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Electrical Test Specialists 

Electrical Testing Services

Acceptance Testing  Commissioning    Maintenance

Testing performed in accordance with NETA/ ANSI, IEEE

Insulation Resistance Testing/ Megger-ohm Testing 

VLF,  Tan Delta/ Power Factor /Tip-up Testing

Hi-pot Testing with VLF , PD, and Tan Delta

Breaker Testing, SF6 Gas Testing and Servicing

Transformer Maintenance, Repairs, and Upgrades

Relay Upgrades and Testing, Commissioning and Troubleshooting
Arc-flash studies, Short-circuit / Coordination studies 
Power Quality Monitoring / Solutions
Training and Consulting
Installation of permanently-mounted power quality monitors
Power factor analysis and correction
Harmonic modeling and analysis
Grounding Resistance Testing / Fall of Potential / Equipotential
UPS Start-up and Commissioning

Online Partial Discharge Testing

Infrared Thermography / IR scans

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Electrical Test Equipment

Sales  |  Support  |  Rental

Nemec Industries LLC is the USA and Canada Master Distributor and Importer for Sonel Test Equipment. Based in Poland, this 30-year old electrical test equipment manufacturer is a world leader in electric power test equipment offering outstanding function and value. In Atlanta, GA we stock a large inventory of Electrical Test Equipment for sale and for rent. Sonel Test Equipment comes standard with free software, one year factory warranty which is extendable.  The price, quality, and features combination of Sonel is simply unmatched by any competitors. We invite you to explore the whole line of Sonel Test Equipment and accessories. Find the electrical testing tools that are right for you! 

The embedded website to the left and on the Test Equipment page here will allow you to browse all products and accessories. To place an order, please visit or call (770) 331-1393 or email

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NEMEC specializes in Online Power Testing technologies which do not require outages or downtime. Partial Discharge Testing and "in-service" testing of MV and HV power equipment allows you to inspect questionable equipment and pinpoint problems where insulation degradation will cause an imminent failure. .Our in-service testing methods includes five different types on OLPD sensors including UHF, Ultrasonic, AE contact, HFCT, and TEV sensors, We provide corona cameras inspections, Infrared Thermography, and power quality meters and monitoring. Furthermore we provide not only the testing service, but we also sell the test equipment and provide training so you can perform your own tests!

Online Power Testing Solutions

Infrared | Partial Discharge | Corona  | Acoustic Imaging

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Electrical Contracting

EV Charging | Solar  | Medium Voltage | Substation

Engineering | Construction | Project Management

  • Industrial Power Systems Design and Construction

  • Transformer and Switchgear Install and Upgrades

  • Underground Utility Construction

  • MV and HV Cable Terminations 

  • Solar Plants

  • EV Charging Station 

  • Renewable Energy

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Partial Discharge - Corona - Infrared - Power Quality

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Straight from the Source

"Nemec was able to terminate our MV cables and get our project finished on time. You were professional and flexible with our changing schedule. Thank you, Nemec Industries, It was a pleasure working with you. We really couldn’t have done it without you."

Bob Kemp, Control Solutions Inc, Chief Estimator

"NEMEC was able to test our entire 12kV and 2.3kV distribution system in 3 days and they did it while the system stayed online during normal service. They helped us to identify several electrical issues that put our plant at risk. We were able to resolve those issues with minimal interruption. Thank you, Louis Nemec and Ed Casto for the work you have done. "

Richard H, Constellium Aluminum Products, Project Engineer

"Louis was able to teach us everything we needed to know to perform partial discharge testing and cable testing, transformer testing and breaker testing. He also provided us with a great deal on the test equipment we need to get our jobs done. "

Kevin Ray , Electrical Test Technician

"NEMEC introduced several pieces of electrical testing technology that we continue to use as part of our operation and maintenance of SF6 circuit breakers"

Rick White, CPS Energy

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