ES2687407T3 - Medium voltage line switch contact arrangement - Google Patents
Medium voltage line switch contact arrangement Download PDFInfo
- Publication number
- ES2687407T3 ES2687407T3 ES09159292.3T ES09159292T ES2687407T3 ES 2687407 T3 ES2687407 T3 ES 2687407T3 ES 09159292 T ES09159292 T ES 09159292T ES 2687407 T3 ES2687407 T3 ES 2687407T3
- Authority
- ES
- Spain
- Prior art keywords
- segment
- segments
- contact
- flat body
- medium voltage
- 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.)
- Active
Links
Classifications
-
- 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
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/42—Knife-and-clip contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
Landscapes
- Contacts (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Una disposición (1) de contacto de interruptor de línea de media tensión que comprende un contacto fijo (2) y un conjunto de contacto móvil (3) conectable operativamente a dicho contacto fijo (2), donde el conjunto de contacto móvil (3) comprende una primera (31) y una segunda (32) láminas sustancialmente planas, paralelas entre sí, estando dichas láminas planas (31, 32) montadas de manera pivotante en un soporte y pudiendo conectarse de manera giratoria a dicho contacto fijo (2); en la que el contacto fijo (2) comprende un elemento de contacto que tiene un cuerpo sustancialmente plano (20) que tiene una forma rectangular con una esquina recortada y una primera (21) y una segunda (22) superficies de contacto delimitadas por una base (23) conectada a un soporte (24) de contacto y por un primer (25), un segundo (26), un tercer (27) y un cuarto (28) segmentos, donde dicho primer segmento (25) es sustancialmente perpendicular a dicho tercer segmento (27), en la que dicho segundo segmento (26) está situado frente a dicho conjunto de contacto móvil (3) cuando dichas láminas (31, 32) están en proximidad del cuerpo sustancialmente plano (20), en el que dichos primer (25) y cuarto (28) segmentos son sustancialmente paralelos entre sí y sustancialmente perpendiculares a dicho tercer segmento (27), en el que dicho tercer segmento (27) es sustancialmente paralelo a dicha base (23), en el que dicho segundo segmento (26) conecta dicho primer segmento (25) a dicho tercer segmento (26) y está inclinado hacia dicho cuarto segmento (28), de tal modo que la longitud l del tercer segmento (27) es menor que la anchura L de dicho cuerpo sustancialmente plano (20), medida en correspondencia con el punto de conexión entre dichos primer (25) y segundo (26) segmentos. en el que dicho cuerpo plano tiene esquinas redondeadas entre dichos segundo (26) y tercer (27) segmentos y entre dichos tercer (27) y cuarto (28) segmentos, caracterizada por que dicho cuerpo plano tiene bordes redondeados definidos por dichos primer (25), segundo (26), tercer (27) y cuarto (28) segmentos, en la que la longitud l de dicho tercer segmento (27) está entre 0,75 L y 0,85 L, donde L es la anchura de dicho cuerpo sustancialmente plano (20), en la que la distancia d entre el tercer segmento (27) y el punto de conexión entre el primer (25) y el segundo (26) segmentos está entre 0,30 D y 0,40 D, donde D es la longitud del cuerpo sustancialmente plano (20) medida desde la base (23) hasta el tercer segmento (27).A medium voltage line switch contact arrangement (1) comprising a fixed contact (2) and a mobile contact assembly (3) operatively connectable to said fixed contact (2), where the mobile contact assembly (3) it comprises a first (31) and a second (32) substantially flat sheets, parallel to each other, said flat sheets (31, 32) being pivotally mounted on a support and can be rotatably connected to said fixed contact (2); wherein the fixed contact (2) comprises a contact element having a substantially flat body (20) having a rectangular shape with a cut corner and a first (21) and a second (22) contact surfaces delimited by a base (23) connected to a contact support (24) and by a first (25), a second (26), a third (27) and a fourth (28) segments, wherein said first segment (25) is substantially perpendicular to said third segment (27), wherein said second segment (26) is located in front of said mobile contact assembly (3) when said sheets (31, 32) are in proximity to the substantially flat body (20), in the that said first (25) and fourth (28) segments are substantially parallel to each other and substantially perpendicular to said third segment (27), wherein said third segment (27) is substantially parallel to said base (23), in which said second segment (26) connects said first segment (25) to said third segment (26) and is inclined towards said fourth segment (28), such that the length l of the third segment (27) is smaller than the width L of said substantially flat body (20), measured in correspondence with the point of connection between said first (25) and second (26) segments. wherein said flat body has rounded corners between said second (26) and third (27) segments and between said third (27) and fourth (28) segments, characterized in that said flat body has rounded edges defined by said first (25 ), second (26), third (27) and fourth (28) segments, in which the length l of said third segment (27) is between 0.75 L and 0.85 L, where L is the width of said substantially flat body (20), in which the distance d between the third segment (27) and the connection point between the first (25) and the second (26) segments is between 0.30 D and 0.40 D, where D is the substantially flat body length (20) measured from the base (23) to the third segment (27).
