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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(0.8~0.9)无功功率同期系数(0.93~0.97)无功功率补偿率用电设备Pe(kW)S(kV.A)KxcosφtgφPjs(kW)Qjs(kvar)Sjs(kV.A)Ijs(A)Igs(A)KpKq△qc1#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48.000.600.701.0228.8029.3841.140.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.00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变压器容量计算表电容补偿后0.950.33779.31256.15820.331246.36功率损耗8.2041.02总计0.840.94787.51297.16841.711278.8510001443.3857.740.84kV.A448kvar无功补偿容量为:30~16000kV.A容量变压器变压器负荷率0.75～0.85变压器应选容量为:1000用电设备组名称Kxcosφtgφ单独传动的金属加工机床：小批生产的金属冷加工机床0.12～0.160.51.73大批生产的金属冷加工机床0.17～0.20.51.73小批生产的金属热加工机床0.2～0.250.55～0.61.51～1.33大批生产的金属热加工机床0.25～0.30.651.17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)0.2～0.30.5～0.61.73～1.33液压机0.30.61.33生产用通风机0.75～0.850.8～0.850.75～0.62卫生用通风机0.65～0.70.80.75泵、活塞型压缩机、电动发电机组0.75～0.850.80.75球磨机、破碎机、筛选机、搅拌机等0.75～0.860.8～0.850.75～0.62电阻炉（带调压器或变压器）：非自动装料0.6～0.70.95～0.980.33～0.2自动装料0.4～0.60.95～0.980.33～0.2干燥箱、加热器等0.7～0.910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0.5～0.650.71.02熔炼用高频加热设备0.8～0.850.8～0.850.75～0.62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0.80.850.62中频电炉(中频机组)0.65～0.750.80.75氢气炉(带调压器或变压器)0.4～0.50.85～0.90.62～0.48真空炉(带调压器或变压器)0.55～0.650.85～0.90.62～0.48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(ε=25%)0.1～0.150.51.73铸造车间用起重机(ε=25%)0.15～0.30.51.73联锁的连续运输机械0.650.750.88非联锁的连续运输机械0.5～0.60.750.88一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0.85～0.910电火花加工装置0.50.61.33超声波装置0.70.71.02X光设备0.30.551.52电子计算机主机(中频机组)0.6～0.70.80.75电子计算机外部设备0.4～0.50.51.73试验设备(仪表为主)0.15～0.20.71.02试验设备(电热为主)0.2～0.40.80.75磁粉探伤机0.20.42.29铁屑加工机械0.40.750.88木工机械一般木材加工0.20.651.17筛砂机0.60.71.02称量车0.150.51.73阀门0.180.51.73静电除尘器0.80.80.75硒整流器0.70.71.02稳压器0.60.71.02插头设备0.15～0.250.71.02排气台0.5～0.70.90.48老炼台0.6～0.70.71.02陶瓷隧道窑0.8～0.90.950.33拉单晶炉0.7～0.750.90.48赋能腐蚀设备0.60.930.4真空浸渍设备0.70.950.33科研机构的实验室及实习工厂总的电力负荷0.1～0.20.7～0.81.02～0.75大专院校的实验室及实习工厂总的电力负荷0.1～0.20.7～0.81.02～0.75一般医疗插座0.20.80.75给水泵和排水泵0.80.850.62循环水泵、油泵0.80.80.75剪板机0.2～0.40.51.73振动机0.6～0.70.65～0.751.17～1.02卷扬机0.55～0.60.80.75冷冻机0.65～0.750.80.75窗式空调器0.7～0.80.80.75洗衣房电力0.65～0.750.51.73厨房电力0.5～0.70.80.75实验室电力0.2～0.40.7～0.81.02～0.75医院电力0.4～0.50.80.75洗衣机0.40