EP0017575B1 - Schalter mit Schnellauslösung im Falle eines Fehlers - Google Patents

Schalter mit Schnellauslösung im Falle eines Fehlers Download PDF

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Publication number
EP0017575B1
EP0017575B1 EP80400424A EP80400424A EP0017575B1 EP 0017575 B1 EP0017575 B1 EP 0017575B1 EP 80400424 A EP80400424 A EP 80400424A EP 80400424 A EP80400424 A EP 80400424A EP 0017575 B1 EP0017575 B1 EP 0017575B1
Authority
EP
European Patent Office
Prior art keywords
armature
contactor
contact
contact carrier
coil
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
Application number
EP80400424A
Other languages
English (en)
French (fr)
Other versions
EP0017575A1 (de
EP0017575B2 (de
Inventor
Raymond Bresson
André Ducluzaux
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9224197&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0017575(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0017575A1 publication Critical patent/EP0017575A1/de
Publication of EP0017575B1 publication Critical patent/EP0017575B1/de
Application granted granted Critical
Publication of EP0017575B2 publication Critical patent/EP0017575B2/de
Expired legal-status Critical Current

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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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
    • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair

Definitions

  • Patent US 3,979,675 discloses such an apparatus, which fulfills a combined function of contactor and circuit breaker without duplication of the basic constituent elements.
  • the rapid opening control is operated by means of an electromagnetic thruster which becomes active when the conductor pole is crossed by a short-circuit current.
  • This propellant comprises a U-shaped magnetic circuit with a notch surrounding the movable contact bridge, the passage of current in the contact bridge generating a magnetic field in the air gap of the magnetic circuit.
  • the resulting electromagnetic forces cause the mobile contact bridge to detach, which abuts against the bottom of the thruster notch.
  • the arrangement of this thruster inside the contactor block necessarily requires the mounting of the contactor in the factory and does not lend itself to the construction of a modular system.
  • a vacuum contactor is associated with an electrodynamic repulsion trip device formed by a coil and a conductive disc.
  • the trigger is an integral and inseparable part of the contactor, and the rod of the transmission mechanism does not strike to separate the contacts, but attracts them via an auxiliary box.
  • the release coil is connected in series with the contacts of the contactor.
  • the invention aims to remedy these drawbacks and allow the realization of a modular system allowing a reduction in the cost of manufacture and storage.
  • the electrodynamic control is capable of moving the mobile assembly formed by the armature, the contact carrier and the movable contact against the force of attraction of the armature towards the open position of the contacts by breaking the if necessary, soldered contacts.
  • the coil of the electromagnet attracting the armature is preferably supplied with direct current or rectified with a self-holding contact, which opens from the start of the movement of the moving assembly in position d 'opening to confirm this opening.
  • the contactor can also be of the type with magnetic retention by remanence; there is then no contact to cut.
  • the contactor with a rapid opening command giving it a high breaking capacity, can constitute a protective device, in particular of an electric motor, the same current transformer for detecting an overload or a short-circuit driving respectively a normal opening by de-excitation of the control of the contactor block or a rapid opening by the electrodynamic release.
  • the contact carrier is common to the different poles as well as the closing control electromagnet and the rapid opening electrodynamic release.
  • the mobile assembly is preferably mobile in translation and carries one or more contact bridges ensuring a double break.
  • the trip unit comprises a mechanical locking of the striker in the position of opening of the contacts of the contactor unit which confirms and displays this state of opening of the contacts and of disconnection and keeps the device blocked in position d 'opening, thus requiring intervention to rearm the device.
  • the connection device according to the invention assumes the triple role of switching contactor and overload protection, of circuit breaker protection against short circuits and safety switch from simple and standard modular elements.
  • a contactor block 10 with molded housing 12 has input and output terminals 14, 16, connected to fixed contacts 18, 20, which cooperate with a movable contact bridge 22. Cut-off chambers 24 , 26 are associated with the contacts 18, 22; 20, 22 to extinguish the arcs drawn between these contacts during their separation.
  • the different poles of the contactor are advantageously housed in the same housing 12, and the contact bridges 22 of the different poles are carried by the same contact holder 28 slidably mounted to open or close the contacts 18, 20, 22.
  • the bridge contact 22 passes through a light 30 formed in the contact holder 28, to allow limited relative movement in the sliding direction against a leaf spring 32 of contact pressure.
  • the contact carrier 28 constitutes a one-piece assembly or is rigidly secured to a U-shaped frame 34, which cooperates with a cylinder head 36 of U-shaped conjugate.
  • a coil 38 of excitation surrounds the two legs of the cylinder head 36 to constitute an electromagnetic control well known per se, for moving the moving element formed by the armature 34, the contact carrier 28 and the contact bridges 22.
