The HVA90 features fully automatic or manual cable test sequences for VLF (0.1Hz), DC (±), Cable Fault Conditioning (Burning), and Sheath/Jacket testing with a true symmetrical sinusoidal load independent output waveform across the full load range. It has a large output load capability (up to 10μF) and automatic and integrated load capacitance measurement with optimum frequency selection. The HVA90 has an easy to use menu guided user interface that displays the actual output wave form in real time. Results are stored in the instrument’s onboard memory allowing easy retrieval and download for review and analysis.

The load independent, symmetrical output waveform avoids the potentially destructive space charge effects caused by DC polarization that occurs in aged extruded cables such as XLPE / PE / EPR, causing them to fail prematurely when exposed to conventional high voltage DC or from a test instrument with large non-symmetrical output waveforms. Should a breakdown occur during testing, the actual voltage at which it occurred is displayed and recorded. If cable burning (fault conditioning) mode is activated, the fault resistance can be conditioned to allow easier and less stressful fault location techniques to be applied.

Input Voltage
210-265V 50Hz

Output Voltage
Sinusoidal: 0-90 kV peak, Symmetrical, 64kV rms
DC: ± 0-90 kV
Squarewave: 90kV
Accuracy ± 1%
Resolution 0,1kV

Output Current
0-40mA (Resolution 1 μA)
Accuracy ± 1%

Resistance Range
0.1 MΩ ….5 GΩ

Output Frequency
0.01….0.1Hz in steps of 0.01Hz

Output Load
1.0μF @ 0.1Hz @ 64kV RMS (Approx 3300m of cable)*
1,2μF @ 0.1Hz @ 57kV RMS (Approx 3600m of cable)*
10μF @ 0.01 Hz @ 64kV RMS (Approx 33000m of cable)*
10μF Maximum Capacitance
* Based on a cable capacitance of 300pF/m

Output Modes
AC (VLF) Symmetrical and load independent across full range
DC (plus or negative polarity)
Burn / Fault Condition or Fault Trip Mode
Jacket / Sheath Testing