How to choose a transformer for a 5 ton induction melting furnace?

5 ton induction melting furnace generally adopts 12-pulse rectification, choose 3200KVA rectifier transformer, intermediate frequency power supply is 12-pulse, 3000kw is normal power, 4000kw is fast power.

The 5 ton electric arc furnace transformer is 3200KVA, special variable, generally oil-water cooling, 10KV or 35kv, generally 10KV, long-term overload 20%