EP0450567B1 - Disjoncteur à haute ou moyenne tension à contacts d'arc en bout - Google Patents

Disjoncteur à haute ou moyenne tension à contacts d'arc en bout Download PDF

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Publication number
EP0450567B1
EP0450567B1 EP91105182A EP91105182A EP0450567B1 EP 0450567 B1 EP0450567 B1 EP 0450567B1 EP 91105182 A EP91105182 A EP 91105182A EP 91105182 A EP91105182 A EP 91105182A EP 0450567 B1 EP0450567 B1 EP 0450567B1
Authority
EP
European Patent Office
Prior art keywords
tube
circuit breaker
blast
contacts
spring
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
EP91105182A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0450567A1 (fr
Inventor
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
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 EP0450567A1 publication Critical patent/EP0450567A1/fr
Application granted granted Critical
Publication of EP0450567B1 publication Critical patent/EP0450567B1/fr
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

Definitions

  • the invention relates to a circuit breaker with end contacts, usable in high or medium voltage electrical circuits.
  • circuit breakers with end contacts of the type comprising a blowing piston
  • a compression of the blowing gas can occur before the separation of the arcing contacts, so as to make the subsequent blowing of the arc more energetic and therefore, more efficient.
  • FIG. 1 is a partial view in axial half-section.
  • the reference 1 designates an operating rod, connected to a tube 2 carrying a blowing piston 3 provided with passages 3A, and a blowing nozzle 4.
  • a blowing volume 5 is defined by the tube 2 and a tube 6 which is attached to it. coaxial and which is integral with a block 7 connected to a first outlet of the circuit breaker, not shown. Sliding contacts 7A provide the electrical connection between the block 7 and the tube 2.
  • Reference 8 designates the fixed arcing contact, of tubular shape, connected to a second circuit breaker socket, not shown.
  • the second arcing contact is a semi-mobile contact pushed by a first end of a spring 10, the second end of which rests on a shoulder of the tube 2.
  • a part of the tubes 9 and 2 are opposite one another; the tube 2 begins its movement when the circuit breaker trips, without causing the contact 9; there is therefore a precompression of volume 5 before the separation of the end contacts which only occurs when the annular ends 2A and 9A of the tubes 2 and 9 come into contact.
  • Contacts 9B ensure the passage of current between the tube 9 and the tube 2.
  • An object of the present invention is to provide a circuit breaker with end arcing contacts having a reduced number of electrical contacts, so as to reduce the cost price and the maintenance cost.
  • the invention aims to propose a simple circuit breaker.
  • the reference 20 designates a porcelain envelope delimiting a sealed enclosure in which is placed a gas with good dielectric properties such as sulfur hexafluoride (SF6), pure or mixed with nitrogen, under a pressure of a few bars.
  • a gas with good dielectric properties such as sulfur hexafluoride (SF6), pure or mixed with nitrogen, under a pressure of a few bars.
  • the envelope 20 is closed at one end by a metal cover 22 carrying a first socket outlet 23.
  • the circuit breaker comprises an arcing contact 24, produced in a tubular form, integral with a fixed block 25 linked to the cover 22 and pierced with a transverse passage 26 to facilitate the circulation of gas in the enclosure 21.
  • the end 27 of the tube 24 is made of a material resistant to the effects of the electric arc, for example an alloy based on tungsten.
  • the mobile assembly of the circuit breaker comprises a metal tube milled so as to comprise a part 31 of small diameter, connected by an articulation 45 to an operating rod 46, and a portion 32 of larger diameter and carrying a blowing nozzle 37 of insulating material.
  • the parts 31 and 32 are connected by a substantially annular part 33 comprising a shoulder 33A, holes 34 and a bead 35 provided with a seal 36.
  • This annular part constitutes a blowing piston.
  • the tubular part 31 defines, with a tube 40 connected to a metal block 42, a blowing volume 41 in which the aforementioned piston can slide.
  • Block 42 is connected to a second socket, not shown, of the circuit breaker.
  • Sliding contacts 43 ensure the passage of current between the tube 31 and the block 42.
  • a layer 43A of an appropriate alloy, for example a silver-based alloy, allows better electrical contact between the tube 31 and the contacts 43.
  • a tube 50 constituting the second arcing contact. It comprises one end 51 of an alloy resistant to the effects of the arc and a bead 52 serving to support a first end of a spring 53, the other end of which rests on the shoulder 33A.
  • the tube 50 When the spring comes to the end of its relaxation, the tube 50 is driven with the movable assembly. An arc 60 springs up between the contacts 27 and 51 (FIG. 3); the current then passes through the socket 23, the cover 22, the block 25, the tube 24-27, the arc 60, the tube 51-50, the tube 31, the layer 43A, the contacts 43, the block 42 and the second take, not shown. The arc is blown by the compressed gas which escapes through the nozzle 37 and goes out at the first zero crossing of the current.
  • the passage 26 in the block 25, as well as a passage 55, in the block 42, allow good circulation of the gas inside the interrupting chamber, which promotes the restoration of the dielectric qualities of the gas after an operation of break.
  • the circuit breaker of the invention comprises only two electrical contacts instead of a minimum of three for circuit breakers of the prior art; consequently, its cost price and its maintenance cost are reduced.
  • the invention applies to the production of medium or high voltage circuit breakers, up to approximately 45 kV.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Push-Button Switches (AREA)
  • Electronic Switches (AREA)
  • Cable Accessories (AREA)
EP91105182A 1990-04-04 1991-04-02 Disjoncteur à haute ou moyenne tension à contacts d'arc en bout Expired - Lifetime EP0450567B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9004316A FR2660792B1 (fr) 1990-04-04 1990-04-04 Disjoncteur a haute ou moyenne tension a contacts d'arc en bout.
FR9004316 1990-04-04

