EP1016112B1 - Dispositif pour obtenir une energie auxiliaire pour un systeme de declenchement, et mode d'emploi - Google Patents

Dispositif pour obtenir une energie auxiliaire pour un systeme de declenchement, et mode d'emploi Download PDF

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Publication number
EP1016112B1
EP1016112B1 EP98954194A EP98954194A EP1016112B1 EP 1016112 B1 EP1016112 B1 EP 1016112B1 EP 98954194 A EP98954194 A EP 98954194A EP 98954194 A EP98954194 A EP 98954194A EP 1016112 B1 EP1016112 B1 EP 1016112B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
generator
low
switch contact
voltage 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.)
Expired - Lifetime
Application number
EP98954194A
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German (de)
English (en)
Other versions
EP1016112A1 (fr
Inventor
Holger Hochgraef
Ulrich Baumgärtl
Wolfgang Röhl
Jeffery C. Mizener
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1016112A1 publication Critical patent/EP1016112A1/fr
Application granted granted Critical
Publication of EP1016112B1 publication Critical patent/EP1016112B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01H71/127—Automatic release mechanisms with or without manual release using piezoelectric, electrostrictive or magnetostrictive trip units

Definitions

  • the invention relates to a low-voltage circuit breaker with a tripping system and an arrangement for extracting one Auxiliary energy for the operation of the release system, the low voltage circuit breaker being a spring operable drive device for closing at least one movable switching contact and a detachable latching device to maintain the closed state of the switching contact, and the trigger system Trigger circuit for evaluating one via the switch contact flowing current based on specified parameters and a switching device which can be activated by the trigger circuit Release of the latching device by means of an actuating device for the purpose of opening the switching contact.
  • a low-voltage circuit breaker with these features corresponds to a commercially available one Concept such as that of EP 0 590 937 A2 can be seen. Details of the mechanical part of a Low-voltage circuit breakers for high switching capacities can be found, for example, in DE 44 16 088 Cl.
  • the auxiliary energy required to operate the trigger system can be provided according to two fundamentally different principles become.
  • One of these principles is the Provision of an independent auxiliary energy source, d. H. a battery or a connection to an independent auxiliary network. Because batteries have a limited lifespan and an auxiliary network can fail, the operation of the Tripping system according to this principle as not sufficiently reliable viewed.
  • the further principle is that the operation of the Trigger system required auxiliary energy from the same network in which the circuit breaker is located.
  • the circuit breaker flowing current provided Current transformers also used to operate the trip system to hold and the actuator mentioned feed when the switch contacts are to be opened.
  • the actuator either directly with the Secondary current of the current transformer or it can with the interposition of a power supply device a capacitor can be charged as a buffer. Both arrangements differ in a specific way in terms of circuitry and speed the response of the actuator.
  • the invention has for its object a low-voltage circuit breaker with an arrangement for To create an auxiliary energy of the type mentioned, which is characterized by a particularly high level of reliability distinguished and at the same time only a small circuitry Effort required.
  • this object is achieved in that to provide the auxiliary energy with the drive device a trained as a mechanical-electrical converter Generator connected and when the switch contact closes is inevitably operable.
  • the auxiliary energy is thus the mechanical kinetic energy of the circuit breaker won.
  • the circuit breaker is mechanically different must be interpreted as has been customary or necessary so far is. Rather, the fact of the invention Made use of that in the circuit breaker a not inconsiderable Excess mechanical drive energy available is. This excess is required to also apply the greatest resistance to movement Switch on with subsequent latching of the switch contacts to effect in the closed position.
  • the excess drive energy through energy-consuming buffers and mechanical locks collected in order to avoid that important components of the Circuit breaker due to jerky termination of the drive movement be damaged or destroyed. According to the invention the excess drive energy will at least partially into an electrical power supply to operate the Triggering system converted and thus usefully used.
  • a piezoelectric Generator be provided. This is particularly suitable if the auxiliary power along a proportionate won a small part of the drive path of the drive device shall be.
  • a magnet-electric one Generator is a magnet-electric one Generator. This can, for example Have the shape of a linear generator, at least along part of the drive path is actuated.
  • auxiliary energy With the principle of obtaining an auxiliary energy according to the invention it is related to the duration of energy production is relatively small. Since it may be desirable that to keep generated energy available for a longer period of time, it is recommended to put between the generator and the trigger system to switch an energy store.
  • the arrangement is made of the property the piezoelectric actuators made use of that only one to maintain their activated state extremely low energy is required. This can be done in the already mentioned way taken from an energy storage that part of that generated by the generator Absorbs energy after the initial activation of the piezoelectric actuator remains. Through the bypass switch the actuator is deactivated and its mechanical idle state restored. As a result, the latching device solved.
  • Piezoelectric generators and piezoelectric actuators are known in a number of different versions. For example are a piezoelectric generator in the DE 34 24 339 A1 and a piezoelectric actuation of a Switching contact described in DE 36 29 040 A1.
