| 摘要 |
PURPOSE:To prevent overheat by leakage flux in a tank wall by disposing a core leg, core yokes magnetically coupling with both ends of the core leg, a wire wound on the core leg and magnetic clamps with collars annularly at both ends of the winding. CONSTITUTION:With a 3-phase 3-leg transformer 11, core yokes 13 are arranged at upper and lower ends of a core leg 12, and other-phase core legs 13 are coupled magnetically. A stiffening plate 15 and clamping fittings 15a, 15b are applied and clamped to the side surfaces of the core leg and the core yokes. An internal winding 16 and an external winding 16a wound in a coaxial manner are fitted to the core leg, magnetic clamps 17 with a collars are disposed at the upper and lower ends of the windings 16 and 16a, and a transformer proper formed in this manner is received in a tank 18 together with an insulating medium. The magnetic clamps 17 are formed annularly by winding ferromagnetic metal sheets. Collars 17b shaped so as to project to the winding sides are formed at the outer circumferential ends of annular main body sections 17a. |
