EP2915175B1 - Gleichstromschaltgerät - Google Patents

Gleichstromschaltgerät Download PDF

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Publication number
EP2915175B1
EP2915175B1 EP13805278.2A EP13805278A EP2915175B1 EP 2915175 B1 EP2915175 B1 EP 2915175B1 EP 13805278 A EP13805278 A EP 13805278A EP 2915175 B1 EP2915175 B1 EP 2915175B1
Authority
EP
European Patent Office
Prior art keywords
switching
arc extinguishing
arc
magnet
switching contact
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.)
Active
Application number
EP13805278.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2915175A1 (de
Inventor
Johann Koppensteiner
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.)
Eaton Intelligent Power Ltd
Original Assignee
Eaton Intelligent Power Ltd
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
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Application filed by Eaton Intelligent Power Ltd filed Critical Eaton Intelligent Power Ltd
Publication of EP2915175A1 publication Critical patent/EP2915175A1/de
Application granted granted Critical
Publication of EP2915175B1 publication Critical patent/EP2915175B1/de
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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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2066—Fork-shaped bridge; Two transversally connected contact arms bridging two fixed contacts
    • 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 DC switching device according to the preamble of claim 1.
  • the US 2010/0126966 A1 describes switching devices, each with two extinguishing chambers, each of the extinguishing chambers are associated with a pair of connections and a switching path, and wherein further described numerous ways to connect or interconnect corresponding switching devices, depending on the application or circuit environment.
  • the EP 2 061 053 A2 describes a multi-phase switching device with an externally attachable to the housing magnet assembly.
  • the EP 2 463 880 A1 describes a switching device with simple interruption per switching path, as well as three parallel switching paths. Each contact is associated with an arc quenching chamber, which has a partition and a magnet assembly.
  • the EP 2 463 877 A1 describes a DC switching device with multiple arc extinguishing chambers and with a magnet assembly to push arcs in the extinguishing chambers.
  • the design of this switch is such that a number of arc extinguishing chambers are provided in order to ensure polarity-protected operation, and depending on the polarity of the connected DC voltage, a switching arc is driven into one of the extinguishing chambers.
  • 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 DC currents high power can be switched safely.
  • a DC switching device which has a high switching capacity at DC currents, and which is therefore suitable for switching DC currents of high power.
  • Such a DC switching device has a high level of security, in particular against thermal destruction.
  • the Fig. 1 to 3 show a particularly preferred embodiment of a DC switching device 1, and an arc extinguishing arrangement 6 of such a DC switching device 1, wherein the DC switching device 1 has at least one electrical input 2 and at least one electrical output 3, and at least a first switching contact 4, a second switching contact 5 and a movable switching bridge 20, wherein a current path from the input 2 to the output 3 is electrically connected, when the first switching contact 4 and the second switching contact 5 are conductively connected by means of the switching bridge 20, wherein the DC switching device 1 further comprises an arc extinguishing arrangement 6, wherein the arc extinguishing arrangement.
  • a DC switching device 1 which has a high switching capacity at DC currents, and which is therefore suitable for switching DC currents of high power.
  • Such a DC switching device 1 has a high level of security, in particular against thermal destruction.
  • the subject invention relates to switching devices, which are provided for the switching of direct currents and specially designed.
  • the invention relates to DC switching devices 1, which are intended and designed for the intended switching high voltages in the range of several hundred volts, about 600V operating voltage, as well as currents in the two-digit ampere range.
  • An objective DC switching device 1 has an electrical input 2 and an electrical output 3, which are preferably designed as screw terminals, as well as in Fig. 1 shown. Furthermore, the DC switching device 1 has an insulating material housing.
  • the DC switching device 1 has a single switching path, but with a double interruption of this single switching path is provided. It is preferably provided that the first and the second switching contact 4, 5 are fixed to the housing, and can be electrically connected by a movable switching bridge 20, whereby an electrically conductive current path from the input 2 to the output 3 is formed. It is provided that the position of the switching bridge 20 is manually controlled by the shift lever 19. It is preferably provided that the shift lever 19 acts on the switching bridge 20 via a snap-action switching mechanism in order to achieve a sudden opening and closing of the switching path. It can also be provided to carry out the subject DC switching device 1 as a so-called.
  • Self-switch which has one or more triggers, such as an overcurrent release and / or a short-circuit release. Furthermore, it is preferably provided that the DC switching device 1 has a switching mechanism, in particular when the same is carried out as a self-switch.
  • the current flow through the DC switching device 1 shown is from the electrical input 2 to the first switching contact 4, from this via the switching bridge 20 to the second switching contact 5 and from this to the electrical output 3.
  • the switching bridge 20 in this case two, designed as electrical contacts Has areas to contact with the first switching contact 4 and the second switching contact 5, this is in the diction of the subject application only referred to as a switching bridge 20. It can also be provided that also the first switching contact 4 and the second switching contact 5 are designed as movable electrical contacts.
