EP0326449B1 - Electromagnetic trip device with an adjustable trip level - Google Patents
Electromagnetic trip device with an adjustable trip level Download PDFInfo
- Publication number
- EP0326449B1 EP0326449B1 EP89400092A EP89400092A EP0326449B1 EP 0326449 B1 EP0326449 B1 EP 0326449B1 EP 89400092 A EP89400092 A EP 89400092A EP 89400092 A EP89400092 A EP 89400092A EP 0326449 B1 EP0326449 B1 EP 0326449B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- moving core
- trip device
- electromagnetic trip
- 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 - 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
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7463—Adjusting only the electromagnetic mechanism
-
- 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
- H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
-
- 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
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
Definitions
- the trigger according to the invention advantageously has a longitudinal axis of symmetry on which the movable core of cylindrical shape is slidably mounted.
- the groove in the movable core defines a section or a portion of reduced section, which is connected to the two portions which surround it, by inclined edges in the form of truncated cones.
- the bistable balance of the plunger core essential for obtaining a frank triggering threshold, is improved by the presence of the groove and by the use of a decreasing force return device during the displacement of the movable core towards the fixed core.
- This decreasing force exerted on the movable core is obtained by a modification of the line of action of the return spring which acts on a pivoting lever with modification of the lever arm.
- This variation in the restoring force exerted on the movable core as a function of its position also widens the range of adjustment of the trigger thresholds.
- the coil 16 is offset axially in the direction of the lower face 14 while being held mechanically by a spacer 26 interposed between the upper face 12 of the cylinder head 10 and the top of the coil 16. Any other means of fixing the coil is of course usable.
- a pivoting lever 28 is mounted on a fixed pivot axis 30, for example carried by the cylinder head 10 and is mechanically connected to the movable core 20 by a light 32, in which is engaged a lug 34 carried by the movable core 20.
- a spring return 36 is anchored on the one hand to a point 38 of the pivoting lever 28, and on the other to a point 40.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
L'invention est relative à un déclencheur électromagnétique pour un appareil électrique de protection, à réglage du seuil de déclenchement instantané, comprenant une culasse présentant une face inférieure et une face supérieure espacées l'une de l'autre, un noyau plongeur mobile axialement à travers un orifice ménagé dans la face supérieure, une bobine intercalée entre lesdites faces et coaxiale audit noyau mobile, un noyau fixe solidaire de la face inférieure de la culasse, un ressort de rappel sollicitant le noyau mobile en direction opposée du noyau fixe et un dispositif de réglage de la position initiale du noyau mobile entre une position maximale d'écartement du noyau fixe et une position minimale.The invention relates to an electromagnetic trip device for an electrical protection device, with adjustment of the instantaneous trip threshold, comprising a cylinder head having a lower face and an upper face spaced from one another, a plunger core movable axially to through an orifice in the upper face, a coil interposed between said faces and coaxial with said movable core, a fixed core integral with the underside of the cylinder head, a return spring urging the movable core in the opposite direction from the fixed core and a device for adjusting the initial position of the movable core between a maximum position of separation of the fixed core and a minimum position.
Un tel déclencheur, est par exemple utilisé pour provoquer le déclenchement instantané d'un appareil de protection contre les courants de courts-circuits, notamment un disjoncteur ou contacteur, lorsque le courant parcourant la bobine est suffisamment intense pour provoquer l'attraction du noyau plongeur. Le seuil de déclenchement doit être parfaitement défini et réglable, et le document DE-B-1.107.797 décrit un dispositif pour modifier la position initiale du noyau mobile, afin de réduire ou d'augmenter l'entrefer de séparation du noyau fixe, pour régler ce seuil de déclenchement. Les plages de réglage obtenues par ces moyens sont limitées et le besoin se fait sentir de disposer de moyens de réglage additionnel sans complication notable du déclencheur.Such a trigger, for example, is used to cause the instantaneous triggering of a device for protection against short-circuit currents, in particular a circuit breaker or contactor, when the current flowing through the coil is sufficiently intense to cause the attraction of the plunger core. . The triggering threshold must be perfectly defined and adjustable, and the document DE-B-1.107.797 describes a device for modifying the initial position of the mobile core, in order to reduce or increase the air gap for separation of the fixed core, to set this trigger threshold. The adjustment ranges obtained by these means are limited and there is a need to have additional adjustment means without any noticeable complication of the trigger.
La présente invention a pour but de permettre la réalisation d'un déclencheur électromagnétique à seuil de déclenchement réglable avec précision et sur une large étendue.The object of the present invention is to enable the production of an electromagnetic trip device with a trigger threshold that can be adjusted with precision and over a wide area.
