Tettex logo

HAEFELY is our close partner for high voltage test equipment and instrumentation. HAEFELY is a well-known brand and has been founded by the pioneer Emil Haefely in 1904. Today, HAEFELY is the international leader in high voltage test equipment, unmatched in quality, reputation, and technology. The management and ownership of HVT have long been associated with HAEFELY and also served in various senior technology and executive positions prior to the founding of HV TECHNOLOGIES, Inc.

Tettex Instruments has been a part of the HAEFELY family since 1995. World-renowned for their precise electrical measurement instruments, HAEFELY continues to market these products under the Tettex logo.