EP0398213A1 - Mittelspannungsschalter für hohen Nennstrom - Google Patents

Mittelspannungsschalter für hohen Nennstrom Download PDF

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Publication number
EP0398213A1
EP0398213A1 EP90109022A EP90109022A EP0398213A1 EP 0398213 A1 EP0398213 A1 EP 0398213A1 EP 90109022 A EP90109022 A EP 90109022A EP 90109022 A EP90109022 A EP 90109022A EP 0398213 A1 EP0398213 A1 EP 0398213A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
contact
main
tube
movable
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
EP90109022A
Other languages
English (en)
French (fr)
Other versions
EP0398213B1 (de
Inventor
Denis Dufournet
Michael 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
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 GEC Alsthom SA filed Critical GEC Alsthom SA
Publication of EP0398213A1 publication Critical patent/EP0398213A1/de
Application granted granted Critical
Publication of EP0398213B1 publication Critical patent/EP0398213B1/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
    • H01H33/88—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
    • 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

Definitions

  • the present invention relates to a dielectric blast gas circuit breaker and more particularly to a medium voltage circuit breaker, in which a current of high intensity (several thousand amps) flows.
  • This type of circuit breaker is found in power plants, at the output of the alternator and upstream of the step-up transformer.
  • the permanent movable contact through which the permanent current passes, is most often a copper tube of relatively high mass which, when tripped, is driven with the arcing contact, at high speed. .
  • the energy necessary for this maneuver is important since it is proportional to the product of the mass of the moving assembly by the square of the speed of movement of this crew. All manufacturers seek to reduce this operating energy because its importance penalizes the cost price of the control of the switching device.
  • An object of the invention is to provide a circuit breaker in which both the mass and the speed of movement when the movable contact is triggered are reduced compared to those of the contact of the prior art, while maintaining a high speed of movement arcing contacts.
  • the subject of the invention is therefore a dielectric blowing gas circuit breaker comprising a main fixed contact, a main arcing contact and a moving element comprising in particular a movable arcing contact and a blowing means characterized in that it comprises a movable main contact separated from said movable assembly and produced by means of a short cylindrical element associated with a displacement means communicating to it on triggering a speed lower than that of the movable assembly.
  • said element is a tube.
  • said element consists of rods arranged according to certain generatrices of a cylinder.
  • said displacement means is a spring supported by a first end on a fixed stop and by a second end on a stop secured to said tube.
  • the circuit breaker partially represented in FIG. 1, in half-section of axis xx, comprises an insulating envelope 1 delimiting a volume 2 filled with a gas with good dielectric properties such as sulfur hexafluoride (SF6) under a pressure of a few bars.
  • a gas with good dielectric properties such as sulfur hexafluoride (SF6) under a pressure of a few bars.
  • the fixed assembly comprises a fixed main contact consisting of fingers 3 and a fixed arcing contact consisting of a tube 4 having an end 4A of an alloy resistant to the effects of the arc, for example a tungsten-based alloy. Contacts 3 and 4 are connected to a first socket not shown.
  • the fixed assembly further comprises a crown of fingers 6 carried by a crown fixed 7. The fingers 6 carry, internally at the crown, an annular stop 8. The fixed crown is electrically connected to a second socket not shown.
  • the fixed crown 7 carries a tube 9 from machining, of axis xx, which ends with a piston 10, provided with a one-way valve 11, a seal 12 and sliding electrical contacts 13.
  • the moving element comprises an arcing contact consisting of a tube 15, of axis xx, having an end 15A of material resistant to the effects of the arcing.
  • This tube 15 is integral with a coaxial tube 16, with which it defines a blowing cylinder moving around the fixed piston 10.
  • the seal between the piston 10 and the cylinder 16 is ensured by the seal 12; the passage of current between the tube 15 and the piston 10 is ensured by the sliding contacts 13.
  • the tube 16 carries a blowing nozzle made of insulating material.
  • the tubes 15 and 16 are advantageously produced in the same machined part; holes 18, formed in the part connecting the two tubes, make it possible to establish communication between the volume 20 and the volume 21 comprised between the tube 15 and the nozzle 17.
  • the tube 15 is extended by a part 22 connected to an operating rod, not shown. Holes 15B in the tube 15, and 9A in the tube 9, allow, when the circuit breaker opens, the evacuation of the hot gas to the volume 2.
  • the movable main contact is constituted by a short metal cylinder 30 cooperating with the fingers 3 and 6.
  • This cylinder is fixed to the end of a tube 31 terminated by a ring 32.
  • the tube could be replaced by a set of rods arranged according to certain generatrices of a cylinder).
  • a spring 33 bandaged when the circuit breaker is in the engaged position (FIG. 1), is disposed between the annular stop 8 and the ring 32.
  • the circuit breaker works as follows: - in the engaged position ( Figure 1) the current flows through the fingers 3, the tube 30, the fingers 6 and the crown 7. - At the opening of the circuit breaker ( Figure2), the tube 22 is driven at high speed (V2) to the right of the figure.
  • the tube 30 leaves the fingers 3 at a lower speed (V1) which is that given by the energy of the spring 33.
  • a spring has been given as an example of means for implementing the movable arcing contact; another possibility is to use a game of lever linked to the moving assembly and the production of which is well known to those skilled in the art.
  • circuit breakers provided with means for creating a secondary arc which comes to aid in the blowing of the arc and / or in the tripping operation.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Push-Button Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Relay Circuits (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Organic Insulating Materials (AREA)
EP90109022A 1989-05-19 1990-05-14 Mittelspannungsschalter für hohen Nennstrom Expired - Lifetime EP0398213B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8906554 1989-05-19
FR8906554A FR2647254B1 (fr) 1989-05-19 1989-05-19 Disjoncteur a moyenne tension a courant nominal eleve