Le déclencheur électromagnétique selon l'invention est caractérisé par une gorge annulaire ménagée dans ledit noyau mobile sur une distance axiale légèrement supérieure à la distance axiale entre lesdites positions maximale et minimale, dans la zone de ladite face supérieure, de telle manière que cette dernière est au voisinage de l'un des bords de la gorge en l'une desdites positions et au vosinage de l'autre des bords de la gorge en l'autre desdites positions.The electromagnetic trip device according to the invention is characterized by an annular groove formed in said movable core over an axial distance slightly greater than the axial distance between said maximum and minimum positions, in the region of said upper face, such that the latter is in the vicinity of one of the edges of the groove in one of said positions and in the shape of the other of the edges throat in the other of said positions.
La gorge ménagée dans le noyau mobile définit un deuxième entrefer dans le circuit magnétique excité par la bobine et, ce deuxième entrefer engendre une force d'attraction du noyau mobile qui s'ajoute à celle du noyau fixe lorsque le noyau mobile est dans la position minimale d'écartement du noyau fixe et inversement, une force de retenue du noyau mobile qui se sous trait à la force d'attraction du noyau fixe lorsque le noyau mobile est en position maximale d'écartement du noyau fixe. La forme particulière du noyau permet une augmentation de la gamme de réglage tout en conservant une course identique du noyau mobile, la précision de réglage des valeurs de déclenchement étant accrue.The groove formed in the mobile core defines a second air gap in the magnetic circuit excited by the coil and, this second air gap generates a force of attraction of the mobile core which is added to that of the fixed core when the mobile core is in the position. minimum spacing of the fixed core and vice versa, a retaining force of the mobile core which relates to the force of attraction of the fixed core when the mobile core is in the maximum position of spacing of the fixed core. The particular shape of the core allows an increase in the adjustment range while maintaining an identical stroke of the movable core, the precision of adjustment of the trigger values being increased.
Le document GB-A-415.387 est relatif à un déclencheur électromagnétique dont le noyau présente deux sections différentes de façon à accroître la force d'attraction dès que la section pleine pénêtre dans l'entrefer. Ce déclencheur ne comporte pas de réglage.The document GB-A-415.387 relates to an electromagnetic trip device whose core has two different sections so as to increase the force of attraction as soon as the full section penetrates into the air gap. This trigger has no setting.
Le déclencheur selon l'invention présente avantageusement un axe longitudinal de symétrie sur lequel le noyau mobile de forme cylindrique est monté à coulissement. La gorge ménagée dans le noyau mobile définit un tronçon ou une portion de section réduite, qui se raccorde aux deux portions qui l'encadrent, par des bords inclinés en forme de troncs de cône. L'équilibre bistable du noyau plongeur, indispensable à l'obtention d'un seuil de déclenchement franc, est amélioré par la présence de la gorge et par l'emploi d'un dispositif de rappel à force décroissante au cours du déplacement du noyau mobile en direction du noyau fixe. Cette force décroissante exercée sur le noyau mobile est obtenue par une modification de la ligne d'action du ressort de rappel qui agit sur un levier pivotant avec modification du bras de levier. Cette variation de la force de rappel exercée sur le noyau mobile en fonction de sa position élargit également la gamme de réglage des seuils de déclenchement.The trigger according to the invention advantageously has a longitudinal axis of symmetry on which the movable core of cylindrical shape is slidably mounted. The groove in the movable core defines a section or a portion of reduced section, which is connected to the two portions which surround it, by inclined edges in the form of truncated cones. The bistable balance of the plunger core, essential for obtaining a frank triggering threshold, is improved by the presence of the groove and by the use of a decreasing force return device during the displacement of the movable core towards the fixed core. This decreasing force exerted on the movable core is obtained by a modification of the line of action of the return spring which acts on a pivoting lever with modification of the lever arm. This variation in the restoring force exerted on the movable core as a function of its position also widens the range of adjustment of the trigger thresholds.
Selon un développement de l'invention, la bobine est décalée de manière à disposer, en position de réglage minimale du noyau mobile, l'entrefer de séparation du noyau mobile et du noyau fixe dans le centre de la bobine où l'intensité du champ magnétique est maximale. En position maximale, le noyau mobile est quasiment à l'extérieur de la bobine dans une zone de champ réduit qui se traduit par un seuil de déclenchement plus élevé.According to a development of the invention, the coil is offset so as to have, in the position of minimum adjustment of the movable core, the gap between the movable core and the fixed core in the center of the coil where the field strength magnetic is maximum. In the maximum position, the movable core is almost outside the coil in a reduced field area which results in a higher trigger threshold.
D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de mise en oeuvre de l'invention donné à titre d'exemple non limitatif et représenté aux dessins annexés dans lesquels:
- la figure 1 est une vue schématique en coupe axiale d'un déclencheur électromagnétique selon l'invention, représenté en position initiale de réglage minimale;
- les figures 2 et 3 sont des vues analogues à celle de la figure 1 représentant respectivement le déclencheur en position maximale et en position de déclenchement;
- la figure 4 montre les lignes de champ du circuit magnétique, représenté sur la demi-vue de gauche en position minimale et sur la demi-vue de droite en position maximale de réglage.
