| 摘要 |
PURPOSE:To minimize the earth space by a method wherein, when arranging three or more of single phase transformers into a three-phase transformer, the high pressure side terminal of each single phase transformer is led outform a transformer side surface, then the medium pressure side terminal is led out from the transformer upper surface, next three-phase gas insulation buses are superposed in three stages in a vertical direction to the ground, and the order of bus phases are changed. CONSTITUTION:The content 1 of the unit transformer is contained into a tank 2 and transported by the unit of (a)-(f), and (a) and (b), (c) and (d), and (e) and (f) are connected each other resulting in each constitution of the single phase transformer of U, V, and W phases. Next, from the side surface of the unit transformers (a), (c), and (e), high pressure terminals are led out via a duct 3 and a wall-through bushing 5, and thus the gas insulation bus is constituted of the duct 7 for gas and a conductor 9. From the upper surface of the unit transformer, medium pressure terminals are led out via a duct 4 and a wall-through bushing 6, and thus the gas insulation bus is constituted of the duct 8 for gas and a conductor 10. Thereat, medium pressure side buses are superposed on the high pressure side bus in three stages, and further the order of buses is changed resulting in the arrangement. |
