EP3469612B1 - Contact arm for a pantograph disconnector and use of said contact arm - Google Patents
Contact arm for a pantograph disconnector and use of said contact arm Download PDFInfo
- Publication number
- EP3469612B1 EP3469612B1 EP17739932.6A EP17739932A EP3469612B1 EP 3469612 B1 EP3469612 B1 EP 3469612B1 EP 17739932 A EP17739932 A EP 17739932A EP 3469612 B1 EP3469612 B1 EP 3469612B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- contact element
- contact arm
- arm
- disconnector
- 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.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
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- 241000530268 Lycaena heteronea Species 0.000 description 2
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/34—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact adapted to engage an overhead transmission line, e.g. for branching
- H01H31/36—Contact moved by pantograph
Definitions
- the invention relates to a contact arm for single-column disconnector and its use, with at least one profile body and with at least one contact element.
- the at least one profile body is rod-shaped and the at least one contact element is rod-shaped.
- a contact arm which forms two solid profile bodies in the contact area, between which a contact element is arranged.
- Single column disconnectors are for the visible disconnection of a current path in the high voltage range, i. H. especially in the range of up to 1200 kV voltage.
- a typical structure of a single column disconnector comprises at least one contact with a movable and a fixed contact piece.
- the fixed contact piece i.e. H. the fixed contact is z. B. a spatially fixed cylindrical metal tube.
- the contact piece is made of a material such as. B. copper, which conducts electrical current well, and / or aluminum.
- the movable contact piece is e.g. B. in the form of a contact arm.
- the contact arm is pivoted to connect or disconnect the current path toward the fixed contact or away from the fixed contact. In the connected or switched-on state, good electrical contact between the fixed contact and the movable contact arm is necessary in order to conduct electrical current over the contact without loss or at least with little loss.
- the contact arm is made of a metal tube with a circular cross section, there is only a small contact or contact surface between the metal tube of the contact arm and the metal tube of the fixed contact.
- the contact arm consists of a metal rod with a rectangular cross section, the contact area is enlarged. This leads to better electrical contact when the disconnector is closed, ie to less electrical losses, and to a reduction in the risk of unintentional interruption of the current path.
- the device is not encapsulated and is not built into a housing so that the separation distance of the single-column disconnector is clearly visible from the outside.
- the elements or parts of the single column disconnector are therefore exposed to the weather. Wind and / or ice loads can lead to a movement of the movable contact piece, in particular a movement away from the fixed contact, which worsens the electrical contact and thus leads to higher electrical losses across the contact.
- the current path can be disconnected, unintentionally and with negative consequences for the connected power grid.
- high currents can cause forces, e.g. B. about changing magnetic fields around the current-carrying parts, d. H.
- the object of the present invention is to avoid or reduce the problems described above.
- it is an object to specify a contact arm for single-column disconnectors and a method for using them, which enable reliable operation, in particular with low electrical losses in the connected state of the single-column disconnector.
- a contact arm for single-column disconnector with the features according to Claim 1 and / or solved by a method for using a contact arm in a single column disconnector, in particular the previously described contact arm, according to claim 11.
- Advantageous embodiments of the contact arm according to the invention for single-column disconnectors and / or the method for using a contact arm in a single-column disconnector are specified in the subclaims. Objects of the main claims can be combined with one another and with features of subclaims and features of the subclaims.
- a contact arm according to the invention for single-column disconnector comprises at least one profile body and at least one contact element, the at least one profile body being rod-shaped and the at least one contact element being rod-shaped.
- the contact element has a T-profile.
- the contact element with T-profile results in good electrical contact in the closed state of the single-column disconnector, with low electrical losses and low costs arising therefrom, in particular even in the case of unfavorable weather conditions such as e.g. B. in wind and ice formation and / or in the event of short circuits in the network.
- the larger contact area of a T-profile compared to a tubular, d. H. O-profile with a smaller cross-section or other surface shape a reliable current flow with low electrical losses is possible when the single-column disconnector is closed.
- a round rod as a fixed contact which bears against a T-profile of a movable contact, can have an elongated contact surface, in contrast to a point-shaped contact surface when using two round, rod-shaped contact pieces. Improved contact can also be achieved by changing radii or surface profiles compared to the O-profile of a round rod of the fixed contact.
- a higher reliability of the contact when moving a contact piece along the longitudinal axis of the contact piece is given by the larger contact surface, since the contact may only be interrupted locally along the longitudinal axis and not completely.
- a larger contact area also results in a better current flow, with less electrical losses.
- the at least one contact element can have a T-profile along its entire length, in particular exactly one T-profile, and can be designed in the form of an elongated, straight busbar with at least one electrical contact surface.
- a contact element with the same profile over the entire length, in the form of a T-shaped busbar provides good electrical contact in the closed state of the single-column disconnector, regardless of the exact position of the movable contact piece relative to the fixed contact on the surface of the T-profile. If the movable contact piece freezes, which can change its shape as a result, z. B. the contact arm can easily bend due to the weight of the ice, good contact with the fixed contact is possible, since the contact is independent of the exact position of the fixed contact on the surface of the T-profile of the contact arm.
- the surface is the same along the length of the T-shaped busbar and gives the same contact everywhere, regardless of the location on the surface.
- the at least one contact element can be rounded on its upper side with a radius r.
- the entire upper side of the at least one contact element can be rounded, the upper side forming an electrical contact surface.
- the contact pieces can contact one another in the event of a short circuit and / or when moved by wind or ice unroll without changing the effective contact surface or losing contact. As a result, good electrical contact is maintained at all times when the single-column disconnector is closed and electrical losses or uncontrolled opening of the contact are avoided.
- the at least one contact element can be constructed from a vertical and a horizontal web, the transition of the two webs being at right angles.
- the at least one contact element can be constructed from a vertical and a horizontal web, the transition of the two webs being rounded on each side, in particular with a radius which extends on each side over the entire length of the horizontal web and / or with a radius that extends on each side over the entire length of the vertical web.
- the shape can be dependent on the shape of the profile body, the contact element being adapted in or on the profile body.
- good contact can be achieved between the contact element and the profile body with a contact element which has a right-angled transition between the two webs and can be inserted into the groove.
- good contact can be achieved between the contact element and the profile body with a contact element which has a rounded transition between the two webs and can be inserted into the groove in a form-fitting manner.
- good electrical contact between the profile body and the contact element can be achieved in this way.
- the at least one profile body is essentially rectangular, in particular with rounded corners and edges.
- the profile body is hollow, and has on one side a continuous groove in which the contact element is embedded.
- the groove is also to be understood as a gap or continuous slot.
- the at least one profile body can alternatively consist of two rod-shaped hollow bodies which are spaced parallel to one another and essentially each have an oval shape with two parallel, flat sides, in particular with two sides connected via a connecting web.
- the contact element is embedded between the two rod-shaped bodies, in particular in a form-fitting manner.
- the contact element fitted in this way in the profile body can be fixed in a mechanically fixed manner to the profile body, as a result of which a mechanically stable contact arm with good electrical conduction properties is produced over the entire contact arm.
- the at least one profile body and the at least one contact element can be connected to one another by means of screws and / or bolts, in particular arranged on at least one lateral vertical surface which is arranged below the upper side of the contact element, the upper side of the contact element forming an electrical contact surface which is formed is for making an electrical contact with a fixed contact of the single column disconnector.