- Figure 1 is a schematic view in axial section of an electromagnetic trip device according to the invention, shown in the initial position of minimum adjustment;
- Figures 2 and 3 are views similar to that of Figure 1 respectively showing the trigger in maximum position and in the release position;
- FIG. 4 shows the field lines of the magnetic circuit, shown in the left half-view in the minimum position and in the right half-view in the maximum adjustment position.
Sur les figures, une culasse 10 en forme de U qui peut également être un boîtier partiellement ou entièrement fermé, présente une face supérieure 12 et une face inférieure 14, encadrant une bobine 16 reliée à un circuit électrique non représenté. La face inférieure 14 porte un noyau fixe 18 pénètrant axialement à l'intérieur de la bobine 16 et coopérant avec un noyau mobile 20 monté à coulissement suivant un axe XX de symétrie du déclencheur. La culasse 10, le noyau fixe 18 et le noyau mobile 20 sont en un matériau magnétisable approprié bien connu des spécialistes. La face supérieure 12 présente un orifice 22 de passage du noyau mobile 20 avec interposition d'un fourreau cylindrique 24 en matériau isolant non magnétique qui gaine l'ensemble noyau fixe 18 et noyau mobile 20. La bobine 16 est décalée axialement en direction de la face inférieure 14 en étant maintenue mécaniquement par une entretoise 26 intercalée entre la face supérieure 12 de la culasse 10 et le haut de la bobine 16. Tout autre moyen de fixation de la bobine est bien entendu utilisable. Un levier pivotant 28 est monté sur un axe fixe de pivotement 30, par exemple porté par la culasse 10 et est mécaniquement relié au noyau mobile 20 par une lumière 32, dans laquelle est engagé un ergot 34 porté par le noyau mobile 20. Un ressort de rappel 36 est ancré d'une part à un point 38 du levier pivotant 28, et d'autre part à un point 40. Les points d'ancrage 38,40 sont agencés par rapport à l'axe de pivotement 30 du levier pivotant 28, de manière à exercer sur ce dernier un moment sollicitant le levier pivotant dans le sens des aiguilles d'une montre, correspondant à un mouvement vers le haut du noyau mobile 20 sur la figure 1. La liaison à lumière 32 et ergot 34 transforme le mouvement de pivotement du levier pivotant 28 en un mouvement de coulissement du noyau mobile 20. Le levier pivotant 28 porte une languette 44 d'actionnement d'une barre de déclenchement 46, par exemple d'un disjoncteur électrique de protection. Le levier pivotant 28 coopère avec une butée 48 ménagée sur l'un des bras d'une bascule 50, dont l'autre bras coopère avec un coin de réglage 52,commandé à coulissement par tout moyen approprié, notamment par vis de réglage non représentée. Le ressort de rappel 36 sollicite le levier pivotant 28 en appui de la butée 48, dont la position définit la position initiale du noyau plongeur 20. Il est facile de voir qu'un enfoncement du coin de réglage 52 engendre un déplacement vers le bas en direction du noyau fixe 18, du noyau mobile 20 et inversement qu'un retrait du coin 52 autorise un écartement du noyau mobile 20 du noyau fixe 18, les deux positions extrèmes de réglage, en l'occurrence la position minimale et la position maximale étant représentées aux figures 1 et 2. Lorsque la bobine 16 n'est pas excitée, le noyau mobile 20 est maintenu en position écartée du noyau fixe 18, cette position initiale étant en fonction de la position du coin de réglage 52, soit la position de réglage minimale représentée à la figure 1, soit la position de réglage maximale représentée à la figure 2, soit toute position intermédiaire à ces positions extrèmes. Une excitation de la bobine 16 provoque une attraction du noyau mobile 20, qui se déplace lorsque le courant parcourant la bobine 16 dépasse un seuil prédéterminé suffisant pour vaincre les forces de rappel notamment exercées par le ressort 36 sur le noyau mobile 20. La figure 3 illustre la position attirée du noyau mobile 20 qui provoque l'actionnement de la barre de déclenchement 46 par la languette 44 du levier pivotant 28. Lors d'une désexcitation de la bobine 16, le ressort de rappel 36 ramène l'ensemble dans la position initiale prête à un nouveau fonctionnement. Le point d'ancrage 40 du ressort 36 peut être déplacé par une vis de réglage 54 pour régler la ligne d'action du ressort de rappel 36, et modifier ainsi la force de rappel exercée sur le noyau mobile 20.In the figures, a
