EP0766278A2 - Disjoncteur - Google Patents

Disjoncteur Download PDF

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Publication number
EP0766278A2
EP0766278A2 EP96810568A EP96810568A EP0766278A2 EP 0766278 A2 EP0766278 A2 EP 0766278A2 EP 96810568 A EP96810568 A EP 96810568A EP 96810568 A EP96810568 A EP 96810568A EP 0766278 A2 EP0766278 A2 EP 0766278A2
Authority
EP
European Patent Office
Prior art keywords
volume
auxiliary piston
circuit breaker
compression volume
piston
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.)
Withdrawn
Application number
EP96810568A
Other languages
German (de)
English (en)
Other versions
EP0766278A3 (fr
Inventor
Ernst Berger
Christian Lindner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Hochspannungstechnik AG
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP0766278A2 publication Critical patent/EP0766278A2/fr
Publication of EP0766278A3 publication Critical patent/EP0766278A3/fr
Withdrawn legal-status Critical Current

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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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/905—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the compression volume being formed by a movable cylinder and a semi-mobile piston
    • 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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/904—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism characterised by the transmission between operating mechanism and piston or movable contact
    • 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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H2033/907—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism using tandem pistons, e.g. several compression volumes being modified in conjunction or sequential

Definitions

  • the invention is based on a circuit breaker according to the preamble of claim 1.
  • a circuit breaker filled with SF 6 gas is known from patent specification EP 0 374 384 B1.
  • the quenching gas required for blowing the arc is generated on the one hand by the arc itself and on the other hand by a piston-cylinder arrangement.
  • the piston-cylinder arrangement has a fixed piston.
  • the pressure generated by compression in this piston-cylinder arrangement increases approximately in proportion to the stroke of the moving cylinder if no pressure flows out of the piston-cylinder arrangement during the compression period.
  • the invention solves the problem of creating a circuit breaker in which the blowing of the arc with clean SF 6 gas is reinforced with simple means.
  • the breaking power is advantageously increased by the increased blowing of the arc.
  • the breaking capacity of the circuit breaker is also significantly improved in the area of comparatively small currents.
  • a larger amount of clean SF 6 gas is available for blowing the arc than in conventional circuit breakers, which results in a significant increase in the breaking capacity, and the effort for this improvement is comparatively low.
  • the circuit breaker can be used in any position, i.e. it can be used advantageously for all possible outdoor applications as well as in metal-encapsulated gas-insulated high-voltage systems.
  • the quenching chamber 1 shows a partial section through a quenching chamber 1 of a circuit breaker, the quenching chamber 1 being shown in the switched-on state in the left half of FIG. 1 and in the switched-off state in the right half.
  • the quenching chamber 1 is essentially rotationally symmetrical, it has a central axis 1a.
  • the quenching chamber 1 is enclosed here by an insulating housing 2.
  • the insulating housing 2 is closed at both ends by metallic connecting flanges, also not shown.
  • the insulating housing 2 encloses an arcing chamber volume 3 which is filled with SF 6 gas under pressure, for example at 6 bar. If the circuit breaker is used in a metal-encapsulated gas-insulated high-voltage system, the insulating housing 2 may be dispensed with, in which case the metallic encapsulation could limit the quenching chamber volume 3.
  • the arcing chamber 1 has an electrically conductive fixed contact 4 and an electrically conductive movable contact 5. With certain Circuit breaker types, however, it is possible that the contact 4 is also designed to be movable.
  • the movable contact 5 is provided at the end facing the fixed contact 4 with contact elements 6 which resiliently rest on the fixed contact 4 when the arcing chamber 1 is closed.
  • the movable contact 5 has a cylindrically shaped metallic shaft 7 which extends in the opposite direction to the fixed contact 4.
