EP0540431B1 - Handling mechanism for tetrapolar circuit breaker - Google Patents
Handling mechanism for tetrapolar circuit breaker Download PDFInfo
- Publication number
- EP0540431B1 EP0540431B1 EP92420366A EP92420366A EP0540431B1 EP 0540431 B1 EP0540431 B1 EP 0540431B1 EP 92420366 A EP92420366 A EP 92420366A EP 92420366 A EP92420366 A EP 92420366A EP 0540431 B1 EP0540431 B1 EP 0540431B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pole
- bar
- auxiliary
- auxiliary pole
- operating mechanism
- 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
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- 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
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- 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
- H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2041—Rotating bridge
- H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2041—Rotating bridge
- H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
- H01H73/045—Bridging contacts
Definitions
- the invention relates to an operating mechanism for an apparatus. electric four-pole disconnection, in particular a circuit breaker comprising three poles respectively associated with the three phases and a pole associated with the neutral, according to the preamble of claims 1, 4 and 8.
- the opening operation mechanism and a circuit breaker is associated with one of the poles.
- this mechanism being associated with the pole central, the lateral forces are distributed so symmetrical on both sides of the mechanism.
- the four-pole circuit breakers due to the asymmetry introduced by the position of the mechanism, there are problems of bending and / or twisting on the coupling means connecting the poles between them.
- Document FR-A-2,478,368, which forms the basis of the preamble of claims 1, 4 and 8, proposes a solution to the aforementioned drawbacks, which consists in adding a mechanism auxiliary to the pole associated with neutral.
- This auxiliary mechanism modulates the resistant torque during the maneuver thanks to a angular offset between the three poles associated with the phases and the pole associated with neutral which differs the actuation of the pole from neutral; this mechanism notably includes a spring of compression to compensate for friction forces and favor the passage from neutral.
- the above solution does not allow the perfect simultaneity of opening and closing maneuvers closing of the four poles; moreover, it does not allow a rationalization of pole manufacturing due to differences between the poles associated with the phases and the pole associated with neutral; finally, the mechanism is subject to significant fatigue phenomena.
- the object of the invention is to remedy the aforementioned drawbacks and allow the manufacture of a four-pole circuit breaker simple, economical, robust and reliable.
- the auxiliary pole In stable open or closed position, the auxiliary pole is transparent to the means of coupling, i.e. the auxiliary pole does not induce any torque and / or bending on the rest of the mechanism. This twist and / or bending on the coupling means and on the main mechanism is present only during opening and closing operations, which represents a fraction tiny part of the life of a switching device, thus avoiding the problems of fatigue of the operating mechanism.
- the free end of the pulling is articulated on a yoke which is in turn articulated around a second transverse axis of the device, and which cooperates with a crank integral in rotation with the bar, the stop being arranged coaxially to the second axis transverse.
- the yoke is provided with a pin which cooperates with a light practiced in the crank; the light includes a radial part and a tangential part with respect to the crank rotation.
- the tie rod is formed by a plate articulated on the yoke by through two lugs, and the stopper is formed by the axis articulation of the yoke around the second transverse axis.
- the four poles can in particular be identical, the means of coupling being formed by two rods diametrically opposite to the transverse axis and cross all the elementary bars right through.
- Figure 1 is a schematic view of a switching device four-pole.
- Figure 2 is a section through a pole.
- FIGS. 3A and 3B illustrate a first embodiment of the invention.
- FIGS. 4A and 4B illustrate a second embodiment of the invention.
- FIGS. 5A, 5B, 5C illustrate a third embodiment of the invention.
- FIG. 6 represents, with reference to the third mode of realization, a perspective of the auxiliary mechanism associated with fourth pole.
- a four-pole circuit breaker has three poles P1, P2 and P3 associated with the network phase conductors, and a fourth pole N associated with the neutral conductor.
- the fourth breaker poles are housed in housings rectangular shaped molded insulating material, placed side by side rib along the transverse axis XX '; these boxes can in particular be in the form of four housings identical, each pole having its own housing, or even under the shape of two cases, a first monobloc case containing the poles P1, P2 and P3 and a second box for the pole N.
- main pole Pp P2 in FIG. 1
- the pole furthest from the main pole Pp being designated “the pole auxiliary Pa "(Pa being N in FIG. 1).
- the mechanism of circuit breaker operation has a main mechanism Mp associated with the main pole Pp, and an auxiliary mechanism Ma associated with the auxiliary pole Pa, and intended to remedy the bending and / or torsion phenomena introduced by the asymmetrical position of the main mechanism Mp.
- a Mc coupling mechanism links the main mechanism Mp to auxiliary mechanism Ma.
- the main mechanism Mp is actuated in a known manner, either by manual action by means of a control lever (not shown), or via a trigger (not shown), magnetothermal or electronic.
- FIG. 2 represents, a cutoff pole P1 particularly well suited to the invention due to its modularity.
- the four poles P1, P2, P3 and N are strictly identical and are adapted so as to receive or not a main mechanism Mp or an auxiliary mechanism Ma, which allows a very thorough rationalization of the manufacturing of circuit breakers: it is possible in particular from a single line of pole manufacturing, assembling these poles to make one two-pole, three-pole or four-pole circuit breaker.
- the breaking pole P1 is housed in a housing 8 made of material molded insulation, in which are fitted two cut 6a and 6b. Pole P1 has a rotary contact 3 to double break which cooperates with two fixed contacts 2a and 2b respectively connected to connection pads 7a and 7b.
- the rotary contact 3 is housed in an elementary rotary bar of switching 1 made of insulating material which is guided in rotation around the axis ZZ '. Rotary contact 3 is coupled to bar 1 via two contact pressure springs 4a and 4b.
