Transformer Presspaper:
It is made from 100% Unbleached sulphate wood-pulp. Cardboard makes which on the intermittent type board machine .Its characteristic is: Material free of strain,very flat , thickness even, the surface smooth, the mechanical strength high, has the obdurability and the electric insulation . Used in oil-cooled power transformers and distribution transformers primarily due to their high purity, mechanical strength and optimal oil-impregnability. The components formed of pressboard, such as angle rings, snout segments and end leads, enable an exact adaptation to the electric field conditions prevailing in the transformer.
