... high reliability 3)CTQC,ISO9001,ISO14001,CE 110kv three-phase three winding no-load-tap-changing power transformer •Main ... all areas inside the winding, lower the temperature rise of the winding and the hot points of the ... and adhered with epoxy resin to make the three –leg two-yoke core a strong and flat ... ,S(F)S10,S(F)S11 Seriesthree-phase three winding no-load-tap-changing power transformer: Verified ...