Description
55
1010
15fifteen
20twenty
2525
3030
3535
4040
45Four. Five
50fifty
DESCRIPCIONDESCRIPTION
Disposicion de contacto de interruptor de lmea de media tensionMedium voltage line switch contact arrangement
La presente invencion se refiere a una disposicion de contacto, en particular a una disposicion de contacto de un interruptor de lmea de media tension, que tiene una mayor resistencia a fenomenos de arco. Para los objetivos de la presente solicitud, el termino media tension se refiere a aplicaciones en el intervalo entre 1 y 52 kV.The present invention relates to a contact arrangement, in particular a contact arrangement of a medium voltage line switch, which has a greater resistance to arc phenomena. For the purposes of the present application, the term medium voltage refers to applications in the range between 1 and 52 kV.
Los interruptores de lmea de media tension son bien conocidos en la tecnica y comprenden normalmente, para cada fase, un conjunto de contactos que tiene un contacto fijo y un correspondiente contacto movil. Una camara de arco, dotada de un electrodo de arco, esta presente asimismo para controlar los fenomenos de arco y minimizar los efectos de los arcos que se producen durante operaciones de apertura/cierre del interruptor de lmea. Se han propuesto varias soluciones para minimizar los efectos de los arcos sobre los contactos, estando dirigidas dichas soluciones a mejorar el diseno de los contactos principales y/o de la camara de arco y/o a aumentar la velocidad de las operaciones de apertura/cierre.Medium voltage line switches are well known in the art and normally comprise, for each phase, a set of contacts having a fixed contact and a corresponding mobile contact. An arc chamber, equipped with an arc electrode, is also present to control the arc phenomena and minimize the effects of arcs that occur during opening / closing operations of the line switch. Several solutions have been proposed to minimize the effects of the arcs on the contacts, said solutions being directed to improve the design of the main contacts and / or the arc chamber and / or to increase the speed of the opening / closing operations.
Sin embargo, en el presente estado de la tecnica, el diseno de la disposicion de contacto no es del todo satisfactorio. Desde luego, la erosion de los contactos, normalmente contactos de cobre banados en plata, se sigue produciendo como consecuencia de unos tiempos anteriores al arco relativamente largos y/o de la posicion del punto de la base del arco en correspondencia con los contactos de transporte de corriente. Esto reduce la vida del aparato y puede tener asimismo consecuencias negativas sobre el interruptor de lmea de funcionamiento.However, in the present state of the art, the design of the contact arrangement is not entirely satisfactory. Of course, the erosion of the contacts, usually silver-plated copper contacts, continues to occur as a result of relatively long pre-arc times and / or the position of the arc base point in correspondence with the transport contacts of current. This reduces the life of the device and can also have negative consequences on the operating line switch.
Las solicitudes de patente DE3820489A1 y EP1026710A2 dan a conocer ejemplos conocidos de disposiciones de contacto de interruptor.Patent applications DE3820489A1 and EP1026710A2 disclose known examples of switch contact arrangements.
Por lo tanto, un objetivo de la presente invencion es dar a conocer una disposicion de contacto de interruptor de lmea de media tension en la que se evitan, o por lo menos se reducen los inconvenientes mencionados anteriormente.Therefore, an objective of the present invention is to disclose a medium voltage line switch contact arrangement in which they are avoided, or at least the above-mentioned drawbacks are reduced.
Mas en concreto, un objetivo de la presente invencion es dar a conocer una disposicion de contacto de interruptor de lmea de media tension en la que se reduce la erosion de los contactos.More specifically, an objective of the present invention is to provide a medium voltage line switch contact arrangement in which the erosion of the contacts is reduced.
Como un objetivo adicional, la presente invencion esta dirigida a proporcionar una disposicion de contacto de interruptor de lmea de media tension en la que se reduce el tiempo previo al arco.As a further objective, the present invention is directed to provide a medium voltage line switch contact arrangement in which the time prior to the arc is reduced.
