WO2019201429A1 - Appareil d'interconnexion électrique de deux barres omnibus polyphasées stratifiées et agencement de tableau de contrôle comprenant un tel appareil - Google Patents

Appareil d'interconnexion électrique de deux barres omnibus polyphasées stratifiées et agencement de tableau de contrôle comprenant un tel appareil Download PDF

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Publication number
WO2019201429A1
WO2019201429A1 PCT/EP2018/059783 EP2018059783W WO2019201429A1 WO 2019201429 A1 WO2019201429 A1 WO 2019201429A1 EP 2018059783 W EP2018059783 W EP 2018059783W WO 2019201429 A1 WO2019201429 A1 WO 2019201429A1
Authority
WO
WIPO (PCT)
Prior art keywords
phase
laminated
busbar
clamping elements
layers
Prior art date
Application number
PCT/EP2018/059783
Other languages
English (en)
Inventor
Maciej Mruczek
Original Assignee
Abb Schweiz 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 Abb Schweiz Ag filed Critical Abb Schweiz Ag
Priority to PCT/EP2018/059783 priority Critical patent/WO2019201429A1/fr
Publication of WO2019201429A1 publication Critical patent/WO2019201429A1/fr

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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
    • H02G5/005—Laminated bus-bars
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/005—Electrical connection between switchgear cells
    • 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
    • H02G5/002—Joints between bus-bars for compensating thermal expansion
    • 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
    • H02G5/007—Butt joining of bus-bars by means of a common bolt, e.g. splice joint

