About the Author
Noah has over twenty-five years of broad operations and electrical systems maintenance experience in industrial, commercial, and military settings ranging from nuclear submarines to world class amusement parks. His experience includes high and low voltage, AC and DC, power generation, power distribution, motors, and motor controllers. Noah is currently in charge of product development for new and existing PdM technology at PdMA Corporation.
Noah is a graduate of the University of the State of New York and the Naval Nuclear Power School and Training Unit. He is a Certified Maintenance Reliability Professional, with field experience in motor circuit analysis, current signature, power analysis, thermography, vibration analysis, oil analysis and ultrasonic testing.
If the motor has deep groove antifriction bearings, then how can we identify the magnetic center?
If the motor has AF bearings, it would not have a magnetic center.
Very good question, I am facing the same issue.
In the deep groove antifriction bearings, there is no any magnetic centre line at coupling side.
The reason behind it is bearings is axially lock at coupling side, hence there is no any axially float generated.
During a decouple trail, what shaft position should a motor with both journal bearing indicate? Will the shaft beacome steady at magnetic centre mark or keep axially floating?
Can motor still show 5th harmonic in its solo run data?