Motor Testing

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Two Minute Tips
  • Motor Testing

Current Unbalance in AC Electric Motors

Is there a standard for current unbalance in AC motors...

Nine Minutes of Knowledge
  • Motor Testing

Vibration Measurement Techniques for Continuously Varying Speed Machinery

There are a lot of equipment types in industry that exhibit continuously varying speed. This presents a number of challenges to the vibration analyst. If a time sample is collected as the machine is continuously changing speed, the FFT will produce a virtually useless plot...

Two Minute Tips
  • Motor Testing

Voltage Variation in AC Electric Motors

I’ve seen different variations of voltage testing on AC induction motors; however, the motor only really cares about the phase-to-phase voltage...

Nine Minutes of Knowledge
Combined Use of ESA, MCSA and Vibration for Accurate TTFE
  • Motor Testing

Combined Use of ESA, MCSA and Vibration for Accurate TTFE

In this presentation will will discuss the vibration and ESA fault detection of rotor bar faults in three medium voltage compressor motors and how the combined use allowed the risk of catastrophic failure to be assessed...

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