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75千瓦电机距离十二米用多大平方的单根电线

75千瓦电机距离十二米用多大平方的单根电线

2025-04-08 08:11:15

推荐回答（3个）

回答1：

75千瓦电机，使用三相电源，工作电流在197A多，考虑到电机的启动电流是工作电流的4倍以上，启动电流为800A，查国家电工规范“500伏铜芯绝缘导线长期连续负荷允许载流量表”，800A电流，至少需要两条150平方毫米的铜芯电缆。

回答2：

用25平方导线就够用了。

回答3：

不小于25mm²铝质导线。

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