The V30 CJC™ VACUUM FILTER is designed to remove moisture, oxygen and other gases from transformer oil. The PLC control of the unit provides highly efficient degassing and drying of oils. Furthermore the built in fine filter (3 µm absolute) removes contaminating particles.

By lowering the oxygen content (down to 200ppm) and moisture content (down to 3 ppm) in the transformer oil the ageing processes (oxidation processes) of the insulation cellulose and oil are slowed considerably thereby extending the operational life of the transformer.

The ultimate pressure in the vacuum chamber is 2 mbar. This pressure is reached when the transformer oil is virtually free of gases and moisture.

85% of all gases and 75% of the water will be removed from the oil in one pass. The V30 systems have been installed on transformers ranging in size from 2000 to 55000 L of oil. read more >>

Quote from one of the case studies:
The water content of the oil on the test transformer was reduced from 21 ppm to 4 ppm over 18 months...