Arrangement and method for compensating a fault current in the event of a ground fault

The invention relates to an arrangement for compensating a fault current in a single-pole ground fault (E), in particular in a three-phase electrical network (1) with three conductors (L1, L2, L3), in which a neutral point (3) of a feed transformer (2) or a A neutral point inductor (4) is connected to a ground point (5.1), wherein means are provided for at least partially compensating at least one frequency component of the fault current deviating from a fundamental frequency of a line voltage, and wherein the device comprises at least three switches (7.L1, 7 .L2, 7.L3) and a filter circuit (6) and wherein the conductors (L1, L2, L3) are each connected to a switch (7.L1, 7.L2, 7.L3) and wherein the switches (7 .L1, 7.L2, 7.L3) are connected to the filter circuit (6) and wherein the filter circuit (6) is connected to a ground point (5.1, 5.3), each of the switches (7.L1, 7.L2, 7.L3) manually and / or automatically by means of a ground fault detecting device, which detects the ground fault (E) can be actuated.