EP0360367B1 - 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
EP0360367B1
EP0360367B1 EP89250036A EP89250036A EP0360367B1 EP 0360367 B1 EP0360367 B1 EP 0360367B1 EP 89250036 A EP89250036 A EP 89250036A EP 89250036 A EP89250036 A EP 89250036A EP 0360367 B1 EP0360367 B1 EP 0360367B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
housing
low
drive device
voltage power
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
EP89250036A
Other languages
German (de)
English (en)
Other versions
EP0360367A2 (fr
EP0360367A3 (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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp 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 plastic housing having two housing parts butt-jointed along a joint, with fixed and movable switching contacts and with a drive device for opening and closing the switch contacts, and with a wall part inserted on the joint between the housing parts for separating the drive device from the switching contacts, the partition having at least one passage opening for a coupling member for connecting the switching contacts to the drive device.
  • a circuit breaker of this type is known from US-A-2 989 604.
  • An outlet channel for switching gases is not provided because the switching gases are deliberately intended to remain within the switch housing. However, this is associated with a sharp increase in the pressure in the switch housing. It also requires the switching gases to spread in the direction of the flexible current band on the contact lever in order to protect the current band against damage from high temperatures. Obviously, such protection is all the more difficult to implement, the greater the switching capacity of a circuit breaker and thus the larger the quantity of switching gases and the higher their temperature.
  • 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 reduce the probability due to its low dielectric strength of a flashover between the neighboring poles of the circuit breaker.
  • 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 propagation 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 pressure rise in the housing of the circuit breaker is limited because channels leading to the outside are provided, which is known per se. Due to the fact that the discharge channels are arranged in the partition, the pressure at the passage openings for the coupling members to the switching contacts is reduced particularly effectively. The risk of damage or contamination of drive and insulating parts is therefore correspondingly low.
  • Figure 1 is a perspective view of the housing of a low voltage circuit breaker.
  • Figure 2 is a front perspective view of a channeled partition.
  • FIG. 3 shows the partition according to FIG. 2 with the opposite viewing direction.
  • FIG. 4 shows a section through the housing according to FIG. 1 with the partition wall inserted.
  • FIG. 1 shows an insulating molded-material 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 fastening means, 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 relative 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 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 overpressure which arises during switching.
  • the partition 20 has a wall region 24, on which holes 26 are provided for receiving fastening parts, which are used for aligning and fastening 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 additionally 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 drain 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 area 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

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Casings For Electric Apparatus (AREA)
  • Gas-Insulated Switchgears (AREA)

Claims (1)

  1. Disjoncteur basse tension comportant un boîtier moulé (10) comprenant deux parties (12,14) réunies en aboutement le long d'un joint de séparation (16), des contacts de coupure fixe et mobile et un dispositif d'entraînement pour ouvrir et fermer les contacts de coupure, ainsi qu'un élément de paroi (20) inséré au niveau du joint de séparation (16) entre les parties (12,14) du boîtier et servant à séparer le dispositif d'entraînement (B) des contacts de coupure (A), la paroi de séparation (20) possédant au moins une ouverture de passage (40) pour un organe d'accouplement servant à relier les contacts de coupure (A) au dispositif d'entraînement (B),
    caractérisé par le fait que la paroi de séparation (20) comporte des canaux de tirage (32) servant à transférer des gaz de coupure à l'air libre, et que des moyens (42) servant à refroidir les gaz de coupure sont disposés dans les canaux (32).
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
US07/246,484 US4876424A (en) 1988-09-19 1988-09-19 Barrier with a venting scheme for a circuit breaker
US246484 1988-09-19

Publications (3)

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

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268831B (en) * 1992-07-17 1996-04-24 Square D Co Improvements relating to circuit breakers
US5457296A (en) * 1992-07-17 1995-10-10 Square D Company Circuit breaker enclosure
DE4410108C2 (de) * 1994-03-21 1996-08-22 Siemens Ag Lichtbogenlöschkammer mit drei Barrieren für den Durchtritt von Lichtbogengasen
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

Family Cites Families (18)

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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
CH278119A (de) * 1949-12-30 1951-09-30 Ag Weber Selbstschalter.
US2989604A (en) * 1957-04-04 1961-06-20 Gen Electric Circuit breaker
NL272243A (fr) * 1960-12-07
FR1485356A (fr) * 1965-07-03 1967-06-16 Busch Jaeger Duerener Metall Disjoncteur d'installation avec déclenchement magnétique et thermique
US3553613A (en) * 1969-07-23 1971-01-05 Square D Co Magnet and movable contact support structure for a multiple contact electromagnetically actuated switch
US4088973A (en) * 1976-04-28 1978-05-09 Gould Inc. Unitized combination starter
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
US4598186A (en) * 1983-05-09 1986-07-01 Square D Company Vent arrangement for high amperage molded case circuit breaker
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.
EP0225207B1 (fr) * 1985-10-31 1991-05-15 Merlin Gerin Chaîne cinématique de transmission entre le mécanisme de commande et les pôles d'un disjoncteur électrique à boîtier isolant moulé

Also Published As

Publication number Publication date
DE58909184D1 (de) 1995-05-24
ES2070899T3 (es) 1995-06-16
US4876424A (en) 1989-10-24
EP0360367A2 (fr) 1990-03-28
CA1331776C (fr) 1994-08-30
JPH02197023A (ja) 1990-08-03
EP0360367A3 (fr) 1991-11-06
JP2782462B2 (ja) 1998-07-30

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