Motor Current Signature Analysis (MCSA)
MCSA is based on the principle that an electric motor driving a mechanical load acts as a transducer. The motor senses mechanical load variations & converts them into electric current variations are transmitted along the motor power cables. Analysis of the current amplitude can be trended over time to provide an early warning of machine deterioration or process alteration. Analysis involves,incoming voltage,current,current / frequency response,winding resistance,winding impedence,winding inductance,power quality,power factor,input power,reactive power,apparent power,phase angle,insulation resistance,all types of motors rotor eccentricity,cracked,broken rotor bars,casting voids,poor connections,cable faults,motor efficiency & power analysis.
CBM for
HV, MV motors, DC motors, rotor faults, winding faults, etc.
Frequently Asked Questions
Motor Current Signature Analysis (MCSA) is a predictive maintenance technique to assess the health state of the electric motor. MCSA is able to detect various abnormalities, including mechanical faults, bearing wear and insulation degradation.
Using this non-invasive method eliminates downtime that could be unexpected and it helps to prevent costly repairs by alerting you to possible issues as early as possible for timely maintenance interventions.
Vibration analysis will be less effective than MCSA at detecting those defects. Taken in short, vibration analysis is more versatile and will still remain the logical approach in most cases, while MCSA techniques will be ‘privileged’ to particular defects.
MCSA can detect rotor bar damage by analyzing stator current modulation in the frequency domain. It also can identify both dynamic as well as static eccentricities. Manufacturing errors, external mechanical forces or poor handling during installation can each cause eccentricity.
MCSA methodical approach involves collection of the current signals, using data acquisition device and submitting the signals to spectral analysis.
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