| 摘要 |
<p>PURPOSE:To simplify voltage regulators and to make carrying in and out of a unit transformer easy by extending a common voltage duct which connects low voltage ducts together to the upper portion of the voltage regulators at the time of three- phase load, and providing the neutral terminals of transformer groups on said extended portion. CONSTITUTION:Transformer groups 501 and 502 are formed by arranging a plurality of unit transformers 101-103 and 104-106 in one line, respectively. Low voltage ducts 109-115, a common low voltage duct 116, and high voltage ducts 112-114 are provided on the upper end of the transformers 101-106. The transformers 101-106 are electrically connected via said ducts 109-116 and 112-114. A space A corresponding to one transformer is provided between the transformer groups 501 and 502. A space A' is also provided between voltage regulators 107 and 108 at the time of three-phase loads, and the common duct 116 is extended to the space A'. Neutral terminals 117a and 117b for the transformer groups 501 and 502 are provided on said extended portion. Therefore, voltage regulators 107 and 108 are simplifyed and the transformers 101-106 can be readily carried in and out.</p> |
