High-altitude porcelain sleeve for GIS (Gas Insulated Switchgear)

The utility model relates to the technical field of high-altitude ultrahigh-voltage switch equipment, and discloses a high-altitude porcelain sleeve for a GIS (Gas Insulated Switchgear), which comprises a hollow porcelain insulator, a grading ring, a wire holder, a double-shielding device, a conducting rod, a transition flange and a support bus, the upper end of the hollow porcelain insulator is connected with the wire holder, the lower end of the hollow porcelain insulator is connected with the supporting bus through the transition flange, the double-shielding device is fixed on the transition flange, the upper end of the conducting rod is fixed on the lower flange surface of the wire holder, the lower end of the conducting rod is assembled with the supporting bus, and the two ends of the wire holder are respectively provided with a grading ring. The explosion-proof cable has good explosion-proof performance, insulativity, mechanical property and universality, is safer and more reliable to use and stable in