Ensuring Reliability through Preventive Maintenance
Harrington Electric Co.’s EPM+ service is proactive Electrical Preventive Maintenance to ensure the reliability and safety of a facility’s electrical system.
Electrical system integrity is achieved by routinely testing and maintaining the electrical distribution equipment.
Electrical problems cannot be observed visually – therefore we utilize the following methodologies to maintain system integrity:
Infrared Thermography
To identify hot spots of operation, usually due to poor connections or high ampacity.
Megger Testing
Of distribution equipment, motors, and feeder cables.
Hi-Pot Testing
To confirm the insulation integrity of medium voltage equipment and cables (when appropriate).
Ductor Testing
Contact resistance testing of electrical contacts (at circuit breakers, switches, and starters).
Ultra-Sonic Testing
To search for tracking (to identify and mitigate possible fault paths).
Circuit Breaker Testing
Both primary and secondary current injection.
Transformer Turns-Ratio
To track the integrity of transformer windings.
Transformer Oil Sample Testing
To monitor the dielectric strength and chemical stability of the transformer coolant.
