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浙江某商住楼临时用电施工方案Pjs=0.30×3.00=0.90kW
Kx=0.30Cosφ=0.60tgφ=1.33
Pjs=0.30×3.00=0.90kW
某高层室内装修施工组织设计方案Kx=0.35Cosφ=0.60tgφ=1.33
将Jc=50%统一换算到Jc1=100%的额定容量
Pe=n×(Jc/Jc1)1/2×Pn=1×(0.50/1.00)1/2×6.00=4.24kW
Pjs=Kx×Pe=0.35×4.24=1.48kW
Kx=0.20Cosφ=0.60tgφ=1.33
Pjs=0.20×7.50=1.50kW
(19)、平板式振动器
Kx=0.30Cosφ=0.70tgφ=1.02
Pjs=0.30×1.10=0.33kW
(20)、插入式振动器
Kx=0.30Cosφ=0.70tgφ=1.02
Pjs=0.30×1.10=0.33kW
Kx=0.30Cosφ=0.70tgφ=1.02
Pjs=0.30×3.00=0.90kW
Kx=0.30Cosφ=0.60tgφ=1.33
Pjs=0.30×3.00=0.90kW
Kx=0.35Cosφ=0.60tgφ=1.33
将Jc=50%统一换算到Jc1=100%的额定容量
Pe=n×(Jc/Jc1)1/2×Pn=1×(0.50/1.00)1/2×6.00=4.24kW
Pjs=Kx×Pe=0.35×4.24=1.48kW
Kx=0.20Cosφ=0.60tgφ=1.33
将Jc=40%统一换算到Jc1=25%的额定容量
Pe=n×(Jc/Jc1)1/2×Pn=1×(0.40/0.25)1/2×39.00=49.33kW
Pjs=Kx×Pe=0.20×49.33=9.87kW
Kx=0.30Cosφ=0.70tgφ=1.02
Pjs=0.30×4.00=1.20kW
Kx=0.30Cosφ=0.70tgφ=1.02
Pjs=0.30×7.00=2.10kW
Kx=0.30Cosφ=0.70tgφ=1.02
Pjs=0.30×3.00=0.90kW
Kx=0.35Cosφ=0.40tgφ=2.29
将Jc=50%统一换算到Jc1=100%的额定容量
Pe=n×(Jc/Jc1)1/2×Pn=1×(0.50/1.00)1/2×23.40=16.55kW
Pjs=Kx×Pe=0.35×16.55=5.79kW
Kx=0.30Cosφ=0.60tgφ=1.33
Pjs=0.30×3.00=0.90kW
Kx=0.35Cosφ=0.60tgφ=1.33
将Jc=50%统一换算到Jc1=100%的额定容量
Pe=n×(Jc/Jc1)1/2×Pn=1×(0.50/1.00)1/2×6.00=4.24kW
Pjs=Kx×Pe=0.35×4.24=1.48kW
(31)总的计算负荷计算，总箱同期系数取Kx=0.90
Pjs=Kx×ΣPjs=0.90×(1.50+1.50+11.25+0.33+0.33+0.90+0.90+1.48+9.55+1.50+1.50+11.25+0.33+0.33+0.90+0.90+1.48+1.50+0.33+0.33+0.90+0.90+1.48+9.87+1.20+2.10+0.90+5.79+0.90+1.48)=66.267kVA
Qjs=Kx×ΣQjs=0.90×(2.00+2.28+6.97+0.34+0.34+0.92+1.20+1.98+21.89+2.00+2.28+6.97+0.34+0.34+0.92+1.20+1.98+2.00+0.34+0.34+0.92+1.20+1.98+13.16+1.22+2.14+0.92+13.27+1.20+1.98)=85.132kVA
Sjs=(Pjs2+Qjs2)1/2=(66.2672+85.1322)1/2=107.883kVA
Ijs=Sjs/(1.732×Ue)=107.883/(1.732×0.38)=163.916A
4、选择总箱的进线截面及进线开关:
5、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铝塑料绝缘导线穿焊接钢管敷设，由于这部分距离较短，因此不考虑电压降，只按安全载流量选择导线截面。
(1)、卷扬机开关箱至卷扬机导线截面及开关箱内电气设备选择:
Kx=0.20Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.20×7.50/(1.732×0.38×0.60)=3.80
(2)、灰浆搅拌机开关箱至灰浆搅拌机导线截面及开关箱内电气设备选择:
Kx=0.50Cosφ=0.55tgφ=1.52
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.50×3.00/(1.732×0.38×0.55)=4.14
(3)、自落式混凝土搅拌机开关箱至自落式混凝土搅拌机导线截面及开关箱内电气设备选择:
Kx=0.75Cosφ=0.85tgφ=0.62
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.75×15.00/(1.732×0.38×0.85)=20.11
(4)、平板式振动器开关箱至平板式振动器导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×1.10/(1.732×0.38×0.70)=0.72
(5)、插入式振动器开关箱至插入式振动器导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×1.10/(1.732×0.38×0.70)=0.72
(6)、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:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×3.00/(1.732×0.38×0.70)=1.95
