EP2416332A1 - Switching device for an electric low voltage switching device - Google Patents

Switching device for an electric low voltage switching device Download PDF

Info

Publication number
EP2416332A1
EP2416332A1 EP10172222A EP10172222A EP2416332A1 EP 2416332 A1 EP2416332 A1 EP 2416332A1 EP 10172222 A EP10172222 A EP 10172222A EP 10172222 A EP10172222 A EP 10172222A EP 2416332 A1 EP2416332 A1 EP 2416332A1
Authority
EP
European Patent Office
Prior art keywords
switching device
contact
low
electrical switch
voltage electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10172222A
Other languages
German (de)
French (fr)
Inventor
Kurt Haendler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eaton Industries GmbH
Original Assignee
Eaton Industries GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eaton Industries GmbH filed Critical Eaton Industries GmbH
Priority to EP10172222A priority Critical patent/EP2416332A1/en
Priority to PCT/EP2011/063562 priority patent/WO2012017090A1/en
Priority to CN2011800480094A priority patent/CN103155071A/en
Priority to EP11739102.9A priority patent/EP2601661A1/en
Priority to US13/814,247 priority patent/US20130192969A1/en
Publication of EP2416332A1 publication Critical patent/EP2416332A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact

Definitions

  • the invention relates to a switching device for an electric
  • Such switching devices typically include single-break or double-break contact arrangements.
  • the switch has an insulating housing, in which two chambers are formed, of which a first chamber acts as an extinguishing chamber and a second chamber with a comparable volume as a connection chamber.
  • a simply interrupting rotary contact is movable in a bearing, wherein the rotary contact is designed as a two-armed lever, the first lever arm carries a contact piece, which comes with a fixed contact on a first power supply rail in switching contact.
  • the second lever arm of the rotary contact is connected to a flexible conductor which is in conductive connection with a second power supply rail.
  • a switching device which includes a double-breaking rotary contact having a switching drive associated with each pole.
  • the rotary contact is rotatably mounted in bearings in the insulating housing about an axis perpendicular to the longitudinal extent of the rotary contact.
  • the actual switch consists of two fixed contacts connected to busbars, and a floating, two-armed trained rotatable contact piece, which carries end contacts, which cooperate with the fixed contact pieces.
  • Two contact pressure springs preferably designed as torsion springs, are supported on a bearing pin on the rotary contact piece and each exert a directed in closing movement torque on the rotary contact piece.
  • the known switching devices thus have a fixed contact and a movable contact piece.
  • the fixed contact limits the distance to be reached between the contacts.
  • DC applications DC applications
  • AC applications AC applications
  • two existing current paths are connected in series.
  • a four-pole AC switching device can be used in which two phases are connected in series, e.g. Moeller switch-disconnector for 1000V DC like N2-4-160-S1-DC up to N4-4-1400-S1-DC.
  • the object of the present invention is to provide a switching device for a low-voltage electrical switching device, in particular for DC applications, which avoids these disadvantages.
  • the switching device is characterized in that there are two movable contact pieces for each phase.
  • the two switching pieces of a phase are mounted via a lever system in the housing of the switching device.
  • this lever system each comprises a guide and a pivot lever, which are each secured with a rigid axle on the housing of the switching device and with a movable axis on the respective contact piece.
  • the swivel lever is moved from the ON position to the OFF position, thereby pivoting the two contact pieces far apart.
  • the switching device is therefore particularly suitable for DC and high voltages where large opening distances are required to shut down.
  • the levers are connected via movable joints with the switching pieces, that the joints move in the case of switching on circular arcs.
  • the levers are made of insulating material.
  • the levers include a core and a shell.
  • the core material of a heavy-duty material, such. Steel or aluminum.
  • the jacket material can consist of insulating material.
  • contact force springs engage the pivoting lever. It has proved to be advantageous to design the contact force springs as tension springs, which exert a force on the contacts in the ON position, which acts in the direction of the respective other contact piece.
  • the contact pieces comprise contact plates at a first end.
  • the trajectory through which the contact plates pass during their switching movement is accompanied by a quenching chamber. It has proved particularly advantageous to design this quenching chamber continuously over the entire trajectory traversed by the contact plates.
  • the switching device according to the invention is suitable for AC applications, but especially for DC applications.
  • FIG. 1 shows a schematic diagram of the switching device (100) according to the invention in the ON position.
  • the shift apparatus (100) includes two movable shift pieces (400) each movably supported at a first end of a guide lever (210) and a swing lever (220) in bearings having movable shafts (216, 226).
  • the guide lever (210) and pivot lever (220) are mounted with their respective second end by means of bearings with a rigid axis (215, 225) in a housing (not shown).
  • the movable axes of the guide levers (216) can move around their rigid-axis guide-lever bearings (215) on a circular path (218) in space.
  • the movable axes of the pivoting levers (226) may also move on a circular path (228) about their rigid-axis pivotal lever bearing (225).
  • the contact force is applied by means of contact force springs (300) which act on the pivoting levers (220). But it is also possible to let contact force springs (300) at other locations of the pivot lever (220) or on the contact pieces (400) attack itself.
  • the pivoting lever (220) is shown here in simplified form to depict the rigid connection of the pivot points (225) and (226). In some embodiments, this function is implemented by a shift shaft.
  • the guide lever (210), as well as the pivot lever (220) may be made of insulating material.
  • the guide (210) and pivot lever (220) of a sandwich with a core and a shell, wherein the core material may be a mechanically stable material that need not be insulating, and the jacket material may consist of a Insulant exist.
  • FIG. 2 is a schematic diagram of the switching device (100) according to the invention shown in the OFF position. Both contact pieces have been rotated in space around the movable axes of guide lever and pivot lever (216, 226), said movable axes (216, 226) have moved on their circular paths (218, 228) accordingly. Although guide and pivot levers (210, 220) have moved only slightly, the end contacts (410) of the contact pieces have moved very far apart. Furthermore, one along the trajectory describing the end contacts (410) in their opening path is a continuous arc quenching chamber (600). In the arc quenching chamber (600) arc extinguishing elements (610) are arranged.
  • These arc quenching elements (610) may include sheets that divide and cool the arc thereby depriving it of energy to extinguish it.
  • the arc (500) which arises when switching under a corresponding current load, extends from one contact plate to the other contact plate along this arc extinguishing chamber (600), so that an optimal arc extinction possible is.
  • the contacts are open, the arc with the contact piece (on both sides) forms a current loop, which quickly drives the arc into the quenching chamber and causes the arc to extinguish.
  • FIG. 3 shows a section of the switching device as a schematic diagram in a plan view and as a section.
  • Parts of two housing halves (710, 720) can be seen in the figure, the guide levers with their rigid axles (215) being mounted between these housing halves (710, 720).
  • the switching device shown has per switching piece (400) each on a longitudinal axis with the switching piece (400) lying guide lever (210) and two pivot levers (220), wherein the pivot lever (220) are arranged parallel to the longitudinal axis of the switching piece (400) and laterally of the contact pieces (400).
  • In the housing halves (710, 720) are recesses (730) in which the levers (220, 210) and axes (216, 226) can move.
  • the two housing halves (710, 720) together form the housing of the switching device, the separation extending in the direction of the longitudinal axis of the contact pieces (400).

