EP3224851B1 - Fast triggering arrangement for cutting a current path in a switching device - Google Patents

Fast triggering arrangement for cutting a current path in a switching device Download PDF

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Publication number
EP3224851B1
EP3224851B1 EP15800786.4A EP15800786A EP3224851B1 EP 3224851 B1 EP3224851 B1 EP 3224851B1 EP 15800786 A EP15800786 A EP 15800786A EP 3224851 B1 EP3224851 B1 EP 3224851B1
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EP
European Patent Office
Prior art keywords
drive
switching device
holding
switching
anchor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15800786.4A
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German (de)
French (fr)
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EP3224851A1 (en
Inventor
Volker Lang
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Eaton Intelligent Power Ltd
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Eaton Intelligent Power Ltd
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Publication date
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Priority to PL15800786T priority Critical patent/PL3224851T3/en
Publication of EP3224851A1 publication Critical patent/EP3224851A1/en
Application granted granted Critical
Publication of EP3224851B1 publication Critical patent/EP3224851B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/322—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with plunger type armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H01H50/323—Latching movable parts mechanically for interlocking two or more relays
    • H01H2050/325—Combined electrical and mechanical interlocking, e.g. usually for auxiliary contacts

Definitions

  • the invention relates to a switching device with a contact system, comprising a quick release arrangement for disconnecting a current path in the switching device in the event of a short circuit or overload, with a drive for moving a drive armature from a standby position to a release position, wherein the drive armature is provided so on act at least one moving contact of the switching device that the current path is disconnected, wherein a holding device for holding the drive armature is provided in the release position, and a switching device with a contact system of at least one fixed contact and at least one moving contact, wherein the moving contact for closing and disconnecting a current path is reversibly movable between a closed position and an open position relative to the fixed contact by means of a drive for operational switching.
  • Such switching devices with corresponding electromagnetic drives are used for example in motor starters. These should be suitable for the operational switching of a load, switching off an overload and switching off in the event of a short circuit.
  • two separate switching devices namely a motor protection switch can be used as a circuit breaker and a contactor as a load switch to achieve this functionality.
  • motor starters are known in which the switching and protective function is integrated in a switching device. As a rule, they have a hand-operated, mechanical switch lock.
  • WO 2014/023326 A1 is a switching device or a drive for a switching device for a compact and remote-controlled motor starter described with the operational switching of the load, switching off the overload and the switching off of short circuits can be realized with a single device.
  • Other switching devices are from the publications NL 1 008 983 C2 and WO 99/14769 A1 known.
  • the problem with switching off short circuits is the need to open the closed contacts very quickly and permanently, so that a safe extinguishing of the arc is ensured, and a re-ignition of the arc and welding of the contacts can be avoided.
  • the drive has for this purpose a bipolar electromagnetic drive unit with a movable armature and two stationary magnetic coils for reversible movement of the armature between two permanent magnetically stabilized anchor layers, wherein by selective excitation of the first solenoid a moving contact is movable to the closed position and by selectively energizing the second solenoid of the moving contact within a permissible for a short circuit in the current path Maximalabschaltzeit is movable in the open position.
  • Electromagnetic actuators that are used for switching on and off have the disadvantage that they have a comparatively large, moving mass, which is necessary for the switch-on. Due to the inertia, however, such a drive has a correspondingly long turn-off time. The switch-off times that can be achieved in this way may be too long to safely switch off a short circuit.
  • a quick release independent of the drive for operational switching is provided exclusively for disconnecting a current path in a switching device in the event of a short circuit or overload.
  • the quick release has, for example, an electromagnetic drive with a drive armature and a drive coil, wherein the movement of the drive armature is intended to act directly or indirectly on a moving contact of the switching device, so that the current path is disconnected.
  • the first movement of the moving contact is due to the electrodynamic effect.
  • the resulting arc is extinguished by means of a suitable arc extinguishing device.
  • the quick release moves the moving contact further in the direction of its open position.
  • the drive coil of the quick release is energized with the short circuit current. This drops quickly after opening the contacts, so that a permanent opening of the contact pair is not guaranteed by the quick release.
  • the switching device has a drive for moving a drive armature from a standby position to a release position, wherein the drive armature is provided to act on a moving contact of the switching device, that the current path is disconnected. Furthermore, a holding device for holding the drive armature in the release position is provided according to the invention. As a result, a falling back of the open moving contact is prevented even when the exciting current of the drive sinking, which is provided as an electromagnetic drive with a drive armature and a drive coil, so that a reignition of the arc and / or a welding of the contact pair are advantageously avoided.
  • the drive armature can in particular move an actuator, for example in the form of a striking fork, in order to transmit a driving force directly or indirectly from the drive armature to the moving contact or via a moving contact carrier to the moving contact.
  • a contact system of the switching device may have one or more moving contacts, it is preferably carried out with two interruptions, wherein two moving contacts are connected in particular via a moving contact carrier in order to be movable relative to two fixed contacts of the current path.
  • the drive armature acts on a moving contact or on several moving contacts, depending on the design of the switching device whose variants even without explicit mention Specialist are familiar.
  • the holding device has a holding anchor, which is rigidly coupled to the drive armature, as well as a magnet arrangement, wherein the holding armature is replaced by a holding arrangement Magnetic force of the magnet assembly is held in a holding position as soon as the drive armature reaches the triggering position.
  • the magnet arrangement has a coil.
  • the magnet arrangement particularly preferably has a permanent-magnetic system.
  • an electromagnetic force of the separately energized coil holds the holding armature in the holding position.
  • the holding anchor is so releasable in particular by switching off the coil, so that a reset of the quick release arrangement in the standby position is advantageously easy to implement, for example by a spring biasing the drive armature in the direction of the ready position.
  • the magnet arrangement has a permanent-magnetic system in order to hold the retaining anchor in the holding position, but no coil.
  • a reset of this advantageous simply constructed variant takes place in the case by a force on the retaining anchor, which overcomes the magnetic force of the permanent magnetic system.
  • An origin of the necessary force may be outside the quick release arrangement, for example, the force can be generated by a drive for operational switching of the switching device.
  • both a coil and a permanent-magnetic system are provided, the coil being provided for generating an electromagnetic force in order to overcome the magnetic force of the permanent-magnetic system and to release the holding anchor.
  • This embodiment also advantageously allows a particularly simple return of the drive armature in the ready position.
  • the holding device has a mechanical locking with a biased against the drive armature locking element, wherein the locking element locks the drive armature in the release position in a form-fitting manner.
  • An advantage of the embodiment is that the holding device acts directly on the drive armature, so that the entrained holding anchor previously described embodiments can be omitted, which reduces the size and / or weight of the fixture particularly advantageous.
  • the blocking element engages in a latching recess with an undercut on the drive armature in order to prevent inadvertent unlocking of the latched locking element, for example by vibration or shock.
  • the blocking element can thereby be linearly movable in the manner of a carriage, preferably in a direction perpendicular to the direction of movement of the drive armature.
  • the blocking element can be rotatably mounted, so that the bias is impressed, for example, at one end of the blocking element, while the opposite end is provided for positive engagement in the locking recess.
  • the blocking element has an actuating contour, wherein a deflection of the blocking element via the actuating contour releases the drive armature for movement back into the ready position.
  • the deflection of the blocking element takes place, for example, by a force from outside the quick release arrangement.
  • the holding device can be reset by a drive for operational switching of the switching device, so that the drive armature can be moved back into the ready position.
  • the switching device has a contact system comprising at least one fixed contact, and at least one moving contact, wherein the moving contact for closing and disconnecting a current path by means of a drive for operational switching is reversibly movable between a closed position and an open position relative to the fixed contact.
  • a contact system comprising at least one fixed contact, and at least one moving contact, wherein the moving contact for closing and disconnecting a current path by means of a drive for operational switching is reversibly movable between a closed position and an open position relative to the fixed contact.
  • the drive armature acts on the moving contact during movement from the standby position to the release position such that the moving contact passes from the closed position to the open position and there permanently by means of the holding device is held.
  • the switching device for switching on and off of a current through the current path has at least one fixed contact and at least one moving contact, wherein the moving contact for closing and separating the current path relative to the fixed contact is movable.
  • a contact system may have a single contact pair. It is preferably carried out in a double-interrupting manner, wherein two moving contacts are connected in particular via a moving contact carrier in order to be movable relative to two fixed contacts of the current path.
  • the terms moving contact and fixed contact will be used without going into the possibility of an embodiment with a double-break contact system, since this is familiar to the person skilled in the art.
  • a moving contact carrier with two moving contacts is covered by the term moving contact.
  • the holding device can be reset by the drive for operational switching of the switching device at a turn-off.
  • a reset is to be understood in the sense of the invention that the drive armature of the quick release arrangement is released after a previous release of the holding device and in particular is moved from the triggering position back to the standby position.
  • a force of the drive for operational switching during the switch-off operation acts on the holding anchor in order to overcome a holding force of the permanent-magnetic system.
  • the drive deflects an actuating contour for operational switching during the switch-off operation.
  • FIG. 1 is a switching device simplified and shown schematically, in which a quick release assembly 2 and a drive 1 are arranged for operational switching in a common housing.
  • the switching device for switching on and off of a current through a current path 10 has for this purpose two fixed contacts 11, 12 which cooperate with two moving contacts 14, 15 on a moving contact carrier 16 for closing and disconnecting the current path 10.
  • the electromagnetic drive 1 is used for operationally moving the BewegCountéess 16 between a non-illustrated closed position with closed contact pairs 11, 14 and 12, 15 and a ⁇ ffiiungswolf illustrated here.
  • the quick release arrangement 2 for disconnecting the current path 10 in the event of a short circuit or overload is likewise only shown schematically here.
  • the drive 1 for operational switching acts, for example via a mechanism on the BewegWallettown 16, here in the form of a schematically illustrated rocker 34 which is rotatably mounted in a pivot point 6. If the drive 1 acts on the rocker 34 at a distal end, then the moving contact carrier 16 with the moving contacts 14, 15 is moved towards the fixed contacts 11, 12, thus closing the current path 10.
  • a drive 3 of the quick release arrangement 2 acts, for example, in the same direction as the drive 1 for operational switching, but on an actuator 8, which transmits the force of the drive 3 directly to the Beweg.itati 16 with the BewegCounten 14, 15 and thereby this of the fixed contacts 11, 12, so that the current path 10 is interrupted.
  • the drive 3 could also act on the rocker 8 on the opposite side of the pivot point 6, which, however, would require a drop of the inertial drive 1 for operational switching out of the mechanism.
  • the shutting down of shorts requires on the one hand a very fast and, on the other hand, an ideally permanent disconnection of the moving contacts 14, 15 from the fixed contacts 11, 12.
  • the switch-off is effected by the rapid release arrangement 2, wherein a first lifting of the moving contacts 14, 15 by electrodynamic Lifting forces is caused.
  • a first lifting of the moving contacts 14, 15 by electrodynamic Lifting forces is caused.
  • By separating the moving contacts 14, 15 of the fixed contacts 11, 12 arcs arise, which are each conducted in extinguishing systems 21.
  • holding device 20 is provided to keep the separated by the drive 3 moving contacts 14, 15 permanently open to avoid falling back the moving contacts 14, 15 in a reduction of the drive 3 attractive excitation current, due to the deletion.
  • a flashback of the arcs or even a welding of the moving contacts 14, 15 with the fixed contacts 11, 12 is advantageously avoided.
  • FIGS. 2 to 9 is shown by the switching device in addition to the quick release assembly 2 with the holding assembly 20 each of the current path 10 with the fixed contacts 11, 12 and the BewegCounten 14, 15 on the BewegCountmay 16, the latter is biased by a contact pressure spring 5 in the direction of the closed position.
  • the electromagnetic drive 1 for operational switching is for simplicity in the FIGS. 2 to 5 not shown.
  • the electromagnetic drive 1 is shown, but for the sake of simplicity, without the mechanism provided for operational switching on and off, which transmits the force to the moving contact carrier 16 in order to carry out the operative switching operations.
  • the construction of a corresponding contactor drive 1 is well known to those skilled in the art. Identical components of the described embodiments have the same reference numerals and will not be repeated below with respect to each figure.
  • FIG. 2 is a detailed view of a portion of a switching device according to the invention with a first embodiment of a quick release device 2 according to the invention shown in a standby position, which in the otherwise identical FIG. 3 is shown in a trip position. That is, the quick trip device 2 triggered by, for example, a short circuit has disconnected the current path 10, not the drive 1 for operational switching. As a result, the moving contacts 14, 15 are or in the open position, when the triggered quick release arrangement 2 in the Triggering position according to FIG. 3 was moved.
  • the rapid release arrangement 2 the electromagnetic drive 3 with an armature 4 and a magnetic coil 7.
  • the armature 4 is attracted, which acts via the actuator 8 and the moving contact carrier 16 on the moving contacts 14, 15 which are usually lifted by the electrodynamic lifting forces already from the fixed contacts 11, 12 and this presses against the force of the contact pressure spring 5 in the open position.
  • the armature 4 can also act directly on the moving contact carrier 16 or the moving contacts 14, 15.
  • the actuator 8, which is guided here by a core 9 of the drive 3, can be designed as a striking fork.
  • the actuator 8 is independent of the mechanism, not shown, for transmitting the power of the drive 1 for operative switching movable.
  • the quick release arrangement 2 further comprises a holding device 20 for holding the drive armature 4 in the release position.
  • the holding device 20 has a holding armature 19, which is rigidly coupled to the drive armature 4, and a magnet arrangement 18, wherein the holding armature 19 is actuated by a magnetic force of the magnet arrangement 18 in one in the FIG. 3 shown holding position is held as soon as the drive armature 4 reaches the tripping position.
  • the magnet assembly 18 only a permanent magnetic system 23, no electromagnet.
  • the retaining anchor 19 is formed by an end portion of an arm 17 which serves as a rigid coupling 17 between the drive armature 4 and the retaining anchor 19.
  • the holding device 20 is preferably by the in FIG. 1 illustrated drive 1 for operational switching of the switching device at a turn-off reset, for example, by the force of the drive 1 for operational switching in the turn-off acts on the retaining armature 19 to overcome a holding force of the permanent magnetic system 23.
  • FIG. 4 is a detailed view of a portion of a switching device according to the invention with a second embodiment of the quick release assembly 2 according to the invention shown in the standby position, which in the otherwise identical FIG. 5 is shown in the trip position.
  • the second embodiment is different from The first embodiment in that the magnet assembly 18 has a coil 22.
  • the retaining anchor 19 is attached here as a separate component at one end of the rigid coupling 17 and is thereby moved in parallel by the drive armature 4.
  • the second embodiment can be realized with two variants of the magnet assembly 18, both in connection with the FIGS. 4 and 5 to be discribed.
  • the magnet arrangement 18 has the coil 22, but no permanent magnet.
  • the holding armature 19 is thus held by an electromagnetic force of the coil 22 in the holding position.
  • One advantage is that the holding armature 19 can be released by switching off the coil 22, so that a reset of the quick release arrangement 2 in the ready position is particularly easy to implement.
  • a permanent magnetic system 35 is provided to hold the retaining armature 19 in the holding position.
  • the coil 22 is provided to generate an electromagnetic force to overcome the magnetic force of the permanent magnetic system 35 and release the retaining armature 19.
  • the drive armature 4 After releasing the retaining armature 19, the drive armature 4 returns to its standby position in both variants, as a result of which the quick release arrangement 2 is reset and ready for use again.
  • the drive armature 4 may be biased for example in a manner not shown in the direction of its standby position.
  • FIG. 6 a portion of the switching device according to the invention in a turned off state is shown in detail, with the quick release device 2 in a standby position.
  • FIG. 7 the switching device is shown in an on state.
  • the FIG. 8 shows the switching device with the quick release assembly 2 in the trip position.
  • the switching device is shown during the resetting of the quick release assembly 2 from the release position to the standby position.
  • the electromagnetic drive 1 shown for operational switching for simplicity without the mechanism provided for switching on and off, which can act on the actuator 8, for example, or performs the switching operation independently thereof.
  • the drive 1 has an armature 30.
  • a person skilled in the art recognizes that a movement of the armature 30 is correspondingly transmitted to the moving contact carrier 16 in order to move the moving contacts 14, 15 between the open position and the closed position during the operational switching, for example with a mechanism corresponding to the rocker 34 (FIG. FIG. 1 ).
  • the third embodiment of the quick release arrangement 2 differs from the previously described embodiments in that the holding device 20 has a mechanical lock for the drive armature 4, which acts directly on the drive armature 4, so that no entrained retaining anchor is necessary.
  • the holding device 20 has, for example, a blocking element 25, which is prestressed against the drive armature 4 by means of a compression spring 27, which in the FIG. 10 as a detail is shown in detail.
  • the blocking element 25 has an opening 28, through which the drive armature 4 is passed. In the opening projects into a latch 29. Occurs when the current path 10 is closed according to FIG.
  • the quick release assembly 2 is triggered, so that the drive armature 4 is attracted and is moved from the standby position to the release position and presses on the actuator 8, the moving contacts 14, 15 in the open position, as in FIG. 8 shown.
  • a latching recess 24 passes on the drive armature 4 in the region of the locking element 25, the latching lug 29 (FIG. FIG. 10 ) is then moved by the bias of the compression spring 27 into the recess 24 into it.
  • the blocking element 25 thus locks the drive armature 4 in a form-fitting manner in the release position, so that a renewed closing of the flow path 10, a reignition of the arc and a welding of the contacts are prevented.
  • the locking element 25 locks in particular with an undercut of the latching recess 24 to prevent inadvertent unlocking of the latched locking element 25.
  • the resetting of the third embodiment of the quick release arrangement 2 will be described below with reference to FIGS FIG. 9 described.
  • an actuating arm 31 is arranged, which is intended to move the locking element 25 against the force of the compression spring 27 to the Lock the drive armature 4 to solve.
  • An impression spring 33 moves the drive armature 4 back to its standby position.
  • the blocking element 25 has an actuating contour 26 which interacts with a mating contour 32 on the actuating arm 31, which is moved by the drive 1 for operative switching with the armature 30 during a switch-off operation.
  • the deflection of the blocking element 25 via the actuating contour 26, in which the drive armature 4 is released, is in the FIG. 9 shown.
  • the reset is thus carried out after a previous release of the quick release device 2 by a switch-off of the drive 1 for operational switching.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)

