Method of repairing a transformer having a repairable amorphous metal transformer joint
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United States of America Patent
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Mar 21, 1995
Issued Date -
N/A
app pub date -
Dec 12, 1991
filing date -
Sep 28, 1988
priority date (Note) -
Expired
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Abstract
Disclosed is a method of making a repairable transformer having an amorphous metal core. The three uncut legs of an annealed wound amorphous metal core are covered with an adhesive material while leaving the cut leg and both adjoining radii covered, but not bonded. The core joint is opened and coils are placed over the legs that adjoin the cut leg. The core joint is closed and the edges of the joint and both adjoining radii are covered with an inner layer of porous material which is secured by an outer wrap of electrical grade steel. The resulting transformer can be easily repaired by unwrapping away the porous material that covers the cut leg and the adjoining radii, opening the core joint, replacing a defective coil or core, reclosing the core joint, and rewrapping the porous material and reclosing the outer layer of electrical grade steel.
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