Otro objetivo de la presente invencion es dar a conocer una disposicion de contacto de interruptor de lmea de media tension en la que el arco se forma lejos de los contactos principales, impidiendo o reduciendo de ese modo considerablemente la erosion de los contactos.Another objective of the present invention is to disclose a medium voltage line switch contact arrangement in which the arc is formed away from the main contacts, thereby preventing or thereby significantly reducing the erosion of the contacts.
Otro objetivo mas de la presente invencion es dar a conocer una disposicion de contacto de interruptor de lmea de media tension a costes de fabricacion e instalacion reducidos.A further objective of the present invention is to provide a medium voltage line switch contact arrangement at reduced manufacturing and installation costs.
De este modo, la presente invencion se refiere a una disposicion de contacto de interruptor de lmea de media tension segun la siguiente reivindicacion 1 y las reivindicaciones relacionadas.Thus, the present invention relates to a medium voltage line switch contact arrangement according to the following claim 1 and related claims.
Se ha comprobado que, gracias al diseno particular de la disposicion de contacto, en particular del contacto fijo, se ha reducido considerablemente el tiempo previo al arco. Por consiguiente, se reduce considerablemente asimismo la erosion de los contactos.It has been found that, thanks to the particular design of the contact arrangement, in particular of the fixed contact, the time prior to the arc has been considerably reduced. Consequently, the erosion of the contacts is also considerably reduced.
Para el objetivo de la presente invencion, la anchura L del cuerpo plano se mide a lo largo de la lmea perpendicular trazada desde el punto de conexion entre dichos primer y segundo segmentos hasta el cuarto segmento.For the purpose of the present invention, the width L of the flat body is measured along the perpendicular line drawn from the connection point between said first and second segments to the fourth segment.
Forma parte asimismo de la presente invencion un interruptor de lmea de media tension que comprende una disposicion de contacto tal como se ha descrito anteriormente.A medium voltage line switch comprising a contact arrangement as described above is also part of the present invention.
Otras caractensticas y ventajas de la invencion surgiran de la descripcion de las realizaciones preferidas, pero no exclusivas, de una disposicion de contacto de interruptor de lmea de media tension, segun la invencion, de la que se dan a conocer ejemplos no limitativos en los dibujos adjuntos, en los que:Other features and advantages of the invention will arise from the description of the preferred, but not exclusive, embodiments of a medium voltage line switch contact arrangement, according to the invention, from which non-limiting examples are disclosed in the drawings. Attachments, in which:
la figura 1 es una vista lateral de una primera realizacion de una disposicion de contacto de interruptor de lmea, segun la invencion;Figure 1 is a side view of a first embodiment of a line switch contact arrangement, according to the invention;
la figura 2 es una vista frontal de la disposicion de contacto de interruptor de lmea de la figura 1;Figure 2 is a front view of the lmea switch contact arrangement of Figure 1;
la figura 3 es una vista en perspectiva de una primera realizacion de un contacto fijo utilizado en una disposicion deFigure 3 is a perspective view of a first embodiment of a fixed contact used in an arrangement of
contacto de interruptor de lmea, segun la invencion;line switch contact, according to the invention;
la figura 4 es una vista lateral del contacto fijo de la figura 3;Figure 4 is a side view of the fixed contact of Figure 3;
la figura 5 es una vista frontal del contacto fijo de la figura 3;Figure 5 is a front view of the fixed contact of Figure 3;
55
1010
15fifteen
20twenty
2525
3030
3535
4040
45Four. Five
50fifty
la figura 6 es una vista en perspectiva de una segunda realizacion de una disposicion de contacto de interruptor de lmea, segun la invencion.Figure 6 is a perspective view of a second embodiment of a line switch contact arrangement, according to the invention.
Haciendo referencia a las figuras adjuntas, una disposicion de contacto de interruptor de lmea de media tension segun la invencion, indicada globalmente con el numeral de referencia 1, comprende en general un contacto fijo 2 y un conjunto de contacto movil 3 que puede operativamente ser conectado y desconectado de dicho contacto fijo 2.Referring to the attached figures, a medium voltage line switch contact arrangement according to the invention, indicated globally with reference numeral 1, generally comprises a fixed contact 2 and a mobile contact assembly 3 that can be operatively connected and disconnected from said fixed contact 2.
