WO2016013022A1 - Dispositif interrupteur à système de contact à double mouvement relatif - Google Patents

Dispositif interrupteur à système de contact à double mouvement relatif Download PDF

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Publication number
WO2016013022A1
WO2016013022A1 PCT/IN2015/000243 IN2015000243W WO2016013022A1 WO 2016013022 A1 WO2016013022 A1 WO 2016013022A1 IN 2015000243 W IN2015000243 W IN 2015000243W WO 2016013022 A1 WO2016013022 A1 WO 2016013022A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
socket
dynamic
coupled
current carrying
Prior art date
Application number
PCT/IN2015/000243
Other languages
English (en)
Inventor
Mandava Mohana Rao Dr.
Original Assignee
Bharat Heavy Electricals Limited
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 Bharat Heavy Electricals Limited filed Critical Bharat Heavy Electricals Limited
Priority to KR1020177004963A priority Critical patent/KR20170044663A/ko
Priority to CN201580051023.8A priority patent/CN107077987B/zh
Publication of WO2016013022A1 publication Critical patent/WO2016013022A1/fr

Links

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
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • 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
    • 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

  • TITLE INTERRUPTER DEVICE WITH RELATIVE DUAL MOTION CONTACT SYSTEM
  • the present invention relates to advanced Gas Interrupter device.
  • it relates to a Interrupter with dual motion contact system.
  • Patented Invention related to this subject matter are US 20080257866A1, US 4937406 and US 5739495.
  • US 20080257866A1 discloses invention relates to a circuit breaker (1) for high or medium voltages, of the type having a drive bar (70) coupled to a drive member, and a circuit-breaking chamber (2) facing it and having two contacts (3, 4), each contact (3, 4) including a main contact (30, 40 respectively) and an arcing contact (31, 41 respectively), with one of the two contacts (3) being fixed to a blast or extinguishing nozzle (32).
  • the second contact (4) and the drive bar (70) are joined together by coupling means (6) in such a way that they move together in translation in the same direction, the transmission means (5) being disposed on the side (21) of the chamber (2) that is adjacent to the drive bar (70), and are adapted to transmit the motion of the driven second contact (4) to the first contact (3).
  • US 4937406 discloses an insulator-type gas circuit interrupter which comprises a movable contact and a stationary contact for closing and separating a main circuit and an insulator tube in which an arc-extinguishing chamber of a frustoconical configuration is defined.
  • the movable contact is disposed in the frustoconical arc- extinguishing chamber at its smaller inner diameter side
  • the stationary contact is disposed in the frustoconical arc-extinguishing chamber at its larger inner diameter side.
  • An electrically insulating gas is sealed inside of the frustoconical arc-extinguishing chamber.
  • US 5739495 discloses PCT No. PCT/DE95/00631 Sec. 371 Date Nov. 26, 1996 Sec. 102(e) Date Nov. 26, 1996 PCT Filed May 8, 1995 PCT Pub. No. W095/33274 PCT Pub. Date Dec. 7, 1995A compressed-gas circuit breaker is provided with two contacts arranged coaxially opposite one another, at least one of which can be driven to move in the axial direction.
  • the two contacts define in the interrupted state a contact gap.
  • the circuit breaker also has a nozzle, made of insulating material, which is connected to the driven contact and which surrounds at least part of the contact gap.
  • the invention calls for a high-strength plastic tube abutting coaxially against the outside of the insulating nozzle in order to prevent the nozzle from expanding radially as a result of an increase in arc-extinguishing gas pressure.
  • Another object of the present invention is to achieve lowest electrical stress levels on second movable contact.
  • Another object of the present invention is to vent out arced gas during current interruption.
  • Another object of the present invention is to accomplish pre-defined speed travel characteristics of dynamic field controlled electrode through a novel trajectory plate.
  • Another object of present invention is to limit very high pressures at the end of stroke particularly for higher fault currents. Yet another object of present invention is to provide protection of inter-electrode gap (current transfer contact system) from hot/conducting gas contamination.
  • a movable shield approach has been innovated. Accordingly there is provided a interrupter device with a pin surrounded by dynamic field controlled electrode, configured with relative motion contact system. According to the present invention, a nozzle, is coupled to trajectory plate through suitable couplers known as charging links which in turn controls the movement of dynamic field controlled electrode.
