Marketplace and Quality Assurance Presentation - Vincent Chirchir
9.3.2
1.
2.
3.
4.
5.
6. Cause Effect Likely damage
Non symmetrical supply Non uniform wear of Bearing damage
voltage. bearings.
Poor balancing.
Poor alignment of the drive.
Incorrectly installed drive.
Extreme starting conditions. Over current. De-soldered rotor bars.
Stalled rotor. Overheating of the Burnt out stator
Long term overload. windings. windings.
Under voltage.
Un-permissible intermittent
operations.
Ineffective cooling. Excessive heat build Burnt out stator
Excessive ambient up in motor. windings.
temperature.
Single phasing. Asymmetrical over Individual windings or
Excessive voltage asymmetry. current, winding parts burnt out.
Earth fault. Excessive heat build
Turn fault. up depending on
Winding fault. motor size and load.
7. Cause Effect Likely damage
Non symmetrical supply Non uniform wear of Bearing damage
voltage. bearings.
Poor balancing.
Poor alignment of the drive.
Incorrectly installed drive.
Extreme starting conditions. Over current. De-soldered rotor bars.
Stalled rotor. Overheating of the Burnt out stator
Long term overload. windings. windings.
Under voltage.
Un-permissible intermittent
operations.
Ineffective cooling. Excessive heat build Burnt out stator
Excessive ambient up in motor. windings.
temperature.
Single phasing. Asymmetrical over Individual windings or
Excessive voltage asymmetry. current, winding parts burnt out.
Earth fault. Excessive heat build
Turn fault. up depending on
Winding fault. motor size and load.
8. Cause Effect Likely damage
Non symmetrical supply Non uniform wear of Bearing damage
voltage. bearings.
Poor balancing.
Poor alignment of the drive.
Incorrectly installed drive.
Extreme starting conditions. Over current. De-soldered rotor bars.
Stalled rotor. Overheating of the Burnt out stator
Long term overload. windings. windings.
Under voltage.
Un-permissible intermittent
operations.
Ineffective cooling. Excessive heat build Burnt out stator
Excessive ambient up in motor. windings.
temperature.
Single phasing. Asymmetrical over Individual windings or
Excessive voltage asymmetry. current, winding parts burnt out.
Earth fault. Excessive heat build
Turn fault. up depending on
Winding fault. motor size and load.
9. Cause Effect Likely damage
Non symmetrical supply Non uniform wear of Bearing damage
voltage. bearings.
Poor balancing.
Poor alignment of the drive.
Incorrectly installed drive.
Extreme starting conditions. Over current. De-soldered rotor bars.
Stalled rotor. Overheating of the Burnt out stator
Long term overload. windings. windings.
Under voltage.
Un-permissible intermittent
operations.
Ineffective cooling. Excessive heat build Burnt out stator
Excessive ambient up in motor. windings.
temperature.
Single phasing. Asymmetrical over Individual windings or
Excessive voltage asymmetry. current, winding parts burnt out.
Earth fault. Excessive heat build
Turn fault. up depending on
Winding fault. motor size and load.