.51.73绞肉机、磨碎机0.70.80.75建筑类别建筑类别生产厂房(有天然采光)宿舍区生产厂房(无天然采光)医院办公楼食堂设计室商店科研楼学校仓库展览馆锅炉房旅馆光源类别cosφtgφ光源类别cosφtgφ白炽灯、卤钨灯10高压钠灯0.451.98荧光灯（无补偿）0.551.52金属卤化物灯0.4～0.612.29～1.29荧光灯（有补偿）0.90.48镝灯0.521.6高压水银灯0.45～0.651.98～1.16氙灯0.90.48照明用电设备cosφ、tgφ表0.5～0.70.7～0.80.90.6～0.70.7～0.80.9～0.950.9～0.950.90.8～0.90.6～0.7照明用电设备Kx表KxKx0.8～0.90.6～0.80.9～10.5Seb变压器容量Pk空载有功损耗Pd短路有功损耗Sjs低压侧计算负荷Qk空载有功损耗Qd短路有功损耗Ik空载电流比Ud%阻抗电压比ΔPb有功损耗ΔQb无功损耗300.130.60.00.841.22.840.10.8500.170.870.01.2522.540.21.3630.21.040.01.5122.522.442.41.5800.251.250.01.763.22.240.31.81000.291.50.02.142.140.32.11250.341.80.02.55240.32.51600.42.20.03.046.41.940.43.02000.482.60.03.681.840.53.62500.563.050.04.25101.740.64.33150.673.650.05.0412.61.640.75.04000.84.30.06161.540.86.05000.965.10.07201.441.07.06301.26.20.08.1928.351.34.51.28.28001.47.50.09.6361.24.51.49.610001.710.30.011451.14.51.711.012501.9512.80.012.556.2514.52.012.516002.414.50.014.4720.94.52.414.4已知设计数据中间计算结果计算结果Seb变压器容量Pk空载有功损耗Pd短路有功损耗Sjs低压侧计算负荷Qk空载有功损耗Qd短路有功损耗Ik空载电流比Ud%阻抗电压比ΔPb有功损耗ΔQb无功损耗2000.332.60.01.880.940.31.82500.43.050.02.25100.940.42.33150.483.650.02.5212.60.840.52.54000.574.30.02.8160.740.62.85000.685.10.03.5200.740.73.56300.816.20.04.09528.350.654.50.84.18000.987.50.04.8360.64.51.04.810001.1510.30.05.5450.554.51.25.512501.35120.06.2556.250.54.51.46.316001.6814.50.08720.54.51.78.020001.9517.150.010900.54.52.010.025002.2820.30.012.5112.50.54.52.312.5已知设计数据中间计算结果计算结果S9-M-10/0.4kV变压器损耗计算SZ-M-10/0.4kV变压器损耗计算Seb变压器容量Pk空载有功损耗Pd短路有功损耗Sjs低压侧计算负荷Qk空载有功损耗Qd短路有功损耗Ik空载电流比Ud%阻抗电压比ΔPb有功损耗ΔQb无功损耗1000.41.880.00.840.840.40.81600.542.550.01.286.40.840.51.32000.623.10.01.680.840.61.62500.723.60.01.75100.740.71.83150.884.60.02.20512.60.740.92.24000.975.40.02.4160.641.02.45001.166.60.03200.641.23.06301.297.90.03.7837.80.661.33.88001.529.50.04480.561.54.010001.7611.40.05600.561.85.012502.0812.50.06.25750.562.16.316002.4413.90.08960.562.48.020003.3217.50.081200.463.38.02500420.30.0101500.464.010.0已知设计数据中间计算结果计算结果SG10-10/0.4kV变压器损耗计算变压器额定容量Se（kVA）变压器低压的额定电压Ue（kV）变压器的阻抗电压百分数Uk（％）变压器低压的额定电流Ie（A）变压器低压侧母线出三相短路电流估算值Id（kA）6300.44.5909.326720.2摘自《现代建筑电气技术设计文集》Id=Ie/Uk%Ie=Se/（1.732xUe）Id=100xSe/(1.732xUexUk)其中：Se---变压器额定容量kVAIe---变压器低压的额定电流AUe---变压器低压的额定电压VUk---变压器的阻抗电压百分数Id---变压器低压侧母线出三相短路电流AUk含义可以理解为：假定条件：1.10kV侧线缆阻抗忽略不计，短路容量无穷大，这