EP0617449B1 - Schaltgerät - Google Patents

Schaltgerät Download PDF

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Publication number
EP0617449B1
EP0617449B1 EP94400614A EP94400614A EP0617449B1 EP 0617449 B1 EP0617449 B1 EP 0617449B1 EP 94400614 A EP94400614 A EP 94400614A EP 94400614 A EP94400614 A EP 94400614A EP 0617449 B1 EP0617449 B1 EP 0617449B1
Authority
EP
European Patent Office
Prior art keywords
fact
electromagnet
link
contact
moving parts
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.)
Expired - Lifetime
Application number
EP94400614A
Other languages
English (en)
French (fr)
Other versions
EP0617449A1 (de
Inventor
Gilles Baurand
Pierre Duchemin
Dominique Leglaye
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.)
Schneider Electric SE
Original Assignee
Schneider Electric SE
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
Priority claimed from FR9303562A external-priority patent/FR2703185B1/fr
Priority claimed from FR9311481A external-priority patent/FR2710453B1/fr
Application filed by Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0617449A1 publication Critical patent/EP0617449A1/de
Application granted granted Critical
Publication of EP0617449B1 publication Critical patent/EP0617449B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
    • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair
    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker

Definitions

  • the present invention relates to a switch device comprising a contact carrier equipped with a contact bridge cooperating with fixed contacts and capable of being actuated by an electromagnet or by a lock mechanism.
  • the power poles each include two fixed contacts connected to connection terminals and a bridge of movable contacts which forms a bridge between these fixed contacts, in the closed position.
  • Each contact bridge is mounted on a contact carrier.
  • the contactors breakers provide the functions of a circuit breaker, a contactor and a thermal protection relay using the same power poles.
  • Each contact bridge can be actuated by an electromagnet (contactor function), by a striker (protection against short-circuits), by a thermal and / or magnetic protection module (protection function against overloads, phase imbalances and overcurrents) acting on the lock.
  • each power pole is housed in an insulating cartridge ensuring the insulation between poles and forming the breaking chamber.
  • Each contact carrier is subjected to a compression spring which tends to close the contacts. To open the contacts, the electromagnet must counteract the force of the compression spring.
  • the present invention aims to provide a switching device in which the pole pressure springs acting on the movable contacts are embedded on the contact carrier. Due to the absence of the compression spring resting on the bottom of the cartridge, the devices can have high ratings and advantageous motorizations.
  • the cartridges can be replaced easily and without cables.
  • the cutting speed can be controlled.
  • the design of this device can be adapted to different versions: contactors, contactors-circuit breakers, discontactors.
  • the apparatus is characterized in that pressure springs are mounted between the bridge of contacts and the contact carrier and that an actuating mechanism which can be operated independently either by the electromagnet or by the lock mechanism acts on a drive member of the contact carrier so as to allow operation as a contactor or circuit breaker independently.
  • the contact bridge is mounted in a cartridge forming an interrupting chamber, this cartridge having a crank driving the contact bridge which extends outside said cartridge and is connected by the actuation mechanism to the moving parts of the electromagnet.
  • the drive crank is mechanically connected to a toggle and the moving parts of the electromagnet act on the toggle axis.
  • the device illustrated by the drawings has several double-break power poles.
  • a single pole is shown in Figures 2, 3 and 9.
  • Each power pole comprises on the one hand a set of fixed contacts 13 and 14 which are connected to two connection terminals 16 and 18 respectively and on the other hand a movable contact bridge 11 provided with contact pads and cooperating with these contacts fixed 131 and 132 so as to establish or interrupt the flow of current between the terminals.
