EP0011542B2 - Leistungsschalter mit getrennten Leistungs- und Parallelstrombahnen - Google Patents

Leistungsschalter mit getrennten Leistungs- und Parallelstrombahnen Download PDF

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Publication number
EP0011542B2
EP0011542B2 EP79400819A EP79400819A EP0011542B2 EP 0011542 B2 EP0011542 B2 EP 0011542B2 EP 79400819 A EP79400819 A EP 79400819A EP 79400819 A EP79400819 A EP 79400819A EP 0011542 B2 EP0011542 B2 EP 0011542B2
Authority
EP
European Patent Office
Prior art keywords
main
contacts
circuit
arcing
circuit breaker
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
Application number
EP79400819A
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English (en)
French (fr)
Other versions
EP0011542B1 (de
EP0011542A1 (de
Inventor
Jean-Louis Mircovich
Marcel Macaire
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9214898&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0011542(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0011542A1 publication Critical patent/EP0011542A1/de
Publication of EP0011542B1 publication Critical patent/EP0011542B1/de
Application granted granted Critical
Publication of EP0011542B2 publication Critical patent/EP0011542B2/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • the invention relates to an electrical circuit breaker according to the preamble of claim 1.
  • a known circuit breaker of the kind mentioned (publication US-A-3 257 532) comprises arcing contacts and main contacts arranged coaxially, the main contacts surrounding circumferentially the arcing contacts.
  • the reactances of the two circuits are almost identical, which facilitates switching, but risks of interaction of the cuts are not excluded.
  • the moving part carries the two moving contacts and the inertia of the assembly opposes a quick command.
  • Document US-A-3,671,696 describes a circuit breaker having arcing contacts housed in a vacuum interrupter interposed between the inlet and outlet bushings.
  • a disconnector is connected in parallel with the vacuum interrupter and the assembly is arranged in a box filled with air.
  • the main circuit containing the disconnector is removed from the auxiliary circuit for the housing of the vacuum bulb and forms a reactance loop significantly greater than that of the loop of the auxiliary circuit, preventing rapid switching from the main circuit to the auxiliary circuit. , when opening the disconnector.
  • the main circuit is longer than the auxiliary circuit, which increases the resistance and overheating of the circuit breaker and affects the distribution of current between the two circuits.
  • the switch is placed in the air and the separation distance between the open contacts must be sufficient for the insulation. This results in a large opening stroke and a significant drive control energy.
  • the size of the cabinet is a multiple of that of the vacuum interrupter.
  • the object of the present invention is to enable the production of a self-blowing circuit breaker with a quasi-independent main and auxiliary circuit, in which the reactances of these circuits are substantially equal in order to facilitate rapid switching of the current.
  • circuit breaker according to the invention is characterized by the features mentioned in the characteristic part of claim 1.
  • the invention starts from the observation of the advantage of the separation of the functions of conduction of the permanent current and that of breaking of the current, in particular of fault.
  • the main circuit provides the first function and the length and section of the conductors, as well as the structure of the contacts are chosen for this purpose.
  • the second function is provided by the auxiliary circuit on which the current is switched when the main contacts are separated.
  • fig. 1 is a schematic view in elevation and in vertical section of a self-blowing circuit breaker equipped with a device with main contacts according to the invention
  • fig. 2 is a partial section along line II-II of FIG. 1, in the closed position of the main contacts.
  • a pole of the self-blowing circuit breaker comprises a sealed casing 10 filled with insulating gas with high dielectric strength, in particular sulfur hexafluoride.
  • the casing 10 made of molded insulating material, is closed by a cover 12 and serves as a housing for a main circuit 14 for passing the nominal current, an auxiliary circuit 16 for shunting the main circuit for breaking the arc, a mechanism control 18 of the movable assembly for the successive opening of the main 14 and auxiliary 16 circuits, and two terminals 20, 22 for supplying current constituted by crossings of the wall of the insulating casing 10 offset longitudinally.
  • the main circuit 14 comprises a movable main contact 24 provided with a plurality of pairs of fingers 26a, 26b, 26c, 26d ..., articulated on a fixed axis 28 integral with a first conductor 30 for connection with the lower terminal 22
