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Articles in Industry Publications

Reclosure: How it Happens and What to Do About It

  • July 2014
  • Number of views: 4602
Convention presentation

This paper, presented at the 2014 EASA Convention, addresses how reclosure happens and what measures can mitigate damage potential.

Troubleshooting AC Generators and Alternators

  • June 2014
  • Number of views: 4976
Convention presentation

This paper, presented at the 2014 EASA Convention, covers theory of operation, inspection, operation, and troubleshooting tips for AC generators.

Condition Assessment of Stator Windings in Medium-Voltage Global VPI Machines

  • June 2014
  • Number of views: 7959
Convention presentation

This paper, presented at the 2014 EASA Convention, describes research done by EASA service shops on the effectiveness and practicality of using offline partial discharge combined with a dielectrics characteristic test to evaluate the consolidation of stator windings in medium voltage machines manufactured by GVPI.

Assessing Impeller Damage

  • June 2014
  • Number of views: 7930
Convention presentation

The impeller is generally the most difficult pump component to repair and the most expensive to replace. This paper looks at case histories of failed pumps and the steps to determine the cause of failure.

Mitigating Harmonics and Detrimental Waveforms Caused by VFDs

  • June 2014
  • Number of views: 5104
Convention presentation

This paper, originally presented at the 2014 EASA convention, deals with understanding IEEE Std 519 and various mitigation methods in order to meet those recommendations. It also reviews the types of filtering that is available to reduce the reflected waves, first turn insulation stress, and common mode voltages seen at the motor terminals.

Failure Analysis of Shafts and Fasteners

  • June 2014
  • Number of views: 7771
Convention presentation

This technical paper, presented at the 2014 EASA Convention, will help you understand how and why shafts and fasteners fail.