Description

Die Erfindung betrifft ein Schaltgerät mit einem Kontaktsystem, aufweisend eine Schnellauslöseanordnung zum Trennen eines Strompfads in dem Schaltgerät bei einem Kurzschluss oder bei einer Überlast, mit einem Antrieb zur Bewegung eines Antriebsankers aus einer Bereitschaftsposition in eine Auslöseposition, wobei der Antriebsanker dazu vorgesehen ist, derart auf mindestens einen Bewegkontakt des Schaltgeräts einzuwirken, dass der Strompfad getrennt wird, wobei eine Haltevorrichtung zum Halten des Antriebsankers in der Auslöseposition vorgesehen ist, sowie ein Schaltgerät mit einem Kontaktsystem aus mindestens einen Festkontakt und mindestens einem Bewegkontakt, wobei der Bewegkontakt zum Schließen und Trennen eines Strompfades mittels eines Antriebs zum betriebsmäßigen Schalten reversibel zwischen einer Schließstellung und einer Öffnungsstellung gegenüber dem Festkontakt bewegbar ist.The invention relates to a switching device with a contact system, comprising a quick release arrangement for disconnecting a current path in the switching device in the event of a short circuit or overload, with a drive for moving a drive armature from a standby position to a release position, wherein the drive armature is provided so on act at least one moving contact of the switching device that the current path is disconnected, wherein a holding device for holding the drive armature is provided in the release position, and a switching device with a contact system of at least one fixed contact and at least one moving contact, wherein the moving contact for closing and disconnecting a current path is reversibly movable between a closed position and an open position relative to the fixed contact by means of a drive for operational switching.

