| 摘要 |
PURPOSE:To miniaturize the whole of an apparatus and improve its reliability by enforcing insulation of tap leads by use of a composite-insulating structure and introducing the tap leads to the side of a tap changer through in a tank enforcing frame member. CONSTITUTION:Tap leads 9 of each phase are wrapped by an additive insulator 11, for example, such as a press board and then lead into a tank enforcing frame member 4 through an introducing hole 1A formed on an upper wall of a transformer tank 1. Then, the tap leads are extended into a tap changer container 8 along in the tank enforcing frame member 4 to connect them to a tap changer 7. A sealed metal fitting 12 is provided on the periphery of the introducing hole 1A. In other words, in this configuration, firstly an insulating structure of the tap leads 9 is made by a composite one composed of insulating oil 4 and the insulator 11 for enhancing its dielectric strength and gives access to a transformer tank 1, that is, a grounding component, and secondly the composite-insulated tap leads are made so as to run not in the transformer tank 1 but in the tank enforcing frame member 4. |