(7)、木工圆锯开关箱至木工圆锯导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×3.00/(1.732×0.38×0.60)=2.28
(8)、直流电焊机开关箱至直流电焊机导线截面及开关箱内电气设备选择:
Kx=0.35Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.35×4.24/(1.732×0.38×0.60)=3.76
(9)、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:
Kx=0.35Cosφ=0.40tgφ=2.29
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.35×27.29/(1.732×0.38×0.40)=36.29
(10)、卷扬机开关箱至卷扬机导线截面及开关箱内电气设备选择:
Kx=0.20Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.20×7.50/(1.732×0.38×0.60)=3.80
(11)、灰浆搅拌机开关箱至灰浆搅拌机导线截面及开关箱内电气设备选择:
Kx=0.50Cosφ=0.55tgφ=1.52
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.50×3.00/(1.732×0.38×0.55)=4.14
(12)、自落式混凝土搅拌机开关箱至自落式混凝土搅拌机导线截面及开关箱内电气设备选择:
Kx=0.75Cosφ=0.85tgφ=0.62
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.75×15.00/(1.732×0.38×0.85)=20.11
(13)、插入式振动器开关箱至插入式振动器导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×1.10/(1.732×0.38×0.70)=0.72
(14)、平板式振动器开关箱至平板式振动器导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×1.10/(1.732×0.38×0.70)=0.72
(15)、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:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×3.00/(1.732×0.38×0.70)=1.95
(16)、木工圆锯开关箱至木工圆锯导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×3.00/(1.732×0.38×0.60)=2.28
(17)、直流电焊机开关箱至直流电焊机导线截面及开关箱内电气设备选择:
Kx=0.35Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.35×4.24/(1.732×0.38×0.60)=3.76
(18)、卷扬机开关箱至卷扬机导线截面及开关箱内电气设备选择:
Kx=0.20Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.20×7.50/(1.732×0.38×0.60)=3.80
(19)、平板式振动器开关箱至平板式振动器导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×1.10/(1.732×0.38×0.70)=0.72
(20)、插入式振动器开关箱至插入式振动器导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×1.10/(1.732×0.38×0.70)=0.72
(21)、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:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×3.00/(1.732×0.38×0.70)=1.95
(22)、木工圆锯开关箱至木工圆锯导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×3.00/(1.732×0.38×0.60)=2.28
(23)、直流电焊机开关箱至直流电焊机导线截面及开关箱内电气设备选择:
Kx=0.35Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.35×4.24/(1.732×0.38×0.60)=3.76
亮化施工组织设计(24)、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:
Kx=0.20Cosφ=0.60tgφ=1.33
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.20×49.33/(1.732×0.38×0.60)=24.98
(25)、钢筋调直机开关箱至钢筋调直机导线截面及开关箱内电气设备选择:
Kx=0.30Cosφ=0.70tgφ=1.02
Ijs=Kx×Pe/(1.732×Ue×Cosφ)=0.30×4.00/(1.732×0.38×0.70)=2.60
新城河综合整治工程深基坑专项施工方案(26)、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: