Sealed-unit switching device useful in circuit breakers comprises a spring mounted on the end of the moving shaft connected to the moving contact of a switch in a tank of insulating gas

摘要

Sealed-unit switching device comprises a switch (2) with a fixed contact (4) and a moving contact (5) located in a gas tank (1) filled with insulating gas; a current-carrying moving shaft (9) connected to the moving contact; a pressure-adjusting spring (19) connected to the moving shaft; a drive shaft (17) passing through the wall of the gas tank; a drive mechanism (18) that actuates the switch and is mounted on the drive shaft outside the tank; and an insulating collar (11) between the drive shaft and the spring.