In an earthquake-proof manner on a safari disposed electrical high voltage device

摘要

In order for an electric high-voltage device (1) which is aseismic when floor-mounted to be rendered aseismic when column-mounted, as well, an at least partially hollow column (2) is at least partially filled with granular material, e.g. gravel (4). As a result, the natural frequency of the column (2) is increased far beyond the earthquake frequency. Moreover, in the event of a 'quake energy is "destroyed" by the friction of the grains, by possible comminution of the grains and/or by their plastic deformation. The filling also has a "damping" effect due to inertia. IMAGE