You should be able to source a 380/480 3ph transformer, sized for the load requirements of the machine.
The other is to find out exactly what requires 3ph 380? If only one motor such as a spindle, it may be either cheaper to replace the motor or use a VFD.
I am surprised they do not cater to a export market, they use 380v as this gives 220 between phase and neutral, 1ph.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.