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1、施工临时用电方案计算书XXX宿舍楼工程；属于框架结构;地上5层;地下0层；建筑高度：18.90m；标准层层高：3.30m ；总建筑面积：4618.00平方米；总工期：270天；施工单位：河北XXX建安工程有限公司。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:
2、-序号 机具名称 型号 安装功率(kW) 数量 合计功率(kW)1 蛙式夯土机 HW-60 3 1 3 2 平板震捣器*2 ZB11 2.2 1 2.2 3 木工圆锯 MJ106 5.5 1 5.5 4 木工平刨床 MB504A 3 1 3 5 插入震捣器*3 ZX35 2.4 1 2.4 6 蛙式夯土机 HW-60 3 1 3 7 插入震捣器*3 ZX35 2.4 1 2.4 8 平板震捣器*2 ZB11 2.2 1 2.2 9 钢筋调直机 GT6/8 5.5 1 5.5 10 钢筋切断机 QJ40-1 5.5 1 5.5 11 钢筋弯曲机 GW40 3 1 3 12 交流电焊机*2 BX3
3、-200-2 43.8 1 43.8 13 塔式起重机 QT47 48 1 48 14 卷扬机*2 JJ1K-3 56 1 56 15 灰浆搅拌机*2 UJ325 6 1 6 16 真空吸水泵 改型泵I号 5.5 1 5.5 17 生活办公用电 10 1 10 18 蛙式夯土机 HW-32 1.5 1 1.5 -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，采用导线穿钢管埋地敷设，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
4、级配电，两级防护。(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)、蛙式夯土机Kx = 0.5 Cos = 0.55 tg = 1.52Pjs = 0.53 = 1.5 kWQjs = Pjs tg=1.51.52 = 2.28 kvar(2)、平板式振动器*2Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.32.2 = 0.66 kWQjs = Pjs tg=0.661.02 = 0.67 kvar(3)、木工圆锯Kx = 0.3 Cos = 0.6 tg = 1.33Pjs = 0.35.5 = 1.65 kWQjs = P
5、js tg=1.651.33 = 2.2 kvar(4)、木工平刨床Kx = 0.3 Cos = 0.6 tg = 1.33Pjs = 0.33 = 0.9 kWQjs = Pjs tg=0.91.33 = 1.2 kvar(5)、插入式振动器*3Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.32.4 = 0.72 kWQjs = Pjs tg=0.721.02 = 0.73 kvar(6)、蛙式夯土机Kx = 0.5 Cos = 0.55 tg = 1.52Pjs = 0.53 = 1.5 kWQjs = Pjs tg=1.51.52 = 2.28 kvar(7)、
6、插入式振动器*3Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.32.4 = 0.72 kWQjs = Pjs tg=0.721.02 = 0.73 kvar(8)、平板式振动器*2Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.32.2 = 0.66 kWQjs = Pjs tg=0.661.02 = 0.67 kvar(9)、钢筋调直机Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.35.5 = 1.65 kWQjs = Pjs tg=1.651.02 = 1.68 kvar(10)、钢筋切断机Kx = 0.3 Cos
7、 = 0.7 tg = 1.02Pjs = 0.35.5 = 1.65 kWQjs = Pjs tg=1.651.02 = 1.68 kvar(11)、钢筋弯曲机Kx = 0.3 Cos = 0.7 tg = 1.02Pjs = 0.33 = 0.9 kWQjs = Pjs tg=0.91.02 = 0.92 kvar(12)、交流电焊机*2Kx = 0.35 Cos = 0.4 tg = 2.29将Jc =50%统一换算到Jc1 =100%的额定容量Pn = Sn Cos = 43.80.4=17.52kWPe = n(Jc/Jc1)1/2Pn = 1(0.5/1)1/217.52 = 12
8、.39 kWPjs = KxPe =0.3512.39 = 4.34kWQjs = Pjs tg=4.342.29 = 9.93 kvar(13)、塔式起重机Kx = 0.2 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 =0.260.72 = 12.14kWQjs = Pjs tg=12.141.33 = 16.19 kvar(14)、卷扬机*2Kx = 0.2 Cos = 0.6 tg = 1.33Pjs =
9、0.256 = 11.2 kWQjs = Pjs tg=11.21.33 = 14.93 kvar(15)、灰浆搅拌机*2Kx = 0.5 Cos = 0.55 tg = 1.52Pjs = 0.56 = 3 kWQjs = Pjs tg=31.52 = 4.56 kvar(16)、真空吸水泵Kx = 0.75 Cos = 0.8 tg = 0.75Pjs = 0.755.5 = 4.12 kWQjs = Pjs tg=4.120.75 = 3.09 kvar(17)、生活办公用电Kx = 0.7 Cos = 0.55 tg = 1.52Pjs = 0.710 = 7 kWQjs = Pjs
10、tg=71.52 = 10.63 kvar(18)、蛙式夯土机Kx = 0.5 Cos = 0.55 tg = 1.52Pjs = 0.51.5 = 0.75 kWQjs = Pjs tg=0.751.52 = 1.14 kvar(19)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(1.5+0.66+1.65+0.9+0.72+1.5+0.72+0.66+1.65+1.65+0.9+4.34+12.14+11.2+3+4.12+7+0.75) = 49.558 kW总的无功功率Qjs = KxQjs =0.9(2.28+0.67+2.2+1.
11、2+0.73+2.28+0.73+0.67+1.68+1.68+0.92+9.93+16.19+14.93+4.56+3.09+10.63+1.14) = 67.98 kvar总的视在功率Sjs = ( Pjs2+Qjs2 )1/2 = (49.5582+67.982)1/2 = 84.126 kVA总的计算电流计算Ijs = Sjs/(1.732Ue) = 84.126/(1.7320.38) = 127.82 A3、木工场地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
12、箱至用电设备的导线敷设采用铜橡皮绝缘导线空气明敷,室外架空铜导线按机械强度的最小截面为10mm2，由于这部分距离较短，因此不考虑电压降，只按安全载流量选择导线截面。(1)、蛙式夯土机开关箱至蛙式夯土机导线截面及开关箱内电气设备选择（开关箱以下机械启动后需要系数取1）:i)计算电流Kx = 1 Cos = 0.55 tg = 1.52Ijs = KxPe /(1.732Ue Cos) = 13/(1.7320.380.55) = 8.29Aii)选择导线选择BX-416+110 ，空气明敷时其安全载流量为110A。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开关为Hk1-15/3 ，熔断器RC1A-10其最大熔体电流为 IRD = 10A，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 DZ10L-100/3。
