Spark gap with a plurality of single spark gaps connected in series in a stacked arrangement

Abstract

The invention relates to a spark gap comprising a number of series-connected individual spark gaps which are placed in a stack arrangement, which are spaced apart from each other by insulating material discs and are provided with a spring contact, the individual spark gaps including ring-shaped or disc-shaped electrodes, and further comprising control elements for influencing the voltage distribution over the stack arrangement. According to the invention the ring-shaped or disc-shaped electrodes required to form one of the respective individual spark gaps are each inserted into an insulating body and held by same in a centered manner. The respective insulating material discs are located between and fixed by the insulating bodies. A recess is provided inside the insulating body to receive and center the electrodes, whose shape is complementary relative to the contour of the respective electrode, wherein the recess comprises on the inner circumference at least partially elastic, resilient centering projections or centering noses.

Description

technical field [0001] The invention relates to a spark gap with a plurality of single spark gaps connected in series in a stacked arrangement, separated from each other by sheets of insulating material and provided with spring contact leads, said single spark gaps With electrodes in the form of rings or plates, the spark gap also has control elements to influence the voltage distribution on the stack. Background technique [0002] In known direct current applications, the arc current must be forced to zero by raising the voltage required for the arc to a value greater than the available supply voltage (principle of direct current extinction). According to the known arc equation, different starting points can be derived to raise the voltage of the arc involved, according to which the total arc voltage is obtained by summing the anode / cathode voltage drop and by the product of arc length and arc field strength . [0003] A particularly effective solution is to connect a plu...

AI Technical Summary

Problems solved by technology

Because the material is plastically deformed under thermal influences, e.g. due to continuous flow of the flow and the constant pressure due to the screw connection of the laminated structure, and the individual separation gaps can thus be short-circuited

Such damage cannot be detected and indicated due to insufficient thermal coupling of the protective device that may be provided, resulting in tearing of the welded edge of the separation gap material when reloading, and no longer between the two electrodes. There are defined and as far as possible gap-free transitions and unintended rises of the protection level cannot be avoided

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