施工现场临时用电设计.docx

1、施工现场临时用电设计施工现场临时用电设计1、 编制依据 （1）低压配电设计规范GB50054-2011 （2）建筑工程施工现场供电安全规范GB50194-1993 （3）通用用电设备配电设计规范GB50055-2011 （4）供配电系统设计规范GB50052-2009（5）施工现场临时用电安全技术规范JGJ46-20052、施工条件2.1 工程概况本工程位于无锡市锡山区新春东路交江海东路南东侧。本工程项目由3栋框架剪力墙结构的33层高层和一个大地下车库由人防和非人防组成。其中三期总建筑面积为68343，其中地上建筑面积为54288.35，地下室建筑总建筑面积为14054.65。本工程建筑设计使

2、用年限：三类、50年。本工程抗震设防类别为丙类，抗震设防烈度为6度。本工程高层建筑防火类别为二类，建筑耐火等级：地下室为一级，其余为二级。本工程由无锡市城归设计院有限公司设计，南通瑞达建设监理有限公司，上海绿地建筑工程有限公司承建。2.2 施工现场用电量统计表序号设备名称铭牌功率(kW)安装功率(kW)数量合计功率(kW)1塔式起重机_QTZ6335.5044.90144.902圆盘锯3.003.0026.003高压水泵20.0020.00240.004潜水泵2.202.2036.605插入式振动器ZX701.501.5011.506平板振动器4.324.3214.327双笼电梯200*200

3、20.0020.00480.008楼面照明3.003.0039.009钢筋切断机4.004.0028.0010钢筋弯曲机WJ-402.202.2024.4011钢筋调直切断机_TQ4-144.004.0028.0012交流电焊机 5kVA521013自落式混凝土搅拌机_JD1505.505.50316.5014塔式起重机_QTZ6335.4044.78144.7815插入式振动器_ZX701.101.1011.1016平板振动器2.002.0024.0017办公照明15.0015.00115.0018塔式起重机_QTZ8046.0058.19158.1919高压泵20.0020.00120.0

4、020插入式振动器ZX702.202.2012.2021生活区用电25.0025.00125.0022合计400.533、设计内容和步骤3.1、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。3.2 确定用电负荷(1)塔式起重机_QTZ63组Kx = 0.30，Cos = 0.70，tg = 1.0

5、2将Jc = 40%统一换算到Jc = 25%的额定容量Pe = n(Jc/Jc1)1/2Pn = 1(0.40/0.25)1/235.50 = 44.90kWPjs = KxPe = 0.30 44.90 = 13.47kWQjs = Pjstg = 13.47 1.02 = 13.74kVar(2)圆盘锯组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 6.00 = 4.20kWQjs = Pjstg = 4.20 1.02 = 4.28kVar(3)高压水泵组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe

6、= 0.70 20.00 = 14.00kWQjs = Pjstg = 14.00 1.02 = 14.28kVar(4)潜水泵组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 2.20 = 1.54kWQjs = Pjstg = 1.54 1.02 = 1.57kVar(5)插入式振动器ZX70组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 1.50 = 1.05kWQjs = Pjstg = 1.05 1.08 = 1.13kVar(6)平板振动器组Kx = 0.70，Cos = 0.68，t

7、g = 1.08Pjs = KxPe = 0.70 4.32 = 3.02kWQjs = Pjstg = 3.02 1.08 = 3.26kVar(7)双笼电梯200*200组Kx = 0.30，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.30 20.00 = 6.00kWQjs = Pjstg = 6.00 1.02 = 6.12kVar(8)楼面照明组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 3.00 = 2.10kWQjs = Pjstg = 2.10 1.02 = 2.14kVar(9)钢筋切断机组Kx =

8、 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 8.00 = 5.60kWQjs = Pjstg = 5.60 2.29 = 12.83kVar(10)钢筋弯曲机WJ-40组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 4.40 = 3.08kWQjs = Pjstg = 3.08 2.29 = 7.06kVar(11)钢筋调直切断机_TQ4-14组Kx = 0.70，Cos = 0.40，tg = 2.29Pjs = KxPe = 0.70 8.00 = 5.60kWQjs = Pjstg = 5.60

9、 2.29 = 12.83kVar(12)交流电焊机 组Kx = 0.45，Cos = 0.45，tg = 1.98将Jc = 40%统一换算到Jc = 100%的额定容量Pe = n(Jc/Jc1)1/2Pn = 2(4/1.00)1/20.82 = 10.4kWPjs = KxPe = 0.45 10.4= 4.7kWQjs = Pjstg = 4.7 1.98 = 9.3kVar(13)自落式混凝土搅拌机_JD150组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 16.50 = 11.55kWQjs = Pjstg = 11.55 1.0

10、8 = 12.45kVar(14)塔式起重机_QTZ63组Kx = 0.30，Cos = 0.70，tg = 1.02将Jc = 40%统一换算到Jc = 25%的额定容量Pe = n(Jc/Jc1)1/2Pn = 1(0.40/0.25)1/235.40 = 44.78kWPjs = KxPe = 0.30 44.78 = 13.43kWQjs = Pjstg = 13.43 1.02 = 13.70kVar(15)高压水泵组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 20.00 = 14.00kWQjs = Pjstg = 14.00 1

