EP0454035A1 - Mittel- oder Hochspannungsschalter mit aneinanderstossenden Lichtbogenkontakten - Google Patents

Mittel- oder Hochspannungsschalter mit aneinanderstossenden Lichtbogenkontakten Download PDF

Info

Publication number
EP0454035A1
EP0454035A1 EP91106453A EP91106453A EP0454035A1 EP 0454035 A1 EP0454035 A1 EP 0454035A1 EP 91106453 A EP91106453 A EP 91106453A EP 91106453 A EP91106453 A EP 91106453A EP 0454035 A1 EP0454035 A1 EP 0454035A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
contacts
tube
contact
arc
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.)
Withdrawn
Application number
EP91106453A
Other languages
English (en)
French (fr)
Inventor
Denis Dufournet
Bernard Joyeux-Bouillon
Jean Maineult
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 EP0454035A1 publication Critical patent/EP0454035A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/48—Driving mechanisms, i.e. for transmitting driving force to the contacts using lost-motion device

Definitions

  • the present invention relates to a circuit breaker with end arcing contacts, usable at medium or high voltage.
  • Circuit breakers with end arc contact comprising a sealed envelope filled with gases having good dielectric properties such as sulfur hexafluoride, and in which the arc is blown by compression of the gas during an operation of opening.
  • gases having good dielectric properties such as sulfur hexafluoride
  • gas compression occurs before the separation of the arcing contacts (this is called precompression); during this precompression phase, the main contacts of the circuit breaker are opened, which can be arranged outside the enclosure; the disadvantage of the precompression phase is that it requires significant operating energy which increases the cost of the device.
  • An object of the present invention is to provide a circuit breaker with arc blast at the end, arc blowing requiring only reduced energy for its operation.
  • the subject of the invention is a high or medium voltage circuit breaker with end arcing contacts, comprising a sealed insulating envelope filled with a gas having good dielectric properties, inside which a fixed arcing contact are arranged. , a movable arcing contact driven by an operating rod actuated by a mechanism external to the casing, a blowing chamber comprising a piston integral with the movable arcing contact and capable of sliding in a fixed cylinder, and a blowing nozzle , characterized in that it comprises means so that the operating rod moves over a given length without causing said arcing contact.
  • said movable arcing contact is a tube, said means comprising a light provided in the tube in which is engaged an arm secured to the operating rod.
  • the circuit breaker comprises fixed permanent contacts mechanically and electrically connected to said fixed arcing contact and cooperating with a tube constituting a mobile permanent contact connected to said operating rod.
  • the reference 1 designates a cylindrical insulating envelope, for example of porcelain, which delimits an interior volume 2, tight and filled with a gas with good dielectric properties such as sulfur hexafluoride, pure or mixed with nitrogen, under a pressure of a few bars.
  • a gas with good dielectric properties such as sulfur hexafluoride, pure or mixed with nitrogen, under a pressure of a few bars.
  • the fixed arcing contact of the circuit breaker consists of a metal tube 3, connected to a block 4 passing through the casing in a sealed manner and connected to a first socket 5.
  • the end 3A of the tube 3 is made in a alloy resistant to the effects of the arc, for example based on tungsten.
  • Block 4 is drilled, inside the envelope 1, a channel 6 to promote the circulation of gas inside the envelope.
  • the movable arcing contact consists of a metal tube 7, the end of which 7A which cooperates with the tube 3 is also made of an arc-resistant alloy.
  • the tube 7 has, towards its end opposite to the end 7A, at least one lateral bore 7B for the evacuation of the gas.
  • the tube 7 is integral with a blowing piston 9, provided with orifices 10 and associated with a cylinder 11 carrying a blowing nozzle 12 made of insulating material.
  • the piston 9 slides in a first bore 14 of a metal block 15 resting on the internal face of the insulating column 1.
  • This block 15 comprises a metal crown 16, coming from milling, which delimits, with the piston 9 and the wall of the bore 14 a blowing volume 17.
  • the crown carries a central hole not referenced in which slides the tube 7.
  • the crown 16 is pierced with at least one hole 18 associated with a unidirectional valve, which can be simply constituted by a flexible washer 19, and which allows the passage of gas only from the outside to the inside of the volume 17.
  • the block 15 is pierced with a channel 15A parallel to the axis of the column and making the volumes located on either side communicate.
  • the tube 7 is fixed, by a screw 20, to a metal cylinder 21 integral with an annular guide piece 22 which can slide in a second bore 23 of the block 15.
  • the part 22 is pierced with holes 22A.
  • the cylinder 21 has a slot 24 in which is engaged an arm 25 connected to a rod 26 articulated on a connecting rod 27 of the operating device, which further comprises a crank 28 wedged on a rotary shaft 29 driven by an operating device not shown , outside the envelope 1.
  • a spring 30, bearing on the ring 22, tends to push back the arm 25.
  • the cylinder 21 is electrically connected, by a braid 31, to a second socket 32 fixed to the block 15 and passing through the envelope in a sealed manner.
  • the maneuvering energy is reduced since there is no compression of the gas until the arc has burst.
  • the operating rod gains speed during the first phase, so that the arcing contacts separate very suddenly at the start of the second phase, which promotes cutting.
  • the embodiment which has just been described relates to a circuit breaker, preferably at medium voltage, in which the main contacts are outside the envelope containing the breaking chamber.
  • the variant embodiment of the invention shown in FIG. 4, relates to a circuit breaker used in high voltage, with main contacts placed inside the breaking chamber.
  • the metal block 4 carries contact fingers 40 constituting the fixed permanent contact of the circuit breaker.
  • the movable permanent contact consists of a metal tube 41 connected by arms 41A and a bar 41B, to an operating rod made of insulating material 42.
  • the blowing cylinder is a tube 43 sliding inside the tube 41 and in connection electric with the latter by sliding contacts 44.
  • the bottom 45 of the cylinder 43 is fixed by metal arms 46 secured to a fixed metal block 47 crossed by the insulating rod 42; at least one of the arms 46 is connected to the second socket 32.
  • the bottom 45 of the cylinder 43 is pierced with a central hole through which passes a metal tube 48 constituting the movable arcing contact and provided with a end of material resistant to the effects of the arc; this tube has a light 48A in which the bar 41B is engaged; moreover, a spring 50 is disposed between the bar 41 B and a ring 51 of the tube 48.
  • blowing piston 52 integral with the movable contact 48 and provided with orifices 53.
  • the bottom 45 of the cylinder 43 is provided with sliding contacts 55 to ensure the electrical connection between this bottom and the movable arcing contact; moreover, this bottom 45 is provided with a unidirectional valve 56 authorizing the passage of gas only from the outside towards the inside of the blowing volume 57 delimited by the cylinder 43, the bottom 45 and the piston 52.
  • the piston 52 is extended by a metal cylinder 58 which can slide inside the cylinder 43 and carrying a blowing nozzle 60 made of insulating material.
  • This alternative embodiment is preferably used for high voltage circuit breakers.

