施工临时用电方案计算1.doc

施工临时用电方案计算书品茗软件大厦工程； 工程建设地点:杭州市文二路教工路口；属于结构； 地上0层； 地下0层；建筑高度：0m；标准层层高：0m ；总建筑面积：0平方米；总工期：0天。本工程由某某房开公司投资建设，某某设计院设计，某某勘察单位地质勘察，某某监理公司监理，某某施工单位组织施工；由章某某担任项目经理，李某某担任技术负责人。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(kW) 数量 合计功率(kW)1 塔式起重机 TQ60/80 40 1 40 2 插入式振动器 ZX25 0.8 3 2.4 3 钢筋调直机 GT4/14 4 1 4 4 直流电焊机 AX1-165(AB-165) 6 1 6 5 木工圆锯 MJ104 3 1 3 6 套丝切管机 TQ-3 1 1 1 7 灰浆搅拌机 UJ325 3 1 3 8 施工电梯 SCD200 30 1 30 9 碘钨灯 0.5 2 1 10 塔式起重机 TQ60/80 55.5 1 55.5 11 插入式振动器 ZX35 0.8 3 2.4 12 钢筋调直机 GT4/14 4 3 12 13 钢筋切断机 QJ32-1 3 2 6 14 钢筋弯曲机 GW40 3 3 9 15 直流电焊机 AX1-165(AB-165) 6 1 6 16 木工圆锯 MJ104 3 1 3 17 灰浆搅拌机 UJ100 2.2 1 2.2 18 施工电梯 SCD200 30 1 30 19 碘钨灯 0.5 2 1 20 塔式起重机 TQ60/80 40 1 40 21 插入式振动器 ZX35 0.8 2 1.6 22 灰浆搅拌机 UJ325 3 1 3 23 直流电焊机 AX1-165(AB-165) 6 1 6 24 木工圆锯 MJ104 3 1 3 25 灰浆泵 UB3 4 1 4 26 套丝切管机 TQ-3 1 1 1 27 施工电梯 SCD200 30 1 30 28 碘钨灯 0.5 2 1 29 塔式起重机 TQ60/80 40 1 40 30 插入式振动器 ZX35 0.8 1 0.8 31 直流电焊机 AX1-165(AB-165) 6 1 6 32 施工电梯 SCD200 30 1 30 33 木工圆锯 MJ104 3 1 3 34 电动液压弯管机 WYQ 1.1 1 1.1 35 钢筋弯曲机 GW40 3 1 3 36 碘钨灯 0.5 2 1 37 塔式起重机 TQ60/80 40 1 40 38 施工电梯 SCD200 11 1 11 39 插入式振动器 ZX25 0.8 1 0.8 40 灰浆搅拌机 UJ325 3 1 3 41 木工圆锯 MJ104 3 1 3 42 直流电焊机 AX1-165(AB-165) 6 1 6 43 白炽灯 0.5 30 15 44 碘钨灯 0.2 20 4 -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，总箱进线采用导线空气明敷/架空线路敷设，干线采用空气明敷/架空线路敷设，用电器导线采用空气明敷/架空线路敷设。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、确定用电负荷:(1)、塔式起重机Kx = 0.5 Cos = 0.8 tg = 0.75将Jc =40%统一换算到Jc1 =25%的额定容量Pn = 40kWPe = n(Jc/Jc1)1/2Pn = 1(0.4/0.25)1/240 = 50.6 kWPjs = KxPe =0.550.6 = 25.3kWQjs = Pjs tg=25.30.75 = 18.97 kvar(2)、插入式振动器Kx = 0.3 Cos = 0.8 tg = 0.75Pjs = 0.32.4 = 0.72 kWQjs = Pjs tg=0.720.75 = 0.54 kvar(3)、钢筋调直机Kx = 0.4 Cos = 0.7 tg = 1.02Pjs = 0.44 = 1.6 kWQjs = Pjs tg=1.61.02 = 1.63 kvar(4)、直流电焊机Kx = 0.5 Cos = 0.8 tg = 0.75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 = 4.24 kWPjs = KxPe =0.54.24 = 2.12kWQjs = Pjs tg=2.120.75 = 1.59 kvar(5)、木工圆锯Kx = 0.4 Cos = 0.8 tg = 0.75Pjs = 0.43 = 1.2 kWQjs = Pjs tg=1.20.75 = 0.9 kvar(6)、套丝切管机Kx = 0.3 Cos = 0.8 tg = 0.75Pjs = 0.31 = 0.3 kWQjs = Pjs tg=0.30.75 = 0.22 kvar(7)、灰浆搅拌机Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.33 = 0.9 kWQjs = Pjs tg=0.91.02 = 0.92 kvar(8)、施工电梯Kx = 0.5 Cos = 0.8 tg = 0.75Pjs = 0.530 = 15 kWQjs = Pjs tg=150.75 = 11.25 kvar(9)、碘钨灯Kx = 0.6 Cos = 0.6 tg = 1.33Pjs = 0.611 = 0.6 kWQjs = Pjs tg=0.61.33 = 0.8 kvar(10)、塔式起重机Kx = 0.5 Cos = 0.8 tg = 0.75将Jc =40%统一换算到Jc1 =25%的额定容量Pn = 55.5kWPe = n(Jc/Jc1)1/2Pn = 1(0.4/0.25)1/255.5 = 70.2 kWPjs = KxPe =0.570.2 = 35.1kWQjs = Pjs tg=35.10.75 = 26.33 kvar(11)、插入式振动器Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.32.4 = 0.72 kWQjs = Pjs tg=0.721.02 = 0.73 kvar(12)、钢筋调直机Kx = 0.4 Cos = 0.8 tg = 0.75Pjs = 0.412 = 4.8 kWQjs = Pjs tg=4.80.75 = 3.6 kvar(13)、钢筋切断机Kx = 0.4 Cos = 0.7 tg = 1.02Pjs = 0.46 = 2.4 kWQjs = Pjs tg=2.41.02 = 2.45 kvar(14)、钢筋弯曲机Kx = 0.4 Cos = 0.8 tg = 0.75Pjs = 0.49 = 3.6 kWQjs = Pjs tg=3.60.75 = 2.7 kvar(15)、直流电焊机Kx = 0.5 Cos = 0.8 tg = 0.75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 = 4.24 kWPjs = KxPe =0.54.24 = 2.12kWQjs = Pjs tg=2.120.75 = 1.59 kvar(16)、木工圆锯Kx = 0.4 Cos = 0.8 tg = 0.75Pjs = 0.43 = 1.2 kWQjs = Pjs tg=1.20.75 = 0.9 kvar(17)、灰浆搅拌机Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.32.2 = 0.66 kWQjs = Pjs tg=0.661.02 = 0.67 kvar(18)、施工电梯Kx = 0.5 Cos = 0.8 tg = 0.75Pjs = 0.530 = 15 kWQjs = Pjs tg=150.75 = 11.25 kvar(19)、碘钨灯Kx = 0.6 Cos = 0.6 tg = 1.33Pjs = 0.611 = 0.6 kWQjs = Pjs tg=0.61.33 = 0.8 kvar(20)、塔式起重机Kx = 0.5 Cos = 0.8 tg = 0.75将Jc =40%统一换算到Jc1 =25%的额定容量Pn = 40kWPe = n(Jc/Jc1)1/2Pn = 1(0.4/0.25)1/240 = 50.6 kWPjs = KxPe =0.550.6 = 25.3kWQjs = Pjs tg=25.30.75 = 18.97 kvar(21)、插入式振动器Kx = 0.3 Cos = 0.8 tg = 0.75Pjs = 0.31.6 = 0.48 kWQjs = Pjs tg=0.480.75 = 0.36 kvar(22)、灰浆搅拌机Kx = 0.5 Cos = 0.75 tg = 0.88Pjs = 0.53 = 1.5 kWQjs = Pjs tg=1.50.88 = 1.32 kvar(23)、直流电焊机Kx = 0.5 Cos = 0.8 tg = 0.75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 = 4.24 kWPjs = KxPe =0.54.24 = 2.12kWQjs = Pjs tg=2.120.75 = 1.59 kvar(24)、木工圆锯Kx = 0.4 Cos = 0.8 tg = 0.75Pjs = 0.43 = 1.2 kWQjs = Pjs tg=1.20.75 = 0.9 kvar(25)、灰浆泵Kx = 0.5 Cos = 0.8 tg = 0.75Pjs = 0.54 = 2 kWQjs = Pjs tg=20.75 = 1.5 kvar(26)、套丝切管机Kx = 0.3 Cos = 0.8 tg = 0.75Pjs = 0.31 = 0.3 kWQjs = Pjs tg=0.30.75 = 0.22 kvar(27)、施工电梯Kx = 0.5 Cos = 0.8 tg = 0.75Pjs = 0.530 = 15 kWQjs = Pjs tg=150.75 = 11.25 kvar(28)、碘钨灯Kx = 0.6 Cos = 0.6 tg = 1.33Pjs = 0.611 = 0.6 kWQjs = Pjs tg=0.61.33 = 0.8 kvar(29)、塔式起重机Kx = 0.5 Cos = 0.8 tg = 0.75将Jc =40%统一换算到Jc1 =25%的额定容量Pn = 40kWPe = n(Jc/Jc1)1/2Pn = 1(0.4/0.25)1/240 = 50.6 kWPjs = KxPe =0.550.6 = 25.3kWQjs = Pjs tg=25.30.75 = 18.97 kvar(30)、插入式振动器Kx = 0.3 Cos = 0.8 tg = 0.75Pjs = 0.30.8 = 0.24 kWQjs = Pjs tg=0.240.75 = 0.18 kvar(31)、直流电焊机Kx = 0.4 Cos = 0.8 tg = 0.75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 = 4.24 kWPjs = KxPe =0.44.24 = 1.7kWQjs = Pjs tg=1.70.75 = 1.27 kvar(32)、施工电梯Kx = 0.5 Cos = 0.8 tg = 0.75Pjs = 0.530 = 15 kWQjs = Pjs tg=150.75 = 11.25 kvar(33)、木工圆锯Kx = 0.4 Cos = 0.8 tg = 0.75Pjs = 0.43 = 1.2 kWQjs = Pjs tg=1.20.75 = 0.9 kvar(34)、电动液压弯管机Kx = 0.3 Cos = 0.8 tg = 0.75Pjs = 0.31.1 = 0.33 kWQjs = Pjs tg=0.330.75 = 0.25 kvar(35)、钢筋弯曲机Kx = 0.4 Cos = 0.8 tg = 0.75Pjs = 0.43 = 1.2 kWQjs = Pjs tg=1.20.75 = 0.9 kvar(36)、碘钨灯Kx = 0.6 Cos = 0.6 tg = 1.33Pjs = 0.611 = 0.6 kWQjs = Pjs tg=0.61.33 = 0.8 kvar(37)、塔式起重机Kx = 0.5 Cos = 0.8 tg = 0.75将Jc =40%统一换算到Jc1 =25%的额定容量Pn = 40kWPe = n(Jc/Jc1)1/2Pn = 1(0.4/0.25)1/240 = 50.6 kWPjs = KxPe =0.550.6 = 25.3kWQjs = Pjs tg=25.30.75 = 18.97 kvar(38)、施工电梯Kx = 0.5 Cos = 0.8 tg = 0.75Pjs = 0.511 = 5.5 kWQjs = Pjs tg=5.50.75 = 4.12 kvar(39)、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(40)、灰浆搅拌机Kx = 0.4 Cos = 0.7 tg = 1.02Pjs = 0.43 = 1.2 kWQjs = Pjs tg=1.21.02 = 1.22 kvar(41)、木工圆锯Kx = 0.4 Cos = 0.6 tg = 1.33Pjs = 0.43 = 1.2 kWQjs = Pjs tg=1.21.33 = 1.6 kvar(42)、直流电焊机Kx = 0.5 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 = 4.24 kWPjs = KxPe =0.54.24 = 2.12kWQjs = Pjs tg=2.121.33 = 2.83 kvar(43)、白炽灯Kx = 0.5 Cos = 0.9 tg = 0.48Pjs = 0.5151 = 7.5 kWQjs = Pjs tg=7.50.48 = 3.63 kvar(44)、碘钨灯Kx = 0.6 Cos = 0.9 tg = 0.48Pjs = 0.641 = 2.4 kWQjs = Pjs tg=2.40.48 = 1.16 kvar(45)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(25.3+0.72+1.6+2.12+1.2+0.3+0.9+15+0.6+35.1+0.72+4.8+2.4+3.6+2.12+1.2+0.66+15+0.6+25.3+0.48+1.5+2.12+1.2+2+0.3+15+0.6+25.3+0.24+1.7+15+1.2+0.33+1.2+0.6+25.3+5.5+0.24+1.2+1.2+2.12+7.5+2.4) = 228.121 kW总的无功功率Qjs = KxQjs =0.9(18.97+0.54+1.63+1.59+0.9+0.22+0.92+11.25+0.8+26.33+0.73+3.6+2.45+2.7+1.59+0.9+0.67+11.25+0.8+18.97+0.36+1.32+1.59+0.9+1.5+0.22+11.25+0.8+18.97+0.18+1.27+11.25+0.9+0.25+0.9+0.8+18.97+4.12+0.24+1.22+1.6+2.83+3.63+1.16) = 173.782 kvar总的视在功率Sjs = ( Pjs2+Qjs2 )1/2 = (228.1212+173.7822)1/2 = 286.774 kVA总的计算电流计算Ijs = Sjs/(1.732Ue) = 286.774/(1.7320.38) = 435.721 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空气明敷/架空线路，室外架空铜导线按机械强度的最小截面为10mm2。