En se reférant plus particulièrement à la figure 4, on voit que le noyau mobile 20 présente selon l'invention, une gorge 56 à fond 58 de forme cylindrique et à bords inférieur 60 et supérieur 62 inclinés. Les bords 60,62 en forme de tronc de cône assurent le raccordement de la gorge 56 aux portions inférieure 64 et supérieure 66 du noyau mobile 20 de section élargie. Dans la position de réglage minimale représentée sur la partie gauche de la figure 4, le flux magnétique parcourt un premier entrefer E1 entre le noyau mobile 20 et le noyau fixe 18, puis la face inférieure 14, la culasse 10, la face supérieure 12 et un deuxième entrefer E2 entre le bord de l'orifice 22 et le bord 62 de la gorge 56. Une force d'attraction F1 tend à attirer le noyau mobile 20 vers le noyau fixe 18 pour réduire le premier entrefer E1 et à cette force F1, s'ajoute une deuxième force F2 au niveau de l'entrefer E2. La gorge 56 est disposée de telle manière qu'en position de réglage minimale, le bord 62 est légèrement au dessus de l'orifice 22 pour engendrer une force ayant une composante F2 orientée en en direction du noyau fixe 18. En position de réglage maximale représenté sur la partie droite de la figure 4, l'entrefer E1 est notablement augmenté et le bord 60 vient en regard de l'orifice 22 en restant néanmoins en dessous de la face supérieure 12. L'entrefer E3 entre la surface polaire constituée par le bord 60 et la surface polaire constituée par le bord de l'orifice 22, engendre une force F3 orientée en direction opposée de la force F1 d'attraction du noyau plongeur mobile 20 en direction du noyau fixe 18. Il est facile de voir que les forces F2 et F3, dues à la gorge 56 permettent respectivement d'abaisser le seuil de déclenchement minimal et d'augmenter le seuil de déclenchement maximal, ce qui correspond à une gamme étendue de réglage du seuil de déclenchement, la force F1 devenant prépondérante à un certain moment.Referring more particularly to Figure 4, we see that the
Un effet additionnel résulte du décalage de la bobine 16 en direction de la face inférieure 14 de façon à disposer l'entrefer E1, lors d'une position minimale, au voisinage du centre de la bobine 16 dans une zone de champ élevée et à décaler cet entrefer E1 en positon maximale vers une zone de champ réduit en bordure de la bobine 16. Il est clair que l'intensité du courant, parcourant la bobine 16, nécessaire pour attirer le noyau mobile 20 et provoquer le déclenchement sera inférieure dans la position de réglage minimale et supérieure, du fait de la réduction du champ en bordure de la bobine, lors d'une position maximale du noyau plongeur mobile 20. Le changement de la ligne d'action du ressort de rappel 36, lors d'un pivotement du levier pivotant 28 de façon à réduire la force de rappel exercée sur le noyau plongeur mobile 20 lors d'un rapprochement de ce dernier du noyau fixe 18, agit dans le même sens d'élargissement de la gamme des seuils de déclenchement. Dans l'exemple décrit sur les figures, les surfaces polaires de l'entrefer E1 sont coniques mais elles peuvent bien entendu être planes et la hauteur du noyau fixe 18 peut être réduite. Le dispositif de rappel peut être agencé différemment et le fourreau de guidage 24 peut être remplacé par tout autre moyen, notamment par une tige de guidage traversant le noyau plongeur mobile 20. La surface polaire de la culasse 10 définissant l'entrefer E2 et E3 peut être conformée différemment, en particulier être agrandie pour modifier la répartition des lignes de champ, sans sortir du cadre de la présente invention.An additional effect results from the offset of the
Claims (10)
- An electromagnetic trip device for an electrical protective device, with adjustment of the instantaneous tripping threshold, comprising a casing (10) presenting a lower face (14) and an upper face (12) spaced apart from one another, a moving plunger core (20) axially across an orifice (22) arranged in the upper face (12), a coil (16) fitted between said faces (12, 14) and coaxial to said moving core (20), a stationary core (18) securedly fixed to the lower face (14) of the casing (10), a return spring (36) urging the moving core in the opposite direction from the stationary core (18), and a device (28, 50, 52) for adjusting the initial position of the moving core (20) between a maximum separation position from the stationary core (18) and a minimum position characterized by an annular groove (56) arranged in said moving core (20) over an axial distance slightly greater than the axial distance between said maximum and minimum positions, in the zone of said upper face (12), in such a way that the latter is in proximity to one (62) of the edges of the groove (56) in one of said positions and in proximity to the other (60) of the edges of the groove (56) in the other of said positions.
- The electromagnetic trip device with cylindrical moving core according to claim 1, characterized in that said groove (56) defines an intermediate cylindrical portion (58) of the moving core (20) of a smaller cross-section than that of the cylindrical portions (64, 66) axially surrounding said intermediate portion.
- The electromagnetic trip device according to claim 2, characterized in that the two edges (60, 62) of said groove (56) are shaped as two cone frustums connecting the intermediate portion (58) to the two cylindrical portions (64, 66) of the moving core to define with said upper face (12) of the casing (10) an inclined air-gap (E2, E3), capable of generating a force having an axial component.
- The electromagnetic trip device according to claim 1, 2 or 3, characterized in that said orifice (22) arranged in the upper face (12) surrounds the moving core (20).
