| 摘要 |
The invention relates to a method for connecting a DC voltage network section by means of a DC voltage switch (1) having two connection terminals (2,3), which comprises an operating current path (4) with a mechanical switch (7) and a turn-off current path (9) bridging the mechanical switch (7) and in which power semiconductor switches (10) that can be switched on or off are arranged. The turn-off current path (9) has a greater electrical resistance than the bridged section of the operating current path (9). According to the invention, the mechanical switch (7) opens and a current flow via the turn-off current path (9) is blocked. The first connection terminal (2) is then connected to a DC voltage source and the second connection terminal (3) to the DC voltage network section. Finally, a controlled voltage is applied to the DC voltage network section by actuating the power semiconductor switch (10), and the mechanical switch (7) is subsequently closed. |