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

The device has a rotary contact with switching pieces (400) that carry two end contacts (410), where the switching pieces are mounted in spatial variable rotary points. The rotary points include guide and pivot levers (210, 220), which are engaged with spatially fixed axles of guide and pivot lever bearings (215, 225) at a housing and with spatially movable axles (216, 226) of the levers at the switching pieces. Contact force springs i.e. tension springs, apply contact pressure force. An electric arc extinguishing chamber (600) is continuously formed over an opening path of contact pieces.

Description

Die Erfindung bezieht sich auf eine Schaltvorrichtung für ein elektrischesThe invention relates to a switching device for an electric

Niederspannungsschaltgerät nach dem Oberbegriff des Hauptanspruchs.Low-voltage switchgear according to the preamble of the main claim.

Solche Schaltvorrichtungen weisen üblicherweise einzelunterbrechende oder doppelt unterbrechende Kontaktanordnungen auf.Such switching devices typically include single-break or double-break contact arrangements.

Aus der EP 1 523 020 A1 ist eine Schaltvorrichtung mit einfach unterbrechendem Drehkontakt insbesondere für einen mehrpoligen Niederspannungs-Lasttrennschalter bekannt. Dabei weist der Schalter ein Isolierstoffgehäuse auf, in dem zwei Kammern ausgebildet sind, von denen eine erste Kammer als Löschkammer und eine zweite Kammer mit vergleichbarem Volumen als Anschlusskammer fungiert. Ein einfach unterbrechender Drehkontakt ist in einem Lager beweglich, wobei der Drehkontakt als zweiarmiger hebel ausgebildet ist, dessen erster Hebelarm ein Kontaktstück trägt, welches mit einem Festkontakt an einer ersten Stromanschlussschiene in Schaltberührung kommt. Der zweite Hebelarm des Drehkontakts ist mit einem flexiblen Leiter verbunden, der in leitender Verbindung mit einer zweiten Stromanschlussschiene steht. Es sind Kontaktkraftfedern vorhanden, die am Drehkontakt und einer Schaltwelle oder einem Schaltwellensegment angreifen.From the EP 1 523 020 A1 is a switching device with easy interrupting rotary contact in particular for a multi-pole low-voltage switch-disconnector known. In this case, the switch has an insulating housing, in which two chambers are formed, of which a first chamber acts as an extinguishing chamber and a second chamber with a comparable volume as a connection chamber. A simply interrupting rotary contact is movable in a bearing, wherein the rotary contact is designed as a two-armed lever, the first lever arm carries a contact piece, which comes with a fixed contact on a first power supply rail in switching contact. The second lever arm of the rotary contact is connected to a flexible conductor which is in conductive connection with a second power supply rail. There are contact force springs that engage the rotary contact and a switching shaft or a switching shaft segment.

