ARRANGEMENT FOR MEASURING THE CRATER VOLTAGES IN A THREE-PHASE ELECTRIC FURNACE WITH THE ELECTRODES ARRANGED IN A DELTA

摘要

A plurality of measuring conductors leading from the bottom of a multi-phase electric furnace and symmetrically disposed with respect to one another and with respect to said furnace, and each connected to an associated impedance, each of said impedances having a common junction. In this fashion, cancellation of induced voltages in the measuring conductors is effected, thereby enabling generation of a potential at the common junction of the aforementioned impedances accurately representative of the potential at the bottom of the furnace