临时用电计算书及施工方案.docx

1、临时用电计算书及施工方案施工临时用电方案计算书工程建设地点 ； 地上4层； 地下1层；建筑高度：19.5m；标准层层高：4.5m ；总建筑面积：13417.73平方米；总工期：0天。一、编制依据低压配电设计规范GB50054-95中国建筑工业出版社建筑工程施工现场供电安全规范GB50194-93中国建筑工业出版社通用用电设备配电设计规范GB50055-93中国建筑工业出版社供配电系统设计规范GB50052-95中国建筑工业出版社施工现场临时用电安全技术规范JGJ46-2005中国建筑工业出版社建筑施工安全检查标准JGJ59-99二、施工条件施工现场用电量统计表:-序号 机具名称 型号 安装功率

2、(kW) 数量 合计功率(kW)1 塔式起重机 QT40（TQ2-6） 48 1 48 2 钢筋调直机 GT6/8 5.5 1 5.5 3 真空吸水泵 HZX-40 4 1 4 4 真空吸水泵 HZX-40 4 1 4 5 真空吸水泵 HZX-40 4 1 4 6 真空吸水泵 HZX-40 4 1 4 7 真空吸水泵 HZX-40 4 1 4 8 塔式起重机 QT40（TQ2-6） 48 1 48 9 钢筋切断机 QJ40-1 5.5 1 5.5 10 钢筋切断机 QJ32-1 3 1 3 11 直流电焊机 AX1-165(AB-165) 6 1 6 12 交流电焊机 BX3-120-1 9

3、1 9 13 真空吸水泵 HZX-40 4 1 4 14 真空吸水泵 HZX-40 4 1 4 15 真空吸水泵 HZX-40 4 1 4 16 真空吸水泵 HZX-40 4 1 4 17 真空吸水泵 HZX-40 4 1 4 18 真空吸水泵 HZX-40 4 1 4 19 插入式振动器 ZX25 0.8 1 0.8 20 插入式振动器 ZX25 0.8 1 0.8 21 木工圆锯 MJ104 3 1 3 22 荧光灯 0.2 1 0.2 23 荧光灯 0.2 1 0.2 24 荧光灯 0.2 1 0.2 25 荧光灯 0.2 1 0.2 26 荧光灯 0.2 1 0.2 27 荧光灯 0.

4、2 1 0.2 28 荧光灯 0.2 1 0.2 29 荧光灯 0.2 1 0.2 30 荧光灯 0.2 1 0.2 31 荧光灯 0.2 1 0.2 -三、设计内容和步骤1、现场勘探及初步设计:(1)本工程所在施工现场范围内施工前无各种埋地管线。(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。(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，干线采用直接埋地敷设，用电器导线采用直接埋地敷设。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，三级防护。(4)按照JGJ46-2005规定制定施工组织设计，接地电阻R4。2、确定用电负

5、荷:(1)、塔式起重机Kx = 0.85 Cos = 0.6 tg = 1.33将Jc =40%统一换算到Jc1 =25%的额定容量Pn = 48kWPe = n(Jc/Jc1)1/2Pn = 1(0.4/0.25)1/248 = 60.72 kWPjs = KxPe =0.8560.72 = 51.61kWQjs = Pjs tg=51.611.33 = 68.81 kvar(2)、钢筋调直机Kx = 0.65 Cos = 0.7 tg = 1.02Pjs = 0.655.5 = 3.575 kWQjs = Pjs tg=3.581.02 = 3.65 kvar(3)、真空吸水泵Kx = 0

6、.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.75 = 2.25 kvar(4)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.75 = 2.25 kvar(5)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.75 = 2.25 kvar(6)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQ

7、js = Pjs tg=30.75 = 2.25 kvar(7)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.75 = 2.25 kvar(8)、塔式起重机Kx = 0.85 Cos = 0.6 tg = 1.33将Jc =40%统一换算到Jc1 =25%的额定容量Pn = 48kWPe = n(Jc/Jc1)1/2Pn = 1(0.4/0.25)1/248 = 60.72 kWPjs = KxPe =0.8560.72 = 51.61kWQjs = Pjs tg=51.611.33 = 68.81 k

