Predictive Maintenance
PDMA Motor Circuit Testing
De-energized testing of the motor and its circuit, covering the power circuit, insulation, stator, rotor and air gap, to find developing faults before they shut down production.
What PDMA Motor Testing Does
Invizions uses the PdMA Motor Circuit Evaluator (MCE) to analyze an electric motor and its associated circuit. The MCE is designed for static (de-energized) testing and evaluates five of the six motor Fault Zones: Power Circuit, Insulation, Stator, Rotor and Air Gap. Test data can also be sent to PdMA Corporation for additional analysis and consulting.
Fault Zones Evaluated
- Power Circuit
- Insulation
- Stator
- Rotor
- Air Gap
The Tests
AC Standard Test
A short, comprehensive test of the motor circuit that takes two to four minutes and provides data to evaluate five of the six Fault Zones.
| Power Circuit | Insulation | Stator / Rotor / Air Gap |
|---|---|---|
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|
|
Polarization Index (PI) Test
Provides considerably more information about the condition of the insulation system than a one-minute insulation resistance spot measurement. The PI is the ratio of the ten-minute resistance reading to the one-minute reading, and the test data is graphed so it can be analyzed for acceptance.
MCE Auto Test
Runs the AC Standard and Polarization Index tests together in one automated sequence on AC induction motors.
Where It Fits
Motor circuit testing complements infrared thermography and vibration analysis. Infrared finds hot connections while equipment is running; vibration analysis tracks mechanical condition; PDMA testing evaluates the motor's electrical circuit and insulation while it is de-energized. Together they give your maintenance team a fuller picture of motor health.
Schedule PDMA Motor Testing
Tell us about the motors you need tested and we'll plan the work around your maintenance window.