Varsatech Instruments Co offers High Potential Insulation Resistance with 500VA AC Output. Varsatech Instruments Co also offers various types of electronic test and measuring instruments. The High Potential Insulation Resistance with 500VA AC Output, Model 7700, has safety circuit protects the operator from shock hazards. The High Potential Insulation Resistance with 500VA AC Output has 50 memories that can be stored and recalled. The High Potential Insulation Resistance with 500VA AC Output enables up to 20kV AC or DC high potential testing for manufacturers with higher voltage testing requirements.