EP0734035B1 - Self-blast circuit breaker with rotating arc - Google Patents

Self-blast circuit breaker with rotating arc Download PDF

Info

Publication number
EP0734035B1
EP0734035B1 EP19960103750 EP96103750A EP0734035B1 EP 0734035 B1 EP0734035 B1 EP 0734035B1 EP 19960103750 EP19960103750 EP 19960103750 EP 96103750 A EP96103750 A EP 96103750A EP 0734035 B1 EP0734035 B1 EP 0734035B1
Authority
EP
European Patent Office
Prior art keywords
arcing contact
circuit breaker
self
coil
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.)
Expired - Lifetime
Application number
EP19960103750
Other languages
German (de)
French (fr)
Other versions
EP0734035A1 (en
Inventor
Alain Schneider Electric Chapusot
Pierre Schneider Electric Chevrier
Jean Claude Schneider Electric Faye
Paul Schneider Electric Glenat
Steve Schneider Electric Rowe
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric High Voltage 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 Schneider Electric High Voltage SA filed Critical Schneider Electric High Voltage SA
Publication of EP0734035A1 publication Critical patent/EP0734035A1/en
Application granted granted Critical
Publication of EP0734035B1 publication Critical patent/EP0734035B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01H33/98—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
    • H01H33/982—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow in which the pressure-generating arc is rotated by a magnetic field
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/62—Heating or cooling of contacts
    • 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

Definitions

  • Such a circuit breaker is known from document EP-A-0 240 397.
  • the object of the invention is to improve the breaking of a self-expanding circuit breaker, regardless of the intensity of the current to be interrupted.
  • the circuit breaker according to the invention is characterized in that the breaking chamber contains in addition a cooling member arranged inside the coil to cool the gases hot in the vicinity of the fixed arcing contact, said cooling member being formed by a metal radiator subject to fixed arcing contact.
  • the radiator is attached to the internal wall of a tubular sleeve separated from the coil by an insulating coating, said sleeve being made of magnetic material to strengthen the magnetic field in the area of arc formation.
  • the presence of the radiator inside the coil limits any stagnation hot gas near the fixed arcing contact.
  • the radiator is equipped with a plurality of fins to optimize the heat exchange surface with the current supply socket at the coil.
  • a breaking chamber 10 of an autoexpansion and arc circuit breaker rotating is housed inside a sealed envelope (not shown) filled with gas insulator, with high dielectric strength, in particular sulfur hexafluoride.
  • the breaking chamber 10 contains a fixed annular arcing contact 12 mounted on the side internal of the front end face 14 of an electromagnetic coil 16.
  • the face rear 18 of the cylindrical coil 16 is electrically connected to a socket 20 current supply conductor passing through sealing the upper wall 22 of the chamber 10.
  • An insulating coating 24 is interposed radially between the side wall internal of the coil 16, and a tubular sleeve 26 of magnetic material, intended to strengthen the magnetic field in the arc formation area.
  • the fixed arcing contact 12 is formed by an annular track cooperating by abutment with a movable arcing contact 28 carried by the upper end of a tubular sleeve 30 in conductive material.
  • a compression spring 32 is coaxially associated with the end lower of the sleeve 30, which is additionally equipped with a control lug 34 likely to be driven in translation by a sliding contact 36 subject to a tube 38 mobile driver.
  • the movable tube 38 passes through a sealing hole 40 formed in an insulator 42 for closing the chamber 10.
  • the interior of the interrupting chamber 10 communicates with the volume of expansion of the casing of the circuit breaker through an exhaust channel 43 delimited by the hollow sleeve 30, so as to generate a gas flow in the event pressure increase caused by the rotation of the arc.
  • the cooling member 44 preferably metallic, is shaped as radiator 46 attached in thermal contact with the internal cylindrical wall of the sleeve 26, and bearing on the fixed arcing contact 12.
  • the radiator 46 is advantageously equipped 48 annular fins to optimize the heat exchange surface with the gaseous medium surrounding.
  • the presence of the radiator 46 inside the coil 16 limits any stagnation of gas hot near the fixed arcing contact 12, i.e. in the first part of the arc formation which is not traversed by the gas flow.
  • the arc is extinguished normally by the gas flow established through the tubular sleeve 30 of support of the movable arcing contact 28, constituting the second part of the formation zone arc.
  • the efficient cooling of the hot gases in the vicinity of the fixed arcing contact 12 contributes to improve the arc extinction and obtain excellent dielectric strength, avoiding any possibility of re-plating at zero current crossing.
  • Such an arrangement of the radiator 46 is particularly effective for breaking the currents low intensities.
  • the gas flow through the tubular movable arcing contact 28 can be improved by incorporating a nozzle with convergent / divergent inside the sleeve 30.
  • the radiator of the cooling member 44 inside the coil 16 may well heard in various forms, as defined in the revendications.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)