  • the present invention further provides a interrupter device comprising a dual motion contact system with three strategically coupled volumes to effectuate efficient gas flow rate at interruption.
  • the entire contact system being surrounded by a pressurized gas, such as Sulphur Hexafluoride (SF 6 ) or mixture of SF 6 gas with other insulating gases or equivalent gases.
  • a pressurized gas such as Sulphur Hexafluoride (SF 6 ) or mixture of SF 6 gas with other insulating gases or equivalent gases.
  • profile of trajectory plate is designed in such a way that the location of dynamic field electrode between the contacts can be adjusted for maximum benefit, preventing stagnation/occupation of hot gas in the inter-electrode gap of the contact system.
  • the present invention propose and claim protection for a relative motion system in which pin operates on its own during current interruption. The necessary energy required for this movement is stored/ gained during preceding closing operation. It is the novelty of the design that the pin is again under the control of primary driving system and proper closing and opening of the contact system are ensured.
  • the interrupter of present invention additionally comprises features of reduction in operating energies for the interrupter.
  • Another embodiment of present invention is top dome which is housing for trajectory plate and covers the dual motion mechanism, trajectory plate and charging links, guide rods and provides uniform electric field.
  • Scissor lever arrangement is used in the present invention for coupling of nozzle to the dynamic field controlled electrode for operation of dynamic field controlled electrode.
  • Present invention also provides an additional movement to the movable contact due to arc energy generated by current interruption.
  • Fig.5 Dynamic Field controlled electrode assembly.
  • Fig.6 Scissor lever arrangement for coupling of nozzle to dynamic field controlled electrode.
  • the electrostatic field, between movable and fixed contacts, is non-uniform for various reasons like electrode profile and relative position of contacts.
  • the field intensification adversely affects voltage withstanding capabilities of the gas gap.
  • the availability of hot and conducting gas further complicates the situation preventing successful interruption.
  • the arced gas after leaving the nozzle may spill out into the contact system due to improper channeling and this may lead to thermal failures.
  • minimum arcing time is decided by the effectiveness with which arcing gas is being removed across inter-electrode gas gap and uniformity of the electrostatic field between arcing contacts. To overcome this problem, creepage length of nozzle is increased by different ways.
  • the contact system is arranged in metallic enclosure without arcing chamber assembly. This arrangement may cause premature gas breakdowns during current interruption as the arced gas is not contained and may directly make contact with metallic enclosure (refer Fig. 2(a)).
  • Fig. 2(a) In conventional designs of insulated arcing chamber, when contacts are in open condition, the electrostatic field across the insulator may be close to uniform. In the absence of shields integrated to insulated arcing chamber the surface stress cannot be controlled to the extent of requirement by means of arcing and current carrying contact shields (refer US patent 4937406).
  • inter-electrode gap not only depends on the effective removal of arced gas but also on the density of fresh gas which occupies the arced gas region.
  • mach number more than one due to sudden expansion of gas (ref: US Patent No: 5739495).
  • gas pressure rise near throat region falls abruptly and sometimes negative (refer Fig. 3). This in turn create low gas density region which become critical for withstanding transient recovery voltages during current interruption.
  • the socket (01), made of a high conductivity and low erosion material is held on a socket support or protection volume (02).
  • the socket is covered by a insulating shroud (03) made from low erosion insulating material.
  • the nozzle (05) is fixed to dynamic current carrying (CC) contact (04) and to the socket contact assembly.
  • the socket (01), insulating shroud (03) and current carrying contact (04) are termed as the socket contact assembly.
  • Fig.4 shows the first movable contact assembly.
  • the pin (06) In interrupter fully open condition, the pin (06) is surrounded by a dynamic field controlled electrode (07).
  • the pin is located inside the dynamic field electrode and the arrangement is again inside the stationary current carrying (CC) contact assembly.
  • the pin is dimensioned such that it promotes uniform electrostatic field between the two contacts. The dimensions of the pin is also decided by the fault current to be interrupted, pressure window required to interrupt all possible test duties.