  • circuit arrangements explained above can still can be improved in that an AND gate for linking a signal emitted by the trigger circuit for the Occurrence of a short-circuit current and a signal from the generator as well as for outputting an output signal when it occurs both signals are provided in a temporal connection.
  • a circuit arrangement equipped with an AND gate is can advantageously be used to bring about an undelayed Trip of the circuit breaker by means of the output signal of the AND gate when the circuit breaker is closed to an existing short circuit.
  • Figure 1 shows schematically simplified the overall arrangement a circuit breaker with a drive device and an arrangement for obtaining auxiliary energy.
  • FIG. 2 also schematically shows a first embodiment shown, in order to solve a latching device a trigger magnet is provided.
  • FIG shown Another exemplary embodiment is shown schematically in FIG shown, in which a piezoelectric actuator with the Interlocking device cooperates.
  • a trained as a generator to provide auxiliary energy The end stop is illustrated in FIG. 4.
  • FIG 1 are part of a low-voltage circuit breaker a movable switch contact 1 and a hereby cooperating stationary switch contact 2 with subsequent Conductors 3 and 4 as part of a Main current path shown. Contrary to the simplified representation common circuit breakers have three or four main current paths on and are therefore with a corresponding multiple Provide arrangement of the modules mentioned.
  • the moveable Switch contact 1 is articulated with a pivoted Contact carrier 5 connected, being between the Contact carrier 5 and the movable switching contact 1 a contact force spring 6 is located.
  • the spring accumulator 10 is shown in its tensioned state in which it is is held by a locking rod 11. It is also shown a release magnet 12 which operates in a known manner can be.
  • the circuit breaker performs its protective functions can, is on the current conductor 3 of the mentioned main current path a current transformer 17 is attached, the secondary winding 20 provides a current signal that is sent to a trigger circuit 21 is created.
  • This contains analog or in a known manner digital electronic circuits for evaluating the applied Current signals based on specified parameters, if necessary to control an actuator 22 which the latching device 16 acts.
  • the auxiliary power to operate the trigger circuit 21 and Actuating device 22 is operated by means of a generator 23 generated, which is connected to the drive linkage 13. It can be any generator of the already act as mentioned.
  • the generated auxiliary energy is over a prolonged period by storage in a capacitor 24 kept ready. Further details are given below of Figures 2 and 3 explained.
  • FIG 2 is only the main circuit of the circuit breaker with the one in its closed position movable switch contact 1 and the latching device and the trigger system shown.
  • the latching device 16 is shown as a locking bar with a locking lug 25 the one locking pin 26 which countered by a release magnet 27 the action of a return spring 30 is displaceable.
  • a switching device 31 is connected to the trigger circuit 21 belonging switch contact shown.
  • the trigger magnet 27 is not from a separate auxiliary network or by means of the current transformer 17, but by means of the in the Generator 23 ( Figure 1) generated and in a capacitor 24th cached energy is operated.
  • the locking pin 26 by a piezoelectric actuator 32 in Engagement with the locking lug 25 of the latching device 16 held.
  • the circuit breaker is triggered by that the switching device contained in the trigger circuit 21 31 is parallel to the actuator 32 and thus this short-circuited when the switching device 31 is closed becomes. This leads to the immediate resetting of the actuator 32 and to retract the locking pin 26 to release the Latching device 16.
  • a generator for generation 4 shows an end stop 33 of the auxiliary power supported relatively fixed on a wall 34 of the circuit breaker is.
  • the end stop 33 has a housing 35, in an arrangement of piezoelectric generators 36 located.
  • a plunger 37 serves to introduce kinetic energy into the piezoelectric generators 36.
  • Through a Arrow 41 is the transfer of the lever 40 from a rest position indicated in a switch position shown in dashed lines.
  • the end stop 33 is alike capable of absorbing a linear movement and a mechanical one Convert residual energy into an electrical auxiliary energy.
  • An AND gate 42 is shown in broken lines in FIG two input signals can be fed.
  • the one of the input signals is provided by the trigger circuit 21 when a short circuit current through the main circuit of the circuit breaker flows (conductor 3 and 4) and becomes accordingly hereinafter referred to as a short-circuit signal.
  • the further input signal of the AND gate 42 is from the generator 23 taken for auxiliary energy and thus arises at Switch on the circuit breaker.
  • This input signal is referred to below as the switch-on signal and is associated with the occurrence of an auxiliary energy on the generator 23, but does not represent the auxiliary energy itself the switch-on signal is generated by means of the generator 23 obtained practically without reducing the yield of energy.
  • the AND gate 42 makes a difference in the event of a short circuit Behavior of the circuit breaker enables, depending after whether the short circuit occurs when the circuit breaker is switched on or whether the circuit breaker is open existing short circuit is turned on. In the latter Case it is namely advantageous to the circuit breaker trip instantaneously to damage the circuit breaker itself and the associated switchgear or the associated To limit consumers as much as possible. In contrast, it is in usually required to delay triggering when a Short circuit occurs when the circuit breaker is switched on. This delay caused by the trigger circuit is used in systems with several in series Circuit breakers to ensure a desired selectivity, so that only faulty power supplies are switched off. The delayed triggering is given in the arrangement according to FIG. 1 effective if only the short-circuit signal occurs and therefore no output signal is output from the AND gate 42.

