EP2915175B1 - Dc switchgear - Google Patents
Dc switchgear Download PDFInfo
- 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.)
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- 238000010791 quenching Methods 0.000 description 37
- 230000000171 quenching effect Effects 0.000 description 37
- 230000006378 damage Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Images
Classifications
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- 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
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- 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
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- 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)
Description
Die Erfindung betrifft ein Gleichstromschaltgerät gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a DC switching device according to the preamble of
Es sind Schaltgeräte zum Schalten von Gleichströmen an sich bekannt. Jedoch war die Anwendung von Gleichstrom über lange Zeit in der Regel auf den Kleinleistungsbereich beschränkt, in welchem kaum Probleme beim Schalten der Gleichströme auftraten.There are switching devices for switching DC currents known per se. However, the use of direct current for a long time was usually limited to the low power range in which there were hardly any problems in switching the direct currents.
Seit der Verbreitung von Fotovoltaikanwendungen sowie leistungsstarker Batterie-Back-up-Systeme für EDV-Serveranlagen ist es erforderlich auch Gleichströme höherer Spannung und Leistung zu Schalten. Dabei haben sich die bekannten Wechselstromschaltgeräte als in vielen Belangen ungeeignet erwiesen. So kann es etwa beim Schalten von Gleichströmen mit einem Wechselstromschalter selbst bei Spannungen und Strömen weit unter den maximalen Wechselstrom-Leistungsgrenzen des betreffenden Wechselstromschalters zu dessen Totalverlust kommen. Dies kann in weiterer Folge, neben dem Ausfall einer elektrischen Anlage, auch zu einem Brand führen.Since the proliferation of photovoltaic applications and high-performance battery back-up systems for computerized server systems, it is also necessary to switch DC currents of higher voltage and power. The known AC switchgear have proved unsuitable in many respects. For example, when switching DC currents with an AC switch, even at voltages and currents far below the maximum AC power limits of the AC switch concerned, it can result in its total loss. As a result, in addition to the failure of an electrical system, this can also lead to a fire.
Die
Die
Die
Die
Aufgabe der Erfindung ist es daher ein Gleichstromschaltgerät der eingangs genannten Art anzugeben, mit welchem die genannten Nachteile vermieden werden können, und mit welchem Gleichströme hoher Leistung sicher geschaltet werden können.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.
Erfindungsgemäß wird dies durch die Merkmale des Patentanspruches 1 erreicht.This is achieved by the features of
Dadurch kann ein Gleichstromschaltgerät geschaffen werden, welches ein hohes Schaltvermögen bei Gleichströmen aufweist, und welches daher dazu geeignet ist, Gleichströme hoher Leistung zu schalten. Ein derartiges Gleichstromschaltgerät weist eine hohe Sicherheit, insbesondere gegen thermische Zerstörung auf.Thereby, a DC switching device can be provided, 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.
Die Unteransprüche betreffen weitere vorteilhafte Ausgestaltungen der Erfindung.The subclaims relate to further advantageous embodiments of the invention.
Ausdrücklich wird hiermit auf den Wortlaut der Patentansprüche Bezug genommen, wodurch die Ansprüche an dieser Stelle durch Bezugnahme in die Beschreibung eingefügt sind und als wörtlich wiedergegeben gelten.It is hereby expressly referred to the wording of the claims, whereby the claims at this point are incorporated by reference into the description and are considered to be reproduced verbatim.
Die Erfindung wird unter Bezugnahme auf die beigeschlossenen Zeichnungen, in welchen lediglich bevorzugte Ausführungsformen beispielhaft dargestellt sind, näher beschrieben. Dabei zeigt:
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Fig. 1 eine besonders bevorzugte Ausführungsform eines gegenständlichen Gleichstromschaltgeräts in teilweise geschnittener Ansicht im Aufriss; -
Fig. 2 die Lichtbogenlöschanordnung des Gleichstromschaltgeräts gemäßFig. 1 in axonometrischer Darstellung; und -
Fig. 3 die Lichtbogenlöschanordnung gemäßFig. 2 in geschnittener Ansicht im Aufriss.
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Fig. 1 a particularly preferred embodiment of a subject DC switching device in a partially sectioned view in elevation; -
Fig. 2 the arc extinguishing arrangement of the DC switching device according toFig. 1 in axonometric representation; and -
Fig. 3 the arc extinguishing arrangement according toFig. 2 in a cutaway view in elevation.