- Screws and bolts are suitable for establishing a long-term stable and good electrical connection.
- the at least one contact element can be formed from copper. Copper has good electrical properties and can be processed mechanically stable.
- the at least one profile body can be made of copper or aluminum. Copper and aluminum have good electrical properties as metals, whereby aluminum has better mechanical stability and copper enables better, low-loss power conduction. Both metals are suitable to form a mechanically stable profile body and to enable good electrical power conduction across the entire profile body.
- the contact element is also mechanically stabilized by the mechanically stable profile body.
- a method according to the invention for using a contact arm according to one of claims 1 to 10 in a one-column disconnector comprises that when the current path of the single-column disconnector is switched on, a T-shaped contact element of the movable contact arm, fastened to a profile body of the contact arm, is in electrical and mechanical contact with a fixed contact, in particular with a fixed contact in the form of a round rod.
- the contact arm on the fixed contact moves, in particular in the event of a short circuit or in the event of wind or ice, the contact arm can roll off the fixed contact, the contact surface between the fixed contact and the T-shaped contact element, in particular the surface on the top of the horizontal web of the T-shaped Contact element, through the rounding of which receives an electrical contact continuously, with a constant effective contact area between the contact arm and the fixed contact.
- FIGS Figures 1 to 7 shown and described in more detail below.
- FIG. 1 a single-column disconnector 1 with a fixed contact 19 and four contact arms 2 according to the invention is shown schematically in an oblique view.
- the single-column disconnector 1 shown is designed in the manner of a pantograph or gripper disconnector.
- the one-column disconnector 1 is connected to a phase of the power network and can, for. B. a high-voltage circuit breaker.
- a power grid usually has 3 phases, each phase being switched with the help of a high-voltage circuit breaker.
- the high-voltage circuit breaker which is not shown in the figures for the sake of simplicity, switches the current flow or the high voltage on or off, as required, in a controlled manner.
- H. the current path is connected or disconnected.
- the contact for switching is encapsulated in a high-voltage circuit breaker, so that its switching status is not visible from the outside.
- the current path is additionally, externally visible, separated by a disconnector.
- the current path is visible from the outside and is connected by a disconnector.
- a disconnector is designed to make the switching status visible after switching off or before switching on and to ensure that a power line is de-energized.
- the single column disconnector 1, as in Figure 1 is shown as an embodiment as a pantograph isolator, has a spatially fixed contact 19, which is electrically connected to a phase or line of the power network or a high-voltage circuit breaker.
- the phase current path is connected or disconnected by movement at least one movable contact arm 2 towards or away from the fixed contact 19.
- the current path is closed or electrically conductively connected across the single-column disconnector 1.
- the at least one movable contact arm 2 moves away from the fixed contact 19, the current path is disconnected beyond the single-column disconnector 1, ie a possible current flow is prevented.
- a single-column disconnector 1 is designed in the manner of a pantograph disconnector with four contact arms 2, in the form of two pairs of contact arms 3, 4.
- the four contact arms 2 move towards the fixed contact 19 or away from the fixed contact 19 until a good contact between the contact arms 2 with the fixed contact 19 is achieved or the electrical contact is safely separated.
- the movement is e.g. B. driven by a motor, which is not shown in the figures for the sake of simplicity, and can be transmitted via a transmission. Shielding z. B. in the form of round sheets, ends of the contact arms 2 can shield electrically to prevent corona effects and electrical flashovers in these areas.
- FIG 2 is a contact arm 2, as in the one-column disconnector 1 Figure 1 fourfold, used in two parallel pairs of contact arms 3, 4, shown in cross-section.
- the contact arm 2 according to the invention which in the embodiment of the Figure 2 is formed with a rectangular cross section, has a profile body 5 and a spatially and electrically conductively connected contact element 6.
- the profile body 5, 13 is hollow, rod-shaped with a rectangular cross section perpendicular to the longitudinal axis of the rod.
- the edges of the profile body 5 are rounded in order to prevent discharges at corners and edges.
- the top of the profile body 5 a groove or continuous recess is arranged.
- the groove is linear, along the longitudinal axis of the profile body 5, and connects the inside with the outside of the profile body 5.
- a contact element 6 is arranged in the groove or is inserted in a form-fitting manner.
- the contact element 6 is rod-shaped, i. H. elongated, especially without being hollow on the inside.
- the contact element 6 has a T-shape in cross section and is designed analogously to a rail. Holes are arranged laterally through the contact element 6, on a vertical surface 18, to which holes in a lateral surface of the profile body 5, 13 are assigned. Screws 10 and / or bolts, guided through the holes, can fasten the contact element 6 to the profile body 5 in a mechanically stable and / or electrically conductive manner.
- FIG 3 is a section of the contact arm 2, which in Figure 2 shown in profile, ie cross-section perpendicular to the longitudinal axis, in an oblique view.
- the groove, ie the slot in the profile body 5, in which the T-shaped contact element 6 is fitted, is shown for better illustration in the rear area without and in the front area with the arranged contact element 6.
- Are exemplary three screws 10 for fastening the contact element 6 to the profile body 5 are shown.
- the profile body 5 can, for. B. consist of copper or aluminum.
- the contact element 6 can consist of copper for good electrical conductivity and good electrical contact and is held mechanically stable via the profile body 5.
- the structure shown describes a contact arm 2 with high mechanical stability and good electrical contact properties in contact with the fixed contact 19.
- FIG 4 is an alternative to the structure of the Figures 2 and 3 a contact arm 2 is shown which, instead of a profile body 5 with a rectangular cross section, has two profile bodies 5 with an oval cross section arranged parallel to one another.
- the oval cross-section is composed of two flat, parallel sides 15, 16, which are mechanically connected to one another in the center via a connecting web 17, which is perpendicular to the sides 15, 16 and extends along the length of the profile body 5, and two semicircles Radius r, which each connect the opposite ends of the planes 15, 16 parallel to the connecting web 17.
- FIG 5 is a cutout or section or area of the contact arm 2 Figure 4 shown in an oblique view.
- the two profile bodies 5 are spaced apart, arranged parallel to one another, as a result of which a gap is formed between the profile bodies 5.
- a T-shaped contact piece 6 analogous to the contact piece 6 in the groove in the Figures 2 and 3 , arranged.
- Screws 10 or bolts can be used to connect the profile bodies 5 to one another and to the contact piece 6 in a mechanically stable manner.
- the screws 10 with nuts can, as in Fig. 4 is shown, hold and / or press the contact arm together via the outer sides 15, 16 of the contact arm 2 or the two profile bodies 5.
- the screws 10 can act with nuts on inner surfaces 18 of the profile body 5, around the contact arm or to hold and / or press the profile body 5 and the contact piece 6 together.
- the contact piece 6, as in the Figures 6 and 7 is shown in a sectional view perpendicular to the longitudinal axis of the contact piece 6, has two webs 8 and 9.
- the T-shape is formed by a vertical, lower web 8 or bar and a horizontal web 9 or bar on the underlying vertical web 8. With the underside of the horizontal web 9, the contact piece 6 rests on the profile body 5.
- the vertical web 8 is between, see the Figures 4 and 5 , the profile bodies 5 or in, see the Figures 2 and 3 , Profile body 5 arranged.
- the contact element 6 On the upper side 7, ie the upward-facing surface of the contact element 6 and thus of the contact arm 2, the contact element 6 has a curvature, ie the web 9 is bent upwards on its upper side or is round with a radius r.
