This paper analyzed the manufacturing level of 1 100 kV SF6 gas insulated metal enclosed switchgear（GIS） of both domestics and abroad

and specifically introduced the design

constructions characteristics and type test of 1 100 kV

6 300 A/63 kA GIS manufactured by Xi’an XD Switchgear Electric Co.

Ltd..The capacity of CB with breaking short-current 63 kA under the conditions of declining time constant 120 ms of DC component

rated current reaches 6 300 A.The DS with two constructions: one with damping resistor and the other without damping resistor

the busbar joint adopts spherical transferring constructions

which can fulfill different connection requirement.The current transformer adopts the external type with integral casting constructions

and the integral product adopts the lower layout with good seismic performance.This UHV switchgear completed all item of type test which is carried in National Quality Supervision and Inspection for high voltage apparatus according to IEC 62271-100—2006、IEC 62271-203—2003、IEC 62271-1—2007、IEC 62271-102—2002 etc under the witness of national grid expert

and it has passed the product identification of National Energy Bureau.The appraisal committee considers that the product has independent intellectual property rights

and reaches the international advanced level.