Die
Dadurch kann ein Gleichstromschaltgerät 1 geschaffen werden, welches ein hohes Schaltvermögen bei Gleichströmen aufweist, und welches daher dazu geeignet ist, Gleichströme hoher Leistung zu schalten. Ein derartiges Gleichstromschaltgerät 1 weist eine hohe Sicherheit, insbesondere gegen thermische Zerstörung auf.Thereby, a
Die gegenständliche Erfindung betrifft Schaltgeräte, welche für das Schalten von Gleichströmen vorgesehen und speziell ausgebildet sind. Insbesondere betrifft die Erfindung Gleichstromschaltgeräte 1, welche zum bestimmungsgemäßen Schalten hoher Spannungen im Bereich mehrerer Hundert Volt, etwa 600V Betriebsspannung, sowie von Strömen im zweistelligen Amperebereich vorgesehen und ausgebildet sind.The subject invention relates to switching devices, which are provided for the switching of direct currents and specially designed. In particular, the invention relates to
Nachfolgend wir die Erfindung anhand einer bevorzugten Ausführungsform eines Gleichstromschaltgeräts 1 mit einer einzelnen Schaltstrecke näher beschrieben. Es können aber auch Ausführungen mit mehreren parallelen Schaltstrecken vorgesehen sein.The invention will be described in more detail below with reference to a preferred embodiment of a
Ein gegenständliches Gleichstromschaltgerät 1 weist einen elektrischen Eingang 2 sowie einen elektrischen Ausgang 3 auf, welche bevorzugt als Schraubklemmen ausgebildet sind, wie auch in
Das Gleichstromschaltgerät 1 weist eine einzelne Schaltstrecke auf, wobei jedoch eine doppelte Unterbrechung dieser einzelnen Schaltstrecke vorgesehen ist. Bevorzugt ist vorgesehen, dass der erste und der zweite Schaltkontakt 4, 5 gehäusefest angeordnet sind, und durch eine bewegliche Schaltbrücke 20 elektrisch leitend verbunden werden können, wodurch ein elektrisch leitender Strompfad vom Eingang 2 zum Ausgang 3 gebildet wird. Dabei ist vorgesehen, dass die Stellung der Schaltbrücke 20 durch den Schalthebel 19 manuell steuerbar ist. Bevorzugt ist vorgesehen, dass der Schalthebel 19 über ein Sprungeinschaltwerk auf die Schaltbrücke 20 wirkt, um ein sprunghaftes Öffnen und Schließen der Schaltstrecke zu erreichen. Es kann auch vorgesehen sein, das gegenständliche Gleichstromschaltgerät 1 als sog. Selbstschalter auszuführen, welches einen oder mehrere Auslöser, etwa einen Überstromauslöser und/oder einen Kurzschlussauslöser aufweist. Weiters ist bevorzugt vorgesehen, dass das Gleichstromschaltgerät 1 ein Schaltschloss aufweist, insbesondere bei Ausführung des Selbigen als Selbstschalter.The
Bei geschlossenen Schaltkontakten erfolgt der Stromfluss durch das dargestellte Gleichstromschaltgerät 1 vom elektrischen Eingang 2 zum ersten Schaltkontakt 4, von diesem über die Schaltbrücke 20 zum zweiten Schaltkontakt 5 und von diesem weiter zum elektrischen Ausgang 3. Wenngleich die Schaltbrücke 20 dabei zwei, als elektrische Kontakte ausgebildete Bereiche aufweist, um mit dem ersten Schaltkontakt 4 und dem zweiten Schaltkontakt 5 zu kontaktieren, wird diese in der Diktion der gegenständlichen Anmeldung lediglich als Schaltbrücke 20 bezeichnet. Es kann auch vorgesehen sein, dass auch der erste Schaltkontakt 4 und der zweite Schaltkontakt 5 als bewegliche elektrische Kontakte ausgebildet sind.In the case of closed switch contacts, the current flow through the
Das Gleichstromschaltgerät 1 weist weiters eine Lichtbogenlöschanordnung 6 auf, um Lichtbögen 11, welche im Zuge eines Schaltvorgangs entstehen, zum Verlöschen zu bringen. Dadurch soll verhindert werden, dass aufgrund sog. "stehender" Lichtbögen 11 weiterhin ein Stromfluss über das Gleichstromschaltgerät 1 erfolgt und zudem aufgrund der thermischen Wirkung der Lichtbögen 11 eine Beschädigung des Gleichstromschaltgeräts 1 erfolgt. Derartige Lichtbögen 11 treten insbesondere bei einem Ausschaltvorgang auf. "Ausschaltvorgang" bezeichnet dabei das Trennen der Schaltbrücke 20 von dem ersten und zweiten elektrischen Schaltkontakt 4, 5 zum Unterbinden eines Stromflusses durch das Gleichstromschaltgerät 1. Die physikalischen Zusammenhänge beim Zünden eines Lichtbogens sind im Induktionsgesetz beschriebenen.The
Die Lichtbogenlöschanordnung 6 weist eine erste Lichtbogenlöschkammer 7 und eine zweite Lichtbogenlöschkammer 8 auf. Dabei ist bevorzugt vorgesehen, dass die erste Lichtbogenlöschkammer 7 dem ersten Schaltkontakt 4 zugeordnet ist, und dass die zweite Lichtbogenlöschkammer 8 dem zweiten Schaltkontakt 5 zugeordnet ist. Der Begriff "zugeordnet" bezeichnet in diesem Zusammenhang eine Anordnung der betreffenden Lichtbogenlöschkammer 7, 8 gegenüber dem angegebenen Schaltkontakt 4, 5 in der Art, dass ein an dem Schaltkontakt 4, 5 entstehender Lichtbogen 11 seinen Weg in bzw. an die betreffende Lichtbogenlöschkammer 7, 8 findet.
