EP1347479B1 - Superschnelles strombegrenzendes elektrisches Schaltgerät - Google Patents

Superschnelles strombegrenzendes elektrisches Schaltgerät Download PDF

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Publication number
EP1347479B1
EP1347479B1 EP03354022A EP03354022A EP1347479B1 EP 1347479 B1 EP1347479 B1 EP 1347479B1 EP 03354022 A EP03354022 A EP 03354022A EP 03354022 A EP03354022 A EP 03354022A EP 1347479 B1 EP1347479 B1 EP 1347479B1
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EP
European Patent Office
Prior art keywords
contact
cage
electric
closed position
switchgear apparatus
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.)
Expired - Lifetime
Application number
EP03354022A
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English (en)
French (fr)
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EP1347479A1 (de
Inventor
Pierre Baginski
Grégoire Brun
Jean-Paul Ferrand
Jacques Joubert
Christian Pellegrin
Richard Vacher
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP1347479A1 publication Critical patent/EP1347479A1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/222—Power arrangements internal to the switch for operating the driving mechanism using electrodynamic repulsion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3015—Charging means using cam devices
    • 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
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • 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
    • H01H71/2418—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism

Definitions

  • the invention relates to an ultrafast electrical switchgear device acting as a limiting circuit breaker.
  • a limiter circuit breaker with quick opening control of the Thomson effect contacts each pole of which is provided with a moving element having a movable main bridge forming a main circuit with a pair of fixed main contacts connected to supply pads current, and a movable arc contact bridge forming with a pair of fixed arc contacts an arc circuit connected in parallel on the main circuit.
  • a Thomson effect thruster is used to drive the moving equipment, for the opening of the main circuit and the arc circuit.
  • a locking device keeps the moving element in the open position against the biasing of return springs tending to bring the movable equipment in the closed position.
  • a second Thomson effect thruster is used to unlock the locking device.
  • circuit breakers whose opening is obtained by a spring mechanism, and having a very short response time when triggering on default.
  • the opening pawl comprises disengageable actuating means causing the latch to self-unlock in the presence of a short-circuit current exceeding a calibration threshold defined by a spring, said self-unlocking being controlled from a mechanical reaction generated by the electrodynamic compensation effect, and causing a high-speed rotation of the lock to unlock the opening pawl before the intervention of the trigger member.
  • the invention therefore aims to overcome the drawbacks of the state of the art, so as to provide an ultra-fast, extremely reliable, relatively compact, low-cost, high-speed limiter circuit breaker which allows a separation of the contacts and a limiting effect without wait until the intensity of the current has exceeded a limitation threshold.
  • the subject of the invention is an electrical switchgear according to claim 1.
  • a drive mechanism independent of the actuator firstly makes it possible to limit the number of maneuvers to be performed by the fast actuator since some of the openings may be made by actuating the mechanism lock.
  • the actuator only has to provide the energy required to move the second contact to the separation position.
  • the mechanism drives the contact door to the open position which has the effect of further moving the movable contact of the first contact. In other words, part of the stroke of the movable contact relative to the fixed contact is provided by the opening spring of the mechanism.
  • the dimensioning of the actuator and associated electronics is greatly simplified.
  • the redundancy of the opening functions also allows degraded operation when the power supply or the power electronics associated with the ultra-fast actuator, or even the actuator itself, are faulty.
  • the circuit breaker behaves like a conventional limiter circuit breaker.
  • the overall reliability of the shutdown function of the device is improved.
  • the apparatus further comprises a contact pressure spring recalling the second contact towards the contact position, when the second contact is close to the contact position.
  • the contact pressure spring bears on the mobile cage.
  • the contact pressure spring is supported on a support of the apparatus, the second contact being connected to the cage by a kinematic connection.
  • the drive mechanism comprises closing means for bringing the drive mechanism from the open position to the closed position, the transmission kinematic chain driving the cage from the open position to the closed position when the mechanism drive moves from the open position to the closed position.
  • the closing means comprise a closing spring which discharges to bring the mechanism from the open position to the closed position.
  • the accumulation spring is then called opening spring, to distinguish it from the closing spring.
