Importance

Loading Importance Indicators...

Abstract

A pressurizing wedge assembly for a power transformer includes two mated wedges, each inscribed with locking transverse teeth and, in some embodiments, one of a pair of mating central alignment guides perpendicular to the teeth. The coil-side wedge has a cleat at the bottom to prevent it from slipping as the frame-side wedge is hammered into place. An alternative design uses three wedges, with two generally similar outer wedges and a center wedge with teeth and alignment guides on both sides. The wedges replace a system in which spreading pressure is applied alongside a gap into which a fixed block is inserted. The procedure of using hammers to drive the wedges can be replaced by a procedure in which power tools are employed.

Loading the Abstract Image...

First Claim