EP0360367A2 - Disjoncteur de puissance à basse tension avec une partie de la paroi pour dévier les gaz d'arc - Google Patents

Disjoncteur de puissance à basse tension avec une partie de la paroi pour dévier les gaz d'arc Download PDF

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Publication number
EP0360367A2
EP0360367A2 EP89250036A EP89250036A EP0360367A2 EP 0360367 A2 EP0360367 A2 EP 0360367A2 EP 89250036 A EP89250036 A EP 89250036A EP 89250036 A EP89250036 A EP 89250036A EP 0360367 A2 EP0360367 A2 EP 0360367A2
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
partition
switching
housing
low
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
EP89250036A
Other languages
German (de)
English (en)
Other versions
EP0360367A3 (fr
EP0360367B1 (fr
Inventor
Clifford A. Buxton
David A. Leone
W. Dale Robbins
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0360367A2 publication Critical patent/EP0360367A2/fr
Publication of EP0360367A3 publication Critical patent/EP0360367A3/fr
Application granted granted Critical
Publication of EP0360367B1 publication Critical patent/EP0360367B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to a low-voltage circuit breaker with a molded housing which has two housing parts butt-jointed to one another, with fixed and movable switching contacts and with a drive device for opening and closing the switching contacts and with a wall part inserted between the housing parts for discharging switching gases.
  • a circuit breaker of this type has become known, for example, from US-A-4,598,186.
  • the wall part is provided with a number of passage openings, the size and spacing of which is adapted to a desired course of the extinguishing process of the switching arcs.
  • the removal of the hot ionized gases formed in particular in the interruption of high fault currents in a circuit breaker is essential for the reliable functioning of the circuit breaker.
  • the ionized gas in multipole circuit breakers can increase the likelihood of a flashover between the adjacent poles of the circuit breaker due to its low dielectric strength.
  • the switching gases can give rise to a flashover between the switching contacts of the circuit breaker and the associated drive device.
  • the invention is based on the object of limiting the spread of switching gases inside the circuit breaker in the direction of the drive device and adjacent poles. Furthermore, the removal of the switching gases from the housing of the circuit breaker to the outside is to be simplified.
  • the wall part is inserted at the joint between the housing parts and is designed as a partition for separating the drive device from the switching contacts.
  • the partition extends over all poles of the circuit breaker, is easy to insert when mounting the housing parts and improves the strength of the entire housing due to this arrangement.
  • the partition creates two separate spaces in the housing, which are intended to accommodate a drive device and the switch contact arrangements. At least one passage opening for a coupling member for connecting the movable switching contacts to the drive device can be provided in the partition.
  • the partition can have an essential additional function in that channels for guiding the switching gases are attached to the partition. Means for cooling the switching gases can also be arranged in these channels.
  • FIG. 1 shows an insulating molded-plastic housing 10 which has two housing parts 12 and 14.
  • the housing parts 12 and 14 abut along a parting line 16 and are in this position by suitable fasteners, for. B. bolts, which are inserted into openings 18 of the housing part 12.
  • the threaded parts of the bolts extend into corresponding threaded openings in the housing part 14.
  • the same arrangement as that shown on the side of the housing parts 12 and 14 shown in FIG. 1 is present the opposite, hidden side of the molding material housing 10.
  • a partition 20 is inserted between the housing parts 12 and 14, which is shown in two views in FIGS. 2 and 3.
  • the partition 20 has undercut end webs 22 which are received in correspondingly shaped recesses in the contact surfaces of the housing parts 12 and 14 as shown in FIG. 4.
  • the recesses are set back with respect to the outer surfaces of the molded-material housing 10, so that when the housing according to FIG. 1 is viewed, the end webs 22 are covered. Due to the undercut shape of the end webs 22, the partition wall 20 contributes to the mutual alignment of the side walls of the housing parts 12 and 14 and to their stiffening with respect to the internal excess pressure which arises during switching.
  • the partition 20 has a wall region 24 to which holes 26 are provided for receiving fastening parts which serve to align and fasten the partition 20 to the housing part 14.
  • the wall region 24 also contains a recess 28 in the region of the end webs 22, which contribute to the alignment of the partition 20 between the housing parts 12 and 14.
  • further holes 26 are provided in the wall area 24, which are located between two parallel webs 30 in each case.
  • the webs interact with phase partitions of the housing part 14, not shown. The steps between the webs 30 and the phase partitions interacting with them also improve the insulation between the adjacent poles of the circuit breaker.
  • inclined wall areas 36 and laterally delimiting wall areas 34 which terminate with the webs 30, are provided to form extraction channels 32.
  • the discharge channels 32 along a path designated by C the outflow of Enable switching gases that are formed in the space A provided for the switching contacts in the molded plastic housing 10.
  • the adjoining space B which is separated from the housing space A by the partition 20, is provided for the drive device for the switching contacts in the housing space A.
  • two openings 40 are provided in the partition 20 according to FIG. 3, which are flanked by projections 44 on the opposite side of the partition 20 shown in FIG are arranged approximately at right angles to the wall region 24 and have the task of shielding the coupling members extending through the openings 40.
  • the exhaust ducts 32 are provided with metal grids 42.
  • the grids 42 contribute to further cooling and ionization and thus to a reduction in the energy contained in the switching gases.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Casings For Electric Apparatus (AREA)
  • Gas-Insulated Switchgears (AREA)
EP89250036A 1988-09-19 1989-09-13 Disjoncteur de puissance à basse tension avec une partie de la paroi pour dévier les gaz d'arc Expired - Lifetime EP0360367B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US246484 1988-09-19
US07/246,484 US4876424A (en) 1988-09-19 1988-09-19 Barrier with a venting scheme for a circuit breaker

