The invention discloses a high-capacity upper and lower isolated
solid switch cabinet, and belongs to switch equipment of an
alternating current distribution network. The high-capacity upper and lower isolated
solid switch cabinet comprises at least one unit cabinet, and each unit cabinet comprises a three-phase high-
voltage vacuum switch unit, an upper isolated switch unit, a lower isolated switch unit, a lower grounding switch unit, a
bus bushing, a wire inlet and outlet
bushing and an operation mechanism. The
vacuum switch unit is arranged inside an insulating
barrel, and the insulating
barrel consists of an upper isolating cover, a lower isolating cover and an insulating cover. The upper and lower isolating covers are made of a
polycarbonate material, and the insulating cover is made of an
epoxy resin material; an upper isolating blade, a lower isolating blade and a lower grounding blade are arranged inside the upper and lower isolating covers respectively; the
bus bushing and the wire inlet and outlet bushing are arranged at the upper and lower ends of the insulating
barrel respectively; and the operation mechanism is arranged on the external side of a supporting plate on the uncovered surface of the insulating barrel. By placing
electrical equipment of the switch cabinet inside the insulating barrel made of the
solid insulating material and adopting a unit cabinet structural style, the switch cabinet is non-toxic and harmless, has a small volume, is convenient to install, is safe in use, saves the resources and prolongs the service life.