Landscapes

  • Circuit Breakers (AREA)
EP91106453A 1990-04-25 1991-04-22 Mittel- oder Hochspannungsschalter mit aneinanderstossenden Lichtbogenkontakten Withdrawn EP0454035A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9005263A FR2661549B1 (fr) 1990-04-25 1990-04-25 Disjoncteur a moyenne ou haute tension a contacts d'arc en bout.
FR9005263 1990-04-25

Publications (1)

Publication Number Publication Date
EP0454035A1 true EP0454035A1 (de) 1991-10-30

Family

ID=9396068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106453A Withdrawn EP0454035A1 (de) 1990-04-25 1991-04-22 Mittel- oder Hochspannungsschalter mit aneinanderstossenden Lichtbogenkontakten

Country Status (7)

Country Link
US (1) US5162627A (de)
EP (1) EP0454035A1 (de)
JP (1) JPH04262333A (de)
CN (1) CN1025090C (de)
BR (1) BR9101627A (de)
CA (1) CA2041108C (de)
FR (1) FR2661549B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102368443A (zh) * 2011-10-10 2012-03-07 厦门华电开关有限公司 快速分离隔离开关

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59200933D1 (de) * 1991-04-12 1995-01-26 Gec Alsthom T & D Ag Druckgasschalter.
US6996549B2 (en) * 1998-05-01 2006-02-07 Health Discovery Corporation Computer-aided image analysis
US7151353B2 (en) 2000-09-18 2006-12-19 Abb Ab Switching device
US7321281B2 (en) * 2005-05-17 2008-01-22 Gigavac Llc Hermetically sealed relay having low permeability plastic housing
JP5153255B2 (ja) * 2007-08-13 2013-02-27 三菱電機株式会社 接地開閉装置
EP2309526B1 (de) * 2009-10-08 2012-10-03 ABB Technology AG Leistungsschalter mit parallelen Nennstrompfaden
KR101786518B1 (ko) * 2011-04-27 2017-10-18 엘에스산전 주식회사 가스 절연 차단기용 소호부
KR101622422B1 (ko) 2011-07-20 2016-05-18 엘에스산전 주식회사 가스 절연 차단기
CN102319601B (zh) * 2011-10-10 2013-08-28 沈阳重型机械集团有限责任公司 废钢破碎机排尘管道密封装置
CN102760607B (zh) * 2012-07-24 2014-10-29 上海天灵开关厂有限公司 一种气体绝缘环网柜用压气式负荷开关
US11069494B2 (en) * 2017-11-17 2021-07-20 Mitsubishi Electric Corporation Switchgear

