WO2020126303A1 - Commutateur à double buse et procédé de commutation de courants élevés dans la technique haute tension - Google Patents

Commutateur à double buse et procédé de commutation de courants élevés dans la technique haute tension Download PDF

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Publication number
WO2020126303A1
WO2020126303A1 PCT/EP2019/082175 EP2019082175W WO2020126303A1 WO 2020126303 A1 WO2020126303 A1 WO 2020126303A1 EP 2019082175 W EP2019082175 W EP 2019082175W WO 2020126303 A1 WO2020126303 A1 WO 2020126303A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact piece
fixed contact
electrically insulating
insulating material
double nozzle
Prior art date
Application number
PCT/EP2019/082175
Other languages
German (de)
English (en)
Inventor
Lutz-Rüdiger JÄNICKE
Martin PORSCHATIS
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2020126303A1 publication Critical patent/WO2020126303A1/fr

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Classifications

    • 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
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7038—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle
    • H01H33/7053—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by a conducting tubular gas flow enhancing nozzle having a bridging element around two hollow tubular contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle

Definitions

  • the invention relates to a double nozzle switch and a method for switching high currents in high-voltage technology with at least one electrical contact, which comprises at least a first and at least a second fixed contact piece as well as at least a first, movable bridging contact piece.
  • the contact pieces are formed out of a hollow tube, for flow with a switching gas flow.
  • a double nozzle switch for switching high currents in high voltage technology is e.g. B. from EP 0 024 252 Al be known.
  • the double nozzle switch comprises an electrical contact with two fixed contact pieces and a movable bridging contact piece.
  • the bridging contact piece is moved when switching on or when closing a current path between the two fixed contact pieces such that the bridging contact piece electrically connects the fixed contact pieces.
  • the bridging contact piece is moved away from a fixed contact piece via the second fixed contact piece in such a way that an electrically insulating area is formed between the fixed contact pieces and the current path is interrupted.
  • the electrical contact of the double nozzle switch is arranged in a housing which is filled with switching gas, in particular clean air and / or SF 6 .
  • the housing includes e.g. B. a circular cylindrical insulator with ribs on the outer circumference, which extend a leakage current length along the longitudinal axis of the housing Ge.
  • the circular-cylindrical insulator is sealed gas-tight and comprises electrical connections for contacting electrical lines, Electricity consumers and / or electricity generators.
  • the isolator is e.g. B. made of ceramic, silicone and / or a composite material.
  • a drive, in particular an electric motor and / or Fe storage drive, is provided to z. B. on elements egg ner kinematic chain, in particular transmission elements and / or a shift rod to drive the movable bridging contact piece when switching or to move.
  • an arc can occur in particular when the double nozzle switch is switched off between the contact pieces.
  • the arc prevents the current path from being completely interrupted via the contact and can damage the contact pieces in particular.
  • a switching gas flow in the double nozzle switch is used to extinguish the arc.
  • the contact pieces are hollow cylindrical, with a continuous gas channel or opening along the longitudinal axis of the respective contact piece, d. H. a continuous cavity inside the respective contact piece. The arc ignites or burns when switching between the contact pieces, in particular in the cavity inside the contact pieces.
  • a compression device which is arranged around the fixed contact pieces, presses switching or insulating gas when switching between the fixed contact pieces in the cavity of the contact pieces and through the hollow inner area of the contact pieces, in particular the area in which when switching the arc is trained.
  • the gas flow extends the arc and spatially pulls the contact points of the arc with the fixed contact pieces apart. This increases the burning voltage of the arc and the arc can go out and / or is blown out.
  • the arc tends due to the good electrically conductive, metallic inner surface of the contact pieces to shorten it by placing the arc inside the contact pieces, which lowers the operating voltage and makes it difficult to extinguish the arc.
  • the object of the present invention is to provide a double nozzle switch and a method for switching high currents in high-voltage technology, which solve the problems described above.
  • it is an object to provide a simple and inexpensive double nozzle switch which enables simple and quick extinguishing of an arc.
