Haefely AG, a company of the group Pfiffner.

The market leader for high-voltage test equipments and systems.

–       Tests systems for laboratory, production and on site
–       Impulse voltage and current generators
–       AC and DC HV test systems including resonant test systems
–       Capacitance and tan δ measuring equipments
–       Partial discharge detectors (including alternative for Robinson)
–       Complete solutions for cables and transformers testing.

Haefely AG promotes also a range of products under the brandname of TETTEX.

The Swiss made precision since 1904 !

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