EP0848404B1 - Bloc de déclenchement sélectif pour un disjoncteur multipolaire - Google Patents
Bloc de déclenchement sélectif pour un disjoncteur multipolaire Download PDFInfo
- Publication number
- EP0848404B1 EP0848404B1 EP97410137A EP97410137A EP0848404B1 EP 0848404 B1 EP0848404 B1 EP 0848404B1 EP 97410137 A EP97410137 A EP 97410137A EP 97410137 A EP97410137 A EP 97410137A EP 0848404 B1 EP0848404 B1 EP 0848404B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- movable
- magnetic armature
- blade
- 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.)
- Expired - Lifetime
Links
Images
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 a different axis 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 driver.
- 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 movable 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 lugs 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 plays through a bracelet 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 energy 16 respectively in the armed position, and in the triggered position.
- 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 ensures the locking of 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 a non-deformed state, and placed against the magnetic frame mobile 22.
- the blade damper 58 acts as a brake preventing displacement of the movable armature 22 beyond the intermediate position.
- the triggering of downstream circuit breaker thus keeps the upstream circuit breaker closed, the upstream circuit breaker 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 amortization delay 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)
Description
- une armature magnétique fixe en forme de U disposée en regard d'une armature magnétique mobile avec interposition d'un entrefer,
- un conducteur associé à l'armature magnétique fixe, et traversé par le courant du pôle correspondant,
- un organe élastique sollicitant l'armature magnétique mobile vers une position écartée de repos correspondant à l'entrefer maximum,
- et des moyens de temporisation coopérant avec l'armature magnétique mobile pour assurer une sélectivité chronométrique de la protection.
- la figure 1 est une vue schématique en perspective du bloc de déclenchement selon l'invention, un seul déclencheur magnétique sélectif étant représenté sur le pôle de gauche ;
- la figure 2 montre à échelle agrandie le déclencheur de la figure 1 après retrait du boitier isolant ;
- la figure 3 est une vue en coupe selon la ligne 3-3 de la figure 1, l'armature magnétique mobile se trouvant dans la position écartée de repos ;
- les figures 4 et 5 sont des vues identiques de la figure 3 respectivement dans la position intermédiaire, et dans la position finale de déclenchement de l'armature mobile ;
- la figure 6 est une vue en perspective du sous-ensemble préassemblé comprenant l'étrier, l'armature mobile, la lame de l'amortisseur, et le ressort de rappel ;
- la figure 7 est une vue en élévation de la figure 6 ;
- la figure 8 est une vue en coupe selon la ligne 8-8 de la figure 7 ;
- les figures 9 et 10 sont des vues schématiques d'une variante de réalisation, respectivement dans la position de repos, et dans la position intermédiaire de l'armature mobile ;
- les figures 11 et 12 sont des vues schématiques d'une variante de réalisation, respectivement dans la position de repos, et dans la position intermédiaire de l'armature mobile.
Claims (10)
- Bloc de déclenchement (10) pour un disjoncteur électrique multipolaire comprenant un déclencheur magnétique sélectif (18) par pôle, ledit bloc de déclenchement comportant :une armature magnétique fixe (20) en forme de U disposée en regard d'une armature magnétique mobile (22) avec interposition d'un entrefer (40),un conducteur (24) associé à l'armature magnétique fixe (20), et traversé par le courant du pôle correspondant,un organe élastique (36) sollicitant l'armature magnétique mobile (22) vers une position écartée de repos correspondant à l'entrefer (40) maximum,et des moyens de temporisation coopérant avec l'armature magnétique mobile (22) pour assurer une sélectivité chronométrique de la protection,
- Bloc de déclenchement selon la revendication 1, caractérisé en ce que l'armature magnétique mobile (22) est montée à pivotement sur un étrier (34) fixé au conducteur (24), et que l'organe amortisseur (58) comporte une lame métallique de faible épaisseur, agencée dans un intervalle (56) entre l'armature mobile (22) et ledit étrier (34).
- Bloc de déclenchement selon la revendication 2, caractérisé en ce que la lame de l'amortisseur (58) comprend une base clipsée sur une saillie (60) de l'étrier (34), et une partie supérieure coopérant avec un organe d'entraínement de l'armature magnétique mobile (22).
- Bloc de déclenchement selon la revendication 3, caractérisé en ce que l'organe d'entraínement est formé par un bracelet (62) prévu à l'arrière de l'armature mobile (22), et traversé à jeu par ladite lame.
- BLoc de déclenchement selon la revendication 3 ou 4, caractérisé en ce que la base de la lame présente une largeur légèrement supérieure à l'écartement transversal entre les flasques (50,52) de l'étrier (34), lesdits flasques servant de butée à la lame lorsque l'armature magnétique mobile (22) arrive dans la position intermédiaire pendant la première course.
