【英文标准名称】:Waterproofingofroofs-Sealingsfornon-utilizedroofs-Part2:Materials
【原文标准名称】:屋顶的防水.无用屋顶的密封件.第2部分:材料
【标准号】:DIN18531-2-2008
【标准状态】:作废
【国别】:德国
【发布日期】:2008-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:沥青片;沥青;组件;建筑;防潮层;弹性体;材料;计划;塑料薄板;塑料;高聚物;聚氯乙烯;性能;雨水控制系统;屋顶区;屋顶密封;屋面垫层;屋顶;密封;熔焊板;薄板材;弹性体薄板材;规范(验收);热塑性聚合物;防水板;防水材料;水密材料;气候防护系统
【英文主题词】:Bitumensheets;Bitumens;Components;Construction;Damp-proofcourses;Elastomers;Materials;Planning;Plasticsheets;Plastics;Polymers;Polyvinylchloride;Properties;Rainwatercontrolsystems;Roofarea;Roofsealing;Roofunderlays;Roofs;Sealing;Sheetingsforfusewelding;Sheets;Sheetsofelastomer;Specification(approval);Thermoplasticpolymers;Waterproofsheetings;Waterproofingmaterials;Weatherprotectionsystems
【摘要】:
【中国标准分类号】:Q17
【国际标准分类号】:91_100_50
【页数】:13P.;A4
【正文语种】:德语


【英文标准名称】:Short-circuitcurrentsind.cauxiliaryinstallationsinpowerplantsandsubstations-Calculationofshort-circuitcurrents
【原文标准名称】:发电厂和变电所直流辅助设备短路电流.第1部分:短路电流计算
【标准号】:BSEN61660-1-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-10-15
【实施或试行日期】:1997-10-15
【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】:电桥;三相电流;发电站;误差修正;电力传输;电路;直流电传输;电阻;公式;电容器;短路电流;电池;直流发电机;辅助的;电动机;直流电流;交流电流;电气设备;电力变换器;电力设备;数学计算
【英文主题词】:Bridgecircuits;Circuits;Definitions;Directcurrent;Directcurrentinstallations;Electricconvertors;Electricpowernetworks;Electricpowerstations;Electricalengineering;Faultcurrents;Mathematicalcalculations;Methodsofcalculation;Plant;Shortcircuitimpedance;Shortcircuits;Short-circuitcurrents;Substation;Switchgears;Symbols;Three-phase
【摘要】:ThispartofIEC61660describesamethodforcalculatingshort-circuitcurrentsind.c.auxiliarysystemsinpowerplantsandsubstations.Suchsystemscanbeequippedwiththefollowingequipment,actingasshort-circuitcurrentsources:-rectifiersinthree-phasea.c.bridgeconnectionfor50Hz;-stationarylead-acidbatteries;-smoothingcapacitors;-d.c.motorswithindependentexcitation.NOTE-Rectifiersinthree-phasea.c.bridgeconnectionfor60Hzareunderconsideration.Thedataofotherequipmentmaybegivenbythemanufacturer.Thisstandardisonlyconcernedwithrectifiersinthree-phasea.c.bridgeconnection.Itisnotconcernedwithothertypesofrectifiers.Thepurposeofthestandardistoprovideagenerallyapplicablemethodofcalculationwhichproducesresultsofsufficientaccuracyontheconservativeside.Specialmethods,adjustedtoparticularcircumstances,maybeusediftheygiveatleastthesameprecision.Short-crrcuitcurrents,resistancesandinductancesmayalsobeascertainedfromsystemtestsormeasurementsonmodelsystems.Inexistingd.c.systemsthenecessaryvaluescanbeascertainedfrommeasurementstakenattheassumedshort-circuitlocation.Theloadcurrentisnottakenintoconsiderationwhencalculatingtheshort-circuitcurrent.Itisnecessarytodistinguishbetweentwodifferentvaluesofshort-circuitcurrent:-themaximumshort-circuitcurrentwhichdeterminestheratingoftheelectricalequipment;-theminimumshort-circuitcurrentwhichcanbetakenasthebasisforfuseandprotectionratingsandsettings.
【中国标准分类号】:F20
【国际标准分类号】:17_220_01;29_240_01
【页数】:40P.;A4
【正文语种】:英语