1、临时用电施工方案

临时用电施工方案项目名称：*********建设单位：*******设计单位：*******监理单位：******施工单位：****二○一五年六月二十日2目录1．编制依据............................................................32．工程概况及编制依据..................................................33．施工设备............................................................34．设计内容和步骤......................................................44.1现场勘探及初步设计:............................................44.2负荷计算:......................................................55.线径计算选择、设备选型..............................................105.1线径计算选择..................................................105.2选择总箱的进线截面及进线开关..................................195.3选择变压器....................................................206.绘制临时供电施工图..................................................207.安全用电措施........................................................317.1安全用电技术措施..............................................317.2安全用电组织措施..............................................408.安全用电防火措施....................................................418.1施工现场发生火灾的主要原因....................................418.2预防电气火灾的措施............................................419.防雷装置设计........................................................4310.接地装置设计.......................................................4311.临时用电施工布置图..................................错误!未定义书签。31．编制依据《施工现场临时用电安全技术规范》JGJ46-2006；《低压配电设计规范》GB50054-2011；《供配电系统设计规范》GB50052-95；《通用用电设备配电设计规范》GB50055-93；《建筑施工安全检查标准》JGJ59-2011；《建筑施工安全检查评分标准》JGJ59-99；《建筑工程施工现场供电安全规范》GB50194-93；施工现场总平面勘察情况；施工现场主要设备负荷布置情况。2．工程概况及编制依据*****3．施工设备序号机械（设备）名称型号额定功率（KW）台（套）数合计用电（KW)1塔吊QTZ551036.44145.62混凝土运输泵HBT60-13-90s9021803人货梯SC200/200TD3351654钢筋对焊机UN1-25252505交（直）流弧焊机BX1-500202406钢筋调直机GJB7-4004.4417.67钢筋切断机GT4-144.54188钢筋弯曲机GW-6/4034129钢筋滚丝机HGS-40型42810高压水泵PQ402412411潜污泵80QW90-125.563312砼插入式振捣器ZX501.51827413砼平板振捣器6T2-632.2817.614木工圆盘锯MJ109684815砂轮切割机J3GY-LD-400A2.224.416砂浆搅拌机JD3507.586017高压汞灯382418碘钨灯1202019空调1.58012020打印机设备佳能0.821.621食堂电器1.8254522照明灯0.0510054．设计内容和步骤4.1现场勘探及初步设计:4.1.1本工程所在施工现场范围内施工前无各种埋地管线。4.1.2现场采用380V低压供电，设一配电总箱，内有计量设备，采用TN-S系统供电。4.1.3根据施工现场用电设备布置情况，总箱进线采用导线直接埋地敷设，西边干线沿围墙采用电缆横档敷设，东边干线沿围墙埋地敷设，用电设备导线采用穿硬塑料管敷设。布置位置及线路走向参见临时配电系统图及现场平面图，采用三级配电，两级防护。4.1.4按照《JGJ46-2005》规定接地电阻R≤4Ω。4.1.5对于PE线的说明:根据规范《施工现场临时用电安全技术规范(JGJ46-2005)5.1.8的要求，PE线所用材质与相线、工作零线(N线)相同时，其最小截面应符合下表的规定：相线芯线截面S(mm2)PE线最小截面(mm2)S≤16S16S≤35165S35S/2对PE线的截面选择要满足以上要求，在供电系统图中不再注明PE线截面。