Aus der DE 100 61 394 A1 ist eine Schaltvorrichtung bekannt, die einen doppelt unterbrechenden Drehkontakt enthält, der einen jedem Pol zugeordneten Schaltantrieb aufweist. Der Drehkontakt ist in Lagern im Isolierstoffgehäuse um eine Achse senkrecht zur Längsausdehnung des Drehkontakts drehbar gelagert. Der eigentliche Schalter besteht aus zwei feststehenden, mit Stromschienen verbundenen Kontaktstücken, und einem schwimmend gelagertem, zweiarmig ausgebildetem drehbarem Kontaktstück, welches Endkontakte trägt, die mit den feststehenden Kontaktstücken zusammenwirken. Zwei Kontaktdruckfedern, vorzugsweise als Drehfedern ausgebildet, stützen sich auf einem Lagerbolzen am Drehkontaktstück ab und üben jeweils ein in Schließbewegung gerichtetes Drehmoment auf das Drehkontaktstück aus.From the DE 100 61 394 A1 For example, a switching device is known which includes a double-breaking rotary contact having a switching drive associated with each pole. The rotary contact is rotatably mounted in bearings in the insulating housing about an axis perpendicular to the longitudinal extent of the rotary contact. The actual switch consists of two fixed contacts connected to busbars, and a floating, two-armed trained rotatable contact piece, which carries end contacts, which cooperate with the fixed contact pieces. Two contact pressure springs, preferably designed as torsion springs, are supported on a bearing pin on the rotary contact piece and each exert a directed in closing movement torque on the rotary contact piece.

Die bekannten Schaltvorrichtungen weisen somit einen Festkontakt und ein bewegliches Kontaktstück auf. Der Festkontakt begrenzt die zu erreichende Trennstrecke zwischen den Kontakten. Bei Gleichstrom-Anwendungen (DC-Anwendungen) werden große Trennstrecken gewünscht. Im Stand der Technik werden für DC-Anwendungen herkömmliche Schaltvorrichtungen, die für Wechselstrom-Anwendungen (AC-Anwendungen) ausgelegt sind, verwendet. Um die geforderten großen Kontaktstrecken zu verwirklichen, werden zwei vorhandene Strombahnen in Reihe geschaltet. Um eine DC-Schaltvorrichtung mit einem vorhandenen Schaltgerät zu realisieren, kann also ein vierpoliges AC-Schaltgerät verwendet werden, bei dem jeweils zwei Phasen in Reihe geschaltet werden, z.B. Moeller Lasttrennschalter für 1000V DC wie N2-4-160-S1-DC bis N4-4-1400-S1-DC. Der Nachteil solcher Lösungen liegt in dem großen Platzbedarf solcher 4-poligen Schaltgeräte, den hohen Kosten, insbesondere durch die Verdopplung der üblicherweise aus Silberlegierungen bestehenden benötigten Kontaktplättchen, sowie der nicht auf die DC-Anwendung abgestimmte Blaswirkung der Kontaktanordnung auf den im Schalt- bzw. Auslösefall entstehenden Lichtbogen.The known switching devices thus have a fixed contact and a movable contact piece. The fixed contact limits the distance to be reached between the contacts. For DC applications (DC applications), large separation distances are required. In the prior art, for DC applications, conventional switching devices designed for AC applications (AC applications) are used. In order to realize the required large contact distances, two existing current paths are connected in series. Thus, to realize a DC switching device with an existing switching device, a four-pole AC switching device can be used in which two phases are connected in series, e.g. Moeller switch-disconnector for 1000V DC like N2-4-160-S1-DC up to N4-4-1400-S1-DC. The disadvantage of such solutions lies in the large footprint of such 4-pole switching devices, the high cost, in particular by doubling the existing commonly made of silver alloys required contact pads, and not adapted to the DC application blowing effect of the contact arrangement on the in the switching or Tripping case resulting arc.

Aufgabe der vorliegenden Erfindung ist es, eine Schaltvorrichtung für ein elektrisches Niederspannungsschaltgerät insbesondere für DC-Anwendungen anzugeben, die diese Nachteile vermeidet.The object of the present invention is to provide a switching device for a low-voltage electrical switching device, in particular for DC applications, which avoids these disadvantages.

Ausgehend von einer Schaltvorrichtung der eingangs genannten Art wird die Aufgabe erfindungsgemäß durch die Gesamtheit der Merkmale des Hauptanspruchs 1 gelöst. Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen 2 bis 8 zu entnehmen.Based on a switching device of the type mentioned, the object is achieved by the totality of the features of the main claim 1. Further advantageous embodiments of the invention are described in the dependent claims 2 to 8.