- Bloc de déclenchement selon la revendication 2, caractérisé en ce que l'étrier (34) fixe est équipé de pattes (54) latérales agencées pour définir la position de repos de l'armature magnétique mobile (22), et ledit intervalle (56) de logement de la lame.
- Bloc de déclenchement selon l'une des revendications 2 à 6, caractérisé en ce que l'organe élastique de rappel de l'armature mobile (22) est formé par un ressort de compression (36) agencé du côté opposé de l'intervalle (56) entre l'embase (32) de l'étrier (34), et un rebord (38) de l'armature mobile (22).
- Bloc de déclenchement selon la revendication 7, caractérisé en ce que l'étrier (34), la lame de l'amortisseur (58), l'armature magnétique mobile (22), et le ressort de compression (36) constitue un sous-ensemble préassemblé, et fixé par une vis (30) sur le conducteur (24) pour former le déclencheur magnétique sélectif (18).
- Bloc de déclenchement selon la revendication 1, caractérisé en ce que l'organe amortisseur comprend un ressort de compression (70) solidarisé à l'armature magnétique mobile (22) et venant en engagement avec le conducteur (24) au bout de la première course de l'armature (22).
- Bloc de déclenchement selon la revendication 1, caractérisé en ce que l'organe amortisseur comporte un ressort de torsion (72) monté sur l'axe de pivotement (53) de l'armature magnétique mobile (22).
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 EP0848404A1 (fr) | 1998-06-17 |
EP0848404B1 true EP0848404B1 (fr) | 2004-09-22 |
Family
ID=9498832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97410137A Expired - Lifetime EP0848404B1 (fr) | 1996-12-13 | 1997-12-04 | Bloc de déclenchement sélectif pour un disjoncteur multipolaire |
Country Status (6)
Country | Link |
---|---|
US (1) | US5831499A (fr) |
EP (1) | EP0848404B1 (fr) |
CN (1) | CN1174453C (fr) |
DE (1) | DE69730806T2 (fr) |
ES (1) | ES2227659T3 (fr) |
FR (1) | FR2757309B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007010946B4 (de) | 2006-06-14 | 2018-03-08 | Eaton Industries Gmbh | Überlastauslöser für ein mehrpoliges elektrisches Schaltgerät |
Families Citing this family (17)
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 |
DE102007010944A1 (de) * | 2006-06-14 | 2007-12-20 | Moeller Gmbh | Thermischer und/oder magnetischer Überlastauslöser |
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 |
FR2998415B1 (fr) * | 2012-11-19 | 2015-01-16 | Schneider Electric Ind Sas | Declencheur magnetothermique de declenchement d'un disjoncteur polyphase |
WO2015006965A1 (fr) * | 2013-07-19 | 2015-01-22 | General Electric Company | Appareil de commutation électrique comprenant un ensemble amortisseur réglable |
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 (fr) * | 2017-03-09 | 2021-11-10 | LSIS Co., Ltd. | Disjoncteur comportant un mécanisme de déclenchement instantané |
KR102275002B1 (ko) * | 2019-11-12 | 2021-07-08 | 엘에스일렉트릭(주) | 트립 장치 |
CN118098894B (zh) * | 2024-04-25 | 2024-07-19 | 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 |
Family Cites Families (9)
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 |
US3278708A (en) * | 1965-11-26 | 1966-10-11 | Gen Electric | Electric circuit breaker with thermal magnetic trip |
US3384845A (en) * | 1966-11-23 | 1968-05-21 | Gen Electric | Current-limiting electric circuit breaker |
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 |
-
1996
- 1996-12-13 FR FR9615607A patent/FR2757309B1/fr not_active Expired - Fee Related
-
1997
- 1997-11-12 US US08/968,017 patent/US5831499A/en not_active Expired - Lifetime
- 1997-12-01 CN CNB971230587A patent/CN1174453C/zh not_active Expired - Lifetime
- 1997-12-04 DE DE69730806T patent/DE69730806T2/de not_active Expired - Lifetime
- 1997-12-04 ES ES97410137T patent/ES2227659T3/es not_active Expired - Lifetime
- 1997-12-04 EP EP97410137A patent/EP0848404B1/fr not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007010946B4 (de) | 2006-06-14 | 2018-03-08 | Eaton Industries Gmbh | Überlastauslöser für ein mehrpoliges elektrisches Schaltgerät |
Also Published As
Publication number | Publication date |
---|---|
DE69730806T2 (de) | 2005-11-17 |
FR2757309A1 (fr) | 1998-06-19 |
CN1174453C (zh) | 2004-11-03 |
EP0848404A1 (fr) | 1998-06-17 |
CN1185014A (zh) | 1998-06-17 |
US5831499A (en) | 1998-11-03 |
FR2757309B1 (fr) | 1999-01-29 |
DE69730806D1 (de) | 2004-10-28 |
ES2227659T3 (es) | 2005-04-01 |
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