  • the static current carrying contact assembly comprising static current carrying (CC) contact (08) and static current carrying contact shield (09).
  • the arcing contact system and current carrying contact system are placed in insulated arcing chamber assembly (10).
  • the insulated arcing chamber assembly consists of HT shield I (11) and HT shield II (12) (shielding electrodes) integrated to insulated arcing chamber on either side.
  • the insulated chamber is made of Aramid/Kevlar of a combination of these fibers or equivalent material wound and impregnated with epoxy resin in vacuum/pressure.
  • the internal and external surfaces of insulated chamber are resistant against arced SF6 gas.
  • the profiles of HT shields are to maintain uniform E-field between the arcing contact system and current carrying contacts systems.
  • the Invented device is constituted by three strategically coupled volumes. This aim of the arrangement is to achieve efficient gas flow rate at interruption.
  • the first volume is the compression volume (13), where a piston-cylinder arrangement allows storage of cold gas and its compression during interruption by movement of a piston conventionally coupled to the operating mechanism/drive. Fresh gas is collected and retained in this volume during closing operation.
  • the second is an expansion volume (15), where the available gas is directly exposed to arc during contact separation/arcing.
  • the third volume is an intermediate volume (14), where stored gas is compressed by expansion volume (15) gas and where gas pressure rises during arcing period due to both compression by expansion volume gas and by mixing.
  • There is an additional volume in series to compression volume called as protection volume (02).
  • This volume helps to avoid in creating excessive gas pressures and will not load the mechanism.
  • One more objective of the breaker to provide back-up volume to the compression volume (13) is to limit extremely high pressures during higher arcing periods as pressure build-up in compression volume (13) is much higher in two stage blast interruption.
  • This protection volume (02) shall be optimized so that interruption during no-load/light load conditions is not affected.
  • Fig. 5 shows the dynamic field controlled electrode system.
  • the entire contact system is surrounded by SF 6 gas at design density.
  • the socket is separated from the static current carrying contact shield by a design distance, proportional to the system voltage and the SF 6 gas density.
  • dynamic field controlled electrode (07) moves in downward direction at a predefined instant of its operation depending on anticipated minimum arcing time and the instant at which pin (06) contact crosses the dynamic field controlled electrode (07). More clearly, at current-zero, the voltage withstand capabilities between contacts is improved in the presence of dynamic field controlled electrode (07).
  • Socket assembly is coupled to dynamic field controlled electrode (07) through nozzle (05) by means of a trajectory plate (16). Profile of trajectory plate (16) is designed in such a way that the location of dynamic field electrode between the contacts can be adjusted for maximum benefit.
  • the socket contact system, dynamic field controlled electrode (07) and the coupling system are arranged such that at first current-zero the hot gas is vented to main volume through the guided nozzle (05), preventing stagnation/occupation of hot gas in the inter-electrode gap of the contact system.
  • the trajectory plate (16) is profiled in such a way that it decides the following parameters:
  • One embodiment of present invention is the nozzle (05) which is coupled to trajectory plate (16) through suitable couplers known as charging links (17) which in turn controls the movement of dynamic field controlled electrode (07).
  • the dynamic field electrode is coupled to trajectory plate (16) by means of guide rods (18).
  • the charging link (17) has a guiding slot whose configuration is designed by the stroke of breaker and distance by which pin (06) travels.
  • Fig. 5 shows the interrupter with dynamic field electrode.
  • the pin (06) is compressed against damper (19) force and guided by current collector (20) when the CB is in open condition.
  • the pin (06) is connected to the charging link (17) through a mechanical arrangement (21). This arrangement helps the pin (06) to engage permanently with socket assembly and does not allow the pin (06) to move independently.
  • the mechanical arrangement (21) comes into operation and the pin guided by damper (19) gets compressed. This in turn results in movement of pin (06) and storage of spring energy in the damper (19).
  • the toggle between mechanical arrangement (21) and charging link (17) ensures pin location; the toggle is reactivated by open command of the interrupter.
  • the pin (06) is initially held by the socket, friction between pin (06) and socket (01).
  • the pin (06) on release from socket (01) moves at a speed decided by energy stored, weight of the pin (06) and friction offered by current collector (20). As the travel of the pin (06) in controlled, it acts as a static contact beyond this travel.