- The electromagnetic trip device according to any one of the above claims, characterized in that the moving core (20) is mechanically connected to a pivoting lever (28) controlling tripping in the attracted position of the moving core, and that it comprises an adjustable stop (48) to define the initial position of the moving core.
- The electromagnetic trip device according to any one of the above claims, characterized in that said return spring (36) is arranged to exert on the moving core (20) a return force which is variable with the position of the moving core and which decreases from the maximum position to the minimum position of the moving core.
- The electromagnetic trip device according to claim 5 and 6, characterized in that said return spring (36) exerts a moment on said pivoting lever whose arm decreases between the maximum position and the minimum position of the moving core (20).
- The electromagnetic trip device according to claim 6 or 7, characterized in that the fixing point (40) of the return spring (36) is adjustable to adjust the return force exerted on the moving core (20).
- The electromagnetic trip device according to any one of the above claims, characterized in that said coil (16) is axially offset in the direction of said lower face (14) and surrounds the stationary core (18) supported by said lower face which penetrates into the coil.
- The electromagnetic trip device according to claim 9, characterized in that the moving core (20) is in said maximum position almost outside said coil (16).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8801100A FR2626713B1 (en) | 1988-01-28 | 1988-01-28 | ELECTROMAGNETIC TRIGGER WITH TRIGGER THRESHOLD ADJUSTMENT |
FR8801100 | 1988-01-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0326449A1 EP0326449A1 (en) | 1989-08-02 |
EP0326449B1 true EP0326449B1 (en) | 1993-09-29 |
Family
ID=9362795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89400092A Expired - Lifetime EP0326449B1 (en) | 1988-01-28 | 1989-01-12 | Electromagnetic trip device with an adjustable trip level |
Country Status (6)
Country | Link |
---|---|
US (1) | US4939492A (en) |
EP (1) | EP0326449B1 (en) |
JP (1) | JP2845917B2 (en) |
DE (1) | DE68909431T2 (en) |
ES (1) | ES2046495T3 (en) |
FR (1) | FR2626713B1 (en) |
Families Citing this family (84)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1292453B1 (en) | 1997-07-02 | 1999-02-08 | Aeg Niederspannungstech Gmbh | ROTATING GROUP OF CONTACTS FOR HIGH FLOW SWITCHES |
DE19819242B4 (en) | 1998-04-29 | 2005-11-10 | Ge Power Controls Polska Sp.Z.O.O. | Thermomagnetic circuit breaker |
US6114641A (en) * | 1998-05-29 | 2000-09-05 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breakers |
CN1163932C (en) | 1998-08-14 | 2004-08-25 | 西门子公司 | Device with axially positionable coil winding |
US6087913A (en) * | 1998-11-20 | 2000-07-11 | General Electric Company | Circuit breaker mechanism for a rotary contact system |
US6037555A (en) * | 1999-01-05 | 2000-03-14 | General Electric Company | Rotary contact circuit breaker venting arrangement including current transformer |
US6166344A (en) * | 1999-03-23 | 2000-12-26 | General Electric Company | Circuit breaker handle block |
US6262872B1 (en) | 1999-06-03 | 2001-07-17 | General Electric Company | Electronic trip unit with user-adjustable sensitivity to current spikes |
US6268991B1 (en) | 1999-06-25 | 2001-07-31 | General Electric Company | Method and arrangement for customizing electronic circuit interrupters |
US6218917B1 (en) | 1999-07-02 | 2001-04-17 | General Electric Company | Method and arrangement for calibration of circuit breaker thermal trip unit |
US6188036B1 (en) | 1999-08-03 | 2001-02-13 | General Electric Company | Bottom vented circuit breaker capable of top down assembly onto equipment |
US6710988B1 (en) | 1999-08-17 | 2004-03-23 | General Electric Company | Small-sized industrial rated electric motor starter switch unit |
US6252365B1 (en) | 1999-08-17 | 2001-06-26 | General Electric Company | Breaker/starter with auto-configurable trip unit |
US6396369B1 (en) | 1999-08-27 | 2002-05-28 | General Electric Company | Rotary contact assembly for high ampere-rated circuit breakers |
US6175288B1 (en) | 1999-08-27 | 2001-01-16 | General Electric Company | Supplemental trip unit for rotary circuit interrupters |
US6232570B1 (en) | 1999-09-16 | 2001-05-15 | General Electric Company | Arcing contact arrangement |
US6326869B1 (en) | 1999-09-23 | 2001-12-04 | General Electric Company | Clapper armature system for a circuit breaker |
