IEC/TS 62610-3-2009 电子设备用机械结构.符合IEC60297及60917系列标准的机壳热量管理.第3部分:设计指南:热电冷却系统用评估方法(珀尔帖效应)
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【英文标准名称】:Mechanicalstructuresforelectronicequipment-ThermalmanagementforcabinetsinaccordancewithIEC60297and60917series-Part3:Designguide:Evaluationmethodforthermoelectricalcoolingsystem(Peltiereffect)
【原文标准名称】:电子设备用机械结构.符合IEC60297及60917系列标准的机壳热量管理.第3部分:设计指南:热电冷却系统用评估方法(珀尔帖效应)
【标准号】:IEC/TS62610-3-2009
【标准状态】:现行
【国别】:国际
【发布日期】:2009-12
【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/SC48D
【标准类型】:()
【标准水平】:()
【中文主题词】:组装件;机箱架;底盘;冷却;定义;设计;尺寸;电气工程;电子工程;电子设备;电子仪器;外壳;设备;架设(施工作业);固定件;面板;接口系统;纵梁;主要尺寸;珀尔帖效应;支架;表示法;结构体系;辅助框架;适用于插入链接;19英寸系列;482
【英文主题词】:Assemblies;Cabinetrack;Chassis;Cooling;Definitions;Design;Dimensions;Electricalengineering;Electronicengineering;Electronicequipment;Electronicinstruments;Enclosures;Equipment;Erecting(constructionoperation);Fixings;Frontpanels;Interfacesystems;Longitudinalgirders;Maindimensions;Peltier;Racks;Representations;Structuralsystems;Subracks;Suitableforplug-inconnection;19inchseries;482,6mmseries
【摘要】:
【中国标准分类号】:L94
【国际标准分类号】:31_240
【页数】:30P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforMeasuringRelativeComplexPermittivityandRelativeMagneticPermeabilityofSolidMaterialsatMicrowaveFrequenciesUsingCoaxialAirLine
【原文标准名称】:使用同轴空气电缆测量微波频率下固体材料相对复合电容率和相对磁导率的标准试验方法
【标准号】:ASTMD7449/D7449M-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D09.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:coaxialline;dielectricconstant;lossfactor;magneticpermeability;measurement;microwave;millimetrewave;permittivity;radiofrequency;scatteringparameter;transmission/reflection
【摘要】:Designcalculationsforradiofrequency(RF),microwaveandmillimetre-wavecomponentsrequiretheknowledgeofvaluesofcomplexpermittivityandpermeabilityatoperatingfrequencies.Thistestmethodisusefulforevaluatingsmallexperimentalbatchorcontinuousproductionmaterialsusedinelectromagneticapplications.Usethismethodtodeterminecomplexpermittivityonly(innon-magneticmaterials)orbothcomplexpermittivityandpermeabilitysimultaneously.1.1Thistestmethodcoversaprocedurefordeterminingrelativecomplexpermittivity(relativedielectricconstantandloss)andrelativemagneticpermeabilityofisotropic,reciprocal(non-gyromagnetic)solidmaterials.Ifthematerialisnonmagnetic,itisacceptabletousethisproceduretomeasurepermittivityonly.1.2Thismeasurementmethodisvalidoverafrequencyrangeofapproximately1MHztoover20GHz.Theselimitsarenotexactanddependonthesizeofthespecimen,thesizeofcoaxialairlineusedasaspecimenholder,andontheapplicablefrequencyrangeofthenetworkanalyzerusedtomakemeasurements.Thepracticallowerandupperfrequenciesarelimitedbyspecimendimensionrequirements(large,thickspecimensatlowfrequenciesandsmallspecimensathighfrequencies).Foragivenairlinesize,theupperfrequencyisalsolimitedbytheonsetofhigherordermodesthatinvalidatethedominant-modetransmissionlinemodelandthelowerfrequencyislimitedbythesmallestmeasurablephaseshiftthroughaspecimen.Beinganon-resonantmethod,theselectionofanynumberofdiscretemeasurementfrequenciesinameasurementbandwouldbesuitable.Thecoaxialfixtureispreferredoverrectangularwaveguidefixtureswhenbroadbanddataaredesiredwithasinglesampleorwhenonlysmallsamplevolumesareavailable,particularlyforlowerfrequencymeasurements1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.Theequationsshownhereassumeane+jx03C9;tharmonictimeconvention.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A55
【国际标准分类号】:17_220_20
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:Engineerswrenches,doublehead-TesttorquesseriesC
【原文标准名称】:双头呆扳手.C系列的检验扭矩
【标准号】:DIN3110-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-09
【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】:设计;尺寸;双;双头螺母板手;架设(施工作业);手工工具;开口宽度;钥匙;长度;作标记;开口扳手;成对;额定值;旋具和螺母扳手;窥探;螺母扳手;试验扭矩;试验条件;公差(测量);工具;扭矩;对边宽度;扳手
【英文主题词】:
【摘要】:
【中国标准分类号】:J47
【国际标准分类号】:25_140_30
【页数】:7P;A4
【正文语种】:德语