  • An elastic means, in particular a compression spring 32 is associated with each pair to urge the corresponding fingers towards one another, so as to form a clamp cooperating in the closed position of the main circuit 14 with an extension 34, 36 a fixed main contact 38.
  • the latter is electrically connected to the upper terminal 20 by a second connecting conductor 40.
  • the tightening of the fingers 26a, 26b; 26c, 26d on the corresponding extension 34, 36 is reinforced by the electrodynamic attraction exerted between said fingers of each pair traversed by currents of the same direction.
  • the auxiliary circuit 16 connected in parallel to the main circuit 14 inside the casing 10, has aligned arcing contacts, one of which is fixed 42 is connected to the upper terminal 20, and the other of which is movable 44 is integral with a conductive rod 46 coupled to a control crank 48.
  • the external actuation mechanism transmits the movement to the crank 48 by means of a rotary transmission shaft 50 passing through the wall of the casing 10 with the interposition of a sealed bearing 52.
  • An electrical connection with relative movement, in particular a flexible shunt conductor 54 is arranged in the auxiliary circuit 16 between the rod 46 and the lower terminal 22.
  • An intermediate partition 56 parallel to the bottom 58 and to the cover 12 of the pole, shares the internal space of the envelope 10 in two compartments 60, 62 separate superimposed.
  • the lower compartment 60 contains the main contacts 24, 38, and the upper compartment 62 contains the cut-off interval 64 formed between the arcing contacts 42, 44 in the separate position.
  • the physical separation between the main contact interruption zone and the cut-off interval 64 avoids any risk of re-striking the arc in the vicinity of said zone as a result of polluted hot gases coming from the cut.
  • the current supply terminals 20, 22 form bypass nodes of the two main 14 and auxiliary 16 circuits, and the shunt conductor 54 is traversed exclusively by the fault current.
  • the two circuits 14, 16 extend parallel to the interior of the envelope 10 with a small transverse offset, so as to form a loop of low reactance, the circuit 14 following the shortest path.
  • the self-blowing device 66 of a type well known to specialists is arranged in the upper compartment 62 and comprises a movable piston 68 secured to the rod 46.
  • the piston 68 carries a blowing nozzle 70 coaxially surrounding the arcing contacts 42 , 44 in the closed position, and cooperates with limited sliding with a fixed cylinder 72 to delimit a pistonable volume 74 for compressing the insulating gas.
  • a flow of blowing gas is expelled through openings 76 provided in the piston 68 in the convergent of the nozzle 70, towards the cut-off interval 64 for the extinction of the arc.
  • the actuation mechanism comprises a kinematic link 78 mechanically connecting the rod 46 of the arcing contact 44 to the main movable contact 24 to transform the rectilinear movement of the rod 46 into a pivoting movement of the contact 24 during the stroke of the moving equipment of the circuit breaker.
  • This kinematic link 78 is provided with a transmission lever 80 secured to the fingers 26 and cooperating at its opposite end with a drive pin 82 attached to the rod 46.
  • the stroke of the clamps of the main movable contact 24 is different and in particular shorter than that of the movable arcing contact 44.
  • the actuation mechanism After detecting a fault current on the network to be protected, the actuation mechanism causes the downward axial translation (in the direction of the arrow F) of the rod 46 and the pivoting of the lever 80 clockwise causing the opening of the main contacts 24, 38, and the switching of the current in the auxiliary shunt circuit 16.
  • the fault current path is then as follows: upper terminal 20, fixed arcing contact 42, movable arcing contact 44, rod 46, shunt conductor 54, conductor 30, lower terminal 22.
  • the crew's continued race mobile causes the separation of the arcing contacts 42, 44 and the blowing of extinguishing gas from the arcing.
  • the cutting zone 64 is physically separated from the main contacts 38, 24, in particular by the partition 56 and prevents any re-ignition of the arc between said main contacts.
  • the arcing contacts 42, 44 can close first or, on the contrary, after the main contacts 24, 38 close, depending on the desired operating conditions.
  • the control device is of course arranged accordingly.
  • the main movable contact 24 could also be arranged in the form of a bridge actuated in radial or axial translation by the kinematic link 78 during the axial displacement of the rod 46.
  • the invention is applicable to a circuit breaker with pneumatic self-blowing, with magnetic self-blowing or with combined magnetic and pneumatic self-blowing.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Claims (6)

