EP0334181B1 - Hochspannungsschalter mit geringer Antriebsenergie - Google Patents

Hochspannungsschalter mit geringer Antriebsenergie Download PDF

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Publication number
EP0334181B1
EP0334181B1 EP89104558A EP89104558A EP0334181B1 EP 0334181 B1 EP0334181 B1 EP 0334181B1 EP 89104558 A EP89104558 A EP 89104558A EP 89104558 A EP89104558 A EP 89104558A EP 0334181 B1 EP0334181 B1 EP 0334181B1
Authority
EP
European Patent Office
Prior art keywords
tube
contact
circuit breaker
fixed
piston
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
EP89104558A
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English (en)
French (fr)
Other versions
EP0334181A1 (de
Inventor
Edmond Thuries
Denis Dufournet
Michel Perret
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 Holdings SA
Original Assignee
GEC Alsthom SA
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Filing date
Publication date
Application filed by GEC Alsthom SA filed Critical GEC Alsthom SA
Priority to AT89104558T priority Critical patent/ATE99829T1/de
Publication of EP0334181A1 publication Critical patent/EP0334181A1/de
Application granted granted Critical
Publication of EP0334181B1 publication Critical patent/EP0334181B1/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
    • 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
    • H01H33/7007—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein the flow is a function of the current being interrupted
    • 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
    • H01H33/901—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 making use of the energy of the arc or an auxiliary arc
    • H01H33/903—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 making use of the energy of the arc or an auxiliary arc and assisting the operating mechanism