El conjunto de contacto movil 3 comprende normalmente una primera 31 y una segunda 32 laminas sustancialmente planas, que estan dispuestas en paralelo entre sf y a determinada distancia entre sf Las laminas planas 31, 32 estan montadas de manera pivotante en un soporte (no mostrado) en correspondencia con un punto de pivotamiento 35. Rotando en torno al punto de pivotamiento 35, las laminas planas 31 y 32 se pueden conectar y desconectar del contacto fijo 2.The mobile contact assembly 3 normally comprises a first 31 and a second 32 substantially flat sheets, which are arranged in parallel with each other and at a certain distance between them. The flat sheets 31, 32 are pivotally mounted on a support (not shown) in correspondence with a pivot point 35. Rotating around pivot point 35, flat sheets 31 and 32 can be connected and disconnected from the fixed contact 2.
El contacto fijo 2 comprende un elemento de contacto que tiene un cuerpo sustancialmente plano 20 que tiene una primera 21 y una segunda 22 superficies de contacto que, en la posicion cerrada del interruptor, interactuan con las superficies interiores de las laminas planas 31 y 32 para cerrar el circuito.The fixed contact 2 comprises a contact element having a substantially flat body 20 having a first 21 and a second 22 contact surfaces that, in the closed position of the switch, interact with the inner surfaces of the flat sheets 31 and 32 for close the circuit
El cuerpo sustancialmente plano 20 esta delimitado por una base 23, que esta electrica y mecanicamente conectada a un soporte 24 de contacto, y por un primer 25, un segundo 26, un tercer 27 y un cuarto 28 segmentos, para tener una forma particular.The substantially flat body 20 is delimited by a base 23, which is electrically and mechanically connected to a contact support 24, and by a first 25, a second 26, a third 27 and a fourth 28 segments, to have a particular shape.
En detalle, el cuerpo sustancialmente plano 20 esta posicionado para tener la primera 21 y la segunda 22 superficies de contacto sustancialmente paralelas a las laminas planas 31 y 32 del conjunto de contacto movil 3, con el primer 25 y el segundo 26 segmentos situados frente a dicho conjunto de contacto movil 3.In detail, the substantially flat body 20 is positioned to have the first 21 and the second 22 contact surfaces substantially parallel to the flat sheets 31 and 32 of the mobile contact assembly 3, with the first 25 and the second 26 segments facing each other. said mobile contact assembly 3.
En lo que se refiere a la forma del cuerpo sustancialmente plano 20, el primer segmento 25 es sustancialmente perpendicular a dicho tercer segmento 27, conectando el segundo segmento 26 dicho primer segmento 25 a dicho tercer segmento 27 y estando inclinado hacia dicho cuarto segmento 28, de tal modo que la longitud l del tercer segmento 27 es mas corta que la anchura L de dicho cuerpo sustancialmente plano 20 medida en correspondencia del punto de conexion 29 entre dichos primer 25 y segundo 26 segmentos.As regards the substantially flat body shape 20, the first segment 25 is substantially perpendicular to said third segment 27, the second segment 26 connecting said first segment 25 to said third segment 27 and being inclined towards said fourth segment 28, such that the length l of the third segment 27 is shorter than the width L of said substantially flat body 20 measured in correspondence of the connection point 29 between said first 25 and second 26 segments.
En otras palabras, tal como se muestra en las figuras adjuntas, por lo menos una parte del cuerpo sustancialmente plano 20 del contacto fijo 2, en particular la parte situada frente al conjunto de contacto movil 3, esta recortada.In other words, as shown in the attached figures, at least a substantially flat body part 20 of the fixed contact 2, in particular the part facing the mobile contact assembly 3, is cut out.
Como ya se ha dicho, para el objetivo de la presente invencion, la anchura L del cuerpo plano 20 se considera la distancia entre el punto de conexion 29 y el cuarto segmento 28 medido a lo largo de la lmea trazada desde el punto de conexion 29 perpendicularmente al cuarto segmento 28, tal como se muestra en la figura 4.As already stated, for the purpose of the present invention, the width L of the flat body 20 is considered the distance between the connection point 29 and the fourth segment 28 measured along the line drawn from the connection point 29 perpendicular to the fourth segment 28, as shown in Figure 4.
