DEVICE FOR REMOVING MOISTURE OF INSULATING OIL FOR ON-LOAD TAP CHANGER FOR TRANSFORMER

摘要

The insulating oil of a load switching stage used in electrical transformers includes a drying process to remove moisture. the load switching stage (4) is immersed within an oil filled container (2). A connecting pipe (5) couples with an expansion chamber (6). The air above the surface is connected to atmosphere through a tube (8) that includes a drying stage (7). A feed pipe (9) couples back to the oil container and contains a filter (12) to remove particles. The expansion chamber (6) is provided with cooling ribs.