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【英文标准名称】:Calculationofthecyclicandemergencycurrentratingofcables-Cyclicratingfactorforcablesofallvoltages,withpartialdryingofthesoil
【原文标准名称】:电缆周期性和事故电流定额计算.不完全干燥土壤的一切电压电缆用周期定额因数
【标准号】:BSIEC60853-3-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-09-23
【实施或试行日期】:2002-09-23
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:额定电压;电容测量;数学计算;试验周期;载流量;应急电力设备;瞬时电压;高电压;应急电源;电容;容量;电气工程;电缆;电缆;事故带电作业;额定值;试验;周期性荷载;交流电源
【英文主题词】:Alternatesupply;Cables;Capacitance;Capacitancemeasurement;Capacity;Currentcarryingcapacity;Cyclicloading;Electriccables;Electricalengineering;Emergencyelectricalinstallations;Emergencypower;Emergencypoweroperation;Highvoltage;Mathematicalcalculations;Ratedvoltage;Ratings;Testcycles;Testing;Transientvoltages
【摘要】:ThispartofIEC60853givesamethodforcalculatingthecyclicratingfactor,forcablesofallvoltages,wherepartialdryingoutofthesurroundingsoilisanticipated.ThemethodisbasedononeofthethreemethodspublishedinaCIGREdocument.Themethodisapplicabletoanytypeofcable,butitisrecommendedthatitshouldbeappliedonlytoinstallationsofonemulti-corecableortothreesingle-corecablesortogroupsofcircuitswheretheintercircuitspacingissufficienttopermitfreeverticalmovementofsoilmoisturebetweenthezonesofdrysoilassociatedwitheachcircuit.Thisstandarddoesnotprecludetheuseofothermethodsofcalculationwherefulldetailsoftheloadcyclearenotknown.Themethodassumesthattheentireregionsurroundingacableorcableshasuniformthermalcharacteristicspriortodryingout;theonlynon-uniformitybeingthatcausedbydrying.Asaconsequencethemethodshouldnotbeapplied,withoutfurtherconsideration,toinstallationswherespecialbackfills,havingpropertiesdifferentfromthesitesoil,areused.note:1Methodsforcalculatingcyclicratingsforburiedcableswithpartialdryingoutofthesurroundingsoil:ElectraNo145,December1992,page32.
【中国标准分类号】:K13
【国际标准分类号】:29_060_20
【页数】:18P.;A4
【正文语种】:英语


【英文标准名称】:Specificationforbarsandextrudedsectionsofmagnesium-3%zinc-zirconiumalloy(notexceeding100mmdiameterorminorsectionaldimension)(Zn3.0,Zr0.6)
【原文标准名称】:镁-锌(3)-锆(0.6)合金棒材和挤压型材规范(直径或较小截面尺寸小于100mm)
【标准号】:BS2L505-1973
【标准状态】:作废
【国别】:英国
【发布日期】:1973-03-15
【实施或试行日期】:1973-03-15
【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】:材料的机械性能;含锌合金;棒材;金属型材;镁合金;含锆合金;航空运输工程;化学成分;尺寸
【英文主题词】:chemicalcomposition;mechanicalpropertiesofmaterials;metalsections;dimensions;airtransportengineering;zirconium-containingalloys;zinc-containingalloys;magnesiumalloys;bars(materials)
【摘要】:BritishStandard:AerospaceSeriesSpecificationforBarsandextrudedsectionsofmagnesium-3%zinc-zirconiumalloy1.Inspectionandtestingprocedure2.Qualityofmaterial3.Chemicalcomposition4.Condition5.Heattreatment6.Mechanicalproperties
【中国标准分类号】:H62
【国际标准分类号】:49_025_99
【页数】:2P.;A4
【正文语种】:英语