EP2648283A1 - Connecteur de pôles pour liaisons conductrices d'électricité de deux pôles de commutation l'un à côté de l'autre d'un commutateur basse tension multipolaire - Google Patents

Connecteur de pôles pour liaisons conductrices d'électricité de deux pôles de commutation l'un à côté de l'autre d'un commutateur basse tension multipolaire Download PDF

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Publication number
EP2648283A1
EP2648283A1 EP12163375.4A EP12163375A EP2648283A1 EP 2648283 A1 EP2648283 A1 EP 2648283A1 EP 12163375 A EP12163375 A EP 12163375A EP 2648283 A1 EP2648283 A1 EP 2648283A1
Authority
EP
European Patent Office
Prior art keywords
plate
pole connector
heat sink
connector according
electrically insulating
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Withdrawn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
EP12163375.4A
Other languages
German (de)
English (en)
Inventor
Harm de Roo
Siegfried Mayer
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.)
ABB Schweiz AG
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 EP12163375.4A priority Critical patent/EP2648283A1/fr
Publication of EP2648283A1 publication Critical patent/EP2648283A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2675—Electrical interconnections between two blocks, e.g. by means of busbars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H01H71/082—Connections between juxtaposed circuit breakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/52—Cooling of switch parts

Definitions

  • the present invention relates to a pole connector for electrically connecting two adjacent switch poles of a multi-pole low-voltage switch according to the preamble of claim 1.
  • a pole connector serves to bridge two adjacently arranged switch poles of a generally designed as a circuit breaker multi-pole low-voltage switch and generally includes a U-shaped current conductor, the legs of the U forming the two ends are each formed as a power connection.
  • such a pole connector can connect the two switch poles in series, so that a rated voltage that is twice as high as the low-voltage switch can be achieved.
  • the rated voltage can be multiplied according to the number of used switch poles compared to the low-voltage switch.
  • the pole connector can also switch the two switch poles in parallel.
  • the pole connector then also has a third power connection, which can be connected optionally to a power source or to a load.
  • the rated current can be multiplied according to the number of used switch poles compared to the low-voltage switch.
  • a pole connector of the type mentioned is described in EP 1 267 375 A1 ,
  • This pole connector serves for the parallel connection of the switch poles of a three-pole low-voltage switch and accordingly contains a comb-structure current conductor arrangement with four electrically connected electrical connections, of which three each with one of the three switch poles and a fourth electrically conductively connected to a power source or a consumer.
  • two adjacent switch poles are electrically conductively connected to one another by a current conductor of the current conductor arrangement of the pole connector having a U-shape.
  • This current conductor has two current terminals forming the legs of the U for connecting the two adjacent switch poles and a current-conducting plate bridging these two current terminals.
  • the invention has for its object to provide a pole connector of the type mentioned above, which is characterized by simple construction and small footprint and which allows the dissipation of heat loss from the switch with protection against contact, simple means ,
  • the pole connector according to the invention serves for the electrically conductive connection of two juxtaposed switch poles of a multi-pole low-voltage switch and contains at least one U-shaped current conductor.
  • the two legs of the U-forming ends of the conductor are each designed as a power connection and are bridged by a current-conducting plate.
  • a first metal heat sink is placed, which is thermally conductive and electrically insulating connected to the plate.
  • This pole connector is characterized by simple construction and small footprint and allows the dissipation of heat loss from the switch with simple and the contact protection of the Polverbinders ensuring means. It is thus an overheating of the switch, in particular its terminals, avoided.
  • the thermally conductive and electrically insulating connection of the plate and the first heat sink is designed as a thermally conductive and electrically insulating adhesive bond. Due to its physical properties, this adhesive bond not only fixes the first heat sink on the current-conducting plate, but at the same time electrically isolates the first heat sink from the current-conducting plate and also ensures good heat transfer from the plate to the first heat sink. Furthermore, as additional fasteners, such as screws or rivets, avoided and eliminates the otherwise required contact protection.