- the curvature extends along the cross section of the contact element 6 from one side to the other, along the entire width of the horizontal web 9 in FIG Figures 6 and 7 ,
- a fixed contact 19 can roll on the curved upper surface of the contact element 6 when the contact arm 2 moves relative to the fixed contact 19.
- a movement arises e.g. B. by environmental influences such as wind or ice on the contact arm 2 or in the event of short-circuit currents, by forces from magnetic fields through which current flows.
- the electrical contact in the closed state of the single column disconnector 1 remains the same in time, despite environmental influences such as. B. wind and ice and / or short-circuit currents.
- the exemplary embodiments described above can be combined with one another and / or can be combined with the prior art. So the contact arms z. B. be used in different types of single column disconnectors 1. Pantographs, disconnectors with one, two or more contact arms 2 can be used. Instead of single-column disconnectors 1, it is also possible to use disconnectors with several, in particular movable, columns. The dividers can be used for one or more phases in the power grid.
- the profile body 5 can have different shapes. So a profile body 5 z. B. rectangular, with rounded edges, as in 2 and 3 is shown, be formed with one or more slots, or a profile body 5 can, for. B. oval, as in 4 and 5 is shown to be formed with one or more slots. An oval profile body 5 can have an elliptical cross section. One or each contact element 6 can be arranged in or in the slots. Two or more profile bodies 5 can also be arranged, in particular parallel to one another, as in FIG 4 and 5 is shown, and the contact element 6 or the contact elements 6 can be arranged between or in each case between the profile bodies 5. Profile body 5 cross sections such. B. rectangular, oval and / or elliptical oval.
- All profile bodies 5 can each be designed with the same cross section or with different cross sections, in particular with a different shape. Combinations of the exemplary embodiments of FIGS Figures 2, 3 and 4, 5 are used, arranged with contact elements 6 between profile bodies 5 and in slots of the respective profile body 5.
- the contact elements 6 and profile body 5 can instead of by screws 10 or bolts z. B. connected by welding or gluing.
- Contact elements 6 and / or profile body 5 can be coated for better electrical conductivity, for. B. silvered.
- contact surfaces between parts or elements of the contact arms 1 can be coated.
- Profile body 5 and / or contact elements 7 can be made of a material, in particular a highly conductive material such as. B. copper, steel or aluminum, and / or may include different materials and / or alloys.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Contacts (AREA)
- Gas-Insulated Switchgears (AREA)
Description
Die Erfindung betrifft einen Kontaktarm für Einsäulentrennschalter und dessen Verwendung, mit wenigstens einem Profilkörper und mit wenigstens einem Kontaktelement. Der wenigstens eine Profilkörper ist stangenförmig ausgebildet und das wenigstens eine Kontaktelement ist stabförmig ausgebildet.The invention relates to a contact arm for single-column disconnector and its use, with at least one profile body and with at least one contact element. The at least one profile body is rod-shaped and the at least one contact element is rod-shaped.
Aus dem Dokument
Einsäulentrennschalter sind zum sichtbaren Trennen einer Strombahn im Hochspannungsbereich, d. h. insbesondere im Bereich von bis zu 1200 kV Spannung. Ein typischer Aufbau eines Einsäulentrennschalters umfasst wenigstens einen Kontakt mit einem beweglichen und einem festen Kontaktstück. Das feste Kontaktstück, d. h. der Festkontakt ist z. B. ein räumlich fixiertes zylinderförmiges Metallrohr. Das Kontaktstück ist aus einem Material wie z. B. Kupfer, welches elektrischen Strom gut leitet, und/oder Aluminium.Single column disconnectors are for the visible disconnection of a current path in the high voltage range, i. H. especially in the range of up to 1200 kV voltage. A typical structure of a single column disconnector comprises at least one contact with a movable and a fixed contact piece. The fixed contact piece, i.e. H. the fixed contact is z. B. a spatially fixed cylindrical metal tube. The contact piece is made of a material such as. B. copper, which conducts electrical current well, and / or aluminum.
Das bewegliche Kontaktstück ist z. B. in Form eines Kontaktarms ausgebildet. Der Kontaktarm wird zum Verbinden oder Trennen der Strombahn zum Festkontakt hin oder vom Festkontakt weg geschwenkt. Im verbundenen bzw. eingeschalteten Zustand ist ein guter elektrischer Kontakt zwischen dem Festkontakt und dem beweglichen Kontaktarm notwendig, um Verlustfrei bzw. zumindest Verlustarm elektrischen Strom über den Kontakt zu leiten. Ist der Kontaktarm aus einem Metallrohr mit kreisrundem Querschnitt, so besteht zwischen dem Metallrohr des Kontaktarms und dem Metallrohr des Festkontakts nur eine geringe Auflage- bzw. Kontaktfläche. Besteht der Kontaktarm aus einer Metallstange mit rechteckigem Querschnitt, so ist die Kontaktfläche vergrößert. Dies führt zu einem besseren elektrischen Kontakt im geschlossenen Zustand des Trenners, d. h. zu weniger elektrischen Verlusten, und zu einer Verringerung des Risikos der unbeabsichtigten Unterbrechung der Strombahn.The movable contact piece is e.g. B. in the form of a contact arm. The contact arm is pivoted to connect or disconnect the current path toward the fixed contact or away from the fixed contact. In the connected or switched-on state, good electrical contact between the fixed contact and the movable contact arm is necessary in order to conduct electrical current over the contact without loss or at least with little loss. If the contact arm is made of a metal tube with a circular cross section, there is only a small contact or contact surface between the metal tube of the contact arm and the metal tube of the fixed contact. If the contact arm consists of a metal rod with a rectangular cross section, the contact area is enlarged. This leads to better electrical contact when the disconnector is closed, ie to less electrical losses, and to a reduction in the risk of unintentional interruption of the current path.
Damit die Trennstrecke des Einsäulentrennschalters nach außen hin gut sichtbar ist, ist die Vorrichtung nicht gekapselt und nicht in einem Gehäuse verbaut. Somit sind die Elemente bzw. Teile des Einsäulentrennschalters den Wettereinflüssen ausgesetzt. Wind und/oder Eisbelastung können zu einer Bewegung des beweglichen Kontaktstücks führen, insbesondere zu einer Bewegung vom Festkontakt weg, was den elektrischen Kontakt verschlechtert und somit zu höheren elektrischen Verlusten über den Kontakt hinweg führt. Im Extremfall kann ein Auftrennen der Strombahn erfolgen, unbeabsichtigt und mit negativen Folgen für das angeschlossene Stromnetz. In einem Kurzschlussfall können durch hohe Ströme Kräfte entstehen, z. B. über sich ändernde Magnetfelder um die stromdurchflossenen Teile herum, d. h. durch Induktion erzeugte Kräfte, welche zu einer Bewegung des beweglichen Kontaktarms vom Festkontakt weg führen können. Analog Wettereinflüssen kann dies den elektrischen Kontakt verschlechtern und somit zu höheren elektrischen Verlusten über den Kontakt hinweg führen. Im Extremfall kann ein unbeabsichtigtes Auftrennen der Strombahn erfolgen.The device is not encapsulated and is not built into a housing so that the separation distance of the single-column disconnector is clearly visible from the outside. The elements or parts of the single column disconnector are therefore exposed to the weather. Wind and / or ice loads can lead to a movement of the movable contact piece, in particular a movement away from the fixed contact, which worsens the electrical contact and thus leads to higher electrical losses across the contact. In extreme cases, the current path can be disconnected, unintentionally and with negative consequences for the connected power grid. In the event of a short circuit, high currents can cause forces, e.g. B. about changing magnetic fields around the current-carrying parts, d. H. forces generated by induction, which can lead to a movement of the movable contact arm away from the fixed contact. Analogous to weather influences, this can worsen the electrical contact and thus lead to higher electrical losses across the contact. In extreme cases, the current path can be cut unintentionally.