(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 Cos = 0.8 tg = 0.75Ijs = Kx Pe /(1.732Ue Cos) = 150.6/(1.7320.380.8) = 96.09Aii)选择导线选择XV-495 ，空气明敷/架空线路时其安全载流量为234A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。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，漏电保护器为 DZ10L-250/3。(2)、插入式振动器开关箱至插入式振动器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 = 0.75Ijs = Kx Pe /(1.732Ue Cos) = 10.8/(1.7320.380.8) = 1.52Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备由于开关控制3台用电器，开关的电流为Ir=1.523.00(台数)= 4.56 A。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，漏电保护器为 DZ15L-100/30。(3)、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)计算电流Kx = 1 Cos = 0.7 tg = 1.02Ijs = Kx Pe /(1.732Ue Cos) = 14/(1.7320.380.7) = 8.68Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内隔离开关为Hk1-15/3，漏电保护器为 DZ15L-100/30。(4)、直流电焊机开关箱至直流电焊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 Cos = 0.8 tg = 0.75Ijs = Kx Pe /(Ue Cos) = 14.24/(0.380.8) = 13.96Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内隔离开关为DZ5-50/3 ，其脱扣器整定电流值为Ir = 40A，漏电保护器为 DZ15L-100/30。(5)、木工圆锯开关箱至木工圆锯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 = 0.75Ijs = Kx Pe /(1.732Ue Cos) = 13/(1.7320.380.8) = 5.7Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内隔离开关为Hk1-15/3，漏电保护器为 DZ15L-100/30。(6)、套丝切管机开关箱至套丝切管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 Cos = 0.8 tg = 0.75Ijs = Kx Pe /(1.732Ue Cos) = 11/(1.7320.380.8) = 1.9Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内隔离开关为Hk1-15/3，漏电保护器为 DZ15L-100/30。(7)、灰浆搅拌机开关箱至灰浆搅拌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 Cos = 0.7 tg = 1.02Ijs = Kx Pe /(1.732Ue Cos) = 13/(1.7320.380.7) = 6.51Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备选择开关箱内隔离开关为Hk1-30/3，漏电保护器为 DZ15L-100/30。(8)、施工电梯开关箱至施工电梯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 = 0.75Ijs = Kx Pe /(1.732Ue Cos) = 130/(1.7320.380.8) = 56.98Aii)选择导线选择XV-435 ，空气明敷/架空线路时其安全载流量为124A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。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，漏电保护器为 DZ10L-250/3。