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【英文标准名称】:MethodforMeasuringRelativeResistanceofWall,Floor,andRoofConstructionstoImpactLoading(04.11)
【原文标准名称】:墙、楼板和屋顶结构的相对抗冲击负荷的测量方法
【标准号】:ANSI/ASTME695-2003
【标准状态】:作废
【国别】:美国
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:1底部;2测量技术;3屋顶;4墙
【英文主题词】:roofs;bottom;measuringtechniques;walls
【摘要】:
【中国标准分类号】:Q17
【国际标准分类号】:91_060_01
【页数】:
【正文语种】:英语


【英文标准名称】:Overheadlines-Calculationoftheelectricalcomponentofdistancebetweenlivepartsandobstacles-Methodofcalculation
【原文标准名称】:架空线带电部分与障碍物间距离的电气分量的计算计算方法
【标准号】:IEC61865-2001
【标准状态】:现行
【国别】:国际
【发布日期】:2001-07
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC11
【标准类型】:()
【标准水平】:()
【中文主题词】:距离;架空线;导电体;障碍;裸的;数学计算;定义;电气工程
【英文主题词】:Bare;Definition;Definitions;Distances;Electricconductors;Electricalengineering;Mathematicalcalculations;Obstacles;Overheadpowerlines
【摘要】:ThisInternationalStandardprovidesguidanceforthecalculationofelectricaldistancesbetweenliveandearthedpartsrequiredtopreventair-gapbreakdownwhichmayendangermembersofthepublicwholegitimatelycomeclosetoliveparts.Itisapplicableonlytooverheadlinesdesignedtooperateatmorethan45kVphase-to-phasea.c.Itdealswiththeelectricalcomponentofdistancesbetweenconductorsandmovableobjects-vehiclesontheground,vesselsonwater,personsontopofobjectsorontheground,wildlifeontheground(butnotairborne),etc.Thisstandarddoesnotdealwiththefollowingpublicandworkersafetyaspects:·stationaryobjects-structuresbeneathornexttolines,trees,groundcontours,etc.These,ingeneral,requireconsiderationastowhetherthestructurecanbeclimbedon,theextenttowhichthetreewillgrow,etc;·minimumapproachdistanceforliveworking,whichisdealtwithinIEC61472;·capacitivecouplingormagneticinductionbyoverheadlines,suchasvoltagesinducedinvehiclesunderaline,orinpipelinesburiedalongsideit;·currentsflowinginthegroundthatoriginatefromlinesandresultinstepandtouchvoltagesaroundstructuresduringlinefaultsorlightningstrikes;·flashoveroflineinsulatorsorsparkgaps,oraphase-to-phasedischarge,resultinginaudibleandelectricalnoiseandintensearcs;·dielectricbreakdownoftheairbetweentheconductorsandthegroundduetolargefiresbeneathconductors;·minimumelectricaldistancesrequiredtopreventdischargetoadjacentoverheadpowerorcommunicationcircuits.Thisstandarddoesnotgivetheelectricaldistancerequirementsforthedesignofoverheadlinestructures.Neitherdoesitgivethedistancerequirementsforoverheadlinestructureswhichneedtobeaccessibletoworkerswhilethelineisenergized(forexample,distancestolineworkersorpainters).Distancesbetweenconductorsandthestructureofthetowerarenormallychosentomeettherequiredoperatingreliabilityoftheline.Itispossiblethatthisdistancemaynotalwaysbeadequatetoallowliveworkingor,insomecases,accessforworkerstopartsofthestructureneartoliveconductors.
【中国标准分类号】:F21
【国际标准分类号】:29_240_20
【页数】:45P;A4
【正文语种】:英语