SESTFta is an oil-free transformer bushing with a solid active part made of resin-impregnated synthetic and a condenser control. The air-side housing is a silicone composite insulator. This bushing with dry filling is designed for rated voltages of 25 to 550 kV and rated currents up to 6000 A.
SESTFta is based on IEEE C57.19.01 and is tested according to IEEE C57.19.00.