EP1454396A2 - Traversee - Google Patents

Traversee

Info

Publication number
EP1454396A2
EP1454396A2 EP02799035A EP02799035A EP1454396A2 EP 1454396 A2 EP1454396 A2 EP 1454396A2 EP 02799035 A EP02799035 A EP 02799035A EP 02799035 A EP02799035 A EP 02799035A EP 1454396 A2 EP1454396 A2 EP 1454396A2
Authority
EP
European Patent Office
Prior art keywords
section
bushing
implementation according
holding
folding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02799035A
Other languages
German (de)
English (en)
Inventor
Gildo Mahn
Achim Milbich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1454396A2 publication Critical patent/EP1454396A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/02—Open installations
    • H02G5/025—Supporting structures

Definitions

  • the invention relates to a bushing for supporting electrical conductors and in particular electrical busbars in air-insulated medium-voltage systems.
  • Feedthroughs enable electrical conductors to be led through a surface of different potential and thereby isolate these two components from one another.
  • medium-voltage systems in particular, which are composed of several control panels, it is also desirable to design bushings between the control panels so that in the event of an arc fault, its effects remain limited to a specific control panel.
  • Such feedthroughs must therefore be able to withstand the pressure that arises in the event of an arc in order to prevent the conductors from bending while increasing the distance or from moving the arc into other switching fields.
  • bushings which comprise a fastening plate made of metal or insulating material and a cast resin section with bushing openings.
  • the cast resin section is used to control the electric field and to extend the creepage path leading over the surface of the cast resin section from the busbar to the encapsulating housing of the system.
  • the cast resin section is not non-positively connected to the fastening plate. Due to this lack of mechanical stability, the repulsive or attractive forces that occur in the event of a short circuit can occur between the current-carrying conductors are no longer included.
  • cast resin supports are therefore provided according to the prior art. However, these additional components increase the effort in the manufacture, maintenance and assembly of the bushings.
  • a bushing made of a plastic material is known from prior public use, which has elevations to increase the creepage distance.
  • cast resin supports are also provided in this known implementation, which complicate the manufacture, assembly and maintenance of the implementation.
  • DE 36 39 626 AI discloses a bushing made of rubber with a mounting flange for attaching the bushing to a wall of a switch panel in medium-voltage switchgear.
  • the bushing disclosed here comprises an insulating body which has an axial cavity open on both sides for receiving a rod-shaped electrical conductor.
  • annular outer ribs are provided.
  • a collar-shaped ring screen is integrally formed on the side of the flange section facing away from the annular outer ribs, which radially delimits an end-side recess of the flange and also serves to increase the creepage distance.
  • this described bushing has extensions on both sides of the fastening flange that extend along the conductor to be received, so that the components adjacent to the wall can only be mounted at a distance due to the bulkiness of the bushing.
  • a bushing which is composed of an inner outer cone and an outer outer cone. An axial cavity for receiving an electrical conductor is provided within these outer cones. This implementation also extends on both sides of a wall through which the electrical conductor is to be guided.
  • the invention is therefore based on the object of providing a bushing which allows the most compact possible arrangement of other components even in the immediate vicinity of the bushing, the bushing being simple to manufacture and simple to assemble.
  • the invention solves this problem by a bushing for supporting electrical conductors with a flange section, a folding section projecting therefrom in the longitudinal direction of the electrical conductors and at least one holding section which has through openings provided on both sides for receiving the electrical conductors, the bushing being formed in one piece and each holding section is supported only on the flange section via the folding section.
