Tech Tip #4: Motor Circuit Analysis (MCA™) Data Analysis Tip

When a de-energized MCA motor testing program is first implemented it is not unusual to have between 10-30% of the motor systems tested to exhibit one or more alarm condition(s) when testing is performed from the output of the motor starter or motor drive. When a motor system is in an alarm condition, this does not necessarily mean that the motor will fail or that it should be stopped immediately, but that the measured values have exceeded pre-determined limits.

One of the first considerations should be motor criticality. Obviously, the most critical motors should be afforded a higher priority than less critical motors. The second consideration is the type and location of the alarm (is it related to the connections, cable, motor winding, etc.?)


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