a three phase squirrel cage induction motor runs slow? list
all possible reasons for such fault.
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Answer Posted / Bhuvnesh Kumar Rawat
A three-phase squirrel cage induction motor running slowly may be due to various factors:n
1. Under-voltage: The voltage supplied to the motor is less than the required value.
2. Overloading: Exceeding the maximum continuous power rating of the motor leads to decreased performance and increased heat generation.
3. Faulty or worn-out bearings: Damaged bearings can cause friction, which affects the motor's rotational speed.
4. Slip in the motor: The difference between the rotor and stator speeds is known as slip. An increase in slip results in a decrease in the motor's speed.
5. Winding faults: Faulty windings or loose connections can cause resistance in the motor, reducing its efficiency and speed.
6. Unbalanced loads: If the load on each phase of the motor is not evenly distributed, it may lead to a decrease in performance and an increase in vibration.
7. Poor lubrication: Insufficient or improper lubrication can cause increased friction, resulting in reduced speed.
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