These are transformers used in booster transfer networks or in central outputs either unloaded or with a load graduality up to a maximum power of 25000 kVA, 36 kV. They are produced as either dry or oil forced types. The oil forced types are manufactured as either hermetic or with tanks. In dry types containers can be produced up to IP44 according to protection class. Casts can be manufactured in Standard or in condensed form or upon request. In addition with the AF assembly temporary over load up to 50 % can be dragged.