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300kw需要多大电缆

更新时间: 2021-06-13 13:58:32     

1、300KW总功率的三相五线配电系统中,需要300平方的铜线及800A的开关比较合适。

2、 根据功率公式P=1.732UIcosφ有:I=P/(1.732Ucosφ)=300/(1.732X0.38X0.85)=537A(按三相市电计算,功率因数取0.85)。再根据电流选取电缆。

关键词: 300kw 需要 电缆

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