11、.02 = 14.28kVar(16)潜水泵组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 2.20 = 1.54kWQjs = Pjstg = 1.54 1.02 = 1.57kVar(17)插入式振动器_ZX70组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 1.10 = 0.77kWQjs = Pjstg = 0.77 1.08 = 0.83kVar(18)平板振动器组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 2.00 = 1.40kW

12、Qjs = Pjstg = 1.40 1.08 = 1.51kVar(19)双笼电梯组Kx = 0.30，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.30 40.00 = 12.00kWQjs = Pjstg = 12.00 1.02 = 12.24kVar(20)楼面照明组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 3.00 = 2.10kWQjs = Pjstg = 2.10 1.02 = 2.14kVar(21)办公照明组Kx = 1.00，Cos = 1.00，tg = 0Pjs = KxPe = 1.00

13、15.00 = 15.00kWQjs = Pjstg = 15.00 0 = 0.00kVar(22)塔式起重机_QTZ80组Kx = 0.30，Cos = 0.70，tg = 1.02将Jc = 40%统一换算到Jc = 25%的额定容量Pe = n(Jc/Jc1)1/2Pn = 1(0.40/0.25)1/246.00 = 58.19kWPjs = KxPe = 0.30 58.19 = 17.46kWQjs = Pjstg = 17.46 1.02 = 17.81kVar(23)双笼电梯SC200*200组Kx = 0.30，Cos = 0.70，tg = 1.02Pjs = KxPe

14、= 0.30 20.00 = 6.00kWQjs = Pjstg = 6.00 1.02 = 6.12kVar(24)潜水泵组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 2.20 = 1.54kWQjs = Pjstg = 1.54 1.02 = 1.57kVar(25)高压泵组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 20.00 = 14.00kWQjs = Pjstg = 14.00 1.02 = 14.28kVar(26)平板振动器组Kx = 0.70，Cos = 0.68，tg =

15、 1.08Pjs = KxPe = 0.70 2.00 = 1.40kWQjs = Pjstg = 1.40 1.08 = 1.51kVar(27)插入式振动器ZX70组Kx = 0.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 2.20 = 1.54kWQjs = Pjstg = 1.54 1.08 = 1.66kVar(28)楼面照明组Kx = 0.70，Cos = 0.70，tg = 1.02Pjs = KxPe = 0.70 3.00 = 2.10kWQjs = Pjstg = 2.10 1.02 = 2.14kVar(29)生活区用电组Kx = 0

16、.70，Cos = 0.68，tg = 1.08Pjs = KxPe = 0.70 25.00 = 17.50kWQjs = Pjstg = 17.50 1.08 = 18.87kVar(30)总的计算负荷计算，干线同期系数取 Kx = 0.90总的有功功率Pjs=1.1KxPjs= 1.10.90(13.47+4.20+14.00+1.54+1.05+3.02+6.00+2.10+5.60+3.08+5.60+0.47+11.55+13.43+14.00+1.54+0.77+1.40+12.00+2.10+15.00+17.46+6.00+1.54+14.00+1.40+1.54+2.10+

17、17.50) = 191.53kW总的无功功率Qjs=1.1KxQjs= 1.10.90(13.74+4.28+14.28+1.57+1.13+3.26+6.12+2.14+12.83+7.06+12.83+0.93+12.45+13.70+14.28+1.57+0.83+1.51+12.24+2.14+0.00+17.81+6.12+1.57+14.28+1.51+1.66+2.14+18.87) = 200.86kVar总的视在功率Sjs = (Pjs2+Qjs2)1/2 = (191.532+200.862)1/2 = 277.54kVA总的计算电流计算Ijs = Sjs/(1.732U

18、e) = 277.54/(1.7320.38) = 421.68A3.3、选择总箱的进线截面及进线开关(1)选择导线截面： 1) 按安全载流量： 上面已经计算出总计算电流Ijs = 421.68A2) 按允许电压降： S = 1.1Kx(PL)/CU = 1.1 0.9011104.74/(77.005.00) = 28.56mm2 3) 根据前面两条： 电缆线空气明敷，铜芯聚氯乙烯(铠装)绝缘电缆线YJV3185+295，其安全载流量为424A，截面面积185mm2，能够满足使用要求。(2)选择总进线开关：DZ10-600/3，其脱扣器整定电流值为Ir = 480A。(3)选择总箱中漏电保护

19、器：ZBM1-630/500。3.4 导线分路说明 施工生产临时供电：在配电间分成独立的4路支路。 第一路到78#楼分箱，供78#楼塔吊、搅拌区用电、木工机械、钢筋加工机械、电梯。 第二路到79#楼分箱，供79#楼塔吊，电梯、办公用电。 第三路到80#楼分箱，供80#的塔吊、电梯。 第四路到生活区分箱。3.5导线电流计算3.5 .1 78#楼干线路上导线截面及分配箱、开关箱内电气设备选择(分1分4)(1)塔式起重机_QTZ63开关箱至塔式起重机_QTZ63导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.04

