EP0649157B1 - Elektrischer Schutzvorrichtung mit Lastschalter und Effektor - Google Patents

Elektrischer Schutzvorrichtung mit Lastschalter und Effektor Download PDF

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Publication number
EP0649157B1
EP0649157B1 EP94410088A EP94410088A EP0649157B1 EP 0649157 B1 EP0649157 B1 EP 0649157B1 EP 94410088 A EP94410088 A EP 94410088A EP 94410088 A EP94410088 A EP 94410088A EP 0649157 B1 EP0649157 B1 EP 0649157B1
Authority
EP
European Patent Office
Prior art keywords
effector
circuit
connection
electrical protection
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
EP94410088A
Other languages
English (en)
French (fr)
Other versions
EP0649157A1 (de
Inventor
François Reynaud
Bernard Lepretre
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 Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP0649157A1 publication Critical patent/EP0649157A1/de
Application granted granted Critical
Publication of EP0649157B1 publication Critical patent/EP0649157B1/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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/121—Protection of release mechanisms
    • 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
    • H01H2089/065—Coordination between protection and remote control, e.g. protection job repartition, mutual assistance or monitoring
    • 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
    • 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
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
    • H01H9/465—Shunt circuit closed by transferring the arc onto an auxiliary electrode

Definitions

  • the effector is formed by a static switch connected in series with the contacts of the circuit breaker.
  • the switch is connected between the fixed contact and the input terminal, while the movable contact is connected to the output terminal via the thermal release, and the electromagnetic release.
  • the switch remains energized in the open state of the circuit breaker contacts, and the triggers, including the electromagnetic trip coil, are shunted when the arc switches over the two guide horns of the arc extinguishing chamber.
  • the switch is connected between the triggers and the output terminal, and the two guide horns are respectively connected to the terminal input and output terminal.
  • the object of the invention is to improve the protection and safety of a switchgear circuit breaker and effector.
  • the switching electrode is in electrical connection with one end of the electromagnetic trip control coil, the other end being connected to the output terminal so as to maintain the excitation of the coil during the shunting phase of the effector.
  • the movable contact In the case of an electromagnetic trip device with striker, the movable contact remains blocked in the open position by the striker throughout the fault elimination phase until the arc goes out.
  • an electrical protection device 10 is formed by the association of a circuit breaker 12 with a remotely controlled effector 14.
  • the circuit breaker 12 has a first switch circuit 16 electrically connected in series with a second circuit switch 18 of the effector 14.
  • the first switch circuit 16 of the circuit breaker comprises a fixed contact 20 cooperating with a movable contact 22, which is connected by a braid 24 to a bimetallic strip of a trip device 26.
  • the foot of the bimetallic strip is connected to an input terminal 28, and to a first arc guide horn 30.
  • the output terminal 32 is connected to one of the ends 34b of a coil 34 of an electromagnetic trip device 36, the other end 34a being at the potential a switching electrode 38, and a second arc guiding horn 40.
  • the fixed contact 20 is electrically isolated from the coil 34 and the electrode 38 by an interval 42.
  • the electromagnetic trip device 36 is provided with a trigger 44 arranged to trigger the mechanism 43 during the appearance of a short-circuit current, and to play the role of a striker propelling the movable contact 22 to the open position.
  • the two horns 30, 40 frame a arc quenching chamber 45 which is formed by a stack of deionization sheets.
  • the second switch circuit 18 of the effector 14 is connected to a pair of terminals. connection 46, 48 so as to be electrically connected to the fixed contact 20 by a first connection area 50, and at the end 34b of the coil 34 by a second area 52 of connection.
  • the actuation of the contacts of the second switch circuit 18 is operated by a control member 54, for example of the electromagnet type connected to terminals 56, 58 control auxiliaries.
  • the two areas 50, 52 are respectively connected to the connection terminals 46, 48 of the effector 14 by a pair of conductors 60, 62.