Die erfindungsgemäße Schaltvorrichtung zeichnet sich dadurch aus, dass für jede Phase zwei bewegliche Schaltstücke vorhanden sind. Die beiden Schaltstücke einer Phase sind über ein Hebelsystem in dem Gehäuse der Schaltvorrichtung gelagert. Dabei umfasst dieses Hebelsystem jeweils einen Führungs- und einen Schwenkhebel, die jeweils mit einer starren Achse am Gehäuse der Schaltvorrichtung und mit einer beweglichen Achse am jeweiligen Schaltstück befestigt sind. Im Ausschaltfalle wird der Schwenkhebel von der Stellung EIN nach AUS bewegt und schwenkt dadurch die beiden Schaltstücke weit auseinander. Die Schaltvorrichtung eignet sich daher besonders für DC- und hohe Spannungen, bei denen große Öffnungsstrecken zum Abschalten erforderlich sind.The switching device according to the invention is characterized in that there are two movable contact pieces for each phase. The two switching pieces of a phase are mounted via a lever system in the housing of the switching device. In this case, this lever system each comprises a guide and a pivot lever, which are each secured with a rigid axle on the housing of the switching device and with a movable axis on the respective contact piece. In the event of a break, the swivel lever is moved from the ON position to the OFF position, thereby pivoting the two contact pieces far apart. The switching device is therefore particularly suitable for DC and high voltages where large opening distances are required to shut down.

Erfindungsgemäß sind die Hebel so über bewegliche Gelenke mit den Schaltstücken verbunden, dass die Gelenke sich im Schaltfalle auf Kreisbögen bewegen.According to the invention the levers are connected via movable joints with the switching pieces, that the joints move in the case of switching on circular arcs.

In einer bevorzugten Ausführungsform der Erfindung sind die Hebel aus Isolierstoff gefertigt.In a preferred embodiment of the invention, the levers are made of insulating material.

In einer weiteren Ausführungsform umfassen die Hebel einem Kern und einem Mantel. Dabei kann der Kernwerkstoff aus einem hochbelastbaren Material, wie z.B. Stahl oder Aluminium, bestehen. Das Mantelmaterial kann dabei aus Isolierstoff bestehen.In another embodiment, the levers include a core and a shell. In this case, the core material of a heavy-duty material, such. Steel or aluminum. The jacket material can consist of insulating material.

In einer weiteren bevorzugten Ausführungsform greifen Kontaktkraftfedern an dem Schwenkhebel an. Es hat sich als vorteilhaft erwiesen, die Kontaktkraftfedern als Zugfedern auszulegen, die in der EIN-Stellung eine Kraft auf die Kontaktstücke ausüben, die in Richtung des jeweiligen anderen Kontaktstücks wirkt.In a further preferred embodiment, contact force springs engage the pivoting lever. It has proved to be advantageous to design the contact force springs as tension springs, which exert a force on the contacts in the ON position, which acts in the direction of the respective other contact piece.

In einer vorteilhaften Ausführungsform umfassen die Schaltstücke an einem ersten Ende Kontaktplättchen.In an advantageous embodiment, the contact pieces comprise contact plates at a first end.

In einer besonders bevorzugten Ausführungsform wird die Bahnkurve, die die Kontaktplättchen bei ihrer Schaltbewegung durchlaufen, von einer Löschkammer begleitet. Als besonders vorteilhaft hat sich erwiesen, diese Löschkammer durchgehend über die gesamte von den Kontaktplättchen durchlaufene Bahnkurve auszulegen.In a particularly preferred embodiment, the trajectory through which the contact plates pass during their switching movement is accompanied by a quenching chamber. It has proved particularly advantageous to design this quenching chamber continuously over the entire trajectory traversed by the contact plates.

Die erfindungsgemäße Schaltvorrichtung eignet sich für Wechselstromanwendungen, besonders aber auch für Gleichstromanwendungen.The switching device according to the invention is suitable for AC applications, but especially for DC applications.

Anhand der in den Figuren dargestellten Ausführungsbeispiele wird die Erfindung näher erläutert. Es zeigen:

Fig 1
die Schaltvorrichtung als Prinzipskizze in EIN-Stellung
Fig 2
die Schaltvorrichtung als Prinzipskizze in Seitenansicht in AUS-Stellung.
Fig 3
die Schaltvorrichtung als Prinzipskizze in einer Draufsicht und als Schnitt.
Reference to the embodiments illustrated in the figures, the invention is explained in detail. Show it:
Fig. 1
the switching device as a schematic diagram in ON position
Fig. 2
the switching device as a schematic diagram in side view in the OFF position.
Fig. 3
the switching device as a schematic diagram in a plan view and as a section.

