EP1084502B1 - Sous-ensemble magnetique optimise - Google Patents
Sous-ensemble magnetique optimise Download PDFInfo
- Publication number
- EP1084502B1 EP1084502B1 EP98930816A EP98930816A EP1084502B1 EP 1084502 B1 EP1084502 B1 EP 1084502B1 EP 98930816 A EP98930816 A EP 98930816A EP 98930816 A EP98930816 A EP 98930816A EP 1084502 B1 EP1084502 B1 EP 1084502B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- assembly
- circuit breaker
- magnetic sub
- electrical apparatus
- 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
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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
- H01H71/24—Electromagnetic mechanisms
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
Definitions
- the present invention relates to a magnetic sub-assembly for modular electrical equipment of the circuit breaker type, as well as a circuit breaker incorporating such a sub-assembly.
- Document EP 0 335 774 A shows a magnetic sub-assembly according to the preamble of claim 1.
- Line protection circuit breakers generally include, in a modular housing with plastic shells, a circuit extending between two terminals and including a thermal trip bimetal for the line protection against overloads and, between a terminal and a fixed contact, an electromagnetic tripping or trip device magnetic often combined with these two components to form a magnetic sub-assembly.
- the magnetic trigger essentially consists of a coil with a mobile core, associated with a striker to ensure, in case of overcurrent, the disjunction by opening a cooperating moving contact with a fixed contact.
- the trigger more specifically includes an induction coil mounted longitudinally in a cylinder head magnetic, and surrounding said movable core associated with the striker and a fixed core, a return spring arranged between the cores to complement mounting.
- This spring makes it possible in particular to recall the mobile core in rest position, striker in the inactive position, i.e. away from the mechanical lock allowing the opening of the contacts by tilting of the mobile contact.
- the cylinder head consists of a sheet of magnetic material surrounding in general the coil to correctly channel the field lines produced, when the coil is traversed by a current.
- the cylinder head comprises sidewalls facing each other, one of which is provided with the fixed core, and at level at which the other elements of the subset are generally placed magnetic, that is to say one of the terminals of circuit breaker connection and fixed contact.
- Magnetic sub-assemblies thus assembled in one piece are then arranged in a part of the plastic shell of the housing, at the when the circuit breaker is assembled.
- these magnetic subsets are essential circuit breakers, and their design is therefore subject to care particular, as well as numerous tests intended to test the validity of recommended solutions.
- the main function being linked to the existence of brutal overcurrents, some of these tests are of course performed in different short circuit configurations, or at the very least with currents equal to several times the value of the nominal current, for which the performance of the magnetic sub-assembly is measured.
- the heating of the different parts of the magnetic sub-assembly is also a sensitive parameter, for which current tests nominal or slightly higher are performed, in order to decrease it as much as possible.
- this optimization must be carried out without change the installation conditions of said magnetic sub-assembly in the shells forming the case of the circuit breaker.
- the overall size allocated to it in the case remains the same.
- the optimization object of the invention which allows in particular to circuit breakers meet the standards in force in the United States of America, is also exercised in all possible directions, and concerns both the choice of materials and the shape of the components or manufacturing considerations.
- the present invention therefore applies to a magnetic sub-assembly a modular electrical device of the circuit breaker type, consisting of a part of an induction coil associated with a movable core with striker and return spring arranged in an insulating sheath, said coil being longitudinally mounted in a cylinder head having two sides in look at each other, the first side being provided with a fixed core in which is, guided the striker, and on the other hand a fixed contact which is connected a first end of the coil and a connection terminal to circuit breaker to which the second end of the coil is connected, characterized in that the side of the cylinder head disposed on the end side of the coil intended to be connected to the fixed contact is sized to be able to be at least partially integrated into the interior volume of the coil in order to absorb possible axial dimensional variations of the latter, the corresponding end of which is oriented so that its attachment to the fixed contact, whose position relative to the cylinder head is fixed, allows make up for the axial clearance of the coil.
- the coils can have an axial dimensional dispersion which can go up to more than 1mm, while the cylinder head can be manufactured in a much more precise way, made of its very nature, namely a sheet simply folded according to a special geometry.
- the coil has also been modified as part of the present invention, as will be seen in more detail below, but its minimum number of turns is imposed, to keep the ampere-turns necessary for the breakout force of the contacts.
