FM-3902V-T

FM-3902V-TFM-3902V-T

要改变输入频率、电机转差率、电机磁极对数，任意一项即可以改变电动机转速，改变电机磁极对数调速是极的，即选用多极电动机，但多极电动机绕组比较复杂。
　　而改变电机转差率调速又是不经济的，对鼠笼型异步电动机只有改变其频率，才是既经济又现实的调速方式，所以通过改变电动机工作电源频率达到改变电机转速的目的，被称为变频调速，而变频器就是主要依靠这个起作用的装置。　
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张可可（销售工程师）
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:  1640913454  2859764516

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