EP0543740A1 - In einer Fernbedienungseinheit inkorporierter elektromagnetischer Betätigungseinrichtung - Google Patents

In einer Fernbedienungseinheit inkorporierter elektromagnetischer Betätigungseinrichtung Download PDF

Info

Publication number
EP0543740A1
EP0543740A1 EP92420400A EP92420400A EP0543740A1 EP 0543740 A1 EP0543740 A1 EP 0543740A1 EP 92420400 A EP92420400 A EP 92420400A EP 92420400 A EP92420400 A EP 92420400A EP 0543740 A1 EP0543740 A1 EP 0543740A1
Authority
EP
European Patent Office
Prior art keywords
pallet
rotor
actuation device
coil
spring
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.)
Granted
Application number
EP92420400A
Other languages
English (en)
French (fr)
Other versions
EP0543740B1 (de
Inventor
Olivier Dardare
Daniel Dufrène
Alain Frolla
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.)
Schneider Electric SE
Original Assignee
Merlin Gerin SA
Schneider Electric SE
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 Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0543740A1 publication Critical patent/EP0543740A1/de
Application granted granted Critical
Publication of EP0543740B1 publication Critical patent/EP0543740B1/de
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
    • H01H71/66—Power reset mechanisms
    • H01H71/70—Power reset mechanisms actuated by electric motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H75/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of power reset mechanism
    • H01H75/02—Details
    • 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
    • H01H71/66—Power reset mechanisms
    • H01H2071/665—Power reset mechanisms the reset mechanism operating directly on the normal manual operator, e.g. electromagnet pushes manual release lever back into "ON" position