  • the one-piece design of the implementation not only enables the implementation of the implementation to be particularly simple and economical, but moreover also simple assembly.
  • the bushing is attached to its flange section on the housing wall, for example of a medium-voltage switchgear, with the busbars or busbar cables being pushed into the through openings. Additional components for mechanical stabilization of the implementation have become unnecessary according to the invention.
  • the folding section of the bushing according to the invention provides the creepage paths necessary for avoiding an unwanted current flow for both sides of the bushing, the folding section however starting from
  • Flange section extends only in one direction along the electrical conductors to be taken out and, for example, into an encapsulated air-insulated switch panel. Further components can therefore be arranged in the immediate vicinity of the control panel, which enables a compact design according to the invention.
  • the folding section is expediently designed such that the holding section is arranged in the region of the through opening in the plane which is defined by the side of the flange section facing away from the folding section. In this way, an almost flat contact surface is formed, which is only interrupted by a cavity which is closed on one side and is delimited by the folding section.
  • the configuration of the bushing and in particular the dimensioning of the holding section in the longitudinal direction of the electrical conductors is advantageously adapted to the currents occurring in the event of a short circuit and the forces generated thereby.
  • the material selection is decisive, in which material properties such as bending modules, elasticity, pressure load and the like are to be optimized in order to achieve the highest possible mechanical stability of the implementation.
  • the stability of the implementation is also determined by the geometrical arrangement and design of the individual sections and thus foot sizes such as stabilizing bridges, number, Arrangement and design of the holding sections, number of
  • three holding sections are provided, which are arranged offset to one another in a plane running transversely to the longitudinal direction of the electrical conductors, so that a triangular arrangement is created. It is advantageous that the holding sections are not too far apart, so that the folding section surrounds them in the form of a closed circumferential contour without significant changes in its radius of curvature or any other configuration. In this way, partial areas of the folding section are avoided which are completely separated from one another by areas which spring back into the plane of the flange section. In this context, however, it should be pointed out that such folding sections with separate, raised partial areas are also the subject of the present invention.
  • a mechanically stabilizing bridge section is integrated into the folding section, which does not delimit a holding area but rather a distance area designed without a through opening.
  • the bridge section reinforces the folding section by shortening its outer circumference.
  • Each holding section can have one or more through openings corresponding to the respective current strength.
  • the through openings are adapted to the outer contour of the busbar, so that the necessary support and stabilization occurs, but at the same time it is possible to push the busbar into the through opening by hand is. In a preferred further development, three through openings are provided.
  • the bushing according to the invention is advantageously made of fiber-reinforced plastic.
  • the fiber-reinforced plastic is a fiber-reinforced polyester.
  • the bushing according to the invention is made of glass fiber reinforced polyester.
  • the side walls of the folding section do not have to run parallel to one another. In the context of the invention it is entirely possible that they span an angle between 1 ° and 10 °.
  • the radius of the curve on the closed side of the folding section is, for example, between 6 and 14 millimeters.
  • the holding gates expediently have rounded corner regions, since this rounded configuration leads to a further stabilization of the holding section.
  • the holding section circular.
  • the layer thickness of the bushing is between 5 and 10 mm.
  • FIG. 1 shows an embodiment of the implementation according to the invention in a perspective view
