Connecting device for a high-tension machine.

p0001The invention relates to a connecting device for a high voltage machine according to the preamble of claim 1, for connecting shielded by Starkstromkabet attached thereto cable connector machine fixed to the housing is arranged and connected to coil terminals having cast resin bushings

p0002In one of the magazine "electricity industry", born in '83 (1984), No. 2, esp. Page 58, Figure 3 and the magazine "electric service" 25, 1983, Issue 1, Pages ₁₄/₁5 known connecting device of this type are releasably secured to a metal terminal plate arranged in the triangle cast resin bushings with integrally formed round mounting flanges, in the plug-side conical ends each have a receptacle for the plug pins of the cable connector is embedded from the machine-side ends of the cast resin bushings each connected terminal bolt protrude with the sockets where the winding terminals connected terminals are screwed contacting manner. The cast resin bushings are aufgesefzt with its mounting flanges of the cable side to the outer side of the terminal plate and between the connecting plate and the machine housing a abstandsvergrößemder separate port is arranged to ensure the necessary insulating clearances in air of uninsulated joints against each other and adjacent machine parts. In addition, because of the nozzle are necessary measures to shield the cast resin bushings in the area between the cable connector and terminal board. Since the connection of cable lugs can only take place after mounting the assembled terminal plate including the nozzle on the machine housing to the connecting bolts of the cast resin bushings, the socket has a closable BedienungsOffnung is provided, which further increased the burden on the terminal device, the connecting or disconnecting cables shoes the terminal stud is time consuming and cumbersome

p0003The invention has for its object to provide a connecting device of the aforementioned type, which is simpler in construction, does not require shielding measures and with reduced space requirement considerably easier assembly on the machine housing allows

p0004This object is achieved by the characterizing features of claim 1.

p0005Advantageous embodiments of the invention are further claims.

p0006By sinking of the compounds of the winding connections with their contact_körpem in the machine-side ends of the insulating body of cast resin bushings, these ends can be arranged on the machine side surface of the connection plate with their fixing flanges closer to or moved into the machine housing and the cast resin bushings close to each other, instead of a separate, relatively high neck a much flatter trough is sufficient or may the connection plate may be completely flat. The use in post insulators known square mounting flange allows an even closer arrangement the smallest possible space, because at the same hole spacing in the mounting flanges the edge length for square mounting flanges smaller than the diameter of round fastening flanges The arranged on the plate inside cast resin bushings are with their male side ends less far from machine housing from and allow the outside at their tapered ends as Paßsitze for cable connector, a cover of the gap between the ends and the associated through openings in the connection plate. The application of the one-piece connection plate on Klemmenkastenflansch the machine housing also makes it extra special shields for cast resin bushings superfluous.

p0007In the drawing, embodiments of the invention for a three-phase connection device are shown and detail hereinafter which:<ul><li>FIG. 1 is a fitted with three cast resin bushings connecting device in plan view</li><li>Fig. 2 shows a section according to the line II-II of the article of FIG. ₁</li><li>Fig. 3 is a casting resin bushing in longitudinal section,</li><li>Fig. 4 is a modified unpopulated connection plate in plan view</li><li>Fig. 5 shows a section according to the line VV of the object in Fig. 4</li></ul>

p0008Referring to FIGS. 1 and 2, a one-piece connection plate 3 is provided with a trough 4, which is surrounded on three sides by a plate edge 3A and on the fourth side by a lying in the same plane surface portion 3B. The flat middle section 4A of the trough₄ has three insertion openings 4B for cast resin bushings 6, which are arranged centrally at the corners of an imaginary equilateral triangle. Each insertion openings 4B are four arranged at the corners of an imaginary square screw passages 4C assigned, not shown by the from the cable side (top) mounting screws for cast resin bushings 6 in threaded blind holes 6E of the square mounting flanges 6D (Fig. 3) can be screwed, so that 6D the mounting flanges in the hollow countersunk on the flat inner side of the central part 4A on Befestigungsflanschdichtungen 7 are held in contact with the side surfaces of the square of all mounting flanges cast resin bushings 6 are parallel to each other in the shortest possible distance from one another and from the bowl edge 4D. To the trough 4 four mounting holes 3F in card edge 3A and the surface portion 3B are arranged distributed through the mounting screws not shown extend, the 12 can be screwed into threaded holes in Klemmenkastenflansch 1 A of the dashed lines indicated machine housing 1 with the interposition of a gasket. The contour of the recess 4 is adapted to the shape of the surrounded by Klemmenkastenflansch 1 A port opening 2 in the machine housing. In the present case it has the shape of a square with two bevelled edge faces. Within this outline, the cast resin bushings 6 are arranged closely adjacent in said manner

