YCT series electromagnetic speed-regulating motor is the main sub-series of the Y series asynchronous motor which was organizational designed by Ministry of Machine-Building Industry. The speed-regulating motor consists of driving motor (Y series motor), electromagnetic slip clutches and controller. It can be used in constant torque loading application, and especially fits for decreasing torque loading application (for example, centrifugal water pumps and fans). And it has obvious energy saving results.