EP0589779B1 - Leitungsschutzschalter mit magnetischer Blasschleife - Google Patents

Leitungsschutzschalter mit magnetischer Blasschleife Download PDF

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Publication number
EP0589779B1
EP0589779B1 EP93402305A EP93402305A EP0589779B1 EP 0589779 B1 EP0589779 B1 EP 0589779B1 EP 93402305 A EP93402305 A EP 93402305A EP 93402305 A EP93402305 A EP 93402305A EP 0589779 B1 EP0589779 B1 EP 0589779B1
Authority
EP
European Patent Office
Prior art keywords
arm
circuit breaker
arc
section
contact component
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
EP93402305A
Other languages
English (en)
French (fr)
Other versions
EP0589779A1 (de
Inventor
Jean-Pierre Guery
Jean-Luc Mertz
Jacques Olifant
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
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 EP0589779A1 publication Critical patent/EP0589779A1/de
Application granted granted Critical
Publication of EP0589779B1 publication Critical patent/EP0589779B1/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
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to an electric circuit breaker with magnetic blowing comprising separable contacts respectively located on a fixed contact piece and on a movable contact piece, the latter being subject to a control mechanism in particular triggerable in the event of overcurrent.
  • Patent EP-104 981 describes a circuit breaker-contactor device, the circuit breaker part of which comprises separable mechanical contacts, these contacts being placed in series with a static switch which constitutes the contactor part of the device.
  • the contacts are associated with an arc electrode connected to a bypass circuit of the static switch.
  • the bypass circuit is designed to capture the arc as soon as the contacts open in order to protect the static switch.
  • the magnetic blowing of the arc deserves in certain cases to be accentuated to improve the quality of cutting but the measures which can be taken to improve the cutting are hardly compatible with the architecture of the device and , in particular, with the fact that the static switch is integrated in the device.
  • the object of the invention is in particular to provide in an easy manner an excellent quality of breaking in an electromagnetic circuit breaker.
  • the deflecting branch which may or may not be in the extension of the branch carrying the fixed contact, and by the presence of the ferromagnetic part between the branches of the folded part, a satisfactory magnetic blowing is obtained. of the arc even when it has crossed the isolation gap between the two parts of the fixed contact part; the deflecting branch of the fixed contact part can advantageously be connected to an auxiliary terminal of the circuit breaker, preferably accessible from the front.
  • FIG. 1 shows an electrical circuit breaker 10 which comprises, in a housing 11, an electromechanical breaking member provided with a movable contact piece 20 and with a fixed contact piece 30.
  • the movable contact piece 20 carries the actual movable contact 21 and it is connected by appropriate conductors to an upstream terminal 22 of the circuit breaker and from there by external cables to a source of low voltage electrical energy 23.
  • the term circuit breaker covers here any device of the circuit breaker type, in particular circuit breakers-contactors or other associations of a circuit breaker with another electrical device.
  • the fixed contact piece 30 comprises two parts 31, 32 electrically isolated from each other by an isolation gap 33.
  • the main part 31 of the piece 30 carries the fixed contact itself 34 and belongs to a normal path. of current C1; the auxiliary part 32 of the part 30 belongs to an auxiliary current path C2; the paths C1 then C2 are traversed by the current respectively when the contacts 21, 34 are closed and then during their transient opening phase; in the latter case, the arc generated between the contacts jumps from part 31 to part 32, crossing the insulating gap 33; the successive phases of the arc phenomenon are indicated in A1, A2, A3.
  • the respective parts 31, 32 of the fixed contact part 30 are both in the approximate shape of J and thus each comprise, for the purpose of driving the arc towards the breaking chamber 45, a neighboring branch 35, 36 of the movable contact and substantially parallel to the part 20.
  • the branches 35, 36 are traversed by a current i 31 , respectively i 32 in the opposite direction to the current i 20 in the neighboring part - arm or bridge - of movable contact 20, and this respectively in the closed state and in the transient opening phase.
  • the normal current path C1 connects the main part 31 of the fixed contact part 30 to a first downstream terminal 37 of the circuit breaker and from there by an external cable to an upstream terminal 38 of a member 40 to be protected - such as a static switch, contactor or other load -.
  • the auxiliary current path C2 connects the auxiliary part 32 of the part 30 to a second downstream terminal 37 'or auxiliary terminal of the circuit breaker; the terminal 37 'is connected by an external cable to a downstream terminal 39 of the member 40.
