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
Employment Opportunities
Contact Us
Representing Doble Engineering since 1982.
South Dakota • North Dakota • Colorado • Montana • Nebraska • Wyoming

ETMI can install and maintain Doble's IDD, Intelligent Diagnostic Device for Bushings and CTs.
Since ETMI uses all Doble test instruments, we can provide comprehensive field training.

Doble Engineering Company is the world leader in apparatus maintenance and power management for energy delivery. Their decades of unsurpassed cumulative knowledge and field-testing experience have enabled them to develop diagnostic test instruments, which accurately assess electrical apparatus condition. Engineered to perform consistently despite rough handling in transport and under adverse conditions Doble instruments are legendary.

For more information, visit Doble Engineering.

Contact our office @ 605-787-4688 to arrange your on-site demo.

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