Protection means for objects included in electrical power...

H - Electricity – 02 – H

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348/13, 317/14

H02H 3/26 (2006.01) H02H 7/26 (2006.01)

Patent

CA 1054701

ABSTRACT OF THE DISCLOSURE: In an arrangement for level and sequence detection in a directional wave detector, which has a three-phase directional wave detector with two inputs per phase and three single phase and one three-phase tripping output and one three-phase blocking output, with a level detector with one partial detector for each of the single-phase tripping outputs and the three-phase blocking output, the level detector is provided with a further partial detector which is connected to the three-phase tripping output of the wave detector and the two partial detectors which are connected to the three-phase outputs of the wave detector have a lower reference level than the other partial detectors which are connected to the single-phase tripping outputs of the wave detector.

239827

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