*Drying the transformer (refers to the cyclic drying of the transformer).
* Degas, dehydrate and remove impurities from transformer oil.
*At the same time, vacuum the transformer to realize vacuum oil filling.
*The vacuum filling of transformer oil can be realized when the transformer is under vacuum).
* Oil treatment can be carried out when the transformer or oil storage tank is lower than the vacuum oil filter (the height difference is less than 10 meters).
* The vacuum system vacuumizes the volume independently.