Dadurch ist die Zuverlässigkeit des Einsäulentrennschalters eingeschränkt, und hohe elektrische Verluste können zu hohen Kosten führen. Ein sicheres, gesteuertes Trennen und Verbinden kann eingeschränkt oder unmöglich sein.This limits the reliability of the single column disconnector and high electrical losses can lead to high costs. Safe, controlled disconnection and connection can be restricted or impossible.
Aufgabe der vorliegenden Erfindung ist die Vermeidung bzw. Reduzierung der zuvor beschriebenen Probleme. Insbesondere ist es Aufgabe einen Kontaktarm für Einsäulentrennschalter und ein Verfahren zu dessen Verwendung anzugeben, welche eine zuverlässige Funktion, insbesondere mit geringen elektrischen Verlusten im verbundenen Zustand des Einsäulentrennschalters ermöglichen.The object of the present invention is to avoid or reduce the problems described above. In particular, it is an object to specify a contact arm for single-column disconnectors and a method for using them, which enable reliable operation, in particular with low electrical losses in the connected state of the single-column disconnector.
Die angegebene Aufgabe wird erfindungsgemäß durch einen Kontaktarm für Einsäulentrennschalter mit den Merkmalen gemäß Patentanspruch 1 und/oder durch ein Verfahren zur Verwendung eines Kontaktarms in einem Einsäulentrennschalter, insbesondere des zuvor beschriebenen Kontaktarms, gemäß Patentanspruch 11 gelöst. Vorteilhafte Ausgestaltungen des erfindungsgemäßen Kontaktarms für Einsäulentrennschalter und/oder des Verfahrens zur Verwendung eines Kontaktarms in einem Einsäulentrennschalter sind in den Unteransprüchen angegeben. Dabei sind Gegenstände der Hauptansprüche untereinander und mit Merkmalen von Unteransprüchen sowie Merkmale der Unteransprüche untereinander kombinierbar.The stated object is achieved according to the invention by a contact arm for single-column disconnector with the features according to Claim 1 and / or solved by a method for using a contact arm in a single column disconnector, in particular the previously described contact arm, according to
Ein erfindungsgemäßer Kontaktarm für Einsäulentrennschalter umfasst wenigstens einen Profilkörper und wenigstens ein Kontaktelement, wobei der wenigstens eine Profilkörper stangenförmig ausgebildet ist und wobei das wenigstens eine Kontaktelement stabförmig ausgebildet ist. Das Kontaktelement weist ein T-Profil auf.A contact arm according to the invention for single-column disconnector comprises at least one profile body and at least one contact element, the at least one profile body being rod-shaped and the at least one contact element being rod-shaped. The contact element has a T-profile.
Das Kontaktelement mit T-Profil ergibt einen guten elektrischen Kontakt im geschlossenen Zustand des Einsäulentrennschalters, mit geringen elektrischen Verlusten und geringen daraus entstehenden Kosten, insbesondere auch bei ungünstigen Wettereinflüssen wie z. B. bei Wind und Eisbildung und/oder bei Kurzschlüssen im Netz. Durch die größere Kontaktfläche eines T-Profils gegenüber einem rohrförmigen, d. h. O-Profil mit geringerem Querschnitt oder anderer Oberflächenform, ist im geschlossenen Zustand des Einsäulentrennschalters ein zuverlässiger Stromfluss mit geringen elektrischen Verlusten möglich.The contact element with T-profile results in good electrical contact in the closed state of the single-column disconnector, with low electrical losses and low costs arising therefrom, in particular even in the case of unfavorable weather conditions such as e.g. B. in wind and ice formation and / or in the event of short circuits in the network. The larger contact area of a T-profile compared to a tubular, d. H. O-profile with a smaller cross-section or other surface shape, a reliable current flow with low electrical losses is possible when the single-column disconnector is closed.
Ein runder Stab als Festkontakt, welcher an einem T-Profil eines beweglichen Kontakts anliegt, kann eine längliche Kontaktfläche aufweisen, im Gegensatz zu einer punktförmigen Kontaktfläche bei Verwendung von zwei runden, stabförmigen Kontaktstücken. Auch durch veränderte Radien oder Oberflächenprofile gegenüber dem O-Profil eines runden Stabes des Festkontakts kann ein verbesserter Kontakt erreicht werden.A round rod as a fixed contact, which bears against a T-profile of a movable contact, can have an elongated contact surface, in contrast to a point-shaped contact surface when using two round, rod-shaped contact pieces. Improved contact can also be achieved by changing radii or surface profiles compared to the O-profile of a round rod of the fixed contact.
Eine höhere Zuverlässigkeit des Kontakts bei Bewegung eines Kontaktstücks entlang der Längsachse des Kontaktstücks ist durch die größere Auflagefläche gegeben, da der Kontakt unter Umständen nur lokal entlang der Längsachse und nicht vollständig unterbrochen wird. Eine größere Auflagefläche ergibt ebenfalls einen besseren Stromfluss, mit geringeren elektrischen Verlusten.A higher reliability of the contact when moving a contact piece along the longitudinal axis of the contact piece is given by the larger contact surface, since the contact may only be interrupted locally along the longitudinal axis and not completely. A larger contact area also results in a better current flow, with less electrical losses.
Das wenigstens eine Kontaktelement kann entlang seiner gesamten Länge ein T-Profil aufweisen, insbesondere genau ein T-Profil, und in Form einer länglichen, geraden Stromschiene mit wenigstens einer elektrischen Kontaktfläche ausgebildet sein.The at least one contact element can have a T-profile along its entire length, in particular exactly one T-profile, and can be designed in the form of an elongated, straight busbar with at least one electrical contact surface.
Ein Kontaktelement mit einem gleichen Profil über die gesamte Länge, in Form einer T-förmigen Stromschiene ergibt einen guten elektrischen Kontakt im geschlossenen Zustand des Einsäulentrennschalters unabhängig von der genauen Lage des beweglichen Kontaktstücks relativ zum Festkontakt auf der Oberfläche des T-Profils. Bei Vereisung des beweglichen Kontaktstücks, welches sich dadurch in seiner Form verändern kann, wobei z. B. sich der Kontaktarm durch das Gewicht des Eises leicht verbiegen kann, ist ein guter Kontakt mit dem Festkontakt möglich, da der Kontakt unabhängig ist von der genauen Lage des Festkontakts auf der Oberfläche des T-Profils des Kontaktarms. Die Oberfläche ist entlang der Länge der T-förmigen Stromschiene gleich und ergibt überall den gleichen Kontakt, unabhängig vom Ort auf der Oberfläche.A contact element with the same profile over the entire length, in the form of a T-shaped busbar, provides good electrical contact in the closed state of the single-column disconnector, regardless of the exact position of the movable contact piece relative to the fixed contact on the surface of the T-profile. If the movable contact piece freezes, which can change its shape as a result, z. B. the contact arm can easily bend due to the weight of the ice, good contact with the fixed contact is possible, since the contact is independent of the exact position of the fixed contact on the surface of the T-profile of the contact arm. The surface is the same along the length of the T-shaped busbar and gives the same contact everywhere, regardless of the location on the surface.
