EP2864995B1 - Contacteur avec verrou de commutation électromagnétique - Google Patents

Contacteur avec verrou de commutation électromagnétique Download PDF

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Publication number
EP2864995B1
EP2864995B1 EP12750346.4A EP12750346A EP2864995B1 EP 2864995 B1 EP2864995 B1 EP 2864995B1 EP 12750346 A EP12750346 A EP 12750346A EP 2864995 B1 EP2864995 B1 EP 2864995B1
Authority
EP
European Patent Office
Prior art keywords
switching device
movable contact
magnet coil
contact
circuit
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
EP12750346.4A
Other languages
German (de)
English (en)
Other versions
EP2864995A1 (fr
Inventor
Enrico Bindl
Andreas Krätzschmar
Holger Neubert
Johannes Bohm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2864995A1 publication Critical patent/EP2864995A1/fr
Application granted granted Critical
Publication of EP2864995B1 publication Critical patent/EP2864995B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2209—Polarised relays with rectilinearly movable armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1692—Electromagnets or actuators with two coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts

Definitions

  • the invention relates to a switching device according to the preamble of claim 1.
  • the invention relates in particular to a remotely operable motor output with switching and protective function, in particular to an integrated solution that both the operational switching at normal load and the switching off in overload or short circuit using a device.
  • Conventional switching devices of this type are usually equipped with two drives, one of which is provided for the operational switching and the shutdown in case of overload, while the other drive is used for rapid shutdown in the event of a short circuit.
  • an electromagnetic reluctance drive is provided for operational switching and off in case of overload.
  • rapid shutdown in case of short circuit serves a mechanical switch lock, which is provided with one or more springs as energy storage. The maximum permissible switch-off times in the event of a short circuit, which are typically set at 5 ms today, must be observed only with such a switch lock.
  • a circuit breaker according to the preamble of claim 1 is DE 103 39 214 B4 known. However, this document does not disclose means for rapid shutdown in the event of a short circuit.
  • a low-voltage switching device which comprises a single- or multi-pole contact system with a corresponding number of fixed contacts and movable contacts.
  • the movable contacts are movable by means of a magnet armature.
  • the low-voltage device has at least one magnetic coil and a desired switching trigger, wherein the magnet armature operates bistable.
  • the low-voltage switching device is provided with an overcurrent protection circuit, which causes an overcurrent above a limit overcurrent to at least one switched pole after one with a minimum possible time delay, a DC excitation of the solenoid.
  • WO 2007/079767 A1 discloses a method of operating a switching device comprising at least one electromagnetic drive.
  • the electromagnetic drive in this case has a movable armature which is designed to open and close at least one main contact of the switching device.
  • the electromagnetic drive includes an excitation coil adapted to generate a magnetic field that causes movement of an armature.
  • the armature is further provided at one end with a return spring which exerts a force on the armature.
  • a solenoid actuator that includes two solenoids that are capable of moving an armature between an open and a closed position.
  • the armature can by magnetic forces, which exerts a permanent magnet on the armature, in operation at the attacks of his Stroke be held so that the Magnetaktuator is bistable as a whole.
  • the invention has for its object to provide a switching device that allows both the operational switching on and off, as well as the shutdown in case of overload and the emergency shutdown in the event of short circuit, but at the same time is particularly simple and compact feasible. Desirable characteristics of the specified switching device further consist in that the rapid shutdown should be vorappelbar in the event of a short circuit by an electrical signal that the switching device should be reset automatically or by remote action in the operating state after the rapid shutdown, and that the switching device "failsave" (ie also error operate safely) should be.
  • the switching device therefore has a main contact system, an electromagnetic drive unit and a coupling member.
  • the main contact system is used for reversible closing and disconnecting a current path and for this purpose comprises at least one fixed contact and at least one associated moving contact, wherein the moving contact between two switching positions, namely a closed position and an open position relative to the fixed contact is movable.
  • the main contact system in per se conventional design two via a jumper together firmly connected moving contacts, each moving contact with an associated fixed contact corresponds and wherein the moving contacts can be brought together and simultaneously with the associated fixed contacts in plant and lifted from them.