  • the apparatus may be of the type in which the energy required to charge the opening spring is first stored in the closing spring, the discharge of the closing spring for arming the opening spring. Alternatively, it may be of the type where the energy required to arm the closing spring is first stored in the opening spring, the discharge of the opening spring for arming the closing spring. According to another embodiment, the same spring can ensure closing and opening on default.
  • the apparatus further comprises means for retaining the second contact in a retention position located between the contact position and the separation position, as long as the cage is in the closed position.
  • retention means make it possible to maintain the retention position while waiting for the mechanism to open by the accumulation spring.
  • the retention means includes a non-return lock movable between a neutral position and a non-return position and passing from the neutral position to the non-return position when the second contact passes from the contact position to the separation position, the nonreturn lock in the non-return position locking the second contact in a locking position close to the separation position as long as the cage is in the closed position.
  • a positive locking of the second contact is thus obtained, which results in an effective catch even in the case where the second contact, propelled by the actuator, undergoes a rebound when arriving at its separation position.
  • Such a device has the disadvantage of being less reliable in case of violent rebound of the second contact in the separation position. It is therefore useful to provide end stop for the second contact, which is able to absorb the kinetic energy of the second contact.
  • the chamber and the electromagnetic propulsion means of the arc are sized such that the arc is extinguished even before the drive mechanism has been able to move the cage.
  • the projection of the arc towards the chamber is obtained in particular by giving a suitable shape to the conductors connecting the contacts to the connection pads, for example a form of current loop. It is also possible to introduce a U-shaped magnetic circuit surrounding the contact zone, to produce a strong electromagnetic field in the zone where the electric arc arises during the separation of the contacts.
  • the apparatus further comprises a power supply device for supplying the electromechanical actuator and delivering the electrical energy necessary to move the moving equipment from the rest position to the active position.
  • the power supply device comprises a means for storing electrical energy. In practice, it is one or more power capacitors that allow the accumulation of electrical energy and its almost instantaneous restitution for the supply of the actuator.
  • the power supply device is connected to an electrical source independent of the electric power circuit. However, it is also conceivable to provide a control whose electrical source is the electrical power circuit in which are the contacts of the equipment.
  • the measuring means consist of Rogowsky tori.
  • the electromechanical actuator is constituted by a Thomson effect thruster.
  • any other ultrafast electromechanical thruster is conceivable.
  • a casing 10 made of insulating material of a low-voltage power-limiting circuit-breaker encloses in its front part a drive mechanism 12 for driving a pivoting switching bar 14 which transmits to poles 16 of the apparatus, situated in in the posterior part, the movements of the mechanism 12.
  • the drive mechanism 12 is carried by a not shown frame, fixed relative to the housing 10, and comprises a toggle device having a pair of transmission rods 20, 22, articulated to each other by an axis of pivoting 24.
  • the upper link 22 is mechanically coupled to the switching bar 14 by an axis 25.
  • the lower link 20 is articulated via an axis 26 to a hook 27 pivoting about a fixed axis of rotation 28.
  • An opening latch 30 locks the hook 28 in an armed position by means of a reduction lever 32.
  • the opening latch 30 is actuated by means of an electromagnetic relay 34.
  • An opening spring 36 is stretched between the axis 25 and a cleat fixed to the frame.
  • the mechanism is completed by a subset of arming and closing comprising a transmission lever 40 provided with an axis 42 cooperating with the toggle device, a roller following the curve of an arming cam 44 and an axis 46 anchoring the end of a closing spring 48.
  • the accumulation subassembly is completed by a locking latch 50 blocking the transmission lever 40 via a hook of gearing 52.
  • the rotation of the cocking cam 44 to its locking position makes it possible to pivot the transmission lever 40 from a disarmed position to an armed position and to load the closing spring 48, without interfere with the opening mechanism.
  • the transmission lever 40 In the armed position, the transmission lever 40 is locked by the closing latch 50. Unlocking the lever 40 allows the closing spring 48 to drive the lever 40 from the armed position to the disarmed position, the transmission axis 42 then driving the toggle device into the closed position and loading the opening spring.
  • the switching bar 14 is common to all the poles 16 which may be for example three, four or six, although other configurations are possible, and is constituted by a shaft supported by bearings of the housing for pivot about a fixed geometric axis between an open position and a closed position.
