The motor is a 1hp, 1765rpm, 460V, 60Hz motor. The data collected was at 12kHz sampling rate, 3 averages, and 65,536 block with the low frequency dataset sampling to allow 180Hz spectra and the high frequency to 6kHz. The motor has 28 rotor bars and 36 stator slots. With this information can you evaluate this machine?
First is the low frequency data set. What is the true running speed of this motor?
Next is the high frequency dataset which we’ve limited to 1500 Hz to cover everything including eccentricity and stator slot issues. What can you find based upon our articles in ESA or your experience with programs such as vibration? Enjoy!