EP2904624A1 - Switching device - Google Patents

Switching device

Info

Publication number
EP2904624A1
EP2904624A1 EP13798977.8A EP13798977A EP2904624A1 EP 2904624 A1 EP2904624 A1 EP 2904624A1 EP 13798977 A EP13798977 A EP 13798977A EP 2904624 A1 EP2904624 A1 EP 2904624A1
Authority
EP
European Patent Office
Prior art keywords
electrode
contact
switching device
magnetic field
fixed 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.)
Granted
Application number
EP13798977.8A
Other languages
German (de)
French (fr)
Other versions
EP2904624B1 (en
Inventor
Karsten Freundt
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
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Publication of EP2904624A1 publication Critical patent/EP2904624A1/en
Application granted granted Critical
Publication of EP2904624B1 publication Critical patent/EP2904624B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/18—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
    • 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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6641—Contacts; Arc-extinguishing means, e.g. arcing rings making use of a separate coil
    • 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
    • H01H2009/365—Metal parts using U-shaped plates

Definitions

  • the invention relates to a switching device having a Needlessys ⁇ system of a moving contact and a fixed contact, and an arc extinguishing device.
  • Switchgear with a contact system consisting of a moving contact and a fixed contact and an arc extinguishing device are known from the state of the art, for example in the field of low voltage as a switch with a fixed contact and a rotatably mounted moving contact, wherein an arc extinguishing device is provided in the form of quenching.
  • the medium-voltage range switching devices are known, for example, as vacuum interrupters, which have a vacuum-tight housing vacuum-movably led out moving contact and also vacuum-tight led out of the vacuum housing fixed contact, which form a contact system within the vacuum housing, the arc extinguishing device through slots in the contacts of the contact system is formed, which slots are provided for generating a magnetic field and lead to the expansion or rotation of an arc, which is erased at a current zero crossing.
  • Object of the present invention is to provide a switching device, which has improved arc extinguishing properties.
  • a Heidelbergge ⁇ advises with a contact system of a moving contact, which is movable along a direction of movement, and a fixed contact, and an arc extinguishing device with an arrangement for generating a in a plane perpendicular to
  • Such a switching device has improved arc extinguishing ⁇ properties because the arrangement for generating egg nes magnetic field and the electrode arrangement A in the case of ei ⁇ nes short-circuit current at separate contact system occurring defects ⁇ tender arc having as the plasma electrically conductive particles, and since the in Magnetic field formed in the arrangement for generating the magnetic field in the electrode arrangement of the first and second electrode an electrical
  • Field can be generated because the charged, electrically conductive particles of the plasma of the arc move due to the movement in the magnetic field to the electrodes, and build there an electric field, which leads to the generation of a countercurrent, which is formed opposite to the external applied voltage and thus counteracts the arc ⁇ burning voltage and causes the arc extinguishing or supported.
  • a countercurrent which is formed opposite to the external applied voltage and thus counteracts the arc ⁇ burning voltage and causes the arc extinguishing or supported.
  • Particularly advantageous in such a ⁇ type switching device is that it can be used for both DC voltage operation as well as AC operation, because the electric field formed by the magnetic field generating arrangement and the electrode array at DC voltage operation for arc extinction and sufficient for AC operation, the same effect during a half - Wave of the alternating current is also sufficient to counteract the Lichtbo ⁇ genbrennschreib and to support the arc extinguishing.
  • the underlying principle is that of a known in itself magnetohydrodynamic generator,
  • Magnetic field on the conductive particles on an electric ⁇ denanssen generates an electric field and the DC current river leads.
  • This electric field generated in the electrode assembly is in the switching device according to the invention advantageously the outer voltage applied and thus the arc voltage aligned opposite and causes or thus supports advantageously the arc extinguishing.
  • the arrangement for generating the magnetic field comprises a U-shaped iron core whose base is arranged between the fixed contact and a current loop forming electrical connection line of the fixed contact and the two legs extend along the contact system to this.
  • a type of SLOT motor is formed by the U-shaped iron core in the arrangement according to the advantageous embodiment, in which when a sufficiently high current between the legs of the U-shaped iron core occurs, a magnetic field is generated, which is a force on the Moving contact of the contact system exerts, which leads to the opening of the contact system.
  • a force on the electrically conductive particles or particles of the plasma stream is ensured by this arrangement of the U-shaped iron core and the magnetic field ⁇ generated thereby, which can be exploited for the construction of the opposing field on the electrode assembly.
  • the first electrode extends laterally from the movable contact toward the fixed contact and the second electrode since ⁇ Lich from the stationary contact towards the movable contact in such a way that, when broken contact system, the first electrode and the second electrode to the one between Moving contact and the fixed contact formed gap along the same extend.
  • the moving contact is electrically isolated with a drive mechanically coupled and conductively connected by a first sliding contact with a first electrical connection of the switching device.
  • a sliding contact and a flexible conductor can serve for connection.
  • Such sliding contact or flexible conductor is a simple Mög ⁇ probability to electrically conductively connect a first electrical connection of the switching ⁇ device with the moving contact and at the same time to ensure the movement of the moving contact to open or close the contact system of the switching device to ge ⁇ .
  • the first electrode via a second sliding contact with the ers ⁇ th electrical connection of the switching device is conducting verbun ⁇ .
  • the second sliding contact can also serve a two ⁇ ter flexible conductor for connection.
  • Sliding contact or a second flexible conductor for electrically conductive connection of the first electrode to the first electrical connection of the switching device also allows in a simple manner an electrically conductive connection while ensuring the mobility of the moving contact.
  • the contact system and the arc extinguishing apparatus may be arranged differently, for example in a luf ⁇ tisol striv housing.
  • the contact system and the arc extinguishing device are arranged in a vacuum-tight housing, with a moving contact connection pin being led out of the vacuum housing in a vacuum-tight manner.
  • the order the contact system and the arc extinguishing device in a vacuum-tight housing is particularly advantageous when the switching device is to be used in the range of medium voltage, because in such a vacuum interrupter an arc in the form of a metal vapor plasma with extremely high Leitfä ⁇ ability when interrupting the contact system due to a Short-circuit current arises.
  • the short-circuit current which is to be interrupted is high in the region of the medium voltage, so that a large magnetic field can be generated by the arrangement for generating the magnetic field.
  • the electric field that can be generated between the electrode arrangement is sufficient to effect or assist the extinction of the arc.
  • Figure 1 is a schematic view of an amongsa games of a switching device according to the invention with a closed contact system
  • Figure 2 is a schematic plan view of the execution ⁇ example of the switching device according to the invention.
  • FIG. 3 shows a further schematic view of the erfindungsge ⁇ MAESSING switching device with broken Needlessys- system.