  • the movable contact piece 20 is connected to the upstream terminal 22 of the circuit breaker via a magnetic or magnetothermal trip member 42 which, via a mechanism 43 controls the opening of the contacts as soon as it detects an overcurrent.
  • a control button 44 also makes it possible to open and close the contacts.
  • the circuit breaker comprises for movable contact piece 20 a double-cut bridge displaceable in translation according to arrow B.
  • the deflector branch 36 of part 32 is contiguous with a cut-off chamber 45 containing arc splitting fins 46.
  • the part 31 comprises a branch 47 for connection with the terminal 37, parallel to the branch 35 which carries the fixed contact and connected to this branch by a perpendicular branch 48.
  • the part 32 comprises a branch 49 of connection with the other elements of the bypass path C2.
  • the branch 49 is parallel to the deflecting branch 36 and is connected to it by a fold or a perpendicular branch 50 obtained by folding.
  • An air space is provided or an insulating part 51, for example a thin insulating layer, can be inserted between the branches 36, 49, as well as a ferromagnetic part 52 aimed at improving the magnetic induction produced by the current in the branch 36.
  • an air space or a dielectric layer 53 Between the branches 47,49, there is an air space or a dielectric layer 53.
  • the branch 35 of the part 31 which carries the fixed contact enters an opening 54 of the deflecting branch 36 of the part 32.
  • An insulating layer 55 is interposed near the edge of the opening between the branches 35.36.
  • the circuit breaker shown operates as follows. It is assumed that initially the contacts are closed, the current passing through the path C1. When an overcurrent is detected by the magnetothermal member 42, the latter reacts and the mechanism 43 controls the opening of the contacts. The arc which appears between the contacts 21,34 (state A1) moves to the right (figure 1) and skips the insulating interval 33 (state A2). The opening current then follows the bypass path C2; as it flows in the deflecting branch 36 in the opposite direction to its path in the movable contact piece 20 (state A3), this results in a magnetic induction which tends to continue blowing the arc to the right (FIG. 1 ) and therefore to the fractionation fins.
  • FIG. 6 shows an example of association of the circuit breaker 10 with a contactor 40.
  • the contactor 40 comprises a switch 56 of the separable contact type or of the static type controlled by a member 57 of the electromagnetic or respectively electronic type.
  • the control member 57 is connected to control terminals A1, A2.
  • the downstream terminals 37 and 37 'of the circuit breaker are wired respectively to the upstream terminals 38 and downstream 39 of the contactor.
  • the terminals 22, 37, 37 ′, 38, 39 of the same pole are accessible frontally and advantageously located in a plane P perpendicular to the front faces of the circuit breaker and of the contactor, which allows the user to benefit from the good breaker cut-out quality a variable gauge contactor easy to connect to the circuit breaker.
  • the circuit breaker is associated with a contactor 40.
  • the circuit breaker comprises a movable contact bridge 20 which has two contacts 20a, 20b to cooperate with respective fixed contacts 34a, 34b carried by parts of fixed contact 30a, 30b.
  • Each of these comprises two parts 31a; 31b and 32a; 32b in the form of J, contiguous and mutually isolated by an insulating gap 33a; 33b, in the vicinity of cooling and arc splitting fins 46a, 46b.
  • the main downstream 37 and auxiliary 37 'downstream terminals are respectively connected to the parts 31b, 32b of the fixed part 30b and are wired, as described above, to the terminals 38, 39 of the contactor.
  • the parts 31a, 32a of the fixed part 30a are connected to the main upstream terminal 22 and respectively to an auxiliary upstream terminal 22 '.
  • a current limiting impedance Z is disposed between the upstream terminals 22,22 '. An opening of the contacts following a short circuit therefore causes the transient commissioning, that is to say during the duration of the arcing phenomenon, of the circuit terminal 22 - impedance Z - terminal 22 ', and therefore a limitation arc current.
  • the device can be composed of a circuit breaker 10 to which the contactor 40 is connected by plugging in according to arrow F (FIG. 8).
  • the contactor 40 has an upstream pin 38 and a downstream pin 39 connectable to respective downstream terminals 57,58.
  • the terminal 58 is connected on the one hand to a terminal 50 for connection with the charging circuit, on the other hand to the part 32 of the fixed contact part 30 by the path C2.
  • Terminal 57 is connected to part 31 by the auxiliary path C1.
  • the invention is applicable to single or double break circuit breakers, which can be combined with electromechanical or static contactors.

