EP0053524A1 - Elektrischer Schalter mit Selbstblasung durch Lichtbogenrotation - Google Patents

Elektrischer Schalter mit Selbstblasung durch Lichtbogenrotation Download PDF

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Publication number
EP0053524A1
EP0053524A1 EP81401549A EP81401549A EP0053524A1 EP 0053524 A1 EP0053524 A1 EP 0053524A1 EP 81401549 A EP81401549 A EP 81401549A EP 81401549 A EP81401549 A EP 81401549A EP 0053524 A1 EP0053524 A1 EP 0053524A1
Authority
EP
European Patent Office
Prior art keywords
contacts
shunt
contact
main
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.)
Granted
Application number
EP81401549A
Other languages
English (en)
French (fr)
Other versions
EP0053524B1 (de
Inventor
Olivier Bouilliez
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
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0053524A1 publication Critical patent/EP0053524A1/de
Application granted granted Critical
Publication of EP0053524B1 publication Critical patent/EP0053524B1/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
    • H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • 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

Definitions

  • European patent application 11 • 11,542 describes an electrical circuit breaker of the type mentioned in which the main circuit is arranged in a quasi-independent manner from the auxiliary breaking circuit inside the sealed enclosure. This particular arrangement allows a significant simplification of a pneumatically self-blowing circuit breaker of the type commercially known as FLUARC, and it has proved advantageous to use this technique in rotary arc circuit breakers.
  • Rotary arc circuit breakers use a blowing coil inserted in the auxiliary circuit and the increase in the reactance of the auxiliary circuit prevents rapid switching of the current on this auxiliary circuit.
  • the object of the present invention is to remedy this drawback and to allow the production of an electric circuit breaker with rotating arc equipped with independent main contacts. pendants of a particularly simple structure.
  • the circuit breaker according to the invention is characterized in that said arcing contacts are arranged in the form of opposite annular tracks, said coil being attached to the rear face of one of said tracks and electrically connected in arcing contacts , so as to generate a radial magnetic field in the separation interval of said annular tracks during a switching of the arc on the arcing contacts and in that it comprises a pair of shunt contacts arranged in a circuit shunt adjacent to said main contacts, said shunt contacts being arranged to separate after said main contacts to avoid any switching arc on the main contacts and said movable shunt contact flapping in the vicinity of said arcing contacts, so as to transfer the arc drawn on the separate shunt contacts on said arcing contacts.
  • a shunt circuit allows opening of the circuit breaker in three distinct phases, in this case a first phase of separation of the main contacts with switching of the current on the shunt circuit, a second phase of separation of the shunt contacts with formation of a switching arc and a third phase of transfer of the arc to the arcing contacts with switching on of the blow-off coil imposing a rapid rotation of the arc on the arcing contacts in the form of tracks annular.
  • the movable shunt contact ensures the transfer of the arc to fixed arcing contacts arranged at an optimal extinction distance from the arc.
  • the movable shunt contact is arranged as a pivoting knife mounted for rotation on the same axis as the knife forming the movable main contact.
  • Advance separation of the main contacts is advantageously carried out by a particular conformation of the shunt contacts, so as to allow a mechanical connection of the main mobile and shunt contacts.
  • the arcing contacts are arranged tangentially to the displacement path of the movable shunt contact, so as to pick up the arc and to switch on the blow-off coil immediately after the shunt contacts are separated.
  • the movable assembly formed by the main movable and shunt contacts carries a pallet which causes during its displacement during an opening of the circuit breaker a displacement of blowing gas facilitating the transfer of the of the shunt contacts to the arcing contacts.
  • Control of the circuit breaker is particularly simple and the mass of the moving element is low, which facilitates rapid separation of the contacts.
  • a pole of a self-blowing circuit breaker comprises a sealed casing 10 made of an insulating material filled with a gas with high dielectric strength, in particular sulfur hexafluoride, under an appropriate pressure.
  • Crossings 12, 14 shaped as supply terminals of current cross opposite bottoms 16, 18 of the envelope 10 and extend along a rectilinear trajectory.
  • the bushing 12 carries a main fixed contact 20 capable of cooperating with a movable main contact 22 in the form of a knife pivotally mounted on a fixed shaft 24 carried by an extension 26 of the bushing 14.
  • the movable main contact 22 is constituted by two knives 2?
  • a, 22b coming to grip in the closed position of the pads 20a, 20b, constituting the fixed main contact 20.
  • On the fixed axis 24 is mounted to rotate a movable shunting contact 28 constituted by a pair of knives 28a, coming to enclose in the closed position a fixed shunting contact 30 electrically and mechanically connected to the bushing 12 by a support 32.
  • the clamping force of the knives, 22a, 22b, 28a is increased by electrodynamic forces traversing the contacts in a manner well known to specialists.
