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Motor Circuit Analysis (MCA)
Motor Circuit Analysis (MCA) is the most powerful CBM technology for evaluating the health of your electrical motor and can be an important tool to deploy in your journey to Reliability Excellence and Maintenance Excellence. In the hands of a capable analyst, Offline (Static) and Online (Dynamic) testing helps a company effectively ensure that their new or repaired motors meet standards, evaluate and define the integrity of their motor’s insulation system, identify and locate power related issues and load problems, define rotor bar issues and measure distortion. MCA can help companies improve equipment reliability, increase production capacity, and effectively provide information leading to increased energy efficiency.
Further, used in conjunction with other CBM technologies, MCA can help enable the Proactive Work Flow Model by identifying defects in advance. Corrective work can then be planned and scheduled, generating higher reliability gains.
What are some of the more common failure modes that MCA detects?
When used in conjunction with other CBM technologies, Motor Circuit Analysis can help enable the Proactive Work Flow Model by identifying defects in advance. Corrective work can then be planned and scheduled, generating higher reliability gains. Common failure modes that MCA detects include:
- Current imbalance and loading issues
- Power quality disturbances (harmonics, voltage imbalance, power factor anomalies)
- Circuitry and motor insulation breakdown/degradation
- Rotor damage (loss of torque, loss of HP)
- Loose motor foundation (soft foot, sprung foot)
- Eccentricity in rotors (motor, sheaves, fans)
- Belt defects
- Vane/Blade pass
- Gearing defect (broken tooth, backlash, looseness)