Motor current signature analysis (MCSA) has proven to be a highly valuable predictive maintenance tool. Although it is a relatively young, rarely utilized technology, it is rapidly gaining acceptance in industry today. Mechanical faults related to belts, couplers, alignment and more are easily found through the use of a demodulated current spectrum. MCSA is simply the process by which motor current readings are recorded and analyzed in the frequency domain. It has been around since 1985 and proven itself well over the years in locating rotor faults and air gap problems in motors.
FAULTS THAT CAN BE DETECTED WITH MCSA
The major faults of electrical machines can broadly be classified by the following
A. Static and/or dynamic air-gap irregularities.
B. Broken rotor bar or cracked rotor end-rings.
C. Stator faults (opening or shorting of one coil or more of a stator phase winding)
D. Abnormal connection of the stator windings.
E. Bent shaft (akin to dynamic eccentricity) which can result in a rub between the rotor and stator, causing serious damage to stator core and windings.
F. Bearing and gearbox failures
Condition Monitoring- Condition monitoring (or, colloquially, CM) is the process of
Increased electrical system safety Reduction
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The reliable delivery of electrical energy in a form that enables electrical equipment
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Field Balancing By balancing machines under operating conditions we reduce
Fire in any occupancy has potential to cause severe damages to both life