  • the cut is therefore double.
  • the two terminals are for example screw terminals making it possible to connect electrical conductors.
  • the contact bridge 11 is mounted on a contact carrier 12 which is made of insulating material and is guided in rotation about a pivot axis 15.
  • the middle part of the contact bridge 11 is housed in a housing of the contact carrier 12 so as to be able to pivot relative to this contact carrier, the relative pivoting movement being limited by stops.
  • Springs 19 are mounted between the contact bridge 11 and the contact carrier 12 so as to create contact pressure.
  • the pivoting contact carrier 12 is integral with a drive crank 17 rotated by the electromagnet 4 via a movement change mechanism 2.
  • each power pole is contained in an insulating cartridge 1 ensuring the isolation between poles and forming the breaking chamber.
  • the different cartridges 1 are stored and held, side by side, in a housing 3 in which is housed the electromagnet 4 for operating the contacts.
  • Each cartridge 1 has an outer casing 14 of molded plastic. It contains the contact bridge 11 and the contact carrier 12 which is guided so as to pivot around the pivot axis 15, between the open position of the contacts and the closed position of the contacts.
  • the contact carrier 12 crosses one side of the casing and it is integral with the drive crank 17.
  • the pivot axis 15 is located substantially at equal distance from the two movable contacts, the contact bridge 11 extending from on either side of this pivot axis.
  • the different cranks 17 extend in parallel and are pivotally actuated by the moving parts of the electromagnet.
  • the cartridges 1 contain deionization fins.
  • the housing allows the mounting of the contactor either on a rail thanks to a clearance provided with hooking means, or on a plate thanks to lateral flanges in which are provided fixing holes.
  • the electromagnet 4 which controls the movement of the mobile contacts consists of a fixed magnetic circuit 41, a mobile magnetic circuit 42 capable of being moved in translation (straight line) and a coil 43.
  • the coil 43 is provided supply terminals which are accessible outside the housing.
  • a return spring 44 associated with the electromagnet tends to return the mobile magnetic circuit 42 to the open position of the contacts.
  • each drive crank 17 of a rotary pole contact carrier is connected to a fixed point 221 by a toggle consisting of two links 21 and 22 hinged to one another around an axis of articulation 23.
  • the link 22 is articulated on the fixed point 221, while the link 21 is coupled to the drive crank 17 by a removable articulated connection around an axis 171.
  • the axis 23 of the toggle joint is linked to the moving parts of the electromagnet. The movement of the moving parts of the electromagnet rotates the cranks 17.
  • each drive crank 17 of a rotary pole contact carrier is connected by an articulation to a link 28 pivotally mounted around a fixed axis 281 and pivotally actuated by the movable parts of the electromagnet.
  • the articulation of the link 28 and the lever 17 takes place around an axis 171 and it can be dismantled.
  • the moving parts of the electromagnet are connected by an articulated link 23 to the pivoting link 28.
  • each drive crank 17 is connected by a removable articulated link 171 to a connecting rod 24 actuated by the moving parts of the electromagnet.
  • the articulated connection 171 between the crank 17 and the connecting billet 24 has cylindrical surfaces which resemble a hook and allow easy disassembly.
  • the hinged link between the rod 24 and the movable parts is of the ball joint type and is produced by a cage 29 joined by orthogonal articulation axes 27 and 45 respectively to the rod 24 and to the mobile magnetic circuit 12 of the electromagnet.
  • a spring acts on the rod 24 so as to apply the articulation surfaces of this rod against the conjugate articulation surfaces of the crank 17.
  • the excitation of the electromagnet coil determines the attraction of the mobile magnetic circuit downwards and therefore the translation of the connecting rod 24 and the rotation of the cranks 17.
