EP1850361B1 - Überstrom Aktor mit schneller Auslösung und Verwendung - Google Patents

Überstrom Aktor mit schneller Auslösung und Verwendung Download PDF

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Publication number
EP1850361B1
EP1850361B1 EP07290273A EP07290273A EP1850361B1 EP 1850361 B1 EP1850361 B1 EP 1850361B1 EP 07290273 A EP07290273 A EP 07290273A EP 07290273 A EP07290273 A EP 07290273A EP 1850361 B1 EP1850361 B1 EP 1850361B1
Authority
EP
European Patent Office
Prior art keywords
movable part
actuator
loops
transducer
terminals
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.)
Not-in-force
Application number
EP07290273A
Other languages
English (en)
French (fr)
Other versions
EP1850361A1 (de
Inventor
Alain Fontanet
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.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SNC
Legrand France SA
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 Legrand SNC, Legrand France SA filed Critical Legrand SNC
Priority to PL07290273T priority Critical patent/PL1850361T3/pl
Publication of EP1850361A1 publication Critical patent/EP1850361A1/de
Application granted granted Critical
Publication of EP1850361B1 publication Critical patent/EP1850361B1/de
Not-in-force legal-status Critical Current
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
    • H01H77/107—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 characterised by the blow-off force generating means, e.g. current loops
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge

Definitions

  • the invention relates generally to the field of electrical protection.
  • the invention relates, in a first aspect, an actuator sensitive to electrical overcurrent and comprising two electrical pads spaced apart from each other, a movable and conductive part, and an electromechanical transducer, the transducer moving the workpiece mobile, depending on an electric current applied to this transducer and against at least one restoring force applied to the moving part, between a rest position in which the moving part is physically in contact with each of the two pads and a release position in which this moving part is distant from each of the electrical pads, the transducer being provided with two connection terminals and comprising first and second loops disposed on either side of the movable part and electrically connected to each other.
  • each loop producing, in a zone of influence and under the effect of the electrical carrier flowing between said terminals, a magnetic field having a main direction, and the movable part being electrically disposed between said terminals and extending in the zone of influence of each loop, transversely to the main direction of the magnetic field produced by this loop.
  • a device of this type is for example known to those skilled in the art by the document of DE 196 29 867 .
  • Current actuators can be of several types, and generally consist of either electromagnets or electrodynamic pots.
  • Electromagnet actuators have the disadvantage of having time constants of the order of one millisecond and are therefore relatively slow, in particular when they are of the variable reluctance type, the electrodynamic pot actuators having in turn the disadvantage of offering only very small races.
  • the known actuators have a relatively complex structure.
  • the purpose of the invention is to propose an actuator free from at least one of the defects noted on the existing actuators.
  • the actuator of the invention is essentially characterized in that the first and second loops together form an induction coil producing, in a single area of influence, a single magnetic field exerting on the moving part a single Laplace force acting against a single restoring force.
  • the moving part, in the actuator of the invention is arranged to be subjected only to a Laplace force, for example compensated in normal regime by a restoring force exerted by a spring, and not two Laplace forces acting in opposite directions on its ends and compensated by an elastic return torque.
  • the first and second loops which are for example identical, may comprise only one turn each.
  • Each of these first and second loops is constituted for example by a metal blank cut and folded, the moving part may also take the form of a bar.
  • the actuator of the invention is very fast and ideally applicable to the realization of a quick release for an active safety device.
  • the invention relates to an actuator (or actuator) sensitive to an electrical overcurrent, of the type comprising two electrical pads 11 and 12 spaced from one another, a movable conductive part 2, and an electromechanical transducer 3.
  • the conductive part 2 is movable between a rest position in which it is physically in contact with each of the pads 11 and 12, and a release position in which the movable part 2 is distant from each of the pads.
  • the function of the transducer 3 is to move the moving part 2, as a function of an electric current which is applied on its terminals 31 and 32, against a restoring force applied to the moving part 2, this force of recall may be constituted by the force of gravity and / or by an elastic force exerted by a spring (not shown).
  • the transducer 3 is formed by an electromagnetic induction coil, adapted to produce, under the effect of the electric current flowing between its terminals 31 and 32, a magnetic field having a main direction H in a zone of Z influence.
  • the moving part 2 is electrically disposed between the terminals 31 and 32 of the coil 3 and extends in the zone of influence Z of this coil, transversely to the main direction H of the magnetic field.
  • the moving part 2 is both immersed in the magnetic field produced by the coil 3 and traversed by the same current as this coil, so that it is subjected to Laplace forces.
  • the actuator thus formed has an extremely low time constant.
  • the induction coil 3 consists of two identical loops 3A and 3B, arranged on either side of the moving part 2, electrically connected to each other via this moving part 2, and formed preferably each by a single turn.
  • the loops 3A and 3B are advantageously supplied with current by a charged capacitor connected to the coil 3 by means of a static relay allowing a fast discharge of the electrical energy stored in the capacitor.
  • the actuator of the invention is not sensitive to the direction of the current insofar as the forces involved are proportional to the square of the intensity of the current.
  • the current peaks can be large, for example of the order of 1000A, which causes significant Laplace forces on the moving part 2, which is printed an extremely fast movement.
  • each of the loops 3A and 3B is advantageously constituted by a metal blank cut and folded.
  • the actuator of the invention finds a privileged application in the realization of a quick release for an active safety device, in particular for a circuit breaker provided with a power supply and capable of using the energy used in this actuator to open the main circuit of this circuit breaker in case of emergency, typically in the event of a short circuit.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Lock And Its Accessories (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Claims (6)

