IET Institut für EnergietechnikWissenschaftlicher Mitarbeiter, Dozent
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Spark gaps serve as protection against overvoltages, and consist of two electrodes in a V-shaped arrangement. In the event of overvoltage, for example due to a lightning strike, an arc is generated at the shortest section. This is driven away from the narrow point by the induced magnetic field. The lengthening of the arc path and the thermal heat radiation cause it to extinguish.