  • FIG. 1 shows a schematic view of a switching device 1 with a first electrical connection 2 and a second electrical connection 3 for connection to, for example, a switchgear in the field of power distribution.
  • Switching device 1 is provided for interrupting the power distribution of the switchgear, for example in the case of a lying short circuit, which is detectable by a control device not shown figuratively and leads to initiate a drive movement in a figuratively also not shown drive the switching device 1, whereby a contact system 4 of the switching device 1 can be interrupted.
  • the contact system 4 comprises a fixed contact 5, which is arranged stationary and is conductively connected to the second electrical connection 3 via a current loop 6, and a moving contact 7, which by means of an electrical line 8 and a first sliding contact 9 with the first electrical connection 2 is conductively connected and mechanically coupled by means of a drive rod 10, which is electrically insulating, with the drive of the switching device 1, not shown figuratively.
  • sliding contact 9 may also serve a flexible conductor, for example in the form of a current band or the like, for conductive connection.
  • a bearing 11 is provided on the drive rod 10 in order to ensure a guided movement of the drive rod and to absorb any transverse forces that may occur.
  • the moving contact 7 is moved in a direction of movement when initiating a drive movement and unlatching of the latched in normal operation drive rod in the embodiment of Figure 1 or when the short circuit has been eliminated and the contact system is due to be closed again by a control command, in a downward direction moved, indicated by the movement direction arrow designated 12.
  • An arrangement 13 for generating a magnetic field is provided, which is formed by a U-shaped iron core 14, of which only the base 15 can be seen in the figure 1, which is arranged between the fixed contact 5 and the current loop 6 and whose legs of the Base extend around the contact system 4 upwards, as explained in more detail below with reference to Figure 2.
  • the arrangement 13 for generating a magnetic field is provided, in the event of a ⁇ occur the short-circuit current to generate a magnetic field, which in a plane perpendicular to the direction of movement of the Bewegkontak- tes is formed.
  • a first electrode 16 is electrically conductively connected via a second sliding contact 17 to the electrical line 8 and thus to the moving contact 7 or the first electrical connection 2 and extends laterally from the moving contact 7 in the direction of the fixed contact 5.
  • An ⁇ location of the second sliding contact 17 can be used for conductive connection also a fle ible ⁇ conductor, for example in the form of a flexible strip or the like.
  • a second electrode 18 is conductively connected to the current loop 6 and thus to fixed contact 5 or the second electrical connection 3 and extends laterally from the fixed contact 5 in the direction of the moving contact 7, the first electrode 16 and the second electrode 18 being arranged in this way are that they extend around the contact system 4 and the formation of an electric field between the first electrode 16 and the second electrode 18 perpendicular to the movement direction 12 of the moving contact 7 as well as perpendicular to the magnetic field generated by the arrangement 13 for generating a magnetic field is possible.
  • Figure 2 shows a schematic plan view of the Wegge ⁇ advises 1, wherein in the figure 2, the moving contact 7 and the on ⁇ drive rod 10 can be seen, and the base 15 and a first leg 19 and a second leg 20 of the assembly 13 for generating the Magnetic field, with the first
  • Electrode 16 and the second electrode 18 can also be seen in FIG. 2, the first electrode 16 and the second electrode 18 likewise extending around the contact system 4 such that an electric field can be generated which is perpendicular to the direction of movement 12 of the moving contact 7 and perpendicular to the magnetic field of the arrangement 13 from ⁇ chanbar is.
  • the moving contact 7 is shown as a circular contact, the function of the switching device 1 with the arc extinguishing device is independent of the geometric shape of fixed contact 5 and moving contact 7, as long as the above conditions for the electrode assembly and the arrangement for generating the magnetic field are met.
  • the switching device 1 The function of the switching device 1 is explained in more detail with reference to Figure 3, wherein the 3 shows the switching device 1 with already broken contact system 4, wherein a gap 21 is formed between the moving contact 7 and the fixed contact 5, since after detecting the short-circuit current through a control device ent ⁇ disengages the drive rod 10 and the drive has initiated a drive movement in the drive ⁇ rod 10, wherein the opening of the Needlessys ⁇ tems is supported 4 by the arrangement 13 for generating a magnetic field, which in the case of a short-circuit current at first like a SLOT Motor works and creates a repulsion ⁇ force between moving contact and fixed contact, which supports the opening of the contact system 4.
  • geöff ⁇ Neten contact system 4 as shown in Figure 3, an arc is ignited in the space 22 21, shown schematically by the jagged arrows 23 and 24, which forms a metal vapor plasma.
  • the first electrical terminal 2 is provided with negative polarity and the second electrical connection 3 with positive polarity, this may be an externally applied
  • the upward-moving positive charge carriers experience a force to the right which leads them to the first electrode 16 moves, whereas the negative charge carriers undergo a force to the left due to the magnetic field, which moves them to the second electrode 18, so that a counter electric field arises between the first electrode 16 and the second electrode 18, which corresponds to the external applied driving voltage and so that the arc-firing voltage is directed opposite and leads within a very short time to collapse or to extinguish the arc in the space 21.
  • both the drive rod 10 and the electrical leads 8 to the moving contact and possibly to the first electrode 16 to be designed so that both the Be ⁇ movement and the electrical connection of the moving contact 7 vacuum-tight movable introduced into the vacuum-tight housing of Vakum umschaltrschreibe becomes.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

The invention relates to a switching device comprising a contact system, which is made of a movable contact that can be moved along a direction of movement and a fixed contact, and comprising an arc extinguishing device. The aim of the invention is to design such a switching device so as to have improved arc extinguishing properties. This is achieved by a switching device (1) comprising a contact system (4), which is made of a movable contact (7) that can be moved along a direction (12) of movement and a fixed contact (5), and comprising an arc extinguishing device with an arrangement (13) for generating a magnetic field formed on a plane perpendicular to the direction (12) of movement and with an electrode arrangement made of a first electrode (16) connected to the movable contact (7) in a conductive manner and a second electrode (18) connected to the fixed contact in a conductive manner, wherein the first electrode (16) and the second electrode (18) are arranged such that an electric field can be generated between the first electrode (16) and the second electrode (18) perpendicularly to the direction (12) of movement and perpendicularly to the magnetic field.

Description

Beschreibung Schaltgerät Die Erfindung betrifft ein Schaltgerät mit einem Kontaktsys¬ tem aus einem Bewegkontakt und einem Festkontakt sowie einer Lichtbogenlöschvorrichtung . Description switching device The invention relates to a switching device having a Kontaktsys ¬ system of a moving contact and a fixed contact, and an arc extinguishing device.
