TRANSFORMER Russian patent published in 2003 - IPC

FIELD: electrical engineering, transformers positioned in underbody space with limited height of opening. SUBSTANCE: oil conservator of transformer is located at one level with main tank which makes it feasible to diminish height of transformer and to place it in underbody space. Transformer with liquid dielectric includes main tank, oil conservator, circulation cooling system comprising cooler, pump with electric motor, pipe-line and additional pipe- line with shut-off gear. In proposed transformer additional flow of liquid from oil conservator through additional pipe- line with open shut-off gear into main tank originates when pump operates and shut-off gear is open. Excessive pressure determined by characteristics of pump and cooling system is formed in main tank. EFFECT: elimination of air cavity under cover of main tank. 1 cl, 1 dwg