  • the DC switching device 1 further comprises an arc extinguishing arrangement 6 in order to extinguish arcs 11, which arise in the course of a switching operation, to extinguish. This is to prevent that due to so-called “stationary” arcs 11 continues to flow through the DC switching device 1 and also due to the thermal effect of the arcs 11 damage to the DC switching device 1 takes place. Such arcs 11 occur in particular during a switch-off.
  • Switchching off here refers to the separation of the switching bridge 20 of the first and second electrical switching contact 4, 5 for preventing a current flow through the DC switching device 1.
  • the physical relationships in the ignition of an arc are described in the law of induction.
  • Fig. 2 shows a preferred embodiment of the arc extinguishing arrangement 6.
  • the first switching contact 4 and the second switching contact 5 are shown, but these are shown without any further contacting, only to illustrate their arrangement relative to the respective arc extinguishing chambers 7, 8.
  • the arc extinguishing arrangement 6 has a first arc quenching chamber 7 and a second arc quenching chamber 8. It is preferably provided that the first arc quenching chamber 7 is assigned to the first switching contact 4, and that the second arc quenching chamber 8 is associated with the second switching contact 5.
  • the term "assigned" refers in this context to an arrangement of the relevant arc quenching chamber 7, 8 with respect to the specified switching contact 4, 5 in such a way that an emerging at the switching contact 4, 5 arc 11 its way into or to the relevant arc quenching chamber 7, 8 finds.
  • Fig. 2 shows the two switching contacts 4, 5 in the region of the respective arc quenching chamber 7, 8th
  • the first arc quenching chamber 7 and the second arc quenching chamber 8 are arranged parallel to each other in the DC switching device 1, as in Fig. 2 and 3 shown.
  • each arc guide rail 18 is connected in each case to the first switching contact 4 and to the second switching contact 5, which are arranged opposite the quenching plates 9 in the arc extinguishing arrangement 6, therefore in the respective arc quenching chamber 7, 8.
  • the arc running rail 18 connected to the first switching contact 4 is shown.
  • first arc quenching chamber 7 and the second arc quenching chamber 8 a plurality of quenching plates 9 are arranged in each case.
  • the quenching plates 9 are preferably arranged substantially normal to the arc guide rail 18.
  • at least one quenching plate 9 of the first arc quenching chamber 7 is electrically conductively connected to a quenching plate 9 of the second arc quenching chamber 8.
  • the DC switching device 1 has a magnet assembly 10 which is designed such that on the - caused by a switching process - arcs 11, in the first arc quenching chamber 7 and in the second arc extinguishing chamber 8, each a Lorentz force 12 in the direction of Fire plates 9 acts. Therefore, that acts on the respective occurring arcs 11 a Lorentz force 12 which accelerates the arc 11 in the first arc quenching chamber 7 and the arc 11 in the second arc quenching chamber 8 toward the quenching plates 9 and the arcs 11 formally to the quenching plates 9 and in the spaces between the quenching plates 9 presses.
  • Fig. 3 shows a particularly preferred embodiment of the subject invention.
  • the two arcs 11 as vectors, which are arranged projecting on the cutting plane, and the respective acting Lorentz forces 12 and F.
  • the areas in which arcs 11 occur and their direction, are predetermined by the design of the DC switching device 1 or can the design of the DC switching device 1 are affected.
  • any type of arrangement of magnets in the magnet assembly 10 suitable for achieving the stated function may be provided. It is preferably provided that the magnet arrangement 10 has at least one first magnet 13 and one second magnet 14, in particular that the magnet arrangement 10 has exactly one first and one second magnet 13, 14. As a result, in the arrangement with two separate arc extinguishing chambers 7, 8 a very good effect can be achieved with little design effort.
  • first magnet 13 and the second magnet 14 are arranged with mutually facing poles of the same polarity in the DC switching device 1. Therefore, for example, the first magnet 13 and the second magnet 14 are respectively arranged such that their north poles face each other, therefore, the two magnets 13, 14 repel each other.
  • the first magnet 13 and the second magnet 14 in each case as flat or planar magnets, with a very small thickness, whose poles are respectively formed on the cover surfaces. Therefore, one of the two surfaces is a south pole and the other surface is a north pole.
  • the magnets used are each permanent magnets.
  • the arrangement of the first magnet 13 has laterally on the first arc quenching chamber 7 and the second magnet 14 laterally to the second arc quenching chamber 8 proved, creating a very uniform B-field distribution in the two arc extinguishing chambers 7, 8 can be achieved.
  • first magnet 13 and the second magnet 14 are arranged between the first arc quenching chamber 7 and the second arc quenching chamber 8.
  • the two magnets 13, 14 are arranged in a web 15 between the two arc extinguishing chambers 7, 8, as in Fig. 3 is shown.
  • Fig. 2 is the web 15 thus formed clearly visible. Through this web 15 also results in a distance between the two arc extinguishing chambers 7, 8, which increases the thermal capacity of the entire arc extinguishing assembly 6.
  • each partially a U-shaped yoke 16, 17 is arranged outside the first arc quenching chamber 7 and the second arc extinguishing chamber 8 . It is in particular, and as in Fig. 3 provided that mutually facing legs of the two yokes 16, 17 are arranged adjacent to each other in the region of the web 15, and in each case directly adjacent to these legs of the first and the second magnet are arranged.
  • the two yokes 16, 17 are formed of ferromagnetic material.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
EP13805278.2A 2012-10-31 2013-10-31 Gleichstromschaltgerät Active EP2915175B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012110410.7A DE102012110410A1 (de) 2012-10-31 2012-10-31 Gleichstromschaltgerät
PCT/EP2013/072804 WO2014068053A1 (de) 2012-10-31 2013-10-31 Gleichstromschaltgerät

