EP0848404A1 - Selektives Auslöseblock für Mehrpoliger Leistungsschalter - Google Patents

Selektives Auslöseblock für Mehrpoliger Leistungsschalter Download PDF

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Publication number
EP0848404A1
EP0848404A1 EP97410137A EP97410137A EP0848404A1 EP 0848404 A1 EP0848404 A1 EP 0848404A1 EP 97410137 A EP97410137 A EP 97410137A EP 97410137 A EP97410137 A EP 97410137A EP 0848404 A1 EP0848404 A1 EP 0848404A1
Authority
EP
European Patent Office
Prior art keywords
armature
magnetic
movable
trigger block
block according
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
EP97410137A
Other languages
English (en)
French (fr)
Other versions
EP0848404B1 (de
Inventor
Serge Terpend
Pierre Batteux
Olivier Dujeu
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 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 Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0848404A1 publication Critical patent/EP0848404A1/de
Application granted granted Critical
Publication of EP0848404B1 publication Critical patent/EP0848404B1/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
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/34—Electromagnetic mechanisms having two or more armatures controlled by a common winding

Definitions

  • the timing means adapted to a chronometric selectivity of the protection are generally formed by inertial devices making use of at least one flyweight.
  • the counterweight is mounted on a lever control articulated on an axis different from that of the mobile magnetic armature.
  • the assembly and adjustment of such a device remain complicated.
  • the object of the invention is to provide a selective trigger block for simplified construction, and compact.
  • the trigger block according to the invention is characterized in that the means for time delay comprise a damping member mounted on the magnetic armature mobile, and likely to be in an inactive state up to a position non-triggering intermediate during the attraction of the magnetic armature movable by pole pieces of the fixed magnetic frame during a first stroke, the transition to the active state resulting from a deformation of the damping member during a second stroke of the movable armature between the intermediate position, and the final position of attraction causing the tripping of the circuit breaker.
  • the means for time delay comprise a damping member mounted on the magnetic armature mobile, and likely to be in an inactive state up to a position non-triggering intermediate during the attraction of the magnetic armature movable by pole pieces of the fixed magnetic frame during a first stroke, the transition to the active state resulting from a deformation of the damping member during a second stroke of the movable armature between the intermediate position, and the final position of attraction causing the tripping of the circuit breaker.
  • the mobile magnetic armature is mounted at pivoting on a stirrup fixed to a conductor, and which the damping member comprises a thin metal blade, arranged in a gap between the frame mobile and said bracket.
  • the damper blade includes a base clipped onto a projection on the caliper, and a upper part cooperating with a drive member of the magnetic armature mobile.
  • the fixed bracket is equipped with lateral tabs arranged to define the rest position of the movable magnetic armature, and said blade housing interval.
  • the elastic return member of the movable frame is advantageously formed by a compression spring arranged on the opposite side of the interval between the base of the stirrup, and a flange of the frame.
  • the mounting of the selective magnetic trip unit is particularly simplified, being given that the caliper, the damper blade, the movable magnetic frame, and the compression spring constitutes a pre-assembled sub-assembly, and fixed by a screw on the conductor.
  • a trip unit 10 for an electric circuit breaker multipolar (not shown) comprises an insulating housing 11 containing means 12 control of the intensity of the current passing through each pole, and a bar of trigger 14 common.
  • An energy accumulator mechanism 16 with striker cooperates with the trigger bar 14 to cause the unlocking of the circuit breaker control mechanism in the event of detection of a short-circuit current by the trigger block 10.
  • the trigger bar 14 is mounted at limited rotation in bearings of the housing 11, and is movable between a position army allowing the closing of the circuit breaker, and a triggered position causing automatic opening of circuit breaker contacts after release of the mechanism energy store 16.
  • control means for each pole include a selective magnetic trigger 18 composed of a fixed magnetic armature 20 in U shape arranged opposite a movable magnetic frame 22 also in U-shaped.
  • the fixed magnetic frame 20 is crossed by a conductor 24 in form of bar in which the current to be monitored flows.
  • Driver 24 includes a pair of connection pads 26, 28 at its opposite ends, and an intermediate part folded into a V so as to form an obtuse angle.
  • Branch horizontal 24a of the conductor 24 is fixed by a screw 30 to the base of the housing 11 insulator, while the other inclined branch 24b is applied against the bottom and at the interior of the fixed magnetic frame 20.
  • conductor 24 serves also a driver with a bimetallic strip (not shown) of a thermal trip device, which is not part of the present invention.
  • the movable magnetic frame 22 is mounted with limited pivoting on the base 32 a fixed metal stirrup 34, which is secured to the branch 24a of the conductor 24 by screw 30.
  • a compression spring 36 is interposed between the base 32 and a rim 38 of the mobile magnetic armature 22, and urges the latter towards a position apart from rest so as to provide a maximum air gap 40 between the movable frame 22 and the pole faces of the fixed frame 20.
  • the movable frame 22 has two parallel legs 42,44 (see FIG. 7) provided with its lower ends of two pins 46,48 positioned in cutouts of two lateral flanges 50.52 of the stirrup 34 to constitute the pivot axis 53 of the movable frame 22.
  • the stirrup 34 is additionally equipped with a pair of lateral tabs 54 against which the movable armature 22 comes into engagement in the separated position, so as to provide an interval 56 (FIGS. 3 and 6) for housing an organ shock absorber 58.
  • the damping member 58 comprises a thin metal blade, the base is clipped onto a projection 60 of the stirrup 34, while the upper part of the blade passes through a strap 62 of the movable frame 22.
  • the base of the blade has a width slightly greater than the transverse spacing of the flanges 50, 52 of the stirrup 34.
  • the movable frame 22, the spring 36, and the blade 58 are mounted on the bracket 34 so as to constitute a pre-assembled sub-assembly ( Figure 6) and ready to be incorporated in the housing 11.
  • the trigger bar 14 is located above the magnetic triggers 18 selective of the three poles, and includes actuation levers 64 likely to be driven individually by the movable magnetic armature 22 of each trigger when it is moved by magnetic attraction against the faces of the fixed armature 20.
  • a hooking lever 66 also equips the bar trigger 14 to lock or release the accumulator mechanism of energy 16 respectively in the armed position, and in the triggered position.
  • the operation of the selective magnetic trigger 18 of each pole is the following :
  • FIG. 3 shows the magnetic trigger 18 in the inactive state in the absence of network fault.
  • the return force of the spring 36 is permanently greater than the magnetic attraction force in the air gap 40 due to the passage of the nominal current in the conductor 24.
  • the movable magnetic armature 22 is in abutment against the legs 54 of the fixed stirrup 34, and the lever 64 is separated from the movable frame 22 by a predetermined distance.
  • the trigger bar 14 remains immobilized in position armed by a bias spring (not shown), and the lever hooking 66 locks the energy accumulator mechanism 16.
  • the compression spring 36 extends substantially in a direction perpendicular to the horizontal branch 24a of the conductor 24, and the blade of the damper 58 is located in the meantime 56 in an undeformed state, and placed against the magnetic frame mobile 22.
  • the blade damper 58 acts as a brake preventing displacement of the movable frame 22 beyond the intermediate position.
  • the triggering of downstream circuit breaker thus keeps the upstream circuit breaker closed, the upstream circuit breaker being that associated with the selective magnetic trip 18.
  • the displacement of the armature mobile 22 from the rest position to the intermediate position intervenes as soon as the current exceeds a threshold corresponding to the setting of spring 36.
  • the deformation of the blade of the shock absorber 58 generates a time delay before the effective trip of the circuit breaker associated with the trip unit magnetic 18 selective. This time delay by amortization depends on the intensity and the duration of the short-circuit current, and ensures total selectivity of the protection.
  • FIGS. 9 and 10 a spring of compression 70 is secured to the upper end of the magnetic frame movable 22, so as to abut against the conductor 24 when the armature mobile 22 is in the intermediate position. Triggering is possible during the attraction of the movable frame 22 against the pole faces of the fixed frame 20, and after compression of the spring 70.
  • the damper is formed by a spring of torsion 72 mounted on the pivot axis 53 of the movable magnetic armature 22.
  • the spring 72 remains inactive up to the intermediate position of the movable armature 22, and is then bandaged during the continued movement to the final position of attraction.