- the bar 1 is pierced with two diametrically opposed holes by relative to the transverse axis ZZ ', and adapted to receive two transverse rods 5a and 5b which ensure the coupling Mc mechanics of the four poles P1, P2, P3 and N right through, and by the same, the coupling of the main mechanism Mp with the auxiliary mechanism Ma.
- FIGS. 3A and 3B show a rotary contact 3 with single cut-off, in the closed and open from the pole, the second cut having been replaced by a braid 9 which connects the rotary contact 3 to the connection pad 7b.
- the rotary contact 3, housed in the rotary bar 1, is coupled to the bar 1 by a contact pressure spring 4, which when the pole is closed, exerts a reaction force F on the bar 1 as shown in Figure 3A.
- a tension spring 10 is attached at one of its ends to a hook 11 secured to the bar 1 and located on a radius of the bar 1; the other end of the spring 10 is attached to a anchoring 12 secured to the housing 8, so that the spring 10, in the closed position of the pole, either straight and come practically brush against a stop 13 integral with the bar 1 and located on the axis of rotation ZZ 'of the bar 1.
- the tension spring 10 tensioned so straight forms a slight angle ⁇ with the diameter of the bar passing through the hook 11, so as to exert a torque C on the bar in the direction opposite to the force F, i.e. keep the contacts closed.
- the auxiliary mechanism In the open position, the auxiliary mechanism is again transparent on the rest of the operating mechanism.
- FIGS. 4A and 4B illustrate a second embodiment of the auxiliary mechanism associated with a double rotary contact break.
- the spring means of the mechanism include a tie rod 25 and a tension spring 20 placed end to end by via a pivot 24.
- the free end of the tie rod is coupled by a hinge 27 at the end of a crank 26 secured to the elementary bar 1.
- the free end of the spring 20 is attached to an anchor 22 secured to the housing.
- the assembly pulling 25 / spring 20 is straight and forms a small angle ⁇ with the diameter of the bar 1 passing through the joint 27.
- the pivot 24 is in the vicinity a stop 23 integral with the crank 26, and arranged coaxially to the transverse axis XX '.
- the whole pulling 25 / spring 20 exerts a torque on the bar 1 which opposes the force developed by the contact pressure springs 4a, 4b on the bar 1.
- the spring means of the auxiliary mechanism are no longer directly integral with the bar 1.
- the housing 8 of the pole N is provided with a fixed plate 31 laterally by screws 40 and 41, which covers the top of the pole P.
- the plate 31 carries an axis of rotation 33 along the axis YY 'on which is mounted a yoke 34.
- the yoke 34 is guided in rotation around the axis YY 'via a crank 36 integral with the bar 1; this guidance is provided by a lateral pin 37 secured to the yoke 34, which is housed in a light 38 in the crank 36.
- the spring means of the auxiliary mechanism include a tie rod 35 formed by a plate and a spring 30 attached end at the end near the axis of rotation 33.
- the free end of the plate 35 is articulated on the sides vertical of the yoke 34 by means of two lugs 39, and the free end of the spring 30 is attached to an anchor 32 of plate 31.
- the spring 30 / plate 35 assembly In the closed position of the pole, illustrated in FIG. 5A, the spring 30 / plate 35 assembly is rectilinear and forms a angle ⁇ with the straight line passing through the axis of rotation 33 and the anchor 32.
- the spring 30 then exerts a torque which is opposed to the force developed by the contact pressure springs 4a and whose value is such that it leaves a clearance 43 between the bar 1 and the rotary contact 3, which serves to guard against wear contacts 2a, 2b, 3a, 3b.
- the light 38 formed in the crank 36 has a part radial 38A and a tangential part 38B with respect to the crank rotation.
- the radial part 38A of the light 38 allows a significant reduction in the angular range useful during the transition between a pulling 35 / spring assembly 30 straight in closed position, and a pulling assembly 35 / spring 30 broken in open position; it also allows reduce the length of the spring 30.
- the tangential part 38B of light 38 allows bar 1 to continue its course opening without having to drive the yoke 34.
- the arrangement of the auxiliary mechanism of this third mode of realization is particularly advantageous because it presents a very small footprint and does not require adjustment particular of the angle ⁇ due to the multiplication of the useful angular range.
- the means of Mc coupling are made by elementary bars secured by means of two rods 5a, 5b; we can modify these coupling means, for example by call to a single bar for the four poles, or even a single bar for the three poles associated with the phases coupled to a bar for the pole associated with the neutral, without depart from the scope of the invention as claimed.
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- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
L'invention concerne un mécanisme de manoeuvre pour appareil
électrique de coupure tétrapolaire, notamment un disjoncteur
comprenant trois pôles respectivement associés aux trois phases
et un pôle associé au neutre, selon le préambule des revendications 1, 4 et 8.The invention relates to an operating mechanism for an apparatus.
electric four-pole disconnection, in particular a circuit breaker
comprising three poles respectively associated with the three phases
and a pole associated with the neutral, according to the preamble of
D'une manière générale, le mécanisme de manoeuvre d'ouverture et de fermeture d'un disjoncteur est associé à l'un des pôles. Pour les disjoncteurs tripolaires, ce mécanisme étant associé au pôle central, les efforts latéraux sont répartis de manière symétrique de part et d'autre du mécanisme. Pour les disjoncteurs tétrapolaires, du fait de la dissymétrie introduite par la position du mécanisme, se pose des problèmes de flexion et/ou de torsion sur les moyens de couplage reliant les pôles entre eux.In general, the opening operation mechanism and a circuit breaker is associated with one of the poles. For three-pole circuit breakers, this mechanism being associated with the pole central, the lateral forces are distributed so symmetrical on both sides of the mechanism. For the four-pole circuit breakers, due to the asymmetry introduced by the position of the mechanism, there are problems of bending and / or twisting on the coupling means connecting the poles between them.
