Patent ID: 6226163
Filing Date: 2001-05-01
Classification: H01F,H02H,H02K

Abstract:
A device in an electric power plant for protection of an object connected to an electric power network or another equipment included in the electric power plant from fault-related over-currents, the device comprising a switching device in a line between the object and the network/equipment, wherein the line between the object and the switching device is connected to an over-current reducing arrangement, which is actuatable for over-current reduction with assistance of an over-current conditions detecting arrangement within a time period substantially shorter than the break-time of the switching device, wherein the over-current arrangement comprises an over-current diverter for diverting over-currents to earth or otherwise another unit having a lower potential than the network/equipment, said over-current diverter including switch means coupled between earth or said lower potential and the line between the object and the network/equipment.