Drying Method of Transformer

Induction heating method
This oil immersed distribution transformer is the body on the tank, the outer winding coil through the power frequency current, the use of fuel tank wall eddy current loss of heat to dry. At this time the temperature of the wall should not exceed 115 ~ 120 ℃, body temperature should not exceed 90 ~ 95 ℃. In order to facilitate the winding coil, as much as possible so that the coil turns less or less current, the general election of 150A current, the conductor can be useful 35 ~ 50mm2 wire. The tank wall can be pad asbestos multi-root, wire around the asbestos.
Hot air drying method
This method is the body in the drying room through the hot air drying. Imported hot air temperature should be gradually increased, the maximum temperature should not exceed 95 ℃, in the hot air inlet should be equipped with filters to prevent the entry of Mars and dust. Do not blow the hot air directly to the body, as far as possible from the body below evenly blowing in all directions, so that moisture from the lid vent holes released.