Cable Testing & Diagnostics

Cable testing and diagnostics are various techniques used to help assess the overall insulation quality of medium voltage cable systems, such as withstand testing, tan delta testing, and partial discharge testing. Important information is provided that can be used to improve system reliability, reduce repair costs by conducting condition-based maintenance on most vulnerable cables, and prevent unnecessary and costly outages.

BAUR’s truesinus® is a voltage generation technology invented in 1990 and patented in 1995 for the very low frequency (VLF) high voltage cable test equipment. This unique system with its truly sinusoidal voltage shape (no distortion) allows non-destructive VLF testing and condition evaluation of high voltage cables in compliance with VDE, IEC, and IEEE 400 standards. The truesinus® technology provides a precise basis for significant and reproducible cable tests or condition evaluation with tan delta or partial discharge measurements. Furthermore, simultaneous measurements, such as monitored withstand tests (MWT) or Full MWT can be conducted.


Frida TD

Lightweight, portable, and easy to use VLF test sets 

  • Two versions available
    • Frida – Automatic, programmable VLF hipot up to 26.1 kVrms (34 kVpeak)
    • Frida TD – Perform VLF cable testing with tan delta diagnostics without the need for additional external hardware
  • Output Modes +DC, -DC, VLF sinewave (0.1 – 0.01 Hz), VLF square wave
  • Extendable to include partial discharge (PD) measurement and parallel PD/TD measurements with PD-TaD 62
  • Cable sheath testing and sheath fault location


BAUR’s Two-part design VLF High Voltage Testing device

  • Two versions available
    • Viola – Automatic, programmable VLF hipot up to 44 kVrms (60 kVpeak)
    • Viola TD – Perform VLF cable testing with tan delta diagnostics without the need for additional external hardware
  • Output Modes +DC, -DC, VLF sinewave (0.1 – 0.01 Hz), VLF square wave
  • Extendable to include partial discharge (PD) measurement and parallel PD/TD measurements with PD-TaD 62
  • Cable sheath testing and sheath fault location


PHG 80

BAUR’s most powerful VLF generator

  • PHG 80 Portable up to 57 kVrms (80 kVpeak)
  • Output Modes +DC, -DC, VLF sinewave (0.1 – 0.01 Hz), VLF square wave
  • Extendable to include tan delta (PHG 80 TD) or partial discharge measurement with PD-TaD 80
  • Optimized for VLF cable diagnostics test van systems
  • Ideal for cable diagnosis on plastic, PE / XLPE or EPR and paper insulated mass impregnated cables
  • Van-mounted, stand-alone, or portable versions available

Most modern non-destructive partial discharge (PD) diagnostics with identification and precise location of partial discharges in cable systems

  • The lightest and most compact PD measuring device on the market
  • Very easy operation via BAUR’s diagnostics software (System Software 4)
  • PD diagnostics in combination with BAUR’s VLF cable test sets Frida or Viola and the possibility of conducting parallel PD and dissipation factor diagnostics with BAUR’s Frida TD or Viola TD
  • PD location pin-pointing with Partial Discharge Inductor Tracy
Liona Online PD Spot Tester

Automatic PD detection during normal mains operation (without switching off the cable route)

  • HFCT and TEV sensors available for PD detection
  • Identify and locate potential problems before faults occur
  • Compact and lightweight device that is easy to transport
PGK 80

DC Dielectric withstand testing has never been easier with these single section one part high voltage hipot testers.

The PGK series hipot test equipment is specially designed to be lightweight, compact, user friendly, and robust.

DC Hipots available up to 80 kV.

The BAUR PGK HB Series combination testers are extremely long-lasting, robust, and cost-effective high voltage testing devices.

Continuous adjustable test voltages with 50/60 Hz mains frequency up to 190 kVrms or DC voltages with positive or negative polarity up to 260 kV can be generated.

The current and voltage display, the safety control unit, and the regulating transformer are integrated in the operating unit, and allows for the operation of the HV unit from a safe distance.

BSW4 PD Diagnostics

Asset management support with new functions and easier handling.

  • Cable Testing modes included in one software program
  • Cable hipot testing
  • Tan Delta Measurement
  • Partial Discharge Measurement
  • Cable fault location
  • Joint searching mode
  • Reporting and database asset management

Damped alternating current (DAC) test systems are lightweight, compact, and versatile systems for testing and diagnosis of medium voltage distribution and high voltage transmission class cables. DAC testing is used as an asset management tool to help assess the cable insulation condition of newly installed, repaired, or service-aged cables. The systems allow for voltage withstand tests, partial discharge (PD) measurement, with source localization along the length of cable, as well as the estimation of loss factor (or tan delta).

For onsite cable testing, the HAEFELY variable frequency resonant test system RSKF is a mobile and easy to use solution based on the latest technology in frequency converters for testing up to 500 kV cable class. The RSKF series of on-site cable test systems are based on the latest frequency converters to facilitate testing of long lengths of cable in the field with fixed core, variable frequency reactors. These reactors are lighter and more powerful compared to variable inductance fixed frequency reactors. The system’s low noise level is optimized to allow partial discharge measurements with the DDX 9121b.

Are You Interested in Cable Testing & Diagnostics?

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