COIL WINDING, TRANSFORMER USING IT, AND METHOD OF MANUFACTURING COIL WINDING

摘要

A coil for a transformer which is remarkably improved in heat radiating characteristic without increasing the eddy current loss which is generated when the coil is interlinked with leakage fluxes caused by the load current of the winding constituting the coil. A belt-like conductor (1) in which prepreg tapes (2) are interposed is spirally wound and, the conductor (1) is inclined so that the width direction of the cross section of the conductor (1) is approximately parallel with the direction of the leakage fluxes at the end of the coil. Since the leakage fluxes generated between low- and high-voltage coils are almost parallel with the conductor (1), the eddy current loss generated in the winding conductor can be reduced.