Definitions

  • the invention relates to an electromagnetic actuation device, in particular incorporated in a remote control unit, comprising an excitation coil associated with a magnetic circuit.
  • a first type of electromagnetic actuator used in the remote control blocks for closing and / or opening circuit breakers is formed by at least one electromagnet, described by way of example in documents FR-A-2,559,616 and 2,567,317.
  • the mechanical closing energy supplied by an electromagnet with a plunger core during the excitation of the coil is relatively limited, for a predetermined bulk, and is not suitable for driving mechanisms of abrupt closing circuit breakers, associated with control auxiliaries.
  • the remote-controlled opening is operated by means of a small opening electromagnet which sends a trip order to the circuit breaker. The opening energy is thus generated by the accumulator spring of the main mechanism of the circuit breaker, and the opening electromagnet of the remote control unit behaves like a simple emission coil or other tripping auxiliary.
  • a second type of electromagnetic actuator for a remote control unit uses a rotary electric motor associated with a speed reducer mechanism to operate the two closing and opening operations of the circuit breaker.
  • the motor is generally controlled by an electrical circuit with three wires and two on-off control buttons, and limit switch contacts cause the excitation of the motor to be interrupted after each maneuver.
  • Such a device is very complicated and requires significant space.
  • the object of the invention is to simplify the operation of an electromagnetic actuation device for a block remote control with opening energy accumulation.
  • the actuating device In the separated position of the pallet, the actuating device has a motor operating mode, since the majority of the magnetic flux following the excitation of the coil, passes through the rotor.
  • the actuating device behaves like an electromagnet. The majority of the magnetic flux then crosses the pallet, causing the motor to be put out of service.
  • the magnetic circuit and the coil constitute a common assembly for the two operating modes in motor and in electromagnet.
  • the reluctance of the magnetic circuit is variable according to the operating mode, and a low energy is sufficient to maintain the pallet in attracted position. To release the pallet, simply interrupt the excitation of the coil.
  • the rotor shaft is mechanically coupled to a speed reducer associated with a mechanism for arming an energy accumulator spring, and for driving a lever.
  • the unlocking of the pallet lock takes place automatically at the end of arming the accumulator spring by the action of a first control link associated with the mechanism.
  • the pallet is connected on the other hand to a hooking device by means of a second control link to maintain the accumulator spring in the armed state when the pallet is in the attracted position.
  • the expansion of the accumulator spring occurs after the excitation of the coil has been interrupted, causing the pallet to pass from the attracted position to the separated position.
  • the handle of the remote control unit is mechanically coupled to the manual operating member for closing and opening an adjacent circuit breaker unit, to ensure the closing of the contacts of the circuit breaker unit during the arming of the accumulator spring resulting from the rotational movement of the rotor away from the pallet, and the opening of the contacts by the rebound action of the spring resulting from the interruption of the excitation of the coil.
  • the mechanism comprises a mechanical transmission connection coupled to the lever, and a mechanical arming connection cooperating with the attachment device and with one of the strands of the accumulator spring.
  • Figures 1 and 2 are schematic views of the actuating device according to the invention, operating respectively as a motor and as an electromagnet.
  • Figure 3 shows a profile view of Figure 2.
  • FIG. 4 represents an assembly of a circuit breaker block and a remote control block.
  • Figure 5 is a schematic view of the remote control unit, the pallet of the actuator being shown in the attracted position.
  • an electromagnetic actuation device 10 comprises a fixed U-shaped magnetic circuit 12 having a first pair of pole pieces 14,16 between which a rotor 18 is disposed, and a second pair of pole pieces 20,22 cooperating with a pallet 24 made of ferromagnetic material, which is pivotally mounted on an axis 26.
  • a return spring 28 biases the pallet 24 towards a separated position (FIG. 1), and a lock 30 is capable of holding the pallet 24 locked in the open position.
  • the rotary shaft 32 of the rotor 18 extends parallel to the axis 26 of articulation of the pallet 24, and a first radial gap 34 (FIG. 2) is formed between the rotor 18 and the two pole pieces 14, 16.
  • a coil 36 or excitation winding is mounted on the magnetic circuit 12 to generate an inductive flux passing through the radial air gap 34, and a magnetic attraction flow in a second air gap 38 formed between the pole face 20 and the pallet 24.
  • the actuating device 10 is advantageously used in a remote control unit 40 intended to be attached to a circuit breaker unit 42 (FIG. 4) to ensure the automatic opening and closing of the contacts of the circuit breaker unit.
  • a speed reducer 46 driven by the shaft 32 of the rotor 18.
  • the output of the speed reducer 46 is coupled to a cam mechanism 48, having a mechanical transmission link 50 with a drive lever 52, and a mechanical arming link 54 with an energy storage spring 56.
  • the lever 52 projects from the remote control unit 40, and is permanently coupled to the manual operating member of the circuit breaker unit 42. Between the pallet 24 and the mechanism 48 there is also a first control link 58 of the associated lock 30 to the pallet 24, and a second control link 60 of a hooking device 62 cooperating with the mechanical arming link 54 to keep the spring 56 armed when the rotor 18 stops.
  • One of the strands of the spring 56 energy accumulator is rotated by a stud of the mechanical arming link 54, and the other strand bears on a stop 66.
  • the pole piece 20 of the magnetic circuit 12 is equipped with a ring or coil 64 ofquipr to ensure the phase shift of the second magnetic flux relative to the excitation current of the coil 36, thereby avoiding any vibration during the attraction of the pallet 24 after unlocking the lock 30.
  • the operation of the actuating device 10 of the remote control unit 40 is as follows:
  • the latch 30 ensures positive locking of the pallet 24 in the separated position. Almost all of the magnetic flux generated by the excitation of the coil 36 passes through the pole pieces 14, 16, the radial air gap 34 and the rotor 18, and causes the rotor 18 to rotate.
  • the attachment device 62 is in the inactive position, and allows the arming of the spring 56 via the reduction gear 46 and the mechanical connection 54 of the mechanism 48. The latter simultaneously transmits a closing operation to the lever 52 via the mechanical transmission link 50. This results in closing of the contacts of the circuit breaker unit 42 during the arming phase of the spring 56.
  • the actuation device 10 behaves like a single-phase asynchronous or synchronous rotary motor. The energy stored in the spring 56 will be used later for the opening of the contacts of the circuit breaker unit 42.
  • the first control link 58 causes the latch 30 to be withdrawn so as to release the pallet 24.
  • the coil 36 remains energized, and the flux of magnetic attraction in the second air gap 38 is sufficient to attract the pallet 24 against the pole face 20 against the return force of the spring 28 ( Figure 2).
  • the reluctance of the magnetic circuit through the pallet 24 is less than that imposed by the first radial gap 34 of the rotor 18.
  • the majority of the magnetic flux is then looped by the pallet 24 causing the rotor 18 to stop.
  • attracted position of the pallet 24 (FIG. 2) is stable, as long as the excitation of the coil 36 is maintained.
  • the second control link 60 brings the latching device 62 in the active position, so as to lock the accumulator spring 56 in the armed position, as soon as the rotor 18 stops. Low energy is required to keep the pallet 24 in the attracted position .
  • the accumulator spring 56 In the open position of the circuit breaker block 42, the accumulator spring 56 is disarmed, and the latch 30 keeps the pallet 24 in the separated position. The resetting of the spring 56 takes place when the circuit breaker block 42 is closed again by energizing the coil 36 of the remote control block 40.
  • the operating mode of the actuator block 10 stops when the circuit breaker block 42 is closed. From the end of the arming stroke of the accumulator spring 56, the actuation block 10 plays the role an operating solenoid with the same coil 36 as that used for the engine operating mode.
  • the automatic stopping of the rotor 18 after unlocking the lock 30 can be controlled by additional braking means (not shown).
  • a mechanical brake can be associated with the rotor shaft 18 to stop the rotation of the motor as soon as the pallet 24 is attracted. It is also possible to choose an electric braking by injecting a direct or rectified current, or by inserting a series impedance in the supply circuit of the coil 36.

