| 摘要 |
The invention relates to an overvoltage arrester system (1) for protecting an electrical installation (4) from an overvoltage or impermissible amount of energy, comprising a first metal oxide arrester (6) in a first current path (10) and a second metal oxide arrester (8) in a second current path (12) connected in parallel with the first current path (10). The problem addressed by the invention is that of said overvoltage arrester system being suitable for arresting especially high amounts of energy, in particular from pulsed energy inputs, while at the same time being especially fail-safe. This problem is solved in that in a current range, a voltage/current characteristic curve (18) of the first metal oxide arrester (6) has a lower voltage than a voltage/current characteristic curve (20) of the second metal oxide arrester (8) at the same current, and the first current path (10) has a switch (14). |
