| 摘要 |
PURPOSE:To increase earthquake-proof strength while simplifying structure by upward projecting an upper surface section opposed to the duct of an acoustic tank and arranging the projecting section up to both ends of the upper surface of the acoustic tank along the longitudinal direction. CONSTITUTION:Two unit transformers 1A, 1B and one on-load voltage regulator 2 are disposed in parallel into the acoustic tank 4 surrounding the whole transformers and voltage regulator while the unit transformers 1A, 1B and the on- load voltage regulator 2 are mutually connected by the duct 3 arranged to the upper section of the transformers. The projecting section 12, which has width slightly wider than that of the duct 3 and is upward swelled convexly, is shaped to the section opposed to the upper surface of the duct 3 in the upper surface section of the acoustic tank 4, and the projecting section 12 is extended up to both end sections of the upper surface of the acoustic tank 4 along the longitudinal direction and formed. |
