DE1513912C - Process for the production of electrical shields and conductive layers for insulating cylinders provided with flanges in electrical high-voltage apparatus - Google Patents

Description

the. This triple stapling results in a mechanically particularly stable folding tape guide track.

In high-voltage equipment in which those in the immediate vicinity of the folding tape conductor track occurring electric field strengths are very high, it can be useful to place two superimposed To use folding tape conductor tracks, which are then to be laid so that the joints of the folded edges opposite each other so that they are completely relieved of electrical load.

1 sheet of drawings

Claims (1)

1 2 and then locally high field strength gradients Claim · occur that may become weak, in each However, this is often the case with unwanted partial discharges Process for the production of electrical also known as corona discharges lead Shields and baffles for with flanges 5 could. provided insulating cylinders, angular rings or the like. Such pre-discharges can be according to the invention ar.dere spatially multiple arrangement dimensions according to the one described in the main patent The electrical shields produced in high-voltage electrical equipment processes and avoid machines, in particular from edge field and conductive coverings, by removing the conductive shields in Transformer- and Dror.se'ispu- io den or semiconducting transverse bands with crimped lenwicklungen, a prefabricated web being provided with edges. Any length and width is used, which such a conductor path is called a folding tape conductor path denoted from parallel, metallically conductive. and weakly conductive transverse bands, which it is already an insulation arrangement for coils on one or more of electrical devices made of insulating material, e.g. B. current transformers whose existing longitudinal straps are attached, coils of one or more parallel-connected where the width of the weakly conductive transverse ribbon conductors exist, known at which each which is chosen so that they each have two of the parallelgeschalden on the lower and / or upper band Longitudinal carrier strips arranged metallically ended strip conductors with insulating material, for. B. Pressboard, cover conductive transverse strips at the same time, 20 is completely or partially surrounded (patent specification 23 403 and the weakly conductive transverse bands of the Office for Invention and Patents in Ostschuppen- or overlapping like a roof tile - Berlin). be arranged in such a way that the metallic conductors - As an example, there is the hammering in of the conductor earth Cross tapes on one side are shown several times completely tape in an insulating tape made of pressboard are covered, according to patent 1488 231, da- 25 and described, in such a way that the characterized in that the conductor strip on the center of the wider pressboard or semiconducting transverse tape is also inserted and the edges protruding on both sides folded edges. folded around the edges of the ladder tape the, so that the risk of interturn faults at the end faces of one isolated from one in such a way Tape wound coil is significantly reduced. : This is a pure insulating tape, in which the electric field strength cannot be influenced by a reversal. You can as a result 35 of this measure at best in solid insulating material. The main patent 1488 231 relates to a process. for the production of electrical shields and in the drawing are examples of an inven- Guide coverings for flanged insulating cylinders according to the rebate strip guide track reproduced,
the, angle rings or the like. Others spatially multiple In Fig. 1 are visible in a section from Deformed arrangements in electrical high-voltage 40 insulating material existing longitudinal tape 1, flaking apparatus and machines, in particular of shaped overlapping transverse tapes 2 with folded edge field shields in transformer and edges 5 and 6 attached. These edges abut choke coil windings, which is marked in gap 7. Instead of the previous cut edges, through the use of a prefabricated sheet which could possibly lead to extremely high gradients of any length and width from parallel running, 45 is now on the Edges 8 a well-metallically conductive and weakly conductive cross-ribs, rounded edge, on the surface of which is attached to one or more of the insulating material, the field strength is only a fraction of that on a standing longitudinal carrier tape, where there are sharp cut edges,
at the width of the weakly conductive transverse strips so. While in Fig. 1 the application of the invention is chosen that it is shown in each case two of the ⁵ ° with a folded band conductor track, the carrier longitudinal bands of which metallic guide- flake-like overlapping transverse strips from the transverse strips simultaneously overlap, and the uniform, metallically conductive or semi-conductor weakly conductive transverse strips are scaled or consist of the material is shown in FIG. 2 a folded tape roof tile overlapping interconnect is shown in which the transverse tapes 2 are approximately covered so that the metallic conductive transverse tapes on one side of folded guide paper with the joint 7 of the getig are completely covered several times. creased edges exist and in the case of the feeder The Leitbah- high currents produced according to this method, additionally metallic transverse bands 3 NEN allow a very considerable simplification when provided. F i g. 3 is a top plan view of the three dimensional shielding or FIG. 2 reproduced folding tape guideway.
Control coverings, since the further described 60 In Fig. 4 a folding tape conductor track is now Darge measures the transverse strips in the edge areas in which the conductive or semiconducting transverse are made easily deformable, tapes2 are folded in such a way that the strips shown in Figs. 1.2 In the case of very high electrical stress or and 3 joint 7 drawn narrowly now, even difficult forms of such shielding or is held. The longitudinal belt (s) I can control linings but must be expected at this wide open joint 7 not only that the sharp cut edges of the conductive folded edges 5 and 6 through corresponding or semiconductive transverse belts during the spatial bonding or a record other measure, so that the deformation can protrude somewhat from one another, to which the non-folded inside of the transverse strips