The Baur Frida 23kVAC VLF test set is designed for the testing of electrical equipment and medium-voltage cables up to 20 kV nominal voltage. The fully automated and individually programmable diagnostic sequences which include evaluation allow for easy and intuitive operation and cable stress is minimized with stepwise increases in voltage and optimized test durations. The test set features integrated measurement data storage with export available via a USB interface.

Brief Specs:

The HV Diagnostics HVA30 30kVDC VLF Test set instrument is capable of testing 0.5µF (Approximately 1500m of cable) at 0.1Hz and 33kV peak. The frequency of the output can also be reduced allowing even larger capacitance loads to be tested, at 0.02Hz, approximately 7620m of cable can be tested. Test sequences are simple to setup or the operator can select test sequences in either automatic or manual mode. As well as the variable frequency VLF output, dual polarity DC and cable jacket or sheath testing output modes are available. The HVA30 will automatically calculate the optimum frequency to be selected for larger loads.

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. Test results are stored in the instrument’s onboard memory allowing for easy retrieval and download to a PC for review and analysis.

Brief Specs:

• VLF (0.1Hz), DC (±), Cable Fault Conditioning (Burning) and Sheath/Jacket Testing modes.
• Fully automatic or manual cable test sequences.
• True Symmetrical Sinusoidal, load independent, output waveform across full load range.
• Real-time display of actual output waveform.
• Easy to use, ergonomic, menu guided, large backlight user interface.
• Large output load capability (up to 5 µF).
• Automatic and integrated load capacitance measurement with optimum frequency selection.
• No oil or arcing contacts that require routine maintenance.
• Short circuited protected with active arc management regulation, avoids nuisance tripping when dielectric failure occurs.
• Status display of all important safety functions and messages.

The load independent, symmetrical output waveform of the HVA60 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 to test instruments with large non-symmetrical output waveforms. The HVA60 is capable of testing 1µF (approximately 3000m of cable) at 0.1Hz and 60kV peak. The frequency of the output can also be reduced allowing even larger capacitance loads to be tested. At 0.02Hz, approximately 15,000m of cable can be tested.

Applied test voltage, current, capacitance, resistance and time are displayed and recorded with the output waveform being displayed in real-time. If a breakdown occurs during testing, the actual voltage at which it occurred is also 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. The HVA60 is easily programmable to setup or the user can select test sequences in either automatic or manual mode.

Brief Specs: