An electrical direct current network for watercraft, as well as for offshore units, with an increased disconnection safety

摘要

In the case of an electrical direct current network (1) for under - and submarine vessels as well as for offshore units, with at least one direct current source (2), in particular a battery - and / or fuel cell plant, at least one electrical load (3), for example an electric drive motor or an on-board electrical system, and at least one shut-off device (4) for switching off of a in the direct current network (1) direct current flowing, wherein the shut-off device (4) in the network a connected vacuum switch (5) and a commutating device (8 or 9) through which a upon opening of the switch (5) arc generated can be erased, the disconnection safety can be increased in that the vacuum switch (5) a first switching pole (5a) and a second switching pole (5b), wherein the first switching pole (5a) in a current branch (6) of a positive pole of the direct current source (2) for the consumer (3) and the second switching pole (5b) in a current branch (7) of a negative pole of the direct current source (2) to the load (3) is connected, wherein the two switching poles (5a, 5b) are mechanically coupled with each other and wherein the shut-off device (4) for at least one of the two switching poles (5a, 5b), a commutating device (8 or 9) to delete a in this switching pole (5a or 5b) has arc produced.