Abstract :
Condenser bushings use paper to provide high dielectric and physical strength. The value of paper as an insulation is recognized by its accepted use as the insulating medium in cables, transformers, and other apparatus. It is also recognized that unlimited life is attained when proper protection is provided against external influences. Such protection is obtained by improved methods of winding the capacitors, treatment with oil impregnation, and surface varnish. Further protection is provided for outdoor bushings by sealing the condenser in a weather casing of porcelain with improved flexible caps and gaskets. Insulating oil or a plastic heavier than water is available for encasing the capacitor.
