Detection broken rotor bar in cage induction motor

The problem of diagnostic is tightly related to the maintenance, utilizing economic factors that are difficult to evaluate. The problem of the broken bars usually refer to the gradual deterioration of the motor that can lead the motor in failure if undetected. Monitoring of the phase current can provide indications on the motors state. The fault affects the spectrum current signal while the induction machine is sufficiently loaded and generally we can extract form that the number of the broken bars