EDGE COATED CAPACITOR ELECTRODE

摘要

36-CA-3476 EDGE COATED CAPACITOR ELECTRODE An electrical capacitor having a high voltage power factor correction has a casing containing at least one roll section wound with aluminum foil strips separated by a strip of synthetic resin having a dielectric constant below three. The casing contains a dielectric liquid which impregnates the roll section. The aluminum foil strips have a continuous coating of dielectric polymer along both sides of the edges and the coatings has a thickness between 0.06 mil and 0.20 mil. In the prior art, which did not have coated edges, the dielectric liquid film at the edges tended to become thinner. The coated edges tend to reduce corona under high voltage stress and permit sue at higher voltages.