Description
Baur Viola TD VLF Tester Repair
The Baur Viola TD is a compact VLF cable test and diagnostic set with integrated tan-delta — a portable unit that withstand-tests medium-voltage cable at 0.1 Hz and measures dielectric loss to assess insulation condition in one lightweight package. Its faults split between the compact HV source and the precision tan-delta measurement.
June Company repairs and calibrates the Baur Viola TD for field crews running portable VLF testing and diagnostics.
Common Viola TD problems we fix
- Tan-delta measurement drift — loss-measurement drift affecting condition assessment, recalibrated against standards.
- Won’t reach test voltage or output collapses — HV source failure, often post-flashover, repaired for full VLF output.
- Waveform distortion — regulation faults on the 0.1 Hz output, corrected.
- Won’t hold a charge — battery degradation on the portable unit, replaced.
- Display or control faults.
FAQs
My Viola TD readings drifted — repairable? Yes. We recalibrate the tan-delta measurement and verify the HV output so both withstand and diagnostic results are accurate again, with a NIST-traceable certificate.
Can you service the battery too? Yes — battery and charging service is routine on these portables.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.






