【英文标准名称】:Electricpowerengineering-Modalcomponentsinthree-phasea.c.systems-Quantitiesandtransformations
【原文标准名称】:电力工程.三相交流系统用典型部件.数量和转换
【标准号】:BSEN62428-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2009-01-31
【实施或试行日期】:2009-01-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:导纳;交流电流;组件;定义;电气的;电气工程;能源技术;阻抗;矩阵;高温模量粘胶纤维;使用条件;物理学;画面尺寸;指针;尺寸;对称;三相电流;三相电力网;三相系统;变换;单位;矢量
【英文主题词】:Admittance;Alternatingcurrent;Components;Definition;Definitions;Electrical;Electricalengineering;Energytechnology;Impedance;Matrices;Modal;Operatingconditions;Physics;Picturesizes;Pointers;Size;Symmetry;Three-phasecurrent;Three-phasenetworks;Three-phasesystem;Transformation;Units;Vectordiagram
【摘要】:ThisInternationalStandarddealswithtransformationsfromoriginalquantitiesintomodalquantitiesforthewidelyusedthree-phasea.c.systemsinthefieldofelectricpowerengineering.Theexaminationofoperatingconditionsandtransientphenomenainthree-phasea.c.systemsbecomesmoredifficultbytheresistive,inductiveorcapacitivecouplingbetweenthephaseelementsandlineconductors.Calculationanddescriptionofthesephenomenainthree-phasea.c.systemsareeasierifthequantitiesofthecoupledphaseelementsandlineconductorsaretransformedintomodalquantities.Thecalculationbecomesveryeasyifthetransformationleadstodecoupledmodalsystems.Theoriginalimpedanceandadmittancematricesaretransformedtomodalimpedanceandadmittancematrices.Inthecaseofdecouplingofthemodalquantities,themodalimpedanceandadmittancematricesbecomediagonalmatrices.
【中国标准分类号】:P60
【国际标准分类号】:17_220_01
【页数】:30P.;A4
【正文语种】:英语


【英文标准名称】:Shipbuilding;inlandnavigationvessels;draughtscales
【原文标准名称】:造船内河航行吃水标尺
【标准号】:ISO7606-1988
【标准状态】:现行
【国别】:国际
【发布日期】:1988-11
【实施或试行日期】:1988-11-01
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC8
【标准类型】:()
【标准水平】:()
【中文主题词】:规范;海船;尺寸;内河运输;内河航行;船身;名称与符号;造船;吃水标志;船体标志
【英文主题词】:Designations;Dimensions;Draftmarks;Hullmarks;Hulls;Inlandnavigation;Inlandwaterwaytransport;Shipbuilding;Ships;Specifications
【摘要】:Specifiestypes,dimensions,locations,indicationmethodandcolourrequirementsforthedraughtscales.Type1determinesthedraughtbysignsanddigits,type2onlybydigits.Theloweredgeofthekeelshallbetakenasthemeasurementbase.
【中国标准分类号】:R20;U14
【国际标准分类号】:47_020_70
【页数】:5P.;A4
【正文语种】:英语