  • a double nozzle switch according to the invention for switching high currents in high-voltage technology comprises at least one electrical contact, which comprises at least a first and at least a second fixed contact piece and at least a first, movable bridging contact piece, the contact pieces being designed as hollow tubes for flowing through with a switching gas flow.
  • electrically isolating the material is arranged in and / or on the at least one first and / or in and / or on the at least one second fixed contact piece.
  • the electrically insulating material prevents the arc from starting in the area of the electrically insulating material than on the contact pieces.
  • the switching gas is driven or pressed into the hollow tubular solid contact pieces.
  • the arcing contact points at which the arcing is in contact with the contact pieces, ie at which the arcing begins or ends, migrate in particular without electrically insulating material through the switching gas flow from the particularly opposite ends of the fixed contact pieces into the inner area of the Contact pieces.
  • the electrically insulating material causes the arc in the area of the electrically insulating material not to match the metal of the Contact pieces comes into contact, and the arc is drawn in particular behind the area of the electrically insulating material.
  • the contact points of the arc with the contact pieces are z. B. moved away from the opposite ends of the contact pieces behind the area with electrically insulating material.
  • the arc cannot therefore be shortened.
  • the arc arc voltage is increased and the arc is quickly and easily extinguished or blown out by the switching gas flow.
  • the electrically insulating material can be in the form of a coating of the inner wall of the at least one first and / or the at least one second fixed contact piece.
  • a coating is simple and inexpensive, particularly in a form-fitting manner, and the arc is reliably kept away from the contact pieces in the coated area of the contact pieces.
  • the electrically insulating material can be arranged in the form of at least one hollow tubular sleeve in and / or on the at least one first and / or in and / or on the at least one second fixed contact piece.
  • a hollow tubular sleeve made of electrically insulating material is simple and inexpensive to manufacture and reliably shields the contact pieces from the arc analogously to a coating with electrically insulating material.
  • the electrically insulating material can be inserted in the form of at least one hollow tubular sleeve in the at least one first and / or in the at least one second fixed contact piece, in particular in a form-fitting manner in contact with the inside of the at least one first and / or the at least one second fixed contact piece .
  • the electrically insulating material can protrude in the form of at least one hollow tubular sleeve from the interior of the at least one first and / or the at least one second fixed contact piece, in particular protrude at least a few centimeters.
  • the arcing contact points with the contact pieces for. B. can be arranged in the region of the opposite ends of the contact pieces.
  • the opposite ends of the contact pieces are e.g. B. nozzle-shaped, in particular from a burn-resistant Ma material.
  • the electrically insulating material can be arranged in the form of at least one hollow tubular sleeve at one end of the at least one first and / or at least one second fixed contact piece, in particular plugged on, screwed, glued and / or welded, the hollow tubular sleeve for Flow through with a switching gas stream in particular the hollow tubular at least one first and / or the at least one second fixed contact piece extended.
  • a switching gas stream in particular the hollow tubular at least one first and / or the at least one second fixed contact piece extended.
  • the switching gas flow only rips at the end of the hollow tubular sleeve, which can prevent the arc from touching the arc with the contact pieces in the sleeve and a shortening of the arc, even with an uncontrolled burning arc, with the advantages described above.
  • the electrically insulating material can comprise or be a polymer, in particular special Teflon, PTFE and / or PCTFE. These materials are inexpensive, stable against the arc, in particular against burning by the arc, electrically non-conductive, and can be evaporated by lo- kale heating increase the switching gas flow and / or favor extinguishing the arc.
  • a switching gas stream can comprise a switching gas with or from SF 6 and / or clean air. These switching gases are well suited to extinguishing an arc and / or are well electrically insulating.
  • the contact pieces can be made of a metal, in particular copper, aluminum and / or steel and / or comprise copper, aluminum and / or steel.
  • the metals are good electrical conductors and lead to low electrical losses in a closed current path when current flows.
  • the at least one first and / or the at least one second fixed contact piece can comprise an end made of erosion-resistant carbon material, in particular two opposite, spaced ends, each with one end of the at least one first fixed contact piece and one end of the at least one second fixed contact piece Contact piece made of erosion-proof carbon. This allows the stability and durability of the con tact pieces to be increased.
