ABB原裝進口ei803運行性能好，并可節(jié)省各種材料。按轉子結構的不同，三相異步電動機可分為籠式和繞線式兩種?；\式轉子的異步電動機結構簡單、運行可靠、重量輕、價格便宜，得到了廣泛的應用，其主要缺點是調速閑難。繞線式三相異步電動機的轉子和定子一樣也設置了三相繞組并通過滑環(huán)、電刷與外部變阻器連接。調節(jié)變阻器電阻可以改善電動機的起動性能和調節(jié)電動機的轉速。

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