XDP Partial Discharge Detector
The XDP Partial Discharge Detector is used to detect partial discharges, phenomena associated with the presence of insulation flaws on the underground electrical cables and joints of moderate voltage.
The XDP Partial Discharge Detector allows to check if a designated site to carry out underground workloads under high voltage is safe or not. 
The user sweeps the capacitive sensor on the joints of the cables he wants to inspect and if any are detected, the XDP then informs him of the shape of the partial discharge signals on many cycles along with the peak value.

• Verification of the joints under normal
  charge of the electric network

• Use of the surface sensor which does
  not require direct access to the cable's voltage

• Progressive analysis of the database

• Allows to keep the readings in
  memory, with the date and the hour

• Allows the transfer of collected data
  stored in a computer to ensure the
  follow-up of the measurements

• Allows to communicate the results to
  an expert via a computer connected to the 
  Internet

• Water-proof et rugged for work site
  applications

The XDP allows to check if a designated site to carry out underground workloads under high voltage is safe or not. The user sweeps the capacitive sensor on the joints of the cables he wants to inspect and if any are detected, the XDP then informs him of the shape of the partial discharge signals on many cycles along with the peak value. What's more, the instrument allows, in "analysis" mode, to proceed in a comparative signal inspection with the help of its own database, which encompasses ten reference signatures in order to establish a correspondence with the four nearest signatures to the one obtained on the joint.
It is also possible to record the discharge measurement graphically and in audio form along with the date and the hour of the reading. The user may also listen to his recording on the premises. 
The recorded measurements remain stored in memory even when the XDP is shut off. 
This allows the transfer of these recordings to a computer upon return from the worksite. 
The ten reference signatures can be listened to anytime and can be replaced to enhance the internal database of the instrument.

Technical specifications
Peak measurement value in dB relative to 15 picoCoulomb
Peak detection with a fast numeric circuit (CPLD)
Fast numeric processor (DSP) for the instant analysis of results
Inspection of the wave's shape in high frequency to determine its proximity
Bandwidth reception, without any distortion nor alleviation from the discharge impulses
Automatic interruption of the instrument after 2 min. in idle mode
Automatic interruption of the backlighting after 30 sec.
LCD (Liquid Crystal Display) displays the results in easy to read, big letter casings.
PC(Windows)-interface for the analysis and the follow-up of results and also for the programming of the signatures
Follow-up of the measurements on the Access database