  • a spring 40 urges this moving element in the open position of the contacts 18, 20, 22, moving and maintaining the closed position of the contacts resulting from a supply of the coil 38 by a direct current source, represented in the figures by an accumulator 42.
  • the supply circuit of the coil 38 comprises in series a self-supply contact 44 and a trip contact 46, interrupting the supply of the coil 38 by the opening of any one of these contacts 44, 46.
  • the contact 44 is controlled by the armature 34. It remains closed during sque the armature 34 is attracted and pressed against the cylinder head 36, and it opens when the armature 34 is detached from the cylinder head 36.
  • An electrical control circuit 50 with push button 52 shunts the contact 44 to control the excitation of the coil 38, the contact 44 ensuring the self-supply of the coil 38 from the attraction of the armature 34 even after the opening of the push button 52.
  • the block 10 constitutes a standard contactor, the operation of which is briefly recalled below.
  • the contacts 18, 20, 22 of the contactor are open.
  • the actuation of the push button 52 controls the closing of the contacts 18, 20, 22 by attraction of the armature 34 by the energized coil 38.
  • the contact 44 ensures the self-supply of the coil 38.
  • This supply can be interrupted by the opening of the contact 44 by a manual control, not shown, or by interruption of the supply by any other operating means for controlling the contactor opening.
  • the contactor 10 can provide control and overload protection for an electric motor (not shown), and a large number of opening and closing operations.
  • the opening speed of the contacts 18, 20, 22, derived from the force of the spring 40 is relatively low, which limits the breaking capacity of the contactor 10.
  • the invention consists in associating with the standard contactor 10 an electrodynamic trip device 58 of the type described in French patent No 2 357 048.
  • the molded case 60 of the electrodynamic trip device 58 is attached and fixed by screws (not shown) to the case 12 of the contactor 10.
  • An elongated striker 62 extends and is movable in the direction of movement of the movable assembly 34, 28, 22 of the contactor 10, passing through aligned orifices 64 formed in the housings 12, 160.
  • the end of the striker 62 internal to the housing 60, carries a conductive disc 66, disposed opposite a coil 68 embedded in a fixed support 70.
  • the opposite end of the striker 62 is disposed opposite and cooperates with a stop 72 carried by the frame 34.
  • the assembly is arranged in such a way that in the attracted position of the armature 34 and of placing the disc 66 on the coil 68 there remains only a slight clearance between the stop 72 and the striker 62.
  • the winding 68 is connected to a capacitor bank 74 with the interposition of a contact 76.
  • the charging circuit of the capacitors 74 is not shown in the figures.
  • the closing of the contact 76 triggers a discharge of the capacitors 74 in the winding 68 and a Thomson repulsion of the disc 66, which drives the striker 62 in its movement.
  • a control unit 78 of the contact 76 is connected to a current transformer 56 to cause the contact 76 to close when a short-circuit current is detected by the current transformer 56.
  • the lock represented by a sliding bolt 80, interferes in the active position with the path of movement of the disc 66 to lock the latter in repulsion position corresponding to the opening of the contacts of the contactor, following a short circuit.
  • the latch 80 can be actuated from outside the housing 60 and can only come into the active position in the repulsed position of the disc 66 and the opening of the contactor. It confirms this opening and ensures the sectioning.
  • Locking in the open position can be achieved by any device other than that shown at 80, in particular by locking the pin 62.
  • An opening on short-circuit is controlled by the current transformer 56, which sees the fault and generates by means of the command 78 a closing of the contact 76.
  • the capacitors 74 discharge in the winding 68 and the disc 66 is repelled energetically by Thomson effect.
  • the striker 62 strikes the stop 72 with sufficient force to tear off the frame 34 of the cylinder head 36.
  • the movable assembly 34, 28, 22 moves rapidly in the position of opening of the contacts 18, 20, 22 by simultaneously causing the opening of the self-supply contact 44 and the de-excitation of the coil 38.
  • the spring 40 maintains the contacts 18, 20, 22 in the open position. This opening movement is ultra-rapid and occurs before any attempt to open by de-energizing the coil 38.
  • the electrodynamic action of the trigger 58 overcomes the electromagnetic attraction of the armature 34.
  • the rapid opening of the contacts 18, 20, 22 gives the contactor breaking capacity allowing it to assume the function of circuit breaker.
  • the contactor is normally closed by depressing the push button 52.
  • the electrodynamic trip device 58 can also serve as a quick remote opening command.
  • the endurance of the contactor is not affected by the rapid opening command, which intervenes only in the event of a short circuit and exceptionally.
  • the moving element 34, 28, 22 of the contactor can be locked in the open position of the contacts 18, 20, 22 by the latch 80, which engages under the repelled disc 66.
  • a spring (not shown), urging the disc 66, striker 62 in repulsed position, facilitates the engagement of the lock 80.
  • the position in which the lock 80 is pressed confirms and signals the cutting.
  • the electrodynamic trip device can be associated with a standard contactor without significant modification of the latter and that the invention is applicable to different types of contactors, in particular with remanence.
  • the invention is in no way limited to the mode of implementation more particularly described.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Push-Button Switches (AREA)
  • Protection Of Generators And Motors (AREA)

