1、1 1、三三相相电电机机额额定定电电流流计计算算公公式式（直直接接输输入入）功率KW功率因数cos电流A（中国380V电压）电流A（德国400V电压）2.20.853.933.7430.855.365.0940.857.156.79110.8519.6618.68150.8526.8125.47220.8539.3337.36300.8553.6350.94450.8580.4476.42600.85107.25101.89900.85160.88152.831000.85178.75169.811100.85196.63186.802.20.93.713.5330.95.064.8140.9
2、6.756.42110.918.5717.64150.925.3224.06220.937.1435.28300.950.6548.11450.975.9772.17600.9101.2996.23900.9151.94144.341000.9168.82160.381100.9185.70176.422 2、电电力力系系统统负负荷荷计计算算序号负荷类型Pe（KW）KxUe（V）释义设备容量，一般是将所有设备铭牌容量相加而求得。需用系数，是用电设备在最大负荷时需要的有功功率（Pjs计算负荷）与设备容量Pe之比。这个数值可根据负荷性质，查表求得，并根据经验对其进行修正。额定电压2 2、电电力力系
3、系统统负负荷荷计计算算序号负荷类型Pe（KW）KxUe（V）1动力210.843802动力370.853803动力6900.853804动力23.40.853805动力00.753806动力00.853807动力0.83808动力0.83809动力0.838010动力0.8380合计771.4单位（KW）3 3、变变压压器器容容量量选选型型计计算算公公式式（直直接接输输入入）电机总功率总系数视在功率（计算）有功功率（计算）无功功率（计算）SjsPjsQjs3500.85330.56297.5144.093600.85340.00306148.203700.85349.44314.5152.32
4、3800.85358.89323156.443880.85366.44329.8159.733880.85366.44329.8159.736900.85617.37586.5192.776900.7536.67483233.936900.6460.00414200.516900.85651.67586.5284.056900.85617.37586.5192.774 4、电电力力系系统统负负荷荷计计算算(将将以以上上表表2 2、表表3 3整整合合)序号回路编号总功率Pe（KW）需用系数Kx功率因数Cos1370.850.82370.850.8323.40.850.8423.40.850.85
5、00.750.8600.850.8700.80.85800.80.85900.80.851000.80.85合合计计总总负负荷荷:Pe=120.8(KW):Pe=120.8(KW)平平均均功功率率因因数数=0.82=0.825 5、变变压压器器容容量量与与其其电电流流计计算算公公式式（直直接接输输入入）容量KVA高压电压KV高压电流A低压电压KV低压电流A80104.620.4115.47100105.770.4144.34125107.220.4180.43160109.240.4230.952001011.550.4288.682501014.430.4360.853151018.190.
6、4454.684001023.090.4577.375001028.870.4721.716301036.370.4909.358001046.190.41154.7310001057.740.41443.4212501072.170.41804.2716001092.380.42309.47200010115.470.42886.84250010144.340.43608.55315010181.870.44546.77400010230.950.45773.67500010288.680.47217.09630010363.740.49093.53800010461.890.411547.341000010577.370.414434.186 6、铝铝排排计计算算公公式式（直直接接输输入入）截面(mm)长度(米）密度(Kg/m3)重量(公斤)440127000.432550127000.675660127000.972880127001.72810100127002.7809270007 7、铜铜排排计计算算公公式式（直直接接输输入入）截面(mm)长度(米）密度(Kg/m3)重量(
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