施工现场临时用电设计概述Word下载.docx

1、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_QTZ6335.5044.902圆盘锯3.006.003高压水泵20.0040.004潜水泵2.206.605插入式振动器ZX701.506平板振动器4.327双笼电梯200*20080.008楼面照明9.009钢筋切断机4.008.0010钢筋弯曲机WJ-404.4011钢筋调直切断机_TQ4-1412交流电焊机 5kVA13自落式混凝土搅拌机_JD1505.5016.501435.4044.7815插入式振动器_ZX701.10162.0017办公照明15.0018塔式起重机_QTZ8046.0058.1919高

2、压泵2021生活区用电25.0022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 = 1.02将Jc = 40%统一换算到Jc = 25%的额定容量Pe =

3、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 = 1.02Pe = 0.70 6.00 = 4.20kWtg = 4.20 1.02 = 4.28kVar（3）高压水泵组 20.00 = 14.00kWtg = 14.00 1.02 = 14.28kVar（4）潜水泵组 2.20 = 1.54kWtg = 1.54 1.02 = 1.57kVar（5

4、）插入式振动器ZX70组Kx = 0.70，Cos = 0.68，tg = 1.08 1.50 = 1.05kWtg = 1.05 1.08 = 1.13kVar（6）平板振动器组 4.32 = 3.02kWtg = 3.02 1.08 = 3.26kVar（7）双笼电梯200*200组 20.00 = 6.00kWtg = 6.00 1.02 = 6.12kVar（8）楼面照明组 3.00 = 2.10kWtg = 2.10 1.02 = 2.14kVar（9）钢筋切断机组Kx = 0.70，Cos = 0.40，tg = 2.29 8.00 = 5.60kWtg = 5.60 2.29 =

5、 12.83kVar（10）钢筋弯曲机WJ-40组 4.40 = 3.08kWtg = 3.08 2.29 = 7.06kVar（11）钢筋调直切断机_TQ4-14组（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Pn = 2（4/1.00）1/20.82 = 10.4kWPe = 0.45 10.4= 4.7kWtg = 4.7 1.98 = 9.3kVar（13）自落式混凝土搅拌机_JD150组 16.50 = 11.55kWtg = 11.55 1.08 = 12.45kVar（14）塔式起重机_Q

6、TZ63组35.40 = 44.78kW 44.78 = 13.43kWtg = 13.43 1.02 = 13.70kVar（15）高压水泵组（16）潜水泵组（17）插入式振动器_ZX70组 1.10 = 0.77kWtg = 0.77 1.08 = 0.83kVar（18）平板振动器组 2.00 = 1.40kWtg = 1.40 1.08 = 1.51kVar（19）双笼电梯组 40.00 = 12.00kWtg = 12.00 1.02 = 12.24kVar（20）楼面照明组（21）办公照明组Kx = 1.00，Cos = 1.00，tg = 0Pe = 1.00 15.00 = 15.00kWtg = 15.00 0 = 0.00kVar（22）塔式起重机_QTZ80组46.00 = 58.19kW 58.19 = 17.46kWtg = 17.46 1.02 = 17.81kVar（23）双笼电梯SC200*200组（24）潜水泵组（25）高压泵组（26）平板振动器组Kx = 0.70，Cos = 0.68，tg = 1