Claims (8)

1. Elektromagnetisch gesteuertes Schütz mit einem Schützblock (10) bestehend aus:
- einer ein magnetisches Joch (36) erregenden Spule (38),
- einem mit dem genannten Joch (36) zusammenwirkenden beweglichen Anker (34),
- einem an den genannten Anker (34) gebundenen Kontaktträger (28),
- einem feststehenden Kontakt (18, 20), der mit einem durch den genannten Kontaktträger (28) getragenen beweglichen Kontakt (22) zusammenarbeitet, wobei die genannten Kontakte in die Schliessstellung gebracht und gehalten werden beim Anziehen des genannten Ankers (34) durch das Joch (36), wenn die Spule (38) erregt wird,
- einer Rückholvorrichtung (40) des Ankers (34) und des Kontaktträgers (28) in die geöffnete Stellung der genannten Kontakte, bei einer Abschaltung der Spule (38),
- elektromagnetischen Mitteln zur schnellen Öffnung des beweglichen Kontaktes beim Auftreten eines Fehlers, insbesondere eines Kurzschluss-Stromes, um den Anker (34) und den Kontaktträger (28) zu versetzen gegenüber der Anziehungskraft des Ankers durch das Joch,

dadurch gekennzeichnet, dass die schnellen Öffnungsmittel einen in einem Gehäuse (60) untergebrachten elektrodynamischen Auslöser (58) aufweisen, um einen unabhängigen Block zu bilden, der dem Schützblock (10) angeschlossen werden kann, wobei der genannte Auslöser (58) besteht aus:
- einer Steuerwicklung (68),
- einer beweglichen Scheibe (66) aus leitfähigem Material, in Ruhestellung gegenüber und in geringem Abstand einer Seite der Wicklung (68) angeordnet,
- und einem mit der Scheibe (66) verbundenen Schlagbolzen (62), um mit einem dem Anker (34) und dem Kontaktträger (28) des Schützblokkes (10) zugeordneten Element (72) zusammenzuarbeiten bei Erregung der Wicklung (68) und elektrodynamischem Zurückstossen der Scheibe (66) in die Öffnungsstellung der Kontakte.
2. Schütz gemäss Anspruch 1, dadurch gekennzeichnet, dass der genannte Anker (34) in angezogener Stellung gehalten wird durch Speisung der genannten Spule (38) und dass sich ein Selbsterregungs-Hilfskontakt (44) öffnet beim Verschieben des Ankers und des Kontaktträgers in die Öffnungsstellung, um die genannte Speisung zu unterbrechen und die Öffnung zu bestätigen.
3. Schütz gemäss Anspruch 1, dadurch gekennzeichnet, dass der genannte Anker (34) in der angezogenen Stellung durch Remanenz gehalten wird.
4. Schütz gemäss irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der genannte Kontaktträger (28) in einer Gleitführung angeordnet ist und eine Kontaktbrükke (22) trägt, die mit einem Paar fester Kontakte (18, 20) zusammenarbeitet.
5. Schütz gemäss irgendeinem der vorhergehenden Ansprüche, mit einer von Hand betätigten Öffnungssteuerung durch Unterdrückung der Anziehungskraft des Ankers und Verschiebung des Ankers und des Kontaktträgers mittels der Rückholvorrichtung in die Öffnungsstellung, dadurch gekennzeichnet, dass es einen Kurzschlussstromdetektor (56) aufweist, welcher den genannten elektrodynamischen Auslöser (58) betätigt, um das Schütz unabhängig von der genannten handbetätigten Steuerung zu öffnen.
6. Mehrpoliges Schütz gemäss irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der genannte Anker (34) der genannte Kontaktträger (28) und der genannte elektrodynamische Auslöser (58) den verschiedenen Polen gemein sind.
7. Schütz gemäss irgendeinem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es ein Verriegelungsorgan (80) des genannten Ankers (34) und des genannten Kontaktträgers (28) aufweist, um letztere in einer Offnungsstellung des Schützes zu verriegeln und die Trennung zu gewährleisten.
8. Schütz gemäss Anspruch 7, dadurch gekennzeichnet, dass das genannte Verriegelungsorgan (80) mit dem genannten Schlagbolzen (62) des elektrodynamischen Auslösers (58) zusammenarbeitet.
EP80400424A 1979-04-09 1980-03-31 Schalter mit Schnellauslösung im Falle eines Fehlers Expired EP0017575B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7909123A FR2454174A1 (fr) 1979-04-09 1979-04-09 Contacteur a commande d'ouverture rapide sur defaut
FR7909123 1979-04-09

