Ellenberger & Poensgen Gmbh

Ho Wilson

Peter Meckler

Peter Steffen

Stefan Kohler

The invention relates to a method for detecting accidental arcs (arc tracking) on a cable (), especially on a cable of an aircraft electrical system. According to said method, an alternating current signal (I(t)) that has been detected is sampled time-discretely and a trigonometric function (I(k)) imitating the alternating current characteristic is determined by interpolation of a number of sampling values (y(k)). The current alternating frequency (&#x3c9;) is then derived from this trigonometric function. The result of a comparison of the current alternating current frequency (&#x3c9;) and a set or reference frequency (&#x3c9;') is used to determine the presence of an accidental arc (I,I) and a warning signal (S) is optionally generated. A device which functions according to this method is advantageously integrated into a circuit-breaker () for the aircraft electrical system, so that the latter is equipped to detect and deactivate accidental arcs that occur on the electrical system cable ().

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Seattle, WA, United States of America

Ho Wilson