EP2248141A2 - Zweikontakt-kontaktor und bogenausblaskamin - Google Patents

Zweikontakt-kontaktor und bogenausblaskamin

Info

Publication number
EP2248141A2
EP2248141A2 EP09705044A EP09705044A EP2248141A2 EP 2248141 A2 EP2248141 A2 EP 2248141A2 EP 09705044 A EP09705044 A EP 09705044A EP 09705044 A EP09705044 A EP 09705044A EP 2248141 A2 EP2248141 A2 EP 2248141A2
Authority
EP
European Patent Office
Prior art keywords
contacts
fixed
movable
chimney
contactor
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.)
Granted
Application number
EP09705044A
Other languages
English (en)
French (fr)
Other versions
EP2248141B1 (de
Inventor
Nicolas Quentin
Jean-Pierre Vernier
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.)
Alstom Transport Technologies SAS
Original Assignee
Alstom Transport SA
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 Alstom Transport SA filed Critical Alstom Transport SA
Publication of EP2248141A2 publication Critical patent/EP2248141A2/de
Application granted granted Critical
Publication of EP2248141B1 publication Critical patent/EP2248141B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/346—Details concerning the arc formation chamber

Definitions

  • Double contact contactor and arc extinction chimney Double contact contactor and arc extinction chimney.
  • the present invention relates to a contactor, of the type comprising:
  • an insulating body comprising:
  • the contactor comprising at least one moving element movable relative to the first and second fixed contacts and having first and second movable contacts adapted to be brought into selective contact respectively with the first fixed contact and the second fixed contact.
  • Contactors are used for isolation and reconfiguration of high voltage power networks for train power. These contactors are used in particular to supply or set a reference potential successive sections of power rails, so that the rail sections are powered only when they are covered by the tramway to prevent passersby do not can be electrocuted.
  • a number of contactors are known, such as those described in documents FR 2 287 765 and FR 2 308 188.
  • the contactor comprises at least two fixed contacts and two movable contacts carried by a moving element movable between the first and second fixed contacts
  • the pairs of electrical contacts are isolated in chambers which are as far apart as possible, in particular by distributing the pairs of contacts in two directions perpendicular to each other.
  • the object of the invention is to allow a better extinction of the arc in a contactor with a plurality of movable contacts.
  • the invention relates to a contactor of the aforementioned type, characterized in that the body is provided with an arc extinction chimney common to the first and second pairs of fixed and movable contacts, the first and second fixed contacts and the first and second movable contacts being arranged in the same room facing the base of the common chimney.
  • the contactor comprises one or more of the following characteristics:
  • the mobile element comprises a third and a fourth movable contact able to be brought into selective contact with the third and fourth fixed contacts respectively, the first and the third movable contacts are electrically connected.
  • the body is provided with a second arc quenching chimney common to the third and fourth pairs of fixed contacts and mobile, the third and fourth fixed contacts and the third and fourth movable contacts being arranged in the same room facing the base of the second common chimney.
  • the first and second movable contacts are electrically connected to one another.
  • the chimney has arc cutting plates arranged transversely along the axis of the chimney.
  • the mobile assembly is movable in translation and the chimney extends transversely to the axis of translation displacement of the moving assembly.
  • FIG. 1 is a schematic longitudinal sectional view of a contactor according to the invention, the contactor being at rest;
  • FIG. 2 is a view identical to that of Figure 1, the switch being in an activated state;
  • FIGS. 3 and 4 are views of a detail of Figures 1 and 2 illustrating the propagation and extinction of an arc formed between the contacts when switching the contactor to its state of Figures 1 and 2 respectively.
  • the contactor 10 illustrated in Figure 1 comprises, in a housing 11, a connection module 12 and an actuator 14 adapted to control the switching of the connection module 12 from a first state to a second state.
  • connection module 12 comprises first and second input terminals 16, 18 adapted to be connected to unrepresented electrical cables. Each terminal is secured to a first and a second fixed contact 20, 22 respectively.
  • output terminals 24, 26 disposed symmetrically at the input terminals 16, 18 with respect to the X-X axis of symmetry of the contactor.
  • the two terminals 24, 26 comprise third and fourth fixed contacts 28, 30 respectively. These contacts are symmetrical with the first and second contacts 20 and 22 respectively with respect to the X-X axis.
  • the contacts 20, 28 and 22, 30 are coplanar.
  • a moving assembly 32 is slidably movable along the axis X-X between the fixed contacts 20, 28 on the one hand and 22, on the other hand under the control of the actuator 14.
  • the moving element 32 comprises an insulating body 34 carrying a conductive plate 36 mounted to slide relative to the body 34.
  • the body 34 comprises a main rod 38 extending along the X-X axis and slidably mounted along this axis.