Gracias a la forma particular del cuerpo plano 20 del contacto fijo y a su posicion con respecto al conjunto de contacto movil 3, en particular con respecto a las laminas de contacto sustancialmente planas 31 y 32, el tiempo previo al arco se reduce, minimizando con ello sensiblemente los fenomenos de erosion en el contacto fijo.Thanks to the particular shape of the flat body 20 of the fixed contact and its position with respect to the mobile contact assembly 3, in particular with respect to the substantially flat contact sheets 31 and 32, the time prior to the arc is reduced, thereby minimizing noticeably the erosion phenomena in the fixed contact.
En la disposicion 1 de contacto de interruptor de lmea de media tension segun la invencion, la longitud l de dicho tercer segmento 27 esta entre 0,75 L y 0,85 L y mas preferentemente esta entre 0,77 L y 0,83 L.In the medium voltage line switch contact arrangement 1 according to the invention, the length l of said third segment 27 is between 0.75 L and 0.85 L and more preferably is between 0.77 L and 0.83 L .
Segun la invencion, la base 23 del cuerpo sustancialmente plano 20 es sustancialmente paralela al tercer segmento 27.According to the invention, the base 23 of the substantially flat body 20 is substantially parallel to the third segment 27.
Se ha encontrado asimismo que los rendimientos de la disposicion 1 de contacto de interruptor de lmea de media tension de la invencion se pueden mejorar adicionalmente dimensionando adecuadamente la longitud y la inclinacion del segundo segmento 26. En particular, segun la invencion, la distancia d entre el tercer segmento 27 y el punto de conexion 29 entre el primer 25 y el segundo 26 segmentos esta preferentemente entre 0,30 D y 0,40 D, donde D es la longitud del cuerpo sustancialmente plano 20 medida desde la base 23 hasta el tercer segmento 27.It has also been found that the performances of the medium voltage line switch contact arrangement 1 of the invention can be further improved by suitably sizing the length and inclination of the second segment 26. In particular, according to the invention, the distance between the third segment 27 and the connection point 29 between the first 25 and the second 26 segments is preferably between 0.30 D and 0.40 D, where D is the length of the substantially flat body 20 measured from the base 23 to the third segment 27.
Mas preferentemente, la distancia d entre dicho tercer segmento 27 y el punto de conexion 29 entre el primer 25 y el segundo 26 segmentos esta entre 0,33 D y 0,38 D.More preferably, the distance d between said third segment 27 and the connection point 29 between the first 25 and the second 26 segments is between 0.33 D and 0.38 D.
Para los objetivos de la presente invencion, y tal como se muestra en las figuras 4 y 5, la distancia d entre dicho tercer segmento 27 y el punto de conexion 29 se considera como la distancia entre dicho punto de conexion 29 y el tercer segmento 27 medido a lo largo de la lmea trazada desde el punto de conexion 29, perpendicularmente al tercer segmento 27.For the purposes of the present invention, and as shown in Figures 4 and 5, the distance d between said third segment 27 and the connection point 29 is considered as the distance between said connection point 29 and the third segment 27 measured along the line drawn from the connection point 29, perpendicular to the third segment 27.
Segun la invencion, dichos primer 25 y cuarto 28 segmentos, mostrados en las figuras adjuntas, son sustancialmente paralelos entre sf y sustancialmente perpendiculares a dicho tercer segmento 27. Por lo tanto, segun la invencion, el cuerpo sustancialmente plano 20 tiene una forma sustancialmente rectangular con una esquina recortada, en concreto la que esta situada frente al conjunto de contacto movil 3. En este caso, la longitud D del cuerpo sustancialmente plano 20 corresponde sustancialmente a la longitud del cuarto segmento 38, mientras que la anchura L del cuerpo plano 20 corresponde sustancialmente a la distancia entre dichos primer 25 y cuarto 28 sustancialmente paralelos, medida a lo largo de su lmea perpendicular.According to the invention, said first 25 and fourth 28 segments, shown in the attached figures, are substantially parallel to each other and substantially perpendicular to said third segment 27. Therefore, according to the invention, the substantially flat body 20 has a substantially rectangular shape with a cut corner, in particular that which is located in front of the mobile contact assembly 3. In this case, the length D of the substantially flat body 20 corresponds substantially to the length of the fourth segment 38, while the width L of the flat body 20 corresponds substantially to the distance between said first 25 and fourth 28 substantially parallel, measured along its perpendicular line.
