WO2000041282A1 - Appareil de support et d'alimentation pour dispositifs electriques - Google Patents

Appareil de support et d'alimentation pour dispositifs electriques Download PDF

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Publication number
WO2000041282A1
WO2000041282A1 PCT/EP1999/009326 EP9909326W WO0041282A1 WO 2000041282 A1 WO2000041282 A1 WO 2000041282A1 EP 9909326 W EP9909326 W EP 9909326W WO 0041282 A1 WO0041282 A1 WO 0041282A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
support
supply apparatus
busbars
insulator
Prior art date
Application number
PCT/EP1999/009326
Other languages
English (en)
Inventor
Rodolfo Fontana
Alessandro Leone
Original Assignee
Abb Ricerca S.P.A.
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 Ricerca S.P.A. filed Critical Abb Ricerca S.P.A.
Publication of WO2000041282A1 publication Critical patent/WO2000041282A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H02B1/21—Bus-bar arrangements for rack-mounted devices with withdrawable units

Definitions

  • the present invention relates to a support and power supply apparatus for electrical devices having improved functions and characteristics.
  • the apparatus according to the present invention has a structure which is simple both from the point of view of production and in practical use, allowing to facilitate assembly, optimize the support and insulation of busbars and improve the supply of power to the electrical devices connected thereto.
  • distribution panels for distributing electric power to a plurality of elect ⁇ cal devices use a system of mutually parallel metal bars, each of which is connected to a corresponding polarity of the power supply system.
  • the connection between the busbars and the electrical devices is provided by means of suitable devices which must ensure adequate mechanical support of the electrical device and must facilitate its electrical connection to the busbars.
  • the use of conventional support and power supply apparatuses entails drawbacks and disadvantages.
  • one of the main shortcomings of conventional apparatuses is their limited flexibility in use.
  • the aim of the present invention is to provide a support and power supply apparatus for one or more electrical devices which is highly flexible in use and which allows electrical connection of the busbars to devices even of mutually different kinds, without having to significantly affect its constructive elements during production.
  • an object of the present invention is to provide a support and power supply apparatus for one or more electrical devices whose elements allow simple and rapid mutual assembly of the busbars and of the devices.
  • a support and power supply apparatus for one or more electrical devices comprising a system of busbars, insulators for supporting said busbars and junction conductors for electrically connecting the busbars to the electrical devices, characterized in that said junction conductors have a body which has, on two parallel faces, respectively clamping means for coupling to a busbar and a substantially cylindrical element for connection to terminals of said electrical devices, each one of said junction conductors being contained in an insulating enclosure constituted by two coupled half-shells.
  • the apparatus according to the invention differs from conventional devices because of the modularity and the extreme simplicity of its elements, which allow to considerably facilitate the connection between electrical devices and busbar systems, making assembly steps practically automatic. Further characteristics and advantages of the present invention will become apparent from the following detailed description of preferred but not exclusive embodiments of the apparatus according to the invention, illustrated only by way of non-limitative example in the accompanying drawings, wherein:
  • Figures l a and lb are perspective views of two possible embodiments of junction conductors used in the apparatus according to the invention
  • Figure 2 is a plan view of a clamper for connection to a busbar used in the junction conductors of Figures la and lb
  • Figures 3 and 4 are perspective views of two half-shells that constitute an enclosure used in the apparatus according to the invention to contain the junction conductors of Figures la and lb;
  • Figures 5-8 are perspective views of the coupling of the half-shells shown in Figures 2 and 3 with the junction conductors shown in Figures la and lb;
  • Figure 9 is a perspective view of a U-shaped element for fastening the enclosure to a busbar;
  • Figure 10 is a view of a lateral insulator for supporting the busbars
  • Figure 1 1 is a view of a central insulator for supporting the busbars
  • Figure 12 is a view of a retaining element which can be coupled to the lateral insulator of Figure 10 to lock the busbars;
  • Figure 13 is a view of an extraction-preventing U-shaped element which can be coupled to the central insulator of Figure 11 ;
  • Figure 14 is a perspective view of a profiled element for covering and insulating the busbars;
  • Figures 15- 1 8 are views of the various steps of the coupling of electrical devices to a system of busbars by using a support and power supply apparatus according to the invention
  • Figure 19 is a view of a possible configuration of an electrical panel obtainable by using the apparatus according to the invention.
