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18.5千瓦用多大的电线

更新时间: 2021-03-25 00:10:22     

1、18.5千瓦电机需要6平方的电缆线。

2、计算方法:

根据三相电相线电流计算公式 I=P÷(U×1.732×cosΦ),P-功率(W);U-电压(380V);cosΦ-功率因素(0.85);I-相线电流(A)。带入数据P=18.5kw,U=380V ;计算得,相线电流I=33A。在三相平衡电路,一般铜导线的安全载流量为5~8A/mm^2。33÷8=4.13mm^2,电缆最近的规格为6mm^2

关键词: 千瓦 电线

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