16/02/2022
All electric motors have their predetermined life span; however, this is dependent on proper maintenance. Here are 5 causes and solutions to motor fails that could help you.
1. Electrical Overload
Electrical overload is caused by an excessive current flow within the motor windings, which the motor is unable to carry efficiently and safely.
Possible solution: Electrical overload can be prevented by installing effective over-current protection which will detect overcurrent and interrupt supply.
2. Low Resistance
The most common cause of motor failure, and arguably the most difficult to overcome, is low resistance. – which is caused by the degradation of the insulation of the windings due to conditions such as overheating, corrosion, or physical damage.
Possible solution: The insulation should be regularly inspected for signs of wear and replaced before low resistance is able to cause failure.
3. Over-Heating
Around 55% of insulating failures in motors occur due to overheating. It can be caused by poor power quality, or a high temperature operating environment.
Possible solution: Ensuring the operating environment is kept cool if possible will help prevent breakdowns.
4. Contamination
Contamination from dust, dirt and chemicals is one of the leading causes of motor failure. This can dent bearing raceways and balls, leading to high levels of vibration and wear.
Possible solution: Preventing contamination is relatively easy. Keep work areas, tools and fixtures as clean as possible to help eliminate the chance of contamination entering the motor.
5. Vibration
Vibration can lead to many issues with the motor and can eventually cause the motor to fail prematurely. Vibration is often caused by the motor being positioned on an uneven or unstable surface. However, vibration can also be a result of an underlying issue with the motor, such as loose bearings, misalignment, or corrosion.
Possible solution: Motors should be checked regularly for vibration, using a motor analyzing tool. In order to reduce vibration, ensure that the motor is positioned on a flat, stable surface.
