IEC 60335-2-24-1992 家用和类似电器的安全.第2部分第24节:电冰箱和食物冷冻设备以及制冰机的特殊要求
时间:2024-04-29 03:19:42 来源: 标准资料网 作者：标准资料网 阅读：9681
【英文标准名称】:Safetyofhouseholdandsimilarelectricalappliances;part2:particularrequirementsforrefrigerators,food-freezersandice-makers
【原文标准名称】:家用和类似电器的安全.第2部分第24节:电冰箱和食物冷冻设备以及制冰机的特殊要求
【标准号】:IEC60335-2-24-1992
【标准状态】:作废
【国别】:国际
【发布日期】:1992-01
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC61C
【标准类型】:()
【标准水平】:()
【中文主题词】:家用设备;电气设备;安全要求;家用电器;电气工程;制冷机;冷藏柜
【英文主题词】:freezers;electricalhouseholdappliances;safetyrequirements;freezingcupboards;electricappliances;householdequipment;refrigerators;electricalengineering
【摘要】:
【中国标准分类号】:Y61
【国际标准分类号】:5390
【页数】:71P;A4
【正文语种】:英语
【英文标准名称】:Mechanicalvibration-Evaluationofmachinevibrationbymeasurementsonnon-rotatingparts-Part2:Largeland-basedsteamturbinegeneratorsetsinexcessof50MW(ISO10816-2:1996)
【原文标准名称】:机械振动.通过在非旋转部件上测量来评定机械振动.第2部分:功率50MW以上大型固定式蒸气轮发电机组
【标准号】:DINISO10816-2-1997
【标准状态】:作废
【国别】:德国
【发布日期】:1997-08
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:振动强度;评定;机器;测量技术;机械工程;发电机组;振动工程;组件;验收试验;振动试验;固定的;振动;性能;振动测量;机械试验;汽轮发电机组;测量
【英文主题词】:
【摘要】:
【中国标准分类号】:Z32
【国际标准分类号】:17_160
【页数】:7P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforPorosityinGoldandPalladiumCoatingsbySulfurousAcid/Sulfur-DioxideVapor
【原文标准名称】:用亚硫酸/SO2蒸汽测试金和钯镀层孔隙度的标准试验方法
【标准号】:ASTMB799-1995(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:B02.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:goldcoatings;goldplatings;palladiumcoatings;palladiumplatings;platingporosity;porecorrosiontest;porositytesting;sulfurdioxidetest;sulfurousacid/SO2test;Contactsurfaces;Contamination--coatings;Corrosion--electrodeposited
【摘要】:Goldcoatingsareoftenspecifiedforthecontactsofseparableelectricalconnectorsandotherdevices.Electrodepositsaretheformofgoldthatismostusedoncontacts,althoughitisalsoemployedasinlayorcladmetalandasweldmentsonthecontactsurface.Theintrinsicnobilityofgoldenablesittoresisttheformationofinsulatingoxidefilmsthatcouldinterferewithreliablecontactoperation.Palladiumcoatingsaresometimesspecifiedasalternativestogoldonelectricalcontactsandsimilarelectricalcomponentsurfaces,bothaselectrodepositsandasinlayorcladmetal.Thistestmethodisparticularlysuitablefordeterminingporosityinpalladiumcoatings,sincethereactiveatmospherethatisuseddoesnotattackthepalladiumifthespecifiedtestconditionsarefollowed.Incontrast,palladiumcoatingsareattackedbynitricacid(HNO3)andotherstrongoxidizingagents,sothatTestMethodB735cannotbeusedfordeterminingtheporosityinsuchcoatings.Inorderforthesecoatingstofunctionasintended,porosity,cracks,andotherdefectsinthecoatingthatexposebase-metalsubstratesandunderplatesmustbeminimalorabsent,exceptinthosecaseswhereitisfeasibletousethecontactsinstructuresthatshieldthesurfacefromtheenvironmentorwherecorrosioninhibitingsurfacetreatmentsforthedepositareemployed.Thelevelofporosityinthecoatingthatmaybetolerabledependsontheseverityoftheenvironmenttotheunderplateorsubstrate,designfactorsforthecontactdeviceliketheforcewithwhichitismated,circuitparameters,andthereliabilityofcontactoperationthatitisnecessarytomaintain.Also,whenpresent,thelocationofporesonthesurfaceisimportant.Iftheporesarefewinnumberandareoutsideofthezoneofcontactofthematingsurfaces,theirpresencecanoftenbetolerated.Methodsfordeterminingporesonacontactsurfacearemostsuitableiftheyenabletheirpreciselocationandnumberstobedetermined.Contactsurfacesareoftencurvedorirregularinshape,andtestingmethodsshouldbesuitableforthem.Inaddition,theseverityofporosity-determiningtestsmayvaryfromprocedurescapableofdetectingallporositytoproceduresthatdetectonlyhighlyporousconditions.Thepresenttestmethodiscapableofdetectingvirtuallyallporosityorotherdefectsthatcouldparticipateincorrosionreactionswiththesubstrateorunderplate.Thetestisrapid,simple,andinexpensive.Inaddition,itcanbeusedoncontactshavingcomplexgeometrysuchaspin-socketcontacts(althoughwithdeeprecessesitispreferredthatthecontactstructuresbeopenedtopermitreactionofthesulfurdioxidewiththeinteriorsignificantsurfaces).Therelationshipofporositylevelsrevealedbyparticularteststocontactbehaviormustbemadebytheuseroftheseteststhroughpracticalexperienceorbyjudgment.Thus,absenceofporosityinthecoatingmaybearequirementforsomeapplications,whileafewporesinthecontactzonemaybeacceptableforothers.Thistestisconsidereddestructiveinthatitrevealsthepresenceofporositybycontaminatingthesurfacewithcorrosionproductsandbyundercuttingthecoatingatporesitesorattheboundariesoftheunplatedareas.Anypartsexposedtothistestshallnotbeplacedinservice.Thistestisintendedtobeusedforquantitativedescriptionsofporosity(suchasnumberofporesperunitareaorpercontact)onlyoncoatingsthathaveaporedensitysufficientlylowthatthecorrosionsitesarewellseparatedandcanbereadilyresolved.Asageneralguidelinethiscanbeachievedforporedensitiesuptoabout100/cm2.Abovethisvaluethetestsareusefulforthequalitativedetectionandcomparisonsofporosity.Forthesepurposes,themeasurementarea