(1) The silica gel in the moisture absorber of transformer should be the same color changing silica gel. When more silica gel changes color due to moisture, the silica gel needs to be replaced. For single color silica gel, the moisture content of silica g
No need to drain oil. The steel pipe welded on the flange of the moisture absorber is connected to the top inside the conservator. Therefore, the moisture absorber absorbs the moisture in the air above the conservator. Not connected to transformer oil.