8、var(9)、钢筋切断机Kx = 0.65 Cos = 0.7 tg = 1.02Pjs = 0.655.5 = 3.575 kWQjs = Pjs tg=3.581.02 = 3.65 kvar(10)、钢筋切断机Kx = 0.65 Cos = 0.7 tg = 1.02Pjs = 0.653 = 1.95 kWQjs = Pjs tg=1.951.02 = 1.99 kvar(11)、直流电焊机Kx = 0.7 Cos = 0.6 tg = 1.33将Jc =50%统一换算到Jc1 =100%的额定容量Pn = 6kWPe = n(Jc/Jc1)1/2Pn = 1(0.5/1)1/26 =

9、 4.24 kWPjs = KxPe =0.74.24 = 2.97kWQjs = Pjs tg=2.971.33 = 3.96 kvar(12)、交流电焊机Kx = 0.5 Cos = 0.4 tg = 2.29将Jc =50%统一换算到Jc1 =100%的额定容量Pn = Sn Cos = 90.4=3.6kWPe = n(Jc/Jc1)1/2Pn = 1(0.5/1)1/23.6 = 2.55 kWPjs = KxPe =0.52.55 = 1.27kWQjs = Pjs tg=1.272.29 = 2.92 kvar(13)、真空吸水泵Kx = 0.75 Cos = 0.8 tg =

10、0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.75 = 2.25 kvar(14)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.75 = 2.25 kvar(15)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.75 = 2.25 kvar(16)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.7

11、5 = 2.25 kvar(17)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.75 = 2.25 kvar(18)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.754 = 3 kWQjs = Pjs tg=30.75 = 2.25 kvar(19)、插入式振动器Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.30.8 = 0.24 kWQjs = Pjs tg=0.241.02 = 0.24 kvar(20)、插入式振动器Kx = 0.3

12、 Cos = 0.7 tg = 1.02Pjs = 0.30.8 = 0.24 kWQjs = Pjs tg=0.241.02 = 0.24 kvar(21)、木工圆锯Kx = 0.65 Cos = 0.6 tg = 1.33Pjs = 0.653 = 1.95 kWQjs = Pjs tg=1.951.33 = 2.6 kvar(22)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs = 0.20.21.2 = 0.048 kWQjs = Pjs tg=0.050.75 = 0.04 kvar(23)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs

13、 = 0.20.21.2 = 0.048 kWQjs = Pjs tg=0.050.75 = 0.04 kvar(24)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs = 0.20.21.2 = 0.048 kWQjs = Pjs tg=0.050.75 = 0.04 kvar(25)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs = 0.20.21.2 = 0.048 kWQjs = Pjs tg=0.050.75 = 0.04 kvar(26)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs = 0.20.21.2 =

14、0.048 kWQjs = Pjs tg=0.050.75 = 0.04 kvar(27)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs = 0.20.21.2 = 0.048 kWQjs = Pjs tg=0.050.75 = 0.04 kvar(28)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs = 0.20.21.2 = 0.048 kWQjs = Pjs tg=0.050.75 = 0.04 kvar(29)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs = 0.20.21.2 = 0.048 kWQjs = P

15、js tg=0.050.75 = 0.04 kvar(30)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs = 0.20.21.2 = 0.048 kWQjs = Pjs tg=0.050.75 = 0.04 kvar(31)、荧光灯Kx = 0.2 Cos = 0.8 tg = 0.75Pjs = 0.20.21.2 = 0.048 kWQjs = Pjs tg=0.050.75 = 0.04 kvar(32)总的计算负荷计算，总箱同期系数取 Kx = 0.9总的有功功率Pjs = KxPjs = 0.9(51.61+3.58+3+3+3+3+3+51.61+3.58

16、+1.95+2.97+1.27+3+3+3+3+3+3+0.24+0.24+1.95+0.05+0.05+0.05+0.05+0.05+0.05+0.05+0.05+0.05+0.05) = 137.222 kW总的无功功率Qjs = KxQjs =0.9(68.81+3.65+2.25+2.25+2.25+2.25+2.25+68.81+3.65+1.99+3.96+2.92+2.25+2.25+2.25+2.25+2.25+2.25+0.24+0.24+2.6+0.04+0.04+0.04+0.04+0.04+0.04+0.04+0.04+0.04+0.04) = 163.784 kvar

