一、电机功率与配线直径计算首先要计算100KW负荷的线电流。 对于三相平衡电路而言，三相电路功率的计算公式是：P=1.732IUcosφ。由三相电路功率公式可推出：线电流公式：I=P/1.732Ucosφ 式中：P为电路功率，U为线电压，三相是380V，cosφ是感性负载功率因素，一般综合取0.8你的100KW负载的线...
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