| Troubleshooting |
| | |
| Problems | Causes | Solutions |
| The motor fails to start | Overload | Reduce load |
| One phase of the supply power breaks down | Check the distribution equipment and the fed circuit |
| Connections of the stator winding isn't correct | Correct the mistakes of windings connected |
| The motor is difficult to accelerate | Overload | Reduce load |
| One phase of the supply power open | Check the distribution equipment and the fed circuit |
| Low voltage and high frequency of network | Improve the condition of the supply system |
| Interturn short circuit or inter phase of stator windings | The insulating resistance of the windings should be checked. Repair it after having asked the manufacturer |
| Connections of the stator winding isn't correct | Correct the mistakes of windings connected |
| Buzzing noise occurs during start of the motor | One phase of the supply power open | Check the distribution equipment and the fed circuit |
| Interturn short circuit or inter phase of stator windings | The insulating resistance of the windings should be checked. Repair it after having asked the manufacturer |
| Connections of the stator winding isn't correct | Correct the mistakes of windings connected |
| Buzzing noise occurs during operation | Overload | Reduce load |
| One phase of the supply power open | Check the distribution equipment and the fed circuit |
| Interturn short circuit or inter phase of stator windings | The insulating resistance of the windings should be checked. Repair it after having asked the manufacturer |
| Connections of the stator winding isn't correct | Correct the mistakes of windings connected |
| Buzzing noise occurs due to periodic double-slip | Bars of squirrel cage are thin and broken | Repair after having asked after the manufacturer |
| Excessive temperature in operation at no-load | High voltage and low frequency of network | Improve the condition of the supply system |
| Excessive temperature in operation at load | Overload | Reduce load |
| One phase of the supply power open | Check the distribution equipment and the fed circuit |
| Connections of the stator winding isn't correct | Correct the mistakes of windings connected |
Information 
