Motor Testing
Lessons Learned from Modern Motor Testing
This corn wet milling facility, which processes about 14,000 bushels of corn each day, pulled this 10HP motor from one of their conveyor belts...
- Richard Scott
- ALL-TEST PRO
The Application of Modern Medium Voltage Variable Frequency Drives
Pumps, fans, and compressors account for over 60% of loads in industrial and processing industries, while medium voltage motors over 200 horsepower account for 1% of the motor population and 45% of electric motor energy consumption...
- Howard Penrose
- MotorDoc LLC
Special Application Motors: DC Motor
There are three types of DC motors: Series, Shunt, and Compound. They are similar in the components they have, but dissimilar in the way the field coils are connected...
- Noah Bethel
- PdMA Corporation
Special Application Motors: Wound Motor Rotors
Many industrial applications require three-phase motors to operate at variable speeds...
- Noah Bethel
- PdMA Corporation
Forensic Analysis of Electric Machines
A tremendous amount of time, productivity and production can be lost using improper troubleshooting and evaluation techniques...
- Howard Penrose
- MotorDoc LLC
What Are Motor Greasing Best Practices?
In this interview, Clay discusses the steps involved in creating a structure and following the best practices for motor greasing...
- Clay Allen
- Mosaic
The Importance Behind The Addition of Annex D In IEEE Standard 43-2013
The standards working group behind the present edition of IEEE Std 43 made significant changes in the overall standard, including modifications to temperature normalization to 40°C. This was done to accommodate the many changes and observations in insulation chemistry and combinations over the past decades...
- Howard Penrose
- MotorDoc LLC
Rotor Evaluation Using MCEMAX®: In/Rush-Start/Up
The start-up of a motor is a stressful event. High current, rapid temperature rise and mechanical stress all create a perfect environment to evaluate the health of your rotor and expose any hidden anomalies...
- Noah Bethel
- PdMA Corporation
Rotor Evaluation Using MCEMAX®: Pole-Pass Frequency (Fp)
Rotor bars on the rotor of a squirrel cage induction motor act as a shorting mechanism to the magnetic flux emitted from the steel rotor laminations...
- Noah Bethel
- PdMA Corporation