The present invention relates to a system for generating a direct current power output from an alternating current (103) in a primary wire (3), wherein the system comprises: at least one core (104) configured to be located around the primary wire (3); at least one secondary winding (22, 24) arranged around the at least one core (104), wherein each winding (22, 24), together with the at least one core (104) and the primary wire (3), forms a current transformer unit, and wherein each secondary winding (22, 24) has a first end and a second end; for each secondary winding (22, 24), a rectifier (10), wherein each rectifier (10) is configured to convert an alternating current to a direct current, and wherein each rectifier (10) comprises two AC connections for alternating current and two DC connections for direct current, wherein the first end and the second end of the secondary winding (22, 24) are connected to the AC connections of the rectifier (10); for each secondary winding (22, 24), a shunting unit arranged and configured to short the ends of the secondary winding (22, 24); and a load element (6), wherein the load element (6) is connected to a DC connection of each rectifier (10). The present invention also relates to a corresponding use.