  • FIG. 2 shows the implementation according to FIG. 1 in a top view
  • FIG. 3 shows a view of the bushing and cut along line A-A shown in FIG. 2
  • Figure 4 is a sectional view of the bushing taken along line B-B shown in Figure 2.
  • FIG. 1 shows an exemplary embodiment of the implementation 1 according to the invention in a perspective view.
  • the bushing 1 comprises a plate-shaped flange section 2 with two mutually parallel surfaces, a folding section 3 and a holding section 4.
  • the folding section 3 is integrally formed on the flange section 2 and extends from it in the axial direction to a curve 5 the folding section 3 springs back axially into the holding section 4, which is arranged essentially at the same axial height as the flange section 2.
  • the flange section 2 has notches 6, which make it particularly easy to attach the bushing 1 to the wall of a switch panel, not shown.
  • the wall expediently has a recess, the course of which corresponds to the outer contour of the folding section, so that the folding section 3 extends into the housing of the stress field after the bushing is fastened to the wall.
  • Figure 2 shows the implementation of Figure 1 in a plan view. It can be seen that the holding section 4 has a through opening 7 which is used to receive a collecting rail is provided. In addition to the through opening 7 shown with continuous lines, two further through openings 7 shown in dashed lines can be seen.
  • This representation is intended to indicate that the implementation according to the invention can also be set up to accommodate busbar trains which, for example, consist of three busbars running parallel to one another. In this case, as indicated, three through openings 7 running parallel to one another would be provided in the holding section 4.
  • the through openings 7 are slit-shaped and have two parallel side walls which are connected to one another via rounded narrow sides.
  • the distance between the parallel side walls, the distance and the radius of the rounding of the narrow sides is adapted to the design and dimensioning of the busbar in such a way that the busbar can be inserted into the through opening 7, but at the same time a holding contact necessary for mechanical stabilization is provided ,
  • three holding sections 4 are provided for supporting three individual busbars with different voltage phases.
  • Holding sections 4 completely surrounded by the folding section 3 extending in the axial direction. In the exemplary embodiment shown, however, the holding sections are arranged so close to one another that a bend in the corner regions adjoins two holding sections 4.
  • the folding section 3 between the lower holding sections 4 arranged at a height was not interrupted, but was formed continuously with the formation of a bridge 8. In this way, a spacing area 9 is formed, which is also surrounded by the folding section 3, but which does not have a through opening 7 for holding busbars under tension.
  • the holding sections 4 and thus the folding sections 3 have rounded corners.
  • FIG. 3 is a sectional view of an exemplary embodiment of the bushing 1 according to the invention along the line AA in FIG.
  • the folding section 3 By folding the folding section 3, sufficiently large creepage distances are provided between conductors of different potential on both sides of the bushing 1 in order to prevent an unwanted current flow through the bushing 1.
  • the flange section 2 and the holding section 4 are arranged on one level. This configuration satisfies two objectives. On the one hand, the largest possible creep ways provided. On the other hand, a compact design of the bushing 1 is achieved in this way with a large and flat contact surface.
  • the bushing 1 shown in the figures as an exemplary embodiment of the invention could be manufactured in a simple manner using the pressing process.
  • a glass fiber-reinforced polyester which is available from the US company Haysite, was used as the production material.
  • FIG. 4 shows a sectional view of bushing 1 along line B-B of FIG. 2. It can be seen that the thickness of the flange section 2 and the holding section 4 is different. In the exemplary embodiment shown, the flange section 2 has a thickness of 7 mm. The holding section 4 is made more stable. Its thickness is 12 mm.
  • arc faults could be successfully limited to a specific area of the busbar, even with surge short-circuit currents of 135 kV.