Derartige Schaltgeräte mit entsprechenden elektromagnetischen Antrieben werden beispielsweise bei Motorstartern verwendet. Diese sollen für das betriebsmäßige Schalten einer Last, das Abschalten einer Überlast und das Abschalten im Kurzschlussfall geeignet sein. Grundsätzlich können zur Erzielung dieser Funktionalität auch zwei getrennte Schaltgeräte, nämlich ein Motorschutzschalter als Leistungsschalter und ein Schütz als Lastschalter eingesetzt werden. Als Alternative sind Motorstarter bekannt, bei denen die Schalt- und Schutzfunktion in einem Schaltgerät integriert ist. In der Regel weisen diese dazu ein handbetätigtes, mechanisches Schaltschloss auf.Such switching devices with corresponding electromagnetic drives are used for example in motor starters. These should be suitable for the operational switching of a load, switching off an overload and switching off in the event of a short circuit. Basically, two separate switching devices, namely a motor protection switch can be used as a circuit breaker and a contactor as a load switch to achieve this functionality. As an alternative, motor starters are known in which the switching and protective function is integrated in a switching device. As a rule, they have a hand-operated, mechanical switch lock.

In der Druckschrift WO 2014/023326 A1 ist ein Schaltgerät bzw. ein Antrieb für ein Schaltgerät für einen kompakten und fernbetätigbaren Motorstarter beschrieben, mit dem das betriebsmäßige Schalten der Last, das Abschalten der Überlast und das Abschalten von Kurzschlüssen mit nur einem Gerät realisiert werden kann. Weitere Schaltgeräte sind aus der Druckschriften NL 1 008 983 C2 und WO 99/14769 A1 bekannt. Die Problematik beim Abschalten von Kurzschlüssen besteht in der Notwendigkeit, die geschlossenen Kontakte sehr schnell und dauerhaft zu öffnen, so dass ein sicheres Löschen des Lichtbogens gewährleistet wird, sowie ein Wiederzünden des Lichtbogens und ein Verschweißen der Kontakte vermieden werden. Der Antrieb weist dazu eine bipolare elektromagnetische Antriebseinheit mit einem beweglichen Anker und zwei ortsfesten Magnetspulen zur reversiblen Bewegung des Ankers zwischen zwei permanentmagnetisch stabilisierten Ankerlagen auf, wobei durch selektive Erregung der ersten Magnetspule ein Bewegkontakt in die Schließstellung bewegbar ist und durch selektive Erregung der zweiten Magnetspule der Bewegkontakt innerhalb einer für einen Kurzschluss im Strompfad zulässigen Maximalabschaltzeit in die Öffnungsstellung bewegbar ist.In the publication WO 2014/023326 A1 is a switching device or a drive for a switching device for a compact and remote-controlled motor starter described with the operational switching of the load, switching off the overload and the switching off of short circuits can be realized with a single device. Other switching devices are from the publications NL 1 008 983 C2 and WO 99/14769 A1 known. The problem with switching off short circuits is the need to open the closed contacts very quickly and permanently, so that a safe extinguishing of the arc is ensured, and a re-ignition of the arc and welding of the contacts can be avoided. The drive has for this purpose a bipolar electromagnetic drive unit with a movable armature and two stationary magnetic coils for reversible movement of the armature between two permanent magnetically stabilized anchor layers, wherein by selective excitation of the first solenoid a moving contact is movable to the closed position and by selectively energizing the second solenoid of the moving contact within a permissible for a short circuit in the current path Maximalabschaltzeit is movable in the open position.

Elektromagnetische Antriebe, die für das Ein- und für das Ausschalten verwendet werden, haben den Nachteil, dass diese eine vergleichsweise große, bewegte Masse besitzen, die für den Einschaltvorgang notwendig ist. Aufgrund der Trägheit weist ein solcher Antrieb jedoch eine entsprechend lange Ausschaltzeit auf. Die so erreichbaren Ausschaltzeiten können gegebenenfalls zu lang sein, um einen Kurzschluss sicher abzuschalten. Ein von dem Antrieb zum betriebsmäßigen Schalten unabhängiger Schnellauslöser ist dagegen ausschließlich zum Trennen eines Strompfads in einem Schaltgerät bei einem Kurzschluss oder bei einer Überlast vorgesehen. Der Schnellauslöser weist beispielsweise einen elektromagnetischer Antrieb mit einem Antriebsanker und einer Antriebsspule auf, wobei die Bewegung des Antriebsankers dazu vorgesehen ist, direkt oder indirekt auf einen Bewegkontakt des Schaltgeräts einzuwirken, so dass der Strompfad getrennt wird. Bei einem Kurzschluss erfolgt ein erstes Anheben des Bewegkontakts durch den elektrodynamischen Effekt. Der entstehende Lichtbogen wird mittels einer geeigneten Lichtbogenlöschvorrichtung gelöscht. Bevor der derart geöffnete Bewegkontakt zurückfallen und den Strompfad wieder schließen kann, bewegt der Schnellauslöser den Bewegkontakt weiter in Richtung seiner geöffneten Stellung. Um sehr schnell auf den Kurzschluss zu reagieren, wird die Antriebsspule des Schnellauslösers mit dem Kurzschlussstrom erregt. Dieser fällt nach dem Öffnen der Kontakte schnell wieder ab, so dass ein dauerhaftes Öffnen des Kontaktpaars durch den Schnellauslöser nicht gewährleistet ist.Electromagnetic actuators that are used for switching on and off, have the disadvantage that they have a comparatively large, moving mass, which is necessary for the switch-on. Due to the inertia, however, such a drive has a correspondingly long turn-off time. The switch-off times that can be achieved in this way may be too long to safely switch off a short circuit. In contrast, a quick release independent of the drive for operational switching is provided exclusively for disconnecting a current path in a switching device in the event of a short circuit or overload. The quick release has, for example, an electromagnetic drive with a drive armature and a drive coil, wherein the movement of the drive armature is intended to act directly or indirectly on a moving contact of the switching device, so that the current path is disconnected. In the event of a short circuit, the first movement of the moving contact is due to the electrodynamic effect. The resulting arc is extinguished by means of a suitable arc extinguishing device. Before the thus opened moving contact can fall back and close the current path again, the quick release moves the moving contact further in the direction of its open position. To react very quickly to the short circuit, the drive coil of the quick release is energized with the short circuit current. This drops quickly after opening the contacts, so that a permanent opening of the contact pair is not guaranteed by the quick release.

Eine Aufgabe dieser Erfindung besteht darin, eine Schnellauslöseanordnung zum Trennen eines Strompfads in einem Schaltgerät zur Verfügung zu stellen, die ein schnelles und dauerhaftes Abschalten von Kurzschlüssen und/oder Überlasten erlaubt.It is an object of this invention to provide a quick trip arrangement for disconnecting a current path in a switching device that allows for quick and permanent shutdown of shorts and / or overloads.

Die Aufgabe wird durch das Schaltgerät nach den nebengeordneten Ansprüchen 1 und 7 gelöst. In den Unteransprüchen sind jeweils bevorzugte Ausführungsformen und vorteilhafte Weiterbildungen angegeben.The object is achieved by the switching device according to the independent claims 1 and 7. In the Dependent claims are each preferred embodiments and advantageous developments specified.

Das erfindungsgemäße Schaltgerät weist einen Antrieb zur Bewegung eines Antriebsankers aus einer Bereitschaftsposition in eine Auslöseposition auf, wobei der Antriebsanker dazu vorgesehen ist, derart auf einen Bewegkontakt des Schaltgeräts einzuwirken, dass der Strompfad getrennt wird. Weiterhin ist erfindungsgemäß eine Haltevorrichtung zum Halten des Antriebsankers in der Auslöseposition vorgesehen. Dadurch wird ein Zurückfallen des geöffneten Bewegkontakts auch bei absinkendem Erregerstrom des Antriebs, der als elektromagnetischer Antrieb mit einem Antriebsanker und einer Antriebsspule vorgesehen ist, verhindert, so dass ein Rückzünden des Lichtbogens und/oder ein Verschweißen des Kontaktpaars vorteilhaft vermieden werden.The switching device according to the invention has a drive for moving a drive armature from a standby position to a release position, wherein the drive armature is provided to act on a moving contact of the switching device, that the current path is disconnected. Furthermore, a holding device for holding the drive armature in the release position is provided according to the invention. As a result, a falling back of the open moving contact is prevented even when the exciting current of the drive sinking, which is provided as an electromagnetic drive with a drive armature and a drive coil, so that a reignition of the arc and / or a welding of the contact pair are advantageously avoided.

Unter dem Einwirken des Antriebsankers auf den Bewegkontakt ist im Sinne der Erfindung jede direkte oder indirekte mechanische Krafteinwirkung zu verstehen, die geeignet ist, den Bewegkontakt von seinem zugeordneten Festkontakt zu Trennen und/oder diesen zu bewegen, um den Abstand des Kontaktpaars zueinander zu erhöhen. Dazu kann der Antriebsanker insbesondere einen Betätiger bewegen, beispielsweise in Form einer Schlaggabel, um eine Antriebskraft direkt oder indirekt von dem Antriebsanker auf den Bewegkontakt oder über einen Bewegkontaktträger auf den Bewegkontakt zu übertragen. Ein Kontaktsystem des Schaltgeräts kann einen oder mehrere Bewegkontakte aufweisen, bevorzugt ist es doppeltunterbrechend ausgeführt, wobei zwei Bewegkontakte insbesondere über einen Bewegkontaktträger verbunden sind, um gegenüber zwei Festkontakten der Strombahn bewegbar zu sein. Soweit im Folgenden von dem Einwirken des Antriebsankers auf den Bewegkontakt die Rede ist, ist dies im Sinne der Erfindung so zu verstehen, dass der Antriebsanker auf einen Bewegkontakt oder auf mehrere Bewegkontakte einwirkt, je nach Ausführung des Schaltgeräts, dessen Varianten auch ohne ausdrückliche Erwähnung dem Fachmann geläufig sind.Under the action of the drive armature on the moving contact is in the context of the invention, any direct or indirect mechanical force to understand, which is suitable to move the moving contact of its associated fixed contact to disconnect and / or this to increase the distance of the contact pair to each other. For this purpose, the drive armature can in particular move an actuator, for example in the form of a striking fork, in order to transmit a driving force directly or indirectly from the drive armature to the moving contact or via a moving contact carrier to the moving contact. A contact system of the switching device may have one or more moving contacts, it is preferably carried out with two interruptions, wherein two moving contacts are connected in particular via a moving contact carrier in order to be movable relative to two fixed contacts of the current path. As far as in the following of the action of the drive armature on the moving contact is mentioned, this is to be understood in the context of the invention that the drive armature acts on a moving contact or on several moving contacts, depending on the design of the switching device whose variants even without explicit mention Specialist are familiar.