  • the switching device can also be within the scope of the invention also be designed multipolar.
  • the main contact system may accordingly have a plurality of fixed contacts and moving contacts provided for simultaneously closing or disconnecting the current paths.
  • the electromagnetic drive unit is a bipolar magnet system whose magnetic circuit comprises both one or more permanent magnets and magnet coils.
  • the drive unit has a movable armature and a first fixed magnetic coil and a second stationary magnetic coil.
  • the armature can be reversibly moved between two anchor layers, wherein the armature is stabilized in each of the two anchor positions by the one or more permanent magnets of the bipolar magnet system.
  • the drive unit is a bistable magnet system.
  • the coupling member serves to transmit a control force from the drive unit to the moving contact.
  • the coupling member is for this purpose movable between an operating position and a release position, wherein the operating position of the coupling member corresponds to the closed position of the moving contact, and the release position of the coupling member with the open position of the moving contact.
  • the coupling member is in the closed (applied to the fixed contact) moving contact regularly in its operating position and open (lifted from the fixed contact) moving contact in the release position.
  • the coupling member is connected in an expedient embodiment of the invention, in particular fixed to the armature of the drive system and linearly displaceable together with this between the operating position and the release position.
  • the coupling member is designed in particular as a plunger.
  • the main contact system, the drive unit and the coupling element are in operative relationship such that the moving contact is de-energized (ie at least substantially de-energized) magnetic coils - in spite of the bistable ones Design of the drive unit - monostable held in the open position.
  • the moving contact also returns from any other contact position back to the open position, if and as long as the solenoid coils are de-energized.
  • the switching device is further designed such that by selective excitation of the first magnetic coil, the moving contact is movable into the closed position.
  • the current path is closed as intended by the fact that the first magnetic coil is energized (ie, energized), while the second magnetic coil is de-energized or left in a de-energized state.
  • This switching function corresponds essentially to the functioning of a contactor.
  • the first magnetic coil used to close the main contact system is therefore also referred to below as a "contactor coil".
  • the second magnetic coil serves to rapidly shut down the switching device in the event of a short circuit in the current path.
  • the switching device is designed such that by selective energization (ie energization) of the second solenoid, the moving contact within a permissible for a short circuit in the current path Maximalausschaltzeit in the open position is movable, so that the current flow is interrupted in the current path.
  • the said maximum switch-off time is in particular 5 ms.
  • the second solenoid coil used for the quick shutdown is also referred to below as the "short-circuit release coil".
  • the switching device in a preferred embodiment additionally comprises at least one contact spring which biases the moving contact in the direction of one of its two switching positions.
  • the moving contact can be biased by the contact spring either in the manner of a circuit breaker by the contact springs in the direction of its closed position or in the manner of a Contactor be biased towards the open position.
  • the switching device preferably has at least one return spring, which biases the coupling member in the direction of the release position.
  • the monostable bearing of the moving contact is achieved in particular by the interaction of the contact spring (s), return spring (s) and the drive unit to the moving contact forces exerted.
  • the switching device has the particular advantage that both the operational switching and the overload shutdown and the quick shutdown occurs in the event of a short circuit by means of a single electromagnetic drive, which allows a compact, lightweight and efficient production of the switching device.
  • Another advantage of the switching device is that it goes in case of failure by itself in the off state, from which it can be switched on again electrically without further action. In particular, no manual reset operations are required after a quick circuit in the event of a short circuit.
  • the high switching speed, which is required for the rapid shutdown in the event of a short circuit is largely supported by the fact that the switching device automatically strives for this in the off state due to the monostability of the open position.
  • the high shutdown speed is also supported by the optionally existing return spring (s) and optionally by the optional contact spring (s).
  • the switching device is preferably an electronic switching device, i. to a switching device with an electronic control and electronic power monitoring, in particular an electronic trigger detection in case of overload and short circuit. Accordingly, the switching device comprises an electronic control circuit for controlling the first magnetic coil and / or the second magnetic coil.