Das wenigstens eine Kontaktelement kann an seiner Oberseite abgerundet mit einem Radius r ausgebildet sein. Die gesamten Oberseite des wenigstens einen Kontaktelements kann abgerundet sein, wobei die Oberseite eine elektrischen Kontaktfläche bildet. Bei einer abgerundeten Oberfläche, wobei bei einer T-Form die nach oben weisende Fläche die Oberfläche auf der Oberseite ist, können die Kontaktstücke im Kurzschlussfall und/oder bei Bewegung durch Wind oder Eisbelastung aufeinander abrollen, ohne die wirksame Kontaktfläche zu verändern oder den Kontakt zu verlieren. Dadurch wird im geschlossenen Zustand des Einsäulentrennschalters ein guter elektrischer Kontakt zu jedem Zeitpunkt erhalten und elektrische Verluste oder ein unkontrolliertes Öffnen des Kontakts vermieden.The at least one contact element can be rounded on its upper side with a radius r. The entire upper side of the at least one contact element can be rounded, the upper side forming an electrical contact surface. In the case of a rounded surface, the surface facing upward being the surface on the top in the case of a T-shape, the contact pieces can contact one another in the event of a short circuit and / or when moved by wind or ice unroll without changing the effective contact surface or losing contact. As a result, good electrical contact is maintained at all times when the single-column disconnector is closed and electrical losses or uncontrolled opening of the contact are avoided.
Das wenigstens eine Kontaktelement kann aus einem senkrechten und einem waagerechten Steg aufgebaut sein, wobei der Übergang der beiden Stege rechtwinklig ausgebildet ist.The at least one contact element can be constructed from a vertical and a horizontal web, the transition of the two webs being at right angles.
Alternativ kann das wenigstens eine Kontaktelement aus einem senkrechten und einem waagerechten Steg aufgebaut sein, wobei der Übergang der beiden Stegen auf jeder Seite abgerundet ausgebildet ist, insbesondere mit einem Radius, welcher sich auf jeder Seite über die gesamte Länge des waagerechten Stegs erstreckt und/oder mit einem Radius, welcher sich auf jeder Seite über die gesamte Länge des senkrechten Stegs erstreckt.Alternatively, the at least one contact element can be constructed from a vertical and a horizontal web, the transition of the two webs being rounded on each side, in particular with a radius which extends on each side over the entire length of the horizontal web and / or with a radius that extends on each side over the entire length of the vertical web.
Die Form kann abhängig der Form des Profilkörpers sein, wobei das Kontaktelement in oder an den Profilkörper angepasst ist. Bei einer Nut mit rechtwinkligen Kanten im Profilkörper ist ein guter Kontakt zwischen dem Kontaktelement und dem Profilkörper mit einem Kontaktelement zu erreichen, welches einen rechtwinklig ausgebildeten Übergang der beiden Stege aufweist und in die Nut eingelassen werden kann. Bei einer Nut mit abgerundeten Kanten im Profilkörper ist ein guter Kontakt zwischen dem Kontaktelement und dem Profilkörper mit einem Kontaktelement zu erreichen, welches einen abgerundet ausgebildeten Übergang der beiden Stege aufweist und in die Nut formschlüssig eingelassen werden kann. Neben einem guten mechanischen Sitz des Kontaktelements am oder im Profilkörper, ist so ein guter elektrischer Kontakt zwischen Profilkörper und Kontaktelement zu erreichen.The shape can be dependent on the shape of the profile body, the contact element being adapted in or on the profile body. In the case of a groove with rectangular edges in the profile body, good contact can be achieved between the contact element and the profile body with a contact element which has a right-angled transition between the two webs and can be inserted into the groove. In the case of a groove with rounded edges in the profile body, good contact can be achieved between the contact element and the profile body with a contact element which has a rounded transition between the two webs and can be inserted into the groove in a form-fitting manner. In addition to a good mechanical fit of the contact element on or in the profile body, good electrical contact between the profile body and the contact element can be achieved in this way.
Der wenigstens eine Profilkörper ist im Wesentlichen rechteckig ausgebildet, insbesondere mit abgerundeten Ecken und Kanten. Der Profilkörper ist hohl ausgebildet, und weist auf einer Seite eine durchgängige Nut auf, in welche das Kontaktelement eingelassen ist. Als Nut ist im Weiteren ebenfalls ein Spalt bzw. durchgängiger Schlitz zu verstehen.The at least one profile body is essentially rectangular, in particular with rounded corners and edges. The profile body is hollow, and has on one side a continuous groove in which the contact element is embedded. In the following, the groove is also to be understood as a gap or continuous slot.
Der wenigstens eine Profilkörper kann alternativ aus zwei stangenförmigen Hohlkörpern bestehen, welche parallel zueinander beabstandet angeordnet sind und im Wesentlichen jeweils eine ovale Form mit zwei parallelen, ebenen Seiten aufweisen, insbesondere mit zwei über einen Verbindungssteg verbundenen Seiten. Zwischen den zwei stangenförmigen Körpern ist das Kontaktelement eingelassen, insbesondere formschlüssig.The at least one profile body can alternatively consist of two rod-shaped hollow bodies which are spaced parallel to one another and essentially each have an oval shape with two parallel, flat sides, in particular with two sides connected via a connecting web. The contact element is embedded between the two rod-shaped bodies, in particular in a form-fitting manner.
Das in den Profilkörper derart eingepasste Kontaktelement kann mechanisch fixiert an dem Profilkörper fest verbunden sein, wodurch ein mechanisch stabiler Kontaktarm mit guten elektrischen Leitungseigenschaften über den gesamten Kontaktarm hinweg entsteht.The contact element fitted in this way in the profile body can be fixed in a mechanically fixed manner to the profile body, as a result of which a mechanically stable contact arm with good electrical conduction properties is produced over the entire contact arm.
Der wenigstens eine Profilkörper und das wenigstens eine Kontaktelement können über Schrauben und/oder Bolzen miteinander verbunden sein, insbesondere angeordnet auf wenigstens einer seitlichen vertikalen Fläche, welche unterhalb der Oberseite des Kontaktelements angeordnet ist, wobei die Oberseite des Kontaktelements eine elektrische Kontaktfläche bildet, welche ausgebildet ist zur Herstellung eines elektrischen Kontakts mit einem Festkontakt des Einsäulentrennschalters. Schrauben und Bolzen sind geeignet eine langzeitstabile und gut elektrisch leitende Verbindung herzustellen. Durch die Anordnung der Befestigungsteile, wie z. B. von Schrauben und/oder Bolzen auf der seitlichen vertikalen Fläche, ist die Oberfläche des Kontaktelements auf seiner Oberseite, d. h. die Kontaktfläche mit dem Festkontakt, frei von Befestigungselementen, welche einen guten Kontakt stören könnten. Dadurch steht die gesamte Kontaktfläche für einen Kontakt zur Verfügung.The at least one profile body and the at least one contact element can be connected to one another by means of screws and / or bolts, in particular arranged on at least one lateral vertical surface which is arranged below the upper side of the contact element, the upper side of the contact element forming an electrical contact surface which is formed is for making an electrical contact with a fixed contact of the single column disconnector. Screws and bolts are suitable for establishing a long-term stable and good electrical connection. By arranging the fasteners, such as. B. of screws and / or bolts on the lateral vertical surface, the surface of the contact element on its top, ie the contact surface with the fixed contact, is free of fasteners that could interfere with good contact. This means that the entire contact area is available for one contact.
