In order to satisfy the switching equipment’s technique requirements for our country AC extra-high voltage experiment demonstration project

the domestic high-voltage switchgear manufactures introduce and digest foreign technique of manufacture for 1 100 kV（GIS）.At the same time

through the union research and development design

the cooperative production and home manufacture’s way

they has mastered the extra-high voltage switching gear’s core technologies

the fabrication technology and the packaging technique comprehensively

has supplied production to the extra-high voltage experiment demonstration project

completed the installation and trial run well.Base on the Research and Development

technical specifications and structures of 1 100 kV GIS

The key technology of 1 100 kV GIS has analyzed by various computing methods

including the key techniques of the breaking system

the insulation system

the resistance calorific capacity

the high efficiency operation mechanism

the isolator structure for suppressing the over voltage caused by switching surge

the online observation system and so on。 Through above key technologies research

the whole insulation level of 1 100 kV GIS

current capability

resistance calorific capacity

resistance fracture

online supervisory system has improved dramatically and innovated again.Through implementation of the project

promoted the course of domestic manufacturing for our country large-scale compressed gas insulation equipment’s manufacture

sharpened the manufacturing capacity domestically of our country extra-high voltage power transformer equipment’s manufacture.