Gemäß einer ersten erfindungsgemäßen Variante der Schnellauslöseanordnung ist vorgesehen, dass die Haltevorrichtung einen mit dem Antriebsanker starr gekoppelten Halteanker, sowie eine Magnetanordnung aufweist, wobei der Halteanker durch eine Magnetkraft der Magnetanordnung in einer Halteposition gehalten wird, sobald der Antriebsanker die Auslöseposition erreicht. Besonders bevorzugt weist die Magnetanordnung eine Spule auf. Alternativ oder zusätzlich weist die Magnetanordnung besonders bevorzugt ein permanentmagnetisches System auf.According to a first variant of the quick release arrangement according to the invention, it is provided that the holding device has a holding anchor, which is rigidly coupled to the drive armature, as well as a magnet arrangement, wherein the holding armature is replaced by a holding arrangement Magnetic force of the magnet assembly is held in a holding position as soon as the drive armature reaches the triggering position. Particularly preferably, the magnet arrangement has a coil. Alternatively or additionally, the magnet arrangement particularly preferably has a permanent-magnetic system.

Gemäß einer bevorzugten Variante der Magnetanordnung, mit einer Spule, jedoch ohne ein permanentmagnetisches System, hält eine elektromagnetische Kraft der separat bestromten Spule den Halteanker in der Halteposition. Der Halteanker ist so insbesondere durch ein Abschalten der Spule freigebbar, so dass ein Rücksetzen der Schnellauslöseanordnung in die Bereitschaftsposition vorteilhaft einfach zu realisieren ist, beispielsweise durch eine den Antriebsanker in Richtung der Bereitschaftsposition vorspannende Feder.According to a preferred variant of the magnet arrangement, with a coil, but without a permanent magnet system, an electromagnetic force of the separately energized coil holds the holding armature in the holding position. The holding anchor is so releasable in particular by switching off the coil, so that a reset of the quick release arrangement in the standby position is advantageously easy to implement, for example by a spring biasing the drive armature in the direction of the ready position.

Gemäß einer weiteren bevorzugten Variante weist die Magnetanordnung ein permanentmagnetisches System auf, um den Halteanker in der Halteposition zu halten, jedoch keine Spule. Ein Rücksetzen dieser vorteilhaft einfach aufgebauten Variante erfolgt in dem Fall durch eine Krafteinwirkung auf den Halteanker, der die Magnetkraft des permanentmagnetischen Systems überwindet. Ein Ursprung der dazu notwendigen Kraft kann außerhalb der Schnellauslöseanordnung liegen, beispielsweise kann die Kraft von einem Antrieb zum betriebsmäßigen Schalten des Schaltgeräts erzeugt werden.According to a further preferred variant, the magnet arrangement has a permanent-magnetic system in order to hold the retaining anchor in the holding position, but no coil. A reset of this advantageous simply constructed variant takes place in the case by a force on the retaining anchor, which overcomes the magnetic force of the permanent magnetic system. An origin of the necessary force may be outside the quick release arrangement, for example, the force can be generated by a drive for operational switching of the switching device.

Gemäß einer weiteren bevorzugten Variante der Magnetanordnung ist sowohl eine Spule, als auch ein permanentmagnetisches System vorgesehen, wobei die Spule zur Erzeugung einer elektromagnetischen Kraft vorgesehen ist, um die magnetische Kraft des permanentmagnetischen Systems zu überwinden und den Halteanker freizugeben. Diese Ausführungsform erlaubt ebenfalls vorteilhaft eine besonders einfache Rückstellung des Antriebsankers in die Bereitschaftsposition.According to a further preferred variant of the magnet arrangement, both a coil and a permanent-magnetic system are provided, the coil being provided for generating an electromagnetic force in order to overcome the magnetic force of the permanent-magnetic system and to release the holding anchor. This embodiment also advantageously allows a particularly simple return of the drive armature in the ready position.

Gemäß einer zweiten erfindungsgemäßen Variante der Schnellauslöseanordnung ist vorgesehen, dass die Haltevorrichtung eine mechanische Verriegelung mit einem gegen den Antriebsanker vorgespannten Sperrelement aufweist, wobei das Sperrelement den Antriebsanker in der Auslöseposition formschlüssig verriegelt. Ein Vorteil der Ausführungsform besteht darin, dass die Haltevorrichtung unmittelbar auf den Antriebsanker einwirkt, so dass der mitgeführte Halteanker vorher beschriebener Ausführungsformen entfallen kann, was die Baugröße und/oder das Gewicht der Haltevorrichtung besonders vorteilhaft verringert. Besonders bevorzugt rastet das Sperrelement in einer Rastausnehmung mit einer Hinterschneidung an dem Antriebsanker ein, um ein unbeabsichtigtes Entriegeln des eingerasteten Sperrelements, beispielsweise durch Vibration oder Stoß, zu verhindern. Das Sperrelement kann dabei schlittenartig, vorzugsweise in einer Richtung senkrecht zu der Bewegungsrichtung des Antriebsankers, linear bewegbar sein. Alternativ kann das Sperrelement drehbar gelagert sein, so dass die Vorspannung beispielsweise an einem Ende des Sperrelements eingeprägt wird, während das gegenüberliegende Ende zum formschlüssigen Eingreifen in die Rastausnehmung vorgesehen ist.According to a second variant of the quick release arrangement according to the invention it is provided that the holding device has a mechanical locking with a biased against the drive armature locking element, wherein the locking element locks the drive armature in the release position in a form-fitting manner. An advantage of the embodiment is that the holding device acts directly on the drive armature, so that the entrained holding anchor previously described embodiments can be omitted, which reduces the size and / or weight of the fixture particularly advantageous. Particularly preferably, the blocking element engages in a latching recess with an undercut on the drive armature in order to prevent inadvertent unlocking of the latched locking element, for example by vibration or shock. The blocking element can thereby be linearly movable in the manner of a carriage, preferably in a direction perpendicular to the direction of movement of the drive armature. Alternatively, the blocking element can be rotatably mounted, so that the bias is impressed, for example, at one end of the blocking element, while the opposite end is provided for positive engagement in the locking recess.

Gemäß einer besonders bevorzugten Ausführungsform der Schnellauslöseanordnung ist vorgesehen, dass das Sperrelement eine Betätigungskontur aufweist, wobei eine Auslenkung des Sperrelements über die Betätigungskontur den Antriebsanker für eine Bewegung zurück in die Bereitschaftsposition freigibt. Die Auslenkung des Sperrelements erfolgt dabei beispielsweise durch eine Krafteinwirkung von außerhalb der Schnellauslöseanordnung. Gemäß einer weiteren, bevorzugten Ausführungsform der Schnellauslöseanordnung ist vorgesehen, dass die Haltevorrichtung durch einen Antrieb zum betriebsmäßigen Schalten des Schaltgeräts rücksetzbar ist, so dass der Antriebsanker zurück in die Bereitschaftsposition bewegbar ist. Diese besonders bevorzugte Ausführungsform bezieht sich auf alle vorstehend beschriebenen Ausführungsformen.According to a particularly preferred embodiment of the quick-release arrangement, it is provided that the blocking element has an actuating contour, wherein a deflection of the blocking element via the actuating contour releases the drive armature for movement back into the ready position. The deflection of the blocking element takes place, for example, by a force from outside the quick release arrangement. According to a further preferred embodiment of the quick-release arrangement, it is provided that the holding device can be reset by a drive for operational switching of the switching device, so that the drive armature can be moved back into the ready position. This particularly preferred embodiment relates to all the embodiments described above.

Gemäß der Erfindung weist das Schaltgerät ein Kontaktsystem aus mindestens einen Festkontakt, und mindestens einem Bewegkontakt auf, wobei der Bewegkontakt zum Schließen und Trennen eines Strompfades mittels eines Antriebs zum betriebsmäßigen Schalten reversibel zwischen einer Schließstellung und einer Öffnungsstellung gegenüber dem Festkontakt bewegbar ist. Erfindungsgemäß ist eine der zwei Varianten der erfindungsgemäßen Schnellauslöseanordnung, wie zuvor beschrieben, vorgesehen, wobei der Antriebsanker bei der Bewegung aus der Bereitschaftsposition in die Auslöseposition derart auf den Bewegkontakt einwirkt, dass der Bewegkontakt von der Schließstellung in die Öffnungsstellung gelangt und dort mittels der Haltevorrichtung dauerhaft gehalten wird. Das erfindungsgemäße Schaltgerät zum Ein- und Ausschalten eines Stroms durch den Strompfad weist mindestens einen Festkontakt und mindestens einen Bewegkontakt auf, wobei der Bewegkontakt zum Schließen und Trennen des Strompfades gegenüber dem Festkontakt bewegbar ist. Ein solches Kontaktsystem kann ein einzelnes Kontaktpaar aufweisen. Bevorzugt ist es doppeltunterbrechend ausgeführt, wobei zwei Bewegkontakte insbesondere über einen Bewegkontaktträger verbunden sind, um gegenüber zwei Festkontakten der Strombahn bewegbar zu sein. Im Folgenden werden die Bezeichnungen Bewegkontakt und Festkontakt verwendet, ohne jeweils auf die Möglichkeit einer Ausführungsform mit doppeltunterbrechendem Kontaktsystem einzugehen, da diese dem Fachmann geläufig ist. Insofern ist ein Bewegkontaktträger mit zwei Bewegkontakten durch den Begriff Bewegkontakt mit abgedeckt.According to the invention, the switching device has a contact system comprising at least one fixed contact, and at least one moving contact, wherein the moving contact for closing and disconnecting a current path by means of a drive for operational switching is reversibly movable between a closed position and an open position relative to the fixed contact. According to the invention, one of the two variants of the quick-release arrangement according to the invention, as described above, is provided, wherein the drive armature acts on the moving contact during movement from the standby position to the release position such that the moving contact passes from the closed position to the open position and there permanently by means of the holding device is held. The switching device according to the invention for switching on and off of a current through the current path has at least one fixed contact and at least one moving contact, wherein the moving contact for closing and separating the current path relative to the fixed contact is movable. Such a contact system may have a single contact pair. It is preferably carried out in a double-interrupting manner, wherein two moving contacts are connected in particular via a moving contact carrier in order to be movable relative to two fixed contacts of the current path. In the following, the terms moving contact and fixed contact will be used without going into the possibility of an embodiment with a double-break contact system, since this is familiar to the person skilled in the art. In this respect, a moving contact carrier with two moving contacts is covered by the term moving contact.

