In May, 2006, the 800kV GIS was started to develop since the 800kV CB has been successfully developed
Detailed introduction to 800kV GIS:
800kV GIS
This type product has passed type tests from February to May 2007 and so far in service in many projects.
The CB is double-break structure with two single-interrupter in series, equipped with hydraulic or pneumatic mechanism.