Hi there,
I have been back to high power design.
My system contains 3phase, 380V, 50Hz ac input, secondary surge protector, Aux Tr ( single phase, 380V/220V, 300VA), phase transformer( 3ph, 380v/12v,0v,12v,100VA) and a main transformer ( 3ph, 380V/9V,18V,800VA),
SCR(1600V, 50A) bridge, DC...