July 25, 2019
Below is a 2 minute clip of an hour long presentation given by Todd Hatfield during the 2018 RPM Symposium. Part 6 of this 8 part series focuses on the redesign and rewind of the stator for the 5500HP, 13,200v, synchronous motor. This video will describe: The new engineered stator winding design and CAD drawing Using …
July 23, 2019
In 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 …
July 17, 2019
Below is a 10 minute segment from an hour long presentation given by Todd Hatfield. In this clip, Todd Hatfield will go over the mechanical design of the shaft and rotor and how HECO assembled it all together. The presentation below discusses: Design assessment to see how to fit a larger shaft in the rotor …
July 15, 2019
In part 3 of this case study, Todd Hatfield will be discussing how HECO re-engineered the electrical and mechanical design of the surplus motor to match the 5500HP, 13,200v original motor. This 13 minute presentation will go over: On-site laser measurements using FARO technology Determining challenges such as How the spare motor would fit into …
July 11, 2019
For part two of the series, Todd Hatfield will be reviewing the dismantled surplus motor and explaining some of the on-site findings for the 5500HP , 13,200v, Synchronous Motor. In this video segment, you will see: The replacement motor’s shorting ring and it’s unique placement on the motor Data collected on the replacement motor’s stator and rotor …
July 9, 2019
The video below is a segment from an hour long presentation given by Todd Hatfield, Senior Electrical Engineer at HECO – All Systems Go, at the 2018 Reliability, Process, and Maintenance (RPM) Symposium. This is the first of an 8 part article series that will be coming out twice a week over a 4 week …
July 2, 2019
An informative video about AC Synchronous Motors Below is a 5 minute video from an hour long presentation given by Todd Hatfield, Senior Electrical Engineer at HECO – All Systems Go, during the 2018 Reliability, Process, and Maintenance (RPM) Symposium. This clip covers the basis of synchronous motors and how they differ from induction motors. …
June 27, 2019
There appears to be a trend happening in industry that needs to be looked at in greater detail and I hope to shed some light on this subject. We are all so quick to repair the motor, pump, gearbox, or fan when a failure occurs; however, we hardly ever spend time looking at what the …
June 13, 2019
There are a few of us “old timers” left around who can remember our first analyzer. It was free, and we thought we could solve anything. It was our very own brain. With the touch of the hand, chunk of broomstick, or long screwdriver, by listening we could solve any issue and predict an impending …
June 5, 2019
It is standard to see the “frame” size on every electric motor nameplate, but do you understand what that frame means in regard to the mounting of the motor? Many have been in the situation where you needed a specific frame only to realize it was made with a special shaft or has a mounting …
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