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ID:12038705
大小:28.00 KB
页数:5页
时间:2018-07-15
《建筑施工现场临时用电方案》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、建筑施工现场临时用电方案一、工程概况:工程名称:西山南苑01-03幢工程地点:浦口区桥林街道建设单位:浦口区桥林街道办事处设计单位:南京城盛建筑设计有限公司01幢建筑面积3834m²,地上六层,砖混结构,建筑高度17.15m;02幢建筑面积2253.86m²,地上六层,砖混结构,建筑高度17.15m;02幢建筑面积3375.2m²,地上六层,砖混结构,建筑高度17.15m;本工程工程临时用电设备主要有塔吊、电焊机、钢筋加工机械、木工机械、水电机械、小型电动工具、照明用电等,总用电量为80KVA。二、供配电方式:
2、由甲方现场提供变压器处配电室引一路电源(VV22-4×185+1×95)至施工现场总配电柜。再由总配电箱,总配电柜处设电度表,以计量施工总电量。供电方式采用三相五线制TN-S系统.在总配电箱及末端箱,以及超过100m的箱内做重复接地,并与保护零线可靠连接.工作零线和保护零线要严格区分,不得混用。所有机电设备的金属外壳必须与保护接地做可靠连接。根据现场情况总配电柜处线采用放射式和树干式相结合的配电方式。对负荷比较大的塔吊单独回路配电,对负荷较远且较小的木工机械、钢筋机械及楼内修电原可采用树干配电方式。三、施工现场
3、配电线路:nthemainterminal,andthetelephoneOfficeisresponsibleforprovidingtheappropriatesizeadapterpatchpanelsandelectricalprotectionunit.(Shuttlebus)wiring(IDF)setupintheworkshoponthesecondfloorofthebuilding,locatedintheDistrictofweakelectricalcabinets(well).Engi
4、neroomplacedinsidetheCabinet,IDFplacedastandard40Ucabinetsforinstallationofnetworkandwiringdevices,managementcomputerandtelephoneinformation.CabinetdistributionframearemadeofSuperfiveRJ45patchpanelhorizontaltwistedpairconnections.Computerinformationmanagemen
5、t,adminareausingthejumpers,whichusesprivateRJ45-RJ45softjumpersfornetworkdeviceswithjumpershoppingbetweenallswitches,changes,expansionandmaintenanceweredonequicklyinthewiringcloset.TwistedlengthCentreroomislocatedonthesecondfloor,outwardradiationofeachline(e
6、xceptsomepointsmayexceed)doesnotexceed100metresinlength,allinformationforthevariousfloorsallrooms(distributionCabinet)unifiedmanagement.Districtworkshopbuildingdistributionlines(IDF)viafiberopticcablesconnectedtothetotalroomcabinets.Fiberlengthwere:workshops
7、twoIDF:totalmorethan1200squaremeters,doublethenumberofstrandscanbecalculatedbymultiplyingtheaveragelengthofthenumberofinformationpointsare.Averagelevelofeachlengthofcable:L=[(S1+S2)/2]+L1+L2l:averagelengthofcable;L1:MDFcableallowance;L2:otherallowancesS1:min
8、imumhorizontalcablelength;S2:maximumhorizontallengthofcable;Officebuildingofinformation:aminimumof26meters,thelongestwas92meters,L=[(28+92)/2]+2.5+1=62.5m;Totallengthof62.5mx792=49500-meterineac
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