(9)、碘钨灯开关箱至碘钨灯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 = 0.6 tg = 1.33Ijs = Kx Pe /(Ue Cos) = 10.5/(0.220.6) = 3.79Aii)选择导线选择XV-495 ，空气明敷/架空线路时其安全载流量为234A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备由于开关控制2台用电器，开关的电流为Ir=3.792.00(台数)= 7.58 A。选择开关箱内隔离开关为DZ10-600/3 ，其脱扣器整定电流值为Ir = 480A，漏电保护器为 DZ10L-250/3。(10)、1号动力分箱至第1组电机(塔式起重机、插入式振动器、钢筋调直机、直流电焊机、木工圆锯、套丝切管机、灰浆搅拌机、施工电梯)的开关箱的导线截面及分配箱内开关的选择i) 计算电流塔式起重机Kx = 0.5 Cos= 0.8 tg= 0.75Ijs = Kx Pe 台数/(1.732Ue Cos) = 0.550.61/(1.7320.380.8) = 48.05A插入式振动器Kx = 0.3 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.30.83/(1.7320.380.8) = 1.37A钢筋调直机Kx = 0.4 Cos= 0.7 tg= 1.02Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.441/(1.7320.380.7) = 3.47A直流电焊机Kx = 0.5 Cos= 0.8 tg= 0.75Ijs = Kx Pe 台数/(Ue Cos) = 0.54.241/(0.380.8) = 6.98A木工圆锯Kx = 0.4 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.431/(1.7320.380.8) = 2.28A套丝切管机Kx = 0.3 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.311/(1.7320.380.8) = 0.57A灰浆搅拌机Kx = 0.3 Cos= 0.7 tg= 1.02Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.331/(1.7320.380.7) = 1.95A施工电梯Kx = 0.5 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.5301/(1.7320.380.8) = 28.49AIjs(1组电机 )= 93.16A该组中最大的开关箱电流Ijs=96.09A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=96.091.1=105.70Aii)选择导线选择XV-495 ，空气明敷/架空线路时其安全载流量为234A。iii)选择电气设备选择分配箱内开关为DZ10-600/3 ，其脱扣器整定电流值为Ir = 480A，漏电保护器为 DZ10L-250/3。(11)、7号照明分箱至第1组照明灯具(碘钨灯)的开关箱的导线截面及分配箱内开关的选择i) 计算电流碘钨灯Kx = 0.6 Cos= 0.6 tg= 1.33Ijs = Kx Pe 台数/(Ue Cos) = 0.60.52/(0.220.6) = 4.55AIjs(1组灯具 )= 4.55A该组中最大的开关箱电流Ijs=7.58A两者中取大值Ijs=7.58Aii)选择导线选择XV-495 ，空气明敷/架空线路时其安全载流量为234A。iii)选择电气设备选择分配箱内开关为DZ10-600/3 ，其脱扣器整定电流值为Ir = 480A，漏电保护器为 DZ10L-250/3。(12)1号动力分箱进线及进线开关的选择i)计算电流Kx = 0.5，Cos = 0.9Ijs = KxPe /(1.732Ue Cos) = 0.587.8/(1.7320.380.9) = 74.11A该分箱下最大组线电流Ijs=105.70A两者中取大值Ijs=105.70Aii)选择导线选择XV-4120 ，空气明敷/架空线路时其安全载流量为269A。iii)选择电气设备选择分配箱内开关为DZ10-600/3 ，其脱扣器整定电流值为Ir = 480A。(13)7号照明分箱进线及进线开关的选择i)计算电流Kx = 0.7，Cos = 0.9Ijs = KxPe /(1.732Ue Cos) = 0.70.5/(1.7320.380.9) = 0.59A该分箱下最大组线电流Ijs=7.58A两者中取大值Ijs=7.58Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。iii)选择电气设备选择分配箱内开关为DZ5-20/3 ，其脱扣器整定电流值为Ir = 16A，漏电保护器为 DZ15L-100/30。(14)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 = 0.7 ，Cos = 0.9Ijs = KxPe/(1.732UeCos) = 0.788.3/(1.7320.380.9) = 104.35 A该干线下最大的分配箱电流Ijs=105.70A由于该干线下有多个分配箱，所以最大电流需要乘以1.1的系数选择的电流Ijs=105.701.1=116.27A按允许电压降：S = Kx(PL)/CU = 0.7176.1/(775) = 0.32 mm2选择XV-435 ，空气明敷/架空线路时其安全载流量为124A。