Le document FR-A-2.478.368, qui forme la base du préambule des revendications 1, 4 et 8, propose une solution aux
inconvénients précités, qui consiste à ajouter un mécanisme
auxiliaire au pôle associé au neutre. Ce mécanisme auxiliaire
module le couple résistant au cours de la manoeuvre grâce à un
décalage angulaire entre les trois pôles associés aux phases et
le pôle associé au neutre qui diffère l'actionnement du pôle du
neutre; ce mécanisme comprend notamment un ressort de
compression pour compenser les efforts de frottement et
favoriser le passage du point mort.Document FR-A-2,478,368, which forms the basis of the preamble of
De part sa conception, la solution précitée n'autorise pas la simultanéité parfaite des manoeuvres d'ouverture et de fermeture des quatre pôles; de plus, elle ne permet pas une rationalisation de la fabrication des pôles du fait des différences existant entre les pôles associés aux phases et le pôle associé au neutre; finalement, le mécanisme est soumis à des phénomènes de fatigue importants.Due to its design, the above solution does not allow the perfect simultaneity of opening and closing maneuvers closing of the four poles; moreover, it does not allow a rationalization of pole manufacturing due to differences between the poles associated with the phases and the pole associated with neutral; finally, the mechanism is subject to significant fatigue phenomena.
L'invention a pour objet de remédier aux inconvénients précités et de permettre la fabrication d'un disjoncteur tétrapolaire simple, économique, robuste et fiable.The object of the invention is to remedy the aforementioned drawbacks and allow the manufacture of a four-pole circuit breaker simple, economical, robust and reliable.
Le mécanisme de manoeuvre de l'invention est décrit dans l'une des revendications 1, 4
ou 8.The operating mechanism of the invention is described in one of
En position stable ouverte ou fermée, le pôle auxiliaire est transparent pour les moyens de couplage, c'est à dire que le pôle auxiliaire n' induit aucun couple de torsion et/ou de flexion sur le reste du mécanisme. Cette torsion et/ou flexion sur les moyens de couplage et sur le mécanisme principal est présente uniquement lors des manoeuvres d'ouverture et de fermeture, ce qui représente une fraction infime de la vie d'un appareil de coupure, évitant ainsi les problèmes de fatigue du mécanisme de manoeuvre.In stable open or closed position, the auxiliary pole is transparent to the means of coupling, i.e. the auxiliary pole does not induce any torque and / or bending on the rest of the mechanism. This twist and / or bending on the coupling means and on the main mechanism is present only during opening and closing operations, which represents a fraction tiny part of the life of a switching device, thus avoiding the problems of fatigue of the operating mechanism.
Selon un premier mode de réalisation, les moyens ressorts incluent un ressort de traction disposé dans un plan perpendiculaire à la direction transversale, dont une première extrémité est couplée en rotation au barreau du pôle auxiliaire et dont la seconde extrémité est ancrée à un point fixe de l'appareil, le ressort de traction prenant alternativement les formes suivantes:
- d'une part, une ligne droite qui passe au voisinage d'une butée fixe, disposée de manière coaxiale au premier axe transversal, lorsque l'appareil termine sa course de fermeture et lorsqu'il est fermé;
- d'autre part, une ligne brisée au niveau de la butée lorsque l'appareil a commencé sa course d'ouverture et lorsqu'il est ouvert.
- on the one hand, a straight line which passes in the vicinity of a fixed stop, arranged coaxially to the first transverse axis, when the device ends its closing stroke and when it is closed;
- on the other hand, a broken line at the stop when the device has started its opening stroke and when it is open.
Selon un second mode de réalisation, les moyens ressorts incluent un tirant rigide et un ressort de traction mis bout à bout par l'intermédiaire d'une articulation, l'ensemble tirant/ressort étant disposé dans un plan perpendiculaire à l'axe transversal; l'extrémité libre du tirant est couplé en rotation au barreau du pôle auxiliaire, et l'extrémité libre du ressort est ancrée à un point fixe de l'appareil, l'ensemble tirant/ressort prend alternativement les formes suivantes:
- d'une part une ligne droite qui passe au voisinage d'une butée fixe, disposée de manière coaxiale au premier axe transversal, lorsque l'appareil termine sa course d'ouverture et lorsqu'il est fermé, l'articulation étant à la hauteur de la butée;
- d'autre part, une ligne brisée au niveau de l'articulation autour de la butée lorsque l'appareil a commencé sa course d'ouverture et lorsqu'il est ouvert.
- on the one hand a straight line which passes in the vicinity of a fixed stop, arranged coaxially to the first transverse axis, when the device ends its opening stroke and when it is closed, the joint being at the height of the stop;
- on the other hand, a broken line at the joint around the stop when the device has started its opening stroke and when it is open.
Selon le troisième mode de réalisation, l'extrémité libre du tirant est articulée sur une chape qui est à son tour articulée autour d'un second axe transversal de l'appareil, et qui coopère avec une manivelle solidaire en rotation avec le barreau, la butée étant disposée de manière coaxiale au second axe transversal.According to the third embodiment, the free end of the pulling is articulated on a yoke which is in turn articulated around a second transverse axis of the device, and which cooperates with a crank integral in rotation with the bar, the stop being arranged coaxially to the second axis transverse.
