconcretewillbelessthanthatofmortarforthesamew/cm.Thenominalmaximumaggregatesizeformortarusedinthistestmethodis4.75mm.1.1Thistestmethodmeasuresthebulkstrainofasealedcementpasteormortarspecimen,includingthosecontainingadmixtures,varioussupplementarycementitiousmaterials(SCM),andotherfinematerials,atconstanttemperatureandnotsubjectedtoexternalforces,fromthetimeoffinalsettinguntilaspecifiedage.Thisstrainisknownasautogenousstrain.Autogenousstrainismostsignificantinconcretewithlowwater-cementitiousmaterialsratio(w/cm)(SeeNote1).Note18212;Alowwater-cementitiousmaterialsratio(w/cm)canbeconsideredtobeawatertocementratioof0.40orlowerforthistest.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthe......
【中国标准分类号】:Q11
【国际标准分类号】:91_100_10
【页数】:8P.;A4
【正文语种】:
【英文标准名称】:Organiclightemittingdiodedisplays-Part1-2:terminologyandlettersymbols.
【原文标准名称】:有机发光二极管显示器.第1-2部分:术语和文字符号
【标准号】:NFC96-541-1-2-2010
【标准状态】:现行
【国别】:法国
【发布日期】:2010-05-01
【实施或试行日期】:2010-05-14
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;二极管;显示器;显示装置;电气工程;指示设备;指示;发光二极管LED;发光二极管;有机的;物理性能;规范(验收);符号
【英文主题词】:Definitions;Diodes;Display;Displayunits;Electricalengineering;Indicationinstrument;Indications;LED;Light-emittingdiodes;Organic;Physicalproperties;Specification(approval);Symbols
【摘要】:
【中国标准分类号】:L53
【国际标准分类号】:01_040_31;31_260
【页数】:31P;A4
【正文语种】:其他