  • the control circuit is preferably adapted to teilzuerregen after closing the switching device, the first solenoid coil by a clocked holding current (ie to comparatively low level to excite), so that the moving contact - especially just safe - is held in the closed position.
  • the clocked partial excitation takes the control circuit in this case in particular by a pulse width modulation of the voltage applied to the contactor coil operating voltage.
  • control circuit is preferably configured to further reduce the turn-off time in the event of a short circuit by means of circuitry measures.
  • the control circuit comprises in a preferred embodiment, a de-energizing circuit which ensures in case of a short circuit in the current path an accelerated de-energizing - to be switched off in this case - contactor coil.
  • the excitation circuit comprises in a simple and effective embodiment, in particular as a substantial part of a Zener diode and a freewheeling diode connected in series thereto, over which the contactor coil is bridged after switching off.
  • control circuit preferably comprises an electrical energy store, in particular a capacitor, via which the short-circuit release coil can be excited quickly and effectively in the event of a short circuit in the current path.
  • the energy storage device is in turn charged in normal operation of the switching device, so that its performance in case of short circuit is available immediately and in full.
  • the short-circuit release coil is used exclusively for the rapid shutdown in the event of a short circuit, but not for the operational shutdown of the current path or the overload shutdown.
  • the contactor coil is deenergized (turned off) by the control circuit while leaving the short-circuit release coil deenergized.
  • the moving contact in this case returns automatically, possibly supported by the return spring (s) and / or the contact spring (s) in the monostable open position.
  • the coupling element in its operating position is preferably in a state decoupled from the moving contact.
  • the coupling member is arranged in its operating position with a certain distance to the moving contact and the associated parts.
  • At least one of the two magnetic coils is expediently also in a de-energized state not completely energized. Rather, the contactor coil and / or the short-circuit release coil are also applied in a de-energized state with a low quiescent current.
  • the monitoring of the quiescent current which is chosen so low that it does not significantly affect the force relationships in the drive kinematics, allows a conclusion on the functionality of the solenoid coils. In particular, a possible line break in one of the magnetic coils is detected early on the basis of the quiescent current, which likewise collapses in this case, by the control circuit.
  • the permanent magnets of the bipolar magnetic drive system are preferably arranged stationarily on a yoke of the magnet system. In principle, however, they could also be mounted on the movable armature within the scope of the invention.
  • the coupling member can also be constructed as a rotary system in order to obtain further advantages in terms of friction and dynamics.
  • the optionally existing contact spring can also be connected to the coupling member via a running counter-bearing to reduce the total force level of the drive.
  • the 1 and 2 show roughly schematically simplified a first embodiment of a switching device 1, which is a so-called compact branch for supplying an electric motor with a supply current.
  • the switching device 1 allows in a single device both the operational switching on and off under normal load as well as an overload shutdown and an emergency shutdown in the event of a short circuit.
  • the switching device 1 comprises a main contact system 2, a drive unit 3 and a coupling member 4.
  • the fixed contact 11 is in this case attached to the end of a power supply busbar 15, while the fixed contact 12 at the end of a Stromabnature busbar 16 is attached.
  • the two moving contacts 13 and 14 are mounted in juxtaposition to each other at the ends of a switching bridge 17.
  • the switching bridge 17 is acted upon by means of a contact spring 18 in the direction of the busbars 15 and 16, so that the moving contacts 13 and 14 are each biased in the direction of their closed position.
  • the drive unit 3 is formed by a bipolar magnet system. It comprises a circumferential yoke 20 in which two magnetic coils are accommodated.
  • the remote from the main contact system 2 magnetic coil is hereinafter referred to as (contactor) coil 21.
  • the magnetic coil facing the main contact system 2 is referred to as a (short-circuit release) coil 22.
  • a plurality of permanent magnets 23 are arranged between the two aligned in series coils 21 and 22 .
  • the yoke 20 has a respective acting as a pole piece 24 projection with which the yoke 20 protrudes slightly into the interior of the respective adjacent coil 21 and 22 respectively.