Abstract

L'invention concerne une traversée (1) servant de support à des conduits électriques et comprenant une partie bride (2), une partie repli (3) faisant saillie relativement à la partie bride dans le sens longitudinal des conduits électriques, et au moins une partie retenue (4) pourvue d'orifices de passage (7) ouverts des deux côtés pour réceptionner des barres omnibus. L'invention vise à réduire les coûts de fabrication et à simplifier le montage d'une traversée de ce type. A cet effet, ladite traversée (1) est formée d'une seule pièce, chaque partie retenue (4) étant en appui sur la partie bride (2) seulement au moyen de la partie repli (3).
EP02799035A 2001-12-14 2002-12-13 Traversee Withdrawn EP1454396A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10164563 2001-12-14
DE10164563A DE10164563C1 (de) 2001-12-14 2001-12-14 Durchführung
PCT/DE2002/004687 WO2003052893A2 (fr) 2001-12-14 2002-12-13 Traversee

Publications (1)

Publication Number Publication Date
EP1454396A2 true EP1454396A2 (fr) 2004-09-08

Family

ID=7711200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02799035A Withdrawn EP1454396A2 (fr) 2001-12-14 2002-12-13 Traversee

Country Status (5)

Country Link
US (1) US7060902B2 (fr)
EP (1) EP1454396A2 (fr)
DE (1) DE10164563C1 (fr)
MX (1) MXPA04005700A (fr)
WO (1) WO2003052893A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060103100A1 (en) * 2004-11-18 2006-05-18 Meritor Suspension Systems Company, U.S. Integrated stabilizer bar bushing and strap
US7760104B2 (en) * 2005-04-08 2010-07-20 Entegris, Inc. Identification tag for fluid containment drum
DE102005059754B4 (de) * 2005-12-09 2010-05-27 Siemens Ag Spritzgussgeformte Außenkonusdurchführung
US9419424B2 (en) * 2011-08-24 2016-08-16 Abb Schweiz Ag Switchgear bus support bushing structure
EP2568554A1 (fr) * 2011-09-12 2013-03-13 ABB Technology AG Support intégré pour la fixation de bus électriques
US9667051B2 (en) * 2015-10-30 2017-05-30 Rockwell Automation Technologies, Inc. Power terminal enclosure for power conductors

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
US2611002A (en) * 1949-04-26 1952-09-16 Westinghouse Electric Corp Bus bar bushing structure for electrical apparatus casings
DE1803970U (de) * 1958-02-25 1960-01-14 Voigt Haeffner Ag Anordnung fuer die halterung und durchfuehrung von verbindungsleitungen in hochspannungsschaltanlagen.
US3243835A (en) * 1963-04-18 1966-04-05 Gen Motors Corp Bushing for electrical lead
US3482537A (en) * 1967-10-18 1969-12-09 William Carter Co The Machine for attaching labels and similar articles
US3801727A (en) * 1972-09-25 1974-04-02 Rostone Corp Composite electrical transformer housing
US4000829A (en) * 1973-08-16 1977-01-04 Johnson Enterprises, Inc. Container closure unit
DE3515421A1 (de) * 1985-04-29 1987-02-26 Felten & Guilleaume Energie Verbindungsvorrichtung fur gasisolierte schaltanlagen
DE3639626A1 (de) * 1986-11-20 1988-06-01 Bbc Brown Boveri & Cie Durchfuehrung fuer elektrische leiter
US5083477A (en) * 1991-01-31 1992-01-28 Gould Inc. Control knob locking assembly
DE4404339A1 (de) 1994-02-11 1995-08-17 Sachsenwerk Ag Schaltanlage mit einem Verbindungskanal
US5569891A (en) * 1994-02-14 1996-10-29 Abb Power T&D Company, Inc. High performance circuit breaker with independent pole operation linkage and conical composite bushings
US5635674A (en) * 1994-06-13 1997-06-03 Owen; Donald W. Sealed passage for electrical leads across a barrier
US5530205A (en) * 1994-07-29 1996-06-25 Eaton Corporation Apparatus for securing bus bars to switches in alternative positions
DE19728370A1 (de) * 1997-07-03 1999-01-07 Bosch Gmbh Robert Kabeldurchführung für Anschlußkabel eines Gasmeßfühlers
USD411508S (en) * 1998-01-16 1999-06-29 Central Moloney, Inc. Bushing well
DE69816299T2 (de) * 1998-10-06 2004-02-05 Nexans Durchführung für einer elektrischer Vorrichtung
US6372994B1 (en) * 1998-12-01 2002-04-16 David Servies Wrapped film sealing system for electrical equipment
DE19952431A1 (de) * 1999-10-30 2001-05-03 Daimler Chrysler Ag Anschlußgruppe für ein Stromrichtergerät
JP3634301B2 (ja) * 2001-11-16 2005-03-30 本田技研工業株式会社 シール部材

Non-Patent Citations (1)

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Title
See references of WO03052893A2 *

Also Published As

Publication number Publication date
DE10164563C1 (de) 2003-06-18
US20050067182A1 (en) 2005-03-31
MXPA04005700A (es) 2004-12-06
US7060902B2 (en) 2006-06-13
WO2003052893A3 (fr) 2003-09-04
WO2003052893A2 (fr) 2003-06-26

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