  • Fig. 5 shows the invented interrupter with a relative motion contact system approach.
  • the mechanical arrangement (21) consists of a rotary shaft (21A) supported at either end by bearing housings through load bearings. Suitable levers (21B) are used to couple rotary shaft (21A) and movable arcing contact (pin) (06).
  • the dimensions of lever (2 IB) and angle of rotation are decided by stroke and speed of the second movable contact (06).
  • the speed of second movable contact (06) is designed based on dielectric recovery requirements of the interrupter at minimum arcing time.
  • the trajectory of dynamic field controlled electrode (07) is designed based on position with respect to time instant after contact separation.
  • the present invention propose and claim a relative motion system in which pin (06) operates on its own during current interruption.
  • the necessary energy required for this movement is stored/ gained during preceding closing operation.
  • the pin (06) is again under the control of primary driving system and proper closing and opening of the contact system are ensured.
  • the interrupter invented additionally features reduction in operating energies for the interrupter.
  • the main drive is coupled to dynamic field controlled electrode (07) through insulating nozzle (05), trajectory plate (16) and scissor levers (22).
  • the trajectory plate (16) is fixed to the top dome (23) of the assembly.
  • One more objective of the patent is design of top dome (23) which is housing for trajectory plate (16) and covers the dual motion mechanism, trajectory plate (16) and charging links (17), guide rods (18) and provides uniform electric field.
  • Top dome (23) is in spherical shape made from thin sheet and a member (23A) is integrated to it to couple to trajectory plate (16).
  • Top dome (23) has provision to couple mechanically to dual motion mechanism housing (24), which holds the mechanical arrangement (21).
  • the guide rods (18) are coupled to moving element (25) which in turn coupled to trajectory plate (16).
  • the charging links (17) from nozzle (05) are coupled to the trajectory plate (16) through scissor lever arrangement (26).
  • the scissor lever arrangement (26) consists of two levers from each charging link (17).
  • the set of levers (22) from each charging link (17) are connected to other set of levers through a moving element (25). Suitable guiding element and spacers are provided between levers to ensure smooth operation of dynamic field controlled electrode (07).
  • One more objective of the present invention is to guide arced gas venting out during current interruption.
  • the proposed model prevents hot/arced gas contamination of inter-electrode gap during current interruption.
  • a nozzle holder (27) with suitable inner guide ring (28) is kept inside a metal tube (29).
  • the metal tube is integrated with dynamic field controlled electrode (07).
  • the dynamic field controlled electrode (07) will be guided by outer guide ring (30) located in static current carrying (CC) contact (08).
  • the arced gas venting out from nozzle will not be allowed to leak into the contact system because of the inner and outer guide rings (28, 30).
  • Fig. 6 shows the scissor lever arrangement is used in the present invention for coupling of nozzle to the dynamic field controlled electrode.
  • the second terminal of the nozzle (05) is coupled to the pin (06) through a mechanical arrangement (21) and an energy storage device.
  • the second terminal of the nozzle (05) is at a fixed potential rather than at floating potential as in the some of the conventional systems.
  • the nozzle (05) design is optimized by considering mechanical, thermal, electrical and flow parameters.
  • the nozzle (05) shall withstand to mechanical forces offered by drive and gas pressure rise during arcing phenomena.
  • the design shall be suitable for uniform electrostatic field across nozzle surface and effective mass (pressurized gas) transportation. Total profile of proposed nozzle (05) has been divided into five zones.
  • CZl Converging zone
  • SZ1 straight zone or throat region
  • SZ1 First diverging zone DZ1
  • Second diverging zone DZ2 Second diverging zone
  • third diverging DZ3 35
  • Each zone has its significance in the gas flow and decides the performance of circuit breaker during current interruption.
  • CZl (31) is a converging zone connects intermediate volume (12) and throat region.
  • SZ1 (32) is a straight zone or throat zone, connects converging to diverging portion of the nozzle. The distance to which it occupies depends primarily on speed of the moving contact system. The diameter of the throat depends on fault current to be interrupted. If the throat zone (32) is less than required input pressure from thermal volume may not be sufficient to develop necessary density for the gas across the contact system.