1. Elektrischer Selbstblas-Schalter mit einem laenglichen, dichten Gehaeuse (10), das mit einem Isoliergas von hoher dielektrischer Festigkeit gefuellt ist, insbesondere mit Schwefelhexafluorid, und mit :
a) einem Hauptstromkreis (14) fuer den Durchgang des Stromes mit einem Paar Hauptkontakte (24, 38), von denen einer (24) beweglich ist ;
b) einem den Hauptstromkreis (14) fuer die Stromunterbrechung umleitenden Hilfsstromkreis (16), der sich auf einer zum Hauptstromkreis parallel liegenden Bahn erstreckt, und der ein Paar Lichtbogenkontakte (42, 44) besitzt, von denen einer (44) beweglich ist, wobei sich diese Lichtbogenkontakte in demselben Gehaeuse und demselben Gas wie die Hauptkontakte (24, 38) befinden ;
c) einem Paar Durchfuehrungen (20, 22), die laengs einer Wand des Gehaeuses (10) verteilt sind und eine Ausgangsklemme und eine Eingangsklemme des Schalters bilden, mit denen der Hauptstromkreis sowie der Hilfsstromkreis verbunden sind ;
d) einem Steuermechanismus (46, 48, 50, 80), so ausgebildet, dass die Hauptkontakte (24, 38) vor den Lichtbogenkontakten (42, 44) getrennt werden, ;
gekennzeichnet durch folgende Kennzeichen :
e) der Hauptstromkreis(i4) befindet sich auf einer ersten Bahn, die zwischen der Seite des Gehaeuses (10), wo sich die Klemmen befinden, und der Bahn des Hilfsstromkreises angeordnet ist, wobei diese erste Bahn leicht seitlich versetzt ist zur Bahn des Hilfsstromkreises und kuerzer als diese ist ;
f) die Hauptkontakte (24, 38) weisen einen beweglichen, schwenkbaren Kontakt (38) auf, der in der geschlossenen Lage im Hauptstromkreis (14) ausgerichtet ist ;
g) eins der Enden des beweglichen Hauptkontaktes (38) arbeitet unmittelbar mit einer der genannten Durchfuehrungen (20, 22) zusammen ;
h) die Schwenkbewegung wird von dem Gleiten einer Steuerstange (46) des beweglichen Lichtbogenkontaktes (44) des Hilfsstromkreises abgeleitet.
2. Schalter gemaess Anspruch 1, dadurch gekennzeichnet, dass die Trennungszone der genannten Hauptkontakte (24, 38) im Innern des Gehaeuses (10) von der Trennungszone der Lichtbogenkontakte (42, 44) entfernt ist mit Einfuegung einer internen Trennwand (56), um eine Wechselwirkung der Haupt- und Hilfsunterbrechungen zu vermeiden.
3. Schalter gemaess irgendeinem der vorhergehenden Ansprueche, gekennzeichnet durch eine kinematische Kette (82,80), welche die genannten beweglichen Kontakte (24, 44) verbindet, um die genannten Hauptkontakte (24, 38) vor den Lichtbogenkontakten (42, 44) zu trennen, wobei der Oeffnungsweg der Hauptkontakte (24, 38) kleiner ist, als jener der Lichtbogenkontakte (42, 44).
4. Schalter gemaess irgendeinem der vorhergehenden Ansprueche, gekennzeichnet durch eine pneumatische Blaskolben- (68) und Zylinder- (72) Anordnung, die mit den genannten Lichtbogenkontakten (42, 44) verbunden ist, um durch die Bewegung des beweglichen Lichtbogenkontaktes (44) betaetigt zu werden und ein Loeschen des durch die Trennung der Lichtbogenkontakte (42, 44) hervorgerufenen Lichtbogens zu verursachen.
5. Schalter gemaess irgendeinem der vorhergehenden Ansprueche, gekennzeichnet durch ein magnetisches Mittel, das ein magnetisches Feld zum Loeschen des zwischen den Lichtbogenkontakten (42, 44) hervorgerufenen Lichtbogens erzeugt.
6. Schalter gemaess der Ansprueche 4 und 5, dadurch gekennzeichnet, dass er gleichzeitig ein magnetisches Mittel zum Loeschen des Lichtbogens und ein pneumatisches Mittel zum Loeschen des Lichtbogens aufweist.
EP79400819A 1978-11-14 1979-11-05 Leistungsschalter mit getrennten Leistungs- und Parallelstrombahnen Expired EP0011542B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7832214A FR2441916A1 (fr) 1978-11-14 1978-11-14 Disjoncteur electrique a autosoufflage equipe d'un dispositif a contacts principaux perfectionnes
FR7832214 1978-11-14

