文档介绍：建筑工程施工临时用电专项方案
一、编制依据
?低压配电设计标准?GB50054-95中国建筑工业出版社
?建筑工程施工现场供电平安标准?GB50194-93中国建筑工业出版社
?通用用电设备配电设计标9kW
(3)、钢筋切断机
Kx = Cosφ = tgφ =
Pjs = × = kW
(4)、钢筋调直机
Kx = Cosφ = tgφ =
Pjs = × = kW
(5)、钢筋变曲机
Kx = Cosφ = tgφ =
Pjs = × = kW
(6)、交流电弧焊机
Kx = Cosφ = tgφ =
将Jc =50%统一换算到Jc1 =100%的额定容量
Pe = n×(Jc/Jc1)1/2×Pn =2×()1/2× = kW
Pjs = Kx×Pe =× =
(7)、交流对焊机
Kx = Cosφ = tgφ =
将Jc =50%统一换算到Jc1 =100%的额定容量
Pe = n×(Jc/Jc1)1/2×Pn =1×()1/2× = kW
Pjs = Kx×Pe =× =
(8)、移动箱
Kx = Cosφ = tgφ =
将Jc =40%统一换算到Jc1 =70%的额定容量
Pe = n×(Jc/Jc1)1/2×Pn =1×()1/2× = kW
Pjs = Kx×Pe =× =
(9)、交流立焊机
Kx = Cosφ = tgφ =
将Jc =50%统一换算到Jc1 =100%的额定容量
Pe = n×(Jc/Jc1)1/2×Pn =2×()1/2× = kW
Pjs = Kx×Pe =× =
(10)、1~
Kx = Cosφ = tgφ =
Pjs = × = kW
(11)总的计算负荷计算，总箱同期系数取 Kx =
总的有功功率
Pjs = Kx×ΣPjs = ×(+++++++++) = kVA
总的无功功率
Qjs = Kx×ΣQjs =×(+++++++++) = kVA
总的视在功率
Sjs = (Pjs2+Qjs2)1/2 = (+)1/2 = kVA
总的计算电流计算
Ijs = Sjs/(×Ue) = /(×) = A
3、选择变压器:
根据计算的总的视在功率选择根据计算的总的视在功率选择SL7-160/10型三相电力变压器，>，其高压侧电压为10kV同施工现场外的高压架空线路的电压级别一致。
4、选择总箱的进线截面及进线开关:
(1)选择导线截面：上面已经计算出总计算电流Ijs = ，查表得室外架空线路40 °C时铜芯橡皮绝缘导线BLV-3×120，其平安载流量