  • a connecting rod 54 which connects a crank 56 of the bar to a movable cage 58 of insulating material.
  • the cage 58 pivots around a geometric axis 60 fixed relative to the frame.
  • One or more movable contact fingers 62 are pivotally mounted about the same axis 60, and connected by a braid 64 to a connection pad 66.
  • the movable contact fingers 62 carry contact pads 68 which, in the position of the figure 1 , come into contact with fixed contact pads 70 arranged on another connection pad 72.
  • Telescopic rods 74 serve to guide contact pressure springs 76 arranged between the cage 58 and the fingers 62.
  • the contact pressure springs 76 are, in the example considered, compression springs, which tend to rotate the contact fingers 62 relative to the cage 58 in the opposite direction of clockwise in the figures, so as to recall the contacts 68 of the fingers 62 to the fixed contact 70.
  • the cage 58 carries an elastomeric limit stop 78 limiting the pivotal movement of the contact fingers 62.
  • a retractable lateral latch 80 is articulated about an axis 82 passing through the fingers and supported by them.
  • a stop 84 is disposed on the bottom of the housing, facing the latch 80.
  • a spring blade 86 is attached to one end of the latch 80, in front of a nose 88 projecting from the cage.
  • An arc extinction chamber 90 opens out facing the contacts, its mouth being delimited by a spark arrester 92 and an arc horn 94 electrically connected to the connection pad and to the fixed contact 70.
  • the chamber contains fins metal cooling 96 and opens on the outside by a bottom grid 98 opposite the contacts 68, 70.
  • a thruster Thomson 100 effect is disposed in the base of the housing, facing the contact fingers 62.
  • the thruster consists of a disc 102 disposed facing a winding 104 and secured to a head of Percussion 106.
  • a rod 108 is fixed to the head 106 and guided in a fixed cylinder 110.
  • a return spring 112 tends to bring the head 106 back to the winding.
  • the head 106 constitutes a hammer 114 intended to strike the contact fingers 62.
  • a Rogowsky torus 120 surrounds the connection pad 66 and is used to measure the current flowing through the pole 16. As shown in FIG. figure 4 the cores 120 of the three poles deliver a signal to a control unit 121 comprising a first electronic trigger module 122 and a second electronic trigger module 124.
  • the first electronic module 122 controls in a very conventional manner the electromechanical relay 34 driving the latch
  • the second electronic module 124 controls both the electromechanical relay 34 and a power electronics module 130 serving for the Thomson 100 thruster power supply.
  • the line 125 connecting the second electronic module 124 Relay 34 is optional, and may be omitted where appropriate, hence its dashed representation.
  • the second electronic module controls the electromagnetic relay 34 in case of ultrafast opening, through the module 122.
  • the second module is able to determine if the signal delivered by the toroids 120 is characteristic of a fault requiring an ultrafast opening of the circuit breaker.
  • the means for making this decision are well known to those skilled in the art, and described for example in the document DE 36 42 136 as well as in the French patent application bearing the registration number 01 15 785.
  • the power electronics module is provided with a battery of power capacitors for storing electrical energy necessary for the activation of the thruster 100.
  • the module 130 is powered by a power supply 134.
  • the torus 120 delivers a signal such that only the first electronic module 122 sends a signal to the electromechanical relay 34 which unlocks the opening latch 30
  • the opening spring 36 then drives the switching bar 14 towards the open position represented on the figure 2 . This movement is transmitted to the cages 58 of the different poles 16 by the rods 54.
  • the contact fingers 62 urged by the contact pressure springs 76, follow the opening movement.
  • the contact fingers 62 have rotated clockwise, causing an electric arc upon separation of the contacts 68, 70 and thus a current limitation, even before the mechanism 12 has driven the stands 58 to the open position. Due to this pivoting of the fingers 62 before the cage 58 is set in motion, the spring blade 86 meets the nose 88 of the cage and pivots the latch 80 with respect to the fingers 62 so that the latch 80 comes into play. between the fingers 62 and the stop 84.
  • the fingers 62 initiate a movement in the opposite direction of the clockwise but are immediately blocked in the position represented on the figure 3 since the latch 80 has come into contact with the abutment 84 and prevents the contact fingers 62 from falling off.