Publications (3)

Publication Number Publication Date
EP0360367A2 true EP0360367A2 (fr) 1990-03-28
EP0360367A3 EP0360367A3 (fr) 1991-11-06
EP0360367B1 EP0360367B1 (fr) 1995-04-19

Family

ID=22930878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250036A Expired - Lifetime EP0360367B1 (fr) 1988-09-19 1989-09-13 Disjoncteur de puissance à basse tension avec une partie de la paroi pour dévier les gaz d'arc

Country Status (6)

Country Link
US (1) US4876424A (fr)
EP (1) EP0360367B1 (fr)
JP (1) JP2782462B2 (fr)
CA (1) CA1331776C (fr)
DE (1) DE58909184D1 (fr)
ES (1) ES2070899T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410108A1 (de) * 1994-03-21 1995-09-28 Siemens Ag Lichtbogenlöschkammer mit drei Barrieren für den Durchtritt von Lichtbogengasen

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5457296A (en) * 1992-07-17 1995-10-10 Square D Company Circuit breaker enclosure
GB2268831B (en) * 1992-07-17 1996-04-24 Square D Co Improvements relating to circuit breakers
JP3166890B2 (ja) * 1994-05-24 2001-05-14 富士電機株式会社 回路遮断器の消弧装置
DE29612636U1 (de) * 1996-07-15 1997-08-14 Siemens AG, 80333 München Lichtbogenlöschkammer für Niederspannungs-Leistungsschalter
DE19638948A1 (de) * 1996-09-16 1998-03-19 Siemens Ag Fahrbar angeordneter Leistungsschalter mit einem Ausblasdämpfer
DE29617358U1 (de) * 1996-09-24 1998-01-29 Siemens AG, 80333 München Lichtbogenlöschkammer für Niederspannungs-Leistungsschalter
US6005207A (en) * 1997-09-23 1999-12-21 Siemens Energy & Automation, Inc. Multi-part circuit breaker housing
US5910757A (en) * 1998-03-25 1999-06-08 Square D Company Phase barrier for use in a multiphase circuit breaker
DE10036370B4 (de) * 2000-07-18 2009-07-09 Siemens Ag Lichtbogenlöscheinrichtung mit einem Aufsatz für Niederspannungs-Schaltgeräte
DE10049726A1 (de) * 2000-09-29 2002-04-11 Siemens Ag Kammerdeckelbefestigung für Lichtbogenlöschkammern für Niederspannungsschaltgeräte
NL1020581C2 (nl) * 2002-05-13 2003-11-14 Holec Holland Nv Schakelinstallatie voorzien van elektrisch isolerende barriÞre.
DE20215343U1 (de) * 2002-09-30 2003-01-30 Siemens AG, 80333 München Anordnung mit einem Niederspannungs-Leistungsschalter und einem mit einem Trageelement versehenen Schaltgasdämpfer für den Niederspannungs-Leistungsschalter
US6762389B1 (en) 2003-04-17 2004-07-13 Eaton Corporation Gas discharge filter for electrical switching apparatus
DE102005043396A1 (de) * 2005-09-08 2007-03-15 Siemens Ag Auswechselbare Löschblechkassette für einen Leistungsschalter sowie Leistungsschalter mit auswechselbarer Löschblechkassette
US7586058B2 (en) * 2007-04-27 2009-09-08 Eaton Corporation Electrical switching apparatus, and ARC hood assembly and chimney therefor
US20090185332A1 (en) * 2008-01-23 2009-07-23 Coomer Jarrod L Cassette assembly and panel assembly therefor
US7974078B2 (en) * 2008-01-23 2011-07-05 Eaton Corporation Electrical enclosure assembly having venting system
US8922977B2 (en) * 2012-04-20 2014-12-30 Schneider Electric USA, Inc. Passive arc management system with a flue chamber
US9805898B2 (en) * 2015-07-31 2017-10-31 Eaton Corporation Fuse arc gas baffle with arc resistant fuse assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH278119A (de) * 1949-12-30 1951-09-30 Ag Weber Selbstschalter.
US2989604A (en) * 1957-04-04 1961-06-20 Gen Electric Circuit breaker
FR1485356A (fr) * 1965-07-03 1967-06-16 Busch Jaeger Duerener Metall Disjoncteur d'installation avec déclenchement magnétique et thermique
DE2719053A1 (de) * 1976-04-28 1977-11-10 Gould Inc Motoranlasser
US4598186A (en) * 1983-05-09 1986-07-01 Square D Company Vent arrangement for high amperage molded case circuit breaker