  • the adhesive bond comprises a film of a thermally conductive and electrically insulating material and two adhesive layers, one of which connects the plate with the film and the other the heat sink with the film.
  • the film may contain a thermally conductive and electrically insulating metal oxide, in particular aluminum oxide.
  • such an adhesive bond with a suitable choice of film thickness on a good dielectric strength, whereby an electrical flashover of the adjacent switch poles is prevented against each other.
  • a particularly effective cooling of the pole connector can be achieved in that on the second side of the plate, a second metal heat sink is seated, which is thermally conductive and electrically insulating connected to the plate.
  • the thermally conductive and electrically insulating connection of conductor and second heat sink may also be formed as an adhesive bond and may comprise a second film of a thermally conductive and electrically insulating material and two adhesive layers, one of which the plate with the second film and the other connects the second heat sink with the second film. Due to their physical properties, the two adhesive bonds fix the first and the second heat sink to the current-conducting plate.
  • the first and the second foil as well as the first and the second heat sink may project beyond the edge of the plate.
  • the conductor of a flat, U-shape having base body made of silver-plated copper may be formed.
  • a particularly effective protection against the generally unavoidable outgassing can be achieved with a plastic molding having a perpendicular to the base wall aligned, wherein the wall is supported on a portion of the edge of the plate and having two openings, through each one of two power connections is performed.
  • the plastic molded part can have two snap arms held on the wall, which extend in a mounting plane determined by the base body and engage behind the two heat sinks and the plate in the area of mounting plane.
  • At least two parallel to the mounting plane extending hold-down are integrated, one of which is located above or below the mounting plane and of which the first is supported on the first heat sink and the second on the second heat sink.
  • At least the first or the second heat sink may comprise perpendicular to the mounting plane and perpendicular to the wall, spaced by interstices of spaced cooling fins and at least the first or the second hold-down may have a perpendicular to the mounting plane and perpendicular to the wall-oriented holding plate in one of Interspaces protrudes and supported on a base of the heat sink holding the fins.
  • the defined by the adhesive bond tight fit of the at least one heat sink can be secured without additional space.
  • a thickening may be formed in the end remote from the wall of the holding plate.
  • FIGS. 1 to 3 like reference numbers refer to equivalent parts.
  • a pole connector for a built-in a low-voltage distribution multi-pole circuit breaker is shown.
  • This pole connector includes a conductor 10, according to Figure 3 is designed as a flat, U-shape-containing body made of silver-plated copper.
  • the two legs of the U are each formed as one of two power terminals 11, 12 of the Polverbinders.
  • a current-conducting plate 13 of the base body 10 bridges the two power connections 11, 12.
  • the main body determines a Assembly level E. This mounting level is off Figure 3 visible and coincides in this figure with the plane of the drawing.
  • heatsink 20 placed on the thermally conductive and electrically insulating with the plate 13 is connected.
  • the thermally conductive and electrically insulating connection of plate 13 and heat sink 20 is designed as an adhesive bond 30. It contains a film 31 made of a thermally conductive and electrically insulating material, in particular based on metal oxide, such as aluminum oxide, and two, the two sides of the film 31 covering, not designated adhesive layers of a temperature-resistant adhesive, such as based on acrylate or epoxy , One of the two adhesive layers connects the plate 13 with the film 31 and the other the heat sink 20 with the film 31st
  • the adhesive bond 50 also contains a film 51 made of a thermally conductive and electrically insulating material, and two adhesive layers comprising a temperature-resistant adhesive covering the two sides of the film 51.
  • One of the two adhesive layers connects the plate 13 with this film 51 and the other the heat sink 40 with the film 51.
  • the two sheets 31 and 51 and the two heat sinks 20 and 40 protrude over a located on the front side of the Polverbinders portion of the edge 14 of the plate 13.
  • the pole connector further includes a fixed to the base body 10, the securing of the position of the two heat sink 20, 40 serving on the base body molding 60 made of a temperature-resistant, electrically insulating plastic. From the Figures 1 and 2 it can be seen that the plastic molded part 60 has a perpendicular to the base body 10 oriented wall 61. The wall 61 is disposed on a portion of the housing between the two power terminals 11, 12 Edge 14 of the plate 13 is supported and includes two openings 62, 62 ', through which one of the two power connections 11, 12 is guided.