Schaltgeräte mit einem Kontaktsystem aus einem Bewegkontakt und einem Festkontakt sowie einer Lichtbogenlöschvorrichtung sind aus dem landläufigen Stand der Technik bekannt, beispielsweise im Bereich der Niederspannung als Schalter mit einem Festkontakt und einem drehbar gelagerten Bewegkontakt, wobei eine Lichtbogenlöschvorrichtung in Form von Löschble- chen vorgesehen ist. Im Mittelspannungsbereich sind Schaltgeräte beispielsweise als Vakuumschaltröhren bekannt, welche einen aus einem vakuumdichten Gehäuse vakuumdicht beweglich herausgeführten Bewegkontakt sowie einen ebenfalls vakuumdicht aus dem Vakuumgehäuse herausgeführten Festkontakt auf- weisen, welche ein Kontaktsystem innerhalb des Vakuumgehäuses bilden, wobei die Lichtbogenlöschvorrichtung durch Schlitze in den Kontakten des Kontaktsystems gebildet ist, welche Schlitze zur Erzeugung eines Magnetfeldes vorgesehen sind und zur Aufweitung bzw. Rotation eines Lichtbogens führen, wel- eher bei einem Stromnulldurchgang gelöscht wird. Switchgear with a contact system consisting of a moving contact and a fixed contact and an arc extinguishing device are known from the state of the art, for example in the field of low voltage as a switch with a fixed contact and a rotatably mounted moving contact, wherein an arc extinguishing device is provided in the form of quenching. In the medium-voltage range switching devices are known, for example, as vacuum interrupters, which have a vacuum-tight housing vacuum-movably led out moving contact and also vacuum-tight led out of the vacuum housing fixed contact, which form a contact system within the vacuum housing, the arc extinguishing device through slots in the contacts of the contact system is formed, which slots are provided for generating a magnetic field and lead to the expansion or rotation of an arc, which is erased at a current zero crossing.
Aufgabe der vorliegenden Erfindung ist es, ein Schaltgerät auszubilden, welches über verbesserte Lichtbogenlöscheigenschaften verfügt. Object of the present invention is to provide a switching device, which has improved arc extinguishing properties.
Erfindungsgemäß gelöst wird diese Aufgabe durch ein Schaltge¬ rät mit einem Kontaktsystem aus einem Bewegkontakt, welcher entlang einer Bewegungsrichtung beweglich ist, und einem Festkontakt, sowie einer Lichtbogenlöschvorrichtung mit einer Anordnung zur Erzeugung eines in einer Ebene senkrecht zurAccording to the invention this object is achieved by a Schaltge ¬ advises with a contact system of a moving contact, which is movable along a direction of movement, and a fixed contact, and an arc extinguishing device with an arrangement for generating a in a plane perpendicular to
Bewegungsrichtung ausgebildeten Magnetfeldes und einer Elektrodenanordnung aus einer ersten, mit dem Bewegkontakt leitend verbundenen Elektrode und einer zweiten, mit dem Festkontakt leitend verbundenen Elektrode, wobei die erste und die zweite Elektrode derart angeordnet sind, dass ein elektrisches Feld zwischen der ersten und der zweiten Elektrode senkrecht zur Bewegungsrichtung und senkrecht zum Magnetfeld ausbildbar ist . Movement direction formed magnetic field and an electrode assembly of a first, with the moving contact conductive connected electrode and a second, conductively connected to the fixed contact electrode, wherein the first and the second electrode are arranged such that an electric field between the first and the second electrode perpendicular to the direction of movement and perpendicular to the magnetic field can be formed.
Ein derartiges Schaltgerät weist verbesserte Lichtbogenlösch¬ eigenschaften auf, weil durch die Anordnung zur Erzeugung ei- nes Magnetfeldes und die Elektrodenanordnung ein im Falle ei¬ nes Kurzschlussstromes bei getrenntem Kontaktsystem auftre¬ tender Lichtbogen, welcher als Plasma elektrisch leitfähige Teilchen aufweist, und da das in der Anordnung zur Erzeugung des Magnetfeldes ausgebildete Magnetfeld in der Elektrodenan- Ordnung aus erster und zweiter Elektrode ein elektrischesSuch a switching device has improved arc extinguishing ¬ properties because the arrangement for generating egg nes magnetic field and the electrode arrangement A in the case of ei ¬ nes short-circuit current at separate contact system occurring defects ¬ tender arc having as the plasma electrically conductive particles, and since the in Magnetic field formed in the arrangement for generating the magnetic field in the electrode arrangement of the first and second electrode an electrical
Feld erzeugbar ist, weil sich die geladenen, elektrisch leitfähigen Teilchen des Plasmas des Lichtbogens bedingt durch die Bewegung im Magnetfeld zu den Elektroden bewegen, und dort ein elektrisches Feld aufbauen, das zur Erzeugung eines Gegenstromes führt, welcher der äußeren angelegten Spannung entgegengesetzt ausgebildet ist und somit der Lichtbogen¬ brennspannung entgegenwirkt und die Lichtbogenlöschung bewirkt bzw. unterstützt. Besonders vorteilhaft bei einem der¬ artigen Schaltgerät ist, dass es sowohl für Gleichspannungs- betrieb wie auch für Wechselspannungsbetrieb einsetzbar ist, weil das durch die Magnetfelderzeugungsanordnung und die Elektrodenanordnung ausgebildete elektrische Feld bei Gleich¬ spannungsbetrieb zur Lichtbogenlöschung ausreicht und bei Wechselspannungsbetrieb derselbe Effekt während einer Halb- welle des Wechselstromes ebenfalls ausreicht, um der Lichtbo¬ genbrennspannung entgegenzuwirken und die Lichtbogenlöschung zu unterstützen. Das zu Grunde liegende Prinzip ist dabei das eines an und für sich bekannten magnetohydrodynamischen Generators, bei dem die Bewegung eines Stromes von leitfähigen Partikeln in einem Magnetfeld bedingt durch die Kraft desField can be generated because the charged, electrically conductive particles of the plasma of the arc move due to the movement in the magnetic field to the electrodes, and build there an electric field, which leads to the generation of a countercurrent, which is formed opposite to the external applied voltage and thus counteracts the arc ¬ burning voltage and causes the arc extinguishing or supported. Particularly advantageous in such a ¬ type switching device is that it can be used for both DC voltage operation as well as AC operation, because the electric field formed by the magnetic field generating arrangement and the electrode array at DC voltage operation for arc extinction and sufficient for AC operation, the same effect during a half - Wave of the alternating current is also sufficient to counteract the Lichtbo ¬ genbrennspannung and to support the arc extinguishing. The underlying principle is that of a known in itself magnetohydrodynamic generator, in which the movement of a stream of conductive particles in a magnetic field due to the force of the
Magnetfeldes auf die leitfähigen Partikel an einer Elektro¬ denanordnung ein elektrisches Feld erzeugt und zum DC Strom- fluss führt. Dieses in der Elektrodenanordnung erzeugte elektrische Feld ist bei dem erfindungsgemäßen Schaltgerät vorteilhafterweise der äußeren anliegenden Spannung und damit der Lichtbogenbrennspannung entgegengesetzt ausgerichtet und bewirkt bzw. unterstützt damit in vorteilhafter Weise die Lichtbogenlöschung . Magnetic field on the conductive particles on an electric ¬ denanordnung generates an electric field and the DC current river leads. This electric field generated in the electrode assembly is in the switching device according to the invention advantageously the outer voltage applied and thus the arc voltage aligned opposite and causes or thus supports advantageously the arc extinguishing.