Bevorzugt ist, wie bei der dargestellten Ausführungsform, vorgesehen, dass die erste Lichtbogenlöschkammer 7 und die zweite Lichtbogenlöschkammer 8 in dem Gleichstromschaltgerät 1 parallel nebeneinander angeordnet sind, wie in
Bevorzugt ist vorgesehen, dass je eine Lichtbogenlaufschiene 18 mit dem ersten Schaltkontakt 4 sowie mit dem zweiten Schaltkontakt 5 jeweils leitend verbunden ist, welche gegenüber den Löschblechen 9 in der Lichtbogenlöschanordnung 6, daher in der jeweiligen Lichtbogenlöschkammer 7, 8, angeordnet sind. In den
In der ersten Lichtbogenlöschkammer 7 und der zweiten Lichtbogenlöschkammer 8 sind jeweils eine Mehrzahl an Löschblechen 9 angeordnet. Die Löschbleche 9 sind dabei bevorzugt im Wesentlichen Normal auf die Lichtbogenlaufschiene 18 angeordnet. Jeweils wenigstens ein Löschblech 9 der ersten Lichtbogenlöschkammer 7 ist dabei mit einem Löschblech 9 der zweiten Lichtbogenlöschkammer 8 elektrisch leitend verbunden.In the first
Wird - bei einem Stromfluss über das Gleichstromschaltgerät 1 - die Schaltbrücke 20 von dem ersten Schaltkontakt 4 und dem zweiten Schaltkontakt 5 weg bewegt, entsteht ein Lichtbogen 11 vom ersten Schaltkontakt 4 zur Schaltbrücke 20, sowie ein weiterer Lichtbogen 11 von der Schaltbrücke 20 zum zweiten Schaltkontakt 5. Bei einer gewissen Länge der durch die Lichtbögen 11 zu überbrückenden Luftstrecke springen diese zu den Löschblechen 9 der Lichtbogenlöschkammern 7, 8 über. Es hat sich dabei gezeigt, dass die zu diesem Zeitpunkt bestehenden Lichtbögen 11 eine erstaunliche Stabilität aufweisen, und es sein kann, dass diese Lichtbögen 11 an den betreffenden Löschblechen 9, an denen sie Kontaktieren, bestehen bleiben, bis es zur thermischen Zerstörung des Gleichstromschaltgeräts 1 kommt. Dieses Problem ist in der Wechselstromtechnik in der Art nicht bekannt, da es aufgrund der ständig erfolgenden Nulldurchgänge der anliegenden Spannung schnell zu einem Verlöschen auftretender Wechselstromlichtbögen kommt.If the switching
Es ist daher vorgesehen, dass das Gleichstromschaltgerät 1 eine Magnetanordnung 10 aufweist, welche derart ausgebildet ist, dass auf die - durch einen Schaltvorgang verursachten - Lichtbögen 11, in der ersten Lichtbogenlöschkammer 7 und in der zweiten Lichtbogenlöschkammer 8, jeweils eine Lorentzkraft 12 in Richtung der Löschbleche 9 wirkt. Daher, dass auf die jeweils auftretenden Lichtbögen 11 eine Lorentzkraft 12 wirkt, welche den Lichtbogen 11 in der ersten Lichtbogenlöschkammer 7 und den Lichtbogen 11 in der zweiten Lichtbogenlöschkammer 8 jeweils hin zu den Löschblechen 9 beschleunigt und die Lichtbögen 11 förmlich an die Löschbleche 9 bzw. in die Zwischenräume zwischen den Löschblechen 9 drückt.It is therefore provided that the
Da es sich bei einem Lichtbogen 11 um bewegte elektrische Ladungen handelt, wirken auf diesen in einem Magnetfeld auch entsprechende Kräfte. Mit anderen Worten ist vorgesehen, dass die Magnetanordnung 10 ein B-Feld erzeugt, welches im Bereich der Lichtbögen 11 normal zur Längserstreckung der Lichtbögen 11 ist. Dies ist etwa in
Es kann jede Art der Anordnung von Magneten in der Magnetanordnung 10 vorgesehen sein, welche geeignet ist, die angeführte Funktion zu erzielen. Bevorzugt ist vorgesehen, dass die Magnetanordnung 10 wenigstens einen ersten Magnet 13 und einen zweiten Magnet 14 aufweist, insbesondere, dass die Magnetanordnung 10 genau einen ersten und einen zweiten Magnet 13, 14 aufweist. Dadurch ist bei der Anordnung mit zwei getrennten Lichtbogenlöschkammern 7, 8 eine sehr gute Wirkung erzielbar mit geringem konstruktiven Aufwand.Any type of arrangement of magnets in the