Citations (3)

* 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
FR2174838A1 (de) * 1972-03-07 1973-10-19 Siemens Ag
US4489226A (en) * 1982-09-03 1984-12-18 Mcgraw-Edison Company Distribution class puffer interrupter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2057344A5 (de) * 1969-08-12 1971-05-21 Merlin Gerin
US3763340A (en) * 1971-02-12 1973-10-02 Siemens Ag High-voltage circuit breaker equipped with means for placing a resistor in parallel with the breaker contact during breaker closing operations
JPS5851426A (ja) * 1981-09-21 1983-03-26 株式会社日立製作所 抵抗しや断方式ガスしや断器
JPS5894723A (ja) * 1981-11-30 1983-06-06 株式会社日立製作所 抵抗接点付遮断器
JPS59163723A (ja) * 1983-03-08 1984-09-14 三菱電機株式会社 抵抗付しや断器
FR2639147B1 (fr) * 1988-09-16 1990-12-14 Alsthom Gec Disjoncteur a haute tension a gaz dielectrique utilise pour le soufflage
FR2638564B1 (fr) * 1988-11-02 1990-11-30 Alsthom Gec Disjoncteur a haute tension a gaz dielectrique sous pression

Patent Citations (3)

* 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
FR2174838A1 (de) * 1972-03-07 1973-10-19 Siemens Ag
US4489226A (en) * 1982-09-03 1984-12-18 Mcgraw-Edison Company Distribution class puffer interrupter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102368443A (zh) * 2011-10-10 2012-03-07 厦门华电开关有限公司 快速分离隔离开关
CN102368443B (zh) * 2011-10-10 2014-03-12 厦门华电开关有限公司 快速分离隔离开关

Also Published As

Publication number Publication date
JPH04262333A (ja) 1992-09-17
BR9101627A (pt) 1991-12-10
FR2661549A1 (fr) 1991-10-31
CA2041108C (fr) 1994-11-22
FR2661549B1 (fr) 1996-07-19
CN1025090C (zh) 1994-06-15
CN1056766A (zh) 1991-12-04
US5162627A (en) 1992-11-10

Similar Documents

Publication Publication Date Title
EP0388323B1 (de) Elektrischer Autoexpansionsschalter mit Isoliergas
EP0298809B1 (de) Selbstbeblasender elektrischer Lastschalter mit rotierendem Lichtbogen
EP0454035A1 (de) Mittel- oder Hochspannungsschalter mit aneinanderstossenden Lichtbogenkontakten
FR2491675A1 (fr) Dispositif de coupure a double mouvement des contacts
EP0240397A1 (de) Selbstbeblasender elektrischer Lastschalter mit rotierendem Lichtbogen
FR2638564A1 (fr) Disjoncteur a haute tension a gaz dielectrique sous pression
FR2576144A1 (fr) Disjoncteur a haute tension, a gaz comprime, a faible energie de manoeuvre
FR2680911A1 (fr) Sectionneur de terre a pouvoir de coupure.
FR2576143A1 (fr) Disjoncteur a haute tension, a gaz comprime, a energie de manoeuvre assistee par l'effet thermique de l'arc et a double mouvement
EP0759629B1 (de) Lastschalter mit Einschaltwiderstand und Einfügungsvorrichtung
EP0433183B1 (de) Dreipoliger gasisolierter Hochspannungsschalter
CA2020281C (fr) Disjoncteur a haute ou moyenne tension
EP0412479A1 (de) Mittelspannungsschalter
EP0450567B1 (de) Hoch- oder Mittelspannungs-Schalter mit aufeinanderstossenden Lichtbogenkontakten
EP0515268B1 (de) Varistor Einführvorrichtung, eingebaut in einem Hochspannungslastschalter
EP0785562B1 (de) Lastschalter mit Kontakten mit Doppelbewegung
EP0021951A1 (de) Selbstbeblasender Schalter mit Saugwirkung
EP0458236B1 (de) Mittelspannungsschalter
EP0398213A1 (de) Mittelspannungsschalter für hohen Nennstrom
FR2459543A1 (fr) Disjoncteur a haute tension a arc tournant et autosoufflage
CH688702A5 (fr) Disjoncteur à haute tension ayant une chambre de coupure à volume de soufflage variable.
FR2737937A1 (fr) Disjoncteur a double mouvement avec resistance de fermeture
FR2690004A1 (fr) Contacts électriques.
FR2665020A1 (fr) Disjoncteur pour la coupure des courants eleves.
FR2646961A1 (fr) Disjoncteur a moyenne tension a autosoufflage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19911218

17Q First examination report despatched

Effective date: 19940120

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19940920