Is the “12-pulse” induction melting furnace the best choice?

Is the “12-pulse” induction melting furnace the best choice? Has the following advantages:

1. Fast power saving, almost the same as the series circuit induction melting furnace;

2. No harmonic generation;

3. It is more mature and stable than other circuits, and has a low failure rate;

4. There are relatively more maintenance personnel; anyone can do maintenance.

5. The components are cheap;

6. The price of a complete set of equipment is relatively cheap;

There is one disadvantage: there are special requirements for the transformer, requiring the power transformer to have 6-phase 7-wire output;