Publications (2)

Publication Number Publication Date
EP2915175A1 EP2915175A1 (de) 2015-09-09
EP2915175B1 true EP2915175B1 (de) 2019-01-02

Family

ID=49765451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13805278.2A Active EP2915175B1 (de) 2012-10-31 2013-10-31 Gleichstromschaltgerät

Country Status (6)

Country Link
EP (1) EP2915175B1 (ru)
CN (1) CN104813429B (ru)
BR (1) BR112015009673A2 (ru)
DE (1) DE102012110410A1 (ru)
RU (1) RU2656231C2 (ru)
WO (1) WO2014068053A1 (ru)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019107029A1 (de) * 2019-03-19 2020-09-24 Panasonic Industrial Devices Europe Gmbh Sicherungsvorrichtung
CN112908798A (zh) * 2021-01-29 2021-06-04 北京双杰电气股份有限公司 一种环状磁屏蔽罩及使用其的低压直流断路器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2463877A1 (de) * 2010-12-07 2012-06-13 Eaton Industries GmbH Schalter mit Löschkammer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004874A (en) * 1989-11-13 1991-04-02 Eaton Corporation Direct current switching apparatus
DE102006035844B4 (de) * 2006-08-01 2008-06-19 Schaltbau Gmbh Schütz für Gleichstrom- und Wechselstrombetrieb
FR2916571B1 (fr) * 2007-05-22 2009-09-11 Schneider Electric Ind Sas Chambre de coupure et disjoncteur equipe d'une telle chambre de coupure
DE102007054958A1 (de) * 2007-11-17 2009-06-04 Moeller Gmbh Schaltgerät für Gleichstrom-Anwendungen
FR2938969A1 (fr) * 2008-11-21 2010-05-28 Schneider Electric Ind Sas Dispositif de coupure pour couper un courant continu bidirectionnel et installation a cellules photovoltaiques equipee d'un tel dispositif
CN201387860Y (zh) * 2009-04-14 2010-01-20 上海良信电器股份有限公司 以磁铁促使熄弧的直流断路器
US8222983B2 (en) * 2010-12-08 2012-07-17 Eaton Corporation Single direct current arc chamber, and bi-directional direct current electrical switching apparatus employing the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2463877A1 (de) * 2010-12-07 2012-06-13 Eaton Industries GmbH Schalter mit Löschkammer

Also Published As

Publication number Publication date
BR112015009673A2 (pt) 2017-07-04
CN104813429B (zh) 2018-07-31
WO2014068053A1 (de) 2014-05-08
DE102012110410A1 (de) 2014-04-30
RU2656231C2 (ru) 2018-06-04
CN104813429A (zh) 2015-07-29
EP2915175A1 (de) 2015-09-09
RU2015120617A (ru) 2016-12-20

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