  • the latch is deactivated by the opening of the apparatus which causes the cage 58 to pivot, so that the nose 88 away from the spring blade 86.
  • the return to the retracted position of the latch 80 is by simple gravity or with the aid of a torsion spring not shown in the figures, recalling the latch 80 in the opposite direction of clockwise.
  • the circuit breaker behaves like a conventional latching limiter circuit breaker.
  • the second electronic trigger module 124 whose response time is much shorter than that of the first trigger module 122, takes precedence. It controls firstly the power electronics 130 and secondly, simultaneously or timed, as required, the electromagnetic relay 34. The power electronics 130 then instantly releases into the Thomson effect thruster 100 l electrical energy stored in the capacitors 132. In less than a millisecond, the hammer 114 of the thruster head collides with the contact fingers 62 and projects the fingers that pivot in clockwise about the axis 60, the cage 58 remaining stationary.
  • the fingers 62 abut against the stop 78 of the cage while the latch 80 pivots and is put in place.
  • the latch 80 locks them as shown on the figure 3 .
  • an electric arc is drawn between the contacts.
  • the shape of the copperwork forming the electrical circuit between the connecting pads 66, 72 has on the arc a loop effect which projects the arc towards the chamber.
  • the arc switches on the spark arrester 92 and on the arc horn 94, which facilitates its entry into the extinguishing chamber 90 while leaving the contacts 68, 70.
  • the Arc cools down, so that its electrical voltage increases to extinction.
  • the mechanism 12 confirms the opening by driving the cage 58 into the open position of the figure 2 .
  • the sequence of the opening sequence has the same steps as in the case of an electrodynamic repulsion, but its progress is much faster. In fact, there is less than three milliseconds between the current zero and the activation of the Thomson effect thruster, so that the intensity of the arc current is very low and the arc is easy to cut. If we were to rely on the electromagnetic repulsion effect between the contacts, it would be necessary to wait for the intensity of the current to have exceeded an already high limitation threshold, and the separation of the contacts would give rise to a very energetic arc. from the beginning.
  • the Rogowsky toroids deliver their signal to an electronic control unit 121 which includes a module 152 for detecting defects and discrimination between defects requiring activation of the actuator 100 and a defect requiring only the opening of the mechanism. According to the decision taken, the detection module 152 informs a control module 154 which sends the relay 34 and / or the power electronics module 130 the appropriate control signals.
  • circuit breaker shown is not limiting and the invention would also be applicable to unipolar apparatus.
  • the contact pressure springs may be arranged between the movable contact fingers and an element integral with the housing, as described for example in the document US 4,841,266 . It may also be provided to perform the anti-return function of the wedge using the contact pressure springs forming a bistable system between the cage and the contact fingers, as described for example in the same document US 4,841,266 . Thus, when the contact fingers are close to the contact position, the return springs provide the contact pressure whereas when the fingers are in the separation position, the springs tend to hold them there.
  • the contact pressure springs 76 may be calibrated in such a way that the contact fingers 62 are never raised by the effect of electromagnetic repulsion, before one of the triggering devices causes the separation of the contacts, by opening the mechanism 12 or by activation of the thruster 100. This gives a device with high electrodynamic resistance, ensuring a very strong limitation of extremely high currents through the thruster 100.
  • retractable lateral stops flanking the cage if the width of the cage, in a direction perpendicular to the plane of the figures, makes it necessary.
  • the retractable stop can be attached to the bottom of the housing. It can also be placed between the cage and the fingers.
  • the Thomson thruster or other high-speed actuator may be positioned on the cage to rotate the fingers.
  • the detection of electrical faults is not necessarily limited to the detection of short circuits and overload currents.
  • the opening latch can also be controlled by means of detection of lack of voltage, which will act either on electromechanical relays separate from the relay 36, or on the relay 36 itself.
  • the mechanism described in the exemplary embodiment is a mechanism of the type allowing a cycle opening, closing, opening, with a separate opening spring and closing spring.