US6239395B1 (en) | 1999-10-14 | 2001-05-29 | General Electric Company | Auxiliary position switch assembly for a circuit breaker |
US6229413B1 (en) | 1999-10-19 | 2001-05-08 | General Electric Company | Support of stationary conductors for a circuit breaker |
US6317018B1 (en) | 1999-10-26 | 2001-11-13 | General Electric Company | Circuit breaker mechanism |
US6232856B1 (en) | 1999-11-02 | 2001-05-15 | General Electric Company | Magnetic shunt assembly |
US6377144B1 (en) | 1999-11-03 | 2002-04-23 | General Electric Company | Molded case circuit breaker base and mid-cover assembly |
ES2249875T3 (en) | 1999-11-03 | 2006-04-01 | AEG NIEDERSPANNUNGSTECHNIK GMBH & CO. KG | ROTARY CONTACT ARM ARRANGEMENT FOR SWITCH. |
US6300586B1 (en) | 1999-12-09 | 2001-10-09 | General Electric Company | Arc runner retaining feature |
US6310307B1 (en) | 1999-12-17 | 2001-10-30 | General Electric Company | Circuit breaker rotary contact arm arrangement |
US6172584B1 (en) | 1999-12-20 | 2001-01-09 | General Electric Company | Circuit breaker accessory reset system |
US6184761B1 (en) | 1999-12-20 | 2001-02-06 | General Electric Company | Circuit breaker rotary contact arrangement |
US6215379B1 (en) | 1999-12-23 | 2001-04-10 | General Electric Company | Shunt for indirectly heated bimetallic strip |
US6281461B1 (en) | 1999-12-27 | 2001-08-28 | General Electric Company | Circuit breaker rotor assembly having arc prevention structure |
US6346869B1 (en) | 1999-12-28 | 2002-02-12 | General Electric Company | Rating plug for circuit breakers |
US6211758B1 (en) | 2000-01-11 | 2001-04-03 | General Electric Company | Circuit breaker accessory gap control mechanism |
US6239677B1 (en) | 2000-02-10 | 2001-05-29 | General Electric Company | Circuit breaker thermal magnetic trip unit |
US6429759B1 (en) | 2000-02-14 | 2002-08-06 | General Electric Company | Split and angled contacts |
US6281458B1 (en) | 2000-02-24 | 2001-08-28 | General Electric Company | Circuit breaker auxiliary magnetic trip unit with pressure sensitive release |
US6313425B1 (en) | 2000-02-24 | 2001-11-06 | General Electric Company | Cassette assembly with rejection features |
US6204743B1 (en) | 2000-02-29 | 2001-03-20 | General Electric Company | Dual connector strap for a rotary contact circuit breaker |
US6404314B1 (en) | 2000-02-29 | 2002-06-11 | General Electric Company | Adjustable trip solenoid |
US6379196B1 (en) | 2000-03-01 | 2002-04-30 | General Electric Company | Terminal connector for a circuit breaker |
US6340925B1 (en) | 2000-03-01 | 2002-01-22 | General Electric Company | Circuit breaker mechanism tripping cam |
US6448521B1 (en) | 2000-03-01 | 2002-09-10 | General Electric Company | Blocking apparatus for circuit breaker contact structure |
US6346868B1 (en) | 2000-03-01 | 2002-02-12 | General Electric Company | Circuit interrupter operating mechanism |
US6459349B1 (en) | 2000-03-06 | 2002-10-01 | General Electric Company | Circuit breaker comprising a current transformer with a partial air gap |
US6211757B1 (en) | 2000-03-06 | 2001-04-03 | General Electric Company | Fast acting high force trip actuator |
US6366438B1 (en) | 2000-03-06 | 2002-04-02 | General Electric Company | Circuit interrupter rotary contact arm |
US6496347B1 (en) | 2000-03-08 | 2002-12-17 | General Electric Company | System and method for optimization of a circuit breaker mechanism |
US6429659B1 (en) | 2000-03-09 | 2002-08-06 | General Electric Company | Connection tester for an electronic trip unit |
US6232859B1 (en) | 2000-03-15 | 2001-05-15 | General Electric Company | Auxiliary switch mounting configuration for use in a molded case circuit breaker |
US6366188B1 (en) | 2000-03-15 | 2002-04-02 | General Electric Company | Accessory and recess identification system for circuit breakers |
US6218919B1 (en) | 2000-03-15 | 2001-04-17 | General Electric Company | Circuit breaker latch mechanism with decreased trip time |
US6421217B1 (en) | 2000-03-16 | 2002-07-16 | General Electric Company | Circuit breaker accessory reset system |
US6459059B1 (en) | 2000-03-16 | 2002-10-01 | General Electric Company | Return spring for a circuit interrupter operating mechanism |
US6586693B2 (en) | 2000-03-17 | 2003-07-01 | General Electric Company | Self compensating latch arrangement |
US6559743B2 (en) | 2000-03-17 | 2003-05-06 | General Electric Company | Stored energy system for breaker operating mechanism |
US6639168B1 (en) | 2000-03-17 | 2003-10-28 | General Electric Company | Energy absorbing contact arm stop |
