Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1995-08-30
1997-08-05
Wieder, Kenneth A.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324500, 324509, 324260, G01R 3108
Patent
active
056546416
ABSTRACT:
The invention concerns a method for verifying the effectiveness at a given measurement location of a lightning ground system including at least one pick-up member connected to a ground conductor. The method includes the steps of feeding a current to at least one pick-up member by means of an injector device, measuring the magnetic field generated by the ground conductor at the measurement location using a detector device generating a measurement signal the amplitude of which is representative of the magnetic field, and comparing the amplitude of the measurement signal with a reference threshold corresponding to the amplitude of the measurement signal at a reference location a known distance from the ground conductor and in the field of protection of the lightning ground system in order to deduce therefrom, if the amplitude of the measurement signal is greater than the reference threshold, that the measurement location is in the field of protection of the lightning ground system.
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Revue Generale De L'Electricite, Protection dynamique des installations et infrastructures sensibles aux effets electromagnetiques de la foudre, No. 5, May 1991 Paris, France, pp. 41-45.
Zischank, "Simulation von Blitzstromen bei direkten Einschlagen", Elektrotechnishe Zeitschrift, vol. 105 No. 1, Jan. 1985, Berlin, DE, pp. 12-17.
Query Jean-Louis
Seltner Philippe
Brown Glenn W.
Electricite de France (Service National
Wieder Kenneth A.
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