  • a cylindrical armature 25 is received in soft iron.
  • the armature 25 has a space between the pole pieces 24 substantially undershooting length and is thus parallel to the axis of the coils 21 and 22 reversibly displaceable between two anchor positions.
  • the anchor 25 emerges primarily in the contactor coil 21 and is located on the front side of the remote from the main contact system 2 pole piece 24 of the yoke 20 at.
  • other anchor position of the anchor 25 dives against it decisively in the short-circuit release coil 22 and is the end face of the main contact system 2 facing pole piece of the yoke 20 at.
  • the drive unit 3 is a bistable magnet system in itself, in which the armature 25 as a result of the magnetic flux generated by the permanent magnet 23 in its two anchor layers according to FIG. 1 and according to FIG. 2 is stabilized as long as the coils 21 and 22 are de-energized, that is, are substantially de-energized.
  • the armature 25 is replaced by a return spring 26 in the main contact system 2 facing armature position (according FIG. 2 ).
  • the coupling member 4 serves to transmit a control force from the drive unit 3 to the switching bridge 17, and thus to the movement of the moving contacts 13 and 14 between the closed position and the open position.
  • the coupling member 4 here consists of a plunger 28 which is fixedly connected to the armature 25 and thus moved with this.
  • the operating position of the plunger 28
  • the plunger 28 is retracted together with the armature 25 relative to the main contact system 2, so that the free end of the plunger 30 is arranged at a distance from the switching bridge 17.
  • the moving contacts 13 and 14 are thereby moved under the action of the pressing on the switching bridge 17 contact spring 18 in its closed position.
  • the plunger 28 is advanced together with the armature 25 in a "release position" against the switching bridge 17, so that the plunger 28 lifts the moving contacts 13 and 14 of the respectively associated fixed contacts 11 and 12.
  • the contact spring 18 and the return spring 26 are dimensioned and arranged with additional consideration of the forces generated by the permanent magnet 23 such that the plunger 28 together with the armature 25 in de-energized coils 21 and 22 always in FIG. 2 shown triggering position occupies.
  • This position is monostable in the sense that the plunger 28 moves automatically from any other position in the release position, as long as the coils 21 and 22 are de-energized.
  • the moving contacts 13 and 14 are always in their de-energized coils 21 and 22 in their - also monostable - open position.
  • the contactor coil 21 is acted upon by an operating voltage and thus excited.
  • the armature 25 is overcome by overcoming the forces exerted by the return spring 26 and the permanent magnet 23 forces in the armature position FIG. 1 deflected.
  • the plunger 28 is taken with the armature 25 in its operating position. Under the retraction of the plunger 28, in turn, the moving contacts 13 and 14 are moved under the action of the contact spring 18 in its closed position.
  • the contactor coil 21 is constantly energized only to attract the armature 25 for a predetermined period of time (tightening time). Rather, the contactor coil 21 is only partially energized in a holding phase after the closing time by the contactor coil 21 is subjected to a pulse width modulated, and thus temporally clocked voltage.
  • the pulse width ratio of this clocked holding voltage is such chosen that the anchor 25 just barely in the in FIG. 1 represented anchor position is held.
  • the contactor coil 21 is de-energized by switching off the holding voltage.
  • the armature 25 and the plunger 28 are here under the action of the return spring 26 in the release position according to FIG. 2 pressed, whereby the moving contacts 13 and 14 are moved back into its open position.
  • the contactor coil 21 is simultaneously deenergized and the short-circuit release coil 22 is energized.
  • the plunger 28 is moved particularly rapidly into its release position for rapid shutdown of the switching device 1.
  • the switching device 1 is in this case designed such that it can be switched off within 5 ms in the event of a short circuit.
  • FIG. 3 shows an electronic control circuit 30 of the switching device 1.
  • This control circuit 30 includes a first circuit portion 31 for controlling the contactor coil 21, a second circuit portion 32 for controlling the short-circuit release coil 22 and a common control unit 33rd
  • the circuit part 31 is essentially formed by a voltage source 34 and a semiconductor switch 35, which are connected in series with the contactor coil 21.
