EP0734035B1 - Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant - Google Patents

Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant Download PDF

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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)
English (en)
French (fr)
Other versions
EP0734035A1 (fr
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/fr
Application granted granted Critical
Publication of EP0734035B1 publication Critical patent/EP0734035B1/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
    • H01H33/98—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)
EP19960103750 1995-03-22 1996-03-10 Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant Expired - Lifetime EP0734035B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9503569A FR2732157B1 (fr) 1995-03-22 1995-03-22 Disjoncteur a gaz equipe d'une chambre a autoexpansion et a arc tournant
FR9503569 1995-03-22

Publications (2)

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

Family

ID=9477450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960103750 Expired - Lifetime EP0734035B1 (fr) 1995-03-22 1996-03-10 Disjoncteur à gaz équipé d'une chambre à autoexpansion et à arc tournant

Country Status (5)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774213B1 (fr) * 1998-01-27 2000-03-10 Schneider Electric Ind Sa Chambre de coupure d'un disjoncteur a auto-expansion et a enveloppe a resine thermoplastique
DE10221576B4 (de) * 2002-05-08 2006-06-01 Siemens Ag Elektrisches Schaltgerät mit einer Kühleinrichtung
EP1675145A1 (de) * 2004-12-23 2006-06-28 ABB Technology AG Hochleistungsschalter mit Dichtung gegen Heissgas
EP1829077B2 (de) * 2004-12-24 2011-03-23 ABB Technology AG Generatorschalter mit verbesserter schaltleistung
CN102543553A (zh) * 2011-12-09 2012-07-04 沈阳工业大学 Sf6断路器旋磁压气式灭弧室结构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE906236C (de) * 1943-08-10 1954-03-11 Voigt & Haeffner Ag Hochspannungsschalter
JPS57170233U (zh) * 1981-04-20 1982-10-26
FR2596578B1 (fr) * 1986-03-28 1994-05-06 Merlin Et Gerin Disjoncteur electrique a autoexpansion et a arc tournant
CN2055987U (zh) * 1989-01-03 1990-04-11 航空航天工业部国营燎原机械厂 户内高压真空断路器
FR2977170B1 (fr) * 2011-06-29 2013-08-09 Cie Engrenages Et Reducteurs Messian Durand Dispositif d'entrainement pour broyeur, et broyeur correspondant

Also Published As

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

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