Development of global vacuum pressure impregnation insulation system for turbine generators

Fuji Electric has developed a global vacuum pressure impregnation insulation system for large size turbine generators (F-resin/G II insulation system) together with introduction of required manufacturing equipment since 1990, and had put into practical use in 1993. After that, numerous generators having maximum output of 158 MVA have been manufactured utilizing this insulation system and have been operated successfully. Though this insulation system is mainly applied to air cooled turbine generators with output range of from 20 to 260 MVA, it is also possible to manufacture hydrogen cooled turbine generators with output range of from 50 to 340 MVA, utilizing the merits of global vacuum pressure impregnation insulation system.