  • the effector 14 can be constituted either by a remote control switch or by a contactor electromechanical or static, or by any other electrical endurance device, with the placing its second switch circuit 18 in series in the main circuit of the circuit breaker 12.
  • the current enters the apparatus 10 via input terminal 28, flows successively through the bimetal of the trip unit thermal 26, contacts 22, 20 of the first switch circuit 16, the first range 50 link, the conductor 60, the contacts of the second switch circuit 18, the conductor 62, the second connection area 52, and then crosses the coil 34 of the release electromagnetic 36 to exit the apparatus 10 by the output terminal 32.
  • each control pulse applied to terminals 56, 58 causes a change of state of the second switch circuit 18. If the effector 14 is constituted by a contactor, the second switch circuit 18 is permanently in the closed state in presence of a maintained control signal. The contactor opens automatically that the control signal disappears.
  • the appearance of a short-circuit or overcurrent current downstream of the output terminal 32 causes the automatic triggering of mechanism 43 by the action of the trigger electromagnetic 36 or thermal trip 26 of circuit breaker 12.
  • the arc resulting from the separation of the contacts 20, 22 develops in the arc-forming chamber, and migrates quickly towards the switching electrode 38, so as to bypass the effector 14 for the protect from the effects of the fault current.
  • the coil 34 of the electromagnetic trip device 36 continues to be supplied by the arc current following the shunting of the effector 14, and this, throughout the fault elimination phase.
  • the striker of the triggering member 44 of the electromagnetic trigger 36 maintains then the movable contact 22 in the open state until the arc extinguishes.
  • Figure 3 shows the circuit breaker 12 in the closed position.
  • the same numbers of marks will be used to designate parts similar to those of figure 2.
  • the contact mobile 22 is carried by a contact arm 64 pivotally mounted on an axis 66.
  • the ranges 50, 52 of the effector 14 are connected respectively to the fixed contact 20, and to the end 34a of the coil 34 which is at the potential of the switching electrode 38.
  • the presence of the isolation interval 42 guarantees the holding of the isolation between the input and the output of the effector 14 when the contacts 20, 22 of the first switch circuit 16 are are in the closed position, while the second switch circuit 18 is in the open state.
  • FIG. 5 shows the development of the arc A1 B1 in the formation chamber 68, just before its entry in the extinguishing chamber 45. Note that the coil 34 of the trigger electromagnetic remains supplied by the fault current as long as the arc moves along the switching electrode 38.
  • the interval isolation 42 is composed of a first air space 70 arranged between the lower part of the fixed contact 20 and the electrode 38 shaped as a half-loop, and of a wall 72 intermediate in rigid insulating material serving as a support for the fixed contact 20.
  • the wall 72 is made by molding with the plastic housing 74 of the circuit breaker 12, and extends opposite of the movable contact 22 between the fixed contact 20 and a conductive branch 76 connecting the electrode 38 at the end 34a of the coil 34.
  • the shape of the electrode 38 is adapted to favor the migration of the arc root during the fault shutdown phase, while ensuring dielectric strength when the circuit breaker is closed.
  • the electrode 38 is equipped with a straight face 78 disposed in the extension of the plane of the patch of the fixed contact 20.
  • the face 78 can also be curved to project from the plane of the fixed contact 20.
  • the variant of FIG. 7 relates to a bipolar apparatus 100 formed by the association of a unipolar and neutral circuit breaker 102 and a bipolar effector 104.
  • the phase circuit L with its triggers 126 and 136 is identical to the diagram in FIG. 2, the marks of the same parts being assigned a number 1 at the hundred.
  • the operation of the phase circuit L of the apparatus 100 has the same advantages as that described above.
  • the neutral circuit N the marks of similar parts are assigned a number 2 at the hundred.
  • the circuit breaker part of the neutral circuit N is not protected, and is therefore devoid of trip devices.
  • the input terminal 228 is connected by the braid 224 to the movable contact 222, and the guide horn assembly 240 and the electrode 238 is connected directly to the output terminal 232.
  • connection pad 250 is connected to the fixed contact 220, while the other connection pad 252 is connected to the guide horn 240.
  • the effector 214 is connected in series between the fixed contact 220 and the switching electrode 238. The two parts 114, 214 of the bipolar effector 104 are thus de-energized when the contacts 120, 220; 122, 222 of the circuit breaker 102 are open.