In einer vorteilhaften Ausgestaltung der Erfindung umfasst die Anordnung zur Erzeugung des Magnetfeldes einen U-förmigen Eisenkern, dessen Basis zwischen dem Festkontakt und einer eine Stromschleife bildenden elektrischen Anschlussleitung des Festkontaktes angeordnet ist und dessen beide Schenkel sich entlang des Kontaktsystems um dieses erstrecken. Mit anderen Worten ist durch den U-förmigen Eisenkern in der Anordnung gemäß der vorteilhaften Ausgestaltung eine Art SLOT-Motor gebildet, bei welchem beim Auftreten eines ausreichend hohen Stromes zwischen den Schenkeln des U-förmigen Eisenkernes ein Magnetfeld erzeugt wird, welches eine Kraft auf den Bewegkontakt des Kontaktsystems ausübt, die zum Öffnen des Kontaktsystems führt. Weiterhin ist durch diese Anordnung des U-förmigen Eisenkernes und das dadurch erzeugte Magnet¬ feld auch eine Kraft auf die elektrisch leitfähigen Partikel bzw. Teilchen des Plasmastromes gewährleistet, welche zum Aufbau des Gegenfeldes an der Elektrodenanordnung ausnutzbar ist . In an advantageous embodiment of the invention, the arrangement for generating the magnetic field comprises a U-shaped iron core whose base is arranged between the fixed contact and a current loop forming electrical connection line of the fixed contact and the two legs extend along the contact system to this. In other words, a type of SLOT motor is formed by the U-shaped iron core in the arrangement according to the advantageous embodiment, in which when a sufficiently high current between the legs of the U-shaped iron core occurs, a magnetic field is generated, which is a force on the Moving contact of the contact system exerts, which leads to the opening of the contact system. Furthermore, a force on the electrically conductive particles or particles of the plasma stream is ensured by this arrangement of the U-shaped iron core and the magnetic field ¬ generated thereby, which can be exploited for the construction of the opposing field on the electrode assembly.
In einer besonders vorteilhaften Ausgestaltung der Erfindung erstreckt sich die erste Elektrode seitlich vom Bewegkontakt in Richtung des Festkontaktes und die zweite Elektrode seit¬ lich vom Festkontakt in Richtung des Bewegkontaktes derart, dass sich bei unterbrochenen Kontaktsystem die erste Elektrode und die zweite Elektrode um einen zwischen dem Bewegkontakt und dem Festkontakt gebildeten Zwischenraum entlang des- selben erstrecken. Durch eine derartige Anordnung von erster Elektrode und zweiter Elektrode ist ein geometrisch einfacher Aufbau realisiert, mit dem eine Ausbildung des elektrischen Feldes zwischen der ersten Elektrode und der zweiten Elektrode senkrecht zur Bewegungsrichtung des Bewegkontaktes und senkrecht zum Magnetfeld ermöglicht ist entsprechend dem Kreuzprodukt aus Stromrichtung und Magnetischer Feldrichtung. In a particularly advantageous embodiment of the invention, the first electrode extends laterally from the movable contact toward the fixed contact and the second electrode since ¬ Lich from the stationary contact towards the movable contact in such a way that, when broken contact system, the first electrode and the second electrode to the one between Moving contact and the fixed contact formed gap along the same extend. By such an arrangement of the first electrode and the second electrode, a geometrically simple structure is realized, with the formation of the electrical Field between the first electrode and the second electrode perpendicular to the direction of movement of the moving contact and perpendicular to the magnetic field is possible according to the cross product of the current direction and magnetic field direction.
In einer besonders vorteilhaften Ausgestaltung der Erfindung ist der Bewegkontakt elektrisch isoliert mit einem Antrieb mechanisch gekoppelt und mittels eines ersten Gleitkontaktes mit einem ersten elektrischen Anschluss des Schaltgerätes leitend verbunden. Anstelle eines Gleitkontaktes kann auch ein flexibler Leiter zur Verbindung dienen. Ein derartiger Gleitkontakt oder flexibler Leiter stellt eine einfache Mög¬ lichkeit dar, einen ersten elektrischen Anschluss des Schalt¬ gerätes mit dem Bewegkontakt elektrisch leitend zu verbinden und gleichzeitig die Bewegung des Bewegkontaktes zum Öffnen bzw. Schließen des Kontaktsystems des Schaltgerätes zu ge¬ währleisten . In a particularly advantageous embodiment of the invention, the moving contact is electrically isolated with a drive mechanically coupled and conductively connected by a first sliding contact with a first electrical connection of the switching device. Instead of a sliding contact and a flexible conductor can serve for connection. Such sliding contact or flexible conductor is a simple Mög ¬ probability to electrically conductively connect a first electrical connection of the switching ¬ device with the moving contact and at the same time to ensure the movement of the moving contact to open or close the contact system of the switching device to ge ¬ .
In weiterer vorteilhafter Ausgestaltung der Erfindung ist die erste Elektrode über einen zweiten Gleitkontakt mit dem ers¬ ten elektrischen Anschluss des Schaltgerätes leitend verbun¬ den. Anstelle des zweiten Gleitkontaktes kann auch ein zwei¬ ter flexibler Leiter zur Verbindung dienen. Ein zweiter In a further advantageous embodiment of the invention, the first electrode via a second sliding contact with the ers ¬ th electrical connection of the switching device is conducting verbun ¬. Instead of the second sliding contact can also serve a two ¬ ter flexible conductor for connection. A second
Gleitkontakt oder ein zweiter flexibler Leiter zur elektrisch leitenden Verbindung der ersten Elektrode mit dem ersten elektrischen Anschluss des Schaltgerätes ermöglicht ebenfalls in einfacher Weise eine elektrisch leitende Verbindung bei gleichzeitiger Gewährleistung der Beweglichkeit des Bewegkontaktes . Sliding contact or a second flexible conductor for electrically conductive connection of the first electrode to the first electrical connection of the switching device also allows in a simple manner an electrically conductive connection while ensuring the mobility of the moving contact.
