EP1450440A1 - Elektrische Verbindungseinrichtung insbesondere zwischen einem Schuttschalter und einem Differentialmodul - Google Patents

Elektrische Verbindungseinrichtung insbesondere zwischen einem Schuttschalter und einem Differentialmodul Download PDF

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Publication number
EP1450440A1
EP1450440A1 EP04360014A EP04360014A EP1450440A1 EP 1450440 A1 EP1450440 A1 EP 1450440A1 EP 04360014 A EP04360014 A EP 04360014A EP 04360014 A EP04360014 A EP 04360014A EP 1450440 A1 EP1450440 A1 EP 1450440A1
Authority
EP
European Patent Office
Prior art keywords
rigid
circuit breaker
connection means
terminals
means according
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Withdrawn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
EP04360014A
Other languages
English (en)
French (fr)
Inventor
Phanuel Krencker
Stéphane Haessler
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.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
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 Hager Electro SAS filed Critical Hager Electro SAS
Publication of EP1450440A1 publication Critical patent/EP1450440A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/26—End pieces terminating in a screw clamp, screw or nut
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/023—Soldered or welded connections between cables or wires and terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34—Conductive members located under head of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • 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
    • H01R9/2425—Structural association with built-in components
    • H01R9/2441—Structural association with built-in components with built-in overvoltage protection
    • 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
    • H01R9/2458—Electrical interconnections between terminal blocks
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H01H71/0271—Mounting several complete assembled circuit breakers together
    • 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
    • H01H71/1009—Interconnected mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
    • H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer

Definitions

  • the present invention relates to the field of apparatus electrical safety devices fitted to the power protection means, particularly at the head of the line through circuit breaker assemblies and differential unit, and relates to a means of electrical connection between the circuit breaker and differential block.
  • the circuit breaker and differential block assemblies are generally intended to ensure the safety of the electrical circuits of power, i.e. head protection or divisional protection.
  • the circuit breaker and the differential unit are arranged side by side and are electrically connected to each other by through rigid or flexible insulated conductors.
  • the thermal power thus generated by the Joule effect in the different elements of the circuit can be detrimental to a good circuit breaker operation, in particular by causing a premature onset or overheating resulting in destruction of envelopes.
  • connection means have different disadvantages.
  • Rigid connection which takes place via bars of angled connection of section adapted to the maximum section of the terminal corresponding connection, frequently causes difficulties block coupling on the circuit breaker due to the impossibility of introducing the end of the connection perfectly coaxially in the terminal, consequently inducing a risk of damage to the circuit breaker at level of the terminals or the differential block at the level of the connections.
  • the quality of the electrical contacts is uncertain, because it cannot be done in a way ideal on one side, but potentially only on an edge or point, with the corollary of poor conduction of heat flow.
  • the flexible connection is generally carried out by means of cables, which certainly help to avoid the problems inherent in rigid connections, cited above, but which, for a copper section equivalent, have a significantly larger apparent section. he as a result, the manufacture of the differential unit with such cables is difficult for reasons of space.
  • the object of the present invention is to overcome these drawbacks by providing a means of electrical connection between a circuit breaker and a block differential ensuring optimum electrical and thermal contact between circuit breaker contact terminals and block connections differential.
  • the electrical connection means which is presented in the form of a rigid or flexible insulated element, is characterized in that the connected end of this connection means is rigid, its section corresponds to the optimal cross-section of the circuit breaker terminals and its length is such that in the mounting position of said end in the equipment corresponding, this optimal section extends outside the terminals.
  • Figure 1 of the accompanying drawings shows a set circuit breaker 1 and differential unit 2, which are intended to ensure the safety of electrical power circuits which are arranged in a contiguous manner laterally and electrically connected to each other through rigid or flexible isolated connection means 3.
  • the isolated connection means 3 are flexible.
  • each means 3 of electrical connection which is in the form of a rigid insulated element or flexible, is characterized in that the connected end 4 of this means of connection 3 is rigid, its section corresponds to the optimal section of circuit breaker terminals and its length is such that in mounting position in the corresponding devices, this optimal section is extended to outside the terminals, thus remedying the thermal confinement of these last.
  • the rigid end 4 may have a larger useful section than that of the means of connection 3 to which it is connected.
  • connection means 3 it is possible to carry out a optimal transfer of the heat flux generated in circuit breaker 1 outside this last to connection means 3.
  • connection means 3 electric is in the form of a flexible element constituted by a cable surrounded an insulating sheath 6 and provided with a rigid end 4.
  • the rigid end 4 is has the form of a tubular element crimped on the end of the cable and has a section corresponding to that of the terminals fitted to the circuit breaker 1.
  • the length of the rigid elements 4 is advantageously greater than the insertion length of these elements 4 in the circuit breaker 1.
  • each rigid element 4 exceeds by a certain part of its length outside the terminals of circuit breaker 1, so that part of the conductor extends outside the circuit breaker and promotes the extraction of heat flow by conduction, thus remedying the thermal confinement of the connection.
  • connection means 3 allows to guarantee a maximum contact surface between the rigid ends 4 and the terminals of circuit breaker 1, while leaving a freedom of twisting of said connection means 3 allowing the end 4 to move into position optimally.
  • Figure 10 of the accompanying drawings shows a variant of embodiment of the invention of the connection means 3, in which the end rigid 4 is in the form of a machined solid part provided, on the one hand, with a housing for receiving and crimping one end of the cable and the other part, on the side opposite to this housing, a polygonal end piece of section corresponding to that of the connection terminals of circuit breaker 1.
  • connection means 3 are in the form of bent rigid elements and whose ends 4 'of connection with the terminals of circuit breaker 1 have a cross-section substantially equivalent to the internal section of said terminals and a length greater than the penetration length in these terminals, in order to present a protruding part beyond the contours of the circuit breaker 1.
  • the connection means 3 are welded by their end corresponding to the terminals of the differential block 2, with possibility slight pivoting of the latter relative to the housing, then tightened by their other end in the corresponding terminals of circuit breaker 1. This pivoting absorbs the inclination required for coupling mechanical of the differential unit on the circuit breaker (figure 3), then fold down to ensure the electrical connection (figure 2).
  • connection means 3 is in the form of a single rigid piece angled provided with a rigid end 4 'intended to cooperate with a corresponding terminal of circuit breaker 1 and at its other end of an element contact 10 ( Figure 5) cooperating with the differential block 2.
  • the rigid connection means 3 is advantageously provided, at the level maintaining it in the body of the differential unit 2, a device for guiding and holding in the form of a flange 11 and a biased portion 12 asymmetrical cooperating respectively with housings correspondents 11 'and 12' provided in the body of the differential unit 2 (figures 2 and 3), to allow a slight rotation necessary for the release of connections for mechanical coupling of the differential unit 2 on the circuit breaker 1.
  • the housing 11 'of the flange 11 has a planar section substantially in the shape of a rectangular trapezoid, the small side has a length substantially equal to the thickness of the flange 11 and the length of the long side of which is such that it allows pivoting angular in a plane parallel to that of the bottom of the differential block 2.
  • connection means 3 are held firmly in the differential block 2 housing while being able to undergo pivoting compared to the latter allowing to promote the engagement of their rigid end 4 'in the terminals of the circuit breaker 1.
  • the rigid ends 4 ′ may have a cross section substantially equal to that of said terminals, so that after tightening they can allow optimal heat flux transmission.
  • connection means 3 under form of a single rigid bent piece, is provided with a rigid end 4 "slightly deformable under pressure.
  • This rigid end 4" can be in the form of a slightly convex welded conductive sheath on the end of the connection means 3 and being able to be crushed between said end and terminal when tightening in circuit breaker 1.
  • the rigid end 4 can have a section substantially equal to that of the corresponding clamping terminal of the circuit breaker 1 and, when tightening the screw, this 4 "end deforms under pressure and is applied intimately against the terminal.
  • Figure 7 of the accompanying drawings shows another variant of embodiment of the invention, in which the connection means 3, under in the form of bent rigid parts, each provided for connection to the circuit breaker 1, with a rigid end 15 in the form of a welded strip, this strip having a section corresponding to that of the terminals of connection of said circuit breaker 1.
  • the forecast of a strip 15 as rigid end allows a good adaptation of the connection end in the terminals of the circuit breaker 1, because such a strip 15 authorizes a slight deformation of said end without corresponding modification of its section, so that the transmission of heat flux is improved by compared to the totally rigid solution.
  • FIG. 8 represents another alternative embodiment of the invention, in which the connection means 3 is essentially constituted by a bent rigid end piece 13 and by a flexible element 14, such that a sheathed cable, connected by one of its ends to the bent rigid end piece 13, at the output of the differential block 2 and which can be fitted to its other end of a rigid end 4, 4 'or 4 "or in the form of a strip 15 crimped or welded on said end.
  • This latter embodiment presents the advantage of obtaining switchgear inputs and outputs by through rigid elements of optimal cross-section, the connection between these elements being carried out by means of flexible means favoring adaptability during assembly.
  • the rigid end 4, 4 'or 4 "or in the form of a strip 15 of the connection means 3 can also be provided with a drilling or tapping 16.
  • Such drilling or tapping 16 makes it possible to perfect the fixing of the connection means 3, in particular in the terminals of circuit breaker 1, for example by using bolts or screws tightening passing totally or partially through said terminals and tending to firmly apply said rigid ends against said terminals, possibly with the use of additional washers.
  • the invention it is possible to provide means for connection between electrical equipment, which is necessary ensure optimal evacuation of the heat flow from at least one of them, especially for the connection between a circuit breaker and a block differential, providing a significant improvement in evacuation heat flow, ensuring perfect contact between the terminals of output of the circuit breaker and said connection means.
  • the heat flow generated in the circuit breaker is evacuated optimally by conduction at the output terminals, so that the temperature rise of the circuit breaker can be limited to an acceptable extent, i.e. by avoiding malfunction, or even destruction of the latter.