  • the contact piece or pieces can have a nozzle shape in order to generate a switching gas flow in the contact pieces with defined properties, which is particularly well suited to extinguishing the arc.
  • the hollow tubular contact pieces can be made cylindrical, with a circular cylindrical continuous cavity inside.
  • the electrically insulating material can each be cylindrical, with a circular cylindrical cavity inside.
  • the switching gas flow can be conducted inside the contact pieces and / or inside the electrically insulating material, especially in the form of a laminar flow.
  • the contact can be arranged in an insulator, in particular in a gas-tight insulator made of silicone, ceramic and / or a composite material, in particular filled with switching gas and / or with ribs running around an outer circumference.
  • the isolator isolates the contact from the environment and isolates different electrical connections from each other.
  • the gas-tight housing shape of the insulator enables the use of switching gases such as. B. Clean Air, ie purified air, or SF 6 . This can be a
  • a method for switching with a double nozzle switch comprises opening at least one electrical contact to interrupt a current path, with at least one first movable bridging contact piece being moved around the current path between at least a first and at least one Interrupt second fixed contact piece of the at least one electrical contact, and wherein an arc arises between the at least one first and the at least one second fixed contact piece, with an increased operating voltage of the arc by a switching gas flow and by electrically insulating material in and / or at least one first and / or in and / or on at least one second fixed contact piece.
  • the switching gas flow can flow through at least one hollow cylindrical through opening through the at least one first and / or through the at least one second fixed contact piece, and the electrically insulating material can extend the path of the arc between the contact pieces, in particular in connection with the switching gas flow, in particular through a coating of at least one contact piece in the interior with electrically insulating material and / or by at least one hollow tubular sleeve made of electrically insulating the material, which is arranged in particular at one end of a respective contact piece on the contact piece as an extension of the contact piece and / or is arranged in the hollow tube-shaped contact piece, in particular is inserted.
  • FIGS. 2 to 4 are shown schematically in exemplary embodiments of the invention in FIG. 1 and described in more detail below.
  • Figure 1 shows schematically in sectional view along a longitudinal axis a double nozzle switch 1 according to the prior art when switching off, with a first and a second fixed contact piece 4, 5, in which an arc burns, and with a movable bridging contact piece 6, and
  • FIG. 2 shows schematically a double nozzle switch 1 analogous to that
  • Double nozzle switch 1 of Figure 1 wherein according to the invention electrically insulating material 11 is arranged in the fixed contact pieces 4, 5, and
  • FIG. 3 schematically shows a double nozzle switch 1 according to the invention analogous to the double nozzle switch 1 of FIG. 2, with electrically insulating material 11 is arranged as a hollow tubular sleeve 13 on a fixed con tact pieces 4, and
  • Figure 4 schematically shows a double nozzle according to the invention
  • switch 1 analogous to the double nozzle switch 1 of the Fi gur 2, wherein electrically insulating material 11 is arranged as a hollow tubular sleeve 13 in a fixed con tact pieces 4.
  • a double nozzle switch 1 according to the prior art is shown schematically in a sectional view along a longitudinal axis when switching off.
  • the double nozzle switch 1 comprises a first and a second fixed contact piece 4, 5 and a movable bridging contact piece 6.
  • the fixed contact pieces 4, 5 are spaced apart along the longitudinal axis, each with opposite ends 14, 14 'in the form of nozzles, and that Matterbrückungskon contact piece 6 is designed to mechanically and electrically connect the fixed contact pieces 4, 5.
  • the con tact pieces 4, 5, 6 are circular cylindrical inside hollow, tubular.
  • the bridging contact piece 6 is mounted on the outer circumference of a fixed contact piece 5 movably ent along the longitudinal axis.
  • the bridging contact piece 6 is arranged completely on one side of a fixed contact piece 5, the fixed contact piece 5 being at least partially spatially encompassed by the bridging contact piece 6.
  • the bridging contact piece 6 is also in mechanical and electrical contact with the second fixed contact piece 5, wherein the bridging contact There is an electrical contact between the contact piece 6 between the fixed contact pieces 4, 5.
  • the bridging contact piece 6 When switching off, the bridging contact piece 6 is moved back in the direction of the second fixed contact piece 5 until the mechanical and electrical contact between the first fixed contact piece 4 and the bridging contact piece 6 is eliminated, in particular until the bridging contact piece 6 is completely on the side of the second contact piece 5 is arranged.