Description

L'invention est relative à un disjoncteur à autoexpansion et à arc tournant logé à l'intérieur d'une enveloppe étanche remplie de gaz isolant à rigidité diélectrique élevée, notamment de l'hexafluorure de soufre, ladite enveloppe renfermant une chambre de coupure comportant :

  • un contact d'arc fixe annulaire associé à une bobine électromagnétique de mise en rotation de l'arc, ladite bobine cylindrique étant agencée coaxialement autour du contact d'arc fixe,
  • un contact d'arc mobile creux coopérant avec le contact d'arc fixe de manière à occuper une position de fermeture, et une position d'ouverture,
  • et un canal d'échappement disposé entre le contact d'arc mobile creux, et l'enveloppe du disjoncteur.
The invention relates to a self-expanding circuit breaker with a rotating arc housed inside a sealed envelope filled with insulating gas with high dielectric strength, in particular sulfur hexafluoride, said envelope containing a breaking chamber comprising:
  • an annular fixed arcing contact associated with an electromagnetic coil for rotating the arc, said cylindrical coil being arranged coaxially around the fixed arcing contact,
  • a hollow movable arcing contact cooperating with the fixed arcing contact so as to occupy a closed position and an open position,
  • and an exhaust channel disposed between the hollow movable arcing contact, and the casing of the circuit breaker.

Un tel disjoncteur est connu du document EP-A-0 240 397.Such a circuit breaker is known from document EP-A-0 240 397.

L'extinction de l'arc dans les disjoncteurs à autoexpansion résulte de l'écoulement de gaz s'établissant dans le canal d'échappement lors de l'apparition de l'arc à l'intérieur de la chambre de coupure. Lors de la coupure de courants de faibles intensités, l'accroissement modéré de la pression gazeuse peut provoquer une stagnation de gaz chauds au voisinage du contact d'arc fixe. Ces gaz chauds restent stockés dans une zone de la chambre de coupure, qui n'est pas parcourue par l'écoulement gazeux, et on a constaté des phénomènes de reclaquage de l'arc au passage à zéro du courant.Arc extinction in self-expanding circuit breakers due to gas flow settling in the exhaust channel when the arc appears inside the breaking chamber. When cutting low currents, the increase moderate gas pressure may cause stagnation of hot gases in the vicinity of the fixed arcing contact. These hot gases remain stored in an area of the switching chamber, which is not traversed by the gas flow, and we observed phenomena of re-plating of the arc at zero current crossing.

L'objet de l'invention consiste à améliorer la coupure d'un disjoncteur à autoexpansion, indépendamment de l'intensité du courant à interrompre.The object of the invention is to improve the breaking of a self-expanding circuit breaker, regardless of the intensity of the current to be interrupted.

Le disjoncteur selon l'invention est caractérisé en ce que la chambre de coupure renferme de plus un organe de refroidissement agencé à l'intérieur de la bobine pour refroidir les gaz chauds au voisinage du contact d'arc fixe, ledit organe de refroidissement étant formé par un radiateur métallique assujetti au contact d'arc fixe. The circuit breaker according to the invention is characterized in that the breaking chamber contains in addition a cooling member arranged inside the coil to cool the gases hot in the vicinity of the fixed arcing contact, said cooling member being formed by a metal radiator subject to fixed arcing contact.

