Transformer Electrical Insulation [Editorial]

This Special Issue of Transactions on Dielectrics and Electrical Insulation is dedicated to transformer insulation. The transformer is a very essential apparatus in an electric power system and its reliability is of utmost importance as a transformer failure results in a very costly and difficult to predict interruption of energy delivery. In turn, transformer´s performance depends heavily on its insulation system; therefore the insulation is perhaps the most critical transformer part.