Arc detector and associated method for detecting undesired arcs

摘要

It is presented an arc detector for detecting undesired arcs. The arc detector comprises an antenna for receiving an electromagnetic signal representing an arc and a discriminator for analysing a signal from the antenna. The discriminator comprises a spectrum analyser arranged to detect whether the signal represents a normal arc or an undesired arc, by means of analysing the spectrum of said signal. A corresponding method is also presented.