PROBLEM TO BE SOLVED: To solve such a problem that front maintenance and down-sizing are difficult when a rear fan is provided in order to cool the back side of an air-cooled transformer.;SOLUTION: An air-cooled transformer 1 is provided with front intake fans 4a-4c on the front side of a panel body 3 housing transformers 2a-2c, provided with a bottom face intake fan 5 and a back-face duct 6 on the bottom face side, and provided with an exhaust fan 7 in the ceiling. Outdoor air taken into the panel body by means of the front intake fans and the bottom face intake fan cools the transformers before being discharged to the outside of the board panel by means of the exhaust fan. The front intake fans and the bottom face intake fan are attached onto the pedestal of the transformer removably. The bottom face intake fan is disposed to the back side of the front intake fans, and can be taken out to the front side of the panel body by utilizing a space after removing the front intake fans.;COPYRIGHT: (C)2013,JPO&INPIT
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