STATIONARY INDUCTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To reduce the size of a stationary induction apparatus by improving the coolability of the apparatus without making the constitution of the apparatus complicated. SOLUTION: A transformer is constituted by housing a main body 11 and an SF6 gas which is used for cooling and insulating the main body 11 in a tank 13. The main body 11 is composed of an iron core 16 and a winding 17 which is concentrically wound around the core 16 and composed of a conductor. The heat collecting section 22a of a preheat pipe 22 is inserted between the high-voltage layer and low-voltage layer of the winding 17. On the other hand, the heat radiating section 22b of the pipe 22 is closely adhered to the internal surface of the tank 13. Therefore, the heat generated from the winding 17 is transferred to the tank 13 through the pipe 22 and radiated to the outside from the tank 13.