US6476698B1 (en) | 2000-03-17 | 2002-11-05 | General Electric Company | Convertible locking arrangement on breakers |
US6388213B1 (en) | 2000-03-17 | 2002-05-14 | General Electric Company | Locking device for molded case circuit breakers |
US6479774B1 (en) | 2000-03-17 | 2002-11-12 | General Electric Company | High energy closing mechanism for circuit breakers |
US6472620B2 (en) | 2000-03-17 | 2002-10-29 | Ge Power Controls France Sas | Locking arrangement for circuit breaker draw-out mechanism |
FR2806548B1 (en) | 2000-03-17 | 2002-08-23 | Ge Power Controls France | EXTRACTABLE MECHANISM FOR CIRCUIT BREAKERS |
US6373010B1 (en) | 2000-03-17 | 2002-04-16 | General Electric Company | Adjustable energy storage mechanism for a circuit breaker motor operator |
US6747535B2 (en) | 2000-03-27 | 2004-06-08 | General Electric Company | Precision location system between actuator accessory and mechanism |
US6995640B2 (en) * | 2000-05-16 | 2006-02-07 | General Electric Company | Pressure sensitive trip mechanism for circuit breakers |
US6373357B1 (en) * | 2000-05-16 | 2002-04-16 | General Electric Company | Pressure sensitive trip mechanism for a rotary breaker |
US6400245B1 (en) | 2000-10-13 | 2002-06-04 | General Electric Company | Draw out interlock for circuit breakers |
US6531941B1 (en) | 2000-10-19 | 2003-03-11 | General Electric Company | Clip for a conductor in a rotary breaker |
US6429760B1 (en) | 2000-10-19 | 2002-08-06 | General Electric Company | Cross bar for a conductor in a rotary breaker |
US6806800B1 (en) | 2000-10-19 | 2004-10-19 | General Electric Company | Assembly for mounting a motor operator on a circuit breaker |
US6362711B1 (en) | 2000-11-10 | 2002-03-26 | General Electric Company | Circuit breaker cover with screw locating feature |
US6380829B1 (en) | 2000-11-21 | 2002-04-30 | General Electric Company | Motor operator interlock and method for circuit breakers |
US6448522B1 (en) | 2001-01-30 | 2002-09-10 | General Electric Company | Compact high speed motor operator for a circuit breaker |
US6476337B2 (en) | 2001-02-26 | 2002-11-05 | General Electric Company | Auxiliary switch actuation arrangement |
US6882258B2 (en) * | 2001-02-27 | 2005-04-19 | General Electric Company | Mechanical bell alarm assembly for a circuit breaker |
KR100371375B1 (en) * | 2001-03-12 | 2003-02-07 | 엘지산전 주식회사 | Shunt trip device |
US20020171519A1 (en) * | 2001-05-17 | 2002-11-21 | Siemens Energy & Automation, Inc. | Clapper-type electromagnet assembly having v-shaped air gap for use in a circuit breaker trip unit |
US6678135B2 (en) | 2001-09-12 | 2004-01-13 | General Electric Company | Module plug for an electronic trip unit |
US6469882B1 (en) | 2001-10-31 | 2002-10-22 | General Electric Company | Current transformer initial condition correction |
US6804101B2 (en) | 2001-11-06 | 2004-10-12 | General Electric Company | Digital rating plug for electronic trip unit in circuit breakers |
ITMI20012717A1 (en) * | 2001-12-20 | 2003-06-20 | Abb Service Srl | ELECTROMAGNETIC RELAY FOR A LOW VOLTAGE SWITCH |
US6956452B2 (en) * | 2003-09-24 | 2005-10-18 | General Electric Company | Apparatus and method for circuit breaker trip unit adjustment |
FR2883098B1 (en) * | 2005-03-09 | 2008-05-09 | Hager Electro | FLAT MAGNETIC SUBASSEMBLY |
FR2958447B1 (en) * | 2010-04-02 | 2012-05-04 | Schneider Electric Ind Sas | ELECTROMAGNETIC TRIGGER FOR ELECTRICAL APPARATUS SWITCH, ELECTRICAL APPARATUS SWITCH COMPRISING SUCH A TRIGGER |
CN103258672A (en) * | 2013-04-27 | 2013-08-21 | 安徽省电力公司蚌埠供电公司 | Replacing tool of breaker spring |
CN103617929B (en) * | 2013-10-21 | 2016-03-30 | 浙江共同电子科技有限公司 | A kind of intelligent breaker of double electromagnet structure |
CN110739191B (en) * | 2018-07-20 | 2022-03-04 | 施耐德电器工业公司 | Electromagnetic release |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US905136A (en) * | 1905-04-15 | 1908-12-01 | Cutler Hammer Mfg Co | Alternating-current magnet. |
US1354881A (en) * | 1917-01-19 | 1920-10-05 | Electric Controller & Mfg Co | Electromagnetically-operated device |
US1354810A (en) * | 1920-02-04 | 1920-10-05 | Erickson Claus Edward | Drinking-cup package |
GB415387A (en) * | 1933-02-21 | 1934-08-21 | John Ashworth Crabtree | Improvements in, or relating to, automatic circuit-breakers |
DE1107797B (en) * | 1959-03-11 | 1961-05-31 | Licentia Gmbh | Tripping device with operationally adjustable electromagnetic trip values |
US3505623A (en) * | 1968-08-09 | 1970-04-07 | Ite Imperial Corp | Adjustable magnetic trip means for circuit breakers with single adjustment means |
