Motor Eccentric Rotor Fault by Ultrasound and Vibration
An unusual electrical fault was found on a motor rotor using ultrasound and vibration analysis, revealing an eccentric rotor at 120 Hz.
Like what you see?
Sign up to share your own knowledge, like posts, and engage with the community!
The Partnered Ultrasound Team found an unusual electrical fault on this motor rotor using both the ultrasound and vibration analysis capabilities on their SDT340!
They found an eccentric motor rotor, at 2 times line frequency, of 60 Hz, equalling 120 Hz.
Eccentric rotors produce a rotating variable air gap between the rotor and stator, which includes pulsating vibration (normal between 2LF, and the closest running speed harmonic).
Post Information
Category:
Ultrasound Case Study
Language:
English
Reading Time:
1 min
Tags
Original Authors
SDT Ultrasound Solutions
Source:
https://www.lin...