| 摘要 |
PURPOSE:To enable the compact rational design of tank itself of an oil-immersed induction apparatus by a method wherein at the connecting part of a high-tension bushing and a high-tension lead wire of a transformer, etc., the outside diameter of bushing shielding is made to decrease consecutively against the side of shielding pipe. CONSTITUTION:The transformer consisting of a core 12 and a winding 14 is put in an oil of a tightly closed tank 10, a high-tension bushing 16 is furnished at the top part of the tank, and a tail part 18 of the bushing 16 faces to the inside of the tank. A high-tension lead wire 20 is inserted through a penetrating hole being provided along the center axial line of the bushing 16, and is introduced in the transformer through a shielding pipe 24 to be connected to a winding 14. At the circumferential neighborhood of the tail part 18 and the opening end part of the pipe 24, a cylindrical bushing shielding 28 is arranged coaxially being the end edge part made to curve at 180 deg. turning to the inside of the cylinder, and having the roundness at each circumferential part. By this way, a compact rational design of the tank itself can be performed. |
