Method of making distribution transformers

专利名称：Method of making distribution transformers发明人：Allan, Dennis Joseph,Grant, John Victor申请号：EP92305164.3申请日：19920605公开号：EP0518565B1公开日：19951108

摘要：A distribution transformer has a wound magnetic core (50) of overall circularshape and rectangular cross-section with between two and four overall rectangularshape electric coils (20,30) extending through the core window. The coils (20,30) are pre-formed and assembled so that their parts (20A,30A) which meet form a circular sectionsolid cylinder. A mandrel (40) is then located around this cylinder (20A,30A) andcontinuous non-amorphous steel strip is wound thereon to form an unannealed, uncutwound magnetic core of axial length in the range 250mm to 1m. In a modification,amorphous steel strip is first wound on to another mandrel, annealed, and thentransferred from the other mandrel on to the mandrel around the coils.

申请人：GEC ALSTHOM LIMITED

代理机构：Hoste, Colin Francis

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