EP0977233B1 - Leistungsschalter mit hoher elektrodynamischer Festigkeit und Ausschaltleistung - Google Patents

Leistungsschalter mit hoher elektrodynamischer Festigkeit und Ausschaltleistung Download PDF

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Publication number
EP0977233B1
EP0977233B1 EP99410088A EP99410088A EP0977233B1 EP 0977233 B1 EP0977233 B1 EP 0977233B1 EP 99410088 A EP99410088 A EP 99410088A EP 99410088 A EP99410088 A EP 99410088A EP 0977233 B1 EP0977233 B1 EP 0977233B1
Authority
EP
European Patent Office
Prior art keywords
contact
opening
fingers
threshold
circuit breaker
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
EP99410088A
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English (en)
French (fr)
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EP0977233A1 (de
Inventor
Marc Rival
Marc Blancfene
Claude Grelier
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP0977233A1 publication Critical patent/EP0977233A1/de
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Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/101—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening with increasing of contact pressure by electrodynamic forces before opening
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • H01H2071/507—Latching devices between operating and release mechanism being collapsible, e.g. yielding elastically, when the opening force is higher than a predetermined value
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/446—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using magnetisable elements associated with the contacts

Definitions

  • the invention relates to a control mechanism of a low-voltage multipole circuit breaker with high electrodynamic resistance, and comprising an electrical power circuit having, by pole, a pair of compensated contact members, maintained in the closed position by virtue of the electrodynamic compensation of the repulsion forces.
  • a mechanism of the kind mentioned is described in EP-A-222.645 of the applicant and comprises a toggle device associated with a trigger hook and an opening spring for moving the movable contact to an open position when the hook is actuated from an armed position, to a triggered position, a switching rod of insulating material coupled to the toggle device extending transversely to the frame, and comprising a rotary shaft supporting the movable contact members of all the poles, an opening pawl cooperating with the trigger hook for arming or triggering the mechanism, respectively in the locked position or in the unlocked position of said pawl, and a latching bolt controlled by a triggering member for actuating the ratchet opening to the unlocked position.
  • the electrodynamic behavior of the circuit breaker results from the action of the contact pressure springs on the multiple fingers, and compensated contact members, whose hinge axis is subjected to significant mechanical reactions.
  • the mechanism is capable of accommodating these reactions for a maximum threshold of short-circuit current. Beyond this threshold, the reactions are likely to damage certain axes or transmission members of the mechanism, and may increase the triggering force at the level comprising the hook, the opening ratchet, and the lock.
  • the intervention of the instantaneous release requires a response time of the order of 10 ms to obtain the triggering of the mechanism, which is too long, if the performance of the circuit breaker must satisfy a high electrodynamic strength, and a breaking capacity greater than 130kA.
  • 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 elastic means, said self-unlocking being controlled from a mechanical reaction generated by the electrodynamic compensation effect, and causing an ultra-fast rotation of the latch to unlock the opening pawl before the intervention of the trigger member.
  • circuit breaker obtained is very efficient in terms of electrodynamic resistance since self-unlocking is in practice calibrated for high current levels, especially greater than 180 kA peak. To obtain a sufficient breaking capacity, however, it is necessary to dimension very widely the pole and its interrupting chamber, to the detriment of overall size and price.
  • the object of the invention is therefore to provide a high electrodynamic withstand circuit breaker, with very high breaking capacity, requiring a reduced triggering force, and a short tripping time when a large short-circuit current occurs. performance to be achieved in a small and low-cost space.
  • a low-voltage circuit-breaker with high electrodynamic resistance comprising: a frame, one or more poles comprising a pair of contact members comprising a movable contact member and another contact member, movable contact member having a support cage movable relative to the frame between an open position and a closed position, and one or more movable contact fingers with respect to the support cage between a contact position with the another contact member and a withdrawal position, each pole further comprising electromagnetic compensation means able to apply electromagnetic forces on the contact finger (s) tending to keep the finger (s) in contact with the other contact member, the circuit breaker further comprising an opening spring capable of relaxing from an armed position to a disarmed position, a co-operative drivetrain with the opening spring and with the pair of contact members in such a way that the expansion of the opening spring drives the support cage into its open position, this chain comprising a kinematic connecting member with the support cage, an opening control mechanism comprising an opening latch adapted to take a locking position in
  • the pole or poles further comprise electromagnetic limitation means capable of applying electromagnetic forces on the contact finger (s) tending to drive the finger (s) towards their retracted position.
