EP0734035A1 - Selbstbeblasender Druckgasschalter mit rotierendem Lichtbogen - Google Patents

Selbstbeblasender Druckgasschalter mit rotierendem Lichtbogen Download PDF

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Publication number
EP0734035A1
EP0734035A1 EP96103750A EP96103750A EP0734035A1 EP 0734035 A1 EP0734035 A1 EP 0734035A1 EP 96103750 A EP96103750 A EP 96103750A EP 96103750 A EP96103750 A EP 96103750A EP 0734035 A1 EP0734035 A1 EP 0734035A1
Authority
EP
European Patent Office
Prior art keywords
arcing contact
coil
circuit breaker
self
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.)
Granted
Application number
EP96103750A
Other languages
English (en)
French (fr)
Other versions
EP0734035B1 (de
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 SE
Schneider Electric Industries SAS
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 SE, Schneider Electric Industries SAS filed Critical Schneider Electric SE
Publication of EP0734035A1 publication Critical patent/EP0734035A1/de
Application granted granted Critical
Publication of EP0734035B1 publication Critical patent/EP0734035B1/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
    • H01H33/98—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

  • the object of the invention consists in improving the breaking of a circuit breaker with autoexpansion, independently of the intensity of the current to be interrupted.
  • the circuit breaker according to the invention is characterized in that the breaking chamber also contains a cooling member arranged inside the coil to cool the hot gases 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 reinforce the magnetic field in the zone of formation of the arc .
  • the presence of the radiator inside the coil limits any stagnation of hot gases near the fixed arcing contact.
  • the radiator is equipped with a plurality of fins to optimize the heat exchange surface with the socket for supplying current to the coil.
  • a breaking chamber 10 of a circuit breaker with autoexpansion and rotating arc is housed inside a sealed envelope (not shown) filled with insulating gas, with high dielectric strength, in particular of sulfur hexafluoride.
  • the breaking chamber 10 contains a fixed annular arcing contact 12 mounted on the internal side of the front end face 14 of an electromagnetic coil 16.
  • the rear face 18 of the cylindrical coil 16 is electrically connected to a conductive sleeve 20 for supplying current sealingly passing through the upper wall 22 of the chamber 10.
  • An insulating coating 24 is inserted radially between the internal lateral wall of the coil 16 , and a tubular sleeve 26 of magnetic material, intended to reinforce the magnetic field in the zone of formation of the arc.
  • 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 of conductive material.
  • a compression spring 32 is associated coaxially with the lower end of the sleeve 30, which is further equipped with a control lug 34 capable of being driven in translation by a sliding contact 36 subject to a movable conductive tube 38.
  • the movable tube 38 passes through a sealing hole 40 made in an isolator 42 for closing the chamber 10.
  • the interior of the breaking chamber 10 communicates with the expansion volume of the casing of the circuit breaker through a channel d exhaust 43 delimited by the hollow sleeve 30, so as to generate a gas flow in the event of an increase in pressure caused by the rotation of the arc.
  • the cooling member 44 preferably metallic , is shaped as a radiator 46 joined 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 with annular fins 48 to optimize the heat exchange surface with the surrounding gaseous medium.
  • the presence of the radiator 46 inside the coil 16 limits any stagnation of hot gases near the fixed arcing contact 16, that is to say in the first part of the arcing zone which is not traversed by the gas flow.
  • the arc is normally extinguished by the gas flow establishing itself through the tubular sleeve 30 for supporting the movable arcing contact 28, constituting the second part of the arcing zone.
  • the effective cooling of the hot gases in the vicinity of the fixed arcing contact 12 contributes to improving the extinction of the arcing and to obtaining an excellent dielectric strength, avoiding any possibility of reclapling on the passage of the current to zero.
  • Such an arrangement of the radiator 46 is particularly effective for breaking low-intensity currents.
  • 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 can of course be in various embodiments.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)
EP19960103750 1995-03-22 1996-03-10 Selbstbeblasender Druckgasschalter mit rotierendem Lichtbogen Expired - Lifetime EP0734035B1 (de)

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 true EP0734035A1 (de) 1996-09-25
EP0734035B1 EP0734035B1 (de) 2001-08-29

Family

ID=9477450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960103750 Expired - Lifetime EP0734035B1 (de) 1995-03-22 1996-03-10 Selbstbeblasender Druckgasschalter mit rotierendem Lichtbogen

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0932177A1 (de) * 1998-01-27 1999-07-28 Schneider Electric Sa Lichtbogenkammer für einen Autoexpansionsschalter, und internes Gehäuse aus thermoplastischem Harz

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
ATE389943T1 (de) * 2004-12-24 2008-04-15 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

Citations (3)

* 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
EP0064425A2 (de) * 1981-04-20 1982-11-10 Merlin Gerin Schalter mit in einem Isoliergas rotierenden Lichtbogen
EP0240397A1 (de) * 1986-03-28 1987-10-07 Merlin Gerin Selbstbeblasender elektrischer Lastschalter mit rotierendem Lichtbogen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (3)

* 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
EP0064425A2 (de) * 1981-04-20 1982-11-10 Merlin Gerin Schalter mit in einem Isoliergas rotierenden Lichtbogen
EP0240397A1 (de) * 1986-03-28 1987-10-07 Merlin Gerin Selbstbeblasender elektrischer Lastschalter mit rotierendem Lichtbogen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0932177A1 (de) * 1998-01-27 1999-07-28 Schneider Electric Sa Lichtbogenkammer für einen Autoexpansionsschalter, und internes Gehäuse aus thermoplastischem Harz
FR2774213A1 (fr) * 1998-01-27 1999-07-30 Schneider Electric Ind Sa Chambre de coupure d'un disjoncteur a auto-expansion et a enveloppe a resine thermoplastique
AU738593B2 (en) * 1998-01-27 2001-09-20 Schneider Electric Sa An extinguishing chamber of a circuit breaker with self-extinguishing expansion, and a thermoplastic resin enclosure

Also Published As

Publication number Publication date
ES2161933T3 (es) 2001-12-16
FR2732157B1 (fr) 1997-05-09
CN1138207A (zh) 1996-12-18
FR2732157A1 (fr) 1996-09-27
DE69614738T2 (de) 2002-07-04
CN1068962C (zh) 2001-07-25
EP0734035B1 (de) 2001-08-29
DE69614738D1 (de) 2001-10-04

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