De préférence, la chape est munie d'un pion qui coopère avec une lumière pratiquée dans la manivelle; la lumière comprend une partie radiale et une partie tangentielle par rapport à la rotation de la manivelle.Preferably, the yoke is provided with a pin which cooperates with a light practiced in the crank; the light includes a radial part and a tangential part with respect to the crank rotation.
Le tirant est formé par une plaquette articulée sur la chape par l'intermédiaire de deux ergots, et la butée est formée par l'axe d'articulation de la chape autour du second axe transversal.The tie rod is formed by a plate articulated on the yoke by through two lugs, and the stopper is formed by the axis articulation of the yoke around the second transverse axis.
Les quatre pôles peuvent notamment être identiques, les moyens de couplage étant formés par deux tringles diamétralement opposées par rapport à l'axe transversal et traversent l'ensemble des barreaux élémentaires de part en part.The four poles can in particular be identical, the means of coupling being formed by two rods diametrically opposite to the transverse axis and cross all the elementary bars right through.
D'autres avantages et caractéristiques préférées ressortiront plus clairement de la description qui va suivre, en référence aux dessins annéxés dans lesquels:Other preferred advantages and features will become more apparent clearly from the description which follows, with reference to attached drawings in which:
La figure 1 est une vue schématique d'un appareil de coupure tétrapolaire.Figure 1 is a schematic view of a switching device four-pole.
La figure 2 est une coupe à travers un pôle.Figure 2 is a section through a pole.
Les figures 3A et 3B illustrent un premier mode de réalisation de l'invention.FIGS. 3A and 3B illustrate a first embodiment of the invention.
Les figures 4A et 4B illustrent un second mode de réalisation de l'invention.FIGS. 4A and 4B illustrate a second embodiment of the invention.
Les figures 5A,5B,5C illustrent un troisième mode de réalisation de l'invention. FIGS. 5A, 5B, 5C illustrate a third embodiment of the invention.
La figure 6 représente, en référence au troisième mode de réalisation, une perspective du mécanisme auxiliaire associé au quatrième pôle.FIG. 6 represents, with reference to the third mode of realization, a perspective of the auxiliary mechanism associated with fourth pole.
Sur la figure 1, un disjoncteur tétrapolaire comporte trois pôles P1,P2 et P3 associés aux conducteurs de phase du réseau, et un quatrième pôle N associé au conducteur neutre. Les quatre pôles du disjoncteur sont logés dans des boítiers parallélépipèdiques en matériau isolant moulé, placés côte à côte selon l'axe transversal XX'; ces boítiers peuvent notamment se présenter sous la forme de quatre boítiers identiques, chaque pôle ayant son propre boítier, ou encore sous la forme de deux boítiers, un premier boítier monobloc renfermant les pôles P1,P2 et P3 et un deuxième boítier pour le pôle N.In Figure 1, a four-pole circuit breaker has three poles P1, P2 and P3 associated with the network phase conductors, and a fourth pole N associated with the neutral conductor. The fourth breaker poles are housed in housings rectangular shaped molded insulating material, placed side by side rib along the transverse axis XX '; these boxes can in particular be in the form of four housings identical, each pole having its own housing, or even under the shape of two cases, a first monobloc case containing the poles P1, P2 and P3 and a second box for the pole N.
L'un des deux pôles P2 ou P3 adjacents au plan de symétrie AA sera désigné "pôle principal Pp"(Pp étant P2 sur la figure 1), le pôle le plus éloigné du pôle principal Pp étant désigné "le pôle auxiliaire Pa" (Pa étant N sur la figure 1). Le mécanisme de manoeuvre du disjoncteur comporte un mécanisme principal Mp associé au pôle principal Pp, et un mécanisme auxiliaire Ma associé au pôle auxiliaire Pa, et destiné à remédier aux phénomènes de flexion et/ou de torsion introduits par la position dissymétrique du mécanisme principal Mp.One of the two poles P2 or P3 adjacent to the plane of symmetry AA will be designated "main pole Pp" (Pp being P2 in FIG. 1), the pole furthest from the main pole Pp being designated "the pole auxiliary Pa "(Pa being N in FIG. 1). The mechanism of circuit breaker operation has a main mechanism Mp associated with the main pole Pp, and an auxiliary mechanism Ma associated with the auxiliary pole Pa, and intended to remedy the bending and / or torsion phenomena introduced by the asymmetrical position of the main mechanism Mp.
Un mécanisme de couplage Mc relie le mécanisme principal Mp au mécanisme auxiliaire Ma.A Mc coupling mechanism links the main mechanism Mp to auxiliary mechanism Ma.
La mécanisme principal Mp est actionné de façon connue, soit par action manuelle au moyen d'une manette de commande (non représenté), soit par l'intermédiaire d'un déclencheur (non représenté), magnétothermique ou électronique.The main mechanism Mp is actuated in a known manner, either by manual action by means of a control lever (not shown), or via a trigger (not shown), magnetothermal or electronic.
La figure 2 représente, un pôle de coupure P1 particulièrement bien adapté à l'invention du fait de sa modularité. En d'autres termes, les quatre pôles P1,P2,P3 et N sont strictement identiques et sont adaptés de manière à recevoir ou non un mécanisme principal Mp ou un mécanisme auxiliaire Ma, ce qui permet une rationalisation très poussée de la fabrication des disjoncteurs: on peut notamment à partir d'une seule ligne de fabrication de pôles, assembler ces pôles pour en faire un disjoncteur bipolaire, tripolaire ou tétrapolaire.FIG. 2 represents, a cutoff pole P1 particularly well suited to the invention due to its modularity. In others terms, the four poles P1, P2, P3 and N are strictly identical and are adapted so as to receive or not a main mechanism Mp or an auxiliary mechanism Ma, which allows a very thorough rationalization of the manufacturing of circuit breakers: it is possible in particular from a single line of pole manufacturing, assembling these poles to make one two-pole, three-pole or four-pole circuit breaker.
