Partial discharge detection using ferrite antenna

Some examples of partial discharge detection by using a loop antenna wound on a ferrite core were demonstrated. The prototype of a partial discharge detector system using a ferrite antenna was demonstrated. It was found that the partial discharge can be detected by measuring the electromagnetic waves irradiated from the discharge event, using the loop antenna and a wideband amplifier. The frequency range of the detected electromagnetic waves was up to 50 MHz. The maximum sensitivity of the prototype detector was found to be about 500 pC in practical use.<
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