Oil-immersed transformers are made with two different methods as stored hermetic type according to the current technology and production techniques.It is ordered in one or three phases.It is produced ONANI (oil-natural-air-natural), ONAF (oil-natural-air manda-tory-fan) OFAF(ois-forced-air fan) cooling systems.It is produced with neutral stage charger or stage charger at load.The cable is produced boxed or unboxed.It is produced with porcelain insulator or plug-in.Accessories can be changed according to the customer’s request and the standards of the counrtries.