  • the contacts of each bridge 11 come to bear against the fixed contacts connected to the connection terminals (figure 7).
  • the internal springs of the cartridges act so as to apply the movable contacts against the fixed contacts ( Figure 8).
  • the contactor-circuit breaker illustrated in Figure 9 has a lock 5 housed in the housing.
  • the drive crank 17 of each rotary contact carrier 12 of a pole is connected to the lock 5 by a toggle consisting of two links 21 and 22 articulated to each other around an axis of articulation 23
  • the link 22 is mechanically coupled to the lock 5, while the link 21 is coupled to the drive crank 17.
  • the drive crank 17 of the rotary contact carrier 12 is on the other hand mechanically connected to the mobile magnetic circuit 42 of the electromagnet.
  • the knee-joint articulation axis 23 is mechanically connected to the mobile magnetic circuit 42 of the electromagnet via an articulated and sliding connection 25 and a connecting rod 24.
  • This connecting rod 24 is connected on one side to the axis 23 by the articulated and sliding connection 25 and is connected on the other side to the movable frame 42. It is guided in translation.
  • the toggle link 21 is articulated at 26 to the crank 17.
  • the toggle link 22 is connected to the lock 5 which moves it.
  • the connection 26 between the link 26 and the crank 17 is removable.
  • the articulated and sliding connection 25 is constituted by a slide 25 formed in the connecting rod 24 and in which the axis 23 of knee pad.
  • This slide has an open shape so as to allow the release of the axis 23 and of the block carrying the lock 5 and the mechanism 2, during disassembly.
  • the articulated and sliding connection 25 is designed so as not to leave a degree of freedom to the axis 23 so as to allow operation in contactor while leaving a degree of freedom to this axis 23 so as to allow operation in circuit breaker .
  • the slide 25 will advantageously be open so as to allow the release of the axis 23 and, consequently, disassembly.
  • the contactor-circuit breaker of FIG. 9 comprises a magnetic and thermal protection module 6 provided, on each current path, with a magnetic device with instantaneous tripping intended to ensure protection against high overcurrents and, on each current path, a thermal device intended to provide protection against overloads and phase imbalance.
  • the protection module detects an overload or an overcurrent on a current path, it acts on the contact carrier via the lock 5.
  • All manual or trip operating orders pass through the lock 5 which acts mechanically on a contact which is connected in series with the coil 43 of the electromagnet.
  • the lock 5 can be actuated manually by a control button 51 or automatically by orders from the protection module 6.
  • the different states of the mechanism are materialized by the position of the control button 51.
  • the opening can occur either as in the previous case or on short circuit or overload.
  • the lock 5 is released ( Figure 12) and moves the entire toggle 21-22. The latter, by moving, rotates the contact carrier 11 and the poles open. From this position the coil ceases to be supplied and the electromagnet opens ( Figure 13).
  • the opening of the electromagnet does not influence the contacts because there is no longer a positive connection between the sliding connection 25 and the axis 23.
  • the links 21-22 constituting the toggle joint will have different relative positions, in the deployed position, according to the force and the speed of the contact desired, as a function of the speed of the electromagnet.
  • the connecting rod 21 and the lever 17 are uncoupled by tilting the connecting rod 21.
  • the block containing the lock 5 and the toggle joint 21-22 can then be released. It is then easy to change the cartridges 1.
  • the removable links between the levers 17 and the movement change mechanism allow the disassembly and replacement of the cartridges 1. Furthermore, the conductive sections housed in the cartridges can be separated from the conductive sections going to the terminals 16 and 18.
  • a thermal protection module is added to the contactor.
  • the cartridges 1 can be arranged at the rear of the device or at the front or on the side.
  • the lever arms can be adapted.

