Three-phase motor dual-speed 2Y / △ connection speed control circuit (a)

Published:2011/7/10 2:54:00 Author:Lucas | Keyword: 2KMH, Three-phase motor, 2Y / △ connection | From:SeekIC

There are three AC contactors used in the circuit. The button STH is the high-speed control button. When it is pressed, AC contactor 1KMH and 2KMH suctions at the same time, thus driving the motor M for high-speed (2Y) operation. The button STL is the low-speed control button. When it is pressed, AC contactor KML suctions to drive the motor M for low-speed (△) operation. When the button STP is pressed, the motor stops running. FT is a thermal relay for overload protection.



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