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，漏电保护器为 DZ10L-250/3。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敷设采用铜橡皮绝缘导线空气明敷/架空线路，室外架空铜导线按机械强度的最小截面为10mm2。(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 Cos = 0.8 tg = 0.75Ijs = Kx Pe /(1.732Ue Cos) = 170.2/(1.7320.380.8) = 133.33Aii)选择导线选择XV-450 ，空气明敷/架空线路时其安全载流量为158A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。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，漏电保护器为 DZ10L-250/3。(2)、插入式振动器开关箱至插入式振动器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 = 0.7 tg = 1.02Ijs = Kx Pe /(1.732Ue Cos) = 10.8/(1.7320.380.7) = 1.74Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备由于开关控制3台用电器，开关的电流为Ir=1.743.00(台数)= 5.21 A。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，漏电保护器为 DZ15L-100/30。(3)、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)计算电流Kx = 1 Cos = 0.8 tg = 0.75Ijs = Kx Pe /(1.732Ue Cos) = 14/(1.7320.380.8) = 7.6Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备由于开关控制3台用电器，开关的电流为Ir=7.603.00(台数)= 22.79 A。选择开关箱内隔离开关为Hk1-30/3，漏电保护器为 DZ15L-100/30。(4)、钢筋切断机开关箱至钢筋切断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 Cos = 0.7 tg = 1.02Ijs = Kx Pe /(1.732Ue Cos) = 13/(1.7320.380.7) = 6.51Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备由于开关控制2台用电器，开关的电流为Ir=6.512.00(台数)= 13.02 A。选择开关箱内隔离开关为Hk1-15/3，漏电保护器为 DZ15L-100/30。(5)、钢筋弯曲机开关箱至钢筋弯曲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 Cos = 0.8 tg = 0.75Ijs = Kx Pe /(1.732Ue Cos) = 13/(1.7320.380.8) = 5.7Aii)选择导线选择XV-410 ，空气明敷/架空线路时其安全载流量为57A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。iii)选择电气设备由于开关控制3台用电器，开关的电流为Ir=5.703.00(台数)= 17.09 A。选择开关箱内隔离开关为Hk1-30/3，漏电保护器为 DZ15L-100/30。(6)、直流电焊机开关箱至直流电焊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 Cos = 0.8 tg = 0.75Ijs = Kx Pe /(Ue Cos) = 14.24/(0.380.8) = 13.96Aii)选择导线选择XV-435 ，空气明敷/架空线路时其安全载流量为124A。室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。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，漏电保护器为 DZ10L-250/3。(7)、木工圆锯开关箱至木工圆锯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 = 0.75Ijs = Kx Pe /(1.732Ue Cos) = 13/(1.7320.380.8) = 5.7Aii)选择导线选择XV-4150 ，空气明敷/架空线路时其安全载流量为311A。室外架空铜芯导线按机械强度的最