Figur 1 zeigt in einer Prinzipskizze die erfindungsgemäße Schaltvorrichtung (100) in der Stellung EIN. Die Schaltvorrichtung (100) enthält zwei bewegliche Schaltstücke (400), die jeweils an einem ersten Ende eines Führungshebels (210) und eines Schwenkhebels (220) in Lagern mit beweglichen Achsen (216, 226) beweglich gelagert sind. Die Führungshebel (210) und Schwenkhebel (220) sind mit ihrem jeweils zweiten Ende mittels Lager mit starrer Achse (215, 225) in einem Gehäuse (nicht gezeichnet) gelagert. Die beweglichen Achsen der Führungshebel (216) können sich um ihre Führungshebellager mit starrer Achse (215) auf einer Kreisbahn (218) im Raum bewegen. Die beweglichen Achsen der Schwenkhebel (226) können sich ebenfalls auf einer Kreisbahn (228) um ihr Schwenkhebellager mit starrer Achse (225) bewegen. Die Kontaktkraft wird mittels Kontaktkraftfedern (300), die an den Schwenkhebeln (220) angreifen, aufgebracht. Es ist aber auch möglich, Kontaktkraftfedern (300) an andern Orten der Schwenkhebel (220) oder an den Schaltstücken (400) selbst angreifen zu lassen. Der Schwenkhebel (220) ist hier vereinfacht dargestellt, um die starre Verbindung der Drehpunkte (225) und (226) abzubilden. In manchen Ausführungsformen ist diese Funktion durch eine Schaltwelle umgesetzt. Die Führungshebel (210), als auch die Schwenkhebel (220) können aus Isolierstoff gefertigt sein. Es ist aber auch möglich, die Führungs- (210) und Schwenkhebel (220) aus einem Sandwich mit einem Kern und einer Ummantelung herzustellen, wobei das Kernmaterial ein mechanisch stabiles Material sein kann, dass nicht isolierend sein muss, und das Mantelmaterial kann aus einem Isolierstoff bestehen. FIG. 1 shows a schematic diagram of the switching device (100) according to the invention in the ON position. The shift apparatus (100) includes two movable shift pieces (400) each movably supported at a first end of a guide lever (210) and a swing lever (220) in bearings having movable shafts (216, 226). The guide lever (210) and pivot lever (220) are mounted with their respective second end by means of bearings with a rigid axis (215, 225) in a housing (not shown). The movable axes of the guide levers (216) can move around their rigid-axis guide-lever bearings (215) on a circular path (218) in space. The movable axes of the pivoting levers (226) may also move on a circular path (228) about their rigid-axis pivotal lever bearing (225). The contact force is applied by means of contact force springs (300) which act on the pivoting levers (220). But it is also possible to let contact force springs (300) at other locations of the pivot lever (220) or on the contact pieces (400) attack itself. The pivoting lever (220) is shown here in simplified form to depict the rigid connection of the pivot points (225) and (226). In some embodiments, this function is implemented by a shift shaft. The guide lever (210), as well as the pivot lever (220) may be made of insulating material. But it is also possible to make the guide (210) and pivot lever (220) of a sandwich with a core and a shell, wherein the core material may be a mechanically stable material that need not be insulating, and the jacket material may consist of a Insulant exist.

In Figur 2 ist in einer Prinzipskizze die erfindungsgemäße Schaltvorrichtung (100) in der Stellung AUS abgebildet. Beide Schaltstücke haben sich im Raum um die beweglichen Achsen von Führungshebel und Schwenkhebel (216, 226) gedreht, wobei sich diese beweglichen Achsen (216, 226) auf ihren Kreisbahnen (218, 228) entsprechend bewegt haben. Obwohl sich Führungs- und Schwenkhebel (210, 220) nur wenig bewegt haben, haben sich die Endkontakte (410) der Schaltstücke sehr weit auseinander bewegt. Weiterhin ist eine entlang der Bahnkurve, die die Endkontakte (410) bei ihrem Öffnungsweg beschreiben, eine durchgehende Lichtbogenlöschkammer (600) zu sehen. In der Lichtbogenlöschkammer (600) sind Lichtbogenlöschelemente (610) angeordnet. Diese Lichtbogenlöschelemente (610) können Bleche umfassen, die den Lichtbogen aufteilen und kühlen und ihm dabei Energie entziehen, um ihn zum Verlöschen zu bringen. Der Lichtbogen (500), der beim Schalten unter entsprechender Strombelastung entsteht, zieht sich von dem einen Kontaktplättchen zum anderen Kontaktplättchen entlang dieser Lichtbogenlöschkammer (600), so dass eine optimale Lichtbogenlöschung möglich ist. Bei geöffneten Kontakten bildet der Lichtbogen mit dem Schaltstück (auf beiden Seiten) eine Stromschleife, welche den Lichtbogen schnell in die Löschkammer treibt und zum Verlöschen des Lichtbogens führt.In FIG. 2 is a schematic diagram of the switching device (100) according to the invention shown in the OFF position. Both contact pieces have been rotated in space around the movable axes of guide lever and pivot lever (216, 226), said movable axes (216, 226) have moved on their circular paths (218, 228) accordingly. Although guide and pivot levers (210, 220) have moved only slightly, the end contacts (410) of the contact pieces have moved very far apart. Furthermore, one along the trajectory describing the end contacts (410) in their opening path is a continuous arc quenching chamber (600). In the arc quenching chamber (600) arc extinguishing elements (610) are arranged. These arc quenching elements (610) may include sheets that divide and cool the arc thereby depriving it of energy to extinguish it. The arc (500), which arises when switching under a corresponding current load, extends from one contact plate to the other contact plate along this arc extinguishing chamber (600), so that an optimal arc extinction possible is. When the contacts are open, the arc with the contact piece (on both sides) forms a current loop, which quickly drives the arc into the quenching chamber and causes the arc to extinguish.

