常用电气计算.xls

1、变压器容量计算表 名称 组别额定功率输入容量需要系数功率因数功率因数正切有功功率无功功率视在功率低压额定电流10kV额定电流有功功率同期系数(0.80.9)无功功率同期系数(0.930.97)无功功率补偿率用电设备Pe(kW)S(kV.A)KxcostgPjs(kW)Qjs(kvar)Sjs(kV.A)Ijs(A)Igs(A)KpKqqc1#照明及电热344.000.750.800.75258.00193.50322.502#照明及电热302.000.750.800.75226.50169.88283.13办公及商住楼240.000.700.800.75168.00126.00210.00自动

2、扶梯30.000.600.501.7318.0031.1836.00厨房电力120.000.700.701.0284.0085.70120.00电梯112.000.400.501.7344.8077.6089.60防排烟风机42.000.900.800.7537.8028.3547.25卷帘门48.000.600.701.0228.8029.3841.140.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000

3、.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.00合计1238.00865.90741.581140.05同时系数0.740.90779.31704.501050.541596.140.900.95电容补偿448.350.58电容补偿后0.950.33779.31256.15820.331246.36功率损耗8.2041.02总计0.840.94787.51297.16841.711278.853016000kV.A容量变压器10001443.3857.74变压器负荷率0.75 0.850.84变压器应

4、选容量为:10001000kV.A无功补偿容量为:448448 kvarkvar用电设备组名称Kxcostg单独传动的金属加工机床：小批生产的金属冷加工机床0.120.160.51.73大批生产的金属冷加工机床0.170.20.51.73小批生产的金属热加工机床0.20.250.550.61.511.33大批生产的金属热加工机床0.250.30.651.17锻锤、压床、剪床及其它锻工机械0.250.61.33木工机械(木加工车间内)0.20.30.50.61.731.33液压机0.30.61.33生产用通风机0.750.850.80.850.750.62卫生用通风机0.650.70.80.75

5、泵、活塞型压缩机、电动发电机组0.750.850.80.75球磨机、破碎机、筛选机、搅拌机等0.750.860.80.850.750.62电阻炉（带调压器或变压器）：非自动装料0.60.70.950.980.330.2自动装料0.40.60.950.980.330.2干燥箱、加热器等0.70.910工频感应电炉（不带无功补偿装置）0.80.352.67高频感应电炉（不带无功补偿装置）0.80.61.33焊接和加热用高频加热设备0.50.650.71.02熔炼用高频加热设备0.80.850.80.850.750.62表面淬火电炉(带无功补偿装置)：电动发电机0.650.71.02真空管振荡器0.

6、80.850.62中频电炉(中频机组)0.650.750.80.75氢气炉(带调压器或变压器)0.40.50.850.90.620.48真空炉(带调压器或变压器)0.550.650.850.90.620.48电弧炼钢炉变压器0.90.850.62电弧炼钢炉的辅助设备0.150.51.73点焊机(非电子行业)、缝焊机0.350.61.33电子行业点焊机0.20.61.33对焊机0.350.71.02自动弧焊变压器0.50.51.73单头手动弧焊变压器0.350.352.68多头手动弧焊变压器0.40.352.68单头直流弧焊机0.350.61.33多头直流弧焊机0.70.71.02金属、机修、装配车间、锅炉房起重机(=25%)0.1 0.150.51.73铸造车间用起重机(=25%)0.150.30.51.73联锁的连续运输机械0.650.750.88非联锁的连续运输机械0.50.60.750.88一般工业用硅整流装置0.50.71.02电镀用硅整流装置0.70.80.75电解用硅整流装置0.70.80.75红外线干燥设备0.850.910电火花加工装置0.50.61.33超声波装置0.