55
1010
15fifteen
20twenty
2525
3030
3535
4040
45Four. Five
50fifty
De acuerdo con la invencion, las esquinas entre dichos segundo 26 y tercer 27 segmentos y entre dichos tercer 27 y cuarto 28 segmentos son redondeadas. En este caso, la longitud l del tercer segmento 27 se considera como la distancia entre los puntos 81 y 82, es decir, la distancia entre el punto de interseccion 81 de la prolongacion del cuarto 28 y del tercer 27 segmentos y el punto de interseccion 82 de la prolongacion del segundo 26 y del tercer 27 segmentos. La figura 4 muestra como se mide la longitud l en una realizacion particular de la invencion.According to the invention, the corners between said second 26 and third 27 segments and between said third 27 and fourth 28 segments are rounded. In this case, the length l of the third segment 27 is considered as the distance between points 81 and 82, that is, the distance between the intersection point 81 of the extension of room 28 and the third 27 segments and the point of intersection 82 of the extension of the second 26 and the third 27 segments. Figure 4 shows how length 1 is measured in a particular embodiment of the invention.
Segun la invencion, los bordes de dicho cuerpo sustancialmente plano 20 definido por dichos primer 25, segundo 26, tercer 27 y cuarto 28 segmentos son redondeados. En otras palabras, preferentemente dichos bordes no estan constituidos por superficies planas conectadas perpendicularmente a las superficies de contacto 21 y 22, sino que tienen por lo menos un perfil parcialmente curvo.According to the invention, the edges of said substantially flat body 20 defined by said first 25, second 26, third 27 and fourth 28 segments are rounded. In other words, preferably said edges are not constituted by flat surfaces connected perpendicularly to the contact surfaces 21 and 22, but have at least a partially curved profile.
En una realizacion particularmente preferida de la invencion, la longitud l de dicho tercer segmento 27 esta entre 0,77 L y 0,83 L, la distancia d entre dicho tercer segmento 27 y el punto de conexion 29 entre el primer 25 y el segundo 26 segmentos esta entre 0,33 D y 0,38 D, el primer 25 y el cuarto 28 segmentos son sustancialmente paralelos entre sf y sustancialmente perpendiculares a dicho tercer segmento 27, las esquinas entre dichos segundo 26 y tercer 27 segmentos y entre dichos tercer 27 y cuarto 28 segmentos son redondeadas, los bordes de dicho cuerpo sustancialmente plano 20 definido mediante dichos primer 25, segundo 26 y tercer 27 segmentos son asimismo redondeados.In a particularly preferred embodiment of the invention, the length 1 of said third segment 27 is between 0.77 L and 0.83 L, the distance d between said third segment 27 and the connection point 29 between the first 25 and the second 26 segments are between 0.33 D and 0.38 D, the first 25 and the fourth 28 segments are substantially parallel to each other and substantially perpendicular to said third segment 27, the corners between said second 26 and third 27 segments and between said third 27 and fourth 28 segments are rounded, the edges of said substantially flat body 20 defined by said first 25, second 26 and third 27 segments are also rounded.
La disposicion 1 de contacto de interruptor de lmea de media tension de la invencion comprende asimismo normalmente una camara de arco 5. La camara de arco 5 comprende un elemento de soporte 51 que se fija a dicho contacto fijo 2 y se extiende en la direccion del conjunto de contacto movil 3. A tal efecto, puede estar dispuesto un orificio en el cuerpo plano 20 del contacto fijo 2, fijandose el elemento de soporte a dicho orificio mediante el medio de fijacion (no mostrado en las figuras), por ejemplo por un medio de rosca. Es posible asimismo otra disposicion de fijacion.The medium voltage line switch contact arrangement 1 of the invention also normally comprises an arc chamber 5. The arc chamber 5 comprises a support member 51 that is fixed to said fixed contact 2 and extends in the direction of the mobile contact assembly 3. For this purpose, a hole may be arranged in the flat body 20 of the fixed contact 2, the support element being fixed to said hole by means of the fixing means (not shown in the figures), for example by a thread thread Another fixing arrangement is also possible.
La camara de arco 5 comprende ademas una serie de placas 52 que tienen un primer extremo 53 conectado operativamente a dicho elemento de soporte 51 y un segundo extremo 54 que tiene sustancialmente forma de U y define un paso para dichas primera 31 y segunda 32 laminas planas de dicho conjunto de contacto movil 3. Tal como se muestra en la figura 2, el extremo en forma de U se puede obtener utilizando dos brazos sustancialmente paralelos 541 y 542 que sobresalen del cuerpo de las placas 52. Es posible asimismo otra configuracion de la camara de arco 5, que es por sf misma conocida en la tecnica.The arc chamber 5 further comprises a series of plates 52 having a first end 53 operatively connected to said support element 51 and a second end 54 that is substantially U-shaped and defines a passage for said first 31 and second 32 flat sheets of said mobile contact assembly 3. As shown in Figure 2, the U-shaped end can be obtained using two substantially parallel arms 541 and 542 protruding from the body of the plates 52. Another configuration of the arc camera 5, which is itself known in the art.