  • the plastic molded part 60 has two snap arms 63, 63 'held on the wall 61, which extend in the mounting plane E determined by the base body 10 and the two heat sinks 20, 40 with hooks 631 and the plate 13 in the region of the mounting plane with hooks 632 behind (in the FIGS. 1 and 3 indicated only for the Schnapparm 63).
  • extended hold-64 are integrated, two of which are arranged above the mounting plane and one is arranged below the mounting plane.
  • the two upper hold-down 64 are supported with biasing force on the heat sink 20, whereas the lower hold-down 64 with biasing force on the heat sink 40th
  • the two heat sinks 20 and 40 have perpendicular to the mounting plane E and perpendicular to the wall 61 aligned, held by gaps 22 and 42 from each other at a distance cooling fins 21 and 41, respectively.
  • the two upper hold-downs 64 are guided by the wall 61 in two of the intermediate spaces 22, whereas the lower hold-down 64 is guided in one of the intermediate spaces 42.
  • the hold-down 64 each have a perpendicular to the mounting plane E and perpendicular to the wall 61 aligned holding plate 641, which in the associated space 22, respectively. 42 protrudes and on a holding the cooling fins base 23, respectively. 43 of the associated heat sink 20 resp.40 is supported. In the end facing away from the wall 61 of the holding plate 641, a thickening 642 is formed.
  • the in the FIGS. 1 to 3 shown pole connector is used in a series connection of two adjacent switch poles of the circuit breaker.
  • An electrically conductive connection of these two switch poles is achieved by inserting the two power connections 11, 12 in two terminals, one of which is integrated in each one of the two switch poles. From the terminal of a first of the two switch poles an operating current of the circuit breaker is then guided via the main body 10 of the pole connector to the terminal of the second switch pole.
  • An unacceptably high Heating of the switch poles and the base plate 10 by electrical losses in the current path is achieved by the thermally conductive seated on the body heat sink 20 and 40.
  • the good dielectric properties of the adhesive bonds 30, 50 prevent undesirable flashover between the interconnected switch poles.
  • the switch poles can therefore be arranged closely adjacent. By large cross-sections and optimized volumes of the two heat sink 20, 40 can be prevented when carrying large operating currents overheating of the switch poles resp.der terminals.
  • the circuit breaker can be plugged into a socket when installed in the low-voltage distributor. Therefore, the length of the cooling fins 41 of the lower heat sink 40 is limited. To achieve a given cooling performance, then - as from the Figures 1 and 2 it can be seen - the cooling fins 21 of the upper heat sink 20 is formed extended.
  • the plastic molded part 60 comprises the base body 10 and the two heat sinks 20, 40 with a biasing force determined by the spring force of the two snap arms 63, 63 'and thus prevents the heat sinks 20, 40 from slipping on the sides even if the adhesive bonds 30, 50 are excessively sheared Base 10.
  • the holding plate 641 allows the transmission of a large biasing force from the wall 61 to the base 23, respectively. 43 of the heat sink 20, respectively. 40.
  • the heat sinks 20 and 40 therefore transmit a contact pressure on the adhesive bonds 30 and 50, thereby increasing their shear strength.
  • the thickening 642 increases the mechanical strength of the holding plate 641 and limits the lateral displacement of the holding plate in the intermediate space 22, respectively. 42nd
  • the seated on the edge 14 wall 61 shields the pole connector against hot gases that can escape when switching a short-circuit current from the switch poles. Since on the side facing away from the wall 61 front of the Polverbinders the two films 31 and 51 and the two heatsinks 20 and 40 protrude beyond the edge 14 of the plate 13, and since the thickness of the base body 10, respectively. the plate 13 is generally in the millimeter range, the front of the Polverbinders is also formed on the edge 14 protected from contact.
  • the pole connector according to the invention can also be used for the parallel connection of two or more switch poles of the low-voltage circuit breaker.
  • An embodiment of the pole connector which can be used for this purpose contains a current conductor section attached to the front edge 14, which can be connected to a load or a current source, depending on the arrangement of the pole connector.
  • the body In order to enable a parallel connection of at least three switch poles, the body then comb structure and then contains in addition to the attached to the edge of the plate conductor section and the two legs of the U forming power terminals 11, 12 at least one parallel to the power terminals 11, 12 aligned third electricity.