  • the knives 22a, 22b, 28a are mechanically secured by an axis 40 passing through orifices provided in the knives, and on which the end of a control rod 42 is articulated.
  • the movable shunting contact 28 is interposed between the knives 22a , 22b of the mobile main contact 22, and it is clear that other operating arrangements can be used and that the main mobile contact or the mobile shunt contact can include a different number of knives, in particular a single knife.
  • the control rod 42 is articulated by its end opposite to the crank pin 44 of a crank 46 wedged on a control shaft 48 passing through the wall of the casing 10 and actuated by a control mechanism of any type well known to specialists.
  • the main movable contact 22 and the movable shunt contact 28 extend substantially in the rectilinear direction of the bushings 12, 14, ensuring a main circuit for practically rectilinear current passage of minimum length.
  • a rotation of the control shaft 48 is transmitted by the connecting rod 42 - crank 46 assembly to the movable assembly, constituted by the knives 22a, 22b, 28a, so as to pivot these knives on the articulation formed by the axis 24 to an open position, shown in Figure 4, substantially perpendicular to the initial closed position.
  • the knives 28a of the shunt contact 28 have a length greater than that of the knives 22a, 22b of the main contact 22, and the fixed shunt contact 30 offset in height in FIG. 2 relative to the main fixed contacts 22a, 22b, has a part 50 projecting towards the open position relative to the main fixed contacts 20a, 20b.
  • This projecting arrangement 50 of the fixed shunt contact 30 allows separation of the main contacts 22, 20 before the separation of the shunt contacts 28, 30 during an opening operation of the circuit breaker.
  • the delayed opening of the shunt contacts 28, 30 may of course result from a different conformation of the main contacts 20, 22 or from the movable shunt contact 28, or be produced by a particular arrangement of the control mechanism 46, 42.
  • the casing 10 also contains an auxiliary circuit 52, constituted by a fixed arcing contact 54, electrically and mechanically secured by a support 56 at the bushing 14, and a fixed assembly 58 secured by a conductive support 60 at the bushing 12
  • the fixed assembly 58 comprises an arcing contact 62 in the form of an annular track arranged opposite and with a fixed spacing from the fixed arcing contact 54, also shaped as an annular track.
  • Fixed set 58 further comprises a blowing coil 64, constituted by a stack of split discs attached to the rear face of the arcing contact 62.
  • the fixed assembly 58 may be of the type described in French patent application No. 79 22151, filed September 3, 1979, to which reference may be made for further information.
  • the coil 64 is connected in series with the arcing contacts 54, 62 in the auxiliary circuit 52.
  • the auxiliary circuit 52 is disposed laterally of the main circuit 20, 22, 26 at a sufficient distance for a free movement in direction of the auxiliary circuit 52 of the movable contacts 22, 28.
  • the arcing contact 62, associated with the coil 64, is arranged tangentially and at short interval 66, from the projecting part 50 of the fixed shunt contact 30.
  • the fixed arcing contact 54 is disposed in a similar manner tangentially to the circular path described by the end of the mobile shunt contact 28.
  • the main mobile contacts 22 and shunt 28 come into the withdrawal position of the arcing contact 54, so as to prevent any re-ignition of the arcing on the movable contacts 22, 28.
  • An insulating gap 68 separates the arcing contacts 54, 62 preventing any passage current in the auxiliary circuit 52 and therefore any supply of the coil 64 in the closed position of the circuit breaker, represented in FIG. 1.
  • the circuit breaker according to the invention operates as follows:
  • the root of the arc anchored on the protruding part 50 quickly switches by looping effect on the adjacent arc contact 62 switching on the blowing coil 64.
  • the root anchored on the mobile shunt contact 28 switches on the arcing contact 54 and the arc is blown in rotation on the annular contacts 54, 62 by the magnetic field generated by the coil 64 in a manner well known to specialists.
  • Interval 68 corresponds to the optimal arc extinction distance. It can be seen that the separation of the main contacts 20, 22, which provide the function of conduction of the permanent current, is always carried out without an arc, the switching arc being drawn between the shunt contacts 28, 30, which practically contribute not to the conduction of the permanent current.
  • the arcing contacts 54, 62 are fixed and have the sole function of extinguishing the arcing.
  • the assembly is particularly simple, and the mass of the mobile assembly constituted by the knives 22a, 22b, 28a is low.
  • the switching arc is subjected to a rotational blowing.
  • a plate 70 (fig.l) whose movement causes a displacement of the gas contained in the envelope 10 in direction of the arcing contacts 54, 62, causing an arc blowing and facilitating the switching of the arc from the shunt contacts 28, 30 to the arcing contacts 54, 62.
  • the presence of the blowing plate 70 slightly increases the control energy, but the latter remains relatively low compared to that required for the pneumatic self-blowing device by gas piston.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
EP81401549A 1980-11-17 1981-10-07 Elektrischer Schalter mit Selbstblasung durch Lichtbogenrotation Expired EP0053524B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8024397 1980-11-17
FR8024397A FR2494493A1 (fr) 1980-11-17 1980-11-17 Disjoncteur electrique a autosoufflage par rotation de l'arc