Das wenigstens eine Kontaktelement kann aus Kupfer ausgebildet sein. Kupfer weist gute elektrische Eigenschaften auf und kann mechanisch stabil verarbeitet werden.The at least one contact element can be formed from copper. Copper has good electrical properties and can be processed mechanically stable.
Der wenigstens eine Profilkörper kann aus Kupfer oder Aluminium ausgebildet sein. Kupfer und Aluminium weisen als Metalle gute elektrische Eigenschaften auf, wobei Aluminium eine bessere mechanische Stabilität aufweist und Kupfer eine bessere, verlustarme Stromleitung ermöglicht. Beide Metalle sind geeignet einen mechanisch stabilen Profilkörper auszubilden und eine gute elektrische Stromleitung über den gesamten Profilkörper hinweg zu ermöglichen. Das Kontaktelement wird durch den mechanisch stabilen Profilkörper ebenfalls mechanisch stabilisiert.The at least one profile body can be made of copper or aluminum. Copper and aluminum have good electrical properties as metals, whereby aluminum has better mechanical stability and copper enables better, low-loss power conduction. Both metals are suitable to form a mechanically stable profile body and to enable good electrical power conduction across the entire profile body. The contact element is also mechanically stabilized by the mechanically stable profile body.
Ein erfindungsgemäßes Verfahren zur Verwendung eines Kontaktarms nach einem der Ansprüche 1 bis 10 in einem Einsäulentrennschalter, umfasst, dass im eingeschalteten Zustand der Strombahn des Einsäulentrennschalters ein T-förmiges Kontaktelement des beweglichen Kontaktarms, befestigt an einem Profilkörper des Kontaktarms, elektrisch und mechanisch in Kontakt steht mit einem Festkontakt, insbesondere mit einem Festkontakt in Form eines Rundstabes.A method according to the invention for using a contact arm according to one of claims 1 to 10 in a one-column disconnector, comprises that when the current path of the single-column disconnector is switched on, a T-shaped contact element of the movable contact arm, fastened to a profile body of the contact arm, is in electrical and mechanical contact with a fixed contact, in particular with a fixed contact in the form of a round rod.
Bei Bewegung des Kontaktarms am Festkontakt, insbesondere im Kurzschlussfall oder bei Wind oder bei Eisbelastung, kann ein Abrollen des Kontaktarms am Festkontakt erfolgen, wobei die Kontaktfläche zwischen Festkontakt und T-förmigem Kontaktelement, insbesondere die Oberfläche auf der Oberseite des waagerechten Stegs des T-förmigem Kontaktelements, durch deren Abrundung einen elektrischen Kontakt kontinuierlich erhält, mit gleichbleibender wirksamer Kontaktfläche zwischen Kontaktarm und Festkontakt.When the contact arm on the fixed contact moves, in particular in the event of a short circuit or in the event of wind or ice, the contact arm can roll off the fixed contact, the contact surface between the fixed contact and the T-shaped contact element, in particular the surface on the top of the horizontal web of the T-shaped Contact element, through the rounding of which receives an electrical contact continuously, with a constant effective contact area between the contact arm and the fixed contact.
Die Vorteile des erfindungsgemäßen Verfahrens zur Verwendung eines Kontaktarms in einem Einsäulentrennschalter nach Anspruch 11 sind analog den zuvor beschriebenen Vorteilen des Kontaktarms für Einsäulentrennschalter nach Anspruch 1 und umgekehrt.The advantages of the method according to the invention for using a contact arm in a single column disconnector according to
Im Folgenden werden Ausführungsbeispiele der Erfindung schematisch in den
Dabei zeigen die
- Figur 1
- schematisch in Schrägansicht einen Einsäulentrennschalter 1
mit einem Festkontakt 19 und erfindungsgemäßen Kontaktarmen 2, und Figur 2einen Kontaktarm 2, wie er inFig. 1 gezeigt ist, mit einem rechteckigem Profilkörper 5 und einem Kontaktelement 6 in Querschnittdarstellung, undFigur 3- einen Teil des Kontaktarms 2
der Figur 2 in Schrägansicht, und Figur 4- einen alternativen Kontaktarm 2, wie er in
Fig. 1 im Einsäulentrennschalter 1 gezeigt ist, mit zwei ovalen Profilkörpern 5 und einem eingepassten Kontaktelement 6 in Querschnittdarstellung, und Figur 5- einen Teil des Kontaktarms 2
der Figur 4 in Schrägansicht, und Figur 6ein Kontaktelement 6, aufgebaut aus zweiStegen 8, 9 mit rechtwinkligem Übergang zwischenden Stegen 8, 9, in Querschnittdarstellung, undFigur 7ein Kontaktelement 6, aufgebaut aus zweiStegen 8, 9 mit abgerundetem Übergang zwischenden Stegen 8, 9, in Querschnittdarstellung.
- Figure 1
- schematically in oblique view a single column disconnector 1 with a fixed
contact 19 andcontact arms 2, and - Figure 2
- a
contact arm 2, as inFig. 1 is shown, with arectangular profile body 5 and acontact element 6 in cross section, and - Figure 3
- part of the
contact arm 2 of theFigure 2 in oblique view, and - Figure 4
- an
alternative contact arm 2, as inFig. 1 is shown in the single-column disconnector 1, with twooval profile bodies 5 and a fittedcontact element 6 in a cross-sectional view, and - Figure 5
- part of the
contact arm 2 of theFigure 4 in oblique view, and - Figure 6
- a
contact element 6, constructed from twowebs 8, 9 with a right-angled transition between thewebs 8, 9, in cross-sectional view, and - Figure 7
- a
contact element 6, constructed from twowebs 8, 9 with a rounded transition between thewebs 8, 9, in cross-sectional view.
In
Der Hochspannungs-Leistungsschalter, welcher der Einfachheit halber in den Figuren nicht gezeigt ist, schaltet nach Bedarf gesteuert den Stromfluss bzw. die Hochspannung ein oder aus, d. h. die Strombahn wird verbunden oder getrennt. Der Kontakt zum Schalten ist in einem Hochspannungs-Leistungsschalter gekapselt, womit dessen Schaltzustand von außen nicht sichtbar ist. Um z. B. ein sicheres Arbeiten an einer ausgeschalteten Strombahn zu ermöglichen und den Schaltzustand sichtbar umzusetzen, wird nach dem Ausschalten des Hochspannungs-Leistungsschalters die Strombahn zusätzlich, nach außen hin sichtbar, durch einen Trennschalter getrennt. Vor dem Einschalten des Hochspannungs-Leistungsschalters wird die Strombahn nach außen hin sichtbar, durch einen Trennschalter verbunden. Das Schalten des Stromflusses bzw. der Hochspannung selbst erfolgt über den Hochspannungs-Leistungsschalter, um Effekte wie z. B. Lichtbögen beim Schalten zu beherrschen. Ein Trenner ist ausgebildet, nach dem Ausschalten bzw. vor dem Einschalten den Schaltzustand sichtbar zu machen und eine Spannungsfreiheit einer Stromleitung sicher zu gewährleisten.The high-voltage circuit breaker, which is not shown in the figures for the sake of simplicity, switches the current flow or the high voltage on or off, as required, in a controlled manner. H. the current path is connected or disconnected. The contact for switching is encapsulated in a high-voltage circuit breaker, so that its switching status is not visible from the outside. To z. B. to enable safe working on a switched-off current path and to implement the switching state visibly, after the high-voltage circuit breaker is switched off, the current path is additionally, externally visible, separated by a disconnector. Before the high-voltage circuit breaker is switched on, the current path is visible from the outside and is connected by a disconnector. The switching of the current flow or the high voltage itself takes place via the high-voltage circuit breaker in order to effect such. B. Controlling arcs when switching. A disconnector is designed to make the switching status visible after switching off or before switching on and to ensure that a power line is de-energized.
