Electric arc furnace is an electric furnace that uses the high temperature produced by electrode arc to melt ores and metals. The energy is very concentrated when the gas discharge forms the arc, and the temperature of the arc area is above 3000 ℃.

Due to the different materials and manufacturing processes of power electronic devices, their performance indexes are also different. Thyristor is suitable for the occasions with super power and low working frequency. On the one hand, thyristor has high rated parameters, simple control and mature technology; On the other hand, the thyristor has high surge resistance, high current parameters and good overcurrent resistance, which can better meet the operation requirements.