Claims (9)

  1. Disjoncteur basse tension comportant un dispositif de déclenchement et un dispositif pour obtenir une énergie auxiliaire pour le fonctionnement du dispositif de déclenchement, le disjoncteur basse tension comportant un dispositif (7) d'entraínement pouvant fonctionner par force élastique pour fermer au moins un contact (1) de commutation mobile et un dispositif (16) d'encliquetage amovible pour maintenir l'état fermé du contact (1) de commutation, et le système de déclenchement comprenant un circuit (21) de déclenchement pour estimer un courant passant dans le contact (1) de commutation à l'aide de paramètres prescrits et un dispositif (31) de commutation pouvant être activé par le circuit (21) de déclenchement pour la libération du dispositif (16) d'encliquetage au moyen d'un dispositif (22) d'actionnement à des fins d'ouverture du contact (1) de commutation, caractérisé en ce que, pour la mise à disposition de l'énergie auxiliaire, un générateur (23) réalisé en convertisseur mécanique-électrique est relié au dispositif (7) d'entraínement et peut être actionné de manière forcée lors de la fermeture du contact (1) de commutation.
  2. Disjoncteur basse tension suivant la revendication 1, caractérisé en ce que le générateur est réalisé en générateur (36) piézo-électrique.
  3. Disjoncteur basse tension suivant la revendication 1, caractérisé en ce que le générateur est réalisé en générateur magnétoélectrique.
  4. Disjoncteur basse tension suivant la revendication 1, caractérisé en ce que le générateur est réalisé en générateur tournant.
  5. Disjoncteur basse tension suivant l'une des revendications 2 à 4,
    caractérisé en ce qu'un accumulateur (24) d'énergie est monté entre le générateur et le système de déclenchement.
  6. Disjoncteur basse tension suivant l'une des revendications 2 à 5,
       caractérisé par les dispositions suivantes :
    le dispositif (22) d'actionnement comporte un actuateur (32) piézo-électrique à alimenter directement par l'énergie produite lors de la fermeture du contact de commutation par le générateur,
    le dispositif (16) d'encliquetage est réalisé de manière à pouvoir être actionné par activation de l'actuateur (32) pour maintenir l'état fermé du contact (1) de commutation,
    le dispositif de commutation est monté en parallèle à l'actuateur (32) en commutateur de court-circuit qui est à fermer pour ramener l'actuateur (32) et libérer le dispositif (16) d'encliquetage par le circuit (21) de déclenchement.
  7. Disjoncteur basse tension suivant l'une des revendications 2 à 5,
    caractérisé en ce que le générateur (36) fait partie d'une butée (33) qui n'est active qu'à la fin d'un déplacement de fermeture du contact (1) de commutation et qui est prévue pour la dissipation d'une énergie résiduelle restant après la fermeture du contact (1) de commutation et le passage à l'état actif du dispositif (16) d'encliquetage.
  8. Disjoncteur basse tension suivant l'une des revendications précédentes, caractérisé en ce qu'un élément (42) ET est prévu pour la combinaison d'un signal fourni par le circuit (21) de déclenchement pour l'apparition d'un courant de court-circuit et d'un signal du générateur (23, 26) ainsi que pour la fourniture d'un signal de sortie en cas d'apparition des deux signaux en connexion dans le temps.
  9. Utilisation du disjoncteur basse tension suivant la revendication 8 pour provoquer un déclenchement non retardé du disjoncteur au moyen du signal de sortie de l'élément (42) ET si le branchement du disjoncteur s'effectue sur un court-circuit déjà existant.
EP98954194A 1997-09-16 1998-09-14 Dispositif pour obtenir une energie auxiliaire pour un systeme de declenchement, et mode d'emploi Expired - Lifetime EP1016112B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19741659 1997-09-16
DE19741659 1997-09-16
DE19843245A DE19843245A1 (de) 1997-09-16 1998-09-11 Anordnung zur Gewinnung einer Hilfsenergie für ein Auslösesystem und Verwendung derselben
DE19843245 1998-09-11
PCT/DE1998/002774 WO1999014779A1 (fr) 1997-09-16 1998-09-14 Dispositif pour obtenir une energie auxiliaire pour un systeme de declenchement, et mode d'emploi

