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Case Study 5500HP, 13,200v, Synchronous Motor: (Part 5) Electrical Design of Rotor

07/23/2019

large electric motor repair, 5500HP 132000v motor - Rotor with coils and polesIn part 5 of this case study, Todd Hatfield will be reviewing the electrical design of the rotor. Below is a short 3 minute video showing the steps involved in creating the new coils for this 5500HP, 13,200v, Synchronous Motor's Rotor.

 The video below will discuss: 

  • The decision to keep the coil design and duplicate it or to come up with a new and improved design
  • Temperature differential of about 10º C - the insulation life "doubles" for every 10º C decrease in temperature
  • The CAD drawing of field coils that were mounted on the spider
  • Rewinding the new rotor coils and mounting the poles with the new coils

Before starting the video, make sure you are all caught up with the series starting with...

  

 

 

Download Reliability Mantenance is Good Medicine

 

Todd A. Hatfield

HECO – All Systems Go

269-381-7200

thatfield@hecoinc.com

 

About the author:

Todd Hatfield is a Senior Electrical Engineer at HECO. He has over 35 years' experience in generator and electric motor repair and engineering. Todd has a BS in Electrical Engineering, and his areas of expertise are: electrical and mechanical motor redesigns and engineering, root cause of failure analysis, and quality electric motor rebuilding.

 

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