The HV Diagnostics HVA28TD 28kV VLF / DC High Voltage Test Instrument is the smallest VLF /DC unit on the market that includes an integrated Tan Delta (TD) measurement system to perform advanced electrical insulation diagnostics.     

The HV Diagnostics HVA28TD 28kV VLF / DC High Voltage Test Instrument can be extremely useful when performing advanced diagnostics on cable systems as it provides valuable information as to the condition of the cable insulation and shield. The HV Diagnostics HVA28TD 28kV VLF / DC High Voltage Test Instrument automatically performs a TD test, stepping up the voltage at the user prescribed levels (according to the IEEE) and stores the results. 

All test parameters including insulation resistance, capacitance, RMS current and voltage, test durations, voltage steps, tan delta, and standard deviation are all measured and displayed by the HVA28 LCD display or stored to an internal memory.