WO2014016095A1 - Dispositif de connexion - Google Patents

Dispositif de connexion Download PDF

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Publication number
WO2014016095A1
WO2014016095A1 PCT/EP2013/064114 EP2013064114W WO2014016095A1 WO 2014016095 A1 WO2014016095 A1 WO 2014016095A1 EP 2013064114 W EP2013064114 W EP 2013064114W WO 2014016095 A1 WO2014016095 A1 WO 2014016095A1
Authority
WO
WIPO (PCT)
Prior art keywords
axis
connecting device
conducting terminal
contact
parallel
Prior art date
Application number
PCT/EP2013/064114
Other languages
English (en)
Inventor
Gianluca Cortinovis
Gabriele Gasparini
Original Assignee
Abb Technology 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 Technology Ag filed Critical Abb Technology Ag
Publication of WO2014016095A1 publication Critical patent/WO2014016095A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches

Definitions

  • the present disclosure relates to a connecting device suitable for connecting a movable conducting terminal of a switching device, in particular of a circuit-breaker, to a stationary conducting terminal of a switchgear apparatus.
  • a pliers-contact-device is known for electrically connecting each movable terminal of a circuit breaker to a respective stationary terminal provided into a medium voltage switchgear.
  • the stationary terminal comprises a busbar which extends with a rectangular cross-section.
  • the pliers-contact- device comprises an electrically conducting support body having a fixing surface intended to be attached to the movable terminal, and, at an opposite side with respect to the fixing surface, a parallelepiped-supporting-portion extending longitudinally along a longitudinal axis parallel to such a fixing surface. From the two opposite largest sides of the parallelepiped-shaped-portion two respective conducting finger-clusters protrude which extend parallel to a second, approximately central axis which is orthogonal to the above mentioned fixing surface and to the. above mentioned longitudinal axis.
  • the two finger-clusters are mutually spaced so as to define therebetween a coupling cavity for receiving, and coupling with, an end portion of the stationary terminal.
  • Each finger-cluster comprises a plurality of finger portions adjacent to one other, each extending with a respective finger-axis parallel to the above-mentioned central axis.
  • Each finger portion is resiliently movable in a plane parallel to the central axis and orthogonal to the above mentioned longitudinal axis.
  • Such enlarged part has a tip which is outwards tapered along the respective finger-axis.
  • each tip comprises a ramp-surface lying along a plane which is tilted relative to the central axis and arranged parallel to the longitudinal axis of the parallelepiped-supporting-portion.
  • the circuit-breaker In order to establish a coupling of each movable terminal with the respective stationary terminal, the circuit-breaker must be necessarily moved along an in-service-insertion direction which is parallel to the above mentioned central axis.
  • a relative approaching movement of the busbar and the respective pliers-contact-device has to be accomplished necessarily in a direction along the central axis of the latter, so that the busbar, by acting on the tapered tips, can resiliently spread the finger portions thus entering the coupling cavity. Therefore, the known pliers- contact-device mounted on a circuit-breaker imposes on the latter .a prefixed and not adjustable direction along which it must be moved for achieving an in-service-position.
  • the circuit breaker must be mounted within the switchgear necessarily in such a way that it results horizontally slidable between an extraction position and the in-service-insertion position. Therefore, only one possible installing configuration of the circuit-breaker is possible inside the switchgear which depends from the spatial configuration of the stationary terminals and/or of the movable terminals.
  • a connecting device suitable for connecting a movable conducting terminal of a switching device to a stationary conducting terminal of a switchgear apparatus comprising:
  • plier assembly projecting from said support body parallel to a first axis and delimiting a coupling cavity for receiving said stationary conducting element, said coupling cavity extending along said first axis and along a second axis orthogonal to said first axis,
  • leading- surfaces configured for promoting a resilient deformation of said plier assembly upon a contacting-pushing-action of said stationary conducting terminal for enabling insertion of the latter into said coupling cavity
  • leading- surfaces comprises zones sloping along planes which are parallel to said second axis and tilted with respect to said first axis, and further zones sloping along further planes which are tilted with respect to said second. axis, so as to enable an insertion of said stationary conducting element into said coupling cavity along an insertion-direction which can be parallel or transversal to said first axis.
