Evergreen High Voltage

High-Voltage Testing Equipment for the Power Industry

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Evergreen High Voltage (EHV) manufactures high-voltage test equipment for electrical equipment manufacturers in the power industry, electrical utilities and research laboratories.

High-voltage testing equipment for the power sector

EHV's custom designed, innovative products are both high-quality and low-cost. The company achieves this by controlling all aspects of design, manufacturing, installation and commissioning to create customised designs for specific applications.

The company has many years of experience supplying high-voltage alternating current (AC), direct current (DC), and impulse test and measurement systems.

Its computerized and automated control systems can also be used to update older equipment of any manufacturer.

EHV engineering staff work directly with clients to assure the best solution for every test requirement according to all internationally known standards.

The company offers customized solutions at a competitive price. It does not buy and resell equipment from inexpensive suppliers.

Testing equipment for test circuits, controls and construction

EHV provides testing equipment using the latest technology, best materials and with constant quality control.

The company uses electrical insulation materials from established international suppliers and our control system components are from major global manufacturers.

EHV's work process ensures constant supervision over the manufacturing process.

EHV offers a broad range of test equipment including:

  • DC test systems up to 2,000kV
  • Impulse test systems for any voltage and current
  • AC variable frequency resonant systems
  • AC Variable Inductance resonant systems
  • Dry-Type, PD Free AC systems
  • High-voltage capacitors
  • Measuring systems and digital recorders
  • AC transformer systems for production testing
  • Automated test systems
  • Shielded enclosures for sensitive PD testing
  • Upgrades of older equipment
  • Calibration and Repair services

The company uses cost-effect solutions, ensuring affordable products. It also offers fast delivery time and direct communication with the company owners.

EHV participates in all international standards bodies for testing power apparatus to ensure full compliance.

About Evergreen High Voltage

EHV principals have been in the high-voltage test equipment manufacturing business for over four decades, and have been involved with the invention of modern HV test equipment.

The company takes control of every step of the process from quotation to final equipment commissioning, offering high-quality and long-lasting products.

All designs are created in the USA and can be tailored to client requirements.

EHV has a solid understanding of high-voltage test equipment design and offers solutions to a broad range of industrial product applications.

Contact Details

Evergreen High Voltage
United States of America

Available White Papers


HV Portable Test Systems for Medium Voltage Utility Apparatus 19 May 2017 Evergreen High Voltage is happy to announce the introduction of a new generation of field transportable test systems for testing medium voltage power cables, generators and switchgear without any flammable liquids or transformer oil.


High Power Resonant Systems for Field Testing of Cable 08 March 2017 There are two main methods of testing large capacitive loads: Variable Inductance (VI) Series Resonant Circuits and Variable Frequency (VF) Series Resonant Circuits.