  • an applied high voltage in particular in the range of up to 1200 kV between the fixed contact pieces 4, 5 arises or ignites when switched off an arc 17 between the contact pieces 4, 6.
  • the Lichtbo gene 17 ignites between the fixed contact piece 4 and the bridging contact piece 6 during the movement of the bridging contact piece 6 and is stripped or transferred from the bridging contact piece 6 to the fixed contact piece 5.
  • the arc 17 burns, i.e. H. forms a plasma, in the further course of time, in particular in the interior of the hollow tubular contact pieces 4, 5.
  • the contact pieces 4, 5, 6 are arranged in a gas-tight housing which comprises an insulator 2.
  • the insulator 2 is hollow tubular or circular cylindrical, with a circular base and top surface, on which z. B. At connections or external terminal lugs for the high voltage are arranged to connect the double nozzle switch 1 with electrical lines, consumers and / or power generators.
  • the insulator 2 comprises z. B. circular around the circumferential brim or ribs 16, z. B. arranged at regular intervals from one another along the longitudinal axis, which extend a leakage current path along the longitudinal axis.
  • the insulator 1 is e.g. B. made of ceramic, silicone and / or a composite material.
  • the housing or the isolator 2 is filled with a switching or insulating gas, in particular special SF 6 and / or clean air. The switching gas insulates electrical and enables the blowing or blowing out of an arc when switching.
  • a switching gas flow for blowing or blowing the arc is generated in particular by a compression device 7.
  • the compression device 7 comprises a stationary compression piston 8, a movable compression cylinder 9 with a base 10, which is movable together with the compression cylinder 9 along the longitudinal axis of the double nozzle switch 1.
  • the base 10 is designed to spatially encompass the first contact piece 4 in particular on the outer circumference, in particular gas-tight, and to slide along the contact piece 4 along the circumference of the contact piece 4 during a switching movement.
  • the bottom 10 in connection with the compression cylinder 9 are moved together with a switching movement, in particular with the bridging contact piece 6, via elements of a kinematic chain such as.
  • a drive in particular a spring-loaded drive, gear parts and / or egg ner drive rod, which for the sake of simplicity are not shown in the figures.
  • the contact points of the arc migrate during the shift into the hollow tubular contact pieces 4 and 5 along the inner wall of the contact pieces 4 and 5, which z. B. are made of a highly conductive metal, especially copper, aluminum and / or steel.
  • edges of the inner wall of the contact pieces 4 and 5 form peaks in the electrical field or local voltage peaks, which can lead to a fixation of the contact points of the arc at the edges.
  • the switching gas flow decreases with time or with a progressive switching movement, the arc shortening. This reduces the burning voltage and prevents or hinders the arc from extinguishing.
  • FIG. 2 a double nozzle switch 1 is shown schematically analogous to the double nozzle switch 1 of Figure 1, wherein according to the invention electrically insulating material 11 is arranged in the fixed contact pieces 4 and / or 5.
  • the construction and switch-off process of the double nozzle switch 1 in FIG. 2 is analogous to the switch-off process of the double nozzle switch 1 of FIG. 1 described above, with the electrically insulating material 11 preventing or obstructing a shortening of the arc, in particular when the switching gas flow decreases.
  • a high arc arc voltage is maintained, especially when the switching gas flow decreases, and a rapid extinction of the arc is supported or promoted.
  • the electrically insulating material 11 is, for. B. in the form of egg ner coating of the inner surface of the or the Needlesstü piece 4, 5 executed.
  • the electrically insulating material 11 comprises or consists, for. B. from Teflon, PCTFE and / or a plastic.
  • electrically insulating material 11 can, for. B. evaporate and thereby help extinguish the arc.
  • the so-called hard gas effect in which electrically insulating material 11 evaporates and thus produces with additional gas, can help stabilize the arc shape and support a rapid extinguishing of the arc by maintaining a high operating voltage.
  • the coating of the inner surface of the contact piece (s) 4, 5 can be carried out completely or only in areas inside the contact pieces 4, 5.
  • the electrically insulating material 11 is in the form of a z. B. cylindrical hollow tube in the inner cavity of the contact pieces 4, 5 z. B. positively arranged with the inner wall of the contact pieces 4, 5, in particular inserted and / or inserted.
  • the electrically insulating material 11 can support the formation of a loop shape of the arc, in that contact points of the arc with the contact pieces 4, 5 are not formed in the region of the electrically insulating material 11.
  • the arc can preferably form at the edges and / or in the region of the ends 14, 14 'of the contact pieces 4, 5 contact points without wandering the contact points along the inner wall of the contact pieces 4, 5 in the direction of the switching gas flow direction, thereby creating a loop formation or prolongation of the arc is effected or supported un, with associated increase in the operating voltage, see z. B. on the right side of Figure 2.