  1. Schalter, der auf eine elektrische Überspannung anspricht und umfasst zwei elektrische Kontaktstellen (11, 12), die in Abstand zueinander liegen, ein bewegliches und leitfähiges Teil (2) und einen elektromechanischen Wandler (3), wobei der Wandler (3) das bewegliche Teil (2) in Abhängigkeit von einem an diesen Wandler (3) angelegten elektrischen Strom und gegen wenigstens eine auf das bewegliche Teil (2) aufgebrachte Rückstellkraft zwischen einer Ruheposition, in welcher das bewegliche Teil (2) physisch in Kontakt mit jedem der zwei Kontaktstellen (11, 12) ist, und einer Auslöseposition, in welcher dieses bewegliche Teil (2) entfernt von jedem der elektrischen Kontaktstellen (11, 12) ist, verschiebt, wobei der Wandler (3) mit zwei Abzweigklemmen (31, 32) versehen ist und eine erste und eine zweite Schleife (3A, 3B) aufweist, die beiderseits des beweglichen Teils (2) angeordnet sind und miteinander mithilfe dieses beweglichen Teils (2) elektrisch verbunden sind, wobei jede Schleife in einer Einflusszone (Z) und unter der Wirkung des zwischen den Klemmen (31, 32) zirkulierenden elektrischen Stroms ein Magnetfeld erzeugen, das eine Hauptrichtung (H) aufweist, und das bewegliche Teil (2) elektrisch zwischen den Klemmen (31, 32) angeordnet ist und sich in die Einflusszone (Z) jeder Schleife erstreckt, quer zur Hauptrichtung (H) des Magnetfeldes, das durch diese Schleife erzeugt wird, dadurch gekennzeichnet, dass die erste und zweite Schleife (3A, 3B) zusammen eine Induktionsspule (3) bilden, welche in einer einzigen Einflusszone (Z) ein einziges Magnetfeld erzeugen, das auf das bewegliche Teil eine einzige Laplace-Kraft ausübt, die gegen eine einzige Rückstellkraft wirkt.
  2. Schalter nach Anspruch 1, dadurch gekennzeichnet, dass die erste und zweite Schleife (3A, 3B) identisch sind.
  3. Schalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jede der ersten und zweiten Schleife (3A, 3B) ein einzige Windung aufweist.
  4. Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jede der ersten und zweiten Schleife (3A, 3B) durch eine abgeschnittene und gebogene Metallscheibe gebildet wird.
  5. Schalter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das bewegliche Teil (2) die Form eines Steges annimmt.
  6. Verwendung des Schalters nach einem der vorhergehenden Ansprüche zur Verwirklichung einer schnellen Auslösung für ein aktives Sicherheitselement.
EP07290273A 2006-04-28 2007-03-05 Überstrom Aktor mit schneller Auslösung und Verwendung Not-in-force EP1850361B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07290273T PL1850361T3 (pl) 2006-04-28 2007-03-05 Czuły mechanizm uruchamiający do przetężenia elektrycznego i z szybkim rozłączaniem, oraz jego zastosowanie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0603870A FR2900496B1 (fr) 2006-04-28 2006-04-28 Actionneur sensible a une surintensite electrique et a declenchement rapide, et application

Publications (2)

Publication Number Publication Date
EP1850361A1 EP1850361A1 (de) 2007-10-31
EP1850361B1 true EP1850361B1 (de) 2010-04-28

Family

ID=37487402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290273A Not-in-force EP1850361B1 (de) 2006-04-28 2007-03-05 Überstrom Aktor mit schneller Auslösung und Verwendung

Country Status (6)

Country Link
EP (1) EP1850361B1 (de)
AT (1) ATE466374T1 (de)
DE (1) DE602007006090D1 (de)
ES (1) ES2347369T3 (de)
FR (1) FR2900496B1 (de)
PL (1) PL1850361T3 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3101678B1 (de) 2015-06-01 2017-09-13 Wöhner GmbH & Co. KG Elektrotechnische Systeme Stromunterbrecher
CN113948349B (zh) * 2021-10-28 2023-12-12 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） 一种断路器用压电脱扣机构

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE464158B (sv) * 1989-07-04 1991-03-11 Asea Brown Boveri Kontaktanordning foer elkopplare
DE19629867C2 (de) * 1996-07-24 2003-07-24 Moeller Gmbh Strombegrenzender Leistungsschalter
FR2897469B1 (fr) 2006-02-13 2009-07-10 Legrand France Dispositif de commutation electrique aux contacts electriques renforces

Also Published As

Publication number Publication date
FR2900496B1 (fr) 2016-01-01
ATE466374T1 (de) 2010-05-15
FR2900496A1 (fr) 2007-11-02
EP1850361A1 (de) 2007-10-31
ES2347369T3 (es) 2010-10-28
DE602007006090D1 (de) 2010-06-10
PL1850361T3 (pl) 2010-09-30

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