17、总的视在功率Sjs = ( Pjs2+Qjs2 )1/2 = (137.2222+163.7842)1/2 = 213.67 kVA总的计算电流计算Ijs = Sjs/(1.732Ue) = 213.67/(1.7320.38) = 324.648 A3、1号干线线路上导线截面及分配箱、开关箱内电气设备选择:在选择前应对照平面图和系统图先由用电设备至开关箱计算，再由开关箱至分配箱计算，选择导线及开关设备。分配箱至开关箱，开关箱至用电设备的导线敷设采用铜橡皮绝缘导线。(1)、塔式起重机开关箱至塔式起重机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）:i)计算电流Kx = 1

18、 Cos = 0.6 tg = 1.33Ijs = Kx Pe /(1.732Ue Cos) = 160.72/(1.7320.380.6) = 153.75Aii)选择导线选择XV-350+225 ，直接埋地时其安全载流量为178A。iii)选择电气设备选择开关箱内隔离开关为DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A，熔断器RT0-200其最大熔体电流为 IRD = 200A，可根据实际电流的2.5倍选择额定电流较小的熔丝，漏电保护器为 ZBM1-800/630。(2)、钢筋调直机开关箱至钢筋调直机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）:i)

19、计算电流Kx = 1 Cos = 0.7 tg = 1.02Ijs = Kx Pe /(1.732Ue Cos) = 15.5/(1.7320.380.7) = 11.94Aii)选择导线选择XV-310+210 ，直接埋地时其安全载流量为71A。iii)选择电气设备选择开关箱内隔离开关为HR5，熔断器RT0-50其最大熔体电流为 IRD = 50A，可根据实际电流的2.5倍选择额定电流较小的熔丝，漏电保护器为 ZBM1-800/630。(3)、真空吸水泵开关箱至真空吸水泵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）:i)计算电流Kx = 1 Cos = 0.8 tg

20、= 0.75Ijs = Kx Pe /(1.732Ue Cos) = 14/(1.7320.380.8) = 7.6Aii)选择导线选择XV-310+210 ，直接埋地时其安全载流量为71A。iii)选择电气设备选择开关箱内隔离开关为DZ5-20/3 ，其脱扣器整定电流值为Ir = 16A，熔断器RT0-50其最大熔体电流为 IRD = 50A，可根据实际电流的2.5倍选择额定电流较小的熔丝，漏电保护器为 ZBM1-800/630。(4)、真空吸水泵开关箱至真空吸水泵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）:i)计算电流Kx = 1 Cos = 0.8 tg = 0

21、.75Ijs = Kx Pe /(1.732Ue Cos) = 14/(1.7320.380.8) = 7.6Aii)选择导线选择XV-310+210 ，直接埋地时其安全载流量为71A。iii)选择电气设备选择开关箱内隔离开关为DZ5-20/3 ，其脱扣器整定电流值为Ir = 16A，熔断器RT0-50其最大熔体电流为 IRD = 50A，可根据实际电流的2.5倍选择额定电流较小的熔丝，漏电保护器为 ZBM1-800/630。(5)、真空吸水泵开关箱至真空吸水泵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）:i)计算电流Kx = 1 Cos = 0.8 tg = 0.75

22、Ijs = Kx Pe /(1.732Ue Cos) = 14/(1.7320.380.8) = 7.6Aii)选择导线选择XV-370+235 ，直接埋地时其安全载流量为213A。iii)选择电气设备选择开关箱内隔离开关为DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A，熔断器RT0-50其最大熔体电流为 IRD = 50A，可根据实际电流的2.5倍选择额定电流较小的熔丝，漏电保护器为 ZBM1-800/630。(6)、真空吸水泵开关箱至真空吸水泵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）:i)计算电流Kx = 1 Cos = 0.8 tg = 0.7