Selon un mode de réalisation préférentiel, le radiateur est accolé à la paroi interne d'un manchon tubulaire séparé de la bobine par un revêtement isolant, ledit manchon étant réalisé en matériau magnétique pour renforcer le champ magnétique dans la zone de formation de l'arc. La présence du radiateur à l'intérieur de la bobine limite toute stagnation de gaz chauds près du contact d'arc fixe.According to a preferred embodiment, the radiator is attached to the internal wall of a tubular sleeve separated from the coil by an insulating coating, said sleeve being made of magnetic material to strengthen the magnetic field in the area of arc formation. The presence of the radiator inside the coil limits any stagnation hot gas near the fixed arcing contact.

Selon une caractéristique de l'invention, le radiateur est équipé d'une pluralité d'ailettes pour optimiser la surface d'échange thermique avec la douille d'amenée de courant à la bobine.According to a characteristic of the invention, the radiator is equipped with a plurality of fins to optimize the heat exchange surface with the current supply socket at the coil.

Il en résulte un refroidissement efficace des gaz chauds au voisinage du contact d'arc fixe, ce qui évite toute possibilité de reclaquage au passage à zéro du courant.This results in efficient cooling of the hot gases in the vicinity of the fixed arcing contact, which avoids any possibility of re-plating on zero current crossing.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention, donné à titre d'exemple non limitatif, et représenté au dessin annexé, illustrant une vue schématique en coupe axiale de la chambre de coupure d'un disjoncteur à autoexpansion, lequel est représenté en position d'ouverture sur la demi-vue de gauche, et en position de fermeture sur la demi-vue de droite.Other advantages and characteristics will emerge more clearly from the description which follows. follow an embodiment of the invention, given by way of nonlimiting example, and shown in the accompanying drawing, illustrating a schematic view in axial section of the chamber of a self-expanding circuit breaker, which is shown in the open position on the left half-view, and in the closed position on the right half-view.

Sur la figure unique, une chambre de coupure 10 d'un disjoncteur à autoexpansion et à arc tournant, est logée à l'intérieur d'une enveloppe (non représentée) étanche remplie de gaz isolant, à rigidité diélectrique élevée, notamment de l'hexafluorure de soufre.In the single figure, a breaking chamber 10 of an autoexpansion and arc circuit breaker rotating, is housed inside a sealed envelope (not shown) filled with gas insulator, with high dielectric strength, in particular sulfur hexafluoride.

La chambre de coupure 10 renferme un contact d'arc fixe 12 annulaire monté du côté interne de la face frontale 14 antérieure d'une bobine 16 électromagnétique. La face postérieure 18 de la bobine 16 cylindrique est raccordée électriquement à une douille 20 conductrice d'amenée de courant traversant à étanchéité la paroi supérieure 22 de la chambre 10. Un revêtement isolant 24 est intercalé radialement entre la paroi latérale interne de la bobine 16, et un manchon 26 tubulaire en matériau magnétique, destiné à renforcer le champ magnétique dans la zone de formation de l'arc.The breaking chamber 10 contains a fixed annular arcing contact 12 mounted on the side internal of the front end face 14 of an electromagnetic coil 16. The face rear 18 of the cylindrical coil 16 is electrically connected to a socket 20 current supply conductor passing through sealing the upper wall 22 of the chamber 10. An insulating coating 24 is interposed radially between the side wall internal of the coil 16, and a tubular sleeve 26 of magnetic material, intended to strengthen the magnetic field in the arc formation area.

