Serving the Power Industry for over 25 years.
Our Services
Substation Testing & Maintenance
Transformer Field Services
Commissioning Services
Infrared Thermography Scanning
Recloser Maintenance
Voltage Regulator Maintenance
Circuit Breaker Maintenance
Fabrication Services
Protective Relaying Services
Power Quality/Disturbance Analysis
About Us
Facility and Equipment
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Calibration • Testing • Maintenance

Regular inspection and maintenance of relaying is essential in protecting your electrical system from damage due to faults. A peculiar difficulty of protective relays is that the time between operations may be measured in years, during which period defects may have developed unnoticed until revealed by the failure of the protection device to respond to a power system fault.

A quality maintenance and testing program can help reduce mis-operations, nuisance trips, and aid in identifying system coordination issues. The periodic maintenance tests will insure continued reliability, accuracy limits, levels of deterioration of components, correctness in tripping circuit connections, adopted settings and fatal failure of a protective relay.

ETMI utilizes computer controlled test equipment to insure the highest level of accuracy and repeatability.

Electro-Test and Maintenance, Inc – home Doble Equipment Sales Agent Cooper Power Systems Authorized Service Center