EP2797095B1 - Tulpenkontakt für einen Leistungsschalter - Google Patents

Tulpenkontakt für einen Leistungsschalter Download PDF

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Publication number
EP2797095B1
EP2797095B1 EP13164681.2A EP13164681A EP2797095B1 EP 2797095 B1 EP2797095 B1 EP 2797095B1 EP 13164681 A EP13164681 A EP 13164681A EP 2797095 B1 EP2797095 B1 EP 2797095B1
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EP
European Patent Office
Prior art keywords
contact
tulip contact
tulip
end portion
copper
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.)
Not-in-force
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EP13164681.2A
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English (en)
French (fr)
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EP2797095A1 (de
Inventor
Franceso PISU
Helmut Heiermeier
Nicola Gariboldi
Reto Karrer
Sami Kotilainen
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ABB Technology AG
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ABB Technology AG
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Publication date
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Priority to EP13164681.2A priority Critical patent/EP2797095B1/de
Publication of EP2797095A1 publication Critical patent/EP2797095A1/de
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Publication of EP2797095B1 publication Critical patent/EP2797095B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • 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
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
    • H01H33/74—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas

Definitions

  • Embodiments of the present disclosure relate to a tulip contact for a circuit breaker configured for receiving a corresponding plug. Further, embodiments of the present disclosure relate to a circuit breaker comprising a tulip contact described herein and the corresponding plug. Additionally, embodiments of a method for producing a tulip contact for a circuit breaker are disclosed.
  • tulip contacts are used in medium and/or high voltage circuit breakers which are typically used for interrupting a short circuit current when an electrical fault occurs.
  • a tulip contact comprises multiple contact fingers for establishing and disconnecting an electrical contact with a mating contact, such as a corresponding plug.
  • the operating sequence of a circuit breaker is such that in case a fault is detected, 300 ms after an opening of the contact elements for clearing the short circuit current, the circuit breaker contact elements (i.e. a tulip contact and a corresponding mating plug) reclose in order to ensure system stability. Thereafter, in case the fault has vanished the circuit-breaker remains closed (i.e. with its contacts being closed). Otherwise, in cases in which the fault still exists, the contact elements close against the short circuit and immediately open again to clear the short circuit current. In such cases the circuit breaker closes against the full short circuit current. During that operation the contact elements of the circuit breaker are subjected to high dielectric stress, the load of which mainly depends on the voltage applied.
  • some of the key parameters among others are in particular a sufficient opening and closing speed of the contact elements.
  • the opening speed has to be high enough to interrupt a short circuit.
  • the contact distance has to be large enough to withstand a recovery voltage rising between the contact elements after current interruption.
  • a certain speed is required to limit the pre-arcing time, which is the time from the breakdown instant of the current to the instant of re-contact of the contact elements. Thereby a closure against a possibly still existing short circuit can be ensured.
  • the closing speed of the contact elements is a parameter which shall be increased for applications with increasing voltage ratings in order to ensure a controlled closing of the circuit breaker.
  • Conventional circuit breakers are limited with respect to their performance due to the high loads occurring at high closing speeds and increased voltage ratings which may cause the contact elements to fail.
  • EP 0 700 062 A1 discloses a high-voltage circuit breaker with contact fingers integrally formed into a metal tube by slotting.
  • the tube is made of copper or self-resilient material, such as beryllium copper.
  • a tulip contact for a circuit breaker according to claim 1 configured for receiving a corresponding plug.
  • the tulip contact comprises a tubular base portion from which a plurality of contact fingers extends substantially in a direction of a longitudinal axis of the tulip contact.
  • a free-leading end portion of the contact fingers is configured for establishing an arc with the corresponding plug.
  • the tulip contact comprises a high-strength portion having a Young's modulus of 90 GPa to 140 GPa and a yield stress of 500 MPa to 1350 MPa.
  • circuit breaker comprising a tulip contact described herein and the corresponding plug according to claim 10 is provided.
  • a method for producing a tulip contact for a circuit breaker according to claim 11 comprises: providing a tubular raw material piece having a longitudinal axis and comprising a base portion, an end portion and a high-strength portion containing a material having a Young's modulus of 90 GPa to 140 GPa and a Yield stress of 500 MPa to 1350 MPa; shaping the tubular raw material piece, preferably by milling; and cutting the tubular raw material piece from the side of the end portion in a direction of the longitudinal axis, thereby forming contact fingers extending substantially in a direction of the longitudinal axis of the tulip contact.
