Electric arc furnace transformers serve as the power supply equipment for electric arc furnaces. Their working principle is as follows:

1. High-Voltage Side: The high-voltage side of the transformer connects to transmission lines, carrying high-voltage electricity. Electrical energy enters the arc furnace through the high-voltage winding.

2. Transformer: The transformer consists of two parts: the primary winding and the transformer. The primary winding connects to the high-voltage power source, while the transformer is used to step down the voltage for supplying the arc furnace.

3. Transformer: The transformer is a crucial component. It utilizes inductive principles to convert high voltage into low voltage, meeting the operational requirements of the electric arc furnace.

4. Low-Voltage Side: The low-voltage side of the transformer outputs a relatively lower voltage suitable for maintaining and controlling the arc within the furnace. The low-voltage winding connects to the furnace electrodes, supplying the necessary electrical energy.

5. Electric Arc Furnace: An electric arc furnace is equipment used to heat and melt metals. When connected to the transformer, low-voltage current flows through the electrodes to form an arc discharge, heating and melting metal materials at high temperatures.

In summary, the working principle of an electric arc furnace transformer involves converting high-voltage power from transmission lines into low-voltage electricity via the transformer. This power is then supplied to the electric arc furnace to achieve the heating and melting of metal materials.