Publications (2)

Publication Number Publication Date
EP0398213A1 true EP0398213A1 (de) 1990-11-22
EP0398213B1 EP0398213B1 (de) 1995-03-15

Family

ID=9381803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109022A Expired - Lifetime EP0398213B1 (de) 1989-05-19 1990-05-14 Mittelspannungsschalter für hohen Nennstrom

Country Status (11)

Country Link
US (1) US4996398A (de)
EP (1) EP0398213B1 (de)
JP (1) JP2568296B2 (de)
CN (1) CN1022270C (de)
AT (1) ATE120030T1 (de)
BR (1) BR9002332A (de)
CA (1) CA2017127C (de)
DE (1) DE69017752T2 (de)
DK (1) DK0398213T3 (de)
ES (1) ES2070203T3 (de)
FR (1) FR2647254B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1811537A1 (de) 2006-01-23 2007-07-25 ABB Technology AG Schaltkammer für einen gasisolierten Hochspannungsschalter

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4174094B2 (ja) * 1998-01-29 2008-10-29 株式会社東芝 ガス遮断器
EP1403891B2 (de) † 2002-09-24 2016-09-28 ABB Schweiz AG Leistungsschalter
DE102010062343A1 (de) * 2010-12-02 2012-06-06 Siemens Aktiengesellschaft Elektrokontaktanordnung
CN111799128B (zh) * 2020-07-17 2022-07-29 西安西电开关电气有限公司 一种压气缸系统及其大容量开关设备
CN113690093B (zh) * 2021-08-25 2023-01-24 西安西电开关电气有限公司 断路器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1458334A (fr) * 1965-08-18 1966-03-04 Comp Generale Electricite Dispositif de coupure pour courants de forte intensité
US3271548A (en) * 1963-10-11 1966-09-06 Westinghouse Electric Corp Contact constructions for circuit interrupters
DE2604702A1 (de) * 1975-07-11 1977-01-20 Sprecher & Schuh Ag Druckgasschalter
EP0011542A1 (de) * 1978-11-14 1980-05-28 Merlin Gerin Leistungsschalter mit getrennten Leistungs- und Parallelstrombahnen
EP0028039A1 (de) * 1979-10-25 1981-05-06 BBC Aktiengesellschaft Brown, Boveri & Cie. Druckgasschalter
FR2519470A1 (fr) * 1982-01-05 1983-07-08 Alsthom Atlantique Disjoncteur a gaz comprime
FR2554273A1 (fr) * 1983-10-28 1985-05-03 Bbc Brown Boveri & Cie Disjoncteur de puissance a haute tension

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3271548A (en) * 1963-10-11 1966-09-06 Westinghouse Electric Corp Contact constructions for circuit interrupters
FR1458334A (fr) * 1965-08-18 1966-03-04 Comp Generale Electricite Dispositif de coupure pour courants de forte intensité
DE2604702A1 (de) * 1975-07-11 1977-01-20 Sprecher & Schuh Ag Druckgasschalter
EP0011542A1 (de) * 1978-11-14 1980-05-28 Merlin Gerin Leistungsschalter mit getrennten Leistungs- und Parallelstrombahnen
EP0028039A1 (de) * 1979-10-25 1981-05-06 BBC Aktiengesellschaft Brown, Boveri & Cie. Druckgasschalter
FR2519470A1 (fr) * 1982-01-05 1983-07-08 Alsthom Atlantique Disjoncteur a gaz comprime
FR2554273A1 (fr) * 1983-10-28 1985-05-03 Bbc Brown Boveri & Cie Disjoncteur de puissance a haute tension

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1811537A1 (de) 2006-01-23 2007-07-25 ABB Technology AG Schaltkammer für einen gasisolierten Hochspannungsschalter
WO2007082399A1 (de) * 2006-01-23 2007-07-26 Abb Technology Ag Schaltkammer für einen gasisolierten hochspannungsschalter

Also Published As

Publication number Publication date
DE69017752D1 (de) 1995-04-20
US4996398A (en) 1991-02-26
BR9002332A (pt) 1991-08-06
FR2647254A1 (fr) 1990-11-23
FR2647254B1 (fr) 1991-07-05
CN1022270C (zh) 1993-09-29
EP0398213B1 (de) 1995-03-15
CN1050286A (zh) 1991-03-27
DE69017752T2 (de) 1995-07-13
ATE120030T1 (de) 1995-04-15
ES2070203T3 (es) 1995-06-01
JPH0329230A (ja) 1991-02-07
JP2568296B2 (ja) 1996-12-25
CA2017127A1 (fr) 1990-11-19
CA2017127C (fr) 1993-12-07
DK0398213T3 (da) 1995-07-03

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