Le pôle de coupure P1 est logé dans un boítier 8 en matériau
isolant moulé, dans lequel sont aménagées deux chambres de
coupure 6a et 6b. Le pôle P1 comporte un contact rotatif 3 à
double coupure qui coopère avec deux contacts fixes 2a et 2b
respectivement reliés aux plages de connexion 7a et 7b. Le
contact rotatif 3 est logé dans un barreau élémentaire rotatif de
commutation 1 en matériau isolant qui est guidé en rotation
autour de l'axe ZZ'. Le contact rotatif 3 est couplé au barreau 1
par l'intermédiaire de deux ressorts de pression de contact 4a et
4b.The breaking pole P1 is housed in a
On pourra avantageusement se reporter au document EP-A-314.540 pour de plus amples explications à propos du pôle de coupure, ou pour d'autres modes de réalisation du pôle de coupure.Advantageously, reference may be made to document EP-A-314.540 for further explanations about the breaking pole, or for other embodiments of the breaking pole.
Le barreau 1 est percé de deux trous diamétralement opposés par
rapport à l'axe transversal ZZ', et adpatés à recevoir deux
tringles transversales 5a et 5b qui assurent le couplage
mécanique Mc des quatre pôles P1,P2,P3 et N de part en part, et
par la même, le couplage du mécanisme principal Mp avec le
mécanisme auxiliaire Ma.The
En référence aux figures 3A et 3B, nous allons aborder un premier
mode de réalisation du mécanisme auxiliaire Ma associé au pôle
auxiliaire Pa. Les figures 3A et 3B montrent un contact rotatif 3
à simple coupure, respectivement dans les positions fermée et
ouverte du pôle, la deuxième coupure ayant été remplacée par une
tresse 9 qui relie le contact rotatif 3 à la plage de connexion
7b. Le contact rotatif 3, logé dans le barreau rotatif 1, est
couplé au barreau 1 par un ressort de pression de contact 4, qui
lorsque le pôle est fermé, exerce une force F de réaction sur le
barreau 1 comme indiqué sur la figure 3A.With reference to Figures 3A and 3B, we will discuss a first
embodiment of the auxiliary mechanism Ma associated with the pole
auxiliary Pa. FIGS. 3A and 3B show a
Un ressort de traction 10 est attaché à l'une de ses extrémités à
un crochet 11 solidaire du barreau 1 et situé sur un rayon du
barreau 1; l'autre extrémité du ressort 10 est attachée à un
ancrage 12 solidaire du boítier 8, de manière à ce que le ressort
10, dans la position fermée du pôle, soit rectiligne et vienne
pratiquement frôler une butée 13 solidaire du barreau 1 et situé
sur l'axe de rotation ZZ' du barreau 1.A
En d'autres termes, le ressort de traction 10 tendu de manière
rectiligne forme un léger angle α avec le diamètre du barreau
passant par le crochet 11, de manière à exercer un couple C sur le
barreau dans la direction opposée à la force F, c'est à dire à
tenir les contacts fermés.In other words, the
Une sélection appropriée des caractéristiques des ressorts 4b et
10 autorise la transparence du mécanisme de manoeuvre lorsque
l'appareil est fermé.An appropriate selection of the characteristics of the
Lorsque les tringles transversales 5a et 5b subissent un
mouvement de rotation autour de l'axe XX', sous l'effet du
mécanisme principal Mp, le barreau 1 se met en rotation pour
aboutir à la position ouverte, illustrée à la figure 3B. Dès que
le barreau 1 a entamé son mouvement de rotation, la partie
intermédiaire du ressort 10 vient s'appuyer contre la butée 13 en
formant une ligne brisée d'angle β , ce qui a pour effet de
supprimer le couple C sur le barreau 1; en d'autres termes, dès la
séparation des contacts, le ressort de traction 10 cesse de
s'opposer à l'ouverture des contacts.When the
En position ouverte, le mécanisme auxiliaire est à nouveau transparent sur le reste du mécanisme de manoeuvre. In the open position, the auxiliary mechanism is again transparent on the rest of the operating mechanism.