  • finger root portion is defined as a portion which partially extends into a base portion of the tulip contact and partially extends into the contact fingers extending from the tubular base portion. In case that the fingers are produced by cutting a tubular raw material piece from one end, the finger root portion is at the position at which the cut ends.
  • the term "remaining portion” may be understood as all remaining portions of a tulip contact or as a remaining portion not including a base portion of a tulip contact.
  • Fig. 1 shows a cross-sectional view of a tulip contact 10 according to embodiments described herein.
  • the tulip contact 10 is employed for a circuit breaker 10 and configured for receiving a corresponding plug.
  • the tulip contact 10 includes a tubular base portion 25 from which a plurality of contact fingers 20 extend substantially in a direction of a longitudinal axis 26 of the tulip contact 10.
  • a free-leading end portion 23 of the contact fingers 20 is configured for establishing an arc with the corresponding plug 11.
  • the corresponding plug and/or the tulip contact are movable relative to one another along a or the longitudinal axis 26 of the tulip contact to establish or interrupt an electrical (and mechanical) contact.
  • the tulip contact 10 comprises a high-strength portion 21 having a Young's modulus of 90 GPa to 140 GPa, particularly approximately 120 GPa, and a yield stress of 500 MPa to 1350 MPa.
  • the high-strength portion 21 of the contact fingers 20 includes the base portion 25.
  • the free-leading end portion 23 is welded to the high-strength portion 21.
  • a welded joint 33 is provided between the high strength portion 21 and the free-leading end portion 23.
  • the contact fingers 20 merge into the base portion at a particular position, such as shown by the exemplarily chosen position represented by the dotted line 24 in Fig. 1 .
  • the plurality of contact fingers 20 can be arranged radially around the longitudinal axis 26 of the tulip contact 10.
  • contact surfaces of the tulip contact in particular contact surfaces of the contact fingers 20, preferably at the free-leading end portions 23 of the contact fingers 20, are provided.
  • the contact fingers 20 are configured such that in a closed state, i.e. when the tulip contact forms contact with the corresponding plug, a contact pressure is applied by the corresponding plug to the contact surfaces of the contact fingers.
  • the high-strength portion 21 has a Young's modulus between a lower limiting value of 90 GPa, particularly 100 GPa, more particularly 110 GPa to a upper limiting value of 140 GPa, particularly 130 GPa, more particularly 120 GPa and a yield stress between a lower limiting value of 500 MPa, particularly 600 MPa, more particularly 700 MPa to a upper limiting value of 1350 MPa, particularly 1200 MPa, more particularly 1000 MPa.
  • a tulip contact having contact fingers which withstand high loads occurring during high speed closing operation of a circuit breaker is provided.
  • the contact fingers 20 are configured such that they do not deform or break upon high speed closing operations. Consequently, the tulip contact 10 is configured for applications with increasing closing speeds and increasing voltage ratings, since the tulip contact 10, in particular the contact fingers 20, can withstand increased mechanical and dielectric stresses.
  • the kinetic energy is introduced into the contact elements, e.g. the tulip contact 10 and/or the corresponding plug 11.
  • the contact fingers 20 are configured such that they are forced to deflect when they form contact with the corresponding mating plug 11.
  • a deflection of the contact fingers 20 yields an increased material stress particularly in the root portions of the contact fingers 10.
  • the high-strength portion 21 includes a finger root portion at which the contact fingers 20 extend from the base portion 25.
  • a portion of the contact fingers, which is disadvantageously prone to high material stress is improved with respect to its material strength.
  • the contact fingers 20 with a high-strength portion 21 it can substantially be avoided that a stress resulting from an impact of the contact elements 10, 11 during closing exceeds the yield stress of the contact finger material.
  • the contact fingers 20 are configured such that they do not deform or break upon high speed closing operations. Hence, a deformation of the contact fingers 20 such that they may even remain plasticized is substantially avoided.
  • the high-strength portion 21 contains less than 10 wt% copper (Cu), preferably is copperless, and wherein a remaining portion of the tulip contact 10 comprises copper, preferably more than 50 wt% copper.
  • a tulip contact 10 combining the required electrical conductivity properties, mainly represented by the copper containing portions, with high-strength material properties, mainly represented by the high-strength portion 21, is provided.
  • the Young's modulus of the high-strength portion 21 substantially corresponds to the Young's modulus of the remaining portion of the tulip contact 10 which typically comprises copper, preferably more than 50 wt% copper.
  • the yield stress of the high-strength portion 21 shall substantially be twice the yield stress of the remaining portion of the tulip contact which may comprise copper, preferably more than 50 wt% copper.
  • the mechanical properties of the tulip contact 10 can be improved while essentially achieving electrical conductivity properties comparable to known contact elements for circuit breakers.
