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Condition Monitoring

Rotor Bar Analysis Using Electrical Signature Analysis

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

PPF

Rotor Bar Analysis Using Electrical Signature Analysis

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