施工现场临时用电组织设计(好)

1、R13005地块B标工程临 时 用 电 专 项 施 工 方南通八建集团有限公司一、编制依据二、施工条件三、设计内容和步骤四、绘制临时供电施工图五、安全用电技术措施六、安全用电防火措施七、防雷装置设计八、接地装置设计施工现场临时用电组织设计计算依据:1、 施工现场临时用电安全技术规范JGJ46-20052、低压配电设计规范GB50054-20113、 建筑工程施工现场供电安全规范GB50194-934、通用用电设备配电设计规范 GB50055-20115、供配电系统设计规范 GB50052-20096、建筑施工安全检查标准 JGJ59-2011、施工条件序号机具名称型号安装功率(kW)数量合计功

2、率(kW)1塔式起重机QTZ633241282自落式混凝土搅拌机JD3508183施工升降机SCD200/200112224插入式振动器ZX250.821.65平板式振动器ZB111.111.16钢筋调直机GT3/95.515.57钢筋切断机QJ40-15.515.58钢筋弯曲机GW403139木工圆锯MJ1065.515.510高压汞灯11111碘钨灯15512塔式起重机QTZ402612613自落式混凝土搅拌机JD35081814施工升降机SCD200/2001111115插入式振动器ZX250.810.816平板式振动器ZB111.111.117钢筋调直机GT3/95.515.518钢筋

3、切断机QJ40-15.515.519钢筋弯曲机GW4031320木工圆锯MJ1065.515.521高压汞灯11122碘钨灯155、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。按照JGJ46-2005规定制定施工组织设计，接地电阻 RW 4Q

4、2、确定用电负荷：(1) 、塔式起重机Kx=0.7，Cos© =0.65 tg © =1.17将Jc=40%统一换算到Jc1 =25%的额定容量Pn=32kWPe=n X(Jc/Jc1)1/2>Pn =1 ®.4/0.25)1/2X32=40.48 kWPjs=KxXPe=0.7 >0.48=28.33kWQjs=Pjs> tg © =28.33 > 1.17=33.13kvar(2) 、自落式混凝土搅拌机Kx=0.75， Cos© =0.85 tg © =0.62Pjs=0.75 卷=6kWQjs=PjsX

5、tg © =6X 0.62=3.72kvar(3) 、施工升降机Kx=0.3, Cos© =0.6 tg © =13Pjs=0.3 X1=3.3kWQjs=PjsX tg © =3.3 x 1.33=4.4kvar(4) 、插入式振动器Kx=0.3，Cos© =0.7，tg © =1.02Pjs=0.3 X.8=0.24kWQjs=PjsX tg © =0.24X 1.02=0.24kvar(5) 、平板式振动器Kx=0.3，Cos© =0.7，tg © =1.02Pjs=0.3X1.1=0.33kWQj

6、s=PjsX tg © =0.33X 1.02=0v.3a4rk(6) 、钢筋调直机Kx=0.65，Cos© =0.7，tg © =1.02Pjs=0.65 X5.5=3.575kWQjs=PjsX tg © =3.58 X 1.02=3.65kvar(7) 、钢筋切断机Kx=0.65，Cos© =0.7，tg © =1.02Pjs=0.65 X5.5=3.575kWQjs=PjsX tg © =3.58 X 1.02=3.65kvar(8) 、钢筋弯曲机Kx=0.65，Cos© =0.7，tg © =1

7、.02Pjs=0.65 X3=1.95kWQjs=PjsX tg © =1.95X 1.02=1.99kvar(9) 、木工圆锯Kx=0.65，Cos© =0.6，tg © =1.33Pjs=0.65 X5.5=3.575kWQjs=PjsX tg © =3.58 X 1.33=4.77kvar(10) 、高压汞灯Kx=0.6, Cos© =0.7 tg © =1.02Pjs=0.6 XX1.1=0.66kWQjs=PjsX tg © =0.66 X 1.067kVar(11) 、碘钨灯Kx=0.3，Cos© =0