23、5Ijs = Kx Pe /(1.732Ue Cos) = 14/(1.7320.380.8) = 7.6Aii)选择导线选择XV-370+235 ，直接埋地时其安全载流量为213A。iii)选择电气设备选择开关箱内隔离开关为DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A，熔断器RT0-200其最大熔体电流为 IRD = 200A，可根据实际电流的2.5倍选择额定电流较小的熔丝，漏电保护器为 ZBM1-800/630。(7)、真空吸水泵开关箱至真空吸水泵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）:i)计算电流Kx = 1 Cos = 0.8 tg =

24、0.75Ijs = Kx Pe /(1.732Ue Cos) = 14/(1.7320.380.8) = 7.6Aii)选择导线选择XV-370+235 ，直接埋地时其安全载流量为213A。iii)选择电气设备选择开关箱内隔离开关为DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A，熔断器RT0-200其最大熔体电流为 IRD = 200A，可根据实际电流的2.5倍选择额定电流较小的熔丝，漏电保护器为 ZBM1-800/630。(8)、1号动力分箱至第1组电机(塔式起重机、钢筋调直机、真空吸水泵、真空吸水泵、真空吸水泵、真空吸水泵、真空吸水泵)的开关箱的导线截面及分配箱内开关的选择

25、i) 计算电流塔式起重机Kx = 0.85 Cos= 0.6 tg= 1.33Ijs = Kx Pe 台数/(1.732Ue Cos) = 0.8560.721/(1.7320.380.6) = 130.69A钢筋调直机Kx = 0.65 Cos= 0.7 tg= 1.02Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.655.51/(1.7320.380.7) = 7.76A真空吸水泵Kx = 0.75 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.7541/(1.7320.380.8) = 5.7A真空吸水泵Kx = 0.

26、75 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.7541/(1.7320.380.8) = 5.7A真空吸水泵Kx = 0.75 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.7541/(1.7320.380.8) = 5.7A真空吸水泵Kx = 0.75 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.7541/(1.7320.380.8) = 5.7A真空吸水泵Kx = 0.75 Cos= 0.8 tg= 0.75Ijs= Kx Pe

27、 台数/(1.732Ue Cos) = 0.7541/(1.7320.380.8) = 5.7AIjs(1组电机 )= 166.94A该组中最大的开关箱电流Ijs=153.75A由于该组下有多个开关箱，所以最大电流需要乘以1.1的系数两者中取大值Ijs=166.941.1=183.63Aii)选择导线选择XV-370+235 ，直接埋地时其安全载流量为213A。iii)选择电气设备选择分配箱内开关为DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A，漏电保护器为 ZBM1-800/630。(9)1号动力分箱进线及进线开关的选择i)计算电流Kx = 0.7，Cos = 0.9Ijs

28、= KxPe /(1.732Ue Cos) = 0.773.5/(1.7320.380.9) = 86.86A该分箱下最大组线电流Ijs=183.63A两者中取大值Ijs=183.63Aii)选择导线选择XV-370+235 ，直接埋地时其安全载流量为213A。iii)选择电气设备选择分配箱内开关为DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A，熔断器RT0-200其最大熔体电流为 IRD = 200A，可根据实际电流的2.5倍选择额定电流较小的熔丝，漏电保护器为 ZBM1-800/630。(10)1号干线导线截面及出线开关的选择i) 计算电流：按导线安全载流量：Kx = 0.

29、7 ，Cos = 0.9Ijs = KxPe/(1.732UeCos) = 0.773.5/(1.7320.380.9) = 86.86 A该干线下最大的分配箱电流Ijs=183.63A选择的电流Ijs=183.63A按允许电压降：S = Kx(PL)/CU = 0.73675/(775) = 6.682 mm2选择XV-370+235 ，直接埋地时其安全载流量为213A。ii)选择出线开关1号干线出线开关选择DZ10-250/3 ，其脱扣器整定电流值为Ir = 200A，熔断器RT0-200其最大熔体电流为 IRD = 200A，可根据实际电流的2.5倍选择额定电流较小的熔丝，漏电保护器为 ZBM1-800/630。4、2号干线线路上导线截面及分配箱、开关箱内电气设备选择:在选择前应对照平面图和系统图先由用电设备至开关箱计算，再由开关箱至分配箱计算，选择导线及开关设备。分配箱至开关箱，开关箱至用电设备的导线