High Voltage , Inc (HVI ) Manufactures high voltage test equipment for testing utility electrical apparatus, HV cables, motors/generators, aerial lifts, wind and solar farms and more. Products include VLF/Tan delta, cable fault locators, ac/dc portable HV hipots, oil testers, high power AC dielectric test sets and parallel resonant sets. Products range from 15 kV DC to 600 kV DC and 10 kV AC to 300 kV AC. HVI is well known for it's rugged , reliable quality and superior customer support and after sales service. You can Rely on HVI.