WO2016142485A1 - Dispositif de commutation à courant continu - Google Patents

Dispositif de commutation à courant continu Download PDF

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Publication number
WO2016142485A1
WO2016142485A1 PCT/EP2016/055175 EP2016055175W WO2016142485A1 WO 2016142485 A1 WO2016142485 A1 WO 2016142485A1 EP 2016055175 W EP2016055175 W EP 2016055175W WO 2016142485 A1 WO2016142485 A1 WO 2016142485A1
Authority
WO
WIPO (PCT)
Prior art keywords
arc
switching device
switching
quenching
quenching chamber
Prior art date
Application number
PCT/EP2016/055175
Other languages
German (de)
English (en)
Inventor
Laetitia DEPRE
Wolfgang Hauer
Matthias KATZENSTEINER
Stefan Kolm
Raffael Zimmel
Original Assignee
Eaton Industries (Austria) 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 Eaton Industries (Austria) Gmbh filed Critical Eaton Industries (Austria) Gmbh
Publication of WO2016142485A1 publication Critical patent/WO2016142485A1/fr

Links

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
    • H01H9/342—Venting arrangements for arc chutes
    • 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
    • H01H9/36—Metal parts
    • 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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets

Definitions

  • the invention relates to a switching device according to the preamble of claim 1.
  • DC currents are provided or formed.
  • effects occur in an amplified manner, which do not have to be considered in the same form when switching alternating currents.
  • the application of direct current for a long time has generally been restricted to the low power range, in which there were hardly any problems in switching the direct currents, or to special applications in which the size of the switching devices is not a limiting factor.
  • DC switchgear Furthermore, it has been found that DC arcs, especially at low currents, tend to remain static at a particular location within the switchgear, rather than following an arc runner.
  • relevant switching device may come in connection with a fire.
  • the object of the invention is therefore to provide a DC switching device of the type mentioned, with which the mentioned disadvantages can be avoided, and with which direct current high power can be switched safely, and which in particular a safe and durable
  • a switching device can be created, with which direct currents of high power can be safely switched. This can be achieved that arcs safely within the arc extinguishing chamber between the
  • Arc quenching chamber are formed.
  • Fig. 1 shows an embodiment of a subject switching device
  • Fig. 2 shows a splitter holder of a switching device of FIG. 1 in six
  • FIG. 3 shows the splitter holder according to FIG. 2 in an axonometric view.
  • Fig. 1 shows a particularly preferred embodiment of a switching device 1, with at least one electrical input 2 and at least one electrical output 3, as well as with at least a first switching contact 4 and a movable switching bridge 5, wherein the switching device 1 further a
  • Arc quenching assembly 6 having at least one arc quenching chamber 7, wherein in the arc quenching chamber 7 a predetermined plurality of quenching plates 8 are predetermined spaced from one another, wherein in each case at least one Lichtbogenleitelement 10 is arranged with Isolierstoffober inhabit between adjacent quenching plates 8, j, which arc guide element is formed to direct a switching arc towards a center region 20 of the intervening gap 9.
  • a switching device 1 can be created, with which direct currents of high power can be safely switched. It can thereby be achieved that arcs are securely divided within the arc extinguishing chamber 7 between the quenching plates 8 and extinguish. It has been found that in conventional arc extinguishing chambers 7 paths are formed around the quenching plates 8 near or on the side walls of the arc extinguishing chambers 7. By the physical measures can be ensured that the arc is forced away from the side walls in the central region 20 of the quenching plates 8, and not to form conductive paths around the fireplaces 8 comes around. As a result, a switching device 1 with a safe and durable arc quenching chamber 7 can be created.
  • the subject invention relates to switching devices 1, which are provided in particular for the switching of direct currents and specially designed.
  • the invention therefore relates to DC switching devices, which for
  • a representational switching device 1 has an electrical Bngang 2 and an electrical outlet 3, which are preferably designed as screw terminals, as shown in Fig. 1. Furthermore, the switching device 1 a
  • Switchgear housing 14 made of insulating material.
  • the switching device 1 has in the illustrated and preferred embodiment, a single switching path, but a double interruption of this individual switching path is provided. It is preferably provided that the
  • DC switching device 1 next to the first switching contact 4 further comprises a second switching contact, not shown, both fixed to the housing
  • Switching bridge 5 acts to a sudden opening and closing of the switching path to reach. It is preferred and provided as shown
  • Self-switch which one or more triggers, such as an overcurrent release and / or a
  • Short-circuit release 22 has. Furthermore, it is preferably provided that the
  • Switching device 1 has a scarf lock 23, in particular during execution of the
  • the shift lever 21 acts on the scarf lock 23, wherein the position of the switching bridge 5, in a conventional manner, does not have to correspond to the position of the shift lever 21, such as a free trip.
  • switching device 1 from the electrical input 2 to the first switching contact 4, from this via the switching bridge 5 to the second scarf titch, which is not visible in FIG. 1, since this is arranged in a not further functional level of the relevant switching device 1, and from this to the electrical output 3.
  • the switching bridge 5 has two, designed as electrical contacts areas to contact with the first switching contact 4 and the second switching contact, this is referred to in the diction of the subject application only as a switching bridge 5. It can also be provided that also the first switching contact 4 and the second switching contact are designed as movable electrical contacts.
  • the switching device 1 further has an arc extinguishing arrangement 6 to