  • a connecting device which fits several different configurations of the circuit breaker and/or of the switchgear, thus drastically simplifying the overall production, assembly, and storage procedures of the circuit breakers and of the switchgears .
  • the present disclosure encompasses, also a switching device, in particular a circuit breaker comprising one or more connecting devices as defined in the related appended claims and described herein, and also an electric switchgear, equivalently called with the term panel or cabinet or switchboard, including such a circuit breaker.
  • Figure 1 is . a perspective view of a connecting device according to the present disclosure
  • FIG 2 is a front view of the connecting device shown in Figure 1
  • Figure 3 is a lateral view of the connecting device shown in - Figure 2 ;
  • Figure 4 is a top view of the connecting device shown in Figure 3 ; -
  • Figure 5 is an exploded view of the connecting device
  • Figure 6 and 7 shows two different possible operative configurations of the connecting device according to the present disclosure
  • Figure 8 show three connecting devices of the present disclosure which are mounted on a movable circuit breaker and which operate according to the operative configuration schematically shown in Figure 7.
  • a connecting device 1 is shown, which is particularly suitable to be used in the Medium Voltage field, where, for the purposes of the present application, the term medium voltage refers to applications in the range from lkV up to some tens of kV, e.g. 52 kV.
  • the connecting device 1 is suitable for being fixed to a conducting terminal 2 of a switching device, such as a circuit breaker 3, in particular a draw-out circuit breaker 3 housed in a switchgear apparatus.
  • Such a circuit breaker 3 is of the type which is supported by a trolley that can move from an extraction position with respect to a switchgear, in which the movable conducting terminal is disengaged from the stationary conducting terminal, to an insertion position in the switchgear, in which the movable conducting terminal engages with the stationary conducting terminal.
  • a connecting device 1 which is fixed to a movable conducting terminal 2 mounted on the circuit breaker 3, and which engages with a stationary conducting terminal 4 of a busbar of the switchgear, where the stationary conducting terminal 4 generally has a rectangular cross-section.
  • the connecting device 1 can also be assembled on a stationary conducting terminal of the switchgear in order to receive and engage with a movable terminal.
  • the connecting device 1 comprises a support body 5 suitable for being fastened to the movable conducting terminal 2, and a plier assembly 6 which projects from such a support body 5 parallel to a first axis 7.
  • the support body 5 having a plate-shape, comprises a fixing surface 12 intended to be stationarily applied to the movable conducting terminal 2.
  • a parallelepiped- supporting-portion 13 ( Figure 5) is obtained on the support body 5, longitudinally extending in a direction transversal, in particular orthogonal to the first axis 7.
  • the plier assembly comprises a pair of mutually spaced plier units 6 which extend from respective opposite sides, in particular the largest sides, of the parallelepiped-shaped- portion 13.
  • the two plier units 6 extend parallel to one other and parallel to the first axis 7, so as to delimit a coupling cavity 8 suitable for internally receiving a portion of the stationary conducting element 4 in order to establish an electrical connection.
  • the coupling cavity 8 extends with a first dimension along the first axis 7 and with a second dimension along a second axis 9 orthogonal to the first axis 7 (shown in Figures 1 to 4) .
  • Each plier unit 6 comprises a contacts-cluster-element 14, of a copper material, which includes a plurality of mutually adjacent and parallel contact-finger-portions 15 each extending with a finger-axis parallel to the above-mentioned first axis 7 and being suitable for going into contact with the stationary conducting terminal 4.
  • the plier units 6 further comprise insertion-contact-means 10, having leading- surfaces 11 configured for promoting a resilient deformation of the plier units 6 upon a contacting-pushing-action of the stationary conducting terminal 4. Such a resilient deformation enables the stationary conducting terminal 4 to be inserted into the coupling cavity 8 of the connecting device 1, as will be described in detail in the following.
  • the leading-surfaces 11 comprises zones 20 sloping along planes 21 which .
  • the insertion-contact-means comprise a plurality of bulge-portions 10, each bulge-portion 10 being provided on an end of a respective contact-finger- portion 15 and protruding into the coupling cavity 8.
  • Each bulge-portion 10 has a convex curved surface, in particular is configured as a dome-shaped-portion.