Das Kontaktsystem und die Lichtbogenlöschvorrichtung können unterschiedlich angeordnet sein, beispielsweise in einem luf¬ tisolierten Gehäuse. In einer besonders vorteilhaften Ausgestaltung der Erfindung sind das Kontaktsystem und die Lichtbo- genlöschvorrichtung in einem vakuumdichten Gehäuse angeordnet, wobei ein Bewegkontaktanschlussbolzen vakuumdicht beweglich aus dem Vakuumgehäuse herausgeführt ist. Die Anordnung des Kontaktsystems und der Lichtbogenlöschvorrichtung in einem vakuumdichten Gehäuse ist besonders vorteilhaft, wenn das Schaltgerät im Bereich der Mittelspannung eingesetzt werden soll, weil in einer derartigen Vakuumschaltröhre ein Lichtbo- gen in Form eines Metalldampfplasmas mit extrem hoher Leitfä¬ higkeit beim Unterbrechen des Kontaktsystems bedingt durch einen Kurzschlussstrom entsteht. Weiterhin ist der Kurzschlussstrom, welcher unterbrochen werden soll, im Bereich der Mittelspannung hoch, so dass durch die Anordnung zur Er- zeugung des Magnetfeldes ein großes Magnetfeld erzeugbar ist. Bei einer gleichzeitig relativ geringen Lichtbogenspannung des Lichtbogens in der Vakuumschaltröhre ist das zwischen der Elektrodenanordnung erzeugbare elektrische Feld ausreichend, um die Löschung des Lichtbogens zu bewirken bzw. zu unter- stützen. The contact system and the arc extinguishing apparatus may be arranged differently, for example in a luf ¬ tisolierten housing. In a particularly advantageous embodiment of the invention, the contact system and the arc extinguishing device are arranged in a vacuum-tight housing, with a moving contact connection pin being led out of the vacuum housing in a vacuum-tight manner. The order the contact system and the arc extinguishing device in a vacuum-tight housing is particularly advantageous when the switching device is to be used in the range of medium voltage, because in such a vacuum interrupter an arc in the form of a metal vapor plasma with extremely high Leitfä ¬ ability when interrupting the contact system due to a Short-circuit current arises. Furthermore, the short-circuit current which is to be interrupted is high in the region of the medium voltage, so that a large magnetic field can be generated by the arrangement for generating the magnetic field. In the case of a simultaneously relatively low arc voltage of the arc in the vacuum interrupter, the electric field that can be generated between the electrode arrangement is sufficient to effect or assist the extinction of the arc.
Die Erfindung wird im Folgenden anhand der Zeichnung und eines Ausführungsbeispiels mit Bezug auf die beiliegenden Figu¬ ren näher erläutert. Es zeigen: The invention is explained in more detail below with reference to the drawing and an embodiment with reference to the accompanying Figu ¬ ren. Show it:
Figur 1 eine schematische Ansicht eines Ausführungsbei¬ spiels eines erfindungsgemäßen Schaltgerätes mit geschlossenem Kontaktsystem; Figur 2 eine schematische Draufsicht auf das Ausführungs¬ beispiel des erfindungsgemäßen Schaltgerätes; und Figure 1 is a schematic view of an Ausführungsbei ¬ game of a switching device according to the invention with a closed contact system; Figure 2 is a schematic plan view of the execution ¬ example of the switching device according to the invention; and
Figur 3 eine weitere schematische Ansicht des erfindungsge¬ mäßen Schaltgerätes mit unterbrochenem Kontaktsys- tem. 3 shows a further schematic view of the erfindungsge ¬ MAESSING switching device with broken Kontaktsys- system.
Figur 1 zeigt eine schematische Ansicht eines Schaltgerätes 1 mit einem ersten elektrischen Anschluss 2 und einem zweiten elektrischen Anschluss 3 zum Verbinden mit beispielsweise ei- ner Schaltanlage im Bereich der Energieverteilung. Das FIG. 1 shows a schematic view of a switching device 1 with a first electrical connection 2 and a second electrical connection 3 for connection to, for example, a switchgear in the field of power distribution. The
Schaltgerät 1 ist vorgesehen zum Unterbrechen der Energieverteilung der Schaltanlage beispielsweise im Falle eines vor- liegenden Kurzschlusses, welcher von einer figürlich nicht dargestellten Steuerungseinrichtung detektierbar ist und zum Einleiten einer Antriebsbewegung in einen figürlich ebenfalls nicht dargestellten Antrieb des Schaltgerätes 1 führt, wo- durch ein Kontaktsystem 4 des Schaltgerätes 1 unterbrochen werden kann. Das Kontaktsystem 4 umfasst einen Festkontakt 5, welcher ortsfest angeordnet ist und über eine Stromschleife 6 mit dem zweiten elektrischen Anschluss 3 leitend verbunden ist, sowie einen Bewegkontakt 7, welcher mittels einer elekt- rischen Leitung 8 und einem ersten Gleitkontakt 9 mit dem ersten elektrischen Anschluss 2 leitend verbunden ist und mittels einer Antriebsstange 10, welche elektrisch isolierend ausgebildet ist, mit dem figürlich nicht dargestellten Antrieb des Schaltgerätes 1 mechanisch gekoppelt ist. Anstelle des Gleitkontaktes 9 kann auch ein flexibler Leiter, beispielsweise in Form eines Strombandes oder dergleichen, zur leitenden Verbindung dienen. Ein Lager 11 ist an der Antriebsstange 10 vorgesehen, um eine geführte Bewegung der Antriebsstange zu gewährleisten und eventuell auftretende Quer- kräfte aufzunehmen. Der Bewegkontakt 7 wird beim Einleiten einer Antriebsbewegung und Entklinken der im Normalbetrieb verklinkten Antriebsstange im Ausführungsbeispiel der Figur 1 in eine Bewegungsrichtung nach oben bewegt bzw. wenn der Kurzschluss beseitigt wurde und das Kontaktsystem bedingt durch einen Steuerungsbefehl wieder geschlossen werden soll, in eine Richtung nach unten bewegt, angedeutet durch den mit 12 bezeichneten Bewegungsrichtungspfeil. Eine Anordnung 13 zur Erzeugung eines Magnetfeldes ist vorgesehen, welche durch einen U-förmigen Eisenkern 14 gebildet ist, von dem in der Figur 1 lediglich die Basis 15 erkennbar ist, welche zwischen dem Festkontakt 5 und der Stromschleife 6 angeordnet ist und deren Schenkel von der Basis hinweg um das Kontaktsystem 4 nach oben erstrecken, wie weiter unten mit Bezug auf die Figur 2 näher erläutert. Die Anordnung 13 zur Erzeugung eines Magnetfeldes ist dabei vorgesehen, im Falle eines auftreten¬ den Kurzschlussstromes ein Magnetfeld zu erzeugen, welches in einer Ebene senkrecht zur Bewegungsrichtung des Bewegkontak- tes ausgebildet wird. Eine erste Elektrode 16 ist über einen zweiten Gleitkontakt 17 mit der elektrischen Leitung 8 und damit mit dem Bewegkontakt 7 bzw. dem ersten elektrischen An- schluss 2 