  • the electromagnetic compensation means and the electromagnetic limitation means are such that when the intensity of the current passing through the pair of contact members is below a so-called limiting threshold, the finger or fingers are kept in contact with the another contact member, and beyond said threshold, the finger or fingers are driven to their retracted position.
  • the assembly is such that the resultant of the forces applied by the cage to the kinematic connecting member when the intensity of the current flowing through the movable contact member reaches the limiting threshold is below the ultra open threshold. -fast.
  • the separation of the contacts makes it possible to limit the intensity of the short-circuit current flowing through the pole during the time required for the circuit to open by the actuating means.
  • the circuit breaker thus makes it possible to cut presumed currents much higher than previously.
  • the limiting threshold makes it possible to preserve the desired high electrodynamic strength.
  • the actuating means it is they that confirm the cut in a very short time, before the conventional trigger intervenes.
  • the actuating means comprise elastic means defining said ultrafast opening threshold.
  • the intervention of the actuating means when exceeding the ultra-fast opening threshold is not instantaneous.
  • the spring must cover a certain stroke before causing the ultra-fast opening of the opening lock.
  • the electrodynamic forces must provide a certain energy which results in the mechanical work of compression of the springs before the super-fast opening order is transmitted.
  • This delay is particularly used when the elastic means are calibrated in such a way that the ultra-fast opening takes place after the intensity of the limited current has reached its maximum value.
  • the release of the opening latch occurs after exceeding the maximum current, even though the limited current flowing through the pole has begun to decrease.
  • the forces imparted to the end stops of the opening mechanism are reduced, which increases the reliability of the device.
  • the pole or poles comprise an arc extinction chamber, and a magnetic circuit arranged to generate a magnetic field which is a function of the current flowing through the other contact member and directed so as to generate on the electric arc arising during the separation of the contact members, forces tending to project the electric arc to the arc extinguishing chamber.
  • the pole or poles comprise an arc extinction chamber, and a magnetic circuit arranged to generate a magnetic field depending on the current flowing through the other contact member and directed so as to generate on the incipient electric arc during the separation of the contact members, forces tending to project the electric arc to the arc extinguishing chamber.
  • the short-circuit current is strongly limited.
  • a mechanism 10 for controlling a multipole circuit breaker is carried by a frame 12, and comprises a toggle device 14 having a pair of transmission links 16, 18 articulated on a pivot axis 20.
  • the lower link 16 is mechanically coupled to a switching rod 22 of insulating material extending perpendicular to the flanges of the frame 12.
  • the switching bar 22 is common to all the poles, and is constituted by a shaft mounted to rotate between an open position and a closed position of the contact members of the circuit breaker.
  • the circuit breaker is of the type with high intensities, and having a high electrodynamic resistance.
  • each pole there is arranged a connecting rod 24 which connects a crank 25 of the bar 22 to an insulating cage 26 of a movable contact member 28.
  • the movable contact member 28 cooperates with a fixed contact member 30 in closing position, and is connected by a braid 32 to a first connection pad 34.
  • the fixed contact member 30 is carried directly by the second connection pad 36.
  • the pole comprises an arc extinguishing chamber 35 whose input is located near the contact members 28 and 30.
  • the cage 26 is pivotally mounted about a first axis 40 between the closed position of FIG. 1 and the open position of FIG. 3, and the movable contact member 28 comprises a plurality of parallel fingers 41. articulated on a second axis 42 of the cage 26 between a contact position visible in Figure 1 and a withdrawal position visible in Figure 2. Each finger supports a contact pad 43 cooperating with a contact pad 45 of the organ fixed contact 30 in the position of FIG. 1.