Publications (2)

Publication Number Publication Date
EP0053524A1 true EP0053524A1 (de) 1982-06-09
EP0053524B1 EP0053524B1 (de) 1985-01-02

Family

ID=9248054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401549A Expired EP0053524B1 (de) 1980-11-17 1981-10-07 Elektrischer Schalter mit Selbstblasung durch Lichtbogenrotation

Country Status (7)

Country Link
US (1) US4529853A (de)
EP (1) EP0053524B1 (de)
CA (1) CA1173088A (de)
CS (1) CS226039B2 (de)
DE (1) DE3168063D1 (de)
ES (1) ES506650A0 (de)
FR (1) FR2494493A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2531804A1 (fr) * 1982-08-10 1984-02-17 Merlin Gerin Interrupteur electrique a arc tournant
FR2554631A1 (fr) * 1983-11-07 1985-05-10 Merlin Gerin Interrupteur electrique a arc tournant
EP0240406A1 (de) * 1986-04-03 1987-10-07 Merlin Gerin Elektrischer autopneumatischer Druckgasschalter mit hoher dielektrischer Festigkeit
FR2631735A1 (fr) * 1988-05-17 1989-11-24 Merlin Gerin Dispositif de reglage d'un interrupteur electrique moyenne tension
EP0401131A1 (de) * 1989-05-31 1990-12-05 Merlin Gerin Elektrischer Schalter mit rotierendem Lichtbogen
EP0599742A1 (de) * 1992-11-26 1994-06-01 Schneider Electric Sa Öffnungs- und Schliessmechanismus für einen elektrischen Mittel- oder Hochspannungsschalter
FR2735277A1 (fr) * 1995-06-12 1996-12-13 Schneider Electric Sa Disjoncteur a moyenne tension et a isolement gazeux

