A Deep Dive into Motor Electrical Faults
I recently wrote an article on Motor Electrical Faults which you can find here 👇️
In summary…
Condition monitoring for detecting motor electrical faults can be helpful in determining motor health. Identifying these faults requires the understanding of multiple frequencies generated by the physics around the design of each motor being monitored. Knowing the line frequency going to the motor and the rotating speed of the motor greatly simplifies the process of collecting these critical frequencies.
The vibration signatures are well-known and documented for the specific electrical faults discussed. In practice, often the signatures are not clearly obvious on what specific fault exists. It is suggested to use additional testing methods to validate and further specify the exact fault type. Combining these methods results in a highly accurate definition on the type of fault and it’s maturity level.
Some of the best value of condition monitoring for motors is obtained by ensuring the motor is operating at a state that prevents fault development. This is done by ensuring motors are operating at the correct temperature, the bearings are in a healthy state, and no additional external forces are being subjected to the motor. Additional value is added by providing key data to determine the likely cause of fault development or failure. This aids in the prevention of recurring faults and reduces direct maintenance costs.
How do you prevent motor electrical faults?
Comments
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@Cliff West Impressive article! Thanks for passing it along. The Mobius video is truly outstanding, and it's fascinating how vibration analysis can uncover electrical problems in motors. I'm also quite intrigued by tools like the Bake EXP4000, which seem to be game-changers in detecting motor defects. This model's capability to assess power quality, rotor bar condition, connections, eccentricities, and shaft alignment is indeed remarkable.
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Thank you @Jorge Murillo . The EXP4000 is definitely something I could have used in my previous positions. I had many intermittent motor failures that took me way too long to figure out! Thanks for posting this info.
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