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US 10,854,368 B2Granted
Electrical equipment with rupture oil deflector
AssigneeABB Power Grids Switzerland AG
InventorsSamuel Brodeur, Patrice Lamothe, Alexandre Cote, Claude Lambert
Life of this patent
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Abstract
An electrical equipment is provided that prevents uncontrolled explosions that may occur due to arc faults in the tank. During an overpressure condition caused by an arc fault, the top of the tank ruptures along a weakened region. Cooling oil that escapes during a rupture is redirected by a deflector to prevent the oil from spraying outward from the tank.
Claims24
An electrical equipment, comprising:
- a tank with side walls comprising opposing short side walls and opposing long side walls, the tank containing a cooling oil;
- a top cover attached to the tank and enclosing the cooling oil;
- a weakened region between the tank and the top cover, wherein the weakened region ruptures when an overpressure condition occurs in the tank to release pressure;
- and
- a deflector extending along at least a portion of the top cover and disposed outward from the weakened region and having an overhang portion disposed over the weakened region and extending inward toward a center of the tank, the deflector being disposed along one of the opposing long side walls, at least some of the cooling oil escaping under pressure when the weakened region ruptures, the cooling oil escaping contacting an inner surface of the deflector and being redirected to limit outward spraying of the cooling oil escaping.
2 more elements
Dependencies are inferred from the claim text.