  • a tulip contact 10 with improved mechanical performance is provided without changing the dimensions of the particular design of the tulip contact 10.
  • the high-strength portion 21 comprises titanium.
  • the high-strength portion 21 comprises titanium alloy including at least one of an alpha phase, near-alpha phase and alpha-beta phase.
  • the titanium alloy comprises at least one of the components of A1 (Aluminum) from 4 wt% to 10 wt%, Sn (Tin) from 1 wt% to 13 wt%, V (Vanadium) from 2 wt% to 15 wt%, Zr (Zirconium) from 0 wt% to 6 wt%; Mo (Molybdenum) from 0 wt% to 13 wt%, Si (Silicium) from 0 wt% to 3 wt%, Cr (Chromium) from 0 wt% to 13 wt%.
  • titanium alloy for the high-strength portion 21 By using titanium alloy for the high-strength portion 21 the required tensile strength can be provided. Further, since titanium alloys are light in weight their application as a material for the tulip contact 10 as described herein, e.g. for the high-strength portion 21, results in a reduction of the total weight of the tulip contact 10. Thereby a reduction of the impact of the tulip contact 10 with the corresponding plug 11 during high speed closing operation of the circuit breaker can be achieved. Additionally, since titanium alloys have a high melting point temperature their application in the tulip contact 10 according to the embodiments described herein leads to a prevention of erosion, at least to some extent.
  • the free-leading end portion 23 contains CuW (Copper-Tungsten).
  • CuW Copper-Tungsten
  • a leading end portion having high heat resistance, high electrical and thermal conductivity, and low thermal expansion is provided.
  • a free-leading end portion 23 comprising CuW as contact material a contact finger leading end is provided which is substantially resistant to erosion caused by an electric arc.
  • a base side of the high-strength portion 21 is welded to the base portion 25, and a tip side of the high-strength portion 21 is welded to a transition portion 22 which is welded to the free-leading end portion 23.
  • a first welded joint 31 can be provided between the base side of the high-strength portion 21 and the base portion 25
  • a second welded joint 32 can be provided between the tip side of the high-strength portion 21 and the transition portion 22
  • a third welded joint 33 can be provided between the transition portion 22 and the free-leading end portion 23.
  • a copper containing material preferably pure copper, is used for the formation of the first, second, and/or the third welded joint 31, 32, 33.
  • the tip side of the high-strength portion 21 is welded to the adjacent free-leading end portion 23.
  • a tulip contact 10 having a high-strength portion 21 which extends from the base portion to the free-leading end portion 23 is provided.
  • a titanium alloy is used for the high-strength portion 21.
  • the tulip contact 20 can further comprise a conductor stripe 40.
  • the tulip contact 10 can comprise at least one conductor stripe 40 connected to the free-leading end portion 23 for conducting an arcing current to the base portion 25.
  • the at least one conductor stripe 40 is configured being elastic such that the conductor stripe 40 can assimilate deflections of the contact fingers 20 during opening and/or closing operations of the circuit breaker.
  • the at least one conductor stripe 40 ccomprises a copper alloy, the copper alloy having preferably a copper content of at least 70 wt%, particularly at least 80 wt%, more particularly at least 90 wt%.
  • the at least one conductor stripe 40 is made of pure copper.
  • the conductor stripe 40 is can be configured for conducting a current having a current rating between a lower limiting value of 1 kA, particularly 2 kA, more particularly 4 kA and an upper limiting value of 10 kA, particularly 7 kA, more particularly 5 kA.
  • the contact resistance between the conductor stripe 40 and the free-leading end portion 23 as well as the contact resistance between the conductor stripe 40 and the base portion 25 is below 60 ⁇ , particularly below 50 ⁇ , more particularly below 40 ⁇ .
  • the at least one conductor stripe 40 is fixed to the contact fingers 20, e.g. the leading end portion 23 and the base portion 25 by screws or clamps.
  • the conductor stripe 40 can be fixed to the contact fingers 20 via welding.
  • the electrical resistivity of the conductor stripe 40 is below 60 ⁇ m, particularly below 50 ⁇ m, more particularly below 40 ⁇ m.
  • the tulip contact 10 comprises a conductor stripe 40 which is attached on an outer radial surface of the contact fingers 20 along a length ranging from the base portion 25 to the free-leading end portion 23.
  • a conductor stripe 40 which is attached on an outer radial surface of the contact fingers 20 along a length ranging from the base portion 25 to the free-leading end portion 23.
  • the conductor stripe 40 guarantees the required electrical conductivity whereas the high-strength portion 21 according to embodiments described herein provides the required mechanical strength for high voltage applications.
  • a circuit breaker (not shown) comprising a tulip contact 10 described herein and the corresponding plug 11 is provided.
  • the circuit breaker is configured for voltage ratings from a lower limit of 50 kV, particularly 100 kV, more particularly 200 kV to a upper limit of 700 kV, particularly 500 kV, more particularly 300 kV.
