Round or flat electrolytic copper or aluminum conductors with resin or paper insulations are used in the istribution transformers windings as conduction material.
Homogeneous distribution of voltage impulses is obtained by means of applying special winding process to the windings exposed to high temperatures and voltages, and increasing the layer thickness of the insulation at the coil inlet and outlet. Thus abnormal stresses on the windings are prevented.
According to the design speci