  • the shaft 7 has a cylindrical discharge channel 8 on the inside.
  • the movable contact 5 makes a stroke H 1 during a switching movement.
  • an annular blow volume 9 is rigidly attached to the outside.
  • the blowing volume 9 is enclosed by an outer wall 10, into which an insulating nozzle 11 is let in on the side facing the fixed contact 4. On the side of the blowing volume 9 facing away from the fixed contact 4, it is closed off by a base 12 connected to the outer wall 10 and to the shaft 7 in a pressure-tight manner.
  • the bottom 12 is provided with a valve.
  • This valve is shown schematically here through openings 13 which are closed by a valve disk 14 in the event of overpressure in the blowing volume 9.
  • the stroke of the valve disk 14 is limited in the axial direction by a stop 15 attached to the shaft 7.
  • At least one flow channel 16 is let into the insulating nozzle 11 and, when switched off, connects the blowing volume 9 with an extinguishing zone 17, in which the arc then burns.
  • the outer wall 10 forms, together with the bottom 12 of the blow volume 9, a piston 18 which slides in a compression cylinder 19.
  • the compression cylinder 19 is rigidly fastened in the arcing chamber 1, it is closed off on the side opposite the fixed contact 4 by a cylinder base 20.
  • the cylinder base 20 is penetrated in the center by the shaft 7 of the movable Contact 5, wherein this penetration is made pressure-tight in one of the known ways.
  • a first compression volume 21 adjoins the base 12.
  • the valve built into the base 12 allows gas to flow from the first compression volume 21 into the blow volume 9 when the pressure in the blow volume 9 is higher than that in the first compression volume 21.
  • the first compression volume 21 is on the side opposite the base 12 by a Auxiliary piston 22 limited.
  • a second compression volume 23 is located between the auxiliary piston 22 and the cylinder base 20.
  • the auxiliary piston 22 slides, secured against jamming, both in the compression cylinder 19 and on the shaft 7 of the movable contact 5, these sliding points being pressure-tight in one of the known ways are.
  • the auxiliary piston 22 is provided with a further valve, which optionally allows a gas flow from the second compression volume 23 into the first compression volume 21.
  • This valve is shown schematically here through openings 24 which can be covered by means of a valve disk 25. The stroke of the valve disk 25 in the axial direction is limited by a stop, not shown.
  • the cylinder base 20 also has a valve, which is represented schematically by openings 26 which connect the second compression volume 23 to the arcing chamber volume 3.
  • the openings 26 are covered by a valve disk 27 when the pressure in the second compression volume 23 is greater than the pressure in the quenching chamber volume 3.
  • the stroke of this valve disk 27 in the axial direction is likewise limited by a stop (not shown).
  • the auxiliary piston 22 is, as is indicated schematically by a line of action 28, connected to a first leg 29 of an angle lever 30.
  • the angle lever 30 is part of a deflection 31 which connects the auxiliary piston 22 to the shaft 7.
  • the angle lever 30 is rotatably mounted on a bearing pin 32.
  • the bearing pin 32 is rigidly fixed in the arcing chamber 1.
  • the shaft 7, as indicated schematically by an action line 33, is connected to a second leg 34 of the angle lever 30.
  • FIG. 2 shows a partial section through a quenching chamber 1 of a circuit breaker, the quenching chamber 1 being shown in the switched-on state in the left half of FIG. 2, and in the right half at the moment of contact separation in the right half.
  • the deflection 31 is designed in this embodiment such that the auxiliary piston 22 moves by the stroke H 2 in the direction of the fixed contact 4. Other strokes are also possible, with the aid of different leg lengths for the angle lever 30, the movement of the auxiliary piston 22 can be optimized for the respective circuit breaker type.
  • the angle formed by the two legs 29 and 34 with one another can also be modified in order to optimize the movement of the auxiliary piston 22.
  • the auxiliary piston 22 With this stroke H 2, the auxiliary piston 22 has compressed the SF 6 gas in the first compression volume 21.
  • the volume 35 shown in dotted lines represents the amount of gas before compression, which corresponds to the amount of SF 6 gas additionally compressed by the auxiliary piston 22 in the first compression volume 21.
