Abstract:
A busbar system (10) comprises a busbar (14) with at least two parallel arranged phase conductors (33) running between a first end (28a) and a second end (28b) of the busbar (14) and at least two feeders (16a, 16b) connected onto the busbar (14), each feeder (16a, 16b) comprising contacts (34) for at least some of the phase conductors (33) of the busbar (14); a first supply line (24a) and a second supply line (24b) interconnecting the first feeder (16a) and the second feeder (16b) with a common power supply (18); wherein a first feeder (16a) of the at least two feeders is connected onto the first end (28a) of the busbar (14) and a second feeder (16b) of the at least two feeders is connected onto the second end (28b) of the busbar (14); wherein each of the first supply line (24a) and the second supply line (24b) has a higher impedance than the busbar (14).
Abstract:
The power switch has a current flow path (7) with two supply terminals (1, 2) and a double breaking contact arrangement. The contact arrangement includes two series connected contact systems (10, 15), in which the current flow path extends in two sections guided parallel to one another. Said sections are formed by an arc (21, 22) during a switching operation. The contact parts (11, 12) of both contact systems are connected to one another and to both supply terminals (1, 2) in such a way that the current in both sections has the same direction. As a result, both arcs (21, 22) attract each other and displacement of the arcs relative to one another is prevented. Both arcs run synchronously into the arc extinction chamber (28, 29) with great reliability and are extinguished therein practically at the same time. The power switch is characterized by high cutout capability.