8、.7，tg © =1.02Pjs=0.3X5X1=1.5kWQjs=PjsX tg © =1.5X 1.02=1.53kvar(12) 、塔式起重机Kx=0.7，Cos© =0.65，tg © =1.17将Jc=40%统一换算到JCi =25%的额定容量Pn=32kWPe=nX(Jc/Jc1)1/2XPn =1 X(0.4/0.25)1/2X32=40.48 kWPjs=KxXPe=0.7X40.48=28.33kWQjs=PjsX tg © =28.33 X 1.17=33.13kvar(13) 、自落式混凝土搅拌机Kx=0.75，Cos&#

9、169; =0.85 tg © =0.62Pjs=0.75 X8=6kWQjs=PjsX tg © =6X 0.62=3.72kvar(14) 、施工升降机Kx=0.3，Cos© =0.6，tg © =1.33Pjs=0.3 X1 1=3.3kWQjs=PjsX tg © =3.3X 1.33=4.4kvar(15) 、插入式振动器Kx=0.3，Cos© =0.7，tg © =1.02Pjs=0.3 X0.8=0.24kWQjs=PjsX tg © =0.24X 1.02=0.24kvar(16) 、平板式振动器K

10、x=0.3，Cos© =0.7，tg © =1.02Pjs=0.3X1.1=0.33kWQjs=PjsX tg © =0.33 x 1.02=0.34kvar(17) 、钢筋调直机Kx=0.65，Cos© =0.7，tg © =1.02Pjs=0.65 X.5=3.575kWQjs=Pjsx tg © =3.58x 1.02=3.65kvar(18) 、钢筋切断机Kx=0.65，Cos© =0.7，tg © =1.02Pjs=0.65 x5.5=3.575kWQjs=Pjsx tg © =3.58x 1.

11、02=3.65kvar(19) 、钢筋弯曲机Kx=0.65，Cos© =0.7，tg © =1.02Pjs=0.65 x3=1.95kWQjs=Pjsx tg © =1.95x 1 . 0929=k1v. ar(20) 、木工圆锯Kx=0.65，Cos© =0.6，tg © =1.33Pjs=0.65 x5.5=3.575kWQjs=Pjsx tg © =3.58x 1.33=4.77kvar(21) 、高压汞灯Kx=0.6，Cos© =0.7，tg © =1.02Pjs=0.6x1x1.1=0.66kWQjs=P

12、jsx tg © =0.66x 1.02=0.67kvar(22) 、碘钨灯Kx=0.3，Cos© =0.7，tg © =1.02Pjs=0.3x5x1=1.5kWQjs=Pjsx tg © =1.5 x 1.02=1.53kvar(23) 总的计算负荷计算，总箱同期系数取 Kx=0.95总的有功功率Pjs=Kx x 艺jP0.95 X28.33+6+3.3+0.24+0.33+3.58+3.58+1.95+3.58+0.66+1.5+28.33+6+3.3+0.24+0.33+3.58+3.58+1.95+3.58+0.66+1.5)=100.774k

13、W总的无功功率Qjs=Kx X艺 Qs=0.95 &3.13+3.72+4.4+0.24+0.34+3.65+3.65+1.99+4.77+0.67+1.53+33.13+3.72+4.4+0.24+0.34+3.65+3.65+1.99+4.77+0.67+1.53)=110.354kvar总的视在功率Sjs=(Pjs2+Qjs2)1/2=(100.7742+110.3542)1/2=149.444kVA总的计算电流计算Ijs=Sjs/(1.732 UXe)=149.444/(1.732 0.3X8)=227.063A3、 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

14、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© =0.65 tg © =1.17Ijs=Kx XP/(1.732 UXX Cos © )=1 X 40.48/(1.732 X 0.38 X 0.65)=94.62Aii) 选择导线选择VV-3X35+2X16，空气明敷/架空线路时其安全载流量为115A。室外架空铜芯导线按机械强度的最小截面为 1 0mm2 ，满足要求。iii) 选择电气设备选择开关箱内隔离开关为HH3-100/