4.2负荷计算:4.2.1塔吊Kx=0.3，Cosφ=0.6，tgφ=1.33将Jc=40%统一换算到Jc1=25%的额定容量Pn=36.4kWPe=n×(Jc/Jc1)1/2×Pn=4×(0.4/0.25)1/2×36.4=184.17kWPjs=Kx×Pe=0.3×184.17=55.25kWQjs=Pjs×tgφ=18.21×1.33=73.48kvar4.2.2混凝土运输泵Kx=0.3，Cosφ=0.6，tgφ=1.33Pjs=0.3×2×90=54kWQjs=Pjs×tgφ=54×1.33=71.82kvar4.2.3人货电梯Kx=0.3，Cosφ=0.6，tgφ=1.33Pjs=0.3×5×33=49.5kWQjs=Pjs×tgφ=49.5×1.33=65.84kvar4.2.4钢筋对焊机Kx=0.35，Cosφ=0.7，tgφ=1.02将Jc=50%统一换算到Jc1=100%的额定容量Pn=25kWPe=n×(Jc/Jc1)1/2×Pn=2×(0.5/1)1/2×25=35.36kWPjs=Kx×Pe=0.35×35.36=12.37kW6Qjs=Pjs×tgφ=12.37×1.02=12.62kvar4.2.5交（直）流弧焊机Kx=0.35，Cosφ=0.7，tgφ=1.02将Jc=50%统一换算到Jc1=100%的额定容量Pn=20kWPe=n×(Jc/Jc1)1/2×Pn=2×(0.5/1)1/2×20=28.28kWPjs=Kx×Pe=0.35×28.28=9.9kWQjs=Pjs×tgφ=9.9×1.02=10.1kvar4.2.6钢筋调直机Kx=0.65，Cosφ=0.7，tgφ=1.02Pjs=0.65×4.4×4=11.44kWQjs=Pjs×tgφ=11.44×1.02=11.67kvar4.2.7钢筋切断机Kx=0.65，Cosφ=0.7，tgφ=1.02Pjs=0.65×4.5×4=11.7kWQjs=Pjs×tgφ=11.7×1.02=11.93kvar4.2.8钢筋弯曲机Kx=0.65，Cosφ=0.7，tgφ=1.02Pjs=0.65×4×3=7.8kWQjs=Pjs×tgφ=7.8×1.02=7.96kvar4.2.9钢筋滚丝机Kx=0.65，Cosφ=0.6，tgφ=1.33Pjs=0.65×4×2=5.2kWQjs=Pjs×tgφ=5.2×1.33=5.3kvar74.2.10高压水泵Kx=0.75，Cosφ=0.8，tgφ=0.75Pjs=0.75×24=18kWQjs=Pjs×tgφ=18×0.75=13.5kvar4.2.11潜污泵Kx=0.75，Cosφ=0.8，tgφ=0.75Pjs=0.75×5.5×6=24.75kWQjs=Pjs×tgφ=24.75×0.75=18.56kvar4.2.12砼插入式振动器Kx=0.3，Cosφ=0.7，tgφ=1.02Pjs=0.3×1.5×18=3.6kWQjs=Pjs×tgφ=3.6×1.02=3.67kvar4.2.13砼平板式振动器Kx=0.3，Cosφ=0.7，tgφ=1.02Pjs=0.3×2.2×8=1.32kWQjs=Pjs×tgφ=1.32×1.02=1.35kvar4.2.14木工圆盘锯Kx=0.65，Cosφ=0.6，tgφ=1.33Pjs=0.65×6×8=31.2kWQjs=Pjs×tgφ=31.2×1.33=41.5kvar4.2.15砂轮切割机Kx=0.65，Cosφ=0.6，tgφ=1.33Pjs=0.65×2.2×2=2.86kWQjs=Pjs×tgφ=2.86×1.33=3.8kvar84.2.17砂浆土搅拌机Kx=0.6，Cosφ=0.85，tgφ=0.62Pjs=0.6×7.5×8=36kWQjs=Pjs×tgφ=36×0.62=22.32kvar4.2.18高压汞灯Kx=0.6，Cosφ=0.7，tgφ=1.02Pjs=0.6×6×1.1=3.96kWQjs=Pjs×tgφ=3.96×1.02=4.04kvar4.2.19碘钨灯Kx=0.3，Cosφ=0.7，tgφ=1.02Pjs=0.3×5×1=1.5kWQjs=Pjs×tgφ=1.5×1.02=1.53kvar4.2.20空调Kx=0.9，Cosφ=0.9，tgφ=0.48Pjs=0.9×1.5×80=108kWQjs=Pjs×tgφ=108×0.48=51.84kvar4.2.21打印机设备Kx=0.9，Cosφ=0.9，tgφ=0.48Pjs=0.9×0.8×2=1.44kWQjs=Pjs×tgφ=1.44×0.48=0.69kvar4.2.22食堂电器Kx=0.9，Cosφ=1，tgφ=0Pjs=0.9×1.8×25=45kWQjs=Pjs×tgφ=45×0=0kvar94.2.23照明灯Kx=0.75，Cosφ=0.85，tgφ=0.62Pjs=0.75×0.05×100=3.75kWQjs=Pjs×tgφ=3.75×0.62=2.33kvar总的有功功率Pjs总=Kx×ΣPjs=0.95×(55.25+54+49.5+12.37+9.9+11.44+11.7+7.8+5.2+18+24.75+3.6+1.32+31.2+2.86+36+14.4+6+108+1.44+45+3.75)=487.81kW总的无功功率Qjs总=Kx×ΣQjs=0.95×(73.48+71.82+65.84+12.62+10.1+11.67+11.93+7.96+5.3+13.5+18.56+3.67+1.35+41.5+3.8+22.32+14.69+6.12+51.84+0.69+2.33)=428.53kvar总的视在功率Sjs总=(Pjs总2+Qjs总2)1/2=(487.812+428.532)1/2=649.31kVASjs经验=0.75×649.31=487kVA总的计算电流计算Ijs总=Sjs总/(1.732×Ue)=649.31/(1.732×0.38)=986.52AIjs经验=0.6Ijs总=0.6×986.52=591A5.线径计算选择、设备选型5.1线径计算选择5.1.1塔吊开关箱至塔吊导线截面及开关箱内电气设备选择(开关箱以下用电器启动后需要系数取1):计算电流Kx=