imbalances

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Five Minute Facts
  • Motor Testing

How High Resistance Imbalances Can Damage Your Electric Motors

A small, but critical, motor in a pulp and paper mill exhibits a changing and rising resistive imbalance indicating a power circuit anomaly. If the motor fails, the loss of production costs could be up to $20,000 per hour. Follow along as they test and investigate the problem.

Two Minute Tips
Drive Input Imbalances by Noah Bethel of PdMA Corporation
  • Motor Testing

Drive Input Imbalances

Current imbalances are sometimes referred to as a burglar alarm; generally problematic and need further diagnosis. However, imbalance at the inverter input under lightly loaded conditions is a normal phenomenon of the electrical circuit..

Two Minute Tips
Machine Health Decisions
  • Vibration Analysis

Good Decisions Require Good Information

Monitoring equipment requires an understanding of what you are looking for and matching sensing equipment to these signatures. Learn about how to best match sensing tools with the types of equipment you are monitoring and the vibration signals they generate as they age..

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Two Minute Tips
  • Motor Testing

Troubleshooting a Running Motor

This tip discusses troubleshooting the motor and machine train with the motor still running. The fault zones specific to the physical motor are the stator, rotor and airgap....

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The Trifecta of Motor Maintenance by Noah Bethel | PdMA Corporation
  • Motor Testing

The Trifecta of Motor Maintenance

Using the same concept of a trifecta (three factors for success), this article provides companies with the winning strategies of motor maintenance, focusing on the three reliability tasks for electric motor testing and the order in which they should be applied.

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