  • Figure 20 is a view of a possible embodiment of the profiled element of Figure
  • the support and power supply apparatus comprises a system of busbars N, LI, L2, L3 which are mutually parallel and are arranged at a preset insulation distance from each other, as shown in figure 16.
  • Said busbars are electrically connected to one or more electrical devices 100, for example one or more circuit breakers; the type of electrical device 100 and the number of busbars can obviously differ according to the applications and/or to specific requirements.
  • the electrical connection between the system of busbars N, LI , L2, L3 and the electrical device 100 is provided by means of a set of junction conductors 10,
  • each junction conductor 10 is connected to a corresponding busbar of the system; advantageously, as shown in Figures la and lb, each junction conductor 10,
  • 1 1 , 12, 13 has a body 7 which is substantially shaped like a parallelepiped and lias, on two parallel faces, respectively clamping means 8 for coupling to a busbar N. LI . L2, L3 and a substantially cylindrical element 9 for connection to a corresponding terminal 101 of one of the devices 100.
  • the connection between the cylindrical element 9 and the corresponding terminal of the electrical device can be provided by way of ordinary fixing means, such as for example screws.
  • the clamping means comprise a clamper 8 which has a substantially straight base 1 which is fixed to the body 7 of the conductor and from which two oblique and convergent elemetns 2 and 3 protrude.
  • the end parts of the portions 2 and 3 both end with an arc shaped edge, designated by the reference numerals 4 and 5 respectively, which is directed toward the base I .
  • the clamper 8 forms a seat 6 which allows a simple yet effective coupling to the busbar; the clamper 8, by means of the two arc shaped edges 4 and 5, in fact grips the busbar inside the seat 6 and ensures, along the longitudinal extension of said edges, an adequate contact surface, optimizing space occupation.
  • each junction conductor 10, 1 1, 12, 13 is contained in an insulating enclosure 14 constituted by two half-shells 15 and 16 which are shown in Figures 3 and 4 respectively.
  • the two half-shells are mutually identical and have a plurality of seats 29 for coupling to the busbars and a substantially L-shaped end 17 which constitutes a means for direct engagement to a supporting structure; said structure, generally designated by the reference numeral 20, can be constituted for example by the frame of a cabinet for a distribution panel.
  • the half-shells 15 and 16 On the surface of the end 17, the half-shells 15 and 16 have a raised portion 18 and a shaped protrusion 19 which forms a seat 21 for accommodating a U- shaped element 22 for the purposes described hereinafter; the element 22 has a U-shaped cross-section and is shown in Figure 9.
  • Each half-shell 15 and 16 further has removable wings 23 which are formed along the longitudinal extension of said half-shell and two half-holes 25 and 26 which can be coupled to two similar half-holes provided in the other half-shell; moreover, the constructive structure of each half-shell is conceived so as to form a seat 28 for a junction conductor, and it is also possible to provide a third half-hole on each half-shell in order to obviate any change in position of the cylinder 9 on the body 7. As shown schematically in Figures 5-8, according to the dimensions of the junction conductor to be used, which depend on the phase of the busbar to which it will be connected, a wing 23 of the half-shell 15 or of the half-shell
  • the two half-shells are substantially identical to each other and can also accommodate conductors having different dimensions, it allows to advantageously provide economies of scale: moreover, the two half-shells are extremely easy to assemble and therefore simplify assembly. It is also notable that the assembly constituted by the enclosure and the conductor constitutes a single module which is dedicated to the connection between a busbar of a given electrical phase and a terminal of a device. This, for example, as shown in Figure 19, allows to couple a plurality of mutually different circuit breakers to a same busbar without having to significantly modify the steps of the production of the individual devices.
  • Suitable insulators are associated with the busbar system N, LI, L2, L3; their main function is to electrically insulate the busbars and support them mechanically, fixing them to the supporting structure 20. In this manner, any electrodynamic stresses produced by the flow of current through the busbars are discharged onto the structure 20, which is stronger.
  • the apparatus according to the invention uses at least two types of insulator which are structurally different from each other and are made for example of thermoplastic or thermosetting material.
  • Figure 10 illustrates an insulator 40 which 'is generally fitted to the sides of the supporting structure 20 relative to a front view of said structure and is spaced from the electrical devices to be connected to the busbars.
  • the insulator 40 termed lateral insulator hereinafter, has along a central portion a plurality of seats 41 for coupling to the busbars; seats 41 have the particularity that they offer exclusively lateral accesses to the busbars, relative to a front view, indicated in the figure by the arrow A.
