Haefely (Tettex) MIDAS micro 2883 Insulation Diagnosis & Analysing System, 12kV, Tan Delta & Power Factor
Haefely FRA 5311 Sweep Frequency Response Analyser. Smallest and lightest system for transformer and rotating machine diagnostics
Haefely IDAS 2823-REF (TD/Power Factor) Highest precision Tan Delta and Power Factor measuring instrument