Electrical Signature

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Two Minute Tips
  • 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..

Two Minute Tips
  • Condition Monitoring

Evaluation of Wound Rotor Motor with Electrical Signature Analysis

The primary difference between an induction motor and a wound rotor motor is that the rotor has windings, slip rings and a variable resistance in order to vary speed or soft start an application...

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  • Condition Monitoring

Improve Electro-Mechanical Reliability Using Electrical Signature Analysis

Electrical Signature Analysis (ESA) is a predictive maintenance (PdM) technology that uses the motor’s supply voltage and operating current…

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