某工程施工现场临时用电施工方案.docx

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1、二、确定线路走向、电源线线径及电箱位置1、根据施工现场用电设备布置情况，动力与照明分开，工程13#楼和11#楼由一个级电箱分出3路干线埋地敷设，引至各二级分配电箱，再由分配电箱引至各用电设备的开关箱。9#楼和8#楼由一个级电箱分出3路干线埋地敷设，引至各二级分配电箱，再由分配电箱引至各用电设备的开关箱。2、据施工现场临时用电安全技术规范规定，本供电采用三相五线制供电即（TN-S）系统，采用三级漏电保护制度。3、配电箱的选择：采用总公司统一规格的各级电箱作配电箱，二级电箱的要求：（1）箱内设漏电开关（型号：DZ10L-100/3），闸刀开关带保险（型号：HK-100/3）、熔体电流50（A），接

2、线柱（3100A）组成.（2）漏电开关的动作电流及动作时间指标分别为(50mA,小于0.1S)。（3） 二级电箱外壳必须联通保护接地且重复接地。（4） 各楼层用电考虑施工及敷设方便，宜设在塔吊侧并每层设一个配电箱，由该电箱输出各个流动电箱。蛙式夯土机Kx = 0.5 Cos= 0.55 tg= 1.52Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.531/(1.7320.380.55) = 4.14A插入式振动器Kx = 0.3 Cos= 0.7 tg= 1.02Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.30.81/(1.7320.380.7) = 0.

3、52A平板式振动器Kx = 0.3 Cos= 0.7 tg= 1.02Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.31.11/(1.7320.380.7) = 0.72A交流电焊机Kx = 0.5 Cos= 0.4 tg= 2.29Ijs = Kx Pe 台数/(Ue Cos) = 0.56.621/(0.380.4) = 21.77A高压汞灯Kx = 0.75 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.7541/(1.7320.380.8) = 5.7A自落式混凝土搅拌机Kx = 0.75 Cos= 0.85 tg=

4、 0.62Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.755.51/(1.7320.380.85) = 7.37A白炽灯Kx = 0.9 Cos= 0.9 tg= 0.48Ijs = Kx Pe 台数/(Ue Cos) = 0.911/(0.220.9) = 4.55A备用Kx = 0.9 Cos= 0.9 tg= 0.48Ijs = Kx Pe 台数/(Ue Cos) = 0.911/(0.220.9) = 4.55A备用Kx = 0.9 Cos= 0.9 tg= 0.48Ijs = Kx Pe 台数/(Ue Cos) = 0.911/(0.220.9) = 4.55A自

5、落式混凝土搅拌机Kx = 0.75 Cos= 0.85 tg= 0.62Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.755.51/(1.7320.380.85) = 7.37A插入式振动器Kx = 0.3 Cos= 0.7 tg= 1.02Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.31.11/(1.7320.380.7) = 0.72A高压汞灯Kx = 0.75 Cos= 0.8 tg= 0.75Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.7541/(1.7320.380.8) = 5.7A蛙式夯土机Kx = 0.5 Cos= 0.

6、55 tg= 1.52Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.531/(1.7320.380.55) = 4.14A平板式振动器Kx = 0.3 Cos= 0.7 tg= 1.02Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.30.51/(1.7320.380.7) = 0.33A直流电焊机Kx = 0.7 Cos= 0.6 tg= 1.33Ijs = Kx Pe 台数/(Ue Cos) = 0.718.381/(0.380.6) = 56.44A白炽灯Kx = 0.9 Cos= 0.9 tg= 0.48Ijs = Kx Pe 台数/(Ue Cos)

7、= 0.911/(0.220.9) = 4.55A备用Kx = 1 Cos= 1 tg= 0Ijs = Kx Pe 台数/(Ue Cos) = 10.11/(0.221) = 0.45A备用Kx = 0.9 Cos= 0.9 tg= 0.48Ijs = Kx Pe 台数/(Ue Cos) = 0.911/(0.220.9) = 4.55A钢筋切断机Kx = 0.65 Cos= 0.7 tg= 1.02Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.6571/(1.7320.380.7) = 9.88A钢筋弯曲机Kx = 0.65 Cos= 0.7 tg= 1.02Ijs= Kx

8、 Pe 台数/(1.732Ue Cos) = 0.6531/(1.7320.380.7) = 4.23A木工圆锯Kx = 0.65 Cos= 0.6 tg= 1.33Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.655.51/(1.7320.380.6) = 9.05A闪光对焊机Kx = 0.65 Cos= 0.7 tg= 1.02Ijs= Kx Pe 台数/(1.732Ue Cos) = 0.65501/(1.7320.380.7) = 70.54A备用Kx = 0.9 Cos= 0.9 tg= 0.48Ijs = Kx Pe 台数/(Ue Cos) = 0.911/(0.220.9) = 4.55A备用Kx = 1 Cos= 1 tg= 0Ijs = Kx Pe 台数/(Ue Cos) = 10.11/(0.221) = 0.45A 供电系统简图