Surge voltage arrester with reduced minimum operating surge voltage
AssigneeSiemens Aktiengesellschaft
InventorAxel Hahndorff
Life of this patent
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Abstract
A surge voltage arrester has a gas-filled housing in which main electrodes are disposed opposite one another, and supported by a tubular insulating member on whose interior side at least one ignition strip extends over a portion of the tube length. There is applied, on the exterior side of the insulating member at least one electrically conductive layer, clamp, or electrode, which at least partially overlaps, from the exterior, the ignition strip. The arrester has a low impulse breakdown voltage, so that the difference between the impulse breakdown voltage and the DC breakdown voltage is substantially reduced.
Claims12
A surge voltage arrester, comprising a gas-filled housing incorporating two main electrodes disposed opposite one another, said electrodes being supported in a gastight fashion by the ends of a tubular insulating member, at least one coating of electrically conductive material extending over a portion of the interior length of said insulating member, at least one electrically conductive surface on the exterior of said insulating member which at least partially overlaps said coating, and means adapted to establish an electric field between said coating and said surface.
The method of operating a surge voltage arrester having a pair of main electrodes supported at opposite ends of a tubular insulating member, said tubular insulating member having an electrically conducting coating extending along a portion of the length of said insulating member on the interior thereof, and an electrically conductive surface juxtaposed with the exterior of said insulating member and at least partially overlapping said coating, comprising the steps of;
- connecting said coating to the main electrode which is the more negative in electrical potential, and connecting said surface with the other main electrode.
Dependencies are inferred from the claim text.