Gemäß einer bevorzugten Ausführungsform des Schaltgeräts ist vorgesehen, dass die Haltevorrichtung durch den Antrieb zum betriebsmäßigen Schalten des Schaltgeräts bei einem Ausschaltvorgang rücksetzbar ist. Dadurch wird eine besonders einfache und ohne manuelles Eingreifen durchführbare Rücksetzung in den Ausgangszustand möglich. Unter einem Rücksetzen ist im Sinne der Erfindung zu verstehen, dass der Antriebsanker der Schnellauslöseanordnung nach einem vorhergehenden Auslösen von der Haltevorrichtung freigegeben und insbesondere von der Auslöseposition zurück in die Bereitschaftsposition bewegt wird.According to a preferred embodiment of the switching device is provided that the holding device can be reset by the drive for operational switching of the switching device at a turn-off. This makes a particularly simple and feasible without manual intervention reset to the initial state possible. A reset is to be understood in the sense of the invention that the drive armature of the quick release arrangement is released after a previous release of the holding device and in particular is moved from the triggering position back to the standby position.

Bei der Haltevorrichtung mit einem permanentmagnetischen System ohne Spule ist bevorzugt vorgesehen, dass eine Kraft des Antriebs zum betriebsmäßigen Schalten bei dem Ausschaltvorgang auf den Halteanker einwirkt, um eine Haltekraft des permanentmagnetischen Systems zu überwinden.In the holding device with a permanent magnet system without a coil, it is preferably provided that a force of the drive for operational switching during the switch-off operation acts on the holding anchor in order to overcome a holding force of the permanent-magnetic system.

Bei der Haltevorrichtung mit einer mechanischen Verriegelung ist bevorzugt vorgesehen, dass der Antrieb zum betriebsmäßigen Schalten bei dem Ausschaltvorgang eine Betätigungskontur auslenkt.In the holding device with a mechanical lock, it is preferably provided that the drive deflects an actuating contour for operational switching during the switch-off operation.

Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen mit Bezug auf die beiliegenden Zeichnungen näher erläutert. Die Ausführungen sind lediglich beispielhaft und schränken den allgemeinen Erfindungsgedanken nicht ein.The invention will be explained in more detail by means of embodiments with reference to the accompanying drawings. The embodiments are merely exemplary and do not limit the general inventive concept.

Es zeigen

Figur 1
eine schematische Darstellung eines Schaltgeräts mit einer Schnellauslöseanordnung;
Figur 2
eine detaillierte Darstellung eines Teilbereichs eines erfindungsgemäßen Schaltgeräts mit einer ersten Ausführungsform einer erfindungsgemäßen Schnellauslöseanordnung in einer Bereitschaftsposition;
Figur 3
eine detaillierte Darstellung des Teilbereichs des Schaltgeräts gemäß Figur 2 mit der ersten Ausführungsform der Schnellauslöseanordnung in einer Auslöseposition;
Figur 4
eine detaillierte Darstellung eines Teilbereichs eines erfindungsgemäßen Schaltgeräts mit einer zweiten Ausführungsform der erfindungsgemäßen Schnellauslöseanordnung in einer Bereitschaftsposition;
Figur 5
eine detaillierte Darstellung des Teilbereichs des Schaltgeräts gemäß Figur 4 mit der zweiten Ausführungsform der Schnellauslöseanordnung in einer Auslöseposition;
Figur 6
eine detaillierte Darstellung eines Teilbereichs eines erfindungsgemäßen Schaltgeräts in einem ausgeschalteten Zustand, mit einer dritten Ausführungsform der erfindungsgemäßen Schnellauslöseanordnung in einer Bereitschaftsposition;
Figur 7
eine detaillierte Darstellung des Teilbereichs des Schaltgeräts gemäß Figur 6 in einem eingeschalteten Zustand;
Figur 8
eine detaillierte Darstellung des Teilbereichs des erfindungsgemäßen Schaltgeräts gemäß Figur 6, mit der dritten Ausführungsform der erfindungsgemäßen Schnellauslöseanordnung in einer Auslöseposition;
Figur 9
eine detaillierte Darstellung des Teilbereichs des Schaltgeräts gemäß Figur 6 während eines Zurücksetzens der dritten Ausführungsform der Schnellauslöseanordnung von der Auslöseposition in die Bereitschaftsposition;
Figur 10
eine Einzelheit der dritten Ausführungsform der Schnellauslöseanordnung im Detail.
Show it
FIG. 1
a schematic representation of a switching device with a quick release arrangement;
FIG. 2
a detailed representation of a portion of a switching device according to the invention with a first embodiment of a quick release arrangement according to the invention in a standby position;
FIG. 3
a detailed view of the portion of the switching device according to FIG. 2 with the first embodiment of the quick release arrangement in a release position;
FIG. 4
a detailed view of a portion of a switching device according to the invention with a second embodiment of the quick-release device according to the invention in a standby position;
FIG. 5
a detailed view of the portion of the switching device according to FIG. 4 with the second embodiment of the quick-release arrangement in a release position;
FIG. 6
a detailed representation of a portion of a switching device according to the invention in an off state, with a third embodiment of the quick-release device according to the invention in a standby position;
FIG. 7
a detailed view of the portion of the switching device according to FIG. 6 in an on state;
FIG. 8
a detailed view of the portion of the switching device according to the invention according to FIG. 6 with the third embodiment of the quick-release arrangement according to the invention in a release position;
FIG. 9
a detailed view of the portion of the switching device according to FIG. 6 while resetting the third embodiment of the quick release assembly from the trip position to the ready position;
FIG. 10
a detail of the third embodiment of the quick release arrangement in detail.

In der Figur 1 ist ein Schaltgerät vereinfacht und schematisch dargestellt, bei dem eine Schnellauslöseanordnung 2 und ein Antrieb 1 zum betriebsmäßigen Schalten in einem gemeinsamen Gehäuse angeordnet sind. Das Schaltgerät zum Ein- und Ausschalten eines Stroms durch einen Strompfad 10 weist dazu zwei Festkontakte 11, 12 auf, welche mit zwei Bewegkontakten 14, 15 an einem Bewegkontaktträger 16 zum Schließen und Trennen des Strompfads 10 zusammenwirken. Der elektromagnetische Antrieb 1 dient zum betriebsmäßigen Bewegen des Bewegkontaktträgers 16 zwischen einer nicht abgebildeten Schließstellung mit geschlossenen Kontaktpaaren 11, 14 und 12, 15 und einer hier dargestellten Öffiiungsstellung. Die Schnellauslöseanordnung 2 zum Trennen des Strompfads 10 bei einem Kurzschluss oder bei einer Überlast ist hier ebenfalls nur schematisch dargestellt. Konkrete Merkmale, welche die erfindungsgemäße Schnellauslöseanordnung 2 und das erfindungsgemäße Schaltgerät charakterisieren, werden mit Bezug auf die weiteren Figuren näher beschrieben. Der Antrieb 1 zum betriebsmäßigen Schalten wirkt beispielsweise über eine Mechanik auf den Bewegkontaktträger 16 ein, hier in Form einer schematisch dargestellten Wippe 34, welche in einen Drehpunkt 6 drehbar gelagert ist. Wirkt der Antrieb 1 an einem distalen Ende auf die Wippe 34 ein, so wird der Bewegkontaktträger 16 mit den Bewegkontakten 14, 15 auf die Festkontakte 11, 12 zu bewegt und so der Strompfad 10 geschlossen. Ein Antrieb 3 der Schnellauslöseanordnung 2 wirkt beispielsweise in gleicher Richtung, wie der Antrieb 1 zum betriebsmäßigen Schalten, jedoch auf einen Betätiger 8, welcher die Kraft des Antriebs 3 direkt auf den Bewegkontaktträger 16 mit den Bewegkontakten 14, 15 überträgt und dadurch diese von den Festkontakten 11, 12 entfernt, so dass der Strompfad 10 unterbrochen wird. Grundsätzlich könnte der Antrieb 3 auch auf der gegenüberliegenden Seite des Drehpunkts 6 auf die Wippe 8 einwirken, was jedoch ein Abfallen des trägen Antriebs 1 zum betriebsmäßigen Schalten aus der Mechanik bedingen würde.In the FIG. 1 is a switching device simplified and shown schematically, in which a quick release assembly 2 and a drive 1 are arranged for operational switching in a common housing. The switching device for switching on and off of a current through a current path 10 has for this purpose two fixed contacts 11, 12 which cooperate with two moving contacts 14, 15 on a moving contact carrier 16 for closing and disconnecting the current path 10. The electromagnetic drive 1 is used for operationally moving the Bewegkontaktträgers 16 between a non-illustrated closed position with closed contact pairs 11, 14 and 12, 15 and a Öffiiungsstellung illustrated here. The quick release arrangement 2 for disconnecting the current path 10 in the event of a short circuit or overload is likewise only shown schematically here. Concrete features which characterize the quick release arrangement 2 according to the invention and the switching device according to the invention will be described in more detail with reference to the further figures. The drive 1 for operational switching acts, for example via a mechanism on the Bewegkontaktträger 16, here in the form of a schematically illustrated rocker 34 which is rotatably mounted in a pivot point 6. If the drive 1 acts on the rocker 34 at a distal end, then the moving contact carrier 16 with the moving contacts 14, 15 is moved towards the fixed contacts 11, 12, thus closing the current path 10. A drive 3 of the quick release arrangement 2 acts, for example, in the same direction as the drive 1 for operational switching, but on an actuator 8, which transmits the force of the drive 3 directly to the Bewegkontaktträger 16 with the Bewegkontakten 14, 15 and thereby this of the fixed contacts 11, 12, so that the current path 10 is interrupted. In principle, the drive 3 could also act on the rocker 8 on the opposite side of the pivot point 6, which, however, would require a drop of the inertial drive 1 for operational switching out of the mechanism.