Definitions

  • the present invention relates to a circuit breaker according to the preamble of claim 1.
  • Such a circuit breaker is known for example from document FR-A-2 610 763.
  • This document shows secondary contacts of a circuit breaker; one of these contacts is integral with the fixed assembly and the other is mounted on a pivot also integral with the fixed assembly.
  • the length of the arc cannot exceed a given length.
  • the object of the invention is to define a circuit breaker in which the length of the secondary arc is limited to a given length less than the maximum separation length of the arcing contacts, although one of the secondary contacts is integral with the fixed assembly and the other of the mobile assembly of the circuit breaker.
  • no arc between the secondary contacts begins to engage.
  • the structure of the circuit breaker of the invention is similar to that described in document FR-A-2 576 142; in particular the fixed and movable arcing contacts are coaxial tubes defining a blowing cylinder closed by a fixed piston at the end of which is a blowing nozzle.
  • the subject of the present invention is a high-voltage circuit breaker with pressurized dielectric gas, of the type comprising at least one breaking chamber comprising an insulating envelope filled with said gas inside which are placed a fixed assembly comprising a fixed main contact and a fixed arcing contact, a movable assembly comprising in particular a movable main contact and a movable arcing contact, the breaking chamber further comprising a blowing cylinder opening into a blowing nozzle, a fixed blowing piston and a pair of secondary contacts, characterized in that that said blowing cylinder is delimited by a first tube constituting the movable arcing contact, by a second tube constituting the movable main contact and by said fixed blowing piston, that said first tube and a third tube connected to the fixed assembly and concentric with said first tube define, on the other side of the fixed blow piston, a variable volume containing the secondary contacts, f closed on one side by a closing piston and on the other side by an annular end piston linked to said first tube and sliding
  • the second secondary contact is provided with a latching means cooperating with grooves made in said first tube to block said second secondary contact in said fixed positions, said movable assembly comprising a contact cooperating with a contact integral with the fixed assembly to put said second secondary contact to the potential of said first secondary contact during the phase of circuit breaker reset.
  • FIG. 1 shows a breaking chamber comprising an envelope 1, made of an insulating material such as ceramic, filled with a dielectric gas such as sulfur hexafluoride under a pressure of a few bars.
  • an assembly comprising a fixed main contact formed by contact fingers 2 protected by a corona hood 3 and an arcing contact formed by a metal tube 4 terminated by one end 4A alloy resistant to the effects of the arc.
  • the moving element comprises a metal tube 5 serving as a moving arcing contact, terminated by a tip 5A made of an alloy resistant to the effects of the arcing.
  • the tube 5 is driven by a metal tube 6, for example of aluminum, fixed to an operating rod, not shown. Tubes 5 and 6 are not attached to each other; on the contrary, a certain clearance between them is possible; the drive is done by two steps 5B and 6B of the tubes 5 and 6. The travel is limited by a stop 6C.
  • a metal tube 7, concentric with the tube 5, serves as a movable main contact.
  • blowing nozzle 8 made of insulating material. It is in electrical contact with a metal block 9, made of aluminum for example, secured to the fixed assembly, by contact fingers 10.
  • the tube 5 and the tube 7 are joined by an insulating ring 12, pierced with holes 12A.
  • the volume 20 delimited by the tubes 5 and 7 is closed by a fixed piston 14, made of an insulating material such as polytetrafluoroethylene, held in place by a metal tube 15 fixed to the block 9.
  • the volume delimited by the tubes 5 and 7, the ring 12 and the piston 14 is designated by 20. This volume constitutes the blow-out cylinder of the circuit breaker.
  • the piston 14 is pierced with orifices 16 and includes a valve 17 authorizing the passage of gas only from the outside to the inside of the volume 20.
  • the piston 14 comprises a seal 18 and a guide 19.
  • the orifices 16 of the piston 14 can be obstructed by an annular piston 22, which can slide in the annular space formed by the tube 5 and a cylindrical extension 23, pierced with holes 23A, of the piston 14.
  • the annular piston 22 is pushed against the orifices 16 by a spring 24 pressing against an integral part of the fixed tube 15.
  • the piston is sealed by seals 26 and 27.
  • the insulating block is guided in the annular space between the tubes 5 and 15 thanks to a portion 32A coming to bear against the tube 15.
  • This portion is provided with orifices 33 to allow the free passage of gas in the volume 35 comprised between the tube 15 and the parts 31, 32 and 42.
  • the insulating part 32 is provided with a latching system, for example with balls 36 and springs 37, cooperating with grooves 38 and 39 formed in the tube 5.
  • a stop 40 of the tube 15 limits the stroke of the insulating part 32 .
  • the volume 35 is closed by an annular insulating end piston 42, fixed to the tube 5 and having a guide segment 43 and a valve 44 allowing the passage of gas only from the outside to the inside of the volume 35.
  • the tube 5 has holes 46 at its end.
  • the tube 6 has holes 47.
  • the part 9 carries a contact 48 cooperating with one end 49 of the tube 5 to place the tube 5 at the same potential as the rest of the moving assembly at the end of the opening stroke.
  • the circuit breaker works as follows.
  • the vacuum generated in the volume 35 causes the valve 44 to open and the pressure in the volume 35 to be maintained. There is therefore no loss by suction.
  • the arc 60 which is established between the contacts 30 and 31 either at the same time as the arc 50, either slightly before or slightly after, creates a sufficiently low overpressure so as not to disturb this operation.
  • the current passes through contact 4, arc 50, tube 5, contacts 31B, contact 31, arc 60, contact 30 , the tube 15 and the part 9.
  • the part 32A After a certain stroke, determined as a function of the short-circuit current, the part 32A abuts on the stop 40.
  • the tube 5 continuing its stroke, the balls 36 leave the groove 39 and come to be positioned on the groove 38 (FIG. 3 ) at the end of the opening maneuver and the slight overpressure of the volume 20 disappears thanks to the holes 23A; the piston 22 abuts against the fixed piston 14.
  • the contact 48 puts the end 49 of the tube 5, and therefore the contact 31, at the potential of the part 9, of the tube 15 and therefore of the contact 30.
  • the maximum separation distance of the secondary contacts remains less to that of the arcing contacts, so that there is no risk of ignition due to excessive stretching of the secondary arcing.
  • the tube 6 is actuated to the left of the figure ( Figure 4).
  • the stop 6C drives the tube 5 and the contacts 30 and 31 come into contact, without creating an arc since they are at the same potential thanks to the contact of the parts 48 and 49.
  • the slight overpressure in the volume 35 is evacuated, by the holes 46 and 47 which coincide, towards the volume 70 inside the tube 5.
  • Figure 5 shows the circuit breaker being opened by moving the tube 6 to the right of the figure.
  • the very high intensity arc 60 causes rapid heating of the volume 35 and of the volume 35B surrounded by the contacts 30, 31, the piston 22 and the cylinder 5.
  • the hot gas of volume 35 passes through the orifices 33 of the part 32A.
  • the circuit breaker of the invention requires only a low operating energy for all the current values to be cut.
  • the number of elements is low and they are all of revolution which ensures an economical construction and an easy and fast assembly.

Landscapes

  • Circuit Breakers (AREA)
  • Electronic Switches (AREA)
  • Lasers (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Organic Insulating Materials (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (5)

  1. Hochspannungstrennschalter mit einem unter Druck stehenden dielektrischen Gas, der mindestens eine Trennkammer aufweist, die eine mit dem Gas gefüllte isolierende Hülle aufweist, in deren Innerem eine unbewegliche Schalteinheit, die einen feststehenden Hauptkontakt (2) und einen feststehenden Lichtbogenkontakt (4) enthält, und eine bewegliche Schalteinheit untergebracht sind, die insbesondere einen beweglichen Hauptkontakt (7) und einen beweglichen Lichtbogenkontakt (5) aufweist, wobei die Trennkammer weiter einen Blaszylinder (20), der in einer Blasdüse (8) endet, einen festen Blaskolben (14) und ein Paar Sekundärkontakte (30, 31) aufweist, dadurch gekennzeichnet, daß der Blaszylinder (20) durch ein erstes Rohr (5), das den beweglichen Lichtbogenkontakt bildet, durch ein zweites Rohr (7), das den beweglichen Hauptkontakt bildet, und durch den feststehenden Blaskolben (14) begrenzt wird, daß das erste Rohr (5) und ein drittes Rohr (15), das mit der feststehenden Schalteinheit verbunden und konzentrisch zum ersten Rohr (5) angeordnet ist, auf der anderen Seite des feststehenden Blaskolbens (14) ein veränderliches Volumen (35, 35B) begrenzt, das die Sekundärkontakte (30, 31) enthält und an der einen Seite durch einen Schließkolben (22) und an der anderen Seite durch einen ringförmigen Endkolben (42) geschlossen ist, der mit dem ersten Rohr (5) verbunden ist und entlang des dritten Rohres (15) gleitet, wobei ein erster Sekundärkontakt (30) fest mit dem dritten Rohr (15) verbunden ist, der zweite Sekundärkontakt (31) vom ersten Rohr (5) mitgenommen wird und sich entlang des ersten Rohres (5) zwischen einer ersten und einer zweiten feststehenden Position verschieben muß und wobei die Sekundärkontakte in der ersten Position, die dem geschlossenen Zustand des Trennschalters entspricht, miteinander in Berührung kommen, während der zweite Sekundärkontakt (31) in der zweiten Position mit einem Ansatz (40) des dritten Rohres (15) in Anschlag kommt, derart, daß der maximale Trennabstand der Sekundärkontakte (30, 31) auf eine Größe beschränkt wird, die kleiner als der maximale Trennabstand der Lichtbogenkontakte ist.
  2. Trennschalter nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Sekundärkontakt (31) mit einer Einrasteinrichtung (36, 37) versehen ist, die mit Kehlen (38, 39) zusammenwirkt, die zum Sperren des zweiten Sekundärkontaktes (31) in den festen Positionen in das erste Rohr (5) eingearbeitet sind, wobei die bewegliche Schalteinheit einen Kontakt (49) aufweist, der mit einem mit der feststehenden Schalteinheit fest verbundenen Kontakt (48) zusammenwirkt, um den zweiten Sekundärkontakt (31) während der Schließphase des Trennschalters auf das Potential des ersten Sekundärkontaktes (30) zu bringen.
  3. Trennschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der den Blaszylinder (20) schließende Kolben (14) ein Ventil (17) besitzt, das den Durchtritt des Gases nur von außen her in das Innere des Zylinders gestattet.
  4. Trennschalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der ringförmige Endkolben (42) ein Ventil (44) besitzt, das den Durchtritt des Gases nur von außen her in das Innere des die Sekundärkontakte (30, 31) enthaltenden Volumens (35, 35B) gestattet.
  5. Trennschalter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das erste Rohr (5) verschiebbar mit einem Mitnehmerrohr (6) verbunden ist, derart, daß beim erneuten Schließen des Trennschalters Löcher (46), die in das erste Rohr (5) eingebracht sind, mit Löchern (47), die in das Mitnehmerrohr (6) eingearbeitet sind, fluchten, um den Überdruck des die Sekundärkontakte (30, 31) enthaltenden Volumens (35) entweichen zu lassen.
EP89104558A 1988-03-23 1989-03-15 Hochspannungsschalter mit geringer Antriebsenergie Expired - Lifetime EP0334181B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89104558T ATE99829T1 (de) 1988-03-23 1989-03-15 Hochspannungsschalter mit geringer antriebsenergie.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8803803 1988-03-23
FR8803803A FR2629260B1 (fr) 1988-03-23 1988-03-23 Disjoncteur a haute tension a faible energie de manoeuvre

Publications (2)

