Which starter is used for slip ring induction motor of high ratings?
Which starter is used for slip ring induction motor of high ratings?
1. In a slip ring induction motor with a high rating, a rotor resistance starter is used.
2. It employs an external resistance/phase in the rotor circuit in order for the rotor to generate a high torque value.
3. When the external resistance is at its highest, high torque is produced at low speeds.
4. Initially, supply power is linked to the stator via a three-pole contactor, and an external rotor resistance is applied at the same time.
5. The high resistance limits the starting current, allowing the motor to start safely even while under a heavy load.
6. When resistance is added to the rotor circuit of a slip ring induction motor, the starting current is reduced but the beginning torque is increased when compared to straight-line starting.
Hence, a rotor resistance starter is used for slip ring induction motor of high ratings.
1. In a slip ring induction motor with a high rating, a rotor resistance starter is used.
2. It employs an external resistance/phase in the rotor circuit in order for the rotor to generate a high torque value.
3. When the external resistance is at its highest, high torque is produced at low speeds.
4. Initially, supply power is linked to the stator via a three-pole contactor, and an external rotor resistance is applied at the same time.
5. The high resistance limits the starting current, allowing the motor to start safely even while under a heavy load.
6. When resistance is added to the rotor circuit of a slip ring induction motor, the starting current is reduced but the beginning torque is increased when compared to straight-line starting.
Hence, a rotor resistance starter is used for slip ring induction motor of high ratings.
