Circuit arrangement for a photovoltaic inverter for off-load relief with short-circuit switches and uses of the circuit arrangement

摘要

Circuit arrangement for a photovoltaic inverter (1) comprising: - two bus lines (8, 9), - input terminals (6) for connecting at least one photovoltaic generator (7) to the bus lines (8, 9), - at least one to the bus lines (8, 9 ) connected DC / AC converter (10), each DC / AC converter (10) via a respective disconnector (11) between the respective DC / AC converter (10) and the bus lines (8, 9) to the bus lines (8, 9), and - at least one short-circuit path (18) for short-circuiting a voltage present between the bus lines (8, 9), in which a short-circuit switch (19) is arranged, characterized in that - the at least one short-circuit path ( 18) electrically connects the bus lines (8, 9) with each other, - wherein the short circuit switch (19) in the at least one short circuit path (18) with a fuse (20) is connected in series; and - that at least one further short-circuit path (16, 17, 18 ', 18 ") for short-circuiting the voltage present between the bus lines (8, 9) is present, in which a short circuit switch (19) is also arranged.