Der Einsäulentrennschalter 1, wie er in
Zur Gewährleistung eines guten elektrischen Kontakts, mit geringen elektrischen Verlusten im verbundenen Zustand, ist ein Einsäulentrennschalter 1 nach Art eines Pantografentrenners mit vier Kontaktarmen 2, in Form von zwei Kontaktarmpaaren 3, 4 ausgebildet. Analog zweier sich öffnender oder schließender paralleler Scheren bewegen sich die vier Kontaktarme 2 zum Festkontakt 19 hin oder vom Festkontakt 19 weg, bis ein guter Kontakt zwischen den Kontaktarmen 2 mit dem Festkontakt 19 erreicht wird bzw. der elektrische Kontakt sicher getrennt ist. Die Bewegung wird z. B. über einen Motor, welcher der Einfachheit halber in den Figuren nicht dargestellt ist, angetrieben und kann über ein Getriebe übertragen werden. Abschirmungen z. B. in Form von runden Blechen, können Enden der Kontaktarme 2 elektrisch abschirmen, um Koronaeffekte und elektrische Überschläge in diesen Bereichen zu verhindern.To ensure good electrical contact, with low electrical losses in the connected state, a single-column disconnector 1 is designed in the manner of a pantograph disconnector with four
Bei geschlossenem Kontakt, d. h. eingeschalteten bzw. im geschlossenem Zustand befindlichem Trenner 1, ist der Festkontakt 19 von zwei beweglichen Kontaktarmpaaren 3, 4 mit jeweils zwei beweglichen Kontaktarmen 2, zwischen den zwei beweglichen Kontaktarmen 2 jeweils eingeklemmt. Im geöffneten Zustand, wie er in
In
In der Nut ist ein Kontaktelement 6 angeordnet bzw. formschlüssig eingelassen. Das Kontaktelement 6 ist stabförmig, d. h. länglich ausgedehnt, insbesondere ohne innen hohl zu sein. Das Kontaktelement 6 weist eine T-Form im Querschnitt auf und ist analog einer Schiene ausgebildet. Seitlich sind Löcher durch das Kontaktelement 6 durchgehend, auf einer vertikalen Fläche 18 angeordnet, welchen Löcher in einer seitlichen Fläche des Profilkörpers 5, 13 zugeordnet sind. Schrauben 10 und/oder Bolzen können durch die Löcher geführt das Kontaktelement 6 am Profilkörper 5 mechanisch stabil und/oder gut elektrisch leitend befestigen.A
In
In
In
Das Kontaktstück 6, wie es in den
Durch die gekrümmte obere Oberfläche des Kontaktelements 6, mit einem Krümmungsradius r, kann ein Festkontakt 19 bei Bewegung des Kontaktarms 2 relativ zum Festkontakt 19 auf der gekrümmte oberen Oberfläche des Kontaktelements 6 abrollen. Eine Bewegung entsteht z. B. durch Umwelteinflüsse wie Wind oder Eisbelag des Kontaktarms 2 oder bei Kurzschlussströmen, durch Kräfte aus Magnetfeldern stromdurchflossener Leiter. Durch die gekrümmte Oberfläche 7 bleibt im geschlossenen Zustand des Einsäulentrennschalters 1, bei Bewegung des Kontaktarms 2 relativ zum Festkontakt 19 ein gleichbleibender elektrischer Kontakt, mit gleich großer Kontaktfläche zwischen dem Kontaktarm 2 und dem Festkontakt 19 erhalten. Der elektrische Kontakt im geschlossenen Zustand des Einsäulentrennschalters 1 bleibt zeitlich gleich, trotz Umwelteinflüssen wie z. B. Wind und Eis und/oder bei Kurzschlussströmen.Due to the curved upper surface of the
Ein guter elektrischer und mechanisch stabiler Kontakt zwischen dem Kontaktelement 6 und dem Profilkörper 5, wird durch eine möglichst große gemeinsame Kontaktfläche gebildet. Im Ausführungsbeispiel der
Im Ausführungsbeispiel der
Die zuvor beschriebenen Ausführungsbeispiele können untereinander kombiniert werden und/oder können mit dem Stand der Technik kombiniert werden. So können die Kontaktarme z. B. in verschiedene Arten von Einsäulentrennschaltern 1 verwendet werden. Es können Pantografen, Trenner mit ein, zwei oder mehr Kontaktarmen 2 verwendet werden. Es können statt Einsäulentrennschaltern 1 auch Trennschalter mit mehreren, insbesondere bewegbaren Säulen verwendet werden. Die Trenner können für eine oder mehr Phasen im Stromnetz eingesetzt werden.The exemplary embodiments described above can be combined with one another and / or can be combined with the prior art. So the contact arms z. B. be used in different types of single column disconnectors 1. Pantographs, disconnectors with one, two or
Die Profilkörper 5 können unterschiedliche Formen aufweisen. So kann ein Profilkörper 5 z. B. rechteckig, mit abgerundeten Kanten, wie in
Die Kontaktelemente 6 und Profilkörper 5 können statt durch Schrauben 10 oder Bolzen z. B. durch Schweißen oder Kleben miteinander verbunden sein. Kontaktelemente 6 und/oder Profilkörper 5 können für eine bessere elektrische Leitfähigkeit beschichtet sein, z. B. versilbert sein. Insbesondere Kontaktflächen zwischen Teilen bzw. Elementen der Kontaktarme 1 können beschichtet sein. Profilkörper 5 und/oder Kontaktelemente 7 können aus einem Material, insbesondere einem gut leitfähigen Material wie z. B. Kupfer, Stahl oder Aluminium hergestellt sein, und/oder können unterschiedliche Materialien und/oder Legierungen umfassen.The
- 11
- EinsäulentrennschalterSingle column disconnector
- 22
- KontaktarmContact arm
- 33
- erstes Kontaktarmpaarfirst pair of contact arms
- 44
- zweites Kontaktarmpaarsecond pair of contact arms
- 55
- ProfilkörperProfile body
- 66
- KontaktelementContact element
- 77
- Oberseite des KontaktelementsTop of the contact element
- 88th
- senkrechter Stegvertical web
- 99
- waagerechter Steghorizontal bridge
- 1010
- Schraube mit MutterScrew with nut
- 1111
- rechtwinkliger Übergang der Stegeright-angled transition of the webs
- 1212th
- abgerundeter Übergang der Stegerounded transition of the webs
- 1313
- Profilkörper mit rechteckiger FormProfile body with a rectangular shape
- 1414
- Profilkörper mit ovaler FormProfile body with oval shape
- 1515
- erste ebene Seitefirst level page
- 1616
- zweite ebene Seitesecond flat side
- 1717
- VerbindungsstegConnecting bridge
- 1818th
- vertikale Fläche für Schraubenvertical surface for screws
- 1919
- FestkontaktFixed contact
Claims (12)
- Contact arm (2) for a single-support disconnector (1), said contact arm having at least one profiled body (5) and at least one contact element (6), wherein the at least one profiled body (5) is configured in a rod-shaped manner and wherein the at least one contact element (6) is configured in a bar-shaped manner, and the contact element (6) has a T-profile, characterized in that
the at least one profiled body (5) is configured essentially as a rectangle and is hollow, and comprises on one side a through-going groove, and the contact element (6) is embedded in said through-going groove. - Contact arm (2) according to Claim 1,
characterized in that
the at least one contact element (6) has a T-profile along its entire length, in particular precisely a T-profile, and is configured in the shape of an elongated, straight current rail having at least one electrical contact surface. - Contact arm (2) according to any one of the preceding claims,
characterized in that