Les figures 4A et 4B illustrent un second mode de réalisation du
mécanisme auxiliaire associé à un contact rotatif à double
coupure. Les moyens ressorts du mécanisme comprennent un tirant
25 et un ressort de traction 20 mis bout à bout par
l'intermédiaire d'un pivot 24. L'extrémité libre du tirant est
couplée par une articulation 27 à l'extrémité d'une manivelle 26
solidaire du barreau élémentaire 1. L'extrémité libre du ressort
20 est attachée à un ancrage 22 solidaire du boítier. En position
fermée des contacts, l'ensemble tirant 25/ ressort 20 est
rectiligne et forme un angle α faible avec le diamètre du barreau
1 passant par l'articulation 27. Le pivot 24 est au voisinage
d'une butée 23 solidaire de la manivelle 26, et disposée de
manière coaxiale à l'axe transversal XX'. L'ensemble tirant
25/ressort 20 exerce un couple sur le barreau 1 qui s'oppose à la
force développée par les ressorts de pression de contacts 4a,4b
sur le barreau 1.FIGS. 4A and 4B illustrate a second embodiment of the
auxiliary mechanism associated with a double rotary contact
break. The spring means of the mechanism include a
Dès que le barreau 1 est animé d'un mouvement de rotation par
l'intermédiaire des tringles 5a,5b en vue de l'ouverture des
contacts, le pivot 24 vient s'appuyer sur la butée 23, ce qui a
pour effet de supprimer le couple développé par l'ensemble
tirant 25/ressort 20, dès la séparation des contacts et lorsque
les contacts sont ouverts, le tirant 25 et le ressort 20 forme
alors un angle β au niveau du pivot 24. Inversement, lors du cycle
de fermeture des contacts, l'ensemble tirant 25/ressort 20
redevient rectiligne et exerce à nouveau un couple sur le barreau
1 dès que le pivot 24 se sépare de la butée 23, c'est à dire dès que
les contacts entrent effectivement en contact.As soon as the
L'avantage de ce second mode de réalisation par rapport au
premier mode de réalisation réside dans le fait que disposant
d'une plage utile angulaire supérieure, de par la manivelle 26,
le réglage de l'angle α est moins critique pour le bon
fonctionnement du pôle de coupure.The advantage of this second embodiment compared to
first embodiment resides in the fact that having
an upper angular useful range, by the
Le troisième mode de réalisation décrit en référence aux figures 5A,5B,5C et 6 est le mode de réalisation préféré de l'invention. The third embodiment described with reference to the figures 5A, 5B, 5C and 6 is the preferred embodiment of the invention.
Selon ce mode comme décrit ci-après, les moyens ressorts du
mécanisme auxiliaire ne sont plus directement solidaires du
barreau 1.According to this mode as described below, the spring means of the
auxiliary mechanism are no longer directly integral with the
Le boítier 8 du pôle N est muni d'une platine 31 fixée
latéralement par des vis 40 et 41, qui recouvre le dessus du pôle
P. La platine 31 porte un axe de rotation 33 selon l'axe YY' sur
lequel est montée une chape 34. La chape 34 est guidée en rotation
autour de l'axe YY' par l'intermédiaire d'une manivelle 36
solidaire du barreau 1; ce guidage est assuré par un pion latéral
37 solidaire de la chape 34, qui vient se loger dans une lumière
38 pratiquée dans la manivelle 36.The
Les moyens ressorts du mécanisme auxiliaire comprennent un
tirant 35 formée par une plaquette et un ressort 30 attachés bout
à bout au voisinage de l'axe de rotation 33.The spring means of the auxiliary mechanism include a
L'extrémité libre de la plaquette 35 est articulée sur les flancs
verticaux de la chape 34 par l'intermédiaire de deux ergots 39,
et l'extrémité libre du ressort 30 est attachée à un ancrage 32 de
la platine 31.The free end of the
En position de fermeture du pôle, illustrée à la figure 5A,
l'ensemble ressort 30/plaquette 35 est rectiligne et forme un
angle α avec la droite passant par l'axe de rotation 33 et
l'ancrage 32. Le ressort 30 exerce alors un couple qui s'oppose à
la force développée par les ressorts de pression de contact 4a et
dont la valeur est telle qu'elle laisse subsister un jeu 43 entre
le barreau 1 et le contact rotatif 3, qui sert de garde à l'usure
des contacts 2a,2b,3a,3b. On retrouve par ailleurs un jeu 44
entre le pion 37 et une première extrémité de la lumière 38.In the closed position of the pole, illustrated in FIG. 5A,
the
Dès que le barreau 1 est entraíné en rotation par l'intermédiaire
des tringles 5a et 5b, comme illustré à la figure 5B, la chape 34
commence son mouvement de rotation autour de l'axe 33,
entraínant ainsi la plaquette 35. As soon as the
Dès la séparation des contacts, la plaquette 35 vient se poser
sur l'axe 33, ce qui a pour effet de supprimer le couple exercé
sur la chape 35, et par voie de conséquence sur la manivelle 36 et
sur le barreau 1.As soon as the contacts are separated, the
En position ouverte du pôle N comme illustré à la figure 5C, la
plaquette 35 et le ressort forme un angle β et le pion 37 a
rejoint la seconde extrémité de la lumière 38.In the open position of the N pole as illustrated in Figure 5C, the
La lumière 38 pratiquée dans la manivelle 36 présente une partie
radiale 38A et une partie tangentielle 38B par rapport à la
rotation de la manivelle. La partie radiale 38A de la lumière 38
permet une démultiplication importante de la plage angulaire
utile lors de la transition entre un ensemble tirant 35/ressort
30 rectiligne en position fermée, et un ensemble tirant
35/ressort 30 brisé en position ouverte; elle permet aussi de
réduire la longueur du ressort 30. La partie tangentielle 38B de
la lumière 38 permet au barreau 1 de poursuivre sa course
d'ouverture sans avoir à entraíner la chape 34.The light 38 formed in the
L'agencement du mécanisme auxilaire de ce troisième mode de réalisation est particulièrement avantageux, car il présente un encombrement très faible et ne requiert pas de réglage particulier de l'angle α du fait de la démultiplication de la plage angulaire utile. De plus, le fait que le mécanisme auxiliaire vienne s'adapter sur un pôle standard, c'est à dire un pôle identique à ceux associés aux phases,permet une très grande rationalisation de la fabrication des pôles.The arrangement of the auxiliary mechanism of this third mode of realization is particularly advantageous because it presents a very small footprint and does not require adjustment particular of the angle α due to the multiplication of the useful angular range. In addition, the fact that the mechanism auxiliary comes to fit on a standard pole, i.e. a identical pole to those associated with the phases, allows a very large rationalization of pole manufacturing.
