The YCT series electromagnetic andjustable speed motor is one of the derived series from Y series asynchronous motor,which is designed under the organization of the Minstry of Mechaical & Electronic Industries of the PRC The electromagnetic adjustable speed motor is composed of three parts, ie. The driving motor (Y series motor) electromagnetic slip coupling and controller. It is usually used under a constant torque load and is particularly suitable for the use under the load with a decreasing torque such as the centrifugal pump and blower, etc. featuring evident energy-saving efficiency. The speed of the electromagnetic adjustable speed motor can be adjusted uniformly continuously and steplessly within the specified adjustable speed range with an output of rated torque. When the loading torque is changed during the running of the motor, the exciting current of the coupling can be reguated automatically by the speed negative feedback system of the controller so as to keep the output speed free of any variation basically. 1. Free of out-of-control zone; 2. Wide adjustable speed range and stable speed dajustment; 3. With sped negarive feedback automatic regulation system, small speed variation ratio; 4. Large start torque and smooth start performance; 5. Simple construction, reliable and easy for operation and maintenance; 6. Small control power, multi-way control.