Electric furnace for arc melting

TLDR: An electric furnace for arc melting having electrodes connected to a main source of electrical power is provided in this article. But the transformer is a three phase transformer and there are a plurality of power factor correctional devices connected to the high voltage winding of each phase of the transformer.

Abstract: An electric furnace for arc melting having electrodes connected to a main source of electrical power. A transformer having high voltage windings and low voltage windings is provided. There is means for independently connecting the electrodes to the low voltage windings of said transformer, and means for connecting the high voltage windings of the transformer to power factor correctional devices. The transformer is a three phase transformer and there are a plurality of power factor correctional devices connected to the high voltage winding of each phase of the transformer. The power factor correctional devices are preferably capacitors. Circuit breakers are provided for connecting the capacitors to the high voltage windings and disconnecting them therefrom and for changing the amount of capacitance connected to the high voltage windings.