elektrisch leitend verbunden und erstreckt sich vom Bewegkontakt 7 in Richtung des Festkontaktes 5 seitlich. An¬ stelle des zweiten Gleitkontaktes 17 kann ebenfalls ein fle¬ xibler Leiter, beispielsweise in Form eines Strombandes oder dergleichen, zur leitenden Verbindung dienen. Eine zweite Elektrode 18 ist mit der Stromschleife 6 und damit mit Fest- kontakt 5 bzw. dem zweiten elektrischen Anschluss 3 leitend verbunden und erstreckt sich vom Festkontakt 5 seitlich in Richtung des Bewegkontaktes 7, wobei die erste Elektrode 16 und die zweite Elektrode 18 derart angeordnet sind, dass sie sich um das Kontaktsystem 4 herum erstrecken und das Ausbil- den eines elektrischen Feldes zwischen der ersten Elektrode 16 und der zweiten Elektrode 18 senkrecht zur Bewegungsrichtung 12 des Bewegkontaktes 7 wie auch senkrecht zum von der Anordnung 13 zur Erzeugung eines Magnetfeldes erzeugten Magnetfeldes ermöglicht ist. Switching device 1 is provided for interrupting the power distribution of the switchgear, for example in the case of a lying short circuit, which is detectable by a control device not shown figuratively and leads to initiate a drive movement in a figuratively also not shown drive the switching device 1, whereby a contact system 4 of the switching device 1 can be interrupted. The contact system 4 comprises a fixed contact 5, which is arranged stationary and is conductively connected to the second electrical connection 3 via a current loop 6, and a moving contact 7, which by means of an electrical line 8 and a first sliding contact 9 with the first electrical connection 2 is conductively connected and mechanically coupled by means of a drive rod 10, which is electrically insulating, with the drive of the switching device 1, not shown figuratively. Instead of the sliding contact 9 may also serve a flexible conductor, for example in the form of a current band or the like, for conductive connection. A bearing 11 is provided on the drive rod 10 in order to ensure a guided movement of the drive rod and to absorb any transverse forces that may occur. The moving contact 7 is moved in a direction of movement when initiating a drive movement and unlatching of the latched in normal operation drive rod in the embodiment of Figure 1 or when the short circuit has been eliminated and the contact system is due to be closed again by a control command, in a downward direction moved, indicated by the movement direction arrow designated 12. An arrangement 13 for generating a magnetic field is provided, which is formed by a U-shaped iron core 14, of which only the base 15 can be seen in the figure 1, which is arranged between the fixed contact 5 and the current loop 6 and whose legs of the Base extend around the contact system 4 upwards, as explained in more detail below with reference to Figure 2. The arrangement 13 for generating a magnetic field is provided, in the event of a ¬ occur the short-circuit current to generate a magnetic field, which in a plane perpendicular to the direction of movement of the Bewegkontak- tes is formed. A first electrode 16 is electrically conductively connected via a second sliding contact 17 to the electrical line 8 and thus to the moving contact 7 or the first electrical connection 2 and extends laterally from the moving contact 7 in the direction of the fixed contact 5. An ¬ location of the second sliding contact 17 can be used for conductive connection also a fle ible ¬ conductor, for example in the form of a flexible strip or the like. A second electrode 18 is conductively connected to the current loop 6 and thus to fixed contact 5 or the second electrical connection 3 and extends laterally from the fixed contact 5 in the direction of the moving contact 7, the first electrode 16 and the second electrode 18 being arranged in this way are that they extend around the contact system 4 and the formation of an electric field between the first electrode 16 and the second electrode 18 perpendicular to the movement direction 12 of the moving contact 7 as well as perpendicular to the magnetic field generated by the arrangement 13 for generating a magnetic field is possible.
Figur 2 zeigt eine schematische Draufsicht auf das Schaltge¬ rät 1, wobei in der Figur 2 der Bewegkontakt 7 sowie die An¬ triebsstange 10 erkennbar sind, sowie die Basis 15 und ein erster Schenkel 19 und ein zweiter Schenkel 20 der Anordnung 13 zur Erzeugung des Magnetfeldes, wobei sich der erste Figure 2 shows a schematic plan view of the Schaltge ¬ advises 1, wherein in the figure 2, the moving contact 7 and the on ¬ drive rod 10 can be seen, and the base 15 and a first leg 19 and a second leg 20 of the assembly 13 for generating the Magnetic field, with the first
Schenkel 19 und der zweite Schenkel 20 von der Basis 15 nach oben das Kontaktsystem 4 umgebend erstrecken. Die erste  Leg 19 and the second leg 20 from the base 15 upwardly extend the contact system 4 surrounding. The first
Elektrode 16 sowie die zweite Elektrode 18 sind ebenfalls in der Figur 2 erkennbar, wobei die erste Elektrode 16 und die zweite Elektrode 18 sich ebenfalls um das Kontaktsystem 4 derart herum erstrecken, dass ein elektrisches Feld erzeugbar ist, welches senkrecht zur Bewegungsrichtung 12 des Bewegkontaktes 7 und senkrecht zum Magnetfeld der Anordnung 13 aus¬ bildbar ist. In der Figur 2 ist der Bewegkontakt 7 als kreis- runder Kontakt dargestellt, die Funktion des Schaltgerätes 1 mit der Lichtbogenlöschvorrichtung ist aber unabhängig von der geometrischen Form von Festkontakt 5 und Bewegkontakt 7, solange die obigen Bedingungen für die Elektrodenanordnung und die Anordnung zur Erzeugung des Magnetfeldes erfüllt sind . Die Funktion des Schaltgerätes 1 wird mit Bezug auf die Figur 3 näher erläutert, wobei die Figur 3 das Schaltgerät 1 mit bereits unterbrochenem Kontaktsystem 4 zeigt, wobei ein Zwischenraum 21 zwischen dem Bewegkontakt 7 und dem Festkontakt 5 gebildet ist, da nach Feststellen des Kurzschlussstromes durch eine Steuerungsvorrichtung die Antriebstange 10 ent¬ klinkt und der Antrieb eine Antriebsbewegung in die Antriebs¬ stange 10 eingeleitet hat, wobei das Öffnen des Kontaktsys¬ tems 4 unterstützt wird durch die Anordnung 13 zur Erzeugung eines Magnetfeldes, welche im Falle eines Kurzschlussstromes zunächst wie ein SLOT-Motor funktioniert und eine Abstoßungs¬ kraft zwischen Bewegkontakt und Festkontakt erzeugt, die das Öffnen des Kontaktsystems 4 unterstützt. Im Falle des geöff¬ neten Kontaktsystems 4 wie in