Le contact d'arc fixe 12 est formé par une piste annulaire coopérant par aboutement avec un contact d'arc mobile 28 porté par l'extrémité supérieure d'un manchon 30 tubulaire en matériau conducteur. Un ressort 32 de compression est associé coaxialement à l'extrémité inférieure du manchon 30, laquelle est équipée en plus d'un ergot de commande 34 susceptible d'être entraíné en translation par un contact glissant 36 assujetti à un tube 38 mobile conducteur. The fixed arcing contact 12 is formed by an annular track cooperating by abutment with a movable arcing contact 28 carried by the upper end of a tubular sleeve 30 in conductive material. A compression spring 32 is coaxially associated with the end lower of the sleeve 30, which is additionally equipped with a control lug 34 likely to be driven in translation by a sliding contact 36 subject to a tube 38 mobile driver.

Le tube 38 mobile traverse à étanchéité un orifice 40 ménagé dans un isolateur 42 d'obturation de la chambre 10. L'intérieur de la chambre de coupure 10 communique avec le volume d'expansion de l'enveloppe du disjoncteur à travers un canal d'échappement 43 délimité par le manchon 30 creux, de manière à engendrer un écoulement gazeux en cas d'augmentation de pression occasionnée par la rotation de l'arc.The movable tube 38 passes through a sealing hole 40 formed in an insulator 42 for closing the chamber 10. The interior of the interrupting chamber 10 communicates with the volume of expansion of the casing of the circuit breaker through an exhaust channel 43 delimited by the hollow sleeve 30, so as to generate a gas flow in the event pressure increase caused by the rotation of the arc.

A l'intérieur de la bobine 16 se trouve un organe de refroidissement, désigné par le repère général 44, et destiné à refroidir les gaz chauds se trouvant au voisinage du contact d'arc fixe 12. L'organe de refroidissement 44 de préférence métallique, est conformé en radiateur 46 accolé en contact thermique avec la paroi cylindrique interne du manchon 26, et prenant appui sur le contact d'arc fixe 12. Le radiateur 46 est avantageusement équipé d'ailettes 48 annulaires pour optimiser la surface d'échange thermique avec le milieu gazeux environnant.Inside the coil 16 is a cooling member, designated by the reference general 44, and intended to cool the hot gases in the vicinity of the arcing contact fixed 12. The cooling member 44, preferably metallic, is shaped as radiator 46 attached in thermal contact with the internal cylindrical wall of the sleeve 26, and bearing on the fixed arcing contact 12. The radiator 46 is advantageously equipped 48 annular fins to optimize the heat exchange surface with the gaseous medium surrounding.

La présence du radiateur 46 à l'intérieur de la bobine 16 limite toute stagnation de gaz chauds près du contact d'arc fixe 12, c'est à dire dans la première partie de la zone de formation d'arc qui n'est pas parcourue par l'écoulement gazeux. L'arc est éteint normalement par l'écoulement gazeux s'établissant à travers le manchon 30 tubulaire de support du contact d'arc mobile 28, constituant la deuxième partie de la zone de formation d'arc.The presence of the radiator 46 inside the coil 16 limits any stagnation of gas hot near the fixed arcing contact 12, i.e. in the first part of the arc formation which is not traversed by the gas flow. The arc is extinguished normally by the gas flow established through the tubular sleeve 30 of support of the movable arcing contact 28, constituting the second part of the formation zone arc.

Le refroidissement efficace des gaz chauds au voisinage du contact d'arc fixe 12 contribue à améliorer l'extinction de l'arc et à obtenir une excellente tenue diélectrique, en évitant toute possibilité de reclaquage au passage à zéro du courant.The efficient cooling of the hot gases in the vicinity of the fixed arcing contact 12 contributes to improve the arc extinction and obtain excellent dielectric strength, avoiding any possibility of re-plating at zero current crossing.

Un tel agencement du radiateur 46 est particulièrement efficace pour la coupure de courants de faibles intensités.Such an arrangement of the radiator 46 is particularly effective for breaking the currents low intensities.