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EP04360014A 2003-02-21 2004-02-18 Elektrische Verbindungseinrichtung insbesondere zwischen einem Schuttschalter und einem Differentialmodul Withdrawn EP1450440A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0302192 2003-02-21
FR0302192A FR2851695B1 (fr) 2003-02-21 2003-02-21 Moyen de connexion electrique, notamment entre un disjoncteur et un bloc differentiel

Publications (1)

Publication Number Publication Date
EP1450440A1 true EP1450440A1 (de) 2004-08-25

Family

ID=32732047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04360014A Withdrawn EP1450440A1 (de) 2003-02-21 2004-02-18 Elektrische Verbindungseinrichtung insbesondere zwischen einem Schuttschalter und einem Differentialmodul

Country Status (2)

Country Link
EP (1) EP1450440A1 (de)
FR (1) FR2851695B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2918210A1 (fr) * 2007-06-27 2009-01-02 Fuji Elec Fa Components & Sys Disjoncteur de circuit de fuite a la terre.
FR2938129A1 (fr) * 2008-11-06 2010-05-07 Schneider Electric Ind Sas Tableau electrique.
CN103198939A (zh) * 2013-03-29 2013-07-10 魏保玉 一种防爆开关接线柱

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404369A (en) * 1966-09-01 1968-10-01 Gar Wood Ind Inc Welding cable and terminal assembly
DE2600795A1 (de) * 1976-01-10 1977-07-14 Bbc Brown Boveri & Cie Flexibler verbinder fuer installationsgeraete
US4394533A (en) * 1980-06-25 1983-07-19 Mitsuo Naito Air-cooled cables with terminals and method of producing same
US4467161A (en) * 1982-11-10 1984-08-21 G & W Electric Company Switch apparatus
EP0375568A1 (de) * 1988-12-14 1990-06-27 Merlin Gerin Modulare Zusammenbauvorrichtung für einen mehrpoligen Differentialschutzschalter
EP0643444A1 (de) * 1993-09-09 1995-03-15 Société d'Exploitation des Procédés Maréchal (SEPM), société anonyme Elektrischer Kontakt mit elastischer Rückstellung
DE29515561U1 (de) * 1995-04-20 1996-02-01 Conrad, Gerd, 33104 Paderborn Stromschiene und Querverbinder für eine Reihenklemme
EP0926695A1 (de) * 1997-12-18 1999-06-30 Schneider Electric Sa Elektrische Anschlussvorrichtung eines Differentialmoduls an einem Schutzschalter oder dergleichen und ein mit dieser Vorrichtung ausgerüsteter Differentialmodul
EP1065749A1 (de) * 1999-07-02 2001-01-03 Legrand Verbindungszusatzgerät für elektrische Apparate, ins besondere für modulare elektrische Apparate

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404369A (en) * 1966-09-01 1968-10-01 Gar Wood Ind Inc Welding cable and terminal assembly
DE2600795A1 (de) * 1976-01-10 1977-07-14 Bbc Brown Boveri & Cie Flexibler verbinder fuer installationsgeraete
US4394533A (en) * 1980-06-25 1983-07-19 Mitsuo Naito Air-cooled cables with terminals and method of producing same
US4467161A (en) * 1982-11-10 1984-08-21 G & W Electric Company Switch apparatus
EP0375568A1 (de) * 1988-12-14 1990-06-27 Merlin Gerin Modulare Zusammenbauvorrichtung für einen mehrpoligen Differentialschutzschalter
EP0643444A1 (de) * 1993-09-09 1995-03-15 Société d'Exploitation des Procédés Maréchal (SEPM), société anonyme Elektrischer Kontakt mit elastischer Rückstellung
DE29515561U1 (de) * 1995-04-20 1996-02-01 Conrad, Gerd, 33104 Paderborn Stromschiene und Querverbinder für eine Reihenklemme
EP0926695A1 (de) * 1997-12-18 1999-06-30 Schneider Electric Sa Elektrische Anschlussvorrichtung eines Differentialmoduls an einem Schutzschalter oder dergleichen und ein mit dieser Vorrichtung ausgerüsteter Differentialmodul
EP1065749A1 (de) * 1999-07-02 2001-01-03 Legrand Verbindungszusatzgerät für elektrische Apparate, ins besondere für modulare elektrische Apparate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2918210A1 (fr) * 2007-06-27 2009-01-02 Fuji Elec Fa Components & Sys Disjoncteur de circuit de fuite a la terre.
FR2938129A1 (fr) * 2008-11-06 2010-05-07 Schneider Electric Ind Sas Tableau electrique.
CN103198939A (zh) * 2013-03-29 2013-07-10 魏保玉 一种防爆开关接线柱

Also Published As

Publication number Publication date
FR2851695A1 (fr) 2004-08-27
FR2851695B1 (fr) 2006-04-28

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