Landscapes

  • Breakers (AREA)
  • Braking Arrangements (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Electromagnets (AREA)
EP97410137A 1996-12-13 1997-12-04 Selektives Auslöseblock für Mehrpoliger Leistungsschalter Expired - Lifetime EP0848404B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9615607A FR2757309B1 (fr) 1996-12-13 1996-12-13 Bloc de declenchement selectif pour un disjoncteur multipolaire
FR9615607 1996-12-13

Publications (2)

Publication Number Publication Date
EP0848404A1 true EP0848404A1 (de) 1998-06-17
EP0848404B1 EP0848404B1 (de) 2004-09-22

Family

ID=9498832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97410137A Expired - Lifetime EP0848404B1 (de) 1996-12-13 1997-12-04 Selektives Auslöseblock für Mehrpoliger Leistungsschalter

Country Status (6)

Country Link
US (1) US5831499A (de)
EP (1) EP0848404B1 (de)
CN (1) CN1174453C (de)
DE (1) DE69730806T2 (de)
ES (1) ES2227659T3 (de)
FR (1) FR2757309B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007144050A1 (de) * 2006-06-14 2007-12-21 Moeller Gmbh Thermischer und/oder magnetischer überlastauslöser
WO2007144051A1 (de) * 2006-06-14 2007-12-21 Moeller Gmbh Überlastauslöser für ein mehrpoliges elektrisches schaltgerät
EP2733720A1 (de) 2012-11-19 2014-05-21 Schneider Electric Industries SAS Thermomagnetischer Auslöser zur Auslösung eines Mehrphasen-Überlastschalters

