The operating principle of Slip Ring Motors

Slip ring motors, also known as three-phase winding rotor AC asynchronous motors, must be connected the series resistant or series electric reactors in the rotor circuit of the slip ring motor to reduce the starting current, increase the starting torque, and improve the power factor, and improving Motor stating performance effectively.

Therefore, in mechanical equipment with large capacity and high requirements for rotational torque, this kind of motor is usually selected for dragging.