The resistance value of 9 times higher than of a slip ring rotor resistance is connected externally to experience maximum starting torque.
Slip ring motor rotor resistance starter.
Starting of slip ring induction motors.
Slip ring induction motor speed control the speed control of this motor can be done using two methods which include the following.
For starting the slip ring motor the rotor resistance starter is used whereas the slip ring motor does not require any starter.
Rev for three phase motor connection power and control diagrams.
Increasing the resistance in the rotor circuit has two effects.
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It reduces the start current 2.
Can i bridge out the slip rings and use a soft starter on a slip ring motor.
These motors are usually started with full line voltage applied across its terminals.
The starting torque of the slip ring motor is high whereas in squirrel cage motor it is low.
As these motors have external resistance connected to its rotor circuit the value of starting current is adjusted or kept minimum by increasing the resistance of the rotor circuit.