Patent ID: 9183982
Filing Date: 2015-11-10
Classification: H01F,H02H

Abstract:
1. A fault current limiter for limiting a current supplied through a power supply path, comprising: an iron core having three legs of which the upper and lower portions are connected to each other; a primary winding wound around each of the three legs of the iron core and having both ends connected to the power supply path; and a secondary winding wound around each of the three legs of the iron core and having both ends connected to each other through a first switching device; and a tertiary winding comprising a plurality of unit windings, and positioned inside or outside the primary or secondary winding so as to be wound around each of the three legs of the iron core, wherein each of the unit windings has both ends connected to each other through a second switching device, and when an abnormal current flows through the power supply path, the first switching device is turned off, and the second switching device is turned off after the turn-off of the first switching device.