  • FIG. 2 An alternative effect of the electrically insulating material 11 is shown on the left-hand side of FIG. 2, which enables a stable, high operating voltage, in particular even when the switching gas flow decreases.
  • contact points of the arc with the electrically conductive contact pieces 4, 5 are prevented.
  • the arc is drawn by the switching gas flow from the ends 14, 14 'of the contact pieces 4, 5 away, on the opposite side of the contact pieces 4, 5 through the cavity in the contact pieces 4, 5, where behind the electrical insulating material 11th , in areas of the contact pieces 4, 5 without electrically insulating material 11, contact points z.
  • B. preferably form or fix on edges. If the switching gas flow decreases, the
  • Arc through the electrically insulating material 11 prevents ver, since the contact points do not migrate or migrate back along the inner wall of the contact pieces 4, 5 with electrically insulating material 11 in the direction of ends 14, 14 '.
  • FIG. 3 schematically shows an alternative embodiment of the double nozzle switch 1 according to the invention with electrically insulating material 11, 12, 13.
  • the double nozzle switch 1 according to the invention is designed analogously to the double nozzle switch 1 of FIG. 2, with additionally electrically insulating material 11 in the form of a hollow tubular sleeve 13 being arranged at one end of a fixed contact piece 4 as an example.
  • a coating 12 with or on the use of a sleeve 13 made of electrically insulating material 11 in a cavity inside the fixed contact pieces 4, 5 can be dispensed with when using a hollow tubular sleeve 13 on at least one end of a fixed contact piece 4 and / or 5th
  • the hollow tubular sleeve 13 at one end of the fixed contact piece 4 extends the particularly cylindrical cavity inside the contact piece 4.
  • a switching gas flow does not tear off in an uncontrolled manner, which could lead to a shortening of the arc .
  • the hollow tubular sleeve 13 leads to an extension, in particular a uniform switching gas flow and thus to an extension of the arc 17.
  • the hollow tubular sleeve 13 is made of an electrically insulating material 11, as a result of which no common contact points of the arc 17 with the hollow tubular sleeve 13 are formed.
  • the arc is extended in the form of a loop in the hollow tubular sleeve 13, with the advantages described above.
  • the hollow tubular sleeve 13 is, for. B. at the end of the particular cylindrical cavity inside the contact piece 4 and / or attached z. B. by gluing, clamping, screw, solder and / or weld connection.
  • a hollow tubular sleeve 13 can be made from a electrically insulating material 11 to be arranged at one end of the second fixed contact piece 5 for extending the zy-cylindrical cavity in particular inside the contact piece 5.
  • FIG. 4 schematically shows an alternative embodiment of the double nozzle switch 1 according to the invention with electrically insulating material 11, 13.
  • the inventive double nozzle switch 1 is designed analogously to the double nozzle switch 1 of Figure 3, wherein the hollow tubular sleeve 13 is inserted instead of at one end of the fixed contact piece 4 in the particular cylindrical cavity inside the contact piece 4.
  • the hollow tubular sleeve 13 in FIG. 4 projects beyond the, in particular, cylindrical cavity inside the contact piece 4, with the advantages associated therewith.
  • the effect is analogous to the effect of the hollow tubular sleeve 13 in FIG. 3 in conjunction with the coating of the interior of the in particular cylindrical cavity in the interior of the contact piece 4 with insulating material 11.
  • the manufacture of the double nozzle switch 1 with, in particular, inserted hollow tubular sleeve 13 is simpler and less expensive than the coating of the interior of the particular cylindrical cavity inside the contact piece 4 with insulating material 11 and the arrangement of a hollow tubular sleeve 13 at the end of the particularly cylindrical cavity.
  • the hollow tubular sleeve 13 made of electrically insulating material 11 can be inserted into the, in particular, cylindrical cavity inside the second contact piece 5.
  • the hollow tubular sleeve 13 can protrude beyond the in particular cylindrical cavity inside the contact piece 4 or end at the end of the cavity inside the contact piece 4.
  • sleeves 13 of different lengths in and / or on the first and / or second fixed contact piece 4, 5 can be used.
  • the sleeves 13 made of electrically insulating material 11 can in particular be positively arranged in the particularly cylindrical cavity in the interior of the respective contact piece 4, 5, for. B. inserted, screwed, glued and / or pressed.
  • the in particular cylindrical cavity in the interior of the respective contact piece 4, 5 can be coated 12 with electrically insulating material 11.
  • a hollow tubular sleeve 13 can be attached and / or fixed at the end of the fixed contact piece 4, 5, in particular the opposite end to the end 14 or 14 ', or end, with inserted sleeves 13, or protrude from the end.

