ADD™

Partial Discharge Detection Device

for Medium Voltage Surge Arresters

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  • Visual and audible indication
  • Digital monitoring unit
  • Powered by 9V alkaline battery
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  • Carrying case included
  • Low battery indication
  • Lightweight design

Arrestors faults are an important factor in degradation and reduction of the lifetime of a medium voltage component. This translates into raised exploitation costs and questionable reliability, while economic performance and reliability are key criteria in the evaluation of an electricity supplier. It is important that an electric utility have a widespread, quick and efficient tool to check for quality and health of its electrical network.
Arrestors are important for the protection of electric circuits and the degradation of their insulating material affect their performance and reliability. If the insulation of the arrestor is reduced when an overvoltage occurs, it may fail and cause more damages thus creating expenses for the

electric company and their clients. Therefore, easy-to-use, inexpensive and effective measuring equipment significant advantages for regular monitoring of these elements provides.

The ADD™ efficiently filters the influence of corona type activity thus making it an ideal tool to detect insulating material internal partial discharge.

Using the ADD™ on a regular basis will help you to prevent failures, customers complain and costly investigation to identify the source of a problem or potential problems.

The ADD™ operation is quite simple. The probe is placed in direct contact with the energised component under test. The partial discharge level is displayed on the ADD™ and on the remote display.

The remote display gives a wireless reading of the probe’s measurement. The measurement range is 0 to 60dB and the display will show ‘‘OL’’ if the reading is over its maximum.

Data Sheet
User Manual