Publications (2)

Publication Number Publication Date
EP0450567A1 EP0450567A1 (fr) 1991-10-09
EP0450567B1 true EP0450567B1 (fr) 1995-07-26

Family

ID=9395445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105182A Expired - Lifetime EP0450567B1 (fr) 1990-04-04 1991-04-02 Disjoncteur à haute ou moyenne tension à contacts d'arc en bout

Country Status (12)

Country Link
US (1) US5155314A (da)
EP (1) EP0450567B1 (da)
JP (1) JP2562086B2 (da)
CN (1) CN1023736C (da)
AT (1) ATE125639T1 (da)
BR (1) BR9101328A (da)
CA (1) CA2039645C (da)
DE (1) DE69111498T2 (da)
DK (1) DK0450567T3 (da)
ES (1) ES2075245T3 (da)
FR (1) FR2660792B1 (da)
GR (1) GR3017630T3 (da)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06310000A (ja) * 1993-04-20 1994-11-04 Hitachi Ltd 接地開閉装置
CN100414655C (zh) * 2006-09-25 2008-08-27 王光顺 用于特高压断路器的双向储能高速分断触头
CN104335315B (zh) 2012-05-22 2017-04-05 三菱电机株式会社 气体断路器
DK3465717T3 (da) * 2016-06-03 2020-10-26 Abb Schweiz Ag Gasisoleret lav- eller mellemspændingsbelastningsafbryder
DE102017222406A1 (de) * 2017-12-11 2019-06-13 Siemens Aktiengesellschaft Vakuumschaltröhre
CN113161193B (zh) * 2020-11-27 2022-08-30 平高集团有限公司 一种真空断路器及真空灭弧室

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE212352C (da) *
FR2441916A1 (fr) * 1978-11-14 1980-06-13 Merlin Gerin Disjoncteur electrique a autosoufflage equipe d'un dispositif a contacts principaux perfectionnes
US4327263A (en) * 1980-06-17 1982-04-27 Mitsubishi Denke Kabushiki Kaisha Switching device
DD212352A1 (de) * 1982-12-21 1984-08-08 Liebknecht Transformat Selbstloeschender druckgasschalter
DE3322597A1 (de) * 1983-05-31 1984-12-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
JPS61239529A (ja) * 1985-04-15 1986-10-24 東光電気株式会社 パツフア形ガスしや断器
FR2596575B1 (fr) * 1986-03-26 1988-05-20 Alsthom Disjoncteur a gaz dielectrique sous pression

Also Published As

Publication number Publication date
CA2039645C (fr) 1994-11-22
FR2660792B1 (fr) 1992-06-12
JPH04249821A (ja) 1992-09-04
CN1056184A (zh) 1991-11-13
EP0450567A1 (fr) 1991-10-09
DE69111498T2 (de) 1996-01-11
FR2660792A1 (fr) 1991-10-11
DE69111498D1 (de) 1995-08-31
ES2075245T3 (es) 1995-10-01
CN1023736C (zh) 1994-02-09
ATE125639T1 (de) 1995-08-15
GR3017630T3 (en) 1996-01-31
BR9101328A (pt) 1991-11-26
US5155314A (en) 1992-10-13
DK0450567T3 (da) 1995-10-09
JP2562086B2 (ja) 1996-12-11

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