der Figur 3 dargestellt, wird ein Lichtbogen 22 im Zwischenraum 21 gezündet, schematisch dargestellt durch die gezackten Pfeile 23 und 24, welcher ein Metalldampfplasma bildet. Im Ausführungsbeispiel der Figur 3 ist der erste elektrische Anschluss 2 mit negativer Polarität versehen und der zweite elektrische Anschluss 3 mit positiver Polarität, dies kann entsprechend eine äußere angelegte Electrode 16 and the second electrode 18 can also be seen in FIG. 2, the first electrode 16 and the second electrode 18 likewise extending around the contact system 4 such that an electric field can be generated which is perpendicular to the direction of movement 12 of the moving contact 7 and perpendicular to the magnetic field of the arrangement 13 from ¬ bildbar is. In the figure 2, the moving contact 7 is shown as a circular contact, the function of the switching device 1 with the arc extinguishing device is independent of the geometric shape of fixed contact 5 and moving contact 7, as long as the above conditions for the electrode assembly and the arrangement for generating the magnetic field are met. The function of the switching device 1 is explained in more detail with reference to Figure 3, wherein the 3 shows the switching device 1 with already broken contact system 4, wherein a gap 21 is formed between the moving contact 7 and the fixed contact 5, since after detecting the short-circuit current through a control device ent ¬ disengages the drive rod 10 and the drive has initiated a drive movement in the drive ¬ rod 10, wherein the opening of the Kontaktsys ¬ tems is supported 4 by the arrangement 13 for generating a magnetic field, which in the case of a short-circuit current at first like a SLOT Motor works and creates a repulsion ¬ force between moving contact and fixed contact, which supports the opening of the contact system 4. In the case of geöff ¬ Neten contact system 4 as shown in Figure 3, an arc is ignited in the space 22 21, shown schematically by the jagged arrows 23 and 24, which forms a metal vapor plasma. In the embodiment of Figure 3, the first electrical terminal 2 is provided with negative polarity and the second electrical connection 3 with positive polarity, this may be an externally applied
Gleichspannung bzw. die Polarität innerhalb einer Halbwelle eines äußeren angelegten Wechselstromes sein. Während diese Polarität derart vorliegt, fließt ein technischer Strom ent¬ sprechend den mit i gekennzeichneten Strompfeilen, wobei somit elektrisch positiv geladene Teilchen sich entsprechend der technischen Stromrichtung im Zwischenraum 21 vom Festkontakt 5 zum Bewegkontakt 7 hin bewegen und entsprechend elekt¬ risch negativ geladene Teilchen sich vom Bewegkontakt 7 zum Festkontakt 5 nach unten bewegen. Durch das von der Anordnung 13 erzeugte Magnetfeld, welches sich in der Figur 3 aus der Zeichnungsebene heraus erstreckt und mit B bezeichnet ist, erfahren die sich nach oben bewegenden positiven Ladungsträger eine Kraft nach rechts, welche sie zur ersten Elektrode 16 bewegt, wohingegen die negativen Ladungsträger durch das Magnetfeld eine Kraft nach links erfahren, welche sie zur zweiten Elektrode 18 bewegt, so dass zwischen der ersten Elektrode 16 und der zweiten Elektrode 18 ein elektrisches Gegen-Feld entsteht, welches der äußeren angelegten treibenden Spannung und damit auch der Lichtbogenbrennspannung entgegengesetzt gerichtet ist und innerhalb kürzester Zeit zum Zusammenbrechen bzw. zum Löschen des Lichtbogens im Zwischenraum 21 führt. DC voltage or the polarity within a half-wave of an external applied alternating current. During this polarity is present in such a way a technical current flows ent ¬ speaking the flow arrows marked with i, where thus electrically positively charged particles move in accordance with the technical current direction in the intermediate space 21 from the fixed contact 5 to the movable contact 7 toward and correspondingly elekt ¬ driven negatively charged particles move from the moving contact 7 to the fixed contact 5 down. As a result of the magnetic field generated by the arrangement 13, which extends out of the plane of the drawing in FIG. 3 and is designated B, the upward-moving positive charge carriers experience a force to the right which leads them to the first electrode 16 moves, whereas the negative charge carriers undergo a force to the left due to the magnetic field, which moves them to the second electrode 18, so that a counter electric field arises between the first electrode 16 and the second electrode 18, which corresponds to the external applied driving voltage and so that the arc-firing voltage is directed opposite and leads within a very short time to collapse or to extinguish the arc in the space 21.
Figürlich nicht weiter dargestellt, aber besonders vorteil¬ haft ist die Anordnung des Schaltgerätes 1 in einem vakuum¬ dichten Gehäuse, so dass, mit anderen Worten, eine Vakuumschaltröhre gebildet ist, welche das Kontaktsystem 4, die An- Ordnung 13 zur Erzeugung des Magnetfeldes und die Elektrodenanordnung aus erster Elektrode 16 und zweiter Elektrode 18 entsprechend im vakuumdichten Gehäuse aufnimmt. Bei den im Bereich der Mittelspannung herrschenden Bedingungen unterstützt eine derartige Anordnung die Lichtbogenlöschung beson- ders effektiv. Dazu sind sowohl die Antriebsstange 10 als auch die elektrischen Leitungen 8 zum Bewegkontakt und ggf. Zur ersten Elektrode 16 so zu gestalten, dass sowohl die Be¬ wegung als auch der elektrische Anschluss des Bewegkontaktes 7 vakuumdicht beweglich in das vakuumdichte Gehäuse der Vaku- umschaltröhre eingeführt wird. Figurative not shown but particularly advantageous ¬ way, the arrangement of the switching device 1 in a vacuum ¬ tight housing so that, in other words, a vacuum interrupter is formed that the contact system 4, the arrival order 13 for generating the magnetic field, and the electrode assembly of the first electrode 16 and the second electrode 18 accommodates correspondingly in the vacuum-tight housing. In the case of the conditions prevailing in the range of medium voltage, such an arrangement supports the arc quenching particularly effectively. For this purpose, both the drive rod 10 and the electrical leads 8 to the moving contact and possibly to the first electrode 16 to be designed so that both the Be ¬ movement and the electrical connection of the moving contact 7 vacuum-tight movable introduced into the vacuum-tight housing of Vakum umschaltröhre becomes.
