| 摘要 |
An electrical induction device for high voltage applications, of the type comprising a magnetic core which has at least one leg ( 1 ) and is operatively coupled to a supporting structure, at least one inner winding ( 10 ) which is arranged around said leg ( 1 ) and has a first rated voltage, at least one outer winding ( 20 ) which is arranged around said at least one inner winding ( 10 ) and has a second rated voltage; and electrically insulating means, characterized in that said at least one inner winding ( 10 ) comprises a plurality of substantially concentric turns ( 11 ) formed by a sheet of electrically conducting material which is spirally wound, and in that said electrically insulating means comprise at least one layer ( 12 ) of electrically insulating material which is arranged between mutually facing surfaces of said concentric turns ( 11 ), and first shaped insulating means ( 4, 5 ) which edge, at least partially, at least one of the upper and lower external rims ( 13,14 ) of said inner winding ( 10 ).
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