Segun una realizacion particular, mostrada en la figura 6, la disposicion 1 de contacto de interruptor de lmea de media tension de la invencion comprende un electrodo de arco 55 que esta situado en el elemento de soporte 51 de la camara de arco 5. El electrodo de arco 55 esta posicionado preferentemente en correspondencia con el punto de conexion 29 entre dichos primer 25 y segundo 26 segmentos y sobresale en la direccion de dicho conjunto de contacto movil 3, para estar a corta distancia sobre la primera 31 y la segunda 32 laminas planas del conjunto de contacto movil 3, cuando dichas laminas 31 y 32 estan en la proximidad del cuerpo sustancialmente plano 20 del contacto fijo 2.According to a particular embodiment, shown in Figure 6, the medium voltage line switch contact arrangement 1 of the invention comprises an arc electrode 55 which is located in the support member 51 of the arc chamber 5. The electrode arc 55 is preferably positioned in correspondence with the connection point 29 between said first 25 and second 26 segments and protrudes in the direction of said mobile contact assembly 3, to be a short distance above the first 31 and the second 32 flat sheets of the mobile contact assembly 3, when said sheets 31 and 32 are in close proximity to the substantially flat body 20 of the fixed contact 2.
Se ha observado que la utilizacion del electrodo de arco 55 ayuda a mejorar los rendimientos de la disposicion 1 de contacto de interruptor de lmea de media tension de la invencion. En particular, debido a la presencia de dicho electrodo de arco 55, el inicio del arco no se produce en el contacto fijo 2 sino en el electrodo de arco 55. Por consiguiente, el arco se forma lejos del contacto fijo, de ese modo evitando o por lo menos minimizando los problemas de erosion de los contactos debida al arco.It has been observed that the use of the arc electrode 55 helps improve the performance of the medium voltage line switch contact arrangement 1 of the invention. In particular, due to the presence of said arc electrode 55, the start of the arc does not occur at the fixed contact 2 but at the arc electrode 55. Accordingly, the arc is formed away from the fixed contact, thereby avoiding or at least minimizing the problems of erosion of the contacts due to the arc.
Tal como se puede ver a partir de la descripcion anterior, la disposicion de contacto de interruptor de lmea de media tension de la presente invencion tiene una serie de ventajas con respecto a los interruptores de lmea de media tension equipados con disposiciones de contacto convencionales. Por ejemplo, gracias a la forma y la colocacion particulares del contacto fijo, se reduce considerablemente el tiempo previo al arco, reduciendo con ello asimismo los fenomenos de erosion en el contacto fijo.As can be seen from the above description, the medium voltage line switch contact arrangement of the present invention has a number of advantages over medium voltage line switches equipped with conventional contact arrangements. For example, thanks to the particular shape and placement of the fixed contact, the time prior to the arc is considerably reduced, thereby reducing the erosion phenomena in the fixed contact.
Es posible asimismo que el inicio del arco no este localizado en el contacto fijo principal, sino en un electrodo de arco adicional posicionado adecuadamente, con ello reduciendo adicionalmente los problemas de erosion de los contactos del contacto principal fijo.It is also possible that the start of the arc is not located in the main fixed contact, but in an additional arc electrode properly positioned, thereby further reducing the erosion problems of the fixed main contact contacts.
La disposicion de contacto de interruptor de lmea de media tension concebida de este modo puede experimentar numerosas modificaciones y presentarse en varias variantes, entrando todas en el alcance de las reivindicaciones adjuntas.The medium voltage line switch contact arrangement conceived in this way can undergo numerous modifications and come in several variants, all of which fall within the scope of the appended claims.
