How to choose a transformer for a 2T induction melting furnace?

The intermediate frequency power supply of the 2T induction melting furnace is 800kw-1600kw. 800KVA-2000KVA transformers should be selected. The intermediate frequency power supply power is small and the melting time is long, and the intermediate frequency power supply power is short and the melting time is relatively energy-saving, which is equivalent to a large horse-drawn trolley.