DG and SG series single-phase and three phase dry type transformer adopts high quality and advanced technology,it has advantages of less waste,low noise,good fire performance and convenient maintenance.It can be applied to  CNC engraving and milling machine,SMT chip shooter,railway network,injection machine, etc.It is mainly used in power supply occasions of Ac 50~60HZ and voltage less than 500V.All the input and  output voltage,connection group and capacity of tapped winding can be designed and produced according to user's requirements.