  • the invention is applicable to any other type of conventional mechanism for circuit breaker, wherein the energy required for opening is stored in an accumulation spring. It is particularly applicable to circuit breaker whose mechanism comprises a single spring ensuring both opening on fault and closing the apparatus.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (12)

  1. Elektrisches Schaltgerät mit
    - einem ersten Kontakt (70), der über eine erste Anschlussklemme (72) mit einem elektrischen Leistungsstromkreis verbunden ist,
    - einem zwischen einer geschlossenen Stellung und einer geöffneten Stellung verschwenkbaren Käfig (58),
    - einem zweiten Kontakt (68), der über eine zweite Anschlussklemme (66) mit dem elektrischen Leistungsstromkreis verbunden ist, welcher zweite Kontakt (68) in Bezug zum Käfig (58) beweglich ist und zwischen einer Kontaktstellung und einer Trennstellung verschoben werden kann, wobei zwischen dem zweiten Kontakt (68) und dem ersten Kontakt (70) Kontakt besteht, wenn sich der Käfig (58) in der geschlossenen Stellung und der zweite Kontakt (70) in der Kontaktstellung befinden,
    - sowie einem Antriebsmechanismus (12) des Schaltgeräts, der zwischen einer Ausschaltstellung und einer Einschaltstellung bewegt werden kann, und der
    - eine Kraftspeicherfeder (36), die in der Einschaltstellung des Antriebsmechanismus' (12) gespannt ist und bei ihrer Entspannung den Antriebsmechanismus von der Einschaltstellung in die Ausschaltstellung überführt,
    - eine Ausschaltsperre (30), die den Antriebsmechanismus (12) in der Ausschaltstellung blockiert,
    - ein elektromechanisches Relais (34) zur Steuerung der Ausschaltsperre (30);
    - sowie eine zwischen der Kraftspeicherfeder (36) und dem Käfig (58) angeordnete kinematische Übertragungskette umfasst, die dazu dient, beim Übergang des Antriebsmechanismus' (12) von der Einschaltstellung in die Ausschaltstellung den Käfig (58) von der geschlossenen Stellung in die geöffnete Stellung zu verbringen,
    dadurch gekennzeichnet, dass das Schaltgerät darüber hinaus
    - ein elektromechanisches Betätigungsorgan (100) mit einem zwischen einer Ruhestellung und einer Arbeitsstellung verschiebbaren beweglichen System, das bei seinem Übergang von der Ruhestellung in die Arbeitsstellung den zweiten Kontakt (68) von der Kontaktstellung in die Trennstellung überführt, wenn sich der Käfig (58) in der geschlossenen Stellung befindet,
    - eine elektrische Stromversorgung (130) zur Einspeisung des elektromechanischen Betätigungsorgans (100) und Bereitstellung der zur Überführung des beweglichen Systems von der Ruhestellung in die Arbeitsstellung erforderlichen elektrischen Energie,
    - Mittel (152) zur Erkennung elektrischer Fehler und Unterscheidung zwischen elektrischen Fehlern, die eine Schnellabschaltung erfordern, und elektrischen Fehlern, die keine Schnellabschaltung erfordern,
    - sowie Steuermittel (154) umfasst, die sowohl das elektromagnetische Relais (34) als auch die Stromversorgung (130) ansteuern, wenn die Mittel zur Fehlererkennung und -unterscheidung (152) einen elektrischen Fehler erkannt haben, der eine Schnellabschaltung erfordert, und nur das elektromechanische Relais (34) ansteuern, wenn die Mittel zur Fehlererkennung und -unterscheidung einen elektrischen Fehler erkannt haben, der keine Schnellabschaltung erfordert.
  2. Elektrisches Schaltgerät nach Anspruch 1, dadurch gekennzeichnet, dass es außerdem Rückhaltemittel (80) umfasst, die dazu dienen, den zweiten Kontakt (68) in einer zwischen der Kontaktstellung und der Trennstellung angeordneten Rückhaltestellung zu halten, solange sich der Käfig (58) in der geschlossenen Stellung befindet.
  3. Strombegrenzendes elektrisches Schaltgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass es außerdem eine Kontaktdruckfeder (76) umfasst, die den zweiten Kontakt (68) in Richtung der Kontaktstellung beaufschlagt, wenn sich der zweite Kontakt (68) in der Nähe der Kontaktstellung befindet.
