| 摘要 |
<p>A distribution transformer has a wound magnetic core (50) of overall circular shape and rectangular cross-section with between two and four overall rectangular shape 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 section solid cylinder. A mandrel (40) is then located around this cylinder (20A, 30A). Amorphous steel strip is first wound on to another mandrel, annealed, and then transferred from the other mandrel on to the mandrel around the coils.</p> |