  • Contact pressure springs 38 are arranged between the cage 26 and the upper face of the fingers 41.
  • the position of the longitudinal axis of the rod 24 with respect to the axis of rotation 40 of the cage 26 on the one hand and with respect to the pivot axis of the switching rod 22 on the other hand, is characteristic of a circuit breaker of high electrodynamic resistance.
  • the large lever arm of the rod 24 relative to the axis 40 and the low lever arm of the rod 24 with respect to the axis of the switching bar 26 make it possible to ensure that the control mechanism of the rod circuit breaker is not subjected to excessive forces when large repulsive forces induced by high current are applied to the contact fingers.
  • a large part of the forces is transmitted to the support bearings of the switching bar, while the torque applied by the rod 24 to the bar 22 remains moderate, which limits the stress on the other elements of the mechanism 10 connected to the bar 22.
  • a trigger hook 44 mounted to tilt limited on a main axis 46 between an armed position, and a triggered position.
  • the main axis 46 is integral with the frame 12, and one end of the hook 44 is articulated to the upper link 18 by an axis 48, while the other opposite end cooperates with an opening pawl 50.
  • An opening spring 52 is anchored between a lug 54 of the bar 22, and a fixed lug 56 of the frame 12, said lug 56 being disposed above the toggle device 14.
  • the ratchet 50 is formed by a lever locking member 57 pivotally mounted on an axis 58, between a locked position and an unlocked position.
  • a half-moon-shaped latching latch 60 is able to move the opening pawl 50 towards the unlocked position to trigger the mechanism 10.
  • a return spring 62 of the opening pawl 50 is opposite the latching bolt 60 relative to the axis 58, and biases the opening pawl 50 counterclockwise to the locked position.
  • a roller 64 is provided on the locking lever 57 between the shaft 58 and the latching latch 60, and cooperates in the armed position with a bearing surface 66 of the trigger hook 44.
  • the bearing surface 66 of the hook 44 has a recess in which engages the cylindrical roller 64.
  • a return spring 68 is anchored between the shaft 48 and the catch 56 to bias the hook 44 counter-clockwise towards the armed position, in which the roller 64 of the opening pawl 50 is engaged in the recess of FIG. the bearing surface 66.
  • the latching latch 60 of the opening pawl 50 is controlled by a trigger member 70 to drive the locking lever 57 to the unlocked position, causing the triggering of the mechanism 10, and the opening of the contact members 28, 30
  • the triggering member 70 may be manually actuated, in particular by means of a pushbutton, or automatically, in particular by a magnetothermal or electronic trigger, or by a release trigger responsive to a remote control signal.
  • the opening pawl 50 comprises a pair of flanges 72 for supporting the shaft 58 and the roller 64 mounted to rotate freely.
  • the declutching threshold is calibrated by means of two compression springs 74, 76, arranged between a guide plate 78 integral with the flanges 72, and a retaining lever 80 articulated on the axis 58.
  • the end of the retaining lever 80 is provided with a spout 82 for catching the latch 60 in the locked position of the pawl 50.
  • a limit stop 84 is integral with the flanges 72, and is able to limit the pivoting movement of the pawl 50 in the unlocked position.
  • Each flange 72 comprises an operating ramp 86 disposed in the vicinity of the spout 82 of the retaining lever 80, the inclination of the ramp 86 being chosen to cause the latch to self-unlock 60, when the calibration threshold of the springs 74, 76 is exceeded.
  • the opening pawl 50 is arranged in a disengageable assembly allowing the latch 60 to self-unlock in the presence of a short-circuit current exceeding a predetermined threshold subsequently called the clutch threshold.
  • the contact members 28, 30 and the pads 34, 36 form a first U-shaped electrical circuit structure, the second hinge axis 42 of the fingers of the movable contact 28 being situated at one-third of the distance separating the two pads 34, 36
  • the structure 88 of such a circuit constitutes a system for compensating the electrodynamic repulsion forces capable of keeping the contact members closed in the presence of a short-circuit current.
