The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 1981
Filed:
Jul. 02, 1979
Lorne D McConnell, Chalfont, PA (US);
Gould Inc., Rolling Meadows, IL (US);
Abstract
Current sensing coils are fixed to the grounded sheath of a gas-insulated conductor in pairs which preferably straddle the internal location of a support insulator. A plurality of such sensors may be disposed along the length of the conductor. The output of the pick-up coils is applied to a conventional electromagnetic target which can be operated from a target-off position to a target-on position in response to the axial flow of ground current through the housing in opposite directions from an insulator position as measured by any pair of pick-up elements. By then comparing the condition of the various targets on the system, one can determine the point at which fault current flowed from the main insulated conductor, across a faulted insulator and to the grounded housing. A local source of reset power may be provided to permit reset of the target, or an external magnetic pulsing device may be employed.