Super energy-saving, three-phase amorphous distribution transformer core, Low core loss, low noise, Range: 30KVA ~ 2500KVA. ... to work under frequency even 50 KHz. Catech’s amorphous distribution transformer core adopts American G.E. manufacturing techniques.Amorphous Material ... (); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Amorphous Core for Three-phase Distribution Transformer