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6208228B1 (en) * 2000-02-16 2001-03-27 Eaton Corporation Circuit interrupter with improved trip bar assembly accomodating internal space constraints
PL357559A1 (en) * 2000-03-17 2004-07-26 Aeg Niederspannungstechnik Gmbh & Co, Kg Selective tripping device for a circuit breaker
US7130173B2 (en) * 2003-07-08 2006-10-31 Square D Company Direct force armature for a trip assembly
US6850135B1 (en) * 2003-08-01 2005-02-01 Gaton Corporation Circuit breaker trip unit employing a reset overtravel compensating rotary trip lever
US20090115556A1 (en) * 2007-11-05 2009-05-07 Square D Company Divided adjustable armature for a circuit breaker
DE102009007586A1 (de) * 2009-02-05 2010-08-19 Saia-Burgess Dresden Gmbh Auslösevorrichtung, insbesondere für Leistungsschalter
KR101427800B1 (ko) * 2010-12-23 2014-08-08 엘에스산전 주식회사 배선용 차단기의 트립유닛
US8542083B2 (en) * 2011-09-23 2013-09-24 Eaton Corporation Collapsible mechanism for circuit breakers
DE102012200922A1 (de) * 2012-01-23 2013-07-25 Siemens Aktiengesellschaft Elektrischer Schalter
DE112013007256T5 (de) 2013-07-19 2016-04-14 General Electric Company Elektrische Schaltvorrichtung enthaltend eine einstellbare Dämpfungsanordnung
CN105513916B (zh) * 2016-01-21 2018-06-29 首瑞（天津）电气设备有限公司 用在断路器中的延时动作机构、和断路器
US9899176B2 (en) * 2016-04-07 2018-02-20 General Electric Company Self-resetting biasing devices for current limiting circuit breaker trip systems
EP3373319B1 (de) * 2017-03-09 2021-11-10 LSIS Co., Ltd. Schutzschalter mit sofortauslösemechanismus
CN118098894A (zh) * 2024-04-25 2024-05-28 浙江天正电气股份有限公司 一种电磁脱扣机构以及断路器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE699839C (de) * 1938-02-01 1940-12-07 Aeg Selbstanlasser fuer Gleich- und Wechselstrombetrieb
DE1119393B (de) * 1959-01-28 1961-12-14 Merlin Gerin Leistungsschalter mit elektromagnetischem Ausloeser und verzoegertem Ausloesevorgang
DE1196279B (de) * 1962-07-03 1965-07-08 Siemens Ag Einrichtung zur Kontakttrennung bei grossen UEberstroemen
US3384845A (en) * 1966-11-23 1968-05-21 Gen Electric Current-limiting electric circuit breaker

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278708A (en) * 1965-11-26 1966-10-11 Gen Electric Electric circuit breaker with thermal magnetic trip
US3950714A (en) * 1974-09-18 1976-04-13 Westinghouse Electric Corporation Self-adjusting circuit breaker with rotating trip assembly
US5225800A (en) * 1992-02-25 1993-07-06 General Electric Company Thermal-magnetic trip unit with low current response
FR2703824B1 (fr) * 1993-04-07 1995-05-12 Merlin Gerin Disjoncteur limiteur multipolaire à répulsion électrodynamique.
US5686709A (en) * 1995-05-26 1997-11-11 General Electric Company Modular trip bar assembly for multipole circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE699839C (de) * 1938-02-01 1940-12-07 Aeg Selbstanlasser fuer Gleich- und Wechselstrombetrieb
DE1119393B (de) * 1959-01-28 1961-12-14 Merlin Gerin Leistungsschalter mit elektromagnetischem Ausloeser und verzoegertem Ausloesevorgang
DE1196279B (de) * 1962-07-03 1965-07-08 Siemens Ag Einrichtung zur Kontakttrennung bei grossen UEberstroemen
US3384845A (en) * 1966-11-23 1968-05-21 Gen Electric Current-limiting electric circuit breaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007144050A1 (de) * 2006-06-14 2007-12-21 Moeller Gmbh Thermischer und/oder magnetischer überlastauslöser
WO2007144051A1 (de) * 2006-06-14 2007-12-21 Moeller Gmbh Überlastauslöser für ein mehrpoliges elektrisches schaltgerät
US7876192B2 (en) 2006-06-14 2011-01-25 Eaton Industries Gmbh Thermal and/or magnetic overload trip
EP2733720A1 (de) 2012-11-19 2014-05-21 Schneider Electric Industries SAS Thermomagnetischer Auslöser zur Auslösung eines Mehrphasen-Überlastschalters
FR2998415A1 (fr) * 2012-11-19 2014-05-23 Schneider Electric Ind Sas Declencheur magnetothermique de declenchement d'un disjoncteur polyphase
US9024711B2 (en) 2012-11-19 2015-05-05 Schneider Electric Industries Sas Thermal-magnetic trip device for tripping a multiphase circuit breaker

Also Published As

Publication number Publication date
DE69730806T2 (de) 2005-11-17
FR2757309A1 (fr) 1998-06-19
FR2757309B1 (fr) 1999-01-29
CN1174453C (zh) 2004-11-03
EP0848404B1 (de) 2004-09-22
US5831499A (en) 1998-11-03
CN1185014A (zh) 1998-06-17
ES2227659T3 (es) 2005-04-01
DE69730806D1 (de) 2004-10-28

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