The definition of DSH-IIIB intermediate-frequency power DSH-IIIB intermediate-frequency power supply adopts double rectification medium - frequency power supply, which is also 12 pulse intermediate-frequency power supply, the SCR series resonance power supply, featuring series resonance constant power output and high smelting speed: It is constant power output power supply. A small amount of material can be added to reach the rated power output, and remain the same. Inverter frequency always tracks the load changes to achieve resonant protection constant power output, which is immune to charging material. Constant power output can be maintained throughout the smelting process. It shows excellent performance when producing stainless steel, copper, aluminum and other non-magnetic materials. Also, it features fast melting speed, less charge element burns, and accordingly lower cost on casting. Hence, it features fast melting speed, which is good for energy saving. Series intermediate-frequency power supply resolved the 5 and 7 high harmonics and greatly reduces the harmonic interference of power grid.

Excellent control system has been used in DSH-IIIB intermediate-frequency power Energy-saving type of DSH-IIIB intermediate-frequency power supplies power to the two furnaces respectively. The power of the intermediate frequency power supply can be distributed between the two furnaces arbitrarily to make one furnace melt and the other furnace warm. It has equipment enabling security setting, with little harmonic pollution. It is more energy saving than parallel inverter equipment. It improves the environment of the power grid, saves the manufacturing cost for the users and provides a strong guarantee to obtain considerable economic benefits.