Dehydration of transformer oil
This is a process of water removal from transformer oil. Dehydration is performed
on-site while the oil is in power transformer, barrel or any other tank.
Process of dehydration includes the following:
» DEHYDRATION OF TRANSFORMER OIL
Restoration of electrical oil characteristics
Guaranteed oil characteristics after oil dehydration:
» Dielectric strength
» Water content in insulating oil
Operation principle
Transformer oil dehydration is based on use of synthetic adsorbents.
Removal of water as one of the main promoters of the oxidation process significantly
extends the life of the transformer and increases operation reliability on the network.
Power transformer Insulating oil dehydration is achieved by adsorption of water molecules,
i.e. by contact of oil and granulated adsorbent.
Characteristics of transformer oil dehydration process
It is applicable in all weather conditions without oil heating and vacuuming. Energy
consumption is significantly lower in comparison with other technologies.
It can be performed in ON-LOAD mode, i.e. while the power transformer is energized.
Main characteristic of synthetic adsorbents is possibility of their reactivation.
After saturation, adsorbents can be reactivated a virtually unlimited number of times
without losing of their adsorption capacity.
Synthetic adsorbents are absolutely neutral to all kinds of mineral oils. While drying
of insulating oil there is no inhibitor adsorption. Therefore it is possible to implement
this treatment on transformers as often as required, as basic process of maintaining
and extending their lifetime.
Transformer insulation dehydration main characteristics
» No oil heating
» No oil vacuuming
» No transformer vacuuming
» No natural inhibitor removal
» No fault gases removal
» Cost effective
» Ecology friendly (zero gas emission and no disposal of waste oil)
» Transformer washing not required
» No exposing of transformer core to atmosphere
» No loss of production (can be performed while transformer is energized)
» Reactivation of synthetic adsorbents for few hundred times
» Simple machinery construction
» Simple handling
» Easy installation
» Minimum supervision
» Field operation in all weather conditions
» Minimal power consumption (0.5-3 kW)
