Abstract
This text is designation about 110kv SF6 circuit breaker.Firstly,we take a simple introduction to the use and technical need of high volotage.Secondly,have a expandision about the physics and electrics character of SF6,and construal principle ,technical development about different SF6 ctrcuit breaker.Then,to design the self burned out electric arc circuit breaker,conclued computing theparameter about burned out arc room , isolated constuction ,shuting up electric brake and shunt winding condenser,sealing up construction.According the different the results of parameter to design the resonable construction SF6 circuit breaker.
Key word:110kv SF6 circuit breaker;constructual capability; burned out arc