20、4.9/(1.7320.380.70) = 97.46Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.0106.50/(77.005.00) = 0.28mm2选择BV-316+26，空气明敷时其安全载流量为105A。iii)选择电气设备选择开关箱内开关为DZ10-250/3，其脱扣器整定电流值为Ir = 200A。漏电保护器为DZ10L-100/3。(2)圆盘锯开关箱至圆盘锯导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.03.00/(1.7320.380.70) = 6.51Aii)选

21、择导线按允许电压降：S = Kx(PL)/CU = 1.09.00/(77.005.00) = 0.02mm2选择BV-31+26，空气明敷时其安全载流量为19A。iii)选择电气设备选择开关箱内开关为DZ5-20/3，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZBM1-63/10。(3)高压水泵开关箱至高压水泵导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.020.00/(1.7320.380.70) = 43.41Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.060.00/(

22、77.005.00) = 0.16mm2选择BV-56，空气明敷时其安全载流量为55A。iii)选择电气设备选择开关箱内开关为DZ15-63/3，其脱扣器整定电流值为Ir = 49A。漏电保护器为ZBM1-100/50。(4)潜水泵开关箱至潜水泵导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.02.20/(1.7320.380.70) = 4.78Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.06.60/(77.005.00) = 0.02mm2选择BV-31+26，空气明敷时其安全载流

23、量为19A。iii)选择电气设备选择开关箱内开关为DZ5-20/3，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZBM1-63/10。(5)插入式振动器ZX70开关箱至插入式振动器ZX70导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.68Ijs = KxPe/(1.732UeCos) = 1.01.50/(1.7320.380.68) = 3.35Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.04.50/(77.005.00) = 0.01mm2选择BV-31+26，空气明敷时其安全载流量为19A。iii)选择电气设备选择开关箱内开关为D

24、Z5-20/3，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZBM1-63/10。(6)平板振动器开关箱至平板振动器导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.68Ijs = KxPe/(1.732UeCos) = 1.04.32/(1.7320.380.68) = 9.65Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.012.96/(77.005.00) = 0.03mm2选择BV-31+26，空气明敷时其安全载流量为19A。iii)选择电气设备选择开关箱内开关为DZ5-20/3，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZB

25、M1-63/10。(7)双笼电梯200*200开关箱至双笼电梯200*200导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.020.00/(1.7320.380.70) = 43.41Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.060.00/(77.005.00) = 0.16mm2选择BV-56，空气明敷时其安全载流量为55A。iii)选择电气设备选择开关箱内开关为DZ15-63/3，其脱扣器整定电流值为Ir = 49A。漏电保护器为ZBM1-100/50。(8)楼面照明开关箱至楼面

26、照明导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.70Ijs = KxPe/(1.732UeCos) = 1.03.00/(1.7320.380.70) = 6.51Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.09.00/(77.005.00) = 0.02mm2选择BV-31+26，空气明敷时其安全载流量为19A。iii)选择电气设备选择开关箱内开关为DZ5-20/3，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZBM1-63/10。(9)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i)计算电流Kx 取 1.0，Cos

27、= 0.40Ijs = KxPe/(1.732UeCos) = 1.04.00/(1.7320.380.40) = 15.19Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.012.00/(77.005.00) = 0.03mm2选择BV-31+26，空气明敷时其安全载流量为19A。iii)选择电气设备选择开关箱内开关为DZ15-40/3，其脱扣器整定电流值为Ir = 32A。漏电保护器为ZBM1-100/16。(10)钢筋弯曲机WJ-40开关箱至钢筋弯曲机WJ-40导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.40Ijs = KxPe/(1.7

28、32UeCos) = 1.02.20/(1.7320.380.40) = 8.36Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.06.60/(77.005.00) = 0.02mm2选择BV-31+26，空气明敷时其安全载流量为19A。iii)选择电气设备选择开关箱内开关为DZ5-20/3，其脱扣器整定电流值为Ir = 16A。漏电保护器为ZBM1-63/10。(11)钢筋调直切断机_TQ4-14开关箱至钢筋调直切断机_TQ4-14导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.40Ijs = KxPe/(1.732UeCos) = 1.04.00/(1.7320.380.40) = 15.19Aii)选择导线按允许电压降：S = Kx(PL)/CU = 1.012.00/(77.005.00) = 0.03mm2选择BV-31+26，空气明敷时其安全载流量为19A。iii)选择电气设备选择开关箱内开关为DZ15-40/3，其脱扣器整定电流值为Ir = 32A。漏电保护器为ZBM1-100/16。(12)交流电焊机 开关箱至交流电焊机 导线截面及开关箱内电气设备选择i)计算电流Kx 取 1.0，Cos = 0.45Ijs = KxPe/(1.73