  • An in FIG. 3 Registered resistor 36 illustrates in the manner of an equivalent circuit diagram, the ohmic resistance of the contactor coil 21.
  • a de-energizing circuit 37 is connected, which consists of a (in the reverse direction in the potential difference generated by the voltage source 34 connected) freewheeling diode 38 and an antiparallel connected thereto Zener diode 39 is formed.
  • the circuit part 32 also comprises a voltage source 40 and a semiconductor switch 41, which are connected together with a charging resistor 42 in series with the short-circuit release coil 22.
  • An in FIG. 3 Registered resistor 43 again illustrates in the manner of an equivalent circuit diagram the ohmic resistance of the short-circuit release coil 22.
  • the circuit part 32 further comprises, as an electronic energy store, a capacitor 44, which is connected in parallel with the voltage source 40 and the charging resistor 42.
  • the semiconductor switches 35 and 41 are driven by the control unit 33, which is formed in particular by a microcontroller with a control software implemented therein.
  • the control unit 30 To energize or de-excite the contactor coil 21 of the semiconductor switch 35 is controlled by the control unit 30 (closed or electrically switched) or controlled (open or locked). In the hold phase, the semiconductor switch 35 is clocked up and closed by the control unit 33 with the preset pulse width ratio.
  • the capacitor 44 in the circuit part 32 with open semiconductor switch 41 via charged the charging resistor 42 In the case of a short circuit, the semiconductor switch 41 is closed by the control unit 33, so that the capacitor 44 is discharged via the short-circuit release coil 22. Due to the electrical energy stored in the capacitor 44, the coil 22 is energized much faster than would be possible by direct connection of the voltage source 40.
  • both coils are energized in the de-energized state by the control circuit 30 with a low voltage, under the effect of which a low quiescent current always flows through the coils.
  • the control unit 33 continuously monitors these quiescent currents and, in the event of a breakdown of the quiescent current-for example, as a result of a power failure in one of the coils 21 and 22-causes the disconnection of the switching device.
  • a second embodiment of the switching device 1 is in the 4 and 5 shown in the closed position or open position of the main contact system 2.
  • This embodiment of the switching device 1 differs from the embodiment according to 1 and 2 in that the switching bridge 17 is mounted directly on the plunger 28 via the contact spring 18.
  • the coupling member 4 includes for this purpose as with the plunger 28 entraining Abutment for the contact spring 18, a bearing plate 50, the ELId character on the - here by the switching bridge 17 projecting plunger - 28 is mounted.
  • FIG. 6 Furthermore, an alternative embodiment of the main contact system 2 is shown. This differs from the above embodiments in that the switching bridge 17 is not linearly displaceable, but about an axis 60 between the (in FIG. 6 shown by solid lines) closed position and the (in FIG. 6 indicated by dashed lines) opening position of the moving contacts 13 and 14 is pivotable.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Relay Circuits (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (9)

  1. Appareil (1) de coupure
    - comprenant un système (2) de contact principal, qui a au moins un contact (11, 12) fixe et au moins un contact (13, 14) mobile associé, le contact (13, 14) mobile pouvant être déplacé par rapport au contact (11, 12) fixe réversiblement pour fermer et couper un trajet (10) de courant entre deux positions de commutation, à savoir une position de fermeture et une position d'ouverture,
    - comprenant une unité (3) d'entraînement électromagnétique bipolaire, qui a une armature (25) mobile, ainsi qu'une première bobine (21) d'électroaimant à poste fixe et une deuxième bobine (22) d'électroaimant pour déplacer réversiblement l'armature (25) entre deux positions d'armatures stabilisées par magnétisme permanent et
    - comprenant un élément (4) de couplage pour transmettre une force de réglage de l'unité (3) de transmission au contact (13, 14) mobile, l'élément (4) de couplage étant mobile entre une position de fonctionnement correspondant à la position de fermeture du contact (13, 14) mobile et une position de déclenchement correspondant à la position d'ouverture du contact (13, 14) mobile,
    - dans lequel, par excitation sélective de la première bobine (5) d'électroaimant, le contact (13, 14) mobile peut être mis dans la position de fermeture et, par excitation sélective de la première bobine (22) d'électroaimant, le contact (13, 14) mobile peut être mis dans la position d'ouverture dans un temps de coupure minimum admissible pour un court-circuit dans le trajet (10) de courant,
    caractérisé
    en ce que, si les bobines (21, 22) d'électroaimant sont excitées, le contact (13, 14) mobile est maintenu de manière monostable dans la position d'ouverture
    et en ce que
    - l'appareil (1) de coupure comprend au moins un ressort (26) de compression de poussée, qui précontraint l'élément (4) de couplage en direction de la position de déclenchement.