Landscapes

  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (13)

  1. Schaltgerät mit mindestens einem Leistungpol, bestehend aus einem Kontaktträger (12), der mit einer Kontaktbrücke (11) ausgerüstet ist, die mit festen Kontakten (13, 14) zusammenwirkt und von einem Elektromagneten (4) oder einem Schloßmechanismus (5) betätigt werden kann, dadurch gekennzeichnet, daß Druckfedern (19) zwischen der Kontaktbrücke (11) und dem Kontaktträger (12) montiert sind, und daß ein Betätigungsmechanismus (21, 22, 23, 24, 25), der entweder vom Elektromagneten (4) oder vom Schloßmechanismus (5) betätigt werden kann, auf ein Antriebsorgan (17) des Kontaktträgers wirkt und damit den unabhängigen Betrieb als Schütz oder als Überlastschalter ermöglicht.
  2. Gerät nach Anspruch 1, dadurch gekennzeichnet, daß die Kontaktbrücke (11) auf einem Einsatz (1) montiert ist und eine Abschaltkammer bildet.
  3. Gerät nach Anspruch 2, dadurch gekennzeichnet, daß jeder Einsatz (2) eine Antriebskurbel (17) der Kontaktbrücke aufweist, die sich außerhalb des Mantels des besagten Einsatzes erstreckt und über den Betätigungsmechanismus (2) an die mobilen Teile des Elektromagneten angeschlossen ist.
  4. Gerät nach Anspruch 3, dadurch gekennzeichnet, daß die Antriebskurbel (17) mechanisch mit einem Kniegelenk (21-22) verbunden ist, und daß die mobilen Teile (42) des Elektromagneten auf die Achse des Kniegelenks (23) wirken.
  5. Gerät nach Anspruch 4, dadurch gekennzeichnet, daß eine der Kniegelenk-Pleuelstangen (21-22) um einen Festpunkt (221) herum gelagert ist.
  6. Gerät nach Anspruch 1 oder 2 oder 3, dadurch gekennzeichnet, daß jede Antriebskurbel (17) eines rotativen Kontaktträgers über ein Gelenk mit einer drehbar um eine feste Achse (281) herum montierte Pleuelstange (28) verbunden ist, deren Drehung vom Elektromagneten gesteuert wird.
  7. Gerät nach Anspruch 1 oder 2 oder 3, dadurch gekennzeichnet, daß es eine Verbindungspleuelstange (24) aufweist, die über eine erste Gelenkverbindung (27, 45) mit den mobilen Teilen des Elektromagneten und über eine zweite Gelenkverbindung (171) mit der Antriebskurbel (17) eines jeden Einsatzes (1) verbunden ist.
  8. Gerät nach Anspruch 7, dadurch gekennzeichnet, daß die zweite Gelenkverbindung (171) demontierbarer Art ist.
  9. Gerät nach Anspruch 1, dadurch gekennzeichnet, daß es Mittel (21-22) umfaßt, um den Kontaktträger (11) und ein Schloß (5) mechanisch zu verkoppeln, und Mittel (24), um den besagten Kontaktträger (11) mechanisch und unabhängig an die mobilen Teile des Elektromagneten anzukoppeln.
  10. Gerät nach Anspruch 9, dadurch gekennzeichnet, daß der Kontaktträger (11) über ein Kniegelenk (21-22) mechanisch mit dem Schloß (5) verbunden ist, und daß die mobilen Teile des Elektromagneten auf die Kniegelenkachse (23) wirken, und zwar über eine gelenkige und gleitende Verbindung (25), die unabhängige Funktionen als Schütz oder Überlastschalter gestattet.
  11. Gerät nach Anspruch 10, dadurch gekennzeichnet, daß die gleitende Verbindung (25) aus einer in der Verbindungspleuelstange (24) vorgesehenen Gleitbahn (25) besteht, in der die Kniegelenkachse (23) gleitet.
  12. Gerät nach Anspruch 11, dadurch gekennzeichnet, daß die Gleitbahn (25) offen ist, um die Demontage zu ermöglichen.
  13. Gerät nach einem der vorstehend genannten Ansprüche, dadurch gekennzeichnet, daß es ein Schutzmodul (6) umfaßt.
EP94400614A 1993-03-25 1994-03-22 Schaltgerät Expired - Lifetime EP0617449B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9303562 1993-03-25
FR9303562A FR2703185B1 (fr) 1993-03-25 1993-03-25 Appareil interrupteur électromagnétique.
FR9311481A FR2710453B1 (fr) 1993-09-24 1993-09-24 Appareil contacteur-disjoncteur.
FR9311481 1993-09-24

Publications (2)

Publication Number Publication Date
EP0617449A1 EP0617449A1 (de) 1994-09-28
EP0617449B1 true EP0617449B1 (de) 1997-10-22

Family

ID=26230205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400614A Expired - Lifetime EP0617449B1 (de) 1993-03-25 1994-03-22 Schaltgerät

Country Status (5)

Country Link
US (1) US5534832A (de)
EP (1) EP0617449B1 (de)
JP (1) JPH07312133A (de)
CA (1) CA2119839A1 (de)
DE (1) DE69406334T2 (de)

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DE102014107265B4 (de) * 2014-05-22 2020-01-02 Eaton Intelligent Power Limited Schaltgerät
CN103996569A (zh) * 2014-06-06 2014-08-20 国家电网公司 一种直流接触器
JP5835510B1 (ja) * 2014-11-10 2015-12-24 オムロン株式会社 リレー
DK3206219T3 (da) * 2016-02-10 2019-08-12 Abb Spa Omskifterindretning til elektriske lavspændingsinstallationer
CN110148536A (zh) * 2019-05-24 2019-08-20 苏彬良 一种5g通信基站交流远供电源设备

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Also Published As

Publication number Publication date
JPH07312133A (ja) 1995-11-28
EP0617449A1 (de) 1994-09-28
US5534832A (en) 1996-07-09
DE69406334D1 (de) 1997-11-27
CA2119839A1 (fr) 1994-09-26
DE69406334T2 (de) 1998-02-26

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