  • a method for producing a tulip contact 10 includes: providing 510 a tubular raw material piece 50 having a longitudinal axis 26 and comprising a base portion 25, an end portion 23 and a high-strength portion 21 containing a material having a Young's modulus of 90 GPa to 140 GPa, particularly approximately 120 GPa, and a yield strength of 500 MPa to 1350 MPa; shaping 520 the tubular raw material piece 50, preferably by milling; cutting 530 the tubular raw material piece 50 from the side of the end portion 23 in a direction of the longitudinal axis 26, thereby forming contact fingers 20 extending substantially in a direction of the longitudinal axis 26 of the tulip contact 10.
  • the base portion 25 is the portion which follows behind the cut by which the fingers 20 are formed.
  • the high-strength portion 21 has a Young's modulus between a lower limiting value of 90 GPa, particularly 100 GPa, more particularly 110 GPa to an upper limiting value of 140 GPa, particularly 130 GPa, more particularly 120 GPa and a yield stress between a lower limiting value of 500 MPa, particularly 600 MPa, more particularly 700 MPa to a upper limiting value of 1350 MPa, particularly 1200 MPa, more particularly 1000 MPa.
  • the high-strength portion 21 contains less than 10 wt% copper, preferably is copperless, and wherein a remaining portion of the tulip contact 10 comprises copper, preferably more than 50 wt% copper.
  • a tulip contact 10 combining the required electrical conductivity properties, mainly represented by the copper containing portions, with high-strength material properties, mainly represented by the high-strength portion, is provided.
  • the the high-strength portion 21 comprises titanium.
  • the high-strength portion 21 comprises titanium alloy including at least one of an alpha phase, near-alpha phase and alpha-beta phase.
  • the titanium alloy comprises at least one of the components of Al from 4 wt% to 10 wt%, Sn from 1 wt% to 13 wt%, V from 2 wt% to 15 wt%, Zr from 0 wt% to 6 wt%; Mo from 0 wt% to 13 wt%, Si from 0 wt% to 3 wt%, Cr from 0 wt% to 13 wt%.
  • the end portion 23 contains CuW.
  • a leading end portion having high heat resistance, high electrical and thermal conductivity, and low thermal expansion is provided.
  • an end portion comprising CuW as contact material a contact finger leading end is provided which is substantially resistant to erosion caused by an electric arc.
  • the Young's modulus of the high-strength portion 21 substantially corresponds to the Young's modulus of the remaining portion of the tulip contact 10 which can comprise copper, preferably more than 50 wt% copper. Further, the yield stress of the high-strength portion 21 can be chosen to be substantially twice the yield stress of the remaining portion of the tulip contact which can comprise copper, preferably more than 50 wt% copper.
  • the raw material piece used for the method for producing the tulip contact 10 is a tubular raw material piece 50, comprising a base portion 25, a high strength portion 21, and an end portion 23 (see Fig. 6 ).
  • the tubular raw material piece 50 further comprises a transition portion 22 provided between the high strength portion 21 and the end portion 23, as exemplarily shown in Fig. 6 .
  • a base side of the high-strength portion 21 of the raw material piece is welded to the base portion 25, and a tip side of the high-strength portion 21 is welded to the transition portion 22 which is welded to the end portion 23 (see Fig. 6 ).
  • the raw material piece is provided with a first welded joint 31 between the base side of the high-strength portion 21 and the base portion 25, a second welded joint 32 between the tip side of the high-strength portion 21 and the transition portion 22, and a third welded joint 33 between the transition portion 22 and the end portion 23.
  • a copper containing material preferably pure copper, is employed for the formation of the first, second, and a third welded joint 31, 32, 33.
  • the method for producing a tulip contact 10 providing 510 the tubular raw material piece 50 includes welding the high-strength portion 21 to a base portion 25 and to a transition portion 22, as well as welding the transition portion 22 to the end portion 23.
  • the method for producing a tulip contact 10 includes attaching a conductor stripe 40 to at least the end portion 23 of the shaped tubular raw material piece 50 prior to the cutting the contact fingers 20.
  • the at least one conductor stripe 40 comprises a copper alloy, the copper alloy having preferably a copper content of at least 70 wt%, particularly at least 80 wt%, more particularly at least 90 wt%.
  • the at least one conductor stripe 40 is made of pure copper.
  • the conductor stripe 40 is typically configured for conducting a current having a current rating between a lower limiting value of 1 kA, particularly 2 kA, more particularly 4 kA and a upper limiting value of 10 kA, particularly 7 kA, more particularly 5 kA.
  • the contact resistance between the conductor stripe 40 and the end portion 23 as well as the contact resistance between the conductor stripe 40 and the base portion 25 is below 60 ⁇ , particularly below 50 ⁇ , more particularly below 40 ⁇ .
  • the at least one conductor stripe 40 is fixed to the contact fingers 20, e.g. the leading 23 end portion and/or the base portion 25, by screws or clamps. Additionally or alternatively, the conductor stripe 40 can be fixed to the contact fingers 20 via welding.
  • the electrical resistivity of the conductor stripe 40 is below 60 ⁇ m, particularly below 50 ⁇ m, more particularly below 40 ⁇ m.
  • attaching the conductor stripe 40 includes at least one of welding, screwing and clamping. Typically, attaching the conductor stripe 40 is performed prior to cutting 530 the tubular raw material piece 50. Thereby, the method for producing a tulip contact 10 can be simplified and carried out more cost-efficiently.