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  • Cooling Or The Like Of Electrical Apparatus (AREA)
EP12163375.4A 2012-04-05 2012-04-05 Connecteur de pôles pour liaisons conductrices d'électricité de deux pôles de commutation l'un à côté de l'autre d'un commutateur basse tension multipolaire Withdrawn EP2648283A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12163375.4A EP2648283A1 (fr) 2012-04-05 2012-04-05 Connecteur de pôles pour liaisons conductrices d'électricité de deux pôles de commutation l'un à côté de l'autre d'un commutateur basse tension multipolaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12163375.4A EP2648283A1 (fr) 2012-04-05 2012-04-05 Connecteur de pôles pour liaisons conductrices d'électricité de deux pôles de commutation l'un à côté de l'autre d'un commutateur basse tension multipolaire

Publications (1)

Publication Number Publication Date
EP2648283A1 true EP2648283A1 (fr) 2013-10-09

Family

ID=45937056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12163375.4A Withdrawn EP2648283A1 (fr) 2012-04-05 2012-04-05 Connecteur de pôles pour liaisons conductrices d'électricité de deux pôles de commutation l'un à côté de l'autre d'un commutateur basse tension multipolaire

Country Status (1)

Country Link
EP (1) EP2648283A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3158570A1 (fr) * 2014-06-18 2017-04-26 Eaton Corporation Appareil de commutation électrique, et cavalier et procédé associé

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1959962U (de) * 1967-01-24 1967-05-11 Elektrotechnische Fabrik Kuepp Schaltgeraetebank mit kontaktbruecken.
DE8813533U1 (de) * 1988-10-28 1988-12-15 Asea Brown Boveri AG, 6800 Mannheim Isoliertes Stromschienenpaket
EP1267375A1 (fr) 2001-06-15 2002-12-18 Eaton Corporation Disjoncteur multipolaire avec circuit de courant parallèle
EP1630916A1 (fr) * 2004-08-27 2006-03-01 Siemens Aktiengesellschaft Système d'alimentation pour interrupteur basse tension
EP2043412A1 (fr) * 2007-09-28 2009-04-01 catem DEVELEC GmbH & Co. KG Rails conducteurs dotés d'une dissipation de chaleur
EP2280460A1 (fr) * 2009-07-27 2011-02-02 ABB Research Ltd. Commutation de puissance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1959962U (de) * 1967-01-24 1967-05-11 Elektrotechnische Fabrik Kuepp Schaltgeraetebank mit kontaktbruecken.
DE8813533U1 (de) * 1988-10-28 1988-12-15 Asea Brown Boveri AG, 6800 Mannheim Isoliertes Stromschienenpaket
EP1267375A1 (fr) 2001-06-15 2002-12-18 Eaton Corporation Disjoncteur multipolaire avec circuit de courant parallèle
EP1630916A1 (fr) * 2004-08-27 2006-03-01 Siemens Aktiengesellschaft Système d'alimentation pour interrupteur basse tension
EP2043412A1 (fr) * 2007-09-28 2009-04-01 catem DEVELEC GmbH & Co. KG Rails conducteurs dotés d'une dissipation de chaleur
EP2280460A1 (fr) * 2009-07-27 2011-02-02 ABB Research Ltd. Commutation de puissance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3158570A1 (fr) * 2014-06-18 2017-04-26 Eaton Corporation Appareil de commutation électrique, et cavalier et procédé associé
EP3158570B1 (fr) * 2014-06-18 2021-06-02 Eaton Intelligent Power Limited Appareil de commutation électrique, et cavalier et procédé associé

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