Motor Testing

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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....

Two Minute Tips
  • Motor Testing

Static Eccentricity Faults Using Electrical Signature Analysis

Static Eccentricity (air gap) is a fault that is created when the rotor is not in the magnetic center of the stator. Static eccentricity can cause an increase in operating current, overheating, energy losses, and overloading of bearings...

Two Minute Tips
  • Motor Testing

Delaying End of Life

Everything, including motors, has an end of life. Our reliability goal is to identify conditions conducive to failure and correct them so the end of life doesn’t come early...

Five Minute Facts
  • Motor Testing

PI Testing “The Fire Hose Analogy”

A Polarization Index is affected by multiple current components that occur simultaneously. This instructional presentation provides a simple analogy to make this complex test easier to understand...

Two Minute Tips
  • Motor Testing

Electric Motor Reliability Trifecta – Training Cont’d

Keeping the focus on Trending, in Trending Part 1 we discussed qualitative trending and focused on the change in appearance. This week we switch from qualitative to quantitative trending...

Two Minute Tips
  • Motor Testing

Stator Mechanical Faults Using Electrical Signature Analysis (ESA)

A stator mechanical fault is created when the stator core becomes loose within the motor frame, or if the windings are loose between the stator slots. A loose stator core or winding over a period of time will cause...

Case Studies and Stories
  • Motor Testing

Increased Revenue Results from Expanded Testing Capabilities

Growing companies typically make investments in state-of-the-art tools and equipment so that they may expand their capability to serve their customers. One such company, Koontz-Wagner Services, has been able to capitalize upon several opportunities since acquiring new energized and de-energized motor testing equipment last year...

Two Minute Tips
  • Motor Testing

Electric Motor Reliability Trifecta – Trending

For this tip we focus on qualitative trending of data. Remember trend is your friend and by qualitative trending we are talking about a change in the appearance of the data rather than an amplitude value change.....

Five Minute Facts
  • Motor Testing

Calculating Eccentricity Frequencies

Eccentricity, as related to electric motors, simply means that the rotor is not radially or axially centered in the stator magnetic field. This instructional video demonstrates how to calculate these frequencies..

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