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380v电线平方计算法

更新时间: 2021-05-27 18:56:31     

1、计算的具体方法如下:380kw负载的电流(按COSφ为0.8时):I=P/1.732/U/COSφ=720/1.732/0.38/0.8≈1368(A)

2、大截面铜芯电线每平方安全载流约2.5~3A,需电线截面:S=1368/3=456(平方)

3、电缆规格可选用:3*150+1*70

关键词: 380v 电线 平方 算法

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