  4. Strombegrenzendes elektrisches Schaltgerät nach Anspruch 3, dadurch gekennzeichnet, dass sich die Kontaktdruckfeder (76) am beweglichen Käfig (58) abstützt.
  5. Strombegrenzendes elektrisches Schaltgerät nach Anspruch 4, dadurch gekennzeichnet, dass sich die Kontaktdruckfeder (76) an einem Stützelement (10) des Schaltgeräts abstützt, wobei der zweite Kontakt (68) über eine kinematische Verbindung mit dem Käfig (58) verbunden ist.
  6. Strombegrenzendes elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Antriebsmechanismus (12) Einschaltmittel umfasst, um den Antriebsmechanismus (12) von der Ausschaltstellung in die Einschaltstellung zu überführen, wobei die kinematische Übertragungskette den Käfig (58) von der geschlossenen Stellung in die geöffnete Stellung überführt, wenn der Antriebsmechanismus (12) von der Ausschaltstellung in die Einschaltstellung übergeht.
  7. Strombegrenzendes elektrisches Schaltgerät nach Anspruch 6, dadurch gekennzeichnet, dass die Einschaltmittel eine Einschaltfeder (48) umfassen, die sich entspannt, um den Mechanismus von der Ausschaltstellung in die Einschaltstellung zu überführen.
  8. Strombegrenzendes elektrisches Schaltgerät nach Anspruch 2, dadurch gekennzeichnet, dass das Rückhaltemittel eine bewegliche Rückstellsperre (80) umfasst, die zwischen einer Nullstellung und einer Rückstell-Blockierstellung verschoben werden kann und von der Nullstellung und die Rückstell-Blockierstellung übergeht, wenn der zweite Kontakt (68) von der Kontaktstellung in die Trennstellung übergeht, wobei die Rückstellsperre (80) in der Rückstell-Blockierstellung den zweiten Kontakt (68) in einer, nahe der Trennstellung angeordneten Blockierstellung verriegelt, solange sich der Käfig (58) in der geschlossenen Stellung befindet.
  9. Strombegrenzendes elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es darüber hinaus
    - eine Lichtbogenlöschkammer (90) mit Ableitmitteln (96) zur Aufnahme der Energie eines Lichtbogens, der bei Trennung des zweiten Kontakts (68) vom ersten Kontakt (70) zwischen dem ersten Kontakt (70) und dem zweiten Kontakt (68) gezogen wird,
    - sowie Mittel umfasst, um einen zwischen dem ersten und dem zweiten Kontakt gezogenen Lichtbogen durch elektromagnetische Wirkung in Richtung der Lichtbogenlöschkammer zu führen.
  10. Strombegrenzendes elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die elektrische Stromversorgung ein Mittel (132) zur Speicherung elektrischer Energie umfasst.
  11. Strombegrenzendes elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die elektrische Stromversorgung mit einer vom elektrischen Leistungsstromkreis unabhängigen elektrischen Spannungsquelle (134) verbunden ist.
  12. Strombegrenzendes elektrisches Schaltgerät nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das elektromechanische Betätigungsorgan (100) als Schlagvorrichtung mit Thomsonspule ausgebildet ist.
EP03354022A 2002-03-22 2003-03-13 Superschnelles strombegrenzendes elektrisches Schaltgerät Expired - Lifetime EP1347479B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0203586A FR2837619B1 (fr) 2002-03-22 2002-03-22 Appareillage electrique de coupure limiteur ultrarapide
FR0203586 2002-03-22

Publications (2)

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EP1347479A1 EP1347479A1 (de) 2003-09-24
EP1347479B1 true EP1347479B1 (de) 2011-11-30

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US (1) US6777635B2 (de)
EP (1) EP1347479B1 (de)
FR (1) FR2837619B1 (de)

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US7294804B1 (en) * 2007-03-29 2007-11-13 Eaton Corporation Energy dissipating spring seat
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RU2489764C2 (ru) * 2008-12-15 2013-08-10 Общество с ограниченной ответственностью "Технос" Электромагнитный датчик тока
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FR2837619B1 (fr) 2004-06-25
FR2837619A1 (fr) 2003-09-26
EP1347479A1 (de) 2003-09-24
US6777635B2 (en) 2004-08-17
US20030179525A1 (en) 2003-09-25

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