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Abstract

L'invention concerne un commutateur à double buse et un procédé pour la commutation de courants élevés dans la technique haute tension, comportant au moins un contact électrique (3) comprenant au moins une première et au moins une deuxième pièce de contact fixe (4, 5) et au moins une première pièce de contact de pontage mobile (6). Les pièces de contact (4, 6) sont en forme de tube creux, pour l'écoulement d'un flux de gaz de commutation. Le matériau électriquement isolant (11) est disposé dans et/ou sur au moins une première et/ou dans et/ou sur au moins une deuxième pièce de contact fixe (4, 1).
PCT/EP2019/082175 2018-12-21 2019-11-22 Commutateur à double buse et procédé de commutation de courants élevés dans la technique haute tension WO2020126303A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018222782.9 2018-12-21
DE102018222782.9A DE102018222782A1 (de) 2018-12-21 2018-12-21 Doppeldüsenschalter und Verfahren zum Schalten hoher Ströme in der Hochspannungstechnik

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Publication Number Publication Date
WO2020126303A1 true WO2020126303A1 (fr) 2020-06-25

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Application Number Title Priority Date Filing Date
PCT/EP2019/082175 WO2020126303A1 (fr) 2018-12-21 2019-11-22 Commutateur à double buse et procédé de commutation de courants élevés dans la technique haute tension

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WO (1) WO2020126303A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7207479U (de) * 1972-02-28 1972-09-28 Siemens Ag Anordnung zur Unterbrechung eines Lichtbogens
US4181837A (en) * 1976-09-15 1980-01-01 Westinghouse Electric Corp. Compressed-gas circuit interrupter having insulated contacts
EP0024252A1 (fr) 1979-08-21 1981-02-25 Siemens Aktiengesellschaft Disjoncteur haute tension à résistance et point de coupure auxiliaire
WO2018192732A1 (fr) * 2017-04-21 2018-10-25 Siemens Aktiengesellschaft Commutateur à double buse comprenant un contact extérieur et procédé servant à commuter le commutateur à double buse

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835274A (en) * 1972-06-20 1974-09-10 Siemens Ag Contact system for a high-voltage circuit breaker
DE2234067C3 (de) * 1972-07-07 1982-06-16 Siemens AG, 1000 Berlin und 8000 München Kontaktsystem für druckgasisolierte Hochspannungsschaltgeräte
IT1047627B (it) * 1974-10-01 1980-10-20 Reyrolle Parsons Ltd Perfezionamento negli interrutto ri per alte tensioni

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7207479U (de) * 1972-02-28 1972-09-28 Siemens Ag Anordnung zur Unterbrechung eines Lichtbogens
US4181837A (en) * 1976-09-15 1980-01-01 Westinghouse Electric Corp. Compressed-gas circuit interrupter having insulated contacts
EP0024252A1 (fr) 1979-08-21 1981-02-25 Siemens Aktiengesellschaft Disjoncteur haute tension à résistance et point de coupure auxiliaire
WO2018192732A1 (fr) * 2017-04-21 2018-10-25 Siemens Aktiengesellschaft Commutateur à double buse comprenant un contact extérieur et procédé servant à commuter le commutateur à double buse

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