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8518381D0 (en) * 1985-07-20 1985-08-29 Y S Securities Ltd Circuit interrupter
GB8607397D0 (en) * 1986-03-25 1986-04-30 Northern Eng Ind Arc interrupter
FI78195C (fi) * 1986-10-27 1989-06-12 Stroemberg Oy Ab Stroembrytare.
US5464956A (en) * 1994-04-08 1995-11-07 S&C Electric Company Rotating arc interrupter for loadbreak switch
JP2931862B2 (ja) * 1995-04-28 1999-08-09 株式会社戸上電機製作所 遮断器の消弧装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2227507A (en) * 1938-11-01 1941-01-07 Westinghouse Electric & Mfg Co Circuit interrupter
US3471666A (en) * 1967-04-18 1969-10-07 Gen Electric Axial blast interrupter with arc-rotating means
FR2339244A1 (fr) * 1976-01-26 1977-08-19 Merlin Gerin Dispositif d'extinction d'arc
EP0011972A2 (de) * 1978-11-28 1980-06-11 South Wales Switchgear Limited Elektrische Schaltanlage
EP0012048A1 (de) * 1978-11-10 1980-06-11 Merlin Gerin Schalter mit rotierendem Lichtbogen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US592497A (en) * 1897-10-26 Contact in shunt for circuit-breakers
US3032627A (en) * 1959-03-05 1962-05-01 System Analyzer Corp Electrical switch
US3211866A (en) * 1963-02-05 1965-10-12 Gen Electric Vacuum type electric circuit interrupter with plural parallel-connected contact points
US3390239A (en) * 1965-02-23 1968-06-25 Gen Electric Electric circuit breaker with voltage-controlling resistances and means for switching the resistances in synchronism
US3513275A (en) * 1966-04-14 1970-05-19 Westinghouse Electric Corp Circuit breaker with improved current path and contact means
FR1543338A (fr) * 1967-09-01 1968-10-25 Telemecanique Electrique Dispositif d'extinction d'arc
US3593227A (en) * 1968-02-28 1971-07-13 Gennady Fedosievich Mitskevich Automatic electrodynamic blowoff breaker with stationary contact form of two series wound u-shaped members
US3858015A (en) * 1972-09-15 1974-12-31 Gen Electric Electric circuit breaker of the gas blast type
US3780244A (en) * 1972-10-18 1973-12-18 Gen Electric Gas blast circuit breaker of the axial blast type
FR2441916A1 (fr) * 1978-11-14 1980-06-13 Merlin Gerin Disjoncteur electrique a autosoufflage equipe d'un dispositif a contacts principaux perfectionnes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2227507A (en) * 1938-11-01 1941-01-07 Westinghouse Electric & Mfg Co Circuit interrupter
US3471666A (en) * 1967-04-18 1969-10-07 Gen Electric Axial blast interrupter with arc-rotating means
FR2339244A1 (fr) * 1976-01-26 1977-08-19 Merlin Gerin Dispositif d'extinction d'arc
EP0012048A1 (de) * 1978-11-10 1980-06-11 Merlin Gerin Schalter mit rotierendem Lichtbogen
EP0011972A2 (de) * 1978-11-28 1980-06-11 South Wales Switchgear Limited Elektrische Schaltanlage

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2531804A1 (fr) * 1982-08-10 1984-02-17 Merlin Gerin Interrupteur electrique a arc tournant
EP0101371A1 (de) * 1982-08-10 1984-02-22 Merlin Gerin Elektrischer Schalter mit rotierendem Lichtbogen
US4532392A (en) * 1982-08-10 1985-07-30 Merlin Gerin Rotating arc electric circuit breaker
FR2554631A1 (fr) * 1983-11-07 1985-05-10 Merlin Gerin Interrupteur electrique a arc tournant
EP0146424A1 (de) * 1983-11-07 1985-06-26 Merlin Gerin Elektrischer Schalter mit rotierendem Lichtbogen
FR2596915A1 (fr) * 1986-04-03 1987-10-09 Merlin Gerin Disjoncteur electrique a autosoufflage ayant une tenue dielectrique elevee
EP0240406A1 (de) * 1986-04-03 1987-10-07 Merlin Gerin Elektrischer autopneumatischer Druckgasschalter mit hoher dielektrischer Festigkeit
FR2631735A1 (fr) * 1988-05-17 1989-11-24 Merlin Gerin Dispositif de reglage d'un interrupteur electrique moyenne tension
EP0401131A1 (de) * 1989-05-31 1990-12-05 Merlin Gerin Elektrischer Schalter mit rotierendem Lichtbogen
FR2647948A1 (fr) * 1989-05-31 1990-12-07 Merlin Gerin Interrupteur electrique a arc tournant
US5003138A (en) * 1989-05-31 1991-03-26 Merlin Gerin Rotating arc electrical switch
EP0599742A1 (de) * 1992-11-26 1994-06-01 Schneider Electric Sa Öffnungs- und Schliessmechanismus für einen elektrischen Mittel- oder Hochspannungsschalter
FR2735277A1 (fr) * 1995-06-12 1996-12-13 Schneider Electric Sa Disjoncteur a moyenne tension et a isolement gazeux
EP0749139A1 (de) * 1995-06-12 1996-12-18 Schneider Electric Sa Gasisolierter Mittelspannungslastschalter
CN1068963C (zh) * 1995-06-12 2001-07-25 施耐德电器工业公司 气体隔离中压电路断路器

Also Published As

Publication number Publication date
ES8207657A1 (es) 1982-10-01
FR2494493A1 (fr) 1982-05-21
EP0053524B1 (de) 1985-01-02
FR2494493B1 (de) 1983-08-26
CA1173088A (fr) 1984-08-21
ES506650A0 (es) 1982-10-01
CS226039B2 (en) 1984-03-19
US4529853A (en) 1985-07-16
DE3168063D1 (en) 1985-02-14

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