| 摘要 |
PROBLEM TO BE SOLVED: To prevent fragments cut off from a core from escaping outside, even in a transformer of the type fixed to a metal fitting by banding.SOLUTION: A wound core transformer includes the core 10 of one-turn cutting system configured by laminating a plurality of thin band plates made of an amorphous magnetic alloy, a winding 20 attached to a linear leg of the core, and air-permeable unwoven fabric 30 wrapping core bent parts 12, 12' protruding to the outside of the winding. The winding is configured by winding an electric wire on an outer periphery of a bobbin. A band groove 25 axially extending and opened at both ends is formed in a predetermined position between an innermost periphery of the electric wire and an outer peripheral surface of the bobbin. When fixing it to the metal fitting 50 by a band 51, the core can be fixed by passing the band through within the band groove without breaking and opening the unwoven fabric. |
