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AssigneeABB Schweiz AG
InventorsHansjorg Gramespacher, Felix Greuter, Michael Hagemeister
Estimating the term…
The surrounding body (1) serves to surround the end, a branching or a connecting point of a high-voltage cable. It has an element (3) with a nonlinear current-voltage characteristic line, which serves to control the electric field in the surrounding area. The field control element (3) contains a polymer and a filler embedded in the polymer und containing microvaristors, as well as at least a hollow body section extending along an axis (2) and designed flat, with an axially symmetrical inner surface conductive by deforming the surrounding body (1) to an outer surface of the cable. To ensure good field control in cables, which are operated at high voltages, the inner surface of the hollow body section is designed as a variation of the outer surface of the cable and in such a way that the field control in the surrounding area is achieved by altering the number of microvaristors per surface unit as a result of expansion and/or shrinking of the hollow body section after deforming.
A body for surrounding the end, a branching or a connecting point of a high-voltage cable with a first element having a nonlinear current-voltage characteristic and being designed for controlling the electrical field in the area of the surrounding, which field control element has a polymer and a filler embedded in the polymer and containing microvaristors as well as at least one hollow body section designed flat and extended along an axis, with an axial symmetrical inner surface guided to an outer surface of the cable by deforming the surrounding body, wherein the inner surface of the hollow body section is designed differently to the outer surface of the cable and in such a way that the field control is achieved by changing the number of microvaristors per surface unit as a result of expansion and/or shrinkage of the hollow body section after the deforming.
Dependencies are inferred from the claim text.