Figur 3 zeigt einen Ausschnitt der Schaltvorrichtung als Prinzipskizze in einer Draufsicht und als Schnitt. In der Figur sind Teile zweier Gehäusehälften (710, 720) zu sehen, wobei zwischen diesen Gehäusehälften (710, 720) die Führungshebel mit ihren starren Achsen (215) gelagert sind. Die gezeigte Schaltvorrichtung weist je Schaltstück (400) jeweils einen auf einer Längsachse mit dem Schaltstück (400) liegenden Führungshebel (210) und jeweils zwei Schwenkhebel (220) auf, wobei die Schwenkhebel (220) parallel zur Längsachse des Schaltstücks (400) angeordnet sind und seitlich der Schaltstücke (400) liegen. In den Gehäusehälften (710, 720) befinden sich Ausnehmungen (730), in denen sich die Hebel (220, 210) und Achsen (216, 226) bewegen können. Die beiden Gehäusehälften (710, 720) bilden zusammen das Gehäuse der Schaltvorrichtung, wobei die Trennung in Richtung der Längsachse der Schaltstücke (400) verläuft. FIG. 3 shows a section of the switching device as a schematic diagram in a plan view and as a section. Parts of two housing halves (710, 720) can be seen in the figure, the guide levers with their rigid axles (215) being mounted between these housing halves (710, 720). The switching device shown has per switching piece (400) each on a longitudinal axis with the switching piece (400) lying guide lever (210) and two pivot levers (220), wherein the pivot lever (220) are arranged parallel to the longitudinal axis of the switching piece (400) and laterally of the contact pieces (400). In the housing halves (710, 720) are recesses (730) in which the levers (220, 210) and axes (216, 226) can move. The two housing halves (710, 720) together form the housing of the switching device, the separation extending in the direction of the longitudinal axis of the contact pieces (400).

BezugszeichenlisteLIST OF REFERENCE NUMBERS

100100
Schaltvorrichtung für einen elektrischen NiederspannungsschalterSwitching device for a low-voltage electrical switch
210210
Führungshebelguide lever
215215
Führungshebellager mit starrer AchseGuide lever bearing with rigid axis
216216
bewegliche Achse des Führungshebelsmovable axis of the guide lever
218218
Kreis der möglichen geometrischen Orte der beweglichen Achse des FührungshebelsCircle of possible geometric locations of the movable axis of the guide lever
220220
Schwenkhebelpivoting lever
225225
Schwenkhebellager mit starrer AchseSwivel lever bearing with rigid axle
226226
bewegliche Achse des Schwenkhebelsmovable axis of the pivot lever
228228
Kreis der möglichen geometrischen Orte der beweglichen Achse des SchwenkhebelsCircle of possible geometric locations of the movable axis of the pivot lever
300300
KontaktkraftfederContact force spring
400400
Schaltstückswitching piece
410410
Endkontaktend contact
500500
LichtbogenElectric arc
600600
LichtbogenlöschkammerArc chute
610610
LichtbogenlöschelementeArc quenching elements
710710
Erste GehäusehälfteFirst housing half
720720
Zweite GehäusehälfteSecond housing half
730730
Ausnehmung im Gehäuse für Hebel und AchsenRecess in the housing for levers and axles

Claims (8)

