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13问答网 > 进线端用铝线接变压器可以吗？

进线端用铝线接变压器可以吗？

2025-04-02 09:54:43

推荐回答（1个）

回答1：

电机总功率为110KW。以始端电压400V、110KW电动机总电流200A为例，末端正常运行时要求电压为380V，则线与线的电压降为20V，每根电线的电压降为10V，每根电线的线阻值：
R＝U/I＝10/220≈0.0455(Ω)
每根三相铝电线截面(铝电线电阻率为0.0283)：
S＝ρ×L/R＝0.0283×200/0.0455≈124(m㎡)可选择150平方的铝线。

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