PD120-2 partial discharge test

By a partial discharge test with the cable diagnostics systems PD120-2 or PDTD120-2 by b2 electronics, the dielectric condition of a medium-voltage cable can be evaluated.


As an expanded device PDTD120-2 comes with an integrated tan delta diagnostics system!



PD120-2 partial discharge measurement with b2 suite (representative image)


The cable diagnosis system PD120-2 / PDTD120-2 consists of the following units:

  • HVA120 insulation tester (optional)
  • High voltage filter
  • Coupling capacitor (with integrated TD dignostics system)
  • b2 Suite® software for diagnostics and reporting

  • Set of cables and corona rings


The total weight for high voltage filter, coupling capacitor and calibrator is 59 kg. Thus the system is perfectly suitable for mobile use.


For the partial discharge test a sinusoidal 0.1 Hz VLF voltage is employed, adjustable over a range of up to 120 kV peak.

Compact, lightweight and
portable solutions

From small, portable units for one-site use (e.g. off-shore) to built-in solutions for "test van" versions.

b2 Suite® software
b2 Suite® provides a comprehensive “all-in-one” software solution for testing, diagnosis and management with a comprehensive database.

True modularity
The b2 high voltage generators can be easily up-graded to a diagnostics system, keeping initial investment low.

Comprehensive b2 Suite® database enables easy analysis and evaluation of the PD measurement.

Reporting by a mouse click – simple or comprehensive.

Simultaneous measurement

of PD and TD
The parallel testing and measurement of PD and TD saves a significant amount of time, and prevents preconditioning of the cable.

  • Measurement of the intensity of partial discharges versus time
  • Localization of faults by TDR (Time Domain Reflectometry)
  • Display of faults in the partial discharges mapping
  • Phase related depiction
  • Easy to use and language selection

The partial discharge test is documented in the form of a ready-to-use report, containing all relevant results:

  • Calibration Pulse (in accordance with IEC 60270) and end detection
  • Background noise of the measurement arrangement
  • Partial discharges inception voltage (PDIV)
  • Partial discharges level at 1.7 Uo
  • Partial discharges extinction voltage (PDEV)

A SINGLE cable diagnostics system for various applications:

  • Cables: XLPE, PE, PILC
  • Capacitors
  • Switchgear
  • Transformers
  • Rotating machines (IEEE 433)

The PD120-2 and PTDTD120-2 enables any test engineer to efficiently perform meausrements without long training periods.


Other systems of the PD series

Datasheet for download