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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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    zhujiyuan
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    1樓  發(fā)表于: 2012-01-06 15:22
    總功率=1000X3   線(xiàn)徑按1K瓦=1mm平方線(xiàn) 單項電流=功率/220V  三相電流=總功率/根號3x380  
    本人招聘電氣工程師，要求會(huì )觸摸屏，PLC，私服控制。聯(lián)系電話(huà)：13823198267

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