EP1876617A1 - Interrupteur électrique d'installation avec préchambre d'extinction d'arc, une tôle de conduction d'arc et un dispositif d'extinction d'arc à limitation de courant - Google Patents

Interrupteur électrique d'installation avec préchambre d'extinction d'arc, une tôle de conduction d'arc et un dispositif d'extinction d'arc à limitation de courant Download PDF

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Publication number
EP1876617A1
EP1876617A1 EP06013984A EP06013984A EP1876617A1 EP 1876617 A1 EP1876617 A1 EP 1876617A1 EP 06013984 A EP06013984 A EP 06013984A EP 06013984 A EP06013984 A EP 06013984A EP 1876617 A1 EP1876617 A1 EP 1876617A1
Authority
EP
European Patent Office
Prior art keywords
arc
installation device
guide rail
housing
main channel
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.)
Withdrawn
Application number
EP06013984A
Other languages
German (de)
English (en)
Inventor
Alexander Rab
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.)
ABB AG Germany
Original Assignee
ABB Patent GmbH
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 ABB Patent GmbH filed Critical ABB Patent GmbH
Priority to EP06013984A priority Critical patent/EP1876617A1/fr
Publication of EP1876617A1 publication Critical patent/EP1876617A1/fr
Withdrawn legal-status Critical Current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
    • H01H9/346—Details concerning the arc formation chamber
    • 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
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc

Definitions

  • the invention relates to an electrical installation device with at least one switching contact with a fixed and a movable contact piece between which an arc in an arc Vorschraum arises when switching off, which arc enters via Lichtbogenleitschienen in a current-limiting arc quenching device, in particular an arc splitter stack, according to the The preamble of claim 1.
  • the invention can be used for example in circuit breakers and motor protection switches.
  • Miniature circuit breakers and motor protection switches are used in the event of a fault to disconnect electrical lines that are loaded with high current overcurrents from the supply network.
  • a fixed and a movable contact piece are provided in an arc Vorschraum, which are connected to the respective terminals.
  • the connection terminals are usually located in a connection space, which is separated from the arc prechamber space by a terminal compartment separation.
  • an installation switching device such as the rear derailleur, release mechanism, fixed and movable contact piece, arc extinguishing device, connection terminals, etc.
  • This case has Front and rear front sides, a fastening side opposite this, a right and left narrow side and two broad sides.
  • an arc extinguishing arrangement for an electrical switching device which comprises a quenching chamber (in which a switching action between a fixed and a movable contact piece is generated an arc) and a plurality of arc quenching arc splitter stack in which the arc is guided over guide rails.
  • the invention has for its object to provide an electrical installation device with arc Vorschraum, arc guide rails and current-limiting arc-extinguishing device, which has a simplified structure with optimal operation.
  • the two wide sides of the housing are thus provided with inner recesses in a partial region of the arc prechamber space, so that the partial region delimited by the inner recesses has a reduced width compared with the remaining arc prechamber space.
  • a main channel may be formed, which receives from the arc quenching device with increased pressure escaping gases and continues in the direction from the output to the entrance of the arc quenching device that an acceleration of the gas flow from the origin of the arc results in the direction of the arc quenching device.
  • the housing broad sides lowered in the region of the inner recesses can have a three-dimensional structured surface contour, for example a waveform.
  • a three-dimensional structures can further optimize the gas flow.
  • the partial area of the arc prechamber space according to the invention extends with the inner recess between the switching contact with the contact pieces, the arc quenching device and the arc guide rail facing away from the fixed contact piece.
  • the main channel which receives and forwards the gases emerging from the arc quenching device, is formed between the housing transformations and one of the arc guide rails.
  • the main channel is formed in the region of the attachment side of the housing.
  • the main channel is formed between the arc quenching device itself and one of the arc guide rails, again preferably in the region of the attachment side of the housing.
  • the inventive and advantageous effect of the inner recesses is that the part of the housing broad sides which is lowered in this area has a similar effect on the gas flow in the arc pre-chamber space, as the pre-chamber plates known in the prior art. Namely, their effect is that due to the reduction in the width of the arc prechamber space caused by them, the flow velocity of the gas is increased there, whereby the arc is more rapidly driven into the arc quenching device.
  • the so-called circulating air principle is usually used. According to this principle, a backflow of the gas takes place from the exit of the arc quenching device into the arc pre-chamber space. In the known embodiment with Vorschplatten the circulating air is passed between the housing broadside and the Vorttingplatten.
  • the inventively provided gap between the arc guide rails and the edge of the inner recess allows a partial inflow of recycled gas through the gap into the arc pre-chamber space, which contributes to an accelerated extinction of the arc.
  • a further advantageous effects of the gap provided according to the invention lies in the fact that there is no direct contact between the arc guide rail and the edge of the inner recess or the housing broad side and thus no creepage distance can form. This increases the high-voltage strength of an installation device according to the invention.
  • the advantages achieved by the invention are, in particular, that the proposed measure accelerates the flow of gas from the place of origin of the arc in the direction of arc quenching device at the same time increased high voltage resistance, resulting in an accelerated extinction of the arc results.
  • the switching behavior is improved or the switch-off behavior is stabilized. Accordingly, caused by the arc in the switching device Entry of energy and thus limited thermal effects. Damage to components of the switching device due to impermissibly high thermal load (temperature increase) is prevented.
  • the structure of the switching device is simplified, since additional inserts, such as pre-chamber plates are dispensable. This involves cost savings (parts costs, assembly costs).
  • the main channel can open into a recirculating air channel, the opening of which then opens into the arc pre-chamber space.
  • the gap which according to the invention is formed between the edge of the inner recesses and an arc guide rail, can then advantageously be located in the area of the circulating air channel.
  • a further advantageous embodiment provides that it is bounded on one side by the connection space partition, and on the other side by an arc guide rail, as well as the edge of the inner recess and the gap formed between the two.
  • An equally advantageous embodiment of the invention in characterized in that the main channel opens into an exhaust duct, the exhaust opening opens into the terminal space, which is opposite to the arc quenching device.
  • the exhaust air opening can also open at a front-side housing wall, so that the exhaust duct directs the gas to the outside of the switching device.
  • an embodiment of an electrical installation device when the housing, at least in the region of the inner recesses, consists of thermoplastic.
  • Thermoplastic material is more exposed to the prevailing temperatures in the vicinity of the arc than other materials used in switchgear housings, for example, stronger than thermoset.
  • the resulting higher pressure is positive for a rapid quenching of the arc, on the other hand, this increased pressure is discharged through the main channel according to the invention.
  • Fig. 1 is a section along the broad side is shown by a switching device according to a first embodiment.
  • electrical installation device is expressly to the above-mentioned DE 102 42 310 A1 pointed.
  • Such a switching device 1 has an approximately cuboid, usually composed of two halves housing of an insulating plastic material, with a front front 101, a rear front 102, a mounting side 103, two broad sides 104 and two end or narrow sides 105 a and 105 b ,
  • connection means for connection to busbars and / or connection lines (input and output connections). Furthermore, it comprises an electromagnetic release for switching off short-circuit currents, a thermal release switch for overcurrent, a switch lock, a switch knob on the front front side 101 of the housing, at least one switch contact with at least one fixed and at least one movable switch contact piece, arc guide rails for guiding an arc from an arc pre-chamber space in a current-limiting arc extinguishing device, in particular an arc extinguishing package, as well as on the attachment side 103 of the housing mounting means for attachment to a hat profile support rail on. If more than one switching contact is provided, of course, arc quenching packages including arc guide rails are correspondingly multiple.
  • the two broad sides 104 of the housing are provided with inner recesses 22, which extend in the region between the switching contact with the contact pieces 8, 9, the arc quenching device 12 and in the remote in the fixed contact piece 9 arc guide rail 11 so that the formed between these inner recesses 22 Prechamber subspace 7a compared to the remaining arc Vorhuntraum 7 has a reduced width and thus a reduced cross-section.
  • FIG. 4 shows a section A-A (section line, see FIG. 1) through a switching device 1 provided with internal recesses 22,
  • FIG. 6 shows a section B-B (sectional line see FIG. 1 or FIG. 5).
  • the direction of the attachment side 103 is thus directed toward the arc guide rails, the arc quenching device 12 and the prechamber space 7.
  • the connection spaces 3 and 4, separated by the connection space partition 28, are only shown in section.
  • the dashed line 11a indicates the further course of the arc guide rail 11 parallel to the attachment side 103.
  • the inner recess 22 in the region of the pre-chamber subspace 7a is formed by partially lowering the housing broadside 104.
  • the lowered portion of the housing broadside forms two Vorkammmerraumabdeckplatten 106 which are connected by a circumferential side wall 24 with the remaining part of the housing broadside 104.
  • a main channel 19 is formed, which merges into a recirculating air duct 13, which is also below the arc guide respectively between the terminal compartment partition 28 and the arc guide rail 11.
  • gases exiting the arc quenching device 12 at elevated pressure may be conveyed into the arc prechamber space 7 where they enter via an orifice 14 near the arc origin, ie, a recirculating air gas flow from the arc quenching device 12 over the arc Main channel 19 and the recirculating air duct 13 back into the arc Vorhuntraum 7, which contributes to a flow optimization and leads to an accelerated transport of the arc in the direction of arc quenching and thus to an accelerated arc extinction.
  • FIG. 3 shows a section through a switching device 21 according to a third embodiment.
  • the main channel 19 does not open into a recirculating air duct 13, but only into the exhaust duct 17, which via the exhaust port 18 opens into the terminal compartment 3.
  • the proposed measure is a relatively high pressure difference between the gas pressure in the arc quenching device 12 on the one hand and the pressure of the outside atmosphere on the other hand used to accelerate the gas flow (and thus the arc). Movement) from the location of the arc generation to the arc quenching device 12 to achieve.
  • main channel 19 and the recirculating air channel 13 are formed by a defined distance between the arc guide rail and the housing wall.
  • the arc guide rail 11 itself may be partially formed in the form of a channel.
  • Figure 7 shows in the switching device 30, a variant of the embodiment, as shown in Figures 1,5 and 6.
  • the antechamber space cover plate 106 which results from the lowered part of the housing broad side in the region of the inner recess 22, has a wave-shaped or zigzag-shaped three-dimensional surface contour. As a result, the gas flow is again positively influenced.

