How many control panels are the intermediate frequency power cabinet of the induction melting furnace composed of?

The intermediate frequency power cabinet of the Induktionsschmelzofen is generally a constant power control panel. The intermediate frequency power cabinet of the new series inverter is divided into a rectifier control panel, an inverter control panel, and a protection panel and a pulse control panel. Several control panels of the old induction melting furnace 10 years ago.