... may be slight defects.D, Design requirements2,Main mechanical design requirements2.1 Mechanical main body frame is made of high quality steel, ... .12,Equipment has to be automatic alarm functionWhen the main transformer temperature rise more than design standard, or when ... no noise, operation simple, reliable performance, etc.E,Equipment main specifications1,Power supply 3 phase, 50Hz, 380V±10%, 60KW ...