Structure for operating vacuum switch chambers with a piezo actuator couples the piezo actuator to a mechanical/hydraulic system to pick up a movable contact drive in a vacuum switch chamber for switching off the switch chamber.

摘要

Coupling a piezo actuator (7) to a mechanical/hydraulic system picks up the drive for a movable contact in a vacuum switch chamber (8) and stretches a reserve of spring force (3) for required contact pressure and for switching off the switch chamber. A voltage supply (10) provides the necessary energy. A control circuit (9) triggers the piezo actuator insulated inside or outside a gas or liquid insulator.