Dans les modes de réalisation décrits ci-dessus, les moyens de
couplage Mc sont réalisés par des barreaux élémentaires
solidarisés par l'intermédiaire de deux tringles 5a,5b; on
pourra modifier ces moyens de couplage, par exemple en faisant
appel à un barreau unique pour les quatre pôles, ou encore un
barreau unique pour les trois pôles associés aux phases couplé à
un barreau pour le pôle associé au neutre, sans pour autant
sortir du cadre de l'invention telle que revendiquée.In the embodiments described above, the means of
Mc coupling are made by elementary bars
secured by means of two
Claims (15)
- An operating mechanism for a four-pole electrical breaking apparatus, notably a circuit breaker, designed to simultaneously operate the four poles (N, P1, P2, P3) arranged side by side according to a transverse direction, one of the two poles adjacent to the symmetry plane of the circuit breaker being designated as the main pole (Pp); the pole furthest away from the main pole being designated as the auxiliary pole (Pa), the auxiliary pole comprising :a rotary elementary switching bar (1) guided in rotation around a first transverse axis (XX'),at least one stationary contact (2a, 2b); anda single or double-break rotary contact (3), coupled in rotation to said corresponding bar (1) by means of contact pressure springs (4a, 4b);a main opening and closing mechanism (Mp), associated to said main pole (Pp),an auxiliary mechanism (Ma) associated to said auxiliary pole (Pa) and comprising spring means (10),coupling means (5a, 5b) between said main mechanism (Mp) and said auxiliary mechanism (Ma);
- The operating mechanism according to claim 1, characterized in that a first end (11) of the traction spring is coupled in rotation to the bar of the auxiliary pole and that the second end (12) of the traction spring is secured to a fixed point of the apparatus, said traction spring (10) being arranged to alternatively take the following shapes :on the one hand, a straight line passing close to a fixed stop (13) when the apparatus completes its closing travel and when it is closed;on the other hand, a broken line at the level of said stop (13) when the apparatus has begun its opening travel and when it is open.
- The operating mechanism according to claim 2, characterized in that said first end (11) of the traction spring is articulated on an attachment securedly united to the bar (1) and arranged on a radius of the bar, said stop (13) also being securedly united to the bar and arranged in a manner coaxial to the first transverse axis (XX').
- An operating mechanism for a four-pole electrical breaking apparatus, notably a circuit breaker, designed to simultaneously operate the four poles (N, P1, P2, P3) arranged side by side according to a transverse direction, one of the two poles adjacent to the symmetry plane of the circuit breaker being designated as the main pole (Pp); the pole furthest away from the main pole being designated as the auxiliary pole (Pa), the auxiliary pole comprising :a rotary elementary switching bar (1) guided in rotation around a first transverse axis (XX'),at least one stationary contact (2a, 2b); anda single or double-break rotary contact (3), coupled in rotation to said corresponding bar (1) by means of contact pressure springs (4a, 4b);a main opening and closing mechanism (Mp), associated to said main pole (Pp),an auxiliary mechanism (Ma) associated to said auxiliary pole (Pa) and comprising spring means (20),coupling means (5a, 5b) between said main mechanism (Mp) and said auxiliary mechanism (Ma);
- The operating mechanism according to claim 4, characterized in that said articulation (27) is located at the end of a crank (26) securedly united to the bar of the auxiliary pole.
- The operating mechanism according to claim 4 or 5, characterized in that the tie-rod/spring assembly is arranged to alternatively take the following shapes :on the one hand, a straight line passing close to a fixed stop (23) when the apparatus completes its opening travel and when it is closed, said articulation (24) being at the height of said stop;on the other hand, a broken line at the level of the articulation (24) around said stop (23) when the apparatus has begun its opening travel and when it is open.
- The operating mechanism according to claim 6, characterized in that said stop (23) is securedly united to the bar (1) and arranged in a manner coaxial to the first transverse axis (XX').
- An operating mechanism for a four-pole electrical breaking apparatus, notably a circuit breaker, designed to simultaneously operate the four poles (N, P1, P2, P3) arranged side by side according to a transverse direction, one of the two poles adjacent to the symmetry plane of the circuit breaker being designated as the main pole (Pp); the pole furthest away from the main pole being designated as the auxiliary pole (Pa), the auxiliary pole comprising :a rotary elementary switching bar (1) guided in rotation around a first transverse axis (XX'),at least one stationary contact (2a, 2b); anda single or double-break rotary contact (3), coupled in rotation to said corresponding bar (1) by means of contact pressure springs (4a, 4b);a main opening and closing mechanism (Mp), associated to said main pole (Pp),an auxiliary mechanism (Ma) associated to said auxiliary pole (Pa) and comprising spring means (30),coupling means (5a, 5b) between said main mechanism (Mp) and said auxiliary mechanism (Ma);
- The operating mechanism according to claim 8, characterized in that the plate/spring assembly is arranged to alternatively take the following shapes :on the one hand a straight line passing close to a fixed stop (33) when the apparatus completes its closing travel and when it is closed;on the other hand a broken line around said stop (33) when the apparatus has begun its opening travel and when it is open.
- The operating mechanism according to claim 9, characterized in that said stop (33) is arranged in a manner coaxial to said second transverse axis (YY').
- The operating mechanism according to one of the claims 8 to 10, characterized in that the cap (34) s provided with a pin (37) which cooperates with an aperture (38) provided in the crank (36).
- The operating mechanism according to claim 11, characterized in that said aperture (38) comprises a radial part (38A) and a tangential part (38B) with respect to rotation of the crank (36).