Publications (3)

Publication Number Publication Date
EP0017575A1 EP0017575A1 (de) 1980-10-15
EP0017575B1 true EP0017575B1 (de) 1983-07-20
EP0017575B2 EP0017575B2 (de) 1989-09-06

Family

ID=9224197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400424A Expired EP0017575B2 (de) 1979-04-09 1980-03-31 Schalter mit Schnellauslösung im Falle eines Fehlers

Country Status (5)

Country Link
US (1) US4292611A (de)
EP (1) EP0017575B2 (de)
JP (1) JPS55157838A (de)
DE (1) DE3064197D1 (de)
FR (1) FR2454174A1 (de)

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US8476996B2 (en) * 2010-08-31 2013-07-02 Chih-Chuan Liang Bistable switching method and latching relay using the same
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DE102012106108A1 (de) * 2012-07-06 2014-01-09 Tyco Electronics Amp Gmbh Elektrische Schaltvorrichtung und Verfahren zum Schalten selbiger mit Kontakttrennung im Sicherungsfall
JP6300157B2 (ja) * 2013-08-02 2018-03-28 パナソニックＩｐマネジメント株式会社 電磁継電器
TWM493137U (zh) 2013-08-20 2015-01-01 Chih-Chuan Liang 雙穩態繼電器與雙穩態致動器
CN106463283B (zh) * 2014-05-19 2018-12-21 Abb瑞士股份有限公司 高速限制电气开关设备
RU168428U1 (ru) * 2016-09-12 2017-02-02 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кубанский государственный аграрный университет" Магнитный пускатель
EP3444830B1 (de) * 2017-08-14 2024-04-03 ABB Schweiz AG Mechanischer verklinkungssatz für ein mittelspannungsschaltgerät
CN108231482B (zh) * 2017-12-29 2019-12-06 合肥和旭继电科技有限公司 一种耐冲击的继电器
FR3076945B1 (fr) * 2018-01-12 2020-10-16 Mersen France Sb Sas Contacteur electrique et dispositif de coupure a semi-conducteurs comprenant un tel contacteur
EP3832684B1 (de) * 2018-07-31 2024-02-14 Panasonic Intellectual Property Management Co., Ltd. Abschaltsystem
US10847333B2 (en) * 2018-09-17 2020-11-24 Siemends Industry, Inc. Circuit breakers including dual triggering devices and methods of operating same
GB2585098A (en) * 2019-06-18 2020-12-30 Eaton Intelligent Power Ltd Switch-disconnector with current detection
CN112687497B (zh) * 2020-12-15 2023-05-26 安徽凯民电力技术有限公司 一种单稳态开关
RU2757984C1 (ru) * 2021-01-11 2021-10-25 Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный аграрный университет им. И.Т. Трубилина" Магнитный пускатель переменного тока
CN113539751B (zh) * 2021-06-02 2022-03-22 中汇瑞德电子（芜湖）有限公司 一种高压直流继电器的触点监测装置
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FR2373143A1 (fr) * 1976-12-06 1978-06-30 Telemecanique Electrique Contacteur limiteur a haut pouvoir de coupure

Also Published As

Publication number Publication date
EP0017575A1 (de) 1980-10-15
JPS55157838A (en) 1980-12-08
DE3064197D1 (en) 1983-08-25
FR2454174A1 (fr) 1980-11-07
EP0017575B2 (de) 1989-09-06
US4292611A (en) 1981-09-29
FR2454174B1 (de) 1982-01-08
JPS6258095B2 (de) 1987-12-04

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