Abstract: An encapsulated and partitioned switching system employing compressed gas insulation. For each bus bar system (I, II, III) there is provided a coupling field (KFI, KFII, KFIII) in which are installed a first bus bar end section (6.sub.I, 6.sub.II, 6.sub.III), at least a first disconnect switch (2) and a coupling switch (3), while a second bus bar end section (7.sub.I, 7.sub.II, 7.sub.III) is always disposed in an adjacent coupling field (KFI, KFII).

Abstract: Tensioning device for a driving spring of an energy store for an electrical switch, the device including: a drive shaft carrying a crank articulated to the driving spring; a rotatable tensioning shaft; mechanism connected for rotating the tensioning shaft; at least one overrunning clutch coupled to the drive shaft; and a transmission mechanism connected between the tensioning shaft and the drive shaft for imparting at least one unidirectional stepwise rotational advance to the drive shaft with each revolution of the tensioning shaft, wherein the tensioning shaft and the transmission shaft have respective axes of rotation which are nonparallel to one another.