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA537190A (fr) * 1957-02-12 Toth Julius Disjoncteur
US2408352A (en) * 1944-03-24 1946-09-24 Gen Electric Gas cooling arrangement for circuit interrupters
NL272243A (fr) * 1960-12-07
US3553613A (en) * 1969-07-23 1971-01-05 Square D Co Magnet and movable contact support structure for a multiple contact electromagnetically actuated switch
US4075446A (en) * 1976-07-15 1978-02-21 Heinemann Electric Company Circuit breaker arc venting screen
US4242577A (en) * 1976-12-30 1980-12-30 Westinghouse Electric Corp. Circuit breaker having insulation barrier
FR2451097A1 (fr) * 1979-02-07 1980-10-03 Terasaki Denki Sangyo Kk Interrupteur de circuit electrique a air, mecanisme et boitier
US4229630A (en) * 1980-03-17 1980-10-21 Westinghouse Electric Corp. Circuit breaker utilizing improved arc chambers
US4484045A (en) * 1982-08-16 1984-11-20 General Electric Company Molded case circuit breaker having improved arc resistant properties
JPS60175335A (ja) * 1984-02-20 1985-09-09 富士電機株式会社 回路遮断器
US4581511A (en) * 1984-09-28 1986-04-08 Westinghouse Electric Corp. Molded case circuit breaker with an improved internal venting system
FR2583571B1 (fr) * 1985-06-12 1994-02-18 Merlin Et Gerin Disjoncteur basse tension a coupure amelioree.
DE3679291D1 (de) * 1985-10-31 1991-06-20 Merlin Gerin Kinematische uebertragungskette zwischen dem steuermechanismus und den polen eines elektrischen lastschalters mit einem gespritzten isoliergehaeuse.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH278119A (de) * 1949-12-30 1951-09-30 Ag Weber Selbstschalter.
US2989604A (en) * 1957-04-04 1961-06-20 Gen Electric Circuit breaker
FR1485356A (fr) * 1965-07-03 1967-06-16 Busch Jaeger Duerener Metall Disjoncteur d'installation avec déclenchement magnétique et thermique
DE2719053A1 (de) * 1976-04-28 1977-11-10 Gould Inc Motoranlasser
US4598186A (en) * 1983-05-09 1986-07-01 Square D Company Vent arrangement for high amperage molded case circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410108A1 (de) * 1994-03-21 1995-09-28 Siemens Ag Lichtbogenlöschkammer mit drei Barrieren für den Durchtritt von Lichtbogengasen
US5756951A (en) * 1994-03-21 1998-05-26 Siemens Aktiengesellschaft Arc chute having three barriers for the passage of arc gasses

Also Published As

Publication number Publication date
CA1331776C (fr) 1994-08-30
JPH02197023A (ja) 1990-08-03
ES2070899T3 (es) 1995-06-16
JP2782462B2 (ja) 1998-07-30
US4876424A (en) 1989-10-24
EP0360367A3 (fr) 1991-11-06
EP0360367B1 (fr) 1995-04-19
DE58909184D1 (de) 1995-05-24

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