| 摘要 |
The invention relates to a shielding element for the use in medium voltage switchgears with vacuum interrupters with at least two contacts, which are movable along a switching path between closed and open contact position, wherein the shielding element is positioned around the contact position region in the vacuum interrupter, wherein at least the inner surface of the shielding is applied with a topographic structure which is a rough or a structured surface, according to claim 1. In order to enhance the energy absorbance behavior of the at least the shielding, the implemented topographic structure is formed in such a way, that by given constant or approximately constant volume (Vi) of the shielding body, the surface ratio of the treated surface (S2) with implemented surface structure, and a untreated surface (S1) without topographic structure is greater than 1, so that this follows the condition V1 ~ V2 and S2/S1 >1. |