Es hat sich als besonders einfach zu implementierende Ausführung der gegenständlichen Erfindung erwiesen, dass der erste Magnet 13 und der zweite Magnet 14 mit aufeinander zuweisenden Polen gleicher Polarität in dem Gleichstromschaltgerät 1 angeordnet sind. Daher, dass der erste Magnet 13 und der zweite Magnet 14 beispielsweise jeweils derart angeordnet sind, dass deren Nordpole aufeinander hin gerichtet sind, daher dass sich die beiden Magnete 13, 14 abstoßen.It has proven to be particularly easy to implement embodiment of the subject invention, that the
Es hat sich dabei als Vorteilhaft erwiesen, den ersten Magnet 13 und den zweiten Magnet 14 jeweils als flache bzw. flächenförmige Magnete, mit sehr geringer Dicke, auszuführen, deren Pole jeweils an den Deckflächen ausgebildet sind. Daher eine der beiden Flächen ist vollflächig ein Südpol und die andere Fläche ein Nordpol. Bevorzugt handelt es sich bei den verwendeten Magneten jeweils um Permanentmagneten.It has proven to be advantageous in this case to carry out the
Als besonders vorteilhaft hat sich die Anordnung des ersten Magneten 13 seitlich an der ersten Lichtbogenlöschkammer 7 sowie des zweiten Magneten 14 seitlich an der zweiten Lichtbogenlöschkammer 8 erwiesen, wodurch eine sehr gleichmäßige B-Feld-Verteilung in den beiden Lichtbogenlöschkammern 7, 8 erreicht werden kann.To be particularly advantageous, the arrangement of the
Es hat sich als besonders vorteilhaft, insbesondere hinsichtlich der Fertigung erwiesen, dass der erste Magnet 13 und der zweite Magnet 14 zwischen der ersten Lichtbogenlöschkammer 7 und der zweiten Lichtbogenlöschkammer 8 angeordnet sind. Die beiden Magnete 13, 14 sind dabei in einem Steg 15 zwischen den beiden Lichtbogenlöschkammern 7, 8 angeordnet, wie dies in
Zum Erzielen eines gleichmäßigen Magnetfeldes B in den beiden Lichtbogenlöschkammern 7, 8 ist gemäß einer bevorzugten Ausführungsform vorgesehen, dass außen um die erste Lichtbogenlöschkammer 7 und die zweite Lichtbogenlöschkammer 8 jeweils bereichsweise ein U-förmiges Joch 16, 17 angeordnet ist. Dabei ist insbesondere, und wie in
Claims (3)
- Direct current switchgear (1) with at least one electrical input (2) and at least one electrical output (3), and with at least one first switching contact (4), a second switching contact (5) and a mobile jumper (20), a current path being electrically conductive from the input (2) to the output (3) when the first switching contact (4) and the second switching contact (5) are conductively connected by means of the jumper (20), the direct current switchgear (1) further having an arc extinguishing assembly (6), the arc extinguishing assembly (6) having a first arc extinguishing chamber (7) and a second arc extinguishing chamber (8), each comprising a plurality of extinguishing plates (9), the first arc extinguishing chamber (7) being assigned to the first switching contact (4), the second arc extinguishing chamber (8) being assigned to the second switching contact (4), the first arc extinguishing chamber (7) and the second arc extinguishing chamber (8) being arranged parallel next to one another in the direct current switchgear (1), the direct current switchgear (1) having a magnet array (10) and the magnet array (10) having at least one first magnet (13) and a second magnet (14), characterised in that the first magnet (13) and the second magnet (14) are arranged between the first arc extinguishing chamber (7) and the second arc extinguishing chamber (8) and in that the first magnet (13) and the second magnet (14) are arranged in the direct current switchgear (1) with poles of the same polarity being assigned to one another.