  • Switching contacts 4, 5 wegzu and bring to extinction. This is to prevent the current flowing through the switching device 1 due to so-called “stationary” arcs and, in addition, due to the thermal effect of the arcs, to damage the switching device 1. Such arcs occur, in particular, during a switch-off process.
  • Switching process refers to the separation of the switching bridge 5 of the first and second electrical switching contact 4 to prevent a
  • the arc extinguishing arrangement 6 has at least one arc quenching chamber 7, wherein according to the subject preferred embodiment with two housing-fixed switching contacts 4 and double interruption, it is provided that each housing-fixed switching contact 4 is associated with an arc quenching chamber 7.
  • the subject invention is based on a
  • Arc quenching chamber 7 described, which is not limiting.
  • a predeterminable plurality of quenching plates 8 are predeterminably arranged spaced from one another.
  • the quenching plates 8 are formed of an electrically conductive metal. According to the preferred embodiment using a permanent magnet, as explained below, it is provided that the quenching plates 8 are not magnetically or only very slightly conductive. It is preferably provided that the quenching plates 8 are formed from a small to non-magnetic steel sheet.
  • the quenching plates 8 are also also magnetically conductive.
  • the quenching plates 8 are preferably formed substantially T-shaped, and have a rectangular basic shape, wherein at one end of the longitudinal side of the rectangular basic shape on both sides also rectangular approaches are formed, which are flush with the basic shape.
  • the quenching plates 8 are further formed substantially flat.
  • an envelope of the, the first switching contact 4 and / or the movable switching bridge 5 facing ends of the juxtaposed, quenching plates 8 has substantially the shape of a plane. As a result, a simple structure of the arc quenching chamber 7 is given.
  • an arc extinguishing chamber insert 13 is arranged according to the preferred embodiment, which has a splitter plate holder 24 made of insulating material and the quenching plates 8, wherein the quenching plates 8 in the Sheet metal holder 24 are held.
  • the insulating material is preferably a polymer.
  • Such a splitter holder 24 is shown in FIGS. 2 and 3.
  • the quenching plates 8 are held directly in the switching device housing 14 of the switching device 1, in particular on at least one housing wall of the switching device housing 14. In each case there are intermediate spaces 9 between the adjacent quenching plates 8, which are arranged at a distance from one another.
  • the splitter holder 24 is preferably U-shaped.
  • splitter holder 24 has a first side wall 12, a second side wall 25 and a web 26 connecting the two side walls 12, 25.
  • the quenching plates 8 are substantially normal to one
  • the arc quenching chamber 7 preferably has an arc inlet region 15. This arc inlet region 15 faces a contact point 16 of the first switching contact 4 and the switching bridge 5. At a the
  • a gas outlet opening 17 to allow escape of the ionization gases.
  • gas outlet opening 17 are arranged in the web 26 of the splitter holder 24, wherein further, not shown, openings for the escape of the relevant gases from the switching device 1 in the switching device housing 14 are arranged.
  • the arc extinguishing arrangement 6 preferably has at least one magnet, in particular a permanent magnet, which is arranged in the switching device 1 in such a way that a switching arc directed to the arc extinguishing chamber 7 acts on a switching arc caused by a contact separation process. As a result, a switching arc is forced or forced into the arc quenching chamber 7.
  • At least one arc guide element 10th is arranged.
  • the Lichtbogenleitelement 10 is formed as Isolierstoffbauteil.
  • the Lichtbogenleitelement 10 is formed, a switching arc in Rchtung a center portion 20 to direct the j I ewei strength intermediate space 9.
  • This guiding of the arc takes place by limiting or restricting the space which is available to the arc for its propagation. In this case, this guiding of the arc does not take place by specifying a
  • Arc path through metal rails as is common practice, but by a Isolierstoffbaumaschine of a path is limited, and so the arc is forced to take a certain path.
  • the central region 20 of the intervening gap 9 is preferably a region which essentially corresponds to the center of at least one of the two
  • the center region 20 is preferably the center of the web 26 of the U-shaped splitter holder 24. It can be provided that the arc is conducted beyond this central region. In other words, an arc is led away by the arc guide elements 10 from a side wall 12, 25 of the splitter plate holder 24 or prevented from propagating along just this side wall 12, 25.
  • the arc guide elements 10 are preferably integral with the arc guide elements 10
  • Switching device housing 14 or the splitter holder 24 is formed.
  • Arc guide elements 10 are therefore also part of the first and second side wall 12, 25 of the splitter plate holder 24 in the preferred embodiment.
  • Switching device housing 14 viewed as separate components.
  • the arc guide elements 10 are formed separately from the switching device housing 14 or the splitter holder 24. It is provided that the arc guide elements 10 are formed as a single element or a comb-like composite separately from a switching device housing 14 or the splitter holder 24. The respective arc guide elements 10 are arranged individually, or in the context of the comb-like composite, in corresponding free spaces of the switching device housing 14 or the splitter plate holder 24.
  • the arc guide elements 10 made of ceramic, in particular comprising Al 2 0 3 or aluminum nitride, are formed. As a result, the material erosion in the arc guide elements 10 can be kept low. As a result, the life of a subject switching device 1 can be further increased.
  • the arc guide element 10 is at least partially
  • the wedge-shaped rib 11 is formed.
  • the arc guide elements 10 designed as a rib 11 have a wedge-shaped or triangular part and a rectangular part adjoining this.
  • Stability of the splitter plate holder 24 and a switching device housing 14 can be improved.
  • the arc guide elements 10 arranged in successive intermediate spaces 9 are in each case opposite
  • Switching device housing 14 are arranged. Thereby, the length of an arc within the arc quenching chamber 7 can be extended, whereby the
  • Arc guide elements 10 are arranged.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