  • the bulge-portion 10, more particularly, is configured with a hemispherical shape, or as a part of a spherical surface.
  • the insertion-contact- means 10 in order to enable a relative engagement movement of the stationary-conducting-terminal 4 with the connecting device 1 along an insertion direction parallel to the first axis 7 or transversal to the first axis 7, in particular orthogonal to the first axis 7 (i.e. parallel to the second axis 9) .
  • Each plier unit 6 includes a spring-comb-element 16 configured for elastically urging the contacts-cluster- element 14 against a contact-surface 30 of the stationary conducting terminal 4.
  • the spring-comb-elements 16 are made of a spring steel material, and is designed with suitable dimension and stiffness parameters in such a way to also ensure a good contact for allowing transfer of electrical current between the movable and stationary conductors.
  • Each spring-comb-element 16 includes a plurality of prong- portions 17 each coupled with a respective contact-finger- portion 15.
  • Each prong-portion 17 comprises a bent-end 18 shaped for exerting an elastic-pushing action inside a respective recess 19 obtained on the respective contact- finger-portion 15 at an opposite side with respect to the associated bulge-portion 10.
  • Each contacts-cluster-element 14 is pressed against the parallelepid-shaped portion 13 of the support body 5 by the respective spring-comb-element 16.
  • fastening threading elements 31 and spacing elements 32 which mutually connect the two plier units 6 and keep the latter spaced and pressed against the parallelepid-shaped portion 13.
  • the contacts-cluster-elements 15 comprise a curved edge- portions 33 having convex surfaces for resting against resting-surfaces 34 of the parallelepid-shaped portion 13.
  • a C-shaped-bracket-element 24 is provided for securing the pliers units 6 to the support body 5.
  • the C-shaped-bracket- element 24 is coupled to the parallelepid-shaped portion 13 through a screw element 25 and a spacer washer 26, which enable a pivotal movement around a rotation axis 35, shown in Figure 5, which is parallel to the above mentioned second axis 9.
  • the curved edge-portions 33 enable a rotation of the pliers units 6 on a plane orthogonal to such a rotation axis 35.
  • the connecting device 1 is highly versatile and makes possible to freely choose amongst more possible installing configurations for a given circuit breaker.
  • a circuit breaker can be mounted for sliding along a horizontal direction 40 whatever the spatial orientation of the movable conducting terminals 2 is.
  • the circuit breaker 3 can slide along the horizontal direction 40 whether the stationary conducting terminal 4 and the movable conducting terminal 2 are horizontally arranged or vertically arranged, as shown in Figure 6 and 7 respectively.
  • FIG. 7 The operative configuration of Figure 7 is also schematically shown in Figure 8 where three connecting devices 1 for the three poles of a switchgear are visible.
  • the relative approaching movement between the circuit breaker 3 and the stationary conducting terminals 4 occurs along the horizontal direction 40 which is parallel to the first axis 7, whereas in the operative configuration of Figure 7, the horizontal direction 40 is orthogonal to the first axis 7 of the connecting device 1.
  • the bulge-portions 10 upon a pushing contact action received from the stationary conducting terminal 4, enable a resilient spreading movement of the finger portions 15, thus allowing the stationary conducting terminal 4 to enter the coupling cavity 8 of the connecting device 1.
  • the stationary conducting terminal 4 is able to enter the coupling cavity 8 whatever its angular position with respect to the connecting device 1 is.
  • the connecting device 1 it is possible to adapt a given circuit breaker to a plurality of possible mounting configurations within a switchgear apparatus, differently from the pliers device of the prior art which allowed a connection to a busbar in only one direction.
  • a general simplification of the production, assembly, and storage procedures of the circuit breakers and of the switchgears is obtained, with respect to the prior art where for each circuit breaker typology several dedicated components are required to allow a correct insertion of the circuit breaker in the switchgear.
  • the present connecting device 1 advantageously, is a common device usable for many different configurations of circuit breakers/switchgears .
  • the connecting device 1 is susceptible of modifications or variations all within the scope of the inventive concept as defined by the appended claims; any details may be replaced with technically equivalent elements.
  • One or more of the elements above described may be differently shaped and/or positioned, can be realized in one or more pieces and/or can be differently coupled or positioned, etcetera.
  • the materials may be any according to the requirements and the state of the art.

