INVERTER-FED ARC FURNACE WITH CAPACITOR ASSEMBLY IN SECONDARY CIRCUIT

摘要

An electric arrangement for an AC electric arc furnace (1) has an inverter (2) having a mains voltage (U) of a supply network (3) having a mains frequency (f) in a primary voltage (U ') having a furnace frequency (f'). implements. A furnace transformer (4) of the electric assembly transforms the primary voltage (U ') into a secondary voltage (U "). The secondary voltage (U") is supplied to a number of electrodes (6) of the arc furnace (1). The electrodes (6) are arranged in a furnace vessel (8) of the arc furnace (1). They charge an imOven vessel (8) located melt (9) with arcs (10). The secondary voltage (U ") is furthermore fed to a capacitor arrangement (7) arranged on the output side of the furnace transformer (4), to which the furnace transformer (4) is connected on the output side.