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wangfuwang
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樓主  發(fā)表于: 2012-01-06 13:30

1.這電路總功功率多大，每相電流多少？如果選擇電線(xiàn)，按2KW計算，還是按3KW計算（請不要說(shuō)為了安全起見(jiàn)，選3KW，）
2.本人分析是總功率3KW，每相通過(guò)的電流是2KW，因為任意一相的回路只有通過(guò)二條發(fā)熱管。所而選擇電線(xiàn)時(shí)可按2KW計算，這樣算法不知正不正確，請高工解答。
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    1樓  發(fā)表于: 2012-01-06 14:04
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