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP09159292.3A EP2249359B1 (en) | 2009-05-04 | 2009-05-04 | Medium voltage line switch contact arrangement. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2687407T3 true ES2687407T3 (en) | 2018-10-25 |
Family
ID=41051990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES09159292.3T Active ES2687407T3 (en) | 2009-05-04 | 2009-05-04 | Medium voltage line switch contact arrangement |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2249359B1 (en) |
| CN (2) | CN101882508A (en) |
| ES (1) | ES2687407T3 (en) |
| RU (1) | RU99898U1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2249359B1 (en) * | 2009-05-04 | 2018-08-15 | ABB Schweiz AG | Medium voltage line switch contact arrangement. |
| WO2013152555A1 (en) * | 2012-04-10 | 2013-10-17 | Abb Technology Ltd. | Arc-quenching device of switch for low, medium and high voltage applications |
| DE102012215479B4 (en) * | 2012-08-31 | 2014-08-21 | Siemens Aktiengesellschaft | Method for closing a switch and switch for carrying out the method |
| EP3745441B1 (en) * | 2019-05-29 | 2023-07-05 | ABB S.p.A. | Low voltage contact assembly |
| WO2024126902A1 (en) * | 2022-12-13 | 2024-06-20 | Hager-Electro Sas | Device for extinguishing an electric arc and associated modular-format electrical protection apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3820489A1 (en) * | 1988-06-16 | 1989-12-21 | Felten & Guilleaume Energie | Encapsulated switch disconnector arrangement |
| DE19904930C2 (en) * | 1999-02-06 | 2000-12-14 | Felten & Guilleaume Ag | Switches for use in SF6 medium-voltage switchgear |
| EP2249359B1 (en) * | 2009-05-04 | 2018-08-15 | ABB Schweiz AG | Medium voltage line switch contact arrangement. |
-
2009
- 2009-05-04 EP EP09159292.3A patent/EP2249359B1/en active Active
- 2009-05-04 ES ES09159292.3T patent/ES2687407T3/en active Active
- 2009-10-15 CN CN2009102063466A patent/CN101882508A/en active Pending
- 2009-10-15 CN CN2009201787540U patent/CN201608057U/en not_active Expired - Lifetime
-
2010
- 2010-04-30 RU RU2010117358/07U patent/RU99898U1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| EP2249359B1 (en) | 2018-08-15 |
| CN201608057U (en) | 2010-10-13 |
| RU99898U1 (en) | 2010-11-27 |
| CN101882508A (en) | 2010-11-10 |
| EP2249359A1 (en) | 2010-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2687407T3 (en) | Medium voltage line switch contact arrangement | |
| ES2558789T3 (en) | Switching system | |
| ES2671774T3 (en) | Circuit breaker with a rotating disk and an electronic assembly to improve its operational reliability | |
| ES2636797T3 (en) | Switch with permanent magnet arc extinction | |
| ES2579939T3 (en) | Molded Case Circuit Breaker | |
| ES2215790T3 (en) | ARC CAMERA FOR LOW VOLTAGE SWITCHES. | |
| US20050117269A1 (en) | Ion generating unit | |
| US20220346291A1 (en) | Display substrate and display device | |
| ES2618852T3 (en) | Vacuum switch | |
| DE50001290D1 (en) | SWITCHING CONTACT ARRANGEMENT OF A LOW VOLTAGE CIRCUIT BREAKER WITH MAIN CONTACTS, INTERMEDIATE CONTACTS AND Tear-off Contacts | |
| WO2007135201A1 (en) | Housing for single-pole circuit breaker | |
| ES2239705T3 (en) | PERFECTION IN A LAMINAR STRUCTURE FOR A CIRCUIT BREAKER. | |
| ES2563186T3 (en) | Mobile contact arm for molded housing circuit breaker and mobile contact arm assembly | |
| ES2642578T3 (en) | Vacuum switch | |
| ES2660870T3 (en) | Power transmission mechanism for four-pole circuit breaker | |
| ES2407116T3 (en) | Low voltage device with rotating element with high electrodynamic resistance | |
| ES2267240T3 (en) | ELECTRIC CUTTING APARTMENT WITH A CONTACT ORGAN PROVIDED WITH A CLEARANCE. | |
| JP6293075B2 (en) | Breaker | |
| US11600461B2 (en) | Switch device with contact cover | |
| ES2906808T3 (en) | Switchgear with arc extinguishing equipment and arc guide | |
| JP2993346B2 (en) | Arc extinguishing device | |
| ES2748840T3 (en) | Vacuum switch | |
| US20060044091A1 (en) | Low voltage circuit breaker | |
| BRPI1001586A2 (en) | contact arrangement for a medium voltage line switch | |
| US20070095794A1 (en) | Arc plate with runner, and arc chute and electrical switching apparatus incorporating same |