Power supply equipment for electric smelting furnace of large capacity

Claim 1

A power supply equipment for an electric smelting furnace of large capacity comprising a plurality of power supply conductors, each of which consists of a. a U-shaped electroconductive copper pipe, the ends of which are secured to an input terminal block fixed to the furnace, b. a terminal copper plate secured to the pipe described in (a) at the bight portion thereof, c. a laminated bridge of substantially non-elastic thin copper plates, which is bent upwardly, secured to the terminal copper plate described in (b) at its one end, d. another terminal copper plate to which the other end of the laminated bridge described in (c) is fixed, and e. a pair of electroconductive copper pipes which are secured to the terminal copper plate described in (d) on each one end, and are connected to a hollow segment of electrode hOlder, whereby said power supply conductors are arranged around each electrode in a manner that none of said conductors is located on the side of the electrode which faces the furnace center; and said conductors are connected respectively to corresponding segments of the electrode holder and input terminal blocks in a manner that every conductor has substantially equal impedance so as to pass a substantially equal electric current therethrough.