It is a must to do transformer oil dehydration and degassing before filling into new transformer and old transformer maintenance. Transformer oil is used in power equipment where it provides cooling and insulation protection. Over time aggregated moisture, gasses and solid particles can seriously affect these properties. In order to remove moisture, gasses, and solid particles, the oil treatment equipment needs to be used.
Description of Oil Treatment Equipment
- Vacuum Dehydration and Degassing System
For dehydration and degassing the rotary vane, a vacuum pump or pumps with an optional vacuum booster roots pump are used. Vacuum chamber houses a variable amount of highly efficient ring mesh to achieve most efficient treatment of oil. Vacuum breaking valves before and after the vacuum chamber ensure the vacuum side and the pressure side of the oil treatment plant are completely separated.
- Heating System
Oil is heated by electrical heaters with surface efficiency below 1.1 W/cm, with indirect heating to prevent local overheating.
- Filtration System
Oil at the outlet is filtered by a fine filter up to 0.5-micron to filter out solid particles before returning the oil back to the transformer.
- Oil Transfer System
All oil treatment plants optionally possess a positive displacement rotary inlet pump. The outlet pump is a centrifugal closed coupled high suction pump.
- Controlling System
Equipment is fully automatic, optionally controlled by PLC logic and interfaced with a SCADA system.
- Safety System
Numerous safety features are introduced throughout the plant to ensure the safety of the equipment as well as the operating personal. Aeration valves, overheating protection, and automatic level switches guarantee the safety of the equipment as well as its ability to identify a possible risk and to power down to prevent any accidents.
- Oil Flow Control System
All oil treatment plants have automatic variable oil flow control to maximize user comfort during operation.