- the wire section being particularly important in the ratings of circuit breakers to which preferably applies the invention (50-63 A), and this is not modifiable, a dimensional dispersion during manufacture is almost inevitable.
- This cylinder head has two sides end at which are fixed respectively a terminal connection and fixed contact, which is in the form of a blade metal on which a patch is attached to the precise place of the contact with the mobile contact.
- this fixed contact has an extension for its axial attachment to the side of the cylinder head, therefore provided with a hole for accommodate the end of the fixed core, and whose periphery is finally also dimensioned so that it can be partially integrated into the volume inside the coil, near the end of it.
- the fixed polar core is therefore integrated on the one hand into a side of the cylinder head, and secondly to the fixed contact whose extension in question is coaxial to said flank.
- This extension also subscribes to the same characteristics that this sidewall, and facilitates the assembly of all the coils from mass production.
- the end of the coil to be connected to the fixed contact is oriented in a direction substantially parallel to the axis of the coil, and fixed on a lug of the fixed contact located in the immediate vicinity of the patch of contact fitted to said fixed contact, said tab having for this purpose a surface area parallel to said end.
- the section of the wire electric forming the induction coil is rectangular in appearance, with a radial thickness less than the axial width to increase on the one hand the internal volume enclosed by said coil and on the other hand reduce the length of wire required for the same length of spool.
- this measure also has a direct consequence on the control of the breakout force of the contacts.
- the rectangular section of the wire being preserved, the width axial of the wire can be further increased if a decrease is made of thickness of the sheet forming the cylinder head, the external volume of which remains however unchanged.
- the magnetic sub-assembly with these improvements can however always be located in the same hulls or portion of hulls as his predecessors.
- the cylinder head has a U-shape, the arm connecting the two end blanks being on the same side of the coil as the fixed contact and connection terminal.
- This shape allows to achieve a volume of magnetic material constituting a good compromise between those who would lead to the best performance for very high short-circuit currents, and those that are more suitable for lower short-circuit currents.
- U shape correctly channels magnetic field lines at lower test values (180 A, 300 A) which allows in particular use a lower stiffness spring. It is however very efficient at saturation, and guarantees non-tripping limits above for average currents.
- the end of the arm connecting the sides of the cylinder head located on the side of the connection terminal has a side notch provided for fixing the second end of the coil to said terminal without that there is contact with the cylinder head.
- Said end is oriented in a plane perpendicular to the axis so as to exit tangentially from the winding forming said coil.
- the two ends of the coil are therefore substantially perpendicular to each other, and provided to facilitate their fixing respectively at the connection terminal and the fixed contact, in combination with the particular shape of the cylinder head and these elements.
- the end of the coil on the terminal side is fixed to a lug extending the upper part of the connection terminal, presenting a surface looking perpendicular to the axis of the spool, the fixing being done at said notch.
- This configuration allows you to catch a game perpendicular to the longitudinal median plane of the circuit breaker box, if is needed.
- the end of the coil is oriented axially from way out of the cylinder head at said notch, fixing to the connection terminal outside the volume surrounded by the cylinder head.
- the cylinder head is also provided in a material which depends in particular choice of spring. So, it is made of copper or steel, the return spring of the nucleus being for example provided with a weaker force in the first case.
- the core is preferably made of steel, a material more magnetic than brass generally used so far for strong nominal intensities, and which contributes to improving the control of contact separation force.
- the invention also relates to a circuit breaker characterized in that it includes a magnetic sub-assembly as described above.
- the central elements of the subset magnetic are the coil (1) and the magnetic yoke (2), the interior of which is the movable core (3), the fixed core (4), the striker (5) and return spring (6), the latter elements being arranged inside an insulating sheath (7).
- the cylinder head (2) itself has end flanks (8, 9), connected by an axial arm (10) provided with a recess (11) in the vicinity of the sidewall (9), at which takes place the right end (12) of the coil (1).
- This is tangential in appearance to said coil (1), and substantially perpendicular to the other straight end (13), which develops rather in an axial direction.
- the sidewall (8) has a shape such that its insertion is possible at inside the volume of the coil (1), as will be shown more in detail below.