Landscapes

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

Claims (6)

  1. Leitungsschutzschalter mit magnetischer Blasschleife, mit:
    - mindestens einem festen Kontakt und einem beweglichen Kontakt, die trennbar und jeweils auf einem festen Kontaktteil und einem beweglichen Kontaktteil angeordnet sind, wobei das bewegliche Kontaktteil mit einem Steuermechanismus verbunden ist, der insbesondere bei Überlast ausgelöst werden kann,
    - wobei das feste Kontaktteil mit einem zu schützenden elektrischen Organ (40) verbunden ist und einen zweiten leitenden Teil (32) umfaßt, der an einen ersten, mit dem festen Kontakt (34) verbundenen, leitenden Teil (31) anschließt, der jedoch elektrisch von ihm durch ein Trennintervall (33) des Bogensprungs getrennt ist, und das einen an eine Abschaltkammer anschließenden Bogenablenkungszweig (36) umfaßt,
       dadurch gekennzeichnet, daß:
    - der erste leitende Teil (31) in der Nachbarschaft des beweglichen Kontaktteils (20) einen Zweig (35) umfaßt, der so angeordnet ist, daß der Strom bei geschlossenen Kontakten in entgegengesetzter Richtung in diesem Zweig und im beweglichen Kontaktteil fließt,
    - der Bogenablenkungszweig (36) so angeordnet ist, daß der Strom bei Öffnen der Kontakte in entgegengesetzter Richtung in diesem Zweig und im beweglichen Kontaktteil (20) fließt,
    - der Zweig (35) des ersten leitenden Teils und der Bogenablenkungszweig (36) des zweiten leitenden Teils etwa parallel zum beweglichen Kontaktteil angeordnet sind,
    - der zweite Teil (32) des festen Kontaktteils (30) von einem gefalzten Teil gebildet wird, dessen Falz (50) sich in der Nachbarschaft des Bogensprungintervalls (33) befindet und den Bogenablenkungszweig (36) mit einem Anschlußzweig (49) zum zu schützenden Organ (40) verbindet,
    - zwischen dem Ablenkungszweig (36) und dem Anschlußzweig (49) ein ferromagnetisches Teil (52) angeordnet ist.
  2. Leitungsschutzschalter nach Anspruch 1, dadurch gekennzeichnet, daß zwischen dem Ablenkungszweig (36) und dem Anschlußzweig (49) eine Isolierschicht (51) angeordnet ist.
  3. Leitungsschutzschalter nach Anspruch 1, dadurch gekennzeichnet, daß der erste Teil (31) des festen Kontaktteils (30) ein Ende aufweist, das in eine Öffnung (54) des Ablenkungszweigs (36) des zweiten Teils (32) des festen Kontaktteils eingeführt ist, mit Einlage eines elektrischen Isolierelements (55) zwischen dem Ende und dem Ablenkungszweig in der Nähe des Öffnungsrandes.
  4. Leitungsschutzschalter nach Anspruch 1, dadurch gekennzeichnet, daß der Bogenablenkungszweig (36) ein J-förmiges Teil ist, das direkt an eine Hilfsklemme (37') des Überlastschalters angeschlossen ist.
  5. Leitungsschutzschalter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß er Pole mit doppelter Abschaltung umfaßt.
  6. Leitungsschutzschalter nach Anspruch 5, dadurch gekennzeichnet, daß er auf der vorgelagerten Seite ein festes Kontaktteil (30a) umfaßt, das mit zwei leitenden Teilen (31a, 32a) ausgerüstet ist, die durch ein Trennintervall (33a) des Bogensprungs voneinander getrennt sind und über eine Begrenzungsimpedanz (Z) des Bogenstroms zusammengeschaltet werden können.
EP93402305A 1992-09-25 1993-09-21 Leitungsschutzschalter mit magnetischer Blasschleife Expired - Lifetime EP0589779B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9211569 1992-09-25
FR9211569A FR2696273B1 (fr) 1992-09-25 1992-09-25 Disjoncteur électrique à soufflage magnétique.