L'écoulement gazeux à travers le contact d'arc mobile 28 tubulaire peut être amélioré en incorporant une tuyère avec convergent/divergent à l'intérieur du manchon 30.The gas flow through the tubular movable arcing contact 28 can be improved by incorporating a nozzle with convergent / divergent inside the sleeve 30.

Le radiateur de l'organe de refroidissement 44 à l'intérieur de la bobine 16 peut bien entendu se présenter sous diverses formes de réalisations, comme défini dans les revendications.The radiator of the cooling member 44 inside the coil 16 may well heard in various forms, as defined in the revendications.

Claims (4)

  1. A circuit breaker with self-extinguishing expansion and rotating arc housed inside a tightly sealed enclosure filled with insulating gas of high dielectric strength, notably sulphur hexafluoride, said enclosure containing an extinguishing chamber (10) comprising :
    an annular stationary arcing contact (12) associated to an electromagnetic coil (16) for rotation of the arc, said cylindrical coil being arranged coaxially around the stationary arcing contact (12),
    a hollow movable arcing contact (28) cooperating with the stationary arcing contact (12) so as to occupy a closed position and an open position,
    and an exhaust channel (43) arranged between the hollow movable arcing contact (28) and the circuit breaker enclosure.
    characterized in that the extinguishing chamber (10) contains in addition a cooling component (44) arranged inside the coil (16) to cool the hot gases near the stationary arcing contact (12), said cooling component being formed by a metallic heat sink (46) securedly united to the stationary arcing contact (12).
  2. The self-extinguishing expansion circuit breaker according to claim 1, characterized in that the heat sink (46) is adjoined to the internal wall of a tubular bushing (26) separated from the coil (16) by an insulating coating (24), said bushing (26) being made of magnetic material to strengthen the magnetic field in the arc formation zone.
  3. The self-extinguishing expansion circuit breaker according to claim 1 or 2, characterized in that the heat sink (46) is equipped with a plurality of fins (48) to optimise the heat exchange surface with the surrounding gas medium.
  4. The self-extinguishing expansion circuit breaker according to claim 1 or 2, characterized in that the stationary arcing contact (12) is formed by an annular track situated on the internal edge of the front face (14) of the coil (16), and that the movable arcing contact (28) is biased by a spring (32) into abutment against the stationary arcing contact (12).
EP19960103750 1995-03-22 1996-03-10 Self-blast circuit breaker with rotating arc Expired - Lifetime EP0734035B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9503569A FR2732157B1 (en) 1995-03-22 1995-03-22 GAS CIRCUIT BREAKER HAVING A SELF-EXPANSION AND ROTATING ARC CHAMBER
FR9503569 1995-03-22

Publications (2)

Publication Number Publication Date
EP0734035A1 EP0734035A1 (en) 1996-09-25
EP0734035B1 true EP0734035B1 (en) 2001-08-29

Family

ID=9477450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960103750 Expired - Lifetime EP0734035B1 (en) 1995-03-22 1996-03-10 Self-blast circuit breaker with rotating arc

Country Status (5)

Country Link
EP (1) EP0734035B1 (en)
CN (1) CN1068962C (en)
DE (1) DE69614738T2 (en)
ES (1) ES2161933T3 (en)
FR (1) FR2732157B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774213B1 (en) * 1998-01-27 2000-03-10 Schneider Electric Ind Sa CUTTING CHAMBER OF A SELF-EXPANDING CIRCUIT BREAKER AND A THERMOPLASTIC RESIN ENCLOSURE
DE10221576B4 (en) * 2002-05-08 2006-06-01 Siemens Ag Electrical switching device with a cooling device
EP1675145A1 (en) * 2004-12-23 2006-06-28 ABB Technology AG High power circuit breaker with sealing against hot arcing gasses
CN101120423B (en) * 2004-12-24 2010-06-23 Abb技术有限公司 Generator switch having improved switching capacity
CN102543553A (en) * 2011-12-09 2012-07-04 沈阳工业大学 SF6 circuit-breaker gyromagnetic air compression type arc extinguishing chamber structure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE906236C (en) * 1943-08-10 1954-03-11 Voigt & Haeffner Ag High voltage switch
JPS57170233U (en) * 1981-04-20 1982-10-26
FR2596578B1 (en) * 1986-03-28 1994-05-06 Merlin Et Gerin ELECTRIC CIRCUIT BREAKER WITH SELF-EXPANSION AND ROTATING ARC
CN2055987U (en) * 1989-01-03 1990-04-11 航空航天工业部国营燎原机械厂 Indoor high-pressure vacumm circuit breaker
FR2977170B1 (en) * 2011-06-29 2013-08-09 Cie Engrenages Et Reducteurs Messian Durand DRIVE DEVICE FOR MILLING MACHINE AND CORRESPONDING MILL

