Tangens Delta diagnostics system

Tan Delta measurement is a proven, simple and reliable test method for evaluating the dielectric condition and a degree of degradation of the HV cables. Damages on cables caused by water trees can be easily and clearly identified.
VLF test sets of the HVA series with corresponding voltage range serve as the ideal high voltage source for the TD30 device.

Performance: Accurate TD measurement for variable frequencies in the range of VLF (i.e. 0.01 to 0.1 Hz).

Application: Suitable for testing XLPE, PE, EPR and PILC cables or other electrical equipment.

Safe connection: There is no need to connect the device with the PC, a safe Bluetooth connection is available. 

Clear set up: Easy handling, easy wiring, all steps clearly covered in just few steps.

Compliance: TD30 device is in compliance with the guide IEEE 400.2 and the standard HD 620 with its local derivations.

Output voltage (sine wave) max. 34 kVpeak, 24 kVrms
Tan Delta (resolution / accuracy)

1 x 10-5 / ┬▒ 1 x 10-4


LIGHTWEIGHT and compact

With its weight only 3 kg, TD30 has been designed for maximum portability and on-site use. This makes it utilizable for versatile applications, e.g. off-shore.


All our high voltage cable test sets can be easily extended to any HVA test set, with corresponding voltage range, to a complete diagnostics system. This keeps the initial investment low.

Automatic mode

With the corresponding b2 Suite software, you get manual and incremental test modes with self-explanatory menus, as well as a fully automatic measurement mode reducing operation efforts.

Monitored withstand test

In combination with the b2 Suite v2 software, this TD device provides an additional comprehensive assessment (acc. IEEE 400.2) of your cable system, live.

your benefits

  • easy handling
  • testing and diagnostics simultaneously; at variable frequencies
  • when carried out at fixed intervals, TD testing can be the basis
    of a predictive maintenance program for your HV cables

  • transfer of test results via Bluetooth
  • graphical display with clear interpretation of the values, offering 
    a fast and accurate assessment of the dielectric condition of the cable

  • no complicated wiring
  • also testing of very short cables > 500 pF
  • fully automatic reporting via tailor-made software tool

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