Schaltvorrichtung für einen elektrischen Niederspannungsschalter (100), enthaltend einen Drehkontakt mit mindestens zwei Endkontakte (410) tragenden Schaltstücken (400) und Mitteln zur Aufbringung einer Kontaktdruckkraft (300), ein Gehäuse und eine Lichtbogenlöschkammer (600),
dadurch gekennzeichnet, dass
die mindestens zwei Endkontakte (410) tragenden Schaltstücke (400) in räumlich veränderbaren Drehpunkten (216, 226) gelagert sind.Switching device for a low-voltage electrical switch (100), comprising a rotary contact with contact pieces (400) carrying at least two end contacts (410) and means for applying a contact pressure force (300), a housing and an arc quenching chamber (600),
characterized in that
the at least two end contacts (410) carrying switching pieces (400) in spatially variable pivot points (216, 226) are mounted. Schaltvorrichtung für einen elektrischen Niederspannungsschalter (100) nach Anspruch 1, dadurch gekennzeichnet, dass
räumlich veränderbaren Drehpunkte (216, 226) jeweils einen Führungs- (210) und einen Schwenkhebel (220) aufweisen.Switching device for a low-voltage electrical switch (100) according to claim 1, characterized in that
spatially variable pivot points (216, 226) each have a guide (210) and a pivot lever (220). Schaltvorrichtung für einen elektrischen Niederspannungsschalter (1) nach Anspruch 2
dadurch gekennzeichnet, dass
die Führungs- (210) und Schwenkhebel (220) jeweils mit einer räumlich starren Achse (215, 225) am Gehäuse und mit einer räumlich beweglichen Achse (216, 226) am Schaltstück (400) in Eingriff stehen.Switching device for a low-voltage electrical switch (1) according to claim 2
characterized in that
the guide (210) and pivot levers (220) each engage a spatially rigid shaft (215, 225) on the housing and a movable axis (216, 226) on the shift member (400). Schaltvorrichtung für einen elektrischen Niederspannungsschalter (100) nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass
die Führungs- (210) und Schwenkhebel (220) Isolierstoff aufweisen.Switching device for a low-voltage electrical switch (100) according to one of the preceding claims,
characterized in that
the guide (210) and pivot levers (220) comprise insulating material. Schaltvorrichtung für einen elektrischen Niederspannungsschalter (100) nach Anspruch 1 bis 3,
dadurch gekennzeichnet, dass
die Führungs- (210) und Schwenkhebel (220) einen Kern und einen Mantel umfassen, wobei der Mantel Isolierstoff aufweist.Switching device for a low-voltage electrical switch (100) according to Claims 1 to 3,
characterized in that
the guide (210) and pivot levers (220) comprise a core and a jacket, the jacket comprising insulating material. Schaltvorrichtung für einen elektrischen Niederspannungsschalter (100) nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass
die Mittel zur Aufbringung einer Kontaktdruckkraft (300) Kontaktkraftfedern aufweisen.Switching device for a low-voltage electrical switch (100) according to one of the preceding claims,
characterized in that
the means for applying a contact pressure force (300) comprise contact force springs. Schaltvorrichtung für einen elektrischen Niederspannungsschalter (100) nach Anspruch 4, dadurch gekennzeichnet, dass
die Kontaktkraftfedern (300) als Zugfedern ausgelegt sindSwitching device for a low-voltage electrical switch (100) according to claim 4, characterized in that
the contact force springs (300) are designed as tension springs Schaltvorrichtung für einen elektrischen Niederspannungsschalter (100) nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass
die Lichtbogenlöschkammer (600) durchgehend über den gesamten möglichen Öffnungsweg der Kontaktstücke ausgebildet ist.Switching device for a low-voltage electrical switch (100) according to one of the preceding claims,
characterized in that
the arc extinguishing chamber (600) is formed continuously over the entire possible opening path of the contact pieces.
EP10172222A 2010-08-06 2010-08-06 Switching device for an electric low voltage switching device Withdrawn EP2416332A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP10172222A EP2416332A1 (en) 2010-08-06 2010-08-06 Switching device for an electric low voltage switching device
PCT/EP2011/063562 WO2012017090A1 (en) 2010-08-06 2011-08-05 Switching apparatus for a low-voltage electrical switching device
CN2011800480094A CN103155071A (en) 2010-08-06 2011-08-05 Switching apparatus for a low-voltage electrical switching device
EP11739102.9A EP2601661A1 (en) 2010-08-06 2011-08-05 Switching apparatus for a low-voltage electrical switching device
US13/814,247 US20130192969A1 (en) 2010-08-06 2011-08-05 Switching apparatus for a low-voltage electrical switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10172222A EP2416332A1 (en) 2010-08-06 2010-08-06 Switching device for an electric low voltage switching device

Publications (1)

Publication Number Publication Date
EP2416332A1 true EP2416332A1 (en) 2012-02-08

Family

ID=43304984

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10172222A Withdrawn EP2416332A1 (en) 2010-08-06 2010-08-06 Switching device for an electric low voltage switching device
EP11739102.9A Withdrawn EP2601661A1 (en) 2010-08-06 2011-08-05 Switching apparatus for a low-voltage electrical switching device

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11739102.9A Withdrawn EP2601661A1 (en) 2010-08-06 2011-08-05 Switching apparatus for a low-voltage electrical switching device

Country Status (4)

Country Link
US (1) US20130192969A1 (en)
EP (2) EP2416332A1 (en)
CN (1) CN103155071A (en)
WO (1) WO2012017090A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013107446A1 (en) 2012-09-27 2014-03-27 Eaton Electrical Ip Gmbh & Co. Kg Switching apparatus for power switching device for e.g. electric drive, has impinging elements provided at control shaft, which are decoupled from contact arms during separation of end contacts against action of contact force springs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6301659B2 (en) * 2014-01-17 2018-03-28 株式会社神戸製鋼所 Pulse high current switch

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10061394A1 (en) 2000-12-09 2002-06-13 Moeller Gmbh Switching device with floating dual interrupt rotary contact has contact springs on bearing bolt on contact part that exert torque on both sides of contact part, symmetrically load end contacts
DE10261853B3 (en) * 2002-12-20 2004-04-22 Siemens Ag Multi-pole power switch for 3-phase load, has feedback torque exerted on switch shaft by one switch pole reduced relative to feedback torque exerted on switch shaft by further switch pole
EP1523020A1 (en) 2003-10-10 2005-04-13 Moeller GmbH Switching device with a single break rotary contact
EP1722383A1 (en) * 2005-05-10 2006-11-15 Siemens Aktiengesellschaft Driveline for coupling a movable contact to an operating mechanism and low voltage circuit breaker with a driveline
DE102007001471A1 (en) * 2007-01-05 2008-07-10 Siemens Ag Electrical switching device for use in low-voltage circuit-breaker, has contact lever linearly guided for closing interfaces during switching movement of lever in point and guided in rotation movement of lever in same point
DE102009043105A1 (en) * 2008-11-12 2010-05-20 Abb Ag Electrical overload relay with a contact bridge