  • the front wall 42 of the lateral insulator 40 and the outer edges 43 of the seats 41 further form seats 44 for accommodating a busbar retaining element 45 which is shown in Figure 12.
  • the busbar retaining element 45 has two mutually diverging arms 46, both of which have a hook-shaped end part 47 which is suitable to engage the outer edges 43.
  • Wings 48 are formed at the two ends of the insulator 40 and have a substantially T-shaped cross-section in which the two horizontal portions 49 are fastened directly to the supporting structure 20 and the vertical portion 50 has a hole 5 1 for coupling to fixing means, such as for example nuts and bolts.
  • the second type of insulator used in the apparatus according to the invention hereinafter termed central insulator, is shown in Figure 1 1 and is generally designated by the reference numeral 60; the insulator 60 is generally fitted so as to be laterally adjacent to the devices to be connected to the busbars and in a substantially central position of the supporting structure 20.
  • the central insulator 60 has a plurality of seats 64 for coupling to the busbars; in this case, the seats 64 have a rear access for the insertion of the busbars, with reference to a frontal view indicated by the arrow A.
  • the central insulator 60 has, at its ends, wings 65 which have a T-shaped cross-section and whose horizontal portions 61 mate geometrically with the corresponding walls of the frame 20. Holes 63, partially shown in the figure, are formed in the vertical portion 62 of the wings 65 and are suitable to mate with an extraction-preventing U-shaped element 70.
  • the extraction-preventing U-shaped element 70 comprises two portions which respectively have a C-shaped cross-section 71 and a U- shaped cross-section 72, are mutually blended and are arranged on substantially perpendicular planes.
  • the body of the insulators 40 and 60 advantageously has a central region 80 which is structured so as to have a grid of stiffening ribs which allow to reduce the amount of material used while providing the necessary structural rigidity.
  • two lateral insulators 40 are fixed to the ends of the supporting structure 20 during assembly; then the busbars N, LI , L2, L3 are inserted in the seats 41.
  • the busbar retaining elements 45 are inserted in the scats 44.
  • the adoption of seats 41 which have only lateral accesses facilitates 5 the insertion and precise positioning of the busbars; the busbar retaining elements 45 further contribute to the correct fixing of the busbars.
  • the insulating enclosures 14 that contain the junction conductors are placed in a substantially central region of the structure 20; by means of this operation, the busbars are inserted in the seats 29 and each one of the clampers 8 engages a lo corresponding busbar.
  • a U-shaped element 22 is inserted in each seat 21 and turned so as to make one of its parallel arms interact with the raised portion 18 and make the other arm couple geometrically to the structure 20.
  • the central insulators 60 are fixed to the sides of each group of enclosures 14 i s by inserting the busbars in the seats 64; an extraction-preventing U-shaped element 70 is inserted in each hole 63.
  • the portion of the U- shaped element 70 that has a U-shaped cross-section 72 is inserted in the hole 63, making the C-shaped portion 71 interact with the vertical wall 62. If there is a single device 100 to be connected to the busbars, a single group of 0 enclosures 14 is used and accordingly there are only two central insulators 60 arranged to the sides of the group of enclosures.
  • the number of central insulators 60 that can be used increases because an additional central insulator 60 is to be inserted between two neighboring devices.
  • the free portions of the busbars that lie between the central insulators 60 and the lateral insulators 40 can be covered by means of suitable insulating profiled elements 90 shown in Figure 14.
  • the various electrical devices to be connected are installed by placing the connecting terminals at the cylinders 9 that protrude from the enclosures 14 and by providing the connection by way of ordinary fixing means.
  • the support and power supply apparatus according to the invention is particurai y suitable for use in an electric switchboard.
  • the present invention also relates to an electric switchboard characterized in that it comprises a support and power supply apparatus according to the invention.
  • the apparatus according to the invention fully achieves the intended aim and objects, since it has a simple structure which ensures rapid and precise assembly and allows extreme flexibility in application.
  • the apparatus in fact allows to connect a plurality of devices having mutually different dimensions to the same busbar system; in this manner it is possible to have different electrical panel configurations, allowing for example to install a series of circuit breakers supplied in a row or to have a main circuit breaker which supplies the secondary ones; space occupation is furthermore minimized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Unwinding Webs (AREA)
  • Crushing And Grinding (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Patch Boards (AREA)