the at least one contact element (6) is configured on its upper face (7) rounded with a radius r, in particular the entire upper face (7) of the at least one contact element (6) is rounded, wherein the upper face (7) forms an electrical contact surface. - Contact arm (2) according to any one of the preceding claims,
characterized in that
the at least one contact element (6) is constructed from a perpendicular web and a horizontal web, wherein the transition (11) between the two webs is configured at a right angle. - Contact arm (2) according to any one of Claims 1 to 3,
characterized in that
the at least one contact element (6) is constructed from a perpendicular web and a horizontal web, wherein the transition (12) between the two webs is configured on each side in a rounded manner, in particular with a radius that extends on each side over the entire length of the horizontal web and/or with a radius that extends on each side (18) over the entire length of the perpendicular web. - Contact arm (2) according to any one of the preceding claims,
characterized in that
the at least one essentially rectangular profiled body (5) is configured with rounded corners and edges. - Contact arm (2) according to any one of Claims 1 to 5,
characterized in that
the at least one profiled body (5) comprises two rod-shaped hollow bodies, which are arranged spaced apart parallel to one another and essentially in each case have an oval shape (14) with two parallel planar sides (15, 16), in particular with two sides that are connected via a connecting web (17), and the contact element (6) is embedded between the two rod-shaped bodies, in particular in a positive-locking manner. - Contact arm (2) according to any one of the preceding claims,
characterized in that
the at least one profiled body (5) and the at least one contact element (6) are connected to one another via screws (10) and/or studs, in particular arranged on at least one lateral perpendicular surface (18) that is arranged below the upper face (7) of the contact element (6), wherein the upper face (7) of the contact element (6) forms an electrical contact surface that is configured for producing an electrical contact with a fixed contact (19) of the single-support disconnector (1). - Contact arm (2) according to any one of the preceding claims,
characterized in that
the at least one contact element (6) is embodied from copper. - Contact arm (2) according to any one of the preceding claims,
characterized in that
the at least one profiled body (5) is embodied from copper or aluminum. - Method for use of a contact arm (2) according to any one of the preceding Claims 1 to 10 in a single-support disconnector (1), wherein in the switched-on state of the current path of the single-support disconnector (1) a T-shaped contact element (6) of the movable contact arm (2) fastened to a profiled body (5) of the contact arm (2) is in electrical and mechanical contact with a fixed contact (19), in particular with a fixed contact (19) in the form of a round bar.
- Method according to Claim 11,
characterized in that
as the contact arm (2) moves on the fixed contact (19), in particular in the case of a short circuit or in the case of wind or an ice loading, the contact arm (2) rolls along the fixed contact (19), wherein the contact surface between the fixed contact (19) and the T-shaped contact element (6), in particular the surface on the upper face (7) of the horizontal web of the T-shaped contact element (6), by virtue of its rounded design continuously maintains an electrical contact with a constantly effective contact surface between the contact arm (2) and the fixed contact (19).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17739932T PL3469612T3 (en) | 2016-08-03 | 2017-07-06 | Contact arm for a pantograph disconnector and use of said contact arm |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016214372.7A DE102016214372B4 (en) | 2016-08-03 | 2016-08-03 | Contact arm for single column disconnector and its use |
PCT/EP2017/067004 WO2018024436A1 (en) | 2016-08-03 | 2017-07-06 | Contact arm for a pantograph disconnector and use of said contact arm |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3469612A1 EP3469612A1 (en) | 2019-04-17 |
EP3469612B1 true EP3469612B1 (en) | 2020-03-04 |
Family
ID=59350901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17739932.6A Active EP3469612B1 (en) | 2016-08-03 | 2017-07-06 | Contact arm for a pantograph disconnector and use of said contact arm |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3469612B1 (en) |
CN (1) | CN109564831B (en) |
BR (1) | BR112019001271A2 (en) |
DE (1) | DE102016214372B4 (en) |
PL (1) | PL3469612T3 (en) |
WO (1) | WO2018024436A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018216721A1 (en) | 2018-09-28 | 2020-04-02 | Siemens Aktiengesellschaft | Contact arm and method for contacting a circuit breaker |
DE102018216723A1 (en) * | 2018-09-28 | 2020-04-02 | Siemens Aktiengesellschaft | Contact arrangement for a disconnector and method for electrically contacting the contact arrangement |
DE102019213320A1 (en) | 2019-09-03 | 2021-03-04 | Siemens Energy Global GmbH & Co. KG | Single column disconnector with vacuum interrupter as an auxiliary contact system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE555956C (en) | 1930-09-03 | 1932-08-01 | Siemens Schuckertwerke Akt Ges | Rotary disconnector |
US3388225A (en) * | 1966-09-29 | 1968-06-11 | Ite Circuit Breaker Ltd | Jaw for ice breaking switch |
DE3006676C2 (en) * | 1980-02-22 | 1982-04-29 | Ruhrtal Elektrizitätsgesellschaft Hartig GmbH & Co, 4300 Essen | Scissor disconnector |
CH659539A5 (en) * | 1982-05-28 | 1987-01-30 | Sprecher & Schuh Ag | SCISSOR DISCONNECTOR. |
WO1992007373A1 (en) * | 1990-10-12 | 1992-04-30 | Elin Energieversorgung Gesellschaft M.B.H. | Isolating switch |
CN102543549B (en) * | 2012-02-10 | 2014-01-29 | 成都中工电气工程有限公司 | Isolating switch body of railway traffic |
-
2016
- 2016-08-03 DE DE102016214372.7A patent/DE102016214372B4/en active Active
-
2017
- 2017-07-06 CN CN201780047886.7A patent/CN109564831B/en active Active
- 2017-07-06 PL PL17739932T patent/PL3469612T3/en unknown
- 2017-07-06 BR BR112019001271-0A patent/BR112019001271A2/en active Search and Examination
- 2017-07-06 EP EP17739932.6A patent/EP3469612B1/en active Active
- 2017-07-06 WO PCT/EP2017/067004 patent/WO2018024436A1/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
DE102016214372A1 (en) | 2018-02-08 |
PL3469612T3 (en) | 2020-08-24 |
CN109564831A (en) | 2019-04-02 |
DE102016214372B4 (en) | 2020-01-09 |
CN109564831B (en) | 2020-10-30 |
WO2018024436A1 (en) | 2018-02-08 |
BR112019001271A2 (en) | 2019-04-30 |
EP3469612A1 (en) | 2019-04-17 |
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