L'invention concerne un dispositif de commutation (1), en particulier un dispositif de commutation à courant continu, présentant au moins une entrée (2) électrique ainsi qu'au moins une sortie (3) électrique, ainsi qu'au moins un premier contact de commutation (4) et un pont de commutation (5) mobile, le dispositif de commutation (1) présentant en outre un dispositif (6) de déclenchement d'arc électrique pourvu d'au moins une chambre (7) de déclenchement d'arc électrique, une pluralité, pouvant être prédéfinie, de chicanes de déclenchement (8) étant disposées dans la chambre de déclenchement (7) d'arc électrique à une certaine distance, pouvant être prédéfinie, les unes des autres. Selon l'invention, à chaque fois au moins un élément (10) de guidage d'arc électrique, présentant des surfaces en matériau isolant, est disposé dans les espaces intermédiaires (9) entre des chicanes de déclenchement (8) adjacentes, l'élément (10) de guidage d'arc électrique étant conçu pour guider un arc électrique de commutation vers une zone centrale (20) de chaque espace intermédiaire (9).
PCT/EP2016/055175 2015-03-11 2016-03-10 Dispositif de commutation à courant continu WO2016142485A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015103576.6 2015-03-11
DE102015103576 2015-03-11

Publications (1)

Publication Number Publication Date
WO2016142485A1 true WO2016142485A1 (fr) 2016-09-15

Family

ID=55521737

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/055175 WO2016142485A1 (fr) 2015-03-11 2016-03-10 Dispositif de commutation à courant continu

Country Status (1)

Country Link
WO (1) WO2016142485A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1124125B (de) * 1956-12-24 1962-02-22 Westinghouse Electric Corp Elektrischer Schalter mit Lichtbogenloeschanordnung
US3139503A (en) * 1960-07-21 1964-06-30 Merlin Gerin Extinguishing device for electrical arcs
DE602005003908T2 (de) * 2004-11-09 2008-12-11 Eaton Corp., Cleveland Lichtbogenkammer und elektromagnetischer Schalter mit solchen Lichtbogenkammer
EP2278599A2 (fr) * 2009-07-22 2011-01-26 Eaton Corporation Appareil de commutation électrique et son assemblage de boîte de soufflage
DE102010032715A1 (de) * 2010-07-29 2012-02-02 Abb Ag Lichtbogenlöscheinrichtung und Installationsschaltgerät mit einer Lichtbogenlöscheinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1124125B (de) * 1956-12-24 1962-02-22 Westinghouse Electric Corp Elektrischer Schalter mit Lichtbogenloeschanordnung
US3139503A (en) * 1960-07-21 1964-06-30 Merlin Gerin Extinguishing device for electrical arcs
DE602005003908T2 (de) * 2004-11-09 2008-12-11 Eaton Corp., Cleveland Lichtbogenkammer und elektromagnetischer Schalter mit solchen Lichtbogenkammer
EP2278599A2 (fr) * 2009-07-22 2011-01-26 Eaton Corporation Appareil de commutation électrique et son assemblage de boîte de soufflage
DE102010032715A1 (de) * 2010-07-29 2012-02-02 Abb Ag Lichtbogenlöscheinrichtung und Installationsschaltgerät mit einer Lichtbogenlöscheinrichtung

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