METHOD, SENSOR, AND SYSTEM FOR MEASURING HEAVY CURRENT IN BUS ASSEMBLY OF FURNACE-TRANSFORMER SHORT NETWORK Russian patent published in 2007 - IPC H05B7/144 G01R15/18 

FIELD: electric measurement technology; electric-arc furnaces including ore heating and steel smelting furnaces and heating ovens.

SUBSTANCE: proposed method for measuring heavy AC current in bus assembly of furnace-transformer short network includes disposition of at least one magneto-sensing component incorporated in current sensor design interacting with magnetic field set up by current carried by buses and connection of current sensor leads to measuring device; heavy current being measured is passed through opposing buses or bus sections in opposite directions. Sensor has at least one magneto-sensing component placed in space between specularly disposed surfaces of buses and provided with one or more turns of electricity conducting material placed in space so that turn planes are approximately perpendicular to specularly disposed bus planes and approximately parallel to current flow direction in bus. Sensor can be wound on nonmagnetic or ferromagnetic linear core. Desired quantity of magneto-sensing components in system is found from equation where K is total number of magneto-sensing components incorporated in sensor; q_i is quantity of magneto-sensing components installed in i^th space; n is quantity of bus pairs in bus assembly; ; magneto-sensing components are interconnected in series or in parallel; measuring device has unit for matching signal picked off sensor with characteristic of measuring device input circuits.

EFFECT: facilitated heavy-current measurement procedure, improved design of sensor and measuring system.

24 cl, 12 dwg, 1 tbl