Fault Detection Device And Method For Detecting An Electrial Fault"

Abstract: A fault detection device adapted for detecting an electrical fault at a medium voltage switchgear (200) having at least one power module (201, 202. 203) is provided. The fault detection device includes at least one input current sensor (301.-302. 303) adapted for measuring at least one input current (501. 502, 503) of the at least one power module (201. 202. 203) of the medium voltage switchgear (200) and at least one output current sensor (400, 401. 402. 403) adapted lor measuring at least one output current (600. 601, 602. 603) of the at least one power module (201. 202. 203) of the medium voltage switchgear (200). A comparator (405) is provided which is adapted for comparing the at least one output current (600. 601. 602, 603) with the at least one input current (501. 502, 503). A control unit (406) is adapted for determining an electrical fault at the at least one power module (201, 102. 203) of the medium voltage switchgear (200) on the basis of the comparison. (Figure 6)

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