To make reliable decisions, time-synchronous PRPD patterns (phase-resolved partial discharge) are obligatory. The UHF PD Detector can be synchronized with the power frequency by means of a number of methods. This ensures that the exact PRPD pattern can be obtained and that synchronous noise can be easily distinguished from partial discharges so that no unwanted false decisions are made.

Another technical highlight of the UHF PD Detector are the two input channels. This allows the user to compare several sensors, or phases, at the same time. Typical examples could be the comparison of HV terminations which have pre-installed UHF Sensors as shown on the image. Furthermore this feature is also very useful for PD localisation via level comparison in GIS switchgear using the internal UHF sensors. Summarized this capability further increases the functionality of the UHF PD Detector and makes it a unique, efficient and reliable measurement system.

Due to the large number of compatible sensors, both MV and HV plants can be tested with the UHF PD Detector. In addition to this, the UHF PD Detector has the unique advantage that both RF and UHF measurement functions are combined in one single measuring instrument. Partial discharges emanating from the most diverse components of MV and HV systems, such as cable terminations, surge arresters, voltage and current transformers, switchgear and insulators, can be therefore be identified. In addition the UHF PD Detector can also be used with UHF sensors from other suppliers like drain valve sensors for transformers or UHF sensors within GIS.