Solid insulating vacuum ring main unit

The utility model relates to a solid insulating vacuum ring main unit which comprises a vacuum switch, an isolating switch, at least three insulating seats and a sleeve, wherein the vacuum switch comprises a vacuum arc extinguish chamber, a vacuum switch operating mechanism and an insulating drawbar, the isolating switch comprises a static contact, a contact knife, an isolating drawbar, a grounding contact and an isolating switch operating mechanism, the moving end of the vacuum switch is connected with the static contact by a flexible connecting rib, the isolating switch operating mechanism is interlocked with the vacuum switch operating mechanism, the contact knife corresponds to the static contact and the grounding contact respectively, each insulating seat forms a single-phase electric loop, every three insulating seats form a tri-phase electric element, live working parts of the corresponding isolating switch and the vacuum switch are isolated by the insulating seats, the insulating grade is raised, and