- the fixed contact (15) further comprises a tab (17) providing a surface external looking parallel to the longitudinal axis of the sub-assembly magnetic, on which is fixed the right end (13) of the coil (1).
- connection terminal (18) which is extended by a tab (19) having a shape surface perpendicular to said longitudinal axis, on which the other is fixed straight end (12) of the coil (1), at the level of the recess or the notch (11).
- This terminal (18) has a removable wall (20).
- FIG. 2 is more precise as to the coil (1) / fixed contact (15) connection, while Figure 3 is clearer for the description of the coil (1) / connection terminal (18) link.
- This attachment zone is very close to the actual electrical contact, which is produced at the level of the patch (16), in particular due to the offset of the fixed contact (15) relative to the longitudinal axis of the sub-assembly magnetic, in this case materialized by the striker (5) guided by the fixed core (4).
- a configuration of contact between the right end (12) and the tab (19) is formed in a plane substantially perpendicular to the previous one.
- the fixation takes place in the notch (11) formed in the arm (10) connecting the sides (8, 9) of the cylinder head (2).
- the coil (1) has approximately three turns of section substantially rectangular, which saves interior volume, to reduce the length of wire necessary for its production, and by consequent to reduce the heating while increasing the surfaces polar cores, and therefore the separation force of the contacts.
- the sheet metal of the cylinder head (2), and particularly the arm (10), has undergone a reduction in thickness, to allow the external volume to be increased, and consequently from the internal cylindrical orifice of the coil (1).
- connection terminal (18) has itself increased in thickness along the current path, i.e. at the top, to reduce the heating in this portion of the magnetic sub-assembly.
- Figure 4 not being in perspective, more accurately renders the proportions, and allows to realize the respective thickness of the terminal (18) and cylinder head (2) sheets.
- figure 5 is essentially to represent the subset magnetic of the invention when a coil (1) too long is there established. In this case, only the rounded areas in the vicinity of the right end (13) of the coil (1) must be configured so as not to hinder the expansion of the coil (1).
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Electromagnets (AREA)
- Thin Magnetic Films (AREA)
- Magnetic Heads (AREA)
- Soft Magnetic Materials (AREA)
- Hard Magnetic Materials (AREA)
- Coils Or Transformers For Communication (AREA)
- Hall/Mr Elements (AREA)
Description
- la figure 1 est une vue en perspective éclatée des différents composants du sous-ensemble magnétique selon l'invention ;
- les figures 2 et 3 représentent des perspectives de sous-ensemble assemblé vues selon des angles différents ;
- la figure 4 est une vue en élévation de face dudit sous-ensemble ; et
- la figure 5 représente un détail agrandi du flanc permettant le débordement de la bobine.
Claims (13)
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur, composé d'une part d'une bobine à induction (1) associée à un noyau mobile (3) avec percuteur (5) et ressort de rappel (6) disposés dans une gaine isolante (7), ladite bobine étant montée longitudinalement dans une culasse (2) présentant deux flancs (8, 9) en regard l'un de l'autre, le premier flanc étant muni d'un noyau fixe (4) dans lequel est guidé le percuteur, et d'autre part d'un contact fixe (15) auquel est relié une première extrémité (13) de la bobine et d'une borne de connexion (18) au disjoncteur à laquelle est reliée la seconde extrémité (12) de la bobine, caractérisé en ce que le flanc (8) de la culasse disposé du côté de l'extrémité (13) de la bobine prévue pour être reliée au contact fixe (15) est dimensionné pour pouvoir être au moins partiellement intégré dans le volume intérieur de la bobine afin d'absorber d'éventuelles variations dimensionnelles axiales de celle-ci, dont l'extrémité correspondante est orientée pour que sa fixation au contact fixe, dont la position relativement à la culasse est fixée, permette de rattraper le jeu axial de la bobine.