| 摘要 |
PURPOSE:To increase the strength against earthquake without expanding the area for installation by providing high voltage and low voltage lead ducts on the opposing sides of a transformer tank, and horizontally drawing the respective bushings of those ducts in parallel. CONSTITUTION:High voltage and low voltage connecting leads 14 and 15 of the unit transformers 1A and 1B connect the opposing sides of the tank 23 for each transformer at the high approximately equal to the height of the gravity center of the transformer, are drawn to the central part of the height voltage and low voltage lead ducts 26 and 27 which constitute an approximately parallel-cross shaped frame, and are connected to high voltage and low voltage pierced-through bushings 16 and 17, respetively. Said high voltage and low voltage pierced-through bushings are extended in parallel with the longitudinal direction of the unit transformer and in the opposite directions each other. To the other ends thereof which are protruded from a sound proof wall 4, are connected conductors 29 and 32 of high voltage and low voltage insulated bus lines 28 and 31. In this constitution, the strength against the earthquake can be increased without greatly expanding the area for installation. |
