Description
HVI VLF-65E Hipot Tester Repair
The HVI VLF-65E is a 65 kV VLF cable hipot from High Voltage Inc. — a compact, economical 0.1 Hz withstand tester sized for higher medium-voltage cable than the 34E. Its faults concentrate in the VLF output stage, regulation, and metering.
June Company repairs and calibrates the VLF-65E for cable-testing crews and contractors.
Common VLF-65E problems we fix
- Won’t reach 65 kV or output collapses — VLF output-stage failure, often post-flashover, rebuilt.
- Waveform/output instability — regulation degradation, repaired to spec.
- Metering off — voltage/leakage measurement drift, recalibrated.
- Internal HV arcing — insulation breakdown from stress.
- Control or interlock faults.
FAQs
My VLF-65E won’t hold voltage — fixable? Yes. VLF output-stage faults are repairable, then verified so the set delivers full, stable output again, with a NIST-traceable certificate.
Is it certified after repair? Yes — voltage and metering verified against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.






