Patent ID: 6130540
Filing Date: 2000-10-10
Classification: G01R,H02B

Abstract:
A system for measuring an electric interference in an encapsulated high-voltage switchgear, the switchgear carrying a useful low-frequency alternating current voltage on a conductor, comprising:at least one measurement probe receiving the interference signals and the useful voltage from the switchgear for each phase of at least one phase, the at least one measurement probe including a measurement electrode without an electrical connection to the conductor, both the interference signals and the useful voltage being picked off in at least one phase by a same one of the at least one measurement probe;an analyzing device for determining an occurrence time of the received interference signals as a function of a period of the received useful voltage of a respective phase of the at least one phase in which the received interference signals occur; anda filter arrangement including a first circuit and a second circuit, the received interference signals and the received useful voltage being separately available at the filter arrangement, the filter arrangement concurrently effecting an antenna operation for electromagnetic radiation within a high-frequency range via the first circuit, and a capacitive voltage divider operation within a low-frequency range via the second circuit, the high-frequency range being approximately 300 MHz to 3 GHz.