Definitions

  • the invention is related to an apparatus for electrically interconnecting two laminated multi-phase busbars, in particular for low voltage or medium voltage installations, according to the preamble of claim 1 and a switchboard arrangement including such an apparatus according to claim 10.
  • Multi-phase busbars are used in low voltage switchgears to conduct and distribute alternating electrical current to different electrical devices which are installed in switch gear cabinets.
  • laminated multi-phase busbars have been developed which comprise a base layer and a cover layer of electrically insulating material between which two or more layers of conducting sheet metal, in particular copper sheets, are arranged which are electrically insulated from each other by means of insulating intermediate layers.
  • the lateral connecting portions are also used to provide an electrical connection between different busbars in two or more switch gear cabinets which are arranged in a row, in order to efficiently feed the electric energy from a power source to the busbars of a plurality of interconnected switchgear cabinets.
  • the lateral connecting portions serve to reduce the lengths of laminated busbars, as long busbars for large switchgear cabinets can be spilt up into a plurality of shorter busbar sections which are joint at the customer site, in order to ease handling and reduce transportation costs.
  • the electrical connection of the conducting layers of one busbar or busbar section to the conducting layers of an adjoining busbar or bus bar section at the lateral connecting portions is usually done by means of stiff joints or stiff bridging elements each of which has two terminal members which are interconnected by a stiff bridging element and which are clamped to the contact sections of the conducting layers which are to be electrically connected.
  • the conducting layers and the contact sections provided thereat are preferably made of copper or aluminium and may have a thickness in the range between 0.5 and 5.0 mm or more.
  • Another problem which occurs when electrically connecting the lateral connecting portions of two adjoining busbar section to each other by a stiff mechanical connection can be seen in that manufacturing tolerances and assembly tolerances as well as a thermal expansion of the joined busbars due to different electric loads attached to the system may result in the occurrence of internal strain in the material which increases the risk of a mechanical and electrical failure of the busbars.
  • a further problem of a rigid connection between two busbars is the occurrence of a creeping of the polymeric or composite insulating material or even the creeping of the adhesive which provides for the bonding of the different layers of a laminated busbar.
  • Fig. 1 is schematic top view of a first and a second busbar which are
  • Fig. 2 is 3 dimensional sectional view of an apparatus of the present invention
  • Fig. 3 is a cross sectional view of the apparatus and connected busbars of
  • Figs. 1 and 2 and Fig. 4 is a cross sectional view in a lateral direction of the apparatus of Fig 1 in a plane intersecting the bolt elements.
  • a first laminated multi-phase busbar 2a and a second multi-phase laminated busbar 2b include a plurality of conducting copper layers 6 and intermediate insulating layers 8 which are arranged between the conducting layers 6.
  • the conducting layers 6 of the first laminated multi-phase busbar 2a which may be accommodated in a first switch gear cabinet (not shown) project from the insulating layers 8 and form a first lateral connecting portion 4a with first contact surfaces 6a1 to 6a4.
  • the conducting layers 6 of the second laminated multi-phase busbar 2b which may be accommodated in a second switch gear cabinet (not shown) project from the intermediate insulating layers 8 thereof, so as to form a second lateral connecting portion 4b with second contact surfaces 6b1 to 6b4.
  • an apparatus 1 for electrically connecting the first laminated multi-phase busbar 2a with the second multi-phase laminated busbar 2b comprises a first clamping arrangement 10a which includes a plurality of first clamping elements 1 1 a and a plurality of first terminal members 10a1 to 10a4 which are adapted to be clamped to the first contact surfaces 6a1 to 6a4 of the lateral connecting portion 4a of the first bus bar 2a by means of the first clamping elements 11 a.
  • the apparatus 1 further comprises a second clamping arrangement 10b which includes a plurality of second clamping elements 1 1 b and a plurality of second terminal members 10b1 to 10b4 which are adapted to be clamped to the second contact surfaces 6b1 to 6b4 of the second lateral connecting portion 4b of the second busbar 2b by means of the second clamping elements 1 1 b.
  • a second clamping arrangement 10b which includes a plurality of second clamping elements 1 1 b and a plurality of second terminal members 10b1 to 10b4 which are adapted to be clamped to the second contact surfaces 6b1 to 6b4 of the second lateral connecting portion 4b of the second busbar 2b by means of the second clamping elements 1 1 b.
  • each of the first terminal members 10a1 to 10a4 is electrically interconnected with an associated second terminal member 10b1 to 10b4 by an electrically conducting bridging element 12.1 to 12.4.
  • the first terminal member 10a1 and the associated second terminal member 10b1 are connected to the bridging element 12.1 which bridges the upper most conducting layers 6 of both busbars 2a, 2b
  • the first terminal member 10a2 and the associated second terminal member 10b2 are connected to the bridging element 12.2 which bridges the conducting layers 6 that are arranged below the upper most conducting layer 6 of Fig. 3.
  • each of the bridging elements 12.1 to 12.4 comprises a core 12a of a flat flexible conducting material, which is covered an electrically insulating coating 12b.
  • the coating 12b may be a flexible insulating polymer as it is known from electric cables.
  • the core 12a is a flat strip of braided copper to which a respective pair of first and second terminal members 10a1 , 10b1 ; 10a2, 10b2; 10a3, 10b3 and 10a4; 10b4 is attached at opposing sides, so as to form a corresponding bridging element 12.1 to 12.2 for bridging the associated conducting layers 6 of the two busbars 2a and 2b, which are configured to conduct and distribute the three electric phases and protective earth of an alternating electric current in two interconnected switch gear cabinets (not shown).
  • the core 12a of each bridging element 12.1 to 12.4 may be a multi-layer stack of thin copper sheets which are arranged relatively movable to each other on top of each other.
  • the pairs of first and second terminal members 10a1 , 10b1 ; 10a2, 10b2; 10a3, 10b3 and 10a4; 10b4 are attached to the end portions of the multi-layer stack of copper sheets at opposing sides thereof.
  • the plurality of first terminal members 10a1 to 10a10 and first clamping elements 1 1 a is arranged in a first housing 16a, whereas the second clamping elements 1 1 b and terminal members 10b1 to 10b4 are accommodated in a second housing 16b of the apparatus 1.
  • the housings are preferably formed of a rigid electrically insulating material, like fiber reinforced resin.
  • the housings 16a, 16b may be formed of different housing elements, which may include central T-shaped support elements 17 which are arranged above each other in different layers.
  • the bridging elements 12.1 to 12.4 extend between the first and second housing 16a, 16b, so that the apparatus 1 can be handled and installed as one unit if desired.
  • the bridging elements 12.1 to 12.4 which connect the corresponding conducting layers 6 of the first and second busbars 2a, 2b are arranged in different layers or levels which are spaced apart from each other at substantially equal distances.
  • the levels extend preferably between two of the afore mentioned T-shaped support elements 17 of the housings 16a, 16b.
  • the core 12a of each bridging element 12.1 to 12.4 comprises a plurality of core sections which are spaced apart from each other by e.g. 5 mm to 5 cm or more, in order to allow for a movement of the lateral portions 4a, 4b of the first and second busbar 2a, 2b relative to each other, as it is shown in Fig. 1 and 2.
  • the core sections correspond to the flat strips of braided copper or the multi-layer stack of copper sheets. Alternatively, instead of copper aluminium may be used also.
  • the electrically conducting bridging elements 12.1 to 12.4 or its core sections may also be spaced apart from each other in a direction perpendicular to the lateral direction, preferably in equal distances.
  • the planes in which the different core sections of each of the bridging elements 12.1 to 12.4 extend can also be slightly curved or bend, as it is indicated in Fig. 2 and 3.
  • first clamping elements 1 1 a and/or the second clamping elements 1 1 b may be biased in groups by an associated bolt element 18 which extends in a direction perpendicular to the contact surfaces of the afore mentioned first terminal members 10a1 to 10a4 and/or second terminal members 10b1 to 10b4, respectively, as it can be best seen from Figs. 2 and 3.
  • each of the bolt elements 18 extends through a plurality of sleeves 20 which are aligned to each other in the first clamping arrangement 10a and in the second clamping arrangement 10b, respectively.
  • a plurality of holes may be formed in the housings 16a, 16b and in each clamping element 1 1 a, 11 b, through which the each bolt 18 extends in the vertical direction.
  • Each of the sleeves 20 is preferably made of an insulating material and comprises a shaft which extends through a hole in an abutting contacting element and a collar which contacts an adjoining surface of a clamping element 1 1 a, 1 1 b and a T- shaped support element 17 of the housing 16a, 16b, respectively.
  • each bolt 18 may be provided with a threaded end portion to which a nut 18a can be screwed, as it is indicated in Fig. 3.
  • ring-shaped spacer elements 19 of an electrically insulating material on the side of the clamping elements 11 a, 1 1 b which is opposite to the collar of the sleeves 20.
  • the shafts of the sleeves 20 have an outer diameter which is smaller than the inner diameter of the ring-shaped spacer elements 19, so that the shaft of the sleeves 20 is received in the spacer elements 19 in a sliding manner, so as to allow for a reduction of the distance between the clamping elements 1 1 a, 1 1 b and the T-shaped support elements 17 of the housing when tightening the nuts 18a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)