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Thermally Actuated Switches (AREA)

Claims (7)

  1. Elektrisches Schutzorgan (10, 100), das als Kombination aus einem Leistungsschalter (12, 102) und einem Wirkglied (14, 104) ausgebildet ist, wobei
    der Leistungsschalter (12, 102) einen ersten Unterbrecherkreis (16) mit jeweils einem feststehenden und einem beweglichen Kontakt (20, 22; 120, 122; 220, 222), einen über einen elektromagnetischen Auslöser (36, 136) mit Steuerspule (34, 134) sowie einen thermischen Auslöser (26, 126) angesteuerten Schaltmechanismus (43), ein erstes und ein zweites Lichtbogenführungshorn (30, 40; 130, 140), die mit Auffangelektrode (38, 138, 238) in der Nähe der Kontakte des ersten Unterbrecherkreises (16) angeordnet sind, eine in den Stromkreis der Auslöser integrierte Lichtbogenlöschkammer (45, 145), eine Eingangsklemme (28, 128, 228) sowie eine Ausgangsklemme (32, 132, 232) umfaßt und
    das Wirkglied (14, 104) einen zweiten Unterbrecherkreis (18, 118, 218) umfaßt, der so ausgelegt ist, daß er eine Reihenschaltung mit dem genannten ersten Unterbrecherstromkreis bildet, wenn sich dieser im Einschaltzustand befindet, und bei fehlerbedingter Auslösung des Schaltmechanismus' (43) durch Umlenkung des Lichtbogens aufdie Elektrode (38, 138, 238) automatisch kurzgeschlossen wird,
    dadurch gekennzeichnet, daß
    das Wirkglied (14, 104) ein erstes Verbindungsstück (50, 150, 250) zum Anschluß an den feststehenden Kontakt (20, 120, 220) und ein zweites Verbindungsstück (52, 152, 252) zum Anschluß an das zweite Lichtbogenführungshorn (40, 140, 240) sowie an die Auffangelektrode (38, 138, 238) umfaßt,
    das erste Lichtbogenführungshorn (30, 130, 230) mit dem beweglichen Kontakt (22, 122, 222) und der Eingangsklemme (28, 128, 228) verbunden ist,
    und eine Trennstrecke (42) zwischen dem feststehenden Kontakt (20, 120, 220) und der Auffangelektrode (38, 138, 238) ausgebildet ist.
  2. Elektrisches Schutzorgan (10, 100) nach Anspruch 1, dadurch gekennzeichnet, daß die Auffangelektrode (38, 138) elektrisch mit einem der Enden (34a) der Steuerspule (34, 134) des elektromagnetischen Auslösers (36, 136) und deren anderes Ende (34b) mit der Ausgangsklemme (32, 132) verbunden ist, derart daß die Erregung der Spule (34, 134) bei kurzgeschlossenem Wirkglied (14, 104) aufrecht erhalten bleibt.
  3. Elektrisches Schutzorgan (10, 100) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Wirkglied (14, 104) ein an Hilfsklemmen (56, 58) angeschossenes Antriebsorgan (54) mit Elektromagnet umfaßt und der zweite Unterbrecherkreis (18, 118, 218) mit zwei Anschlußklemmen (46, 48; 146, 148; 246, 248) verbunden ist, die ihrerseits mit dem ersten Verbindungsstück (50, 150, 250) bzw. mit dem zweiten Verbindungsstück (52, 152, 252) verbunden sind.
  4. Elektrisches Schutzorgan (10, 100) nach irgendeinem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwischen den beweglichen Kontakt (22, 122) und die Eingangsklemme (28, 128) ein thermischer Bimetallauslöser (26, 126) geschaltet ist, wobei der Fußpunkt des Bimetalls mit dem ersten Lichtbogenführungshorn (30, 130) verbunden ist.
  5. Elektrisches Schutzorgan (100) nach einem der Ansprüche 1 bis 4, bestehend aus einem einpoligen Leistungsschalter mit Neutralleiter (102) sowie einem zweipoligen Wirkglied (104), dadurch gekennzeichnet, daß die Auffangelektrode (238) des Neutralleiterkreises N über das zweite Lichtbogenführungshorn (240), an das auch das zweite Verbindungsstück (252) des Wirkglieds (214, 104) angeschlossen ist, mit der Ausgangsklemme (232) verbunden ist.
  6. Elektrisches Schutzorgan nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Wirkglied (14, 104) als Stromstoßrelais ausgebildet ist.
  7. Elektrisches Schutzorgan nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Wirkglied (14, 104) als elektromagnetisches oder elektronisches Schütz ausgebildet ist.
EP94410088A 1993-10-15 1994-10-11 Elektrischer Schutzvorrichtung mit Lastschalter und Effektor Expired - Lifetime EP0649157B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9312406A FR2711270B1 (fr) 1993-10-15 1993-10-15 Appareillage de protection électrique à disjoncteur et effecteur.
FR9312406 1993-10-15