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Claims (14)

  1. Tulpenkontakt (10) für einen Leistungsschalter zur Aufnahme eines entsprechenden Stifts (11), wobei der Tulpenkontakt (10) einen rohrförmigen Basisteil (25) aufweist, von dem aus sich mehrere Kontaktfinger (20) im Wesentlichen in einer Richtung einer Längsachse (26) des Tulpenkontakts (10) erstrecken, wobei ein freier Endbereich (23) der Kontaktfinger (20) für das Erzeugen eines Lichtbogens mit dem entsprechenden Stift (11) konfiguriert ist, dadurch gekennzeichnet, dass der Tulpenkontakt (10) einen hochfesten Bereich (21) aufweist, der einen Elastizitätsmodul von 90 GPa bis 140 GPa und eine Streckgrenze von 500 MPa bis 1350 MPa aufweist und weniger als 10 Gew.-% Kupfer enthält, und dass ein übriger Teil des Tulpenkontakts (10) mehr als 50 Gew.-% Kupfer enthält.
  2. Tulpenkontakt (10) nach Anspruch 1, wobei der hochfeste Bereich (21) einen Fingerwurzelbereich (21) aufweist, an dem sich die Kontaktfinger (20) vom Basisbereich (25) aus erstrecken.
  3. Tulpenkontakt (10) nach Anspruch 1 oder 2, wobei der hochfeste Bereich (21) frei von Kupfer ist.
  4. Tulpenkontakt (10) nach einem der Ansprüche 1 bis 3, wobei der hochfeste Bereich (21) Titan enthält.
  5. Tulpenkontakt (10) nach Anspruch 4, wobei der hochfeste Bereich (21) eine Titanlegierung enthält, die mindestens eine von Alpha-Phase, Alpha-naher Phase und Alpha-Beta-Phase umfasst, und wobei die Titanlegierung mindestens eine der Komponenten von Al von 4 Gew.-% bis 10 Gew.-%, Sn von 1 Gew.-% bis 13 Gew.-%, V von 2 Gew.-% bis 15 Gew.-%, Zr von 0 Gew.-% bis 6 Gew.-%; Mo von 0 Gew.-% bis 13 Gew.-%, Si von 0 Gew.-% bis 3 Gew.-%, Cr von 0 Gew.-% bis 13 Gew.-% aufweist.
  6. Tulpenkontakt (10) nach einem der Ansprüche 1 bis 5, wobei der freie Endbereich (23) CuW aufweist.
  7. Tulpenkontakt (10) nach einem der Ansprüche 1 bis 6, wobei eine Basisseite des hochfesten Bereichs (21) an den Basisbereich (25) angeschweißt ist, und wobei eine Spitzenseite des hochfesten Bereichs (21) an einen von (i) einem Übergangsbereich (22), der am freien Endbereich (23) angeschweißt ist, oder (ii) den angrenzenden freien Endbereich (23) angeschweißt ist.
  8. Tulpenkontakt (10) nach einem der Ansprüche 1 bis 7, wobei der Tulpenkontakt (10) mindestens einen Leiterstreifen (40) aufweist, der mit dem freien Endbereich (23) und dem Basisbereich (25) zum Leiten eines Lichtbogenstroms zum führenden Endbereich verbunden ist.
  9. Tulpenkontakt (10) nach Anspruch 8, wobei der mindestens eine Leiterstreifen (40) eines aus reinem Kupfer und einer Kupferlegierung aufweist, wobei die Kupferlegierung bevorzugt einen Kupfergehalt von mindestens 80 Gew.-% aufweist.
  10. Leistungsschalter, aufweisend einen Tulpenkontakt (10) nach einem der Ansprüche 1 bis 9 und einen entsprechenden Stift (11).
  11. Verfahren zum Herstellen eines Tulpenkontakts (10) für einen Leistungsschalter, wobei das Verfahren Folgendes aufweist:
