| 摘要 |
PURPOSE:To minimize the installing space of a group of the three-phase transformers by a method wherein respective gas insulated bus-bars on the high voltage side corresponding to the respective three-phase transformers are arranged in the vertical direction to the earth stacking in two stages or more. CONSTITUTION:Out of the first and the second three-phase bus-bars, the first three- phase bus-bars 3A-3C are arranged on the upper side of the two stages, and high voltage leads led out nearly from the central parts in the longitudinal direction of the unit transformers constituting the transformers of the respective phases of the first bank 1 are connected to the first three-phase bus-bars interposing bushing pockets 5 arranged nearly in parallel and moreover horizontally on the sides of the unit transformers. Moreover the second three-phase bus-bars 4A-4C are arranged on the lower side of the two stages, and after high voltage leads led out nearly from the central parts in the longitudinal direction of the unit transformers constituting the transformers of the respective phases of the second bank 2 are lowered to the earth level from the sides of the unit transformers once, the lowered leads are connected to the second three-phase bus-bars 4A-4C thereof interposing bushing pockets 5 arranged nearly in parallel and horizontally on the sides of the unit transformers between them, and the bus-bars are arranged to be constituted in the two stages in the vertical direction. |