Abstract

L'invention concerne un appareil (1) permettant de connecter électriquement une première barre omnibus polyphasée stratifiée (2a) à une seconde barre omnibus polyphasée stratifiée (2b), chacune desdites première et seconde barres omnibus polyphasées stratifiées (2a, 2b) comprenant une pluralité de couches conductrices (6) et de couches isolantes intermédiaires (8) qui sont disposées entre lesdites couches conductrices (6), et lesdites couches conductrices (6) de ladite première barre omnibus polyphasée stratifiée (2a) faisant saillie à partir desdites couches isolantes intermédiaires (8) de celle-ci, pour former une première partie de connexion latérale (4a) avec des premières surfaces de contact (6a1 à 6a4) et lesdites couches conductrices (6) de ladite seconde barre omnibus polyphasée stratifiée (2b) faisant saillie à partir desdites couches isolantes intermédiaires (8) de celle-ci formant une seconde partie de connexion latérale (4b) avec des secondes surfaces de contact (6b1 à 6b4), l'appareil (1) comprenant un premier agencement de serrage (10a) avec une pluralité de premiers éléments de serrage (11a) et une pluralité de premiers éléments de borne (10a1 à 10a4) qui sont conçus pour être électriquement connectés auxdites premières surfaces de contact (6a1 à 6a4) de ladite première partie de connexion latérale (4a) par lesdits premiers éléments de serrage (11a) et un second agencement de serrage (10b) avec une pluralité de seconds éléments de serrage (11b) et une pluralité de seconds éléments de borne (10b1 à 10b4) qui sont conçus pour être serrés sur lesdites secondes surfaces de contact (6b1 à 6b4) de ladite seconde partie de connexion latérale (4b) par lesdits seconds éléments de serrage, chacun desdits premiers éléments de borne (10a1 à 10a4) étant électriquement interconnecté avec un second élément de borne (10b1 à 10b4) associé par un élément de pontage électroconducteur (12.1 à 12.4), étant caractérisé en ce que chaque élément de pontage (12.1 à 12.4) comprend un noyau (12a) d'un matériau conducteur flexible plat et un revêtement électriquement isolant (12b) entourant ledit noyau (12a).
PCT/EP2018/059783 2018-04-17 2018-04-17 Appareil d'interconnexion électrique de deux barres omnibus polyphasées stratifiées et agencement de tableau de contrôle comprenant un tel appareil WO2019201429A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/059783 WO2019201429A1 (fr) 2018-04-17 2018-04-17 Appareil d'interconnexion électrique de deux barres omnibus polyphasées stratifiées et agencement de tableau de contrôle comprenant un tel appareil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/059783 WO2019201429A1 (fr) 2018-04-17 2018-04-17 Appareil d'interconnexion électrique de deux barres omnibus polyphasées stratifiées et agencement de tableau de contrôle comprenant un tel appareil