  • SF 6 gas is fed upwards from the quenching chamber volume 3 into the second compression volume 23 through the openings 26, so that no pressure difference can form between the latter and the quenching chamber volume 3.
  • the angle lever 30 is rotatably mounted on the fixed bearing pin 32.
  • two angle levers 30 are provided, to each of which a piston rod 36 is articulated. These piston rods 36 are connected in an articulated manner to the auxiliary piston 22 at their other end, which is not visible here.
  • the piston rods 36 are arranged in the area next to the shaft 7.
  • the piston rods 36 each have a longitudinal axis 37, these longitudinal axes 37 lie in one plane.
  • the central axis 1a is usually not in this plane.
  • the piston rods 36 are each articulated on the first leg 29 of the angle lever 30.
  • a bolt 38 which has a collar 39 on one side and a snap ring 40 as a securing means on the other side, rotatably connects each of the piston rods 36 to the first leg 29 of the angle lever 30.
  • a bolt 41 rotatably connects a rod 42 to the respective second leg 34 of the two angle levers 30.
  • This bolt connection is configured similarly to the connection described in the previous paragraph.
  • the other ends of the rods 42 are each articulated on one side of the shaft 7.
  • the rods 42 are arranged on both sides of the shaft 7.
  • a bolt 43 penetrates the shaft 7 and the other ends of the rods 42.
  • the bolt 43 has a collar 44 on one side and a snap ring 45 on the other side as a securing means.
  • the ends of the rods 42 penetrated by the bolt 43 run directly in the area in addition to the shaft 7, while the piston rods 36 have a somewhat greater distance from the shaft 7 due to the offset of the first legs 29 of the angle lever 30.
  • the partial sections shown in Figure 4 are not in the same planes.
  • FIG. 5 shows a further schematic illustration of the deflection 31 shown in FIG. 3 at the moment of the contact separation of the extinguishing chamber 1.
  • the bolt 43 has moved along with the shaft 7 moved downward and has taken the rods 42 with it.
  • the angle levers 30, actuated by the rods 42, have rotated clockwise around the bearing pin 32.
  • the piston rods 36 have consequently been moved upward, and with them the auxiliary piston 22, which is now in the uppermost position shown in the right half of FIG. If the shaft 7 moves further downward in the course of the switch-off movement, the angle levers 30 are now moved further counterclockwise via the rods 42. The result of this is that the auxiliary piston 22 is likewise moved downward again via the piston rods 36.
  • the path s of the auxiliary piston 22 shows the path s of the auxiliary piston 22 as a function of the stroke H 1 of the arcing chamber 1. Furthermore, the idealized course of the pressure P 1 in the blow volume 9 as a function of the stroke H 1 of the arcing chamber 1 of the circuit breaker is shown. In the present exemplary embodiment, the pressure P 1 in the blowing volume 9 already reaches its maximum value at Reaching half the stroke of the extinguishing chamber 1 when the auxiliary piston 22 has reached its uppermost position, and remains at this maximum value, provided that there is no outflow from the blowing volume 9 and that any leaks that are always present can be neglected.
  • the pressure curve P 2 is achieved in a circuit breaker with a conventional piston-cylinder arrangement without the additional auxiliary piston 22.
  • the hatched area between the pressure curves P 1 and P 2 clearly shows that in the circuit breaker according to the present exemplary embodiment in the blow volume 9 and in the first Compression volume 21 stores a considerably larger amount of clean SF 6 gas under pressure for blowing the arc.
  • the auxiliary piston 22 also pumps the SF 6 gas corresponding to the volume 35 into the first compression volume 21 and into the blowing volume 9.
  • the pressure P 1 builds up in the first compression volume 21, as shown in FIG.
  • the blowing volume 9 is in this movement phase through the openings 13 with the first compression volume 21 connected so that the same pressure P 1 prevails in both volumes.
  • the openings 24 are closed by the valve disk 25, but clean SF 6 gas flows through the openings 26 from the quenching chamber volume 3 into the second compression volume 23 during this movement phase.
  • the auxiliary piston 22 When the auxiliary piston 22 has reached its uppermost position, the pressure increase due to the mechanical compression in the first compression volume 21 and thus also in the blowing volume 9 has ended, furthermore the second compression volume 23 is filled again with SF 6 gas, which has the same pressure as it in the quench chamber volume 3.