Landscapes

  • Breakers (AREA)
  • Electromagnets (AREA)
  • Lock And Its Accessories (AREA)
EP92420400A 1991-11-22 1992-11-06 In einer Fernbedienungseinheit inkorporierter elektromagnetischer Betätigungseinrichtung Expired - Lifetime EP0543740B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9114754A FR2684233B1 (fr) 1991-11-22 1991-11-22 Dispositif d'actionnement electromagnetique incorpore dans un bloc de telecommande.
FR9114754 1991-11-22

Publications (2)

Publication Number Publication Date
EP0543740A1 true EP0543740A1 (de) 1993-05-26
EP0543740B1 EP0543740B1 (de) 1995-08-30

Family

ID=9419467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92420400A Expired - Lifetime EP0543740B1 (de) 1991-11-22 1992-11-06 In einer Fernbedienungseinheit inkorporierter elektromagnetischer Betätigungseinrichtung

Country Status (9)

Country Link
US (1) US5276420A (de)
EP (1) EP0543740B1 (de)
JP (1) JPH0629117A (de)
KR (1) KR930011039A (de)
CN (1) CN1028936C (de)
CA (1) CA2083126A1 (de)
DE (1) DE69204426T2 (de)
ES (1) ES2079166T3 (de)
FR (1) FR2684233B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2746209A1 (fr) * 1996-03-18 1997-09-19 Schneider Electric Sa Dispositif de telecommande pour un disjoncteur modulaire

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6034581A (en) * 1998-06-30 2000-03-07 Siemens Energy & Automation, Inc. Remote controlled circuit breaker
JP4752879B2 (ja) 2008-07-04 2011-08-17 パナソニック電工株式会社 平面コイル

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2161011A1 (de) * 1971-12-09 1973-06-14 Erich Aichele Stellantrieb
FR2559616A1 (fr) * 1984-02-14 1985-08-16 Merlin Gerin Bloc auxiliaire de commande a distance d'un disjoncteur electrique
FR2567317A1 (fr) * 1984-07-06 1986-01-10 Merlin Gerin Dispositif de telecommande, notamment d'ouverture d'un disjoncteur electrique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2161011A1 (de) * 1971-12-09 1973-06-14 Erich Aichele Stellantrieb
FR2559616A1 (fr) * 1984-02-14 1985-08-16 Merlin Gerin Bloc auxiliaire de commande a distance d'un disjoncteur electrique
FR2567317A1 (fr) * 1984-07-06 1986-01-10 Merlin Gerin Dispositif de telecommande, notamment d'ouverture d'un disjoncteur electrique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2746209A1 (fr) * 1996-03-18 1997-09-19 Schneider Electric Sa Dispositif de telecommande pour un disjoncteur modulaire
EP0797229A1 (de) * 1996-03-18 1997-09-24 Schneider Electric Sa Fernsteuerungsvorrichtung für einen modulären Schalter
CN1068959C (zh) * 1996-03-18 2001-07-25 施耐德电器工业公司 模块式断路器的遥控装置

Also Published As

Publication number Publication date
US5276420A (en) 1994-01-04
CA2083126A1 (en) 1993-05-23
FR2684233B1 (fr) 1993-12-31
FR2684233A1 (fr) 1993-05-28
EP0543740B1 (de) 1995-08-30
DE69204426T2 (de) 1996-06-20
KR930011039A (ko) 1993-06-23
ES2079166T3 (es) 1996-01-01
CN1028936C (zh) 1995-06-14
JPH0629117A (ja) 1994-02-04
CN1072798A (zh) 1993-06-02
DE69204426D1 (de) 1995-10-05

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