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon la revendication 1, caractérisé en ce que le contact fixe présente un prolongement (14) pour sa fixation axiale au flan de la culasse, muni d'un orifice pour loger une extrémité du noyau fixe (4) et dont la périphérie est également dimensionnée pour pouvoir être partiellement intégré dans le volume intérieur de la bobine.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon l'une des revendications précédentes, caractérisé en ce que l'extrémité (13) de la bobine à relier au contact fixe est orientée suivant une direction sensiblement parallèle à l'axe de la bobine, et fixée sur une patte (17) au contact fixe située à proximité immédiate de la pastille (16) de contact équipant ledit contact fixe, ladite patte présentant à cet effet une surface d'allure parallèle à ladite extrémité.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la section du fil électrique formant la bobine d'induction (1) est d'allure rectangulaire, avec une épaisseur radiale inférieure à la largeur axiale pour augmenter d'une part le volume intérieur enclos par ladite bobine et diminuer d'autre part la longueur de fil nécessaire pour une même longueur de bobine.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon la revendication précédente, caractérisé en ce que la section d'allure rectangulaire du fil étant conservées, la largeur axiale du fil peut encore être augmentée si l'on procède à une diminution d'épaisseur de la tôle formant la culasse (2), dont le volume externe reste inchangé.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon l'une des revendications 4 et 5, caractérisé en ce que les diamètres des noyaux mobile (3) et fixe (4) sont augmentés suite à l'augmentation du volume interne de la bobine, de telle sorte que leurs surfaces polaires en regard l'une de l'autre augmentent.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la culasse (2) a une forme en U, le bras reliant les deux flans d'extrémité étant du même côté de la bobine que le contact fixe et la borne de connexion.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon la revendication précédente, caractérisé en ce que ledit bras comporte une encoche (11) latérale à proximité du flan de la culasse située du côté de la borne de connexion, au niveau de la seconde extrémité de la bobine.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon la revendication précédente, caractérisé en ce que l'extrémité (12) de la bobine, orientée dans un plan perpendiculaire à l'axe de manière à sortir tangentiellement de l'enroulement formant ladite bobine, est fixée à une patte (19) prolongeant la partie supérieure de la borne de connexion, présentant une surface d'allure perpendiculaire à l'axe de la bobine, la fixation se faisant au niveau de ladite encoche.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon la revendication 8, caractérisé en ce que l'extrémité (12) de la bobine est orientée axialement de manière à sortir de la culasse au niveau de ladite encoche, la fixation à la borne de connexion (18) se faisant à l'extérieur du volume entouré par la culasse.
- Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon l'une quelconque des revendications précédentes,
caractérisé en ce que la culasse (2) est en cuivre ou en acier, le ressort de rappel (6) du noyau étant prévu avec une force plus faible dans le premier cas. - Sous-ensemble magnétique pour appareillage électrique modulaire du type disjoncteur selon l'une quelconque des revendications précédentes, caractérisé en ce que le noyau (3,4) est en acier.
- Disjoncteur caractérisé en ce qu'il comprend un sous-ensemble magnétique selon l'une quelconque des revendications 1 à 12.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9807134A FR2779567B1 (fr) | 1998-06-03 | 1998-06-03 | Sous-ensemble magnetique optimise |
FR9807134 | 1998-06-03 | ||
PCT/FR1998/001197 WO1999063564A1 (fr) | 1998-06-03 | 1998-06-10 | Sous-ensemble magnetique optimise |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1084502A1 EP1084502A1 (fr) | 2001-03-21 |