  • the fixed contact member forms a second U-shaped circuit structure, lying in such a way that its lateral branches point away from the contact pad 34.
  • the pad 45 is supported by one of the legs of this U, on the side of its free end. In the closed position, the contact fingers 41 extend almost parallel to the tab of the U carrying the fixed contact pad 45.
  • a U-shaped magnetic plate 92 is inserted in the U formed by the fixed contact member.
  • the structure 90 of such a circuit constitutes a limiter system capable of moving the mobile contact pads 43 away from the wafer 45 of the fixed contact, in the presence of a short-circuit current exceeding a certain threshold set by the setting of the springs of contact pressure 38.
  • the bearing surface 66 of the trigger hook 44 exerts a force F on the roller 64, and biases the opening pawl 50 in a clockwise rotation around the axis 58 until the attachment of the spout 82 to the latch 60.
  • the circuit breaker is then in a stable position of closure of the contact members 30, 28.
  • the fingers are subjected to different forces shown schematically in FIG. 7. Firstly, the current flowing through the pellets 43 generates, at the level of the latter, repulsive stripping forces F S , of which the moment relative to the pivot axis 42 of the fingers 41 tends to lift them. Secondly, the second U-shaped circuit structure 90 also generates a moment tending to open the fingers 41. Indeed, the electrical charges flowing in the contact fingers 41 are subjected to electromagnetic forces due to the field induced by the charges. circulating in the U formed by the fixed contact member 30 and concentrated by the U magnetic 92.
  • the sum of the moments generated by the contact pressure springs 38 and the first U-shaped structure 88 is greater than the sum of the moments generated by the necking forces on the pellets 43 and by the second structure. 90 in U.
  • the pellets 43, 45 are kept in contact.
  • the sum of the moments generated by the contact pressure springs and by the first U-shaped structure grows less rapidly with the current than the sum of the moments generated by the necking forces and the second U- shaped structure.
  • I L of the intensity of the current flowing in the pole hereinafter referred to as the limiting threshold, beyond which the sum of the times generated by the contact pressure springs and by the first U-shaped structure becomes smaller than the sum of the moments generated by the necking forces and by the second U-shaped structure.
  • the contact fingers 41 pivot about the axis 42, to the position of Figure 2.
  • the electromagnetic field concentrated by the magnetic U in the region of the pellets organs contact then promotes the expulsion of the electric arc to the interrupting chamber, which promotes a rapid limitation of the current flowing through the pole.
  • the electromagnetic forces on the cage also continue to increase, and when the intensity of the current flowing through the pole reaches a second threshold value I C higher than first, the force F exceeds the calibration threshold of the pawl 50, which is defined by the springs 74, 76, and begins to rotate the opening pawl 50 in the clockwise direction.
  • the spout 82 of the retaining lever 80 remains in engagement with the latch 60, but the flanges 72 of the pawl 50 begin to turn around axis 58 in a clockwise direction.
  • the ramps 86 of the flanges 72 of the pawl 50 cooperate with the half moon of the latch 60, and causes its rotation in the direction F1 hourly , so as to release the retaining nose 80, causing the opening ratchet to move to the unlocked position (FIG. 6).
  • the escapement of the roller 64 also releases the trigger hook 44, which causes the opening of the contact members 30, 28 by the opening spring 52 associated with the toggle device 14.
  • the triggering of the mechanism 10 by the disengagement effect of the pawl opening 50 is ultra fast, and occurs before the intervention of the trigger member 70, which has a response time which is a function of the type of trigger magnetothermic or electronic used in the circuit breaker.
  • the presence of the latch ratchet 50 self latch 60 allows to self-protect the circuit breaker mechanically ultra-fast, while remaining compatible with the instantaneous protection of the trigger.
  • the springs 74, 76 are calibrated in such a way that the threshold I C is of the order of 110% of I L.
  • the high-speed self-locking mechanism 10 is performed for a high current level, especially greater than 100 kA.
  • the circuit breaker therefore essentially remains a selective circuit breaker of high electrodynamic resistance. Its limiting character is sensitive only from 90% of its selectivity threshold. It is this limiting character that gives it an excellent breaking power.