  • the contact separation takes place, and the auxiliary piston 22 simultaneously reverses its direction of movement.
  • an arc arises immediately in the extinguishing zone 17.
  • the blowing of the arc proceeds differently with this circuit breaker.
  • a low-current arc does not heat the extinguishing zone 17 to any appreciable extent, ie the pressure of the SF 6 gas located in the extinguishing zone 17 is only slightly increased by a low-current arc, so that there is a pressure gradient between the blowing volume 9 and the extinguishing zone 17. Because of this pressure drop, intensive blowing of the arc begins immediately after the contact separation.
  • the clean SF 6 gas stored under pressure in the blowing volume 9 and in the first compression volume 21 flows through the flow channels 16 into the quenching zone 17 and cools the arc there.
  • the SF 6 gas then flows through the outflow channel 8 and through the insulating nozzle 11 from in the direction of the extinguishing chamber volume 3.
  • This outflow would cause a pressure drop in the blowing volume 9 and in the first compression volume 21 if the piston 18 did not further compress the SF 6 gas in the first compression volume 21 in the course of its further switching-off movement and would thus compensate for the pressure drop.
  • a pressure increase occurs in the second compression volume 23, which has the consequence that the openings 26 are closed by the valve disk 27.
  • the pressure in the second compression volume 23 continues to increase until a pressure equalization then takes place between the first compression volume 21 and the second compression volume 23, ie until the maximum value of the pressure P 1 also prevails in the second compression volume 23.
  • the piston 18 then acts on both the first compression volume 21 and the second compression volume 23 until the end of the switch-off movement.
  • the hot SF 6 gas mixes in the blowing volume 9 with the stored cold SF 6 gas and is thereby cooled somewhat. Clean SF 6 gas is maintained under pressure in the first compression volume 21, this pressure under the Influence of the piston 18, which continues to move in the switch-off direction, rises slightly above the maximum value of P 1 indicated in FIG.
  • the valve disk 14 opens the openings 13, and the clean cold gas stored in the first compression volume 21 and in the second compression volume 23 flows through the flow channels 16 into the extinguishing zone 17 and supports there the blowing of the arc. If the switch-off is successful, the arc extinguishes at zero current. The inflowing clean cold gas improves the dielectric strength of the extinguishing zone 17, so that a re-ignition of the arc after it has been extinguished is reliably avoided.
  • the arcing chamber 1 can now withstand the increase in the recurring voltage that occurs between the fixed contact 4 and the movable contact 5.
  • a pressure relief valve can be installed in the base 12 which, if a predetermined limit value of the Pressure responds and allows the pressure to escape into the first compression volume 21.
  • the pressure relief valve can also be installed in the outer wall 10 of the blowing volume 9, specifically in an area that cannot be covered by the compression cylinder 19, so that the excess pressure can be reduced into the arcing chamber volume 3 if necessary.
  • a pressure relief valve can be installed in the auxiliary piston 22 which, when a predetermined pressure is exceeded in the first compression volume 21, breaks it down into the second compression volume 23.
  • an overpressure valve can also be installed in the cylinder base 20, which reduces a predetermined overpressure in the second compression volume 23 into the quenching chamber volume 3.
  • the auxiliary piston 22 When the extinguishing chamber 1 is switched on, the auxiliary piston 22 likewise generates an overpressure in the first compression volume 21 and in the blowing volume 9, so that the extinguishing zone 17 is blown with fresh SF 6 gas before contact.
  • the result of this blowing is that the pre-ignition arc that occurs when switching on occurs somewhat late.
  • this effect has an advantageous effect in OCO switching cycles, since any conductive particles remaining in the extinguishing zone 17 from the previous switch-off are then blown out of this area during the switch-on, so that they do not have a dielectric interference effect when the switch-off immediately follows the switch-on can kick.