  2. Appareil (1) de coupure suivant la revendication 1, comprenant au moins un ressort (18) de contact, qui précontraint le contact (13, 14) mobile en direction de ses deux positions de commutation.
  3. Appareil (1) de coupure suivant l'une des revendications 1 à 2, comprenant un montage (30) électronique de commande pour exciter la première bobine (21) d'électroaimant et/ou la deuxième bobine (22) d'électroaimant.
  4. Appareil (1) de coupure suivant la revendication 3,
    dans lequel le montage (30) de commande est conçu pour exciter partiellement la première bobine (21) d'électroaimant par un courant de maintien cadencé, de manière à maintenir le contact (13, 14) mobile dans la position de fermeture.
  5. Appareil (1) de coupure suivant la revendication 3 ou 4,
    dans lequel le montage (30) de commande a un circuit (37) de désexcitation pour la désexcitation accélérée de la première bobine (21) d'électroaimant s'il y a un court-circuit dans le trajet (10) de courant.
  6. Appareil (1) de coupure suivant l'une des revendications 3 à 5,
    dans lequel le montage (30) de commande a un accumulateur (44) d'énergie électrique, notamment un condensateur pour l'excitation de la deuxième bobine (22) d'électroaimant s'il y a un court-circuit dans le trajet (10) de courant.
  7. Appareil (1) de coupure suivant les revendications 3 et 6,
    dans lequel le montage (30) de commande est conçu pour interrompre, d'une manière conforme au fonctionnement, le trajet (10) du courant, s'il y a une charge normale ou s'il y a une surcharge dans le trajet (10) du courant, pour désexciter les deux bobines (21, 22) d'électroaimant ou les charger à l'état désexciter.
  8. Appareil (1) de coupure suivant l'une des revendications 1 à 7,
    dans lequel l'élément (4) de couplage est, dans sa position de fonctionnement, découplé du contact (13, 14) mobile et dans lequel l'élément (4) de couplage peut, par l'unité (3) d'entraînement, être accéléré en direction de sa position de déclenchement s'il y a un court-circuit dans le trajet (10) du courant de manière à, par une impulsion différente de zéro, pousser directement ou indirectement le contact (13, 14) mobile.
  9. Appareil (1) de coupure suivant l'une des revendications 1 à 8,
    dans lequel la première bobine (21) d'électroaimant et/ou la deuxième bobine (22) d'électroaimant sont, dans un état désexcité, alimentées par un courant de repos peu intense.
EP12750346.4A 2012-08-06 2012-08-06 Contacteur avec verrou de commutation électromagnétique Active EP2864995B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/065344 WO2014023326A1 (fr) 2012-08-06 2012-08-06 Contacteur avec verrou de commutation électromagnétique

Publications (2)

Publication Number Publication Date
EP2864995A1 EP2864995A1 (fr) 2015-04-29
EP2864995B1 true EP2864995B1 (fr) 2016-07-27

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WO (1) WO2014023326A1 (fr)

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DE102014117491A1 (de) 2014-11-28 2016-06-02 Eaton Electrical Ip Gmbh & Co. Kg Schaltgerät mit einem Antrieb zum betriebsmäßigen Schalten und mit einem Schnellauslöser zum Trennen eines Strompfads in dem Schaltgerät
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