Publications (2)

Publication Number Publication Date
EP1016112A1 EP1016112A1 (fr) 2000-07-05
EP1016112B1 true EP1016112B1 (fr) 2001-12-12

Family

ID=26040182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98954194A Expired - Lifetime EP1016112B1 (fr) 1997-09-16 1998-09-14 Dispositif pour obtenir une energie auxiliaire pour un systeme de declenchement, et mode d'emploi

Country Status (3)

Country Link
EP (1) EP1016112B1 (fr)
DE (2) DE19843245A1 (fr)
WO (1) WO1999014779A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009033542A1 (de) 2009-07-14 2011-01-20 Siemens Aktiengesellschaft Schutzeinheit sowie elektrische Schaltanordnung mit einer Schutzeinheit

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10112563A1 (de) * 2001-03-15 2002-09-19 Kopp Heinrich Ag Vorrichtung zur Betätigung einer Auslösemechanik
DE102006048841A1 (de) * 2006-10-13 2008-04-17 IGAM Ingenieurgesellschaft für angewandte Mechanik mbH Schnellschaltender Auslösemechanismus
DE102011083583A1 (de) * 2011-09-28 2013-03-28 Siemens Aktiengesellschaft Schalter, insbesondere Leistungsschalter für Niederspannungen
DE102013203985A1 (de) 2013-03-08 2014-09-11 Siemens Aktiengesellschaft Schalter, insbesondere Leistungsschalter für Niederspannungen
EP2804197B1 (fr) * 2013-05-17 2015-12-30 ABB Technology AG Mécanisme de verrouillage pour l'activation d'un commutateur
CN106941326B (zh) * 2016-12-13 2019-01-01 西北工业大学 一种用于触发双稳态能量采集系统的自感知激励电路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702962A (en) * 1971-01-07 1972-11-14 Bosch Gmbh Robert Ac to dc rectifier circuit with rapid turn-off in case of overcurrent through the load circuit
DE3424339A1 (de) * 1984-06-28 1986-01-09 Siemens AG, 1000 Berlin und 8000 München Vakuumschalter mit einer einrichtung zur ueberwachung des vakuums
US5331501A (en) * 1992-09-30 1994-07-19 Westinghouse Electric Corp. Electrical switching apparatus with digital trip unit and memory reset

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009033542A1 (de) 2009-07-14 2011-01-20 Siemens Aktiengesellschaft Schutzeinheit sowie elektrische Schaltanordnung mit einer Schutzeinheit
DE102009033542B4 (de) * 2009-07-14 2013-09-19 Siemens Aktiengesellschaft Schutzeinheit sowie elektrische Schaltanordnung mit einer Schutzeinheit

Also Published As

Publication number Publication date
WO1999014779A1 (fr) 1999-03-25
DE19843245A1 (de) 1999-08-12
EP1016112A1 (fr) 2000-07-05
DE59802469D1 (de) 2002-01-24

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