  • the rod 34 has a transverse abutment surface 40 adapted to limit the displacement of the plate 36 to the terminals 18 and 26 integral with the housing and to ensure a displacement of the plate 36 to the contacts fixed 20, 28 when the mobile equipment redeploys these same contacts.
  • the rod 38 comprises a collar 42 for supporting a helical spring 44 interposed between the flange 42 and the plate 36.
  • the spring 44 is able to elastically bias the plate 36 against the abutment 40.
  • the plate 36 comprises a conductive bar 46 extending transversely to the rod 38.
  • the bar has a median bore through which the rod 38 is threaded so that the bar slides along the rod 38 between the two stops 42 and 40 while being retained by the jurisdiction 44.
  • the Bar 46 is movable between the planes respectively defined by the first and third fixed contacts 20, 28 and the second and fourth fixed contacts 22, 30.
  • the plate 36 has at the ends of the bar 46 first, second, third and fourth movable contacts respectively noted 50, 52 and 58, 60.
  • the movable contacts 50, 52, 58, 60 are electrically connected to the conductive bar 46 and are able to bear on the fixed facing contacts 20, 22, 28 and 30 and thus provide an electrical connection between them.
  • the actuator 14 comprises an electromagnet 62 comprising a coil 64 surrounded by a carcass 66 both fixedly held in the housing 11 of the contactor.
  • the winding and the carcass are centered along the X-X axis.
  • the electromagnet 62 comprises a magnetic core 68 slidably mounted along the X-X axis inside the carcass 66 and the coil 64.
  • the core 68 is integral with a shaft 70 axially connected to the rod 38 of the moving assembly 32.
  • a return spring 72 is disposed between the moving assembly and the casing 66 to urge the moving assembly 32 away of the actuator, that is to say in a position in which the conductive plate 36 is in contact with the first and third fixed contacts. More specifically, the spring 72 is held compressed between the carcass 66 and a flange 73 forming a stop formed on the rod 38.
  • the coil 64 is connected by a control circuit to a suitable voltage source 74 via a switch 76.
  • the first and second pairs of movable and fixed contacts facing each other on the same side of the bar 46 are contained in the same chamber open towards the outside by a chimney 80 common to the two pairs of contacts. .
  • a chimney 80 common to the two pairs of contacts.
  • Each chimney originates at a pair of movable and fixed contacts.
  • Each chimney extends generally radially with respect to the direction XX. It has plates 82 of fragmentation of an electric arc extending substantially parallel to each other being directed along the axis of the chimney.
  • the contactor operates as follows.
  • the switch 76 is open so that the electromagnet does not act on the moving assembly 32.
  • the spring 72 keeps the moving equipment so that the abutment 40 is in abutment against the plate 36, itself bearing against the output terminal 24 and the input terminal 16. the terminals 18 and 26. In this position, the spring 44 is compressed. A connection between the first and third terminals 16, 24 is then ensured. Indeed, under these conditions, a first contact bridge is established between the first and third movable contacts 50, 58 which are themselves applied against the first and third fixed contacts 20, 28.
  • the switch 76 When the switch 76 is closed, and as illustrated in Figure 2, the core 68 is biased inside the windings so as to compress the spring 72. The moving element is then moved to the electromagnet and the platen 36 is pressed against the second and fourth fixed contacts 22, 30, the abutment 40 has been erased, advancing so that the plate 36 is no longer in abutment against the stop 40. In this position, the plate 36 is maintained in place by the spring 44 compressed between the plate 36 and the collar 42. In this case, the plate 36 forms a second contact bridge between the second and fourth movable contacts 52, 60 themselves applied against the second and fourth fixed contacts 22, 30.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP09705044.7A 2008-01-24 2009-01-23 Zweikontakt-kontaktor und bogenausblaskamin Not-in-force EP2248141B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0850443A FR2926921B1 (fr) 2008-01-24 2008-01-24 Contacteur a double contact et cheminee d'extinction d'arc
PCT/FR2009/050103 WO2009095598A2 (fr) 2008-01-24 2009-01-23 Contacteur à double contact et cheminée d'extinction d'arc

Publications (2)

Publication Number Publication Date
EP2248141A2 true EP2248141A2 (de) 2010-11-10
EP2248141B1 EP2248141B1 (de) 2015-06-17

Family

ID=39791108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09705044.7A Not-in-force EP2248141B1 (de) 2008-01-24 2009-01-23 Zweikontakt-kontaktor und bogenausblaskamin

Country Status (4)

Country Link
EP (1) EP2248141B1 (de)
BR (1) BRPI0906368B1 (de)
FR (1) FR2926921B1 (de)
WO (1) WO2009095598A2 (de)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2149365A1 (de) * 1970-10-14 1972-04-20 Int Standard Electric Corp Schalter in Baukastenweise
JP3411206B2 (ja) * 1997-12-26 2003-05-26 三菱電機株式会社 接点開閉機器の消弧装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009095598A3 *

Also Published As

Publication number Publication date
FR2926921B1 (fr) 2010-04-02
BRPI0906368B1 (pt) 2018-10-16
EP2248141B1 (de) 2015-06-17
WO2009095598A3 (fr) 2009-11-05
BRPI0906368A2 (pt) 2015-07-07
FR2926921A1 (fr) 2009-07-31
WO2009095598A2 (fr) 2009-08-06

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