    a) Bereitstellen (510) eines rohrförmigen Rohstoffstücks (50), aufweisend eine Längsachse (26) und einen Basisbereich (25) sowie einen Endbereich (23);
    b) Formen (520) des rohrförmigen Rohstoffstücks (50), bevorzugt durch Fräsen;
    c) Schneiden (530) in das rohrförmige Rohstoffstück (50) von der Seite des Endbereichs (23) aus in einer Richtung der Längsachse (26), wobei die sich im Wesentlichen in einer Richtung der Längsachse (26) des Tulpenkontakts (10) erstreckenden Kontaktfinger (20) gebildet werden, dadurch gekennzeichnet, dass das rohrförmige Rohstoffstück (50) einen hochfesten Bereich (21) aufweist, der ein Material mit einem Elastizitätsmodul von 90 GPa bis 140 GPa und eine Streckgrenze von 500 MPa bis 1350 MPa aufweist und weniger als 10 Gew.-% Kupfer enthält, und dass ein übriger Teil des Tulpenkontakts (10) mehr als 50 Gew.-% Kupfer enthält.
  12. Verfahren zum Herstellen eines Tulpenkontakts (10) nach Anspruch 11, wobei das Bereitstellen (510) eines rohrförmigen Rohstoffstücks (50) Schweißen des hochfesten Bereichs (21) an den Basisbereich (25) und an einen Übergangsbereich (22) sowie Schweißen des Übergangsbereichs (22) an den Endbereich (23) umfasst.
  13. Verfahren zum Herstellen eines Tulpenkontakts (10) nach Anspruch 11 oder 12, wobei das Verfahren ein Anbringen eines Leiterstreifens (40) an mindestens dem Endbereich (23) vor dem Schneiden der Kontaktfinger (20) umfasst.
  14. Verfahren zum Herstellen eines Tulpenkontakts (10) nach Anspruch 13, wobei das Anbringen des Leiterstreifens (40) mindestens eines von Schweißen, Schrauben und Spannen umfasst.
EP13164681.2A 2013-04-22 2013-04-22 Tulpenkontakt für einen Leistungsschalter Not-in-force EP2797095B1 (de)

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EP13164681.2A EP2797095B1 (de) 2013-04-22 2013-04-22 Tulpenkontakt für einen Leistungsschalter

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EP13164681.2A EP2797095B1 (de) 2013-04-22 2013-04-22 Tulpenkontakt für einen Leistungsschalter

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EP2797095A1 EP2797095A1 (de) 2014-10-29
EP2797095B1 true EP2797095B1 (de) 2015-11-04

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105448547A (zh) * 2015-12-11 2016-03-30 平高集团有限公司 弧触头及使用该弧触头的高压开关
EP3796353A1 (de) * 2019-09-20 2021-03-24 Siemens Energy Global GmbH & Co. KG Kontaktanordnung

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Publication number Priority date Publication date Assignee Title
DE3002803A1 (de) * 1980-01-26 1981-07-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Autopneumatischer druckgasschalter
DE3062021D1 (en) * 1979-07-16 1983-03-24 Licentia Gmbh High voltage circuit breaker
SE9402970L (sv) * 1994-09-05 1996-03-06 Asea Brown Boveri Högspänningsbrytare
ES2347786T3 (es) * 2004-12-21 2010-11-04 Abb Technology Ag Sistema de contacto para un aparato de conmutacion electrica.

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