p0009At the free end of the flat surface portion 3B angedeudete cable fasteners 5 are attached, their height above the plug-side end 6A of cast resin bushings extends to male-side tapered ends 6A of cast resin bushings are not cable connector shown plugged in angular shape and lie against the annular shoulder 6B. Characterized the gaps between the insertion openings 4B, and the cylindrical intermediate portions 6C, the cast resin bushings 6 are covered by the cable connectors. The the machine interior led out insulated winding terminals 11 are firmly conductively connected to cylindrical Kontaktkörpem 9 and sunk by the open end 6G in machine end 6F each casting resin bushing 6 is inserted into the respective socket 8 and a contact-making connected thereto by an operable from the plug side fastening screw 10th The faces 6G lie outside the trough. 4

p0010In Fig. 3 is a casting resin bushing 6 according to the invention with indicated potential control is enlarged in a longitudinal section with an inserted coil terminal 11 shown. The one-piece cast resin with molded square mounting flange 6D, in which the four blind threaded holes 6E provided includes a conical plug-side end 6A and a likewise conical machine-side end 6F. The end 6A passes through an annular shoulder 6B in a cylindrical intermediate section 6C, the Befestigunsflansch 6D is between the end and the 6F. The height of the intermediate portion 6C is so selected that the annular shoulder 6B protrudes over the center part 4A of the trough 4th

p0011The resin body contains in the region of the end 6A to the mounting flange 6D in its central passage a socket 8. The socket 8 with contact blades for the terminal pin of the cable connector has at its machine-side end 8A a cylindrical accommodating space 8B with a front side conical counter-contact surface 8C, the Schraubendurchlaß a surrounds.

p0012, The receiving space 8B has its end a sufficient axial distance from the open end face 6G and receives the cylindrical contact body 9 with a conical contact surface 9C to complete, wherein the contact body 9 with its cylindrical part has a radial distance to the cylindrical part of the accommodating space 8B. The contact surface 9C surrounds a screw 9B for the fixing screw 10, which is supported with its screw head in the oberen- part of the female contact. The contact body 9 has a frontally open cavity 9A of the fastenings of the bare end of the winding terminal 11, wherein the insulation of the winding terminal is located within the cavity 8B.

p0013By recessed position of the contact body 9 the necessary insulating clearances in air can at smallest possible intervals of cast resin bushings from each other and the machine housings are respected, so that the arrangement of the mounting flanges on the inside of the terminal board is possible. This arrangement reduces the outer space for the terminal board in addition. Since the release of the fastening screws 10 from the outside through the socket of the assembled cast resin bushings is easily possible, the assembly effort is considerably reduced.

p0014A particularly compact rigid terminal plate 3 with trough of corrosion-resistant aluminum is shown in FIGS. ₄ and 5, which is reduced in width to the width of the trough 4, and adjacent only to the inclined trough sides triangular edge portions 3A as well as a provided with an angled retaining surface 3C surface portion 3B and the recess edge 4D, the surface portion 3B and the holding surface 3C molded reinforcing rib 3D, via which protrude the holding surface 3C. The protruding portion of the holding surface of the cable fixing means 5 can be fixed selectively to one or the other side together with a reinforcing strip 5A, so that an adaptation to different lengths of the cable angle plug is easily possible. At the free bowl rim₄D and on two side surfaces of the surface portion 3B 3E fastening lugs are integrally formed, in which a cover, not shown, can be releasably attached.

p0015The rib may also be shared as a connection point for grounding conductor and this have connection bores 3G. This particularly rigid terminal plate holds the due short circuit currents acting dynamic forces from safe. The cover provides a secure protection for the delicate cast resin bushings including Kabelsteckem.