  • FIG. 8 shows an example of chronological progress of the opening in the presence of a short-circuit current.
  • the pole is traversed by the current I L : the contact fingers start to separate and it appears a U arc arc voltage, which increases in first approximation with the distance X separating the contact pads.
  • the contact fingers are sufficiently far apart and the arc is large enough for the magnetic U to project the arc into the chamber. From this moment, the arc voltage increases more rapidly.
  • the contact fingers continue their repulsion stroke and reach their maximum repulsion position X R of Figure 3 to t 3 .
  • the current reaches a value I c which causes the opening ratchet to move.
  • the distance between contact pads does not vary until the mechanical work necessary to compress the springs 74, 76 has been delivered.
  • the opening of the control mechanism by disengagement of the opening lock 60 takes place only at a time t 6 posterior to t 4 .
  • the arc voltage continues to grow by expansion in the interrupting chamber to the point of reaching at time t 5 , then to exceed, the voltage of the network.
  • the intensity of the limited current reached is maximum.
  • the opening of the control mechanism 10 to t 6 is therefore in a decay phase of the intensity of the current, which ensures a relatively slow opening that cleans the end stops of the moving elements of the mechanism 10.
  • the movable pellets 43 reach their position in Figure 3 at the distance X O of the fixed pellet.
  • the relative displacement between the flanges 72 and the retaining lever 80 of the opening pawl 50 is effected by a rotational movement having a small angular displacement. It is clear that this relative displacement can be obtained by a translation movement thanks to an oblong light.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Claims (5)

  1. Niederspannungs-Leistungsschalter mit hoher elektrodynamischer Festigkeit, der
    • ein Chassis (12),
    • einen oder mehrere Pole mit
    • zwei Kontaktstücken, die ein bewegliches Kontaktstück (28) und ein anderes Kontaktstück (30) umfassen, wobei das bewegliche Kontaktstück (28) einen in Bezug zum Chassis (12) zwischen einer Ausschaltstellung und einer Einschaltstellung bewegbaren Träger (26) sowie einen oder mehrere in Bezug zum Träger (26) zwischen einer Kontaktstellung mit dem anderen Kontaktstück und einer zurückgezogenen Stellung bewegbare Kontaktfinger (41) umfasst,
    • elektromagnetischen Kompensationsmitteln (88) zur Beaufschlagung des bzw. der Kontaktfinger mit elektromagnetischen Kräften, die darauf gerichtet sind, den bzw. die Kontaktfinger in Kontakt mit dem anderen Kontaktstück zu halten,
    • eine Ausschaltfeder (52), die dazu ausgelegt ist, sich durch Übergang von einer Gespannt-Stellung in eine Entspannt-Stellung zu entspannen
    • eine kinematische Kette, die mit der Ausschaltfeder (52) und mit den zwei Kontaktstücken (28, 30) so zusammenwirkt, dass durch die Entspannung der Ausschaltfeder (52) der Träger (26) in seine Ausschaltstellung verbracht wird, welche kinematische Kette ein kinematisches Kopplungselement (24) zur Verbindung mit dem Träger umfasst,
    • einen Ausschaltmechanismus (10) mit einer Ausschaltsperre (60), die dazu ausgelegt ist, eine Verriegelungsstellung einzunehmen, in der sie die Entspannung der Ausschaltfeder (52) verhindert, und die Ausschaltfeder (52) durch Verlassen der Verriegelungsstellung freizugeben,
    • sowie Betätigungsmittel umfasst, die mit dem beweglichen Kontaktstück (28) und mit der Ausschaltsperre (60) zusammenwirken, um den ultraschnellen Übergang der Ausschaltsperre (60) in ihre Entriegelungsstellung zu bewirken, wenn die Resultierende der vom Träger (26) auf das kinematische Kopplungselement (24) ausgeübten Kräfte einen bestimmten, der ultraschnellen Abschaltung zugeordneten Ansprechwert überschreitet,
