The series resonant power cabinet is a core power supply control device developed by Topyro for MF furnaces and other heating/smelting equipment. With the technical advantages of “multi-furnace coordinated control and high efficiency & energy saving”, it is widely applicable to intermediate frequency melting furnaces and heating furnaces in the metallurgical and metal processing fields. It provides stable and efficient power support for the synchronous operation of multiple electric furnaces, and is a key equipment for improving the power utilization efficiency of production lines and reducing energy consumption.