- Direct current switchgear (1) according to claim 1, characterised in that a U-shaped yoke (16, 17) is arranged externally around the first arc extinguishing chamber (7) and the second arc extinguishing chamber (8) respectively.
- Direct current switchgear (1) according to claim 1 or 2, characterised in that an arc rail (18) is connected conductively to the first switching contact (4) and to the second switching contact (5) respectively, which are arranged opposite the extinguishing plates (9) in the arc extinguishing assembly (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012110410.7A DE102012110410A1 (en) | 2012-10-31 | 2012-10-31 | DC switchgear |
PCT/EP2013/072804 WO2014068053A1 (en) | 2012-10-31 | 2013-10-31 | Dc switchgear |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2915175A1 EP2915175A1 (en) | 2015-09-09 |
EP2915175B1 true EP2915175B1 (en) | 2019-01-02 |
Family
ID=49765451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13805278.2A Active EP2915175B1 (en) | 2012-10-31 | 2013-10-31 | Dc switchgear |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2915175B1 (en) |
CN (1) | CN104813429B (en) |
BR (1) | BR112015009673A2 (en) |
DE (1) | DE102012110410A1 (en) |
RU (1) | RU2656231C2 (en) |
WO (1) | WO2014068053A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019107029A1 (en) * | 2019-03-19 | 2020-09-24 | Panasonic Industrial Devices Europe Gmbh | Safety device |
CN112908798A (en) * | 2021-01-29 | 2021-06-04 | 北京双杰电气股份有限公司 | Annular magnetic shield and low-voltage direct-current circuit breaker using same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2463877A1 (en) * | 2010-12-07 | 2012-06-13 | Eaton Industries GmbH | Switch with arcing chamber |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5004874A (en) * | 1989-11-13 | 1991-04-02 | Eaton Corporation | Direct current switching apparatus |
DE102006035844B4 (en) * | 2006-08-01 | 2008-06-19 | Schaltbau Gmbh | Contactor for DC and AC operation |
FR2916571B1 (en) * | 2007-05-22 | 2009-09-11 | Schneider Electric Ind Sas | CUTTING CHAMBER AND CIRCUIT BREAKER EQUIPPED WITH SUCH CUTTING CHAMBER |
DE102007054958A1 (en) * | 2007-11-17 | 2009-06-04 | Moeller Gmbh | Switching device for DC applications |
FR2938969A1 (en) * | 2008-11-21 | 2010-05-28 | Schneider Electric Ind Sas | CUTTING DEVICE FOR CUTTING BIDIRECTIONAL CONTINUOUS CURRENT AND PHOTOVOLTAIC CELL INSTALLATION EQUIPPED WITH SUCH A DEVICE |
CN201387860Y (en) * | 2009-04-14 | 2010-01-20 | 上海良信电器股份有限公司 | Direct current (DC) circuit breaker promoting arc blowout in virtue of magnets |
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 |
-
2012
- 2012-10-31 DE DE102012110410.7A patent/DE102012110410A1/en not_active Ceased
-
2013
- 2013-10-31 BR BR112015009673A patent/BR112015009673A2/en not_active IP Right Cessation
- 2013-10-31 RU RU2015120617A patent/RU2656231C2/en active
- 2013-10-31 CN CN201380057104.XA patent/CN104813429B/en active Active
- 2013-10-31 WO PCT/EP2013/072804 patent/WO2014068053A1/en active Application Filing
- 2013-10-31 EP EP13805278.2A patent/EP2915175B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2463877A1 (en) * | 2010-12-07 | 2012-06-13 | Eaton Industries GmbH | Switch with arcing chamber |
Also Published As
Publication number | Publication date |
---|---|
CN104813429B (en) | 2018-07-31 |
RU2656231C2 (en) | 2018-06-04 |
DE102012110410A1 (en) | 2014-04-30 |
CN104813429A (en) | 2015-07-29 |
RU2015120617A (en) | 2016-12-20 |
WO2014068053A1 (en) | 2014-05-08 |
EP2915175A1 (en) | 2015-09-09 |
BR112015009673A2 (en) | 2017-07-04 |
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