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293387A (en) * 1965-04-02 1966-12-20 Ite Circuit Breaker Ltd Center break thrust type switch
IT1289483B1 (en) * 1996-12-20 1998-10-15 Sace Spa ELECTRIC SWITCH WITH MEANS FOR THE REGULATION OF THE CONTACTS
FR2780549B1 (en) * 1998-06-24 2000-09-08 Schneider Electric Ind Sa LOW VOLTAGE MULTIPOLAR CIRCUIT BREAKER WITH HIGH ELECTRODYNAMIC HOLDING, OF WHICH THE POLE SHAFT IS ARRANGED IN THE POLES HOUSING COMPARTMENT
FR2781921B1 (en) * 1998-07-29 2000-09-15 Schneider Electric Ind Sa CIRCUIT BREAKER WITH ELECTRODYNAMIC HOLD AND HIGH BREAKING POWER
DE102005028474B4 (en) * 2005-06-20 2008-04-30 Siemens Ag Contact system has movable contact bridge swiveling about a jointed axis giving two contacts with only one used normally and both in the case of a current overload or short circuit
CN101604600B (en) * 2009-06-05 2012-10-03 上海诺雅克电气有限公司 Multi-stage breaker with auxiliary supports

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10061394A1 (en) 2000-12-09 2002-06-13 Moeller Gmbh Switching device with floating dual interrupt rotary contact has contact springs on bearing bolt on contact part that exert torque on both sides of contact part, symmetrically load end contacts
DE10261853B3 (en) * 2002-12-20 2004-04-22 Siemens Ag Multi-pole power switch for 3-phase load, has feedback torque exerted on switch shaft by one switch pole reduced relative to feedback torque exerted on switch shaft by further switch pole
EP1523020A1 (en) 2003-10-10 2005-04-13 Moeller GmbH Switching device with a single break rotary contact
EP1722383A1 (en) * 2005-05-10 2006-11-15 Siemens Aktiengesellschaft Driveline for coupling a movable contact to an operating mechanism and low voltage circuit breaker with a driveline
DE102007001471A1 (en) * 2007-01-05 2008-07-10 Siemens Ag Electrical switching device for use in low-voltage circuit-breaker, has contact lever linearly guided for closing interfaces during switching movement of lever in point and guided in rotation movement of lever in same point
DE102009043105A1 (en) * 2008-11-12 2010-05-20 Abb Ag Electrical overload relay with a contact bridge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013107446A1 (en) 2012-09-27 2014-03-27 Eaton Electrical Ip Gmbh & Co. Kg Switching apparatus for power switching device for e.g. electric drive, has impinging elements provided at control shaft, which are decoupled from contact arms during separation of end contacts against action of contact force springs

Also Published As

Publication number Publication date
CN103155071A (en) 2013-06-12
US20130192969A1 (en) 2013-08-01
EP2601661A1 (en) 2013-06-12
WO2012017090A1 (en) 2012-02-09

Similar Documents

Publication Publication Date Title
EP2704172B1 (en) Rotor for an electrical switch
DE112010005420B4 (en) Vacuum circuit breaker
WO2014001029A1 (en) Three-position load isolating switch for medium-voltage switchgear assemblies
DE102007033704B4 (en) Arrangement with a switch-disconnector and a grounding switch
EP2789000B1 (en) Switching device, more particularly a load interrupter switch, for medium-voltage switching systems
DE102011078846A1 (en) Current interruption device for use in fusible disconnecting switch, has driving part and mobile contact parts driven in manner such that driving part and mobile contact parts are turned synchronously around rotation axis of body
EP2846339B1 (en) Rotor for an electrical switch
WO2010026048A1 (en) Camshaft drive for a vacuum switching tube and switching device
DE60006555T2 (en) GAS-INSULATED SWITCHING DEVICE
EP2416332A1 (en) Switching device for an electric low voltage switching device
EP1620871B1 (en) On-load tap changer for a sequence switch
EP2601662B1 (en) Drive for a switch disconnector with c o switching capacity
DE102006016273A1 (en) Low-voltage circuit-breaker for e.g. electrical network, has three contact pairs connected in series for each phase and released simultaneously during short- circuit, where contact pairs comprise contacts arranged at contact arms
EP1261981B1 (en) Switchgear for low-voltage switching units with a linearly displaceable contact support
DE102006004401B3 (en) Contact system for an electrical switch with double contact has connecting springs that are movable by switch shafts to make or break the circuit
EP3469613B1 (en) Contact arm assembly for a high-voltage switchgear, and use thereof
DE2312900C3 (en) Disconnector with devices for momentary disconnection of an electrical power
EP2346059A2 (en) Method for switching an electric power circuit
WO2002041347A1 (en) Contact arrangement for current-limiting protective circuit breakers
DE102014224624A1 (en) Rotor and electromechanical switching device with a rotor
DE767683C (en) Switches, especially DC switches for high currents
DE2925189A1 (en) HV vacuum switch - has axial magnetic field arranged to minimise interference in adjacent conductors
DE1041567B (en) Switch disconnectors
DE102013212190A1 (en) switchgear
DE19956992A1 (en) Electrical switching plant has two isolators each with contact rails connected with associated busbars and counter-contact rails connected with associated electrical lines

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME RS

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20120809