Method and apparatus for detecting fault currents in...

Details Method and apparatus for detecting fault currents in... Method and apparatus for detecting fault currents in...

G - Physics

01

R

324/58.4

G01R 31/08 (2006.01) H02H 3/44 (2006.01)

Patent

CA 1097740

6161 INVENTOR: ANDRÉ ROHR INVENTION: METHOD AND APPARATUS FOR DETECTING FAULT CURRENTS IN ELECTRICAL NETWORKS ABSTRACT OF THE DISCLOSURE A method of, and apparatus for, detecting fault currents, such as short-circuits in electrical loads, especially at direct-current supply networks, wherein there is produced a current signal corresponding to the load cur- rent and compared with a reference value and when a difference signal appearing as a result of such comparison exceeds a threshold value such is employed as a triggering criterion. The rise or slope of the current signal is detected and the reference value is obtained by storing the value of the current signal present upon detection of a predetermined rise.

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