General Inspection / Cleaning / Lubrication	Calibration and Repair of Protective Relays
Complete Overhaul	System Tests for Pilot Wire, Differential, Distance, Ground Fault, Zone Interlocking, and Other Relay Systems
Time Travel Analysis	GPS synchronized end-to-end testing of communications assisted schemes such as transfer trip, phase comparison, and directional comparison systems
Contact Inspection and Alignment	Meter and Transducer Testing
Current Path Low Resistance Tests, including Contacts	Watthour and Demand Meter Calibration
Charging / Closing Mechanisms: Solenoid, Hydraulic, Spring Charging	Pulse Initiator System Tests and Retrofitting
Insulation Resistance Tests	Primary Injection of Current Transformer Circuits
Power Factor Tests	Instrument Transformer Polarity, Ratio, and Burden Tests
Puffer and Blowout Coil Inspection	Electromechanical / Solid State / Digital Relays
Arc Chute Inspection / Repair
Vacuum Bottle Integrity Tests
Oil Testing	Insulation Resistance Testing
	High Potential Testing
	Synchronous Motor Exciter Circuit Testing
General Inspection / Cleaning	Synchronous Motor Control Testing
Power Factor Testing	Starting and Acceleration Recording
Insulation Resistance Testing	RTD Circuit Testing
Winding Resistance Testing
Turns Ratio Testing
Sudden Pressure Relay Testing	General Inspection / Cleaning
Pressure Relief Device Inspection	Bus Insulation Resistance Testing
Leak Testing	Low Resistance Testing
Nitrogen Purging	Primary Current Injection
Oil Analysis	Battery Charger Inspection and Testing
Combustible Gas Analysis
Load Tap-Changer Control
	General Inspection / Cleaning / Lubrication
	Operating Mechanism Inspection / Repair
High Potential Testing	Complete Overhaul
Shield Continuity and Resistance Tests	Solid State Trip Unit Retrofitting
Correct Shield Grounding for Ground Fault Systems	Contact, Current Path Low Resistance Tests
	Insulation Resistance Tests
	Series Trip Unit Calibration by Primary Injection
Load Testing	Solid State Trip Unit Calibration by Primary and / or Secondary Injection
Acceptance Testing
Repair
General Maintenance