Publications (3)

Publication Number Publication Date
EP0011542A1 EP0011542A1 (de) 1980-05-28
EP0011542B1 EP0011542B1 (de) 1983-07-20
EP0011542B2 true EP0011542B2 (de) 1988-02-10

Family

ID=9214898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400819A Expired EP0011542B2 (de) 1978-11-14 1979-11-05 Leistungsschalter mit getrennten Leistungs- und Parallelstrombahnen

Country Status (6)

Country Link
US (1) US4309581A (de)
EP (1) EP0011542B2 (de)
JP (1) JPS5568021A (de)
CS (1) CS231167B2 (de)
DE (1) DE2965950D1 (de)
FR (1) FR2441916A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494493A1 (fr) * 1980-11-17 1982-05-21 Merlin Gerin Disjoncteur electrique a autosoufflage par rotation de l'arc
DE3513264A1 (de) * 1985-03-12 1986-09-18 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
FR2596576B1 (fr) * 1986-03-26 1988-05-27 Merlin Gerin Disjoncteur electrique a autosoufflage a tenue dielectrique amelioree
FR2596915B1 (fr) * 1986-04-03 1994-02-18 Merlin Et Gerin Disjoncteur electrique a autosoufflage ayant une tenue dielectrique elevee
US5059753A (en) * 1987-11-06 1991-10-22 Cooper Industries, Inc. SF6 puffer recloser
FR2631735B1 (fr) * 1988-05-17 1990-07-27 Merlin Gerin Dispositif de reglage d'un interrupteur electrique moyenne tension
FR2641898B1 (fr) * 1989-01-17 1991-03-15 Merlin Gerin Disjoncteur electrique a autosoufflage
FR2647254B1 (fr) * 1989-05-19 1991-07-05 Alsthom Gec Disjoncteur a moyenne tension a courant nominal eleve
FR2660792B1 (fr) * 1990-04-04 1992-06-12 Alsthom Gec Disjoncteur a haute ou moyenne tension a contacts d'arc en bout.
FR2677168B1 (fr) * 1991-06-03 1994-06-17 Merlin Gerin Disjoncteur moyenne tension a energie de commande reduite.
FR2735277B1 (fr) * 1995-06-12 1997-07-18 Schneider Electric Sa Disjoncteur a moyenne tension et a isolement gazeux
DE19613568A1 (de) * 1996-04-04 1997-10-09 Asea Brown Boveri Leistungsschalter
US8040664B2 (en) * 2008-05-30 2011-10-18 Itron, Inc. Meter with integrated high current switch
US8890711B2 (en) 2009-09-30 2014-11-18 Itron, Inc. Safety utility reconnect
CA2716046C (en) 2009-09-30 2016-11-08 Itron, Inc. Gas shut-off valve with feedback
WO2011041260A1 (en) * 2009-09-30 2011-04-07 Itron, Inc. Utility remote disconnect from a meter reading system
US9005423B2 (en) 2012-12-04 2015-04-14 Itron, Inc. Pipeline communications
CN109087828B (zh) * 2018-08-09 2024-05-07 西安中熔电气股份有限公司 一种新型带激励切断功能的接触器结构

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
DE488803C (de) * 1927-07-12 1930-01-08 Siemens Schuckertwerke Akt Ges Hochstromoelschalter mit Mehrfachunterbrechung und getrennter Anordnung von Haupt- und Abreissschaltstuecken in besonderen OElgefaessen
FR1302499A (fr) * 1961-06-29 1962-08-31 Comp Generale Electricite Interrupteur électrique comportant un dispositif de coupure à autosoufflage dans un gaz halogéné
AT236502B (de) * 1962-12-17 1964-10-26 Sprecher & Schuh Ag Druckgasschalter mit durch die Schaltbewegung erzeugter Löschmittelströmung
DE1490475B2 (de) * 1963-10-11 1970-06-25 Siemens AG, 1000 Berlin u. 8000 München: Druckgas schalter
DE1540361A1 (de) * 1965-02-03 1970-01-02
GB1126362A (en) * 1965-07-06 1968-09-05 Ass Elect Ind Improvements in and relating to electric circuit breakers
FR1458334A (fr) * 1965-08-18 1966-03-04 Comp Generale Electricite Dispositif de coupure pour courants de forte intensité
CH444260A (de) * 1966-02-15 1967-09-30 Bernardovich Irany Pavel Olarmer Hochspannungsschalter
US3671696A (en) * 1970-11-16 1972-06-20 Allis Chalmers Mfg Co Vacuum interrupter shunted with mechanical switch
JPS50158883A (de) * 1974-06-13 1975-12-23
FR2285700A1 (fr) * 1974-09-19 1976-04-16 Alsthom Cgee Dispositif de coupure
JPS52102575A (en) * 1976-02-25 1977-08-27 Hitachi Ltd Buffer gas breaker with resistive contact

Also Published As

Publication number Publication date
DE2965950D1 (en) 1983-08-25
FR2441916A1 (fr) 1980-06-13
EP0011542B1 (de) 1983-07-20
EP0011542A1 (de) 1980-05-28
FR2441916B1 (de) 1981-10-02
JPH0139171B2 (de) 1989-08-18
CS231167B2 (en) 1984-10-15
CS761579A2 (en) 1984-02-13
US4309581A (en) 1982-01-05
JPS5568021A (en) 1980-05-22

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