Firstly kernel and pulley assembling are made after that power distribution units are sent to desiccators. Completed active parts of distribution units are dried in special ovens with vacuum for a while. Later, the transformer active part is added into the transformer tank, and filled with special transformer oil under the vacuum. Then, the transformer becomes ready for test.
HV windings; consist of high heat-resistant enameled coil wire, and high dielectric pressboard with its insulation. Windings are made in such way that eliminates radial forces, if short circuit occurs in transformers.
LV windings; usually made with rectangular copper, aluminum, copper foil or aluminum foil. Windings are made in the form of resistance against axial forces in the case of short circuit in transformers.
Core coil and valve assembly are designed to resist short-circuit mechanical forces. In standard transformers, the active parts and the lid are attached with bolts to the tank; there are also some other practices that the active part directly attached to the tank.
Tanks cover and others are cleaned for protecting from weather's corrosive effects. Inner and outer parts of the tank, cover and conservator tank are painted with epoxy based two-component paint. Then outer part of tank is also painted with RAL 7033 for the last time.
Manufactured from 0, 23-0, 27,0,30 mm thick low-loss silica sheet steel. All of the sheet lamination that are cut and stacked by automated systems according with project criteria and then, all are sent to the production belt.