POWER SUPPLY DEVICE FOR TUNNEL CONSTRUCTION

摘要

A power supply device for tunnel construction, according to one embodiment of the present invention, comprises: a housing; a high voltage bushing provided on the outer surface of the housing and receiving high voltage power; a primary transformer provided inside the housing, and connected to the high voltage bushing so as to receive the high voltage power and lower the same to medium voltage power; and a secondary transformer provided inside the housing, and connected to the primary transformer so as to receive the medium voltage power and lower the medium voltage power to low voltage power, wherein the primary transformer supplies the medium voltage power to a boring machine used during tunnel construction, and the secondary transformer supplies the low voltage power to an illuminator used during the tunnel construction.