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  • Circuit Breakers (AREA)
EP96810568A 1995-09-30 1996-08-28 Disjoncteur Withdrawn EP0766278A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19536673A DE19536673A1 (de) 1995-09-30 1995-09-30 Leistungsschalter
DE19536673 1995-09-30

Publications (2)

Publication Number Publication Date
EP0766278A2 true EP0766278A2 (fr) 1997-04-02
EP0766278A3 EP0766278A3 (fr) 1998-11-04

Family

ID=7773817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810568A Withdrawn EP0766278A3 (fr) 1995-09-30 1996-08-28 Disjoncteur

Country Status (3)

Country Link
US (1) US5898149A (fr)
EP (1) EP0766278A3 (fr)
DE (1) DE19536673A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999012177A1 (fr) * 1997-08-18 1999-03-11 Siemens Aktiengesellschaft Interrupteur electrique haute tension
EP2343721A1 (fr) * 2010-01-06 2011-07-13 ABB Research Ltd. Commutateur à haute tension isolé du gaz
WO2020011695A1 (fr) * 2018-07-12 2020-01-16 Siemens Aktiengesellschaft Commutateur à isolation gazeuse

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19629475A1 (de) * 1996-07-10 1998-01-15 Siemens Ag Druckgasleistungsschalter
ATE518289T1 (de) * 2001-10-29 2011-08-15 Abb Research Ltd Gis-stützisolator mit integrierter barriere
FR2837321B1 (fr) * 2002-03-18 2004-08-06 Alstom Disjoncteur haute tension comprenant un clapet de decompression
JP2006164673A (ja) * 2004-12-06 2006-06-22 Hitachi Ltd パッファ形ガス遮断器の電流遮断方法およびそれに用いるパッファ形ガス遮断器
US20070241079A1 (en) * 2006-04-13 2007-10-18 Johnson David S High voltage circuit breaker with re-fill valve
DE102009057703A1 (de) * 2009-12-04 2011-06-09 Siemens Aktiengesellschaft Leistungsschalteranordnung
EP2816581A1 (fr) 2013-06-19 2014-12-24 ABB Technology AG Disjoncteur haute tension isolé au gaz
EP2887367A1 (fr) 2013-12-19 2015-06-24 ABB Technology AB Disjoncteur haute tension isolé au gaz
JP6818604B2 (ja) * 2017-03-24 2021-01-20 株式会社日立製作所 ガス遮断器
EP3404689B1 (fr) * 2017-05-19 2023-08-16 General Electric Technology GmbH Disjoncteur comprenant une chambre de compression améliorée
EP3419039B1 (fr) * 2017-06-20 2020-08-26 General Electric Technology GmbH Disjoncteur haute tension
EP3503152B1 (fr) * 2017-12-22 2020-10-14 ABB Power Grids Switzerland AG Disjoncteur haute ou moyenne tension isolé au gaz
EP3503153B1 (fr) 2017-12-22 2021-09-01 ABB Power Grids Switzerland AG Disjoncteur haute ou moyenne tension isolé au gaz
WO2020188754A1 (fr) * 2019-03-19 2020-09-24 株式会社 東芝 Disjoncteur à gaz

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458120A (en) * 1981-07-14 1984-07-03 Bbc Brown, Boveri & Company, Limited High-voltage circuit breaker
EP0374384A2 (fr) * 1988-12-23 1990-06-27 Licentia Patent-Verwaltungs-GmbH Interrupteur monopression à SF6
DE9308586U1 (de) * 1993-06-04 1993-11-04 Siemens AG, 80333 München Elektrischer Hochspannungsleistungsschalter
EP0664552A1 (fr) * 1994-01-25 1995-07-26 Gec Alsthom T & D Sa Disjoncteur à auto-soufflage et à double mouvement

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CH630744A5 (de) * 1978-09-06 1982-06-30 Sprecher & Schuh Ag Druckgasschalter.
DE3124075A1 (de) * 1981-03-30 1982-09-16 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Hochspannungsschaltkammer
CH658745A5 (de) * 1982-10-25 1986-11-28 Sprecher & Schuh Ag Druckgasschalter.
DE3440857A1 (de) * 1984-11-08 1986-05-15 Siemens AG, 1000 Berlin und 8000 München Druckgasschalter
DE4025553C2 (de) * 1990-08-11 1994-03-10 Licentia Gmbh Druckgasschalter
DE4211159A1 (de) * 1992-03-31 1993-10-07 Siemens Ag Elektrischer Hochspannungs-Leistungsschalter
US5478980A (en) * 1994-04-05 1995-12-26 Abb Power T&D Company, Inc. Compact low force dead tank circuit breaker interrupter
FR2720188B1 (fr) * 1994-05-19 1996-06-14 Gec Alsthom T & D Sa Disjoncteur à autocompression réduite.
EP0689218B1 (fr) * 1994-06-20 1997-11-19 GEC Alsthom T&D AG Disjoncteur à gaz comprimé

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458120A (en) * 1981-07-14 1984-07-03 Bbc Brown, Boveri & Company, Limited High-voltage circuit breaker
EP0374384A2 (fr) * 1988-12-23 1990-06-27 Licentia Patent-Verwaltungs-GmbH Interrupteur monopression à SF6
DE9308586U1 (de) * 1993-06-04 1993-11-04 Siemens AG, 80333 München Elektrischer Hochspannungsleistungsschalter
EP0664552A1 (fr) * 1994-01-25 1995-07-26 Gec Alsthom T & D Sa Disjoncteur à auto-soufflage et à double mouvement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999012177A1 (fr) * 1997-08-18 1999-03-11 Siemens Aktiengesellschaft Interrupteur electrique haute tension
EP2343721A1 (fr) * 2010-01-06 2011-07-13 ABB Research Ltd. Commutateur à haute tension isolé du gaz
WO2020011695A1 (fr) * 2018-07-12 2020-01-16 Siemens Aktiengesellschaft Commutateur à isolation gazeuse
US11676785B2 (en) 2018-07-12 2023-06-13 Siemens Energy Global GmbH & Co. KG Gas-insulated switch

Also Published As

Publication number Publication date
EP0766278A3 (fr) 1998-11-04
US5898149A (en) 1999-04-27
DE19536673A1 (de) 1997-04-03

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