Das Abschalten von Kurzschlüssen erfordert zum einen ein sehr schnelles und zum anderen ein idealerweise dauerhaftes Trennen der Bewegkontakte 14, 15 von den Festkontakten 11, 12. Bei Kurzschlussströmen erfolgt die Ausschaltung durch die Schnellauslöseanordnung 2, wobei ein erstes Anheben der Bewegkontakte 14, 15 durch elektrodynamische Abhebekräfte hervorgerufen wird. Durch das Trennen der Bewegkontakte 14, 15 von den Festkontakten 11, 12 entstehen Lichtbögen, welche jeweils in Löschsysteme 21 geleitet werden. Erfindungsgemäß ist eine mit Bezug auf die Figuren 2 bis 8 zu beschreibende Haltevorrichtung 20 vorgesehen, um die durch den Antrieb 3 getrennten Bewegkontakte 14, 15 dauerhaft geöffnet zu halten, um bei einer Reduzierung des den Antrieb 3 anziehenden Erregerstroms, aufgrund des Löschvorgangs, ein Zurückfallen der Bewegkontakte 14, 15 zu vermeiden. Dadurch wird vorteilhaft ein Rückzünden der Lichtbögen oder gar ein Verschweißen der Bewegkontakte 14, 15 mit den Festkontakten 11, 12 vermieden.The shutting down of shorts requires on the one hand a very fast and, on the other hand, an ideally permanent disconnection of the moving contacts 14, 15 from the fixed contacts 11, 12. In the case of short-circuit currents, the switch-off is effected by the rapid release arrangement 2, wherein a first lifting of the moving contacts 14, 15 by electrodynamic Lifting forces is caused. By separating the moving contacts 14, 15 of the fixed contacts 11, 12 arcs arise, which are each conducted in extinguishing systems 21. According to the invention with respect to the FIGS. 2 to 8 to be described holding device 20 is provided to keep the separated by the drive 3 moving contacts 14, 15 permanently open to avoid falling back the moving contacts 14, 15 in a reduction of the drive 3 attractive excitation current, due to the deletion. As a result, a flashback of the arcs or even a welding of the moving contacts 14, 15 with the fixed contacts 11, 12 is advantageously avoided.

In den Figuren 2 bis 9 ist von dem Schaltgerät neben der Schnellauslöseanordnung 2 mit der Halteanordnung 20 jeweils der Strompfad 10 mit den Festkontakten 11, 12 und den Bewegkontakten 14, 15 an dem Bewegkontaktträger 16 dargestellt, wobei letzterer durch eine Kontaktdruckfeder 5 in Richtung der Schließstellung vorgespannt ist. Der elektromagnetische Antrieb 1 zum betriebsmäßigen Schalten ist zur Vereinfachung in den Figuren 2 bis 5 nicht dargestellt. In den Figuren 6 bis 9 ist der elektromagnetische Antrieb 1 dargestellt, jedoch zur Vereinfachung ohne die zum betriebsmäßigen Ein- und Ausschalten vorgesehene Mechanik, welche die Kraft auf den Bewegkontaktträger 16 überträgt, um die betriebsmäßigen Schaltvorgänge auszuführen. Der Aufbau eines entsprechenden Schützantriebs 1 ist dem Fachmann hinlänglich bekannt. Identische Bauteile der beschriebenen Ausführungsformen weisen gleiche Bezugszeichen auf und werden im Folgenden nicht in Bezug auf jede Figur wiederholt.In the FIGS. 2 to 9 is shown by the switching device in addition to the quick release assembly 2 with the holding assembly 20 each of the current path 10 with the fixed contacts 11, 12 and the Bewegkontakten 14, 15 on the Bewegkontaktträger 16, the latter is biased by a contact pressure spring 5 in the direction of the closed position. The electromagnetic drive 1 for operational switching is for simplicity in the FIGS. 2 to 5 not shown. In the FIGS. 6 to 9 the electromagnetic drive 1 is shown, but for the sake of simplicity, without the mechanism provided for operational switching on and off, which transmits the force to the moving contact carrier 16 in order to carry out the operative switching operations. The construction of a corresponding contactor drive 1 is well known to those skilled in the art. Identical components of the described embodiments have the same reference numerals and will not be repeated below with respect to each figure.

In der Figur 2 ist eine detaillierte Ansicht eines Teilbereichs eines erfindungsgemäßen Schaltgeräts mit einer ersten Ausführungsform einer erfindungsgemäßen Schnellauslöseanordnung 2 in einer Bereitschaftsposition dargestellt, welche in der ansonsten identischen Figur 3 in einer Auslöseposition dargestellt ist. Das heißt, die beispielsweise durch einen Kurzschluss ausgelöste Schnellauslöseanordnung 2 hat den Strompfad 10 getrennt, nicht der Antrieb 1 zum betriebsmäßigen Schalten. Im Ergebnis befinden sich die Bewegkontakte 14, 15 so oder so in der Öffnungsstellung, wenn die ausgelöste Schnellauslöseanordnung 2 in die Auslöseposition gemäß Figur 3 bewegt wurde. Dazu weist die Schnellauslöseanordnung 2 den elektromagnetischen Antrieb 3 mit einem Anker 4 und einer Magnetspule 7 auf. Fließt ein Erregerstrom durch die Magnetspule 7, beispielsweise bei einem Kurzschluss, wird der Anker 4 angezogen, der über den Betätiger 8 und den Bewegkontaktträger 16 auf die in der Regel durch die elektrodynamischen Abhebekräfte bereits von den Festkontakten 11, 12 abgehobenen Bewegkontakte 14, 15 einwirkt und diese entgegen der Kraft der Kontaktdruckfeder 5 in die Öffnungsstellung drückt. In alternativer Ausgestaltung kann der Anker 4 auch direkt auf den Bewegkontaktträger 16 oder die Bewegkontakte 14, 15 einwirken. Der Betätiger 8, der hier durch einen Kern 9 des Antriebs 3 geführt ist, kann als Schlaggabel ausgeführt sein. In der Regel ist der Betätiger 8 unabhängig von der nicht dargestellten Mechanik zum Übertragen der Kraft des Antriebs 1 zum betriebsmäßigen Schalten bewegbar.In the FIG. 2 is a detailed view of a portion of a switching device according to the invention with a first embodiment of a quick release device 2 according to the invention shown in a standby position, which in the otherwise identical FIG. 3 is shown in a trip position. That is, the quick trip device 2 triggered by, for example, a short circuit has disconnected the current path 10, not the drive 1 for operational switching. As a result, the moving contacts 14, 15 are or in the open position, when the triggered quick release arrangement 2 in the Triggering position according to FIG. 3 was moved. For this purpose, the rapid release arrangement 2 the electromagnetic drive 3 with an armature 4 and a magnetic coil 7. If an exciter current flows through the magnet coil 7, for example in the case of a short circuit, the armature 4 is attracted, which acts via the actuator 8 and the moving contact carrier 16 on the moving contacts 14, 15 which are usually lifted by the electrodynamic lifting forces already from the fixed contacts 11, 12 and this presses against the force of the contact pressure spring 5 in the open position. In an alternative embodiment, the armature 4 can also act directly on the moving contact carrier 16 or the moving contacts 14, 15. The actuator 8, which is guided here by a core 9 of the drive 3, can be designed as a striking fork. In general, the actuator 8 is independent of the mechanism, not shown, for transmitting the power of the drive 1 for operative switching movable.

Erfindungsgemäß weist die Schnellauslöseanordnung 2 des Weiteren eine Haltevorrichtung 20 zum Halten des Antriebsankers 4 in der Auslöseposition auf. Gemäß einer Ausführungsform weist die Haltevorrichtung 20 einen mit dem Antriebsanker 4 starr gekoppelten Halteanker 19, sowie eine Magnetanordnung 18 auf, wobei der Halteanker 19 durch eine Magnetkraft der Magnetanordnung 18 in einer in der Figur 3 dargestellten Halteposition gehalten wird, sobald der Antriebsanker 4 die Auslöseposition erreicht. In der ersten Ausführungsform der Schnellauslöseanordnung 2, gemäß Figuren 2 und 3, weist die Magnetanordnung 18 nur ein permanentmagnetisches System 23 auf, keinen Elektromagneten. Der Halteanker 19 ist durch einen Endbereich eines Arms 17 gebildet, der als starre Kopplung 17 zwischen dem Antriebsanker 4 und dem Halteanker 19 dient. Die Haltevorrichtung 20 ist vorzugsweise durch den in Figur 1 dargestellten Antrieb 1 zum betriebsmäßigen Schalten des Schaltgeräts bei einem Ausschaltvorgang rücksetzbar, beispielsweise, indem die Kraft des Antriebs 1 zum betriebsmäßigen Schalten bei dem Ausschaltvorgang auf den Halteanker 19 einwirkt, um eine Haltekraft des permanentmagnetischen Systems 23 zu überwinden.According to the invention, the quick release arrangement 2 further comprises a holding device 20 for holding the drive armature 4 in the release position. According to one embodiment, the holding device 20 has a holding armature 19, which is rigidly coupled to the drive armature 4, and a magnet arrangement 18, wherein the holding armature 19 is actuated by a magnetic force of the magnet arrangement 18 in one in the FIG. 3 shown holding position is held as soon as the drive armature 4 reaches the tripping position. In the first embodiment of the quick release arrangement 2, according to Figures 2 and 3 , The magnet assembly 18 only a permanent magnetic system 23, no electromagnet. The retaining anchor 19 is formed by an end portion of an arm 17 which serves as a rigid coupling 17 between the drive armature 4 and the retaining anchor 19. The holding device 20 is preferably by the in FIG. 1 illustrated drive 1 for operational switching of the switching device at a turn-off reset, for example, by the force of the drive 1 for operational switching in the turn-off acts on the retaining armature 19 to overcome a holding force of the permanent magnetic system 23.

