CABOIL Cable oil treatment plant

• Unique degassing and moisture removal vacuum technology
• Automated operation on online and offline transformers
• Most efficient oil processing in its class
• Works on all types of transformer oils

CABOIL cable oil treatment plant

The necessity for transformer oil dehydration and degassing is known for a long time. 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. To remove moisture, gasses, and solid particles oil treatment equipment needs to be used.

Description of oil treatment equipment

Oil is heated by electrical heaters with surface efficiency below 1.1 W/cm, with indirect heating to prevent local overheating. Oil at the outlet is filtered by a fine, up to, 0.5-micron filter to filter out solid particles before returning the oil back to the transformer. Equipment is fully automatic, optionally controlled by PLC logic and interfaced with a SCADA 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.

All oil treatment plants optionally possess a positive displacement rotary inlet pump. The outlet pump is a centrifugal closed coupled high suction pump. 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 coalescer filters combined with highly efficient ring mesh to achieve most efficient treatment of oil. All oil treatment plants have automatic variable oil flow control to maximize user comfort during operation. 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.