In the Part 2 the practical example will be analyzed.
Let’s look the background and calculate the most common frequencies produced by motor that potentially will be required for further analysis.
- Pawel Lecinski
Broken or fractured rotor bars are found as elevated Pole Pass Frequency (PPF) sidebands of line fre- quency (LF). PPF is calculated using the synchronous speed minus the running speed times the number of poles..
- Mark Koch
- ALL-TEST Pro, LLC