In der Figur 4 ist eine detaillierte Ansicht eines Teilbereichs eines erfindungsgemäßen Schaltgeräts mit einer zweiten Ausführungsform der erfindungsgemäßen Schnellauslöseanordnung 2 in der Bereitschaftsposition dargestellt, welche in der ansonsten identischen Figur 5 in der Auslöseposition dargestellt ist. Die zweite Ausführungsform unterscheidet sich von der ersten Ausführungsform dadurch, dass die Magnetanordnung 18 eine Spule 22 aufweist. Der Halteanker 19 ist hier als separates Bauteil an einem Ende der starren Kopplung 17 befestigt und wird dadurch parallel durch den Antriebsanker 4 mitbewegt. Die zweite Ausführungsform kann mit zwei Varianten der Magnetanordnung 18 realisiert werden, die beide im Zusammenhang mit den Figuren 4 und 5 beschrieben werden.In the FIG. 4 is a detailed view of a portion of a switching device according to the invention with a second embodiment of the quick release assembly 2 according to the invention shown in the standby position, which in the otherwise identical FIG. 5 is shown in the trip position. The second embodiment is different from The first embodiment in that the magnet assembly 18 has a coil 22. The retaining anchor 19 is attached here as a separate component at one end of the rigid coupling 17 and is thereby moved in parallel by the drive armature 4. The second embodiment can be realized with two variants of the magnet assembly 18, both in connection with the FIGS. 4 and 5 to be discribed.

Gemäß einer Variante weist die Magnetanordnung 18 die Spule 22 auf, jedoch keinen Permanentmagneten. Der Halteanker 19 wird also durch eine elektromagnetische Kraft der Spule 22 in der Halteposition gehalten. Ein Vorteil besteht darin, dass der Halteanker 19 durch ein Abschalten der Spule 22 freigebbar ist, so dass eine Rücksetzung der Schnellauslöseanordnung 2 in die Bereitschaftsposition besonders einfach realisierbar ist.According to a variant, the magnet arrangement 18 has the coil 22, but no permanent magnet. The holding armature 19 is thus held by an electromagnetic force of the coil 22 in the holding position. One advantage is that the holding armature 19 can be released by switching off the coil 22, so that a reset of the quick release arrangement 2 in the ready position is particularly easy to implement.

Eine weitere Variante der Magnetanordnung 18 besteht darin, dass ein permanentmagnetisches System 35 vorgesehen ist, um den Halteanker 19 in der Halteposition zu halten. Die Spule 22 ist zur Erzeugung einer elektromagnetischen Kraft vorgesehen ist, um die magnetische Kraft des permanentmagnetischen Systems 35 zu überwinden und den Halteanker 19 freizugeben.Another variant of the magnet assembly 18 is that a permanent magnetic system 35 is provided to hold the retaining armature 19 in the holding position. The coil 22 is provided to generate an electromagnetic force to overcome the magnetic force of the permanent magnetic system 35 and release the retaining armature 19.

Nach dem Freigeben des Halteankers 19 kehrt der Antriebsanker 4 bei beiden Varianten in seine Bereitschaftsposition zurück, wodurch die Schnellauslöseanordnung 2 zurückgesetzt wird und wieder einsatzbereit ist. Dazu kann der Antriebsanker 4 beispielsweise in nicht dargestellter Weise in Richtung seiner Bereitschaftsposition vorgespannt sein. Alternativ erfolgt ein Rücksetzen der Schnellauslöseanordnung 2 durch den Antrieb 1 zum betriebsmäßigen Schalten.After releasing the retaining armature 19, the drive armature 4 returns to its standby position in both variants, as a result of which the quick release arrangement 2 is reset and ready for use again. For this purpose, the drive armature 4 may be biased for example in a manner not shown in the direction of its standby position. Alternatively, a reset of the quick release assembly 2 by the drive 1 for operational switching.

Eine dritte Ausführungsform der erfindungsgemäßen Schnellauslöseanordnung 2 wird nachfolgend mit Bezug auf die Figuren 6 bis 10 beschrieben. In der Figur 6 ist ein Teilbereich des erfindungsgemäßen Schaltgeräts in einem ausgeschalteten Zustand detailliert dargestellt, mit der Schnellauslöseanordnung 2 in einer Bereitschaftsposition. In der Figur 7 ist das Schaltgerät in einem eingeschalteten Zustand dargestellt. Die Figur 8 zeigt das Schaltgerät mit der Schnellauslöseanordnung 2 in der Auslöseposition. In der Figur 9 ist das Schaltgerät während des Zurücksetzens der Schnellauslöseanordnung 2 von der Auslöseposition in die Bereitschaftsposition dargestellt. In den Figuren 6 bis 9 ist der elektromagnetische Antrieb 1 zum betriebsmäßigen Schalten zur Vereinfachung ohne die zum Ein- und Ausschalten vorgesehene Mechanik dargestellt, welche beispielsweise auf den Betätiger 8 einwirken kann, oder den Schaltvorgang unabhängig davon ausführt. Der Antrieb 1 weist einen Anker 30 auf. Der Fachmann erkennt, dass eine Bewegung des Ankers 30 entsprechend auf den Bewegkontaktträger 16 übertragen wird, um die Bewegkontakte 14, 15 beim betriebsmäßigen Schalten zwischen der Öffnungsposition und der Schließposition hin und her zu bewegen, beispielsweise mit einer Mechanik entsprechend der Wippe 34 (Figur 1).A third embodiment of the quick release arrangement 2 according to the invention will be described below with reference to FIGS FIGS. 6 to 10 described. In the FIG. 6 a portion of the switching device according to the invention in a turned off state is shown in detail, with the quick release device 2 in a standby position. In the FIG. 7 the switching device is shown in an on state. The FIG. 8 shows the switching device with the quick release assembly 2 in the trip position. In the FIG. 9 the switching device is shown during the resetting of the quick release assembly 2 from the release position to the standby position. In the FIGS. 6 to 9 is the electromagnetic drive 1 shown for operational switching for simplicity without the mechanism provided for switching on and off, which can act on the actuator 8, for example, or performs the switching operation independently thereof. The drive 1 has an armature 30. A person skilled in the art recognizes that a movement of the armature 30 is correspondingly transmitted to the moving contact carrier 16 in order to move the moving contacts 14, 15 between the open position and the closed position during the operational switching, for example with a mechanism corresponding to the rocker 34 (FIG. FIG. 1 ).

Die dritte Ausführungsform der Schnellauslöseanordnung 2 unterscheidet sich dadurch von den zuvor beschriebenen Ausführungsformen, dass die Haltevorrichtung 20 eine mechanische Verriegelung für den Antriebsanker 4 aufweist, welche direkt auf den Antriebsanker 4 einwirkt, so dass kein mitgeführter Halteanker notwendig ist. Die Haltevorrichtung 20 weist dazu beispielsweise ein mittels einer Druckfeder 27 gegen den Antriebsanker 4 vorgespanntes Sperrelement 25 auf, welches in der Figur 10 als Einzelheit im Detail dargestellt ist. Das Sperrelement 25 weist eine Öffnung 28 auf, durch welche der Antriebsanker 4 hindurchgeführt ist. In die Öffnung hinein ragt eine Rastnase 29. Tritt bei geschlossenem Strompfad 10 gemäß Figur 7 eine Überlast oder ein Kurzschluss auf, wird die Schnellauslöseanordnung 2 ausgelöst, so dass der Antriebsanker 4 angezogen wird und aus der Bereitschaftsposition in die Auslöseposition bewegt wird und dabei über den Betätiger 8 die Bewegkontakte 14, 15 in die Öffnungsposition drückt, wie in Figur 8 gezeigt. Bei Erreichen der Auslöseposition gelangt eine Rastausnehmung 24 an dem Antriebsanker 4 in den Bereich des Sperrelements 25, dessen Rastnase 29 (Figur 10) daraufhin durch die Vorspannung der Druckfeder 27 in die Rastausnehmung 24 hinein bewegt wird. Das Sperrelement 25 verriegelt somit den Antriebsanker 4 formschlüssig in der Auslöseposition, so dass ein erneutes Schließen der Strombahn 10, ein Wiederzünden des Lichtbogens und ein Verschweißen der Kontakte verhindert werden. Das Sperrelement 25 verrastet dabei insbesondere mit einer Hinterschneidung der Rastausnehmung 24, um ein unbeabsichtigtes Entriegeln des eingerasteten Sperrelements 25 zu verhindern.The third embodiment of the quick release arrangement 2 differs from the previously described embodiments in that the holding device 20 has a mechanical lock for the drive armature 4, which acts directly on the drive armature 4, so that no entrained retaining anchor is necessary. For this purpose, the holding device 20 has, for example, a blocking element 25, which is prestressed against the drive armature 4 by means of a compression spring 27, which in the FIG. 10 as a detail is shown in detail. The blocking element 25 has an opening 28, through which the drive armature 4 is passed. In the opening projects into a latch 29. Occurs when the current path 10 is closed according to FIG. 7 an overload or a short circuit, the quick release assembly 2 is triggered, so that the drive armature 4 is attracted and is moved from the standby position to the release position and presses on the actuator 8, the moving contacts 14, 15 in the open position, as in FIG. 8 shown. Upon reaching the release position, a latching recess 24 passes on the drive armature 4 in the region of the locking element 25, the latching lug 29 (FIG. FIG. 10 ) is then moved by the bias of the compression spring 27 into the recess 24 into it. The blocking element 25 thus locks the drive armature 4 in a form-fitting manner in the release position, so that a renewed closing of the flow path 10, a reignition of the arc and a welding of the contacts are prevented. The locking element 25 locks in particular with an undercut of the latching recess 24 to prevent inadvertent unlocking of the latched locking element 25.