Bezugs zeichenliste Reference sign list
1 Schaltgerät 1 switching device
2 erster elektrischer Anschluss 2 first electrical connection
3 zweiter elektrischer Anschluss3 second electrical connection
4 KontaktSystem 4 contact system
5 Festkontakt  5 fixed contact
6 Stromschleife  6 current loop
7 Bewegkontakt  7 moving contact
8 elektrische Leitung  8 electrical line
9 erster Gleitkontakt  9 first sliding contact
10 AntriebsStange  10 drive rod
11 Lager  11 bearings
12 Bewegungsrichtung  12 direction of movement
13 Anordnung  13 arrangement
14 U-förmiger Eisenkern  14 U-shaped iron core
15 Basis  15 basis
16 erste Elektrode  16 first electrode
17 zweiter Gleitkontakt  17 second sliding contact
18 zweite Elektrode  18 second electrode
19 erster Schenkel  19 first leg
20 zweiter Schenkel  20 second leg
21 Zwischenraum  21 gap
22 Lichtbogen  22 arc
23, 24 Lichtbogenpfeile  23, 24 arc arrows

Claims

Patentansprüche claims
1. Schaltgerät (1) mit einem Kontaktsystem (4) aus einem Bewegkontakt (7), welcher entlang einer Bewegungsrichtung (12) beweglich ist, und einem Festkontakt (5) , sowie einer Licht¬ bogenlöschvorrichtung mit einer Anordnung (13) zur Erzeugung eines in einer Ebene senkrecht zur Bewegungsrichtung (12) ausgebildeten Magnetfeldes und einer Elektrodenanordnung aus einer ersten, mit dem Bewegkontakt (7) leitend verbundenen Elektrode (16) und einer zweiten, mit dem Festkontakt leitend verbundenen Elektrode (18), wobei die erste Elektrode (16) und die zweite Elektrode (18) derart angeordnet sind, dass ein elektrisches Feld zwischen der ersten Elektrode (16) und der zweiten Elektrode (18) senkrecht zur Bewegungsrichtung (12) und senkrecht zum Magnetfeld ausbildbar ist. 1. switching device (1) with a contact system (4) from a moving contact (7) which along a direction of movement (12) is movable, and a fixed contact (5), and a light ¬ arc extinguishing device with an arrangement (13) for generating a in a plane perpendicular to the direction of movement (12) formed magnetic field and an electrode assembly of a first, with the moving contact (7) conductively connected electrode (16) and a second, conductively connected to the fixed contact electrode (18), wherein the first electrode (16 ) and the second electrode (18) are arranged such that an electric field between the first electrode (16) and the second electrode (18) perpendicular to the direction of movement (12) and perpendicular to the magnetic field can be formed.
2. Schaltgerät (1) nach Anspruch 1, 2. Switching device (1) according to claim 1,
d a d u r c h g e k e n n z e i c h n e t , d a s s die Anordnung (13) zur Erzeugung des Magnetfeldes einen U- förmigen Eisenkern (14) umfasst, dessen Basis (15) zwischen dem Festkontakt (5) und einer eine Stromschleife (6) bilden¬ den elektrischen Anschlussleitung des Festkontaktes (5) angeordnet ist und dessen beide Schenkel (19, 20) sich entlang des Kontaktsystems (4) um dieses erstrecken. characterized in that the arrangement (13) for generating the magnetic field comprises a U-shaped iron core (14) whose base (15) between the fixed contact (5) and a current loop (6) form ¬ the electrical connection line of the fixed contact (5) is arranged and the two legs (19, 20) along the contact system (4) extend around this.
3. Schaltgerät (1) nach Anspruch 2, 3. Switching device (1) according to claim 2,
d a d u r c h g e k e n n z e i c h n e t , d a s s sich die erste Elektrode (16) seitlich vom Bewegkontakt (7) in Richtung des Festkontaktes (5) und die zweite Elektrode (18) seitlich vom Festkontakt (5) in Richtung des Bewegkontaktes (7) derart erstreckt, dass sich bei unterbrochenen Kontaktsystem (4) die erste Elektrode (16) und die zweite Elektrode (18) um einen zwischen dem Bewegkontakt (7) und dem Festkontakt (5) gebildeten Zwischenraum (21) entlang dessel- ben erstrecken. characterized in that the first electrode (16) extends laterally from the moving contact (7) in the direction of the fixed contact (5) and the second electrode (18) laterally from the fixed contact (5) in the direction of the moving contact (7) such that when interrupted Contact system (4) the first electrode (16) and the second electrode (18) extend around a between the moving contact (7) and the fixed contact (5) formed intermediate space (21) along the same ben.
4. Schaltgerät (1) nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , d a s s der Bewegkontakt (7) elektrisch isoliert mit einem Antrieb mechanisch gekoppelt und mittels eines ersten Gleitkontaktes (9) oder eines flexiblen Leiters mit einem ersten elektri- sehen Anschluss (2) des Schaltgerätes (1) leitend verbunden ist . 4. Switching device (1) according to one of claims 1 to 3, characterized in that the moving contact (7) electrically isolated with a drive mechanically coupled and by means of a first sliding contact (9) or a flexible conductor with a first electrical connection see (2) of the switching device (1) is conductively connected.
5. Schaltgerät (1) nach Anspruch 4, 5. Switching device (1) according to claim 4,
d a d u r c h g e k e n n z e i c h n e t , d a s s die erste Elektrode (16) über einen zweiten Gleitkontakt (17) oder einen zweiten flexiblen Leiter mit dem ersten elektrischen Anschluss (2) des Schaltgerätes (1) leitend verbunden ist . That is, the first electrode (16) is conductively connected to the first electrical terminal (2) of the switching device (1) via a second sliding contact (17) or a second flexible conductor.
6. Schaltgerät (1) nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , d a s s das Kontaktsystem (4) und die Lichtbogenlöschvorrichtung in einem vakuumdichten Gehäuse angeordnet sind, wobei ein Beweg- kontaktanschlussbolzen vakuumdicht beweglich aus dem Vakuum- gehäuse herausgeführt ist. 6. Switching device (1) according to one of the preceding claims, d a d u r c h e c e n e s, the contact system (4) and the arc extinguishing device are arranged in a vacuum-tight housing, wherein a moving contact connection pin is moved out vacuum-tight movable from the vacuum housing.
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DE102012222328B4 (en) 2021-06-02
KR20150093727A (en) 2015-08-18
DE102012222328A1 (en) 2014-06-05
CN104903985A (en) 2015-09-09
CN104903985B (en) 2018-07-20
EP2904624B1 (en) 2018-06-13
WO2014086587A1 (en) 2014-06-12
ZA201503581B (en) 2016-09-28
JP2016502745A (en) 2016-01-28
US9502195B2 (en) 2016-11-22
US20150318129A1 (en) 2015-11-05
JP6022708B2 (en) 2016-11-09

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