SWITCHING INSTALLATION WITH PRESSURE CONTROLLED SHORT-CIRCUIT DEVICE

The invention relates to a switching installation comprising: - a gas tight housing with at least one wall part; - an input conductor for carrying an input voltage, the conductor being arranged in the housing; - an insulation arranged around the input conductor to insulate the input conductor from the housing; - a short-circuit device changeable from a first condition, in which the insulation is insulating the input conductor from the housing, to a second condition, in which an electrical short circuit connection is created through the insulation between the input conductor and an auxiliary connection; - an actuator coupled to the at least one wall part of the gas tight housing for actuating the short-circuit device upon movement of the wall part as a result of a pressure increase in the housing; and threshold means for providing a preset threshold in the actuator.