Das Rücksetzen der dritten Ausführungsform der Schnellauslöseanordnung 2 wird nachfolgend mit Bezug auf die Figur 9 beschrieben. An dem Anker 30 des Antriebs 1 zum betriebsmäßigen Schalten ist ein Betätigungsarm 31 angeordnet, welcher dazu vorgesehen ist, das Sperrelement 25 entgegen der Kraftwirkung der Druckfeder 27 zu bewegen, um die Sperre des Antriebsankers 4 zu lösen. Eine Abdruckfeder 33 bewegt den Antriebsanker 4 zurück in seine Bereitschaftsposition. Das Sperrelement 25 weist dazu eine Betätigungskontur 26 auf, die mit einer Gegenkontur 32 an dem Betätigungsarm 31 zusammenwirkt, der bei einem Ausschaltvorgang von dem Antrieb 1 zum betriebsmäßigen Schalten mit dem Anker 30 bewegt wird. Die Auslenkung des Sperrelements 25 über die Betätigungskontur 26, bei welcher der Antriebsanker 4 freigegeben wird, ist in der Figur 9 dargestellt. Das Rücksetzen erfolgt somit nach einem vorherigen Auslösen der Schnellauslösevorrichtung 2 durch einen Ausschaltvorgang des Antriebs 1 zum betriebsmäßigen Schalten.The resetting of the third embodiment of the quick release arrangement 2 will be described below with reference to FIGS FIG. 9 described. On the armature 30 of the drive 1 for operative switching, an actuating arm 31 is arranged, which is intended to move the locking element 25 against the force of the compression spring 27 to the Lock the drive armature 4 to solve. An impression spring 33 moves the drive armature 4 back to its standby position. For this purpose, the blocking element 25 has an actuating contour 26 which interacts with a mating contour 32 on the actuating arm 31, which is moved by the drive 1 for operative switching with the armature 30 during a switch-off operation. The deflection of the blocking element 25 via the actuating contour 26, in which the drive armature 4 is released, is in the FIG. 9 shown. The reset is thus carried out after a previous release of the quick release device 2 by a switch-off of the drive 1 for operational switching.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Antrieb zum betriebsmäßigen Schalten des SchaltgerätsDrive for operational switching of the switching device
22
SchnellauslöseanordnungQuick-release arrangement
33
Antrieb der SchnellauslöseanordnungDrive of the quick release arrangement
44
Antriebsankerdrive anchor
55
KontaktdruckfederContact pressure spring
66
Drehpunktpivot point
77
Magnetspulesolenoid
88th
Betätigeractuator
99
Kern des SchnellauslösersCore of the quick release
1010
Strompfadcurrent path
1111
Festkontaktfixed contact
1212
Festkontaktfixed contact
1414
Bewegkontaktmoving contact
1515
Bewegkontaktmoving contact
1616
BewegkontaktträgerBewegkontaktträger
1717
Starre Kopplung, ArmRigid coupling, arm
1818
Magnetanordnungmagnet assembly
1919
HalteankerRestraint ties
2020
Haltevorrichtungholder
2121
Löschsystem für LichtbogenExtinguishing system for electric arc
2222
Spule der HaltevorrichtungCoil of the holding device
2323
Permanentmagnetisches SystemPermanent magnetic system
2424
Rastausnehmungrecess
2525
Sperrelementblocking element
2626
Betätigungskonturactuating contour
2727
Druckfedercompression spring
2828
Öffnungopening
2929
Rastnaselocking lug
3030
Anker des Antriebs zum betriebsmäßigen Schalten des SchaltgerätsAnchor of the drive for operational switching of the switching device
3131
Betätigungsarmactuating arm
3232
Gegenkonturmating contour
3333
Abdruckfederimpression spring
3434
Wippeseesaw
3535
Permanentmagnetisches SystemPermanent magnetic system

Claims (13)

  1. Switching device having a contact system, having a fast triggering arrangement (2) for cutting a current path (10) in the switching device in the case of a short circuit or in the case of an overload, having a drive (3) for moving a drive anchor (4) from a readiness position into a trigger position, wherein the drive anchor is provided to act on at least one moving contact (14, 15) of the switching device such that the current path is cut, wherein a holding device (20) is provided for holding the drive anchor (4) in the trigger position, wherein the holding device (20) has a holding anchor (19) rigidly coupled with the drive anchor (4) and a magnet arrangement (18), wherein the holding anchor is held by means of a magnetic force of the magnet arrangement in a holding position as soon as the drive anchor reaches the trigger position, wherein the contact system consists of at least one fixed contact (11, 12) and the at least one moving contact (14, 15), characterised in that the moving contact for closing and cutting the current path (10) by means of a drive (1) for normal switching is reversibly movable with respect to the fixed contact between a closed position and an open position, and that the fast triggering arrangement is provided exclusively for cutting the current path in the switching device in the case of a short circuit or in the case of an overload and is independent from the drive for the normal switching of the switching device.
  2. Switching device according to claim 1, characterised in that the magnet arrangement (18) has a coil (22).
  3. Switching device according to claim 2, characterised in that an electromagnetic force of the current-carrying coil (22) holds the holding anchor (19) in the holding position.
  4. Switching device according to claim 3, characterised in that the holding anchor (19) can be released by a switching-off of the coil (22).
  5. Switching device according to any of claims 1 or 2, characterised in that the magnet arrangement (18) has a permanent magnetic system (23, 35) in order to hold the holding anchor (19) in the holding position.
  6. Switching device according to claim 5, characterised in that the coil (22) is provided for generating an electromagnetic force in order to overcome the magnetic force of the permanent magnetic system (35) and to release the holding anchor (19).
  7. Switching device having a contact system having a fast triggering arrangement (2) for cutting a current path (10) in the switching device in the case of a short circuit or in the case of an overload, having a drive (3) for moving a drive anchor (4) from a readiness position into a trigger position, wherein the drive anchor is provided to act on at least one moving contact (14, 15) of the switching device such that the current path is cut, wherein a holding device (20) is provided for holding the drive anchor (4) in the trigger position, wherein the holding device (20) has a mechanical locking device having a locking element (25) biased against the drive anchor (4), wherein the locking element locks the drive anchor form-fittingly in the trigger position, wherein the contact system consists of at least one fixed contact (11, 12) and the at least one moving contact (14, 15), characterised in that the moving contact for closing and cutting the current path (10) by means of a drive (1) for normal switching is reversibly movable with respect to the fixed contact between a closed position and an open position, and that the fast triggering arrangement is provided exclusively for cutting the current path in the switching device in the case of a short circuit or in the case of an overload and is independent from the drive for the normal switching of the switching device.
  8. Switching device according to claim 7, characterised in that the locking element (25) latches in a latch recess (24) having an undercut on the drive anchor (4).
  9. Switching device according to any of claims 7 or 8, characterised in that the locking element (25) has an actuating contour (26), wherein a displacement of the locking element via the actuating contour releases the drive anchor (4) for a movement back into the readiness position.
  10. Switching device according to any of the preceding claims, characterised in that the holding device (20) can be reset via a drive (1) for the normal switching of the switching device, such that the drive anchor (4) can be moved back into the readiness position.
  11. Switching device according to any of the preceding claims, characterised in that the holding device (20) can be reset via the drive (23) for the normal switching of the switching device in the case of a switch-off procedure.
  12. Switching device according to claim 11, referring back to any of claims 5 or 6, characterised in that in the case of the holding device (20) having the permanent magnetic system (23) a force of the drive (1) acts on the holding anchor (4) for the normal switching in the case of the switch-off procedure in order to overcome a holding force of the permanent magnetic system.
  13. Switching device according to claim 11, referring back to claim 9, characterised in that in the case of the holding device having a mechanical locking system the drive (1) displaces the actuating contour (26) for the normal switching in the case of the switch-off procedure.
EP15800786.4A 2014-11-28 2015-11-24 Fast triggering arrangement for cutting a current path in a switching device Active EP3224851B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15800786T PL3224851T3 (en) 2014-11-28 2015-11-24 Fast triggering arrangement for cutting a current path in a switching device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014117489.5A DE102014117489A1 (en) 2014-11-28 2014-11-28 Quick release arrangement for disconnecting a current path in a switching device
PCT/EP2015/077475 WO2016083359A1 (en) 2014-11-28 2015-11-24 High-speed circuit breaking array for breaking a current path in a switching device

Publications (2)

Publication Number Publication Date
EP3224851A1 EP3224851A1 (en) 2017-10-04
EP3224851B1 true EP3224851B1 (en) 2019-10-23

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EP15800786.4A Active EP3224851B1 (en) 2014-11-28 2015-11-24 Fast triggering arrangement for cutting a current path in a switching device

Country Status (6)

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US (1) US10217589B2 (en)
EP (1) EP3224851B1 (en)
CN (1) CN107210163B (en)
DE (1) DE102014117489A1 (en)
PL (1) PL3224851T3 (en)
WO (1) WO2016083359A1 (en)

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WO2023025794A1 (en) 2021-08-25 2023-03-02 Elpro Gmbh Switching device

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KR101783734B1 (en) * 2015-12-30 2017-10-11 주식회사 효성 Actuator for fast-switch
FR3074355B1 (en) * 2017-11-28 2020-12-18 Schneider Electric Ind Sas ELECTRIC CURRENT CUT-OFF DEVICE
EP3834221B1 (en) * 2018-08-07 2023-02-15 Lisa Dräxlmaier GmbH Switching device for the controlled switching of an electrical connection and method for the controlled switching of an electrical connection
DE102018222466B4 (en) * 2018-12-20 2020-10-29 Audi Ag Contactor for an electric vehicle and electric vehicle
CN112002602B (en) * 2020-06-18 2022-09-27 平高集团有限公司 High-speed switch
CN113658832A (en) * 2021-08-12 2021-11-16 广东电网有限责任公司 Double-power tripper

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Also Published As

Publication number Publication date
CN107210163A (en) 2017-09-26
US10217589B2 (en) 2019-02-26
PL3224851T3 (en) 2020-05-18
EP3224851A1 (en) 2017-10-04
DE102014117489A1 (en) 2016-06-02
CN107210163B (en) 2020-02-07
US20170345595A1 (en) 2017-11-30
WO2016083359A1 (en) 2016-06-02

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