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Publication Number Publication Date
WO2019201429A1 true WO2019201429A1 (fr) 2019-10-24

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PCT/EP2018/059783 WO2019201429A1 (fr) 2018-04-17 2018-04-17 Appareil d'interconnexion électrique de deux barres omnibus polyphasées stratifiées et agencement de tableau de contrôle comprenant un tel appareil

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3863139A1 (fr) * 2020-02-04 2021-08-11 ABB Schweiz AG Connexion de barres omnibus laminées adjacentes sous accès arrière limité
WO2023066773A1 (fr) * 2021-10-20 2023-04-27 Lisa Dräxlmaier GmbH Barre omnibus double
US11791597B2 (en) * 2021-02-05 2023-10-17 Aptiv Technologies (2) S.À R.L. Flexible electrical bus bar and method of manufacturing the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945188A (en) * 1987-08-14 1990-07-31 Cableware Pty. Ltd. Bus system
DE102005015945A1 (de) 2005-04-07 2006-10-12 Abb Patent Gmbh Kontakteinrichtung für eine zwei- oder mehrphasige Stromschienenanordnung
KR20100089153A (ko) * 2009-02-03 2010-08-12 엘에스전선 주식회사 내진동성이 향상된 전력 버스 덕트
WO2013166562A1 (fr) * 2012-05-10 2013-11-14 Lightworker Reflections Pty Ltd Tableau électrique lamellaire
EP2683040A1 (fr) * 2011-03-02 2014-01-08 AutoNetworks Technologies, Ltd. Ensemble de barres omnibus, et procédé de fabrication de celui-ci

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945188A (en) * 1987-08-14 1990-07-31 Cableware Pty. Ltd. Bus system
DE102005015945A1 (de) 2005-04-07 2006-10-12 Abb Patent Gmbh Kontakteinrichtung für eine zwei- oder mehrphasige Stromschienenanordnung
KR20100089153A (ko) * 2009-02-03 2010-08-12 엘에스전선 주식회사 내진동성이 향상된 전력 버스 덕트
EP2683040A1 (fr) * 2011-03-02 2014-01-08 AutoNetworks Technologies, Ltd. Ensemble de barres omnibus, et procédé de fabrication de celui-ci
WO2013166562A1 (fr) * 2012-05-10 2013-11-14 Lightworker Reflections Pty Ltd Tableau électrique lamellaire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3863139A1 (fr) * 2020-02-04 2021-08-11 ABB Schweiz AG Connexion de barres omnibus laminées adjacentes sous accès arrière limité
US11791597B2 (en) * 2021-02-05 2023-10-17 Aptiv Technologies (2) S.À R.L. Flexible electrical bus bar and method of manufacturing the same
WO2023066773A1 (fr) * 2021-10-20 2023-04-27 Lisa Dräxlmaier GmbH Barre omnibus double

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