Kapselungsbaustein mit einem kombinierten Trenn-Erdungs-Schalter für eine gasisolierte Schaltanlage

摘要

The invention relates to combined disconnecting-earthing switches which are integrated in a conducting path inside an encapsulation module in gas-insulated switchgears and which have a switching element in the form of a linearly displaceable sliding contact piece with a contact area on the encapsulation side. The aim of the invention is to provide a means of homogenising the current distribution which requires as little space as possible. To this end, the isolating path (61) is located parallel to the central axis (14) of the outgoing area (13) of the encapsulation housing (1) and the earthing path (64) is arranged at an angle (68) of 90-150 DEG to the isolating path. The sliding contact piece is divided into two sliding contact pieces (53, 55), each of which are linked by a coupling member (74, 75) to a pivoting lever (71). An encapsulation module of this type is suitable especially for use with three-phase encapsulated switchgears at the crossover point between the busbar and the circuit breaker and the crossover point between the circuit breaker and the outgoing side.