JPS5536911A (en) * | 1978-09-04 | 1980-03-14 | Hitachi Ltd | Electricity-position conversion device |
US4352476A (en) * | 1980-07-01 | 1982-10-05 | Itw Limited | Cable clamps |
US4603312A (en) * | 1985-03-21 | 1986-07-29 | Westinghouse Electric Corp. | Circuit breaker with adjustable trip unit |
-
1988
- 1988-01-28 FR FR8801100A patent/FR2626713B1/en not_active Expired - Fee Related
-
1989
- 1989-01-12 DE DE89400092T patent/DE68909431T2/en not_active Expired - Fee Related
- 1989-01-12 EP EP89400092A patent/EP0326449B1/en not_active Expired - Lifetime
- 1989-01-12 ES ES198989400092T patent/ES2046495T3/en not_active Expired - Lifetime
- 1989-01-18 US US07/298,365 patent/US4939492A/en not_active Expired - Lifetime
- 1989-01-27 JP JP1019351A patent/JP2845917B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2626713A1 (en) | 1989-08-04 |
DE68909431D1 (en) | 1993-11-04 |
JPH01225025A (en) | 1989-09-07 |
DE68909431T2 (en) | 1994-05-05 |
EP0326449A1 (en) | 1989-08-02 |
ES2046495T3 (en) | 1994-02-01 |
JP2845917B2 (en) | 1999-01-13 |
US4939492A (en) | 1990-07-03 |
FR2626713B1 (en) | 1990-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0326449B1 (en) | Electromagnetic trip device with an adjustable trip level | |
EP0369899B1 (en) | Magnetic release device with a large capacity to adjust the release area | |
EP1085532B1 (en) | Electromagnetic actuator with two return springs | |
CA1112271A (en) | Electromagnetic contactor, with electromagnet reacting to overvoltage to limit and exclude overcurrents | |
EP0537090B1 (en) | Electric circuit breaker with insertion of extra-turns in the magnetic trip mechanism winding | |
CA2206950C (en) | High-voltage switch with resistor insertion upon closing | |
EP0013642A1 (en) | Low voltage current limiting circuit breaker | |
CA1174260A (en) | Contactor-breaker | |
FR2656953A1 (en) | ELECTROMAGNETIC RELAY POLARIZED BY A PERMANENT MAGNET. | |
EP1033736B1 (en) | Magnetic actuator with pivoting armature, in particular for a circuit breaker, and circuit breaker with such an actuator | |
EP0004801B1 (en) | Circuit breaker with an electromagnetic device for a fast opening operation of the movable contact | |
EP1134767B1 (en) | Magnetic operating release mechanism for a circuit breaker, and electrical protection apparatus equipped with such a device | |
CA2017127C (en) | High current rating medium voltage circuit-breaker | |
EP3699943B1 (en) | Magnetic tripping device for electrical switchgear | |
CH633882A5 (en) | PERCUTTER WITH MAGNETIC ATTRACTION AND LOCKING. | |
EP3349231B1 (en) | Electromechanical contactor | |
EP0926693B1 (en) | Selective trip device for circuit breaker | |
FR2620265A1 (en) | MAGNETIC TRIGGER ASSEMBLY FOR CIRCUIT BREAKER | |
FR2745949A1 (en) | ELECTROMAGNETIC ACTUATOR ELECTRIC CIRCUIT BREAKER AND CONTROL MECHANISM | |
EP1288450B1 (en) | Valve drive for an internal combustion engine | |
FR2739220A1 (en) | DEVICE FOR CONTROLLING ELECTRICAL LINE BREAKING MEANS | |
FR2768856A1 (en) | ELECTROMAGNETIC TRIGGER CIRCUIT BREAKER WITH MOBILE FORK CONTACT PROPELLER | |
FR2671906A1 (en) | Temperature-compensated magnetothermal circuit breaker | |
FR2567323A1 (en) | Miniature electric circuit breaker with multiple contacts | |
EP3018690A1 (en) | Electromagnetic actuator and electric contactor including such an actuator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES GB IT |
|
17P | Request for examination filed |
Effective date: 19900111 |
|
17Q | First examination report despatched |
Effective date: 19920402 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES GB IT |
|
REF | Corresponds to: |
Ref document number: 68909431 Country of ref document: DE Date of ref document: 19931104 |
|
ITF | It: translation for a ep patent filed |
Owner name: EUROPATENT S.A.S. |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19931202 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2046495 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19970124 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 19980113 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19990114 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19991222 Year of fee payment: 12 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000112 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20000601 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20000112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011101 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050112 |