The secondary winding of the transformer is made up of kraft paper covered flat or foil conductors; electrolytic copper or aluminium material because the rated current and temperature coefficient of secondary winding are high than the primary winding.

      For primary windings, aluminium or copper enamelled wire is used. Between each layer of the winding, high quality insulating paper is used and in complete layer of the primary winding there are sufficient quantity of oil gaps to transfer the heat from winding to the insulating oil.
 

    Vector group of transformers are standardized as Dyn-11 (Delta ?Star) and Yzn-11 (Star-Zigzag) connections. The transformers with different vector group configurations  can be also supplied upon request.

    M5 0,30mm. or M4 0,27mm. Cold Rolled Grain Oriented Steel with high magnetic current carriage capacity, is used in our cores which are manufactured in the form of type E with the step-lap method and iron loss and noise level are kept low by this way in our products.

    Our transformer tanks, on which impermeability and endurance tests are performed in accordance with IEC 60076 product standard, are manufactured in two types: with radiators or with corrugated walls. Our products, on which temperature increase tests are performed, are equipped with radiators/corrugated walls in suitable size and quantity to provide sufficient cooling.