EP1084502B1 true EP1084502B1 (fr) | 2001-10-31 |
Family
ID=9527093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98930816A Expired - Lifetime EP1084502B1 (fr) | 1998-06-03 | 1998-06-10 | Sous-ensemble magnetique optimise |
Country Status (8)
Country | Link |
---|---|
US (1) | US6577217B1 (fr) |
EP (1) | EP1084502B1 (fr) |
AT (1) | ATE208084T1 (fr) |
AU (1) | AU8112098A (fr) |
DE (1) | DE69802309T2 (fr) |
ES (1) | ES2167086T3 (fr) |
FR (1) | FR2779567B1 (fr) |
WO (1) | WO1999063564A1 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2812965B1 (fr) * | 2000-08-10 | 2002-10-11 | Schneider Electric Ind Sa | Actionneur electromagnetique pour appareil interrupteur de protection |
DE10324390A1 (de) * | 2003-05-30 | 2004-12-23 | Abb Patent Gmbh | Elektrische Auslöseeinrichtung für einen elektrischen Schalter |
FR2858106B1 (fr) * | 2003-07-22 | 2005-09-23 | Hager Electro | Sous-ensemble magnetique ameliore et disjoncteur comportant un tel sous-ensemble magnetique |
TWI300575B (en) * | 2003-11-18 | 2008-09-01 | Via Tech Inc | Coplanar transformer |
FR2868596B1 (fr) * | 2004-04-01 | 2006-05-26 | Schneider Electric Ind Sas | Sous-ensemble magnetique d'un appareil electrique interrupteur |
AT509278A1 (de) * | 2008-03-20 | 2011-07-15 | Moeller Gebaeudeautomation Gmbh | Auslösemodul für ein schaltgerät |
JP5276523B2 (ja) * | 2009-06-08 | 2013-08-28 | 三菱電機株式会社 | 回路遮断器 |
DE102009033275B4 (de) * | 2009-07-09 | 2011-05-19 | Siemens Aktiengesellschaft | Leistungsschalter |
FR2962255B1 (fr) * | 2010-07-02 | 2012-07-13 | Schneider Electric Ind Sas | Declencheur electromagnetique pour appareil electrique interrupteur, appareil electrique interrupteur comportant un tel declencheur. |
DE102011014061B4 (de) * | 2011-03-16 | 2013-11-28 | Abb Ag | Leitungsschutzschalter und Verfahren zum Herstellen eines Leitungsschutzschalters |
EP2544207B1 (fr) * | 2011-07-05 | 2017-03-29 | Siemens Aktiengesellschaft | Coupe-circuit avec connexion optimisée de la bobine |
FR2989512B1 (fr) * | 2012-04-17 | 2014-04-25 | Schneider Electric Ind Sas | Ensemble de commande d'une coupure d'une ligne en cas de surintensite dans cette ligne et disjoncteur de protection contre une surintensite dans une ligne |
CN106783430A (zh) * | 2016-11-29 | 2017-05-31 | 贵州新纳电器有限公司 | 一种油阻尼断路器的油阻尼器固定结构 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH670170A5 (fr) * | 1986-04-07 | 1989-05-12 | Sprecher & Schuh Ag | |
FR2629633A1 (fr) * | 1988-03-30 | 1989-10-06 | Hager Electro | Declencheur magnetique pour disjoncteur |
JPH02299120A (ja) * | 1989-05-15 | 1990-12-11 | Matsushita Electric Works Ltd | 配線用遮断器 |
FR2676860B1 (fr) * | 1991-05-21 | 1994-06-17 | Merlin Gerin | Declencheur electromagnetique pour un disjoncteur electrique a bas calibres. |
EP0569652A1 (fr) * | 1992-05-13 | 1993-11-18 | Hager Electro S.A. | Déclencheur magnétique pour disjoncteur, sous-ensemble correspondant et disjoncteurs les incorporant |
DE4445169C2 (de) * | 1994-12-17 | 1998-09-10 | Abb Patent Gmbh | Tauchankermagnetsystem |
FR2753836B1 (fr) * | 1996-09-23 | 1998-10-30 | Declencheur electromagnetique pour appareil electrique de protection |
-
1998
- 1998-06-03 FR FR9807134A patent/FR2779567B1/fr not_active Expired - Fee Related
- 1998-06-10 EP EP98930816A patent/EP1084502B1/fr not_active Expired - Lifetime
- 1998-06-10 US US09/701,925 patent/US6577217B1/en not_active Expired - Lifetime
- 1998-06-10 WO PCT/FR1998/001197 patent/WO1999063564A1/fr active IP Right Grant
- 1998-06-10 DE DE69802309T patent/DE69802309T2/de not_active Expired - Lifetime
- 1998-06-10 AU AU81120/98A patent/AU8112098A/en not_active Abandoned
- 1998-06-10 ES ES98930816T patent/ES2167086T3/es not_active Expired - Lifetime
- 1998-06-10 AT AT98930816T patent/ATE208084T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US6577217B1 (en) | 2003-06-10 |
EP1084502A1 (fr) | 2001-03-21 |
AU8112098A (en) | 1999-12-20 |
ES2167086T3 (es) | 2002-05-01 |
FR2779567A1 (fr) | 1999-12-10 |
DE69802309D1 (de) | 2001-12-06 |
ATE208084T1 (de) | 2001-11-15 |
FR2779567B1 (fr) | 2000-07-13 |
WO1999063564A1 (fr) | 1999-12-09 |
DE69802309T2 (de) | 2002-07-25 |
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