Publications (2)

Publication Number Publication Date
EP0589779A1 EP0589779A1 (de) 1994-03-30
EP0589779B1 true EP0589779B1 (de) 1997-12-17

Family

ID=9433985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402305A Expired - Lifetime EP0589779B1 (de) 1992-09-25 1993-09-21 Leitungsschutzschalter mit magnetischer Blasschleife

Country Status (9)

Country Link
US (1) US5373273A (de)
EP (1) EP0589779B1 (de)
JP (1) JPH06236728A (de)
KR (1) KR940007918A (de)
CN (1) CN1032338C (de)
DE (1) DE69315786T2 (de)
ES (1) ES2110582T3 (de)
FR (1) FR2696273B1 (de)
TW (1) TW238396B (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2714520B1 (fr) * 1993-12-24 1996-01-19 Telemecanique Appareil électrique interrupteur à contacts séparables.
KR100367146B1 (ko) * 1995-05-23 2003-04-10 삼성종합화학주식회사 항균도마용마스터배치를이용한항균도마의제조방법
US5614881A (en) * 1995-08-11 1997-03-25 General Electric Company Current limiting device
FR2742916B1 (fr) * 1995-12-21 1998-01-16 Schneider Electric Sa Dispositif electrique a commutation d'arc
US5859578A (en) * 1997-03-04 1999-01-12 General Electric Company Current limiting shunt for current limiting circuit breakers
KR100300101B1 (ko) * 1997-12-31 2001-10-27 김진찬 불량 채널모뎀 알림기능을 갖는 위성통신시스템
US6128168A (en) 1998-01-14 2000-10-03 General Electric Company Circuit breaker with improved arc interruption function
US6144540A (en) * 1999-03-09 2000-11-07 General Electric Company Current suppressing circuit breaker unit for inductive motor protection
US6157286A (en) * 1999-04-05 2000-12-05 General Electric Company High voltage current limiting device
US6392512B1 (en) * 1999-11-05 2002-05-21 Siemens Energy & Automation, Inc. Stationary line bus assembly
US7551050B2 (en) * 2006-09-22 2009-06-23 Rockwell Automation Technologies, Inc. Contactor assembly with arc steering system
US7716816B2 (en) * 2006-09-22 2010-05-18 Rockwell Automation Technologies, Inc. Method of manufacturing a switch assembly
WO2013000483A1 (en) * 2011-06-30 2013-01-03 Vestas Wind Systems A/S A circuit breaker and method for interrupting large direct currents
JP5585550B2 (ja) 2011-07-18 2014-09-10 アンデン株式会社 継電器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2378344A1 (fr) * 1977-01-25 1978-08-18 Telemecanique Electrique Piece de soufflage
US4086460A (en) * 1977-03-17 1978-04-25 General Electric Company Circuit breaker having improved line strap construction
KR860002080B1 (ko) * 1982-01-28 1986-11-24 카다야마히도 하지로 전력 개폐장치
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
DE3337515A1 (de) * 1983-10-14 1985-05-02 Siemens AG, 1000 Berlin und 8000 München Schaltstueck fuer elektrische schaltgeraete
US4654491A (en) * 1986-03-03 1987-03-31 Westinghouse Electric Corp. Circuit breaker with contact support and arc runner
KR900007273B1 (ko) * 1986-09-16 1990-10-06 미쓰비시전기 주식회사 회로 차단기
US4973805A (en) * 1989-04-03 1990-11-27 Westinghouse Electric Corp. Arc runner, containment support assembly
FR2652199B1 (fr) * 1989-09-19 1994-05-13 Telemecanique Dispositif interrupteur avec boucles de courant assistant le developpement de l'arc.

Also Published As

Publication number Publication date
CN1032338C (zh) 1996-07-17
DE69315786D1 (de) 1998-01-29
FR2696273B1 (fr) 1994-11-18
JPH06236728A (ja) 1994-08-23
EP0589779A1 (de) 1994-03-30
TW238396B (de) 1995-01-11
ES2110582T3 (es) 1998-02-16
DE69315786T2 (de) 1998-04-09
KR940007918A (ko) 1994-04-28
US5373273A (en) 1994-12-13
FR2696273A1 (fr) 1994-04-01
CN1084670A (zh) 1994-03-30

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