Abb Technology Ag

Abb Schweiz Ag

Jon Christopher Brasher

Robert Alan Elick

David Matthew Geibel

William James Teising

Bobby Owen Thurmond, Jr

Jr Bobby Owen Thurmond

An on-load tap changer is provided and includes a plurality of modules disposed in an interior space of a tank and arranged in a side-by-side manner. Each module has a bypass switch assembly and a vacuum interrupter assembly mounted to a first side of a board. The bypass switch assembly is actuated by rotation of a bypass cam and the vacuum interrupter assembly is actuated by rotation of an interrupter cam. A transmission system rotates the bypass cam and the interrupter cam. The transmission system is mounted on a second side of the board.

Tap changer

An on-load tap changer is provided having a vacuum interrupter that is actuated by a shaft of an actuation assembly. A damper dampens the movement of the shaft. The damper provides more dampening when the shaft is closing the vacuum interrupter than when the shaft is opening the vacuum interrupter. The damper includes a housing at least partially defining an interior chamber into which the shaft extends. A piston with openings extending therethrough is disposed in the interior chamber and is secured to the shaft so as to be movable therewith. A blocking structure is operable to block the openings in the piston when the shaft is closing the vacuum interrupter and to un-block the openings in the piston when the shaft is opening the vacuum interrupter.

Tap changer having a vacuum interrupter assembly with an improved damper

A selector switch assembly for a load tap changer includes a bevel gear coupled with a motor drive shaft. A shaft assembly is coupled with the bevel gear and a switch is provided for each phase. Each switch includes a helical gear fixed to the shaft assembly, a Geneva pinion gear engaged with the helical gear, a first Geneva gear wheel mounted on a first shaft moved by a first follower of the pinion gear, a first contact arm associated with the first Geneva gear wheel to rotate therewith, a second Geneva gear wheel mounted on a second shaft and moved by a second follower of the pinion gear, and a second contact arm associated with the second Geneva gear wheel so as to rotate therewith. The contact arms include contacts that engage fixed contacts that define tap positions of the load tap changer.

Selector switch assembly for load tap changer

A tank for a load tap changer includes opposing front and rear walls, opposing side walls, and a bottom wall joined to define a box-like structure. A door structure is removably coupled to one of the walls. An oil catch tray is coupled to the tank and is movable between a retracted, storage position generally adjacent to the bottom of the tank, and an operative position extending outwardly from the one wall to which the door structure is coupled and generally under a portion of the door structure. In the operative position, the oil catch tray is constructed and arranged to collect oil that drips from the door structure and the one wall when the door structure is removed from the one wall.

Growing community of inventors

Humboldt, TN, United States of America

Jon Christopher Brasher