- The operating mechanism according to one of the claims 10 to 12, characterized in that the plate is articulated on the cap (34) by means of two pins (39), said stop (33) being formed by the spindle for articulation of the cap around said second transverse axis (YY').
- The operating mechanism according to one of the claims 1 to 13, characterized in that the elementary bar (1) of the auxiliary pole is coupled to the bars of the other three poles.
- The operating mechanism according to one of the claims 1 to 13, characterized in that the four poles are identical and that the coupling means (Mc) are formed by two connecting rods (5a, 5b) diametrically opposite with respect to the first transverse axis (XX') and passing from one side to the other through all the elementary bars.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9113457 | 1991-10-29 | ||
FR9113457A FR2683089B1 (en) | 1991-10-29 | 1991-10-29 | OPERATING MECHANISM FOR TETRAPOLAR CIRCUIT BREAKER. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0540431A1 EP0540431A1 (en) | 1993-05-05 |
EP0540431B1 true EP0540431B1 (en) | 1998-01-14 |
Family
ID=9418505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92420366A Expired - Lifetime EP0540431B1 (en) | 1991-10-29 | 1992-10-20 | Handling mechanism for tetrapolar circuit breaker |
Country Status (7)
Country | Link |
---|---|
US (1) | US5357066A (en) |
EP (1) | EP0540431B1 (en) |
JP (1) | JP3352733B2 (en) |
KR (1) | KR930008898A (en) |
DE (1) | DE69224035T2 (en) |
ES (1) | ES2112306T3 (en) |
FR (1) | FR2683089B1 (en) |
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KR101539832B1 (en) * | 2009-09-18 | 2015-07-27 | 슈나이더 일렉트릭 인더스트리스 에스에이에스 | Single-pole cutoff unit comprising a rotary contact bridge, cutoff device comprising such a unit, and circuit breaker comprising such a device |
US9953789B2 (en) | 2009-09-18 | 2018-04-24 | Schneider Electric Industries Sas | Single-pole breaking unit comprising a rotary contact bridge, and a switchgear device, and circuit breaker comprising such a unit |
FR2968828B1 (en) * | 2010-12-13 | 2012-12-21 | Schneider Electric Ind Sas | CUTTING DEVICE HAVING MULTIPLE UNIPOLAR CUT BLOCKS AND HAVING A SINGLE ACTUATION MECHANISM OF SAID BLOCKS |
CN103077856B (en) * | 2011-10-25 | 2015-03-04 | 施耐德电器工业公司 | Asymmetric double-contact breaker |
JP6078378B2 (en) * | 2013-03-01 | 2017-02-08 | 株式会社日立産機システム | Circuit breaker |
FR3016472B1 (en) * | 2014-01-13 | 2016-02-05 | Schneider Electric Ind Sas | ELECTRIC CONTACT DEVICE AND LOW VOLTAGE UNIPOLAR CUT-OFF BLOCK INCORPORATING AN ELECTRICAL CONTACT DEVICE |
DE102014107265B4 (en) * | 2014-05-22 | 2020-01-02 | Eaton Intelligent Power Limited | switchgear |
EP3206219B1 (en) * | 2016-02-10 | 2019-07-03 | ABB S.p.A. | A switching device for lv electric installations |
DE102016217106A1 (en) | 2016-09-08 | 2018-03-08 | Siemens Aktiengesellschaft | Switch lock for an electrical switch and electrical switch with such a switch lock |
EP3772073B1 (en) | 2019-08-02 | 2022-06-08 | ABB S.p.A. | Pole actuation booster mechanism |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2478368A1 (en) * | 1980-03-12 | 1981-09-18 | Merlin Gerin | MANEUVER MECHANISM FOR TETRAPOLAR CIRCUIT BREAKER |
DE3034790A1 (en) * | 1980-09-15 | 1982-03-25 | Siemens AG, 1000 Berlin und 8000 München | CIRCUIT BREAKER |
JPS5914235A (en) * | 1982-07-15 | 1984-01-25 | 富士電機株式会社 | Multipolar type circuit breaker |
FR2535521B1 (en) * | 1982-10-29 | 1985-12-27 | Legrand Sa | NEUTRAL CIRCUIT BREAKER |
FR2648952B1 (en) * | 1989-06-26 | 1991-09-13 | Merlin Gerin | LIMITING CIRCUIT BREAKER HAVING AN ELECTROMAGNETIC EFFECT CONTACT DELAY RETARDER |
-
1991
- 1991-10-29 FR FR9113457A patent/FR2683089B1/en not_active Expired - Fee Related
-
1992
- 1992-10-20 ES ES92420366T patent/ES2112306T3/en not_active Expired - Lifetime
- 1992-10-20 US US07/963,755 patent/US5357066A/en not_active Expired - Lifetime
- 1992-10-20 DE DE69224035T patent/DE69224035T2/en not_active Expired - Fee Related
- 1992-10-20 EP EP92420366A patent/EP0540431B1/en not_active Expired - Lifetime
- 1992-10-28 KR KR1019920019959A patent/KR930008898A/en active IP Right Grant
- 1992-10-28 JP JP29050192A patent/JP3352733B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69224035T2 (en) | 1998-07-02 |
US5357066A (en) | 1994-10-18 |
ES2112306T3 (en) | 1998-04-01 |
KR930008898A (en) | 1993-05-22 |
FR2683089B1 (en) | 1993-12-31 |
EP0540431A1 (en) | 1993-05-05 |
JP3352733B2 (en) | 2002-12-03 |
JPH05217486A (en) | 1993-08-27 |
DE69224035D1 (en) | 1998-02-19 |
FR2683089A1 (en) | 1993-04-30 |
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