Is it possible to connect the transformer winding for a 220V network to a 380V network?

Question

Do it yourself

I know that I came to the wrong resource, but I will ask this question - there is a transformer with 220V and 6.3V windings, both networks are single-phase. The goal is to increase the voltage of the secondary winding by connecting the primary to 380V.
Will the winding or other parts of the transformer "quack"?

Answer 1

Please note.
1) breakdown voltage between turns.
2) an increase in the generated heat with an increase in voltage and, as a result, current;
3) a drop in efficiency when the transformer is not operating in design modes.
IMHO it is highly likely that everything will work. But it is also not a small chance that white smoke will come out.

Answer 2

Will make "quack". Or it will overheat and sooner or later it will. It is better to rewind the secondary winding.

Answer 3

"quack" will be when the active power is exceeded. And so, just the output will rise to 11V. (this is a theoretical answer)

Answer 4

Set it on fire, if these are "standard" three-phase 380 V, then between any two phases there will be "regular" 220 V. We connect and everything works as it should, doesn't it?