Also Published As

Publication number Publication date
FR2732157A1 (en) 1996-09-27
EP0734035A1 (en) 1996-09-25
DE69614738D1 (en) 2001-10-04
DE69614738T2 (en) 2002-07-04
ES2161933T3 (en) 2001-12-16
CN1068962C (en) 2001-07-25
FR2732157B1 (en) 1997-05-09
CN1138207A (en) 1996-12-18

Similar Documents

Publication Publication Date Title
EP0734035B1 (en) Self-blast circuit breaker with rotating arc
EP0240397A1 (en) Self-blast electrical circuit breaker with a rotating arc
FR2638564A1 (en) HIGH VOLTAGE CIRCUIT BREAKER WITH DIELECTRIC GAS UNDER PRESSURE
EP0334181B1 (en) High-tension switch with a reduced driving energy
EP0380907B2 (en) High and medium voltage gas blast circuit breaker
FR2576144A1 (en) HIGH VOLTAGE, COMPRESSED GAS, LOW-ENERGY CIRCUIT BREAKER
EP0768692B1 (en) Autoexpansion circuit breaker with insulating gas
EP0037765A1 (en) Circuit interrupter with an arc rotated by a permanent magnet
FR2610763A1 (en) Circuit breaker with low actuating energy
EP0406794B1 (en) High or middle tension circuit breaker
EP0515267B1 (en) Gas-blast load-break middle and high voltage switch
FR2479553A1 (en) Circuit breaker with combined magnetic and pneumatic arc quenching - uses magnetic coil for arc rotation and conductive screen preventing pre-ionisation of expansion gas
EP0456025A1 (en) High voltage circuit interrupter with arc in series
EP0078719B1 (en) Self-blast switch with permanent magnet
EP0064425B1 (en) Interrupter with rotating arc in an insulating gas
EP0101371B1 (en) Electrical switch with rotating arc
FR2460537A1 (en) Gas filled circuit breaker - uses magnetic fields, pressurised gas, and thermal expansion of gas heated by arc to interrupt arc
FR2663458A1 (en) MINIATURE ELECTRIC CIRCUIT BREAKER WITH CUTTING GAS EXHAUST.
FR2640420A2 (en) High-voltage circuit breaker with low operating energy
FR2808118A1 (en) SELF-BLOWING SWITCH WITH A TWO-VOLUME CUT-OFF CHAMBER
CH681751A5 (en) High voltage circuit breaker
JP2522244B2 (en) Gas switch
FR2694987A1 (en) High voltage circuit breaker using compressed dielectric gas - has moving assembly which compresses gas with additional volume within piston connected to compression volume by valve
FR2774805A1 (en) MEDIUM OR HIGH VOLTAGE CIRCUIT BREAKER HAVING AN IMPROVED DIELECTRIC HOLD CUTTING CHAMBER
FR2711012A1 (en) Circuit breaker with improved arc extinction chamber.

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): DE ES GB IT

17P Request for examination filed

Effective date: 19970313

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCHNEIDER ELECTRIC HIGH VOLTAGE SA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20001130

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES GB IT

REF Corresponds to:

Ref document number: 69614738

Country of ref document: DE

Date of ref document: 20011004

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20011009

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2161933

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020310

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020311

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020310

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030410

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050310