Landscapes

  • Trip Switchboards (AREA)

Abstract

L'invention concerne un dispositif de connexion approprié pour connecter un terminal conducteur mobile d'un dispositif de commutation à un terminal conducteur fixe d'un appareil de commutation, comprenant : - un corps de support approprié pour être fixé au terminal conducteur mobile ; - un ensemble pinces en saillie du corps de support parallèlement à un premier axe et délimitant une cavité de couplage destinée à recevoir l'élément conducteur fixe, la cavité de couplage s'étendant le long du premier axe et le long d'un second axe orthogonal au premier axe, - un moyen de contact par insertion ayant des surfaces avant conçues pour permettre une déformation élastique de l'ensemble pinces lors d'une action de poussée par contact du terminal conducteur fixe pour permettre son insertion dans la cavité de couplage, les surfaces avant comprenant des zones en pente le long de plans qui sont parallèles au second axe et inclinés par rapport au premier axe, et d'autres zones en pente le long d'autres plans qui sont inclinés par rapport au second axe, de manière à permettre une insertion de l'élément conducteur fixe dans la cavité de couplage le long d'une direction d'insertion qui peut être parallèle ou transversale au premier axe.
PCT/EP2013/064114 2012-07-23 2013-07-04 Dispositif de connexion WO2014016095A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12177501.9 2012-07-23
EP12177501.9A EP2690637A1 (fr) 2012-07-23 2012-07-23 Dispositif de connexion

Publications (1)

Publication Number Publication Date
WO2014016095A1 true WO2014016095A1 (fr) 2014-01-30

Family

ID=48741190

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/064114 WO2014016095A1 (fr) 2012-07-23 2013-07-04 Dispositif de connexion

Country Status (2)

Country Link
EP (1) EP2690637A1 (fr)
WO (1) WO2014016095A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3249671B1 (fr) * 2016-05-23 2020-03-04 LSIS Co., Ltd. Disjoncteur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112635211B (zh) * 2020-12-18 2023-11-03 双城市机电技术开发有限公司 一种大电流动触头结构
EP4024424A1 (fr) 2020-12-29 2022-07-06 Schneider Electric USA, Inc. Sous-ensemble de groupe de doigts en une seule pièce
EP4404393A1 (fr) * 2023-01-19 2024-07-24 ABB Schweiz AG Dispositif de raccordement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1665986A1 (de) * 1967-07-07 1971-04-15 Siemens Ag Kontaktanordnung mit einem Messerkontaktstueck und einer Aufnahmevorrichtung
DD133875A1 (de) * 1977-10-28 1979-01-24 Gerd Woldmann Kontaktanordnung fuer regeleinrichtungen von transformatoren
DE69510154T2 (de) * 1994-10-17 1999-12-16 Gec Alsthom T Et D S.A., Paris Elektrische Kontaktklammer und Klemmvorrichtung mit einem solchen Klemmstück
US8197289B1 (en) * 2011-01-25 2012-06-12 Schneider Electric USA, Inc. Self-locking power connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1665986A1 (de) * 1967-07-07 1971-04-15 Siemens Ag Kontaktanordnung mit einem Messerkontaktstueck und einer Aufnahmevorrichtung
DD133875A1 (de) * 1977-10-28 1979-01-24 Gerd Woldmann Kontaktanordnung fuer regeleinrichtungen von transformatoren
DE69510154T2 (de) * 1994-10-17 1999-12-16 Gec Alsthom T Et D S.A., Paris Elektrische Kontaktklammer und Klemmvorrichtung mit einem solchen Klemmstück
US8197289B1 (en) * 2011-01-25 2012-06-12 Schneider Electric USA, Inc. Self-locking power connector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3249671B1 (fr) * 2016-05-23 2020-03-04 LSIS Co., Ltd. Disjoncteur

Also Published As

Publication number Publication date
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