Hitachi ABB Power Grids AC wet-type capacitors are available in sizes up to 1,200 kvar per unit (at 50 Hz), and are characterized by negligible losses and high reliability. They consist of thin dielectric polypropylene film wound together with electrodes of aluminum foils. Fusing technologies available for these capacitors include internally fused (CHDB), externally fused (CHDE) and fuseless (CHDF) executions.
A bio-degradable hydrocarbon compound with excellent electrical properties is used as the impregnation fluid. The container is made of surface-treated high-quality steel - the bushings and terminals are of highest quality and reliability.