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qinchenglim
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樓主  發(fā)表于: 2017-12-06 10:33
圖片：
2個(gè)電流互感器1個(gè)熱繼如圖所示接線(xiàn)，互感器400/5，熱繼該選多大的才能正常保護電機？
電機132KW  AC380V 先謝謝各位大神
tangguohua
tangguohua
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1樓  發(fā)表于: 2017-12-07 16:56
選5A，整定值設置3.2

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