VLF Testers

It is well known that DC testing of aged extruded cable such as XLPE and EPR is potentially damaging to the cable insulation, causing premature failure of the cable
under service conditions. In addition, DC “proof” or hipot testing has been found to be ineffective in detecting serious defects in cables. Since this is the main objective of any hipot test, and due to the negative side effects of DC, VLF AC waveform testing is now recommended by almost all cable testing standards.

Acceptance or maintenance hipot/proof testing using VLF high voltage sinusoidal AC allows the operator to efficiently detect serious cable insulation defects, before they result in an in-service failure, without affecting those healthy sections of the cable that still have remaining service life.

VLF (Very Low Frequency) testing allows insulation damage to be detected in the shortest possible testing time and does not detrimentally affect the quality of the insulation material.

Baur Frida- 23kV RMS (30kV DC) VLF Tester

The compact design means that the device can also be carried within the site. Testing in bad weather is not problem as the equipment is completely protected against splash water. A graphics display with a menu for all control functions ensures ease and simplicity of operation. User-defined test sequences (e.g. incremental voltage testing) can be defined in order to set up an automatic test procedure. All test records can be read out and printed from the USB memory stick. View Information.

HV Diagnostics HVA60 - 44kV RMS (60kV DC) VLF Tester

The HVA60 is the most advanced HV test system available, it is also the lightest, most compact instrument of its type on the market. The HVA60 has the highest power to weight ratio of any comparable unit available.

There is no need to carry two pieces of equipment around and then interconnect them!

The HVA60 is capable of testing 1μF (Approx. 3000m / 10,000 ft of cable) at 0.1Hz and 44kV rms. The frequency of the output can also be reduced allowing even larger capacitance loads to be tested. At 0.02Hz, approx. 15,000m / 50,000ft of cable can be tested. View Information.