Publications (2)

Publication Number Publication Date
EP0649157A1 EP0649157A1 (de) 1995-04-19
EP0649157B1 true EP0649157B1 (de) 1999-12-15

Family

ID=9451955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94410088A Expired - Lifetime EP0649157B1 (de) 1993-10-15 1994-10-11 Elektrischer Schutzvorrichtung mit Lastschalter und Effektor

Country Status (6)

Country Link
US (1) US5539365A (de)
EP (1) EP0649157B1 (de)
CN (1) CN1045686C (de)
DE (1) DE69422134T2 (de)
ES (1) ES2140517T3 (de)
FR (1) FR2711270B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753001B1 (fr) * 1996-09-04 1998-11-20 Legrand Sa Interrupteur commande et protege, tel que telerupteur ou contacteur
KR19980054544U (ko) * 1996-12-31 1998-10-07 이종수 배선용 차단기의 소호장치
FR2832559B1 (fr) * 2001-11-16 2004-01-16 Schneider Electric Ind Sa Module de commande et de protection d'un appareil interrupteur
DE10324390A1 (de) * 2003-05-30 2004-12-23 Abb Patent Gmbh Elektrische Auslöseeinrichtung für einen elektrischen Schalter
CN102347177A (zh) * 2011-09-19 2012-02-08 广东天富电气集团有限公司 一种热磁型断路器的工作方法
CN111919276A (zh) * 2018-03-28 2020-11-10 松下知识产权经营株式会社 电路切断装置
CN111755299B (zh) * 2019-03-29 2022-07-05 Ls产电株式会社 配线用断路器的灭弧装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533363B1 (fr) * 1982-09-17 1985-11-08 Merlin Gerin Disjoncteur electrique a courant alternatif equipe d'un declencheur magnetothermique et d'un organe de commutation statique a telecommande
US4616206A (en) * 1984-09-07 1986-10-07 Eaton Corporation Circuit breaker and shunt trip apparatus combined within single pole device
US4654614A (en) * 1985-03-04 1987-03-31 Westinghouse Electric Corp. Current limiting solenoid operated circuit breaker
FR2581477B1 (fr) * 1985-05-06 1989-01-13 Telemecanique Electrique Appareil interrupteur protege contre les courants de court-circuit
FR2584529B1 (fr) * 1985-07-04 1995-01-06 Merlin Gerin Disjoncteur-contacteur electrique, notamment pour des batteries de condensateurs

Also Published As

Publication number Publication date
CN1106162A (zh) 1995-08-02
FR2711270A1 (fr) 1995-04-21
FR2711270B1 (fr) 1995-11-24
DE69422134D1 (de) 2000-01-20
EP0649157A1 (de) 1995-04-19
DE69422134T2 (de) 2000-06-15
ES2140517T3 (es) 2000-03-01
CN1045686C (zh) 1999-10-13
US5539365A (en) 1996-07-23

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