    dadurch gekennzeichnet, dass
    • der Pol bzw. die Pole elektromagnetische Begrenzungsmittel (90) zur Beaufschlagung des bzw. der Kontaktfinger (41) mit elektromagnetischen Kräften umfassen, die darauf gerichtet sind, den bzw. die Kontaktfinger (41) in ihre zurückgezogene Stellung zu bringen, und dass
    • die elektromagnetischen Kompensationsmittel (88) und die elektromagnetischen Begrenzungsmittel (90) so ausgebildet sind, dass der bzw. die Kontaktfinger (41) in Kontakt mit dem anderen Kontaktstück (30) gehalten werden, wenn der über die zwei Kontaktstücke (28, 30) fließende Strom unterhalb eines so genannten Begrenzungs-Schwellwerts liegt, und dass oberhalb des genannten Schwellwerts der bzw. die Kontaktfinger (41) in ihre zurückgezogene Stellung überführt werden, und dass
    • die Resultierende der durch den Träger (26) auf das kinematische Kopplungsglied (24) ausgeübten Kräfte unterhalb des Ansprechwerts der ultraschnellen Abschaltung liegt, wenn der Wert des über das bewegliche Kontaktstück (28) fließenden Stroms den Begrenzungs-Schwellwert erreicht.
  2. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, dass die Betätigungsmittel Federmittel (74, 76) umfassen, die den genannten Ansprechwert der ultraschnellen Abschaltung definieren.
  3. Leistungsschalter nach Anspruch 2, dadurch gekennzeichnet, dass die Federmittel (74, 76) so eingestellt sind, dass die ultraschnelle Abschaltung erfolgt, nachdem der begrenzte Strom seinen Maximalwert erreicht hat.
  4. Leistungsschalter nach irgendeinem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass der Pol bzw. die Pole eine Lichtbogenlöschkammer (35) und einen Magnetkreis (92) zur Erzeugung eines Magnetfelds umfassen, dessen Stärke von dem über das andere Kontaktstück (30) fließenden Strom abhängt und das so gerichtet ist, dass es auf den bei Trennung der Kontaktstücke (28, 30) entstehenden Lichtbogen Kräfte ausübt, die versuchen, den Lichtbogen in die Lichtbogenlöschkammer (35) zu leiten.
  5. Leistungsschalter nach irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Träger (26) relativ zum Chassis (12) um eine feststehende Achse (40) gedreht werden kann und dass die Kontaktfinger (41) um eine, mit dem Träger verbundene Achse (42) verschwenken und durch eine oder mehrere, mit dem Träger (26) zusammenwirkende Rückstellfedern (28) in die Kontaktstellung zurückgeführt werden.
EP99410088A 1998-07-29 1999-07-22 Leistungsschalter mit hoher elektrodynamischer Festigkeit und Ausschaltleistung Expired - Lifetime EP0977233B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9809938 1998-07-29
FR9809938A FR2781921B1 (fr) 1998-07-29 1998-07-29 Disjoncteur a tenue electrodynamique et pouvoir de coupure eleves

Publications (2)

Publication Number Publication Date
EP0977233A1 EP0977233A1 (de) 2000-02-02
EP0977233B1 true EP0977233B1 (de) 2006-05-03

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US (1) US6018284A (de)
EP (1) EP0977233B1 (de)
JP (1) JP4278787B2 (de)
CN (1) CN1168114C (de)
DE (1) DE69931109T2 (de)
ES (1) ES2262299T3 (de)
FR (1) FR2781921B1 (de)

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FR2781921A1 (fr) 2000-02-04
DE69931109T2 (de) 2006-10-12
EP0977233A1 (de) 2000-02-02
CN1168114C (zh) 2004-09-22
US6018284A (en) 2000-01-25
DE69931109D1 (de) 2006-06-08
JP4278787B2 (ja) 2009-06-17
ES2262299T3 (es) 2006-11-16
FR2781921B1 (fr) 2000-09-15
JP2000106075A (ja) 2000-04-11
CN1253371A (zh) 2000-05-17

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