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  • Arc-Extinguishing Devices That Are Switches (AREA)
EP06013984A 2006-07-06 2006-07-06 Interrupteur électrique d'installation avec préchambre d'extinction d'arc, une tôle de conduction d'arc et un dispositif d'extinction d'arc à limitation de courant Withdrawn EP1876617A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06013984A EP1876617A1 (fr) 2006-07-06 2006-07-06 Interrupteur électrique d'installation avec préchambre d'extinction d'arc, une tôle de conduction d'arc et un dispositif d'extinction d'arc à limitation de courant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06013984A EP1876617A1 (fr) 2006-07-06 2006-07-06 Interrupteur électrique d'installation avec préchambre d'extinction d'arc, une tôle de conduction d'arc et un dispositif d'extinction d'arc à limitation de courant

Publications (1)

Publication Number Publication Date
EP1876617A1 true EP1876617A1 (fr) 2008-01-09

Family

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EP06013984A Withdrawn EP1876617A1 (fr) 2006-07-06 2006-07-06 Interrupteur électrique d'installation avec préchambre d'extinction d'arc, une tôle de conduction d'arc et un dispositif d'extinction d'arc à limitation de courant

Country Status (1)

Country Link
EP (1) EP1876617A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011119148A1 (fr) * 2010-03-22 2011-09-29 Siemens Industry, Inc. Chambre de formation d'arc destinée à un disjoncteur et dotée d'une meilleure compression d'arc
CN107481822A (zh) * 2017-08-24 2017-12-15 王巨丰 一种分体组合式压缩灭弧管

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225736A1 (de) * 1982-07-09 1984-01-12 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer leitungsschutzschalter
EP0183145A2 (fr) * 1984-11-27 1986-06-04 Asea Brown Boveri Aktiengesellschaft Appareil de commutation électrique, notamment disjoncteur de puissance et de protection
FR2575861A1 (fr) * 1985-01-07 1986-07-11 Merlin Gerin Disjoncteur electrique miniature a chambre de formation d'arc
DE3619241A1 (de) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Loescheinrichtung fuer einen leitungsschutzschalter
WO1995012888A1 (fr) * 1993-11-02 1995-05-11 Felten & Guilleaume Austria Ag Commutateur
GB2286486A (en) * 1994-02-10 1995-08-16 Matsushita Electric Works Ltd Circuit breaker
DE19860427A1 (de) * 1998-12-28 2000-06-29 Abb Patent Gmbh Elektrisches Schaltgerät, insbesondere Leitungsschutzschalter
DE102005007299A1 (de) * 2005-02-17 2006-08-31 Abb Patent Gmbh Elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum, Lichtbogenleitschienen und strombegrenzender Lichtbogenlöscheinrichtung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225736A1 (de) * 1982-07-09 1984-01-12 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer leitungsschutzschalter
EP0183145A2 (fr) * 1984-11-27 1986-06-04 Asea Brown Boveri Aktiengesellschaft Appareil de commutation électrique, notamment disjoncteur de puissance et de protection
FR2575861A1 (fr) * 1985-01-07 1986-07-11 Merlin Gerin Disjoncteur electrique miniature a chambre de formation d'arc
DE3619241A1 (de) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Loescheinrichtung fuer einen leitungsschutzschalter
WO1995012888A1 (fr) * 1993-11-02 1995-05-11 Felten & Guilleaume Austria Ag Commutateur
GB2286486A (en) * 1994-02-10 1995-08-16 Matsushita Electric Works Ltd Circuit breaker
DE19860427A1 (de) * 1998-12-28 2000-06-29 Abb Patent Gmbh Elektrisches Schaltgerät, insbesondere Leitungsschutzschalter
DE102005007299A1 (de) * 2005-02-17 2006-08-31 Abb Patent Gmbh Elektrisches Installationsgerät mit Lichtbogen-Vorkammerraum, Lichtbogenleitschienen und strombegrenzender Lichtbogenlöscheinrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8164018B2 (en) 2009-03-23 2012-04-24 Siemens Industry, Inc. Circuit breaker arc chambers and methods for operating same
WO2011119148A1 (fr) * 2010-03-22 2011-09-29 Siemens Industry, Inc. Chambre de formation d'arc destinée à un disjoncteur et dotée d'une meilleure compression d'arc
CN107481822A (zh) * 2017-08-24 2017-12-15 王巨丰 一种分体组合式压缩灭弧管
CN107481822B (zh) * 2017-08-24 2023-11-03 王巨丰 一种分体组合式压缩灭弧管

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