Abstract

Cette invention se rapporte à un appareil de support et d'alimentation pour dispositifs électriques, qui comprend un système de barres omnibus, d'isolateurs destinés à soutenir ces barres omnibus et de conducteurs de jonction servant à connecter électriquement les barres omnibus aux dispositifs électriques. Les conducteurs de jonction sont constitués par un corps qui comporte, sur deux faces parallèles, respectivement une pince destinée à s'accoupler à une barre omnibus et un élément cylindrique destiné à s'associer aux bornes des dispositifs électriques, chacun des conducteurs de jonction étant contenu dans une enceinte isolante constituée par deux demi-coquilles couplées.
PCT/EP1999/009326 1998-12-30 1999-11-29 Appareil de support et d'alimentation pour dispositifs electriques WO2000041282A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998MI002863A IT1304073B1 (it) 1998-12-30 1998-12-30 Dispositivo di supporto e alimentazione di apparecchiature elettriche
ITMI98A002863 1998-12-30

Publications (1)

Publication Number Publication Date
WO2000041282A1 true WO2000041282A1 (fr) 2000-07-13

Family

ID=11381384

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/009326 WO2000041282A1 (fr) 1998-12-30 1999-11-29 Appareil de support et d'alimentation pour dispositifs electriques

Country Status (2)

Country Link
IT (1) IT1304073B1 (fr)
WO (1) WO2000041282A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227572A1 (de) * 2002-06-20 2004-01-15 Haendler Gmbh & Co. Kg Elektro-Installationssysteme Elektroinstallationsverteiler mit zumindest einem Stromsammelschienenhalter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5295042A (en) * 1993-01-06 1994-03-15 General Electric Company Double branch circuit breaker support
US5515236A (en) * 1994-11-14 1996-05-07 General Electric Company Motor control center universal electrical connector
EP0808006A2 (fr) * 1996-04-18 1997-11-19 Bticino S.P.A. Un tableau de distribution électrique pour interrupteurs de moyenne puissance

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5295042A (en) * 1993-01-06 1994-03-15 General Electric Company Double branch circuit breaker support
US5515236A (en) * 1994-11-14 1996-05-07 General Electric Company Motor control center universal electrical connector
EP0808006A2 (fr) * 1996-04-18 1997-11-19 Bticino S.P.A. Un tableau de distribution électrique pour interrupteurs de moyenne puissance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227572A1 (de) * 2002-06-20 2004-01-15 Haendler Gmbh & Co. Kg Elektro-Installationssysteme Elektroinstallationsverteiler mit zumindest einem Stromsammelschienenhalter
DE10227572B4 (de) * 2002-06-20 2004-07-01 Haendler Gmbh & Co. Kg Elektro-Installationssysteme Elektroinstallationsverteiler mit zumindest einem Stromsammelschienenhalter

Also Published As

Publication number Publication date
ITMI982863A0 (it) 1998-12-30
IT1304073B1 (it) 2001-03-07
ITMI982863A1 (it) 2000-06-30

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