| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a compact iron core of a disassembly-transportation type transformer in which a disassembly work and an assembly work of the core are simple and an assembly period at a site is shortened. SOLUTION: Iron core's outer legs 2 and 4 and iron core's middle leg 3 are disposed in the same flat plane in parallel with each other, and top ends of these iron core's legs are connected with upper yoke iron cores 5, and bottom ends of the iron core's legs 2-4 are connected with lower yoke iron cores 9, which is formed by connecting a lower middle yoke iron core 6 and lower out yoke iron cores 7 and 7 with a divided yoke iron core 8, in this way a three-phase three leg iron core 1 is constituted. The divided yoke iron core 8 of a trapezoid shape whose upper side is longer than the lower side is provided between the parts where the lower yoke iron core 9 is divided, and both end parts of a magnetic steel plate forming the divided yoke iron core 8 and an end part of magnetic steel plates of the lower middle yoke iron core 6 and the lower out yoke iron cores 7 and 7 forming the lower yoke iron core 9 are alternately lapped and laminated in step manner, to form the lower yoke iron core 9.</p> |