Publication Number Publication Date
EP0334181A1 EP0334181A1 (de) 1989-09-27
EP0334181B1 true EP0334181B1 (de) 1994-01-05

Family

ID=9364564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104558A Expired - Lifetime EP0334181B1 (de) 1988-03-23 1989-03-15 Hochspannungsschalter mit geringer Antriebsenergie

Country Status (9)

Country Link
US (1) US4945198A (de)
EP (1) EP0334181B1 (de)
JP (1) JP2577080B2 (de)
CN (1) CN1017578B (de)
AT (1) ATE99829T1 (de)
BR (1) BR8901362A (de)
CA (1) CA1309443C (de)
DE (1) DE68911962T2 (de)
FR (1) FR2629260B1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647255B1 (fr) * 1989-05-17 1993-04-23 Alsthom Gec Disjoncteur a haute tension a gaz dielectrique de soufflage
FR2661550B1 (fr) * 1990-04-26 1992-06-12 Alsthom Gec Disjoncteur a haute tension a arc serie.
ATE140100T1 (de) * 1992-02-06 1996-07-15 Gec Alsthom T & D Ag Druckgasschalter
FR2691575B1 (fr) * 1992-05-25 1994-07-01 Alsthom Gec Disjoncteur a haute tension a non passages par zero du courant.
FR2742576B1 (fr) * 1995-12-14 1998-01-09 Gec Alsthom T & D Sa Disjoncteur a haute tension a energie de manoeuvre reduite
DE19629475A1 (de) 1996-07-10 1998-01-15 Siemens Ag Druckgasleistungsschalter
FR2764728B1 (fr) * 1997-06-12 1999-09-24 Gec Alsthom T & D Sa Disjoncteur a resistance de fermeture
FR2947377B1 (fr) * 2009-06-29 2011-07-22 Areva T & D Sa Valve a clapet de decharge destinee a decharger un gaz dielectrique entre deux volumes d'une chambre de coupure de disjoncteur haute ou moyenne tension
CN101930871B (zh) * 2010-08-25 2012-11-21 中国西电电气股份有限公司 一种高压开关设备用高载流能力灭弧室
KR101911611B1 (ko) * 2014-06-13 2018-10-24 에이비비 슈바이쯔 아게 차단기 구동형 레지스터 스위치 조립체

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610763A1 (fr) * 1987-02-09 1988-08-12 Alsthom Disjoncteur a faible energie de manoeuvre

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE21848E (en) * 1936-02-27 1941-07-01 Electric circuit breaker
DE2349263C2 (de) * 1973-10-01 1982-08-26 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer Druckgasschalter
GB1596867A (en) * 1978-05-30 1981-09-03 Aei Gas blast switches and circuit interrupters
DE3224778C2 (de) * 1981-03-30 1986-06-05 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Elektrische Schaltkammer mit Hilfslichtbogen für einen autopneumatischen Druckgasschalter
FR2535518B1 (fr) * 1982-10-28 1985-10-25 Alsthom Atlantique Chambre de coupure pour disjoncteur a gaz
DE3344094A1 (de) * 1983-12-02 1985-06-13 Siemens AG, 1000 Berlin und 8000 München Elektrischer druckgasschalter
FR2576142B1 (fr) * 1985-01-16 1987-12-24 Alsthom Atlantique Disjoncteur a haute tension, a gaz comprime, a energie de manoeuvre assistee par l'effet thermique de l'arc
JP2521262B2 (ja) * 1986-07-07 1996-08-07 株式会社日立製作所 パツフア式ガス遮断器
FR2619246B1 (fr) * 1987-08-03 1989-11-17 Alsthom Disjoncteur a haute ou moyenne tension a gaz sous pression a energie de coupure prelevee sur celle de l'arc

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610763A1 (fr) * 1987-02-09 1988-08-12 Alsthom Disjoncteur a faible energie de manoeuvre

Also Published As

Publication number Publication date
FR2629260B1 (fr) 1994-07-08
EP0334181A1 (de) 1989-09-27
CA1309443C (fr) 1992-10-27
JPH02148526A (ja) 1990-06-07
DE68911962T2 (de) 1994-04-28
CN1017578B (zh) 1992-07-22
JP2577080B2 (ja) 1997-01-29
FR2629260A1 (fr) 1989-09-29
BR8901362A (pt) 1989-11-07
DE68911962D1 (de) 1994-02-17
CN1036659A (zh) 1989-10-25
US4945198A (en) 1990-07-31
ATE99829T1 (de) 1994-01-15

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