  • the diverging angle of the diverging zones (DZ1, DZ2 and DZ3) is different from each other.
  • the angle of divergence of DZ1 (33) is about 40 to 60 degrees.
  • the distance to which this zone occupies depend on the diameter of throat/fixed contact/ fixed movable contact.
  • This profile decides the density of gas in the SZ1 zone (32) and DZ1 zone (33) during current zero period.
  • DZl profile decides with standability of breaker for transient recovery voltage at current zero. If the profile allows sudden expansion, there is a possibility of Mach number more than 1 (one) and negative pressure prevails in the SZ1 zone (32) and in divergence zone DZl (33).
  • the divergence angle of DZ2 (34) is about 2 to 5 degrees. The distance to which this zone occupies depends on speed of the moving contact / fixed contact (dual motion) and arcing times of the breaker. Gas flow rate across arcing channel shall be sufficient enough to quench the arc around current zero. If the angle of the DZ2 zone (34) is less, contact system has to travel more distance to get sufficient gas flow and may increase arcing time.
  • the divergence angle of DZ3 (35) zone is about 40 degrees or more.
  • One more objective of the design is to increase the operating speed of second movable contact (06) using arcing energy.
  • the nozzle design is made in such a way that during nozzle clogging, the pressure in expansion volume (15) helps to increase the opening speed of second movable contact (06).
  • the gas pressure in expansion volume (15) increases with increase of fault current. Under light load conditions, only spring (19) energy will be used to open the second movable contact (06). The time over which nozzle clogging takes place decides the pressure build-up and speed of the second movable contact (06).
  • One more objective of present patent is to provide adjustable coupling (36) from breaker pole to terminals of breaker (37) as it requires high quality manufacturing to achieve linear and angular accuracy.
  • the proposed coupling element (36) is adjustable in both directions and transfers current effectively from/to the circuit breaker pole. This is achieved by using adjustable spacers (38) on either side of coupling element.
  • Fig. 8 shows the flexible coupling element. This coupling is effective for higher fault currents of tens of kilo amperes and higher rated currents of thousands of amperes.
  • This coupling element (36) consists of cylindrical member of rotatable type with current transfer contacts (39). This coupling transfers current from dual motion mechanism housing (24) to circuit breaker terminal (37).
  • the mechanism housing transfers current from static current carrying (CC) contact (08) to coupling element (36).
  • the breaker terminal (37) transfers current to the next GIS module through support insulator (40).
  • the circuit breaker pole is located in a grounded metallic enclosure (41).
  • Fig. 9 shows the invented interrupter with a relative motion contact system and dynamic field controlled electrode for gas interrupter, in closed condition.

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  • Circuit Breakers (AREA)

Abstract

L'invention concerne un dispositif interrupteur qui permet d'améliorer l'efficacité d'interruption de disjoncteurs haute tension et qui comporte un premier ensemble contact mobile qui comporte une douille (1) encapsulée dans une enveloppe isolante (3), ladite douille étant maintenue sur un support ou un volume de protection (2), et un ensemble contact porteur de courant dynamique (4), l'ensemble contact à douille (1, 2, 3) et le contact dynamique (4) étant couplés par une buse (5), un second ensemble contact mobile (6), disposé à l'intérieur d'une électrode de commande de champ dynamique (7), ledit agencement étant positionné à l'intérieur d'un ensemble contact porteur de courant fixe qui comporte un contact porteur de courant fixe (8) et un écran protecteur de contact CC fixe (9), trois volumes cohérents pour un fonctionnement stable, le débit de gaz au moment d'interruption du troisième volume (14) étant couplé en série avec ledit volume de protection (2), le circuit d'attaque principal étant couplé à l'électrode de commande de champ dynamique pour effectuer un mouvement relatif du système de contact.
PCT/IN2015/000243 2014-07-22 2015-06-16 Dispositif interrupteur à système de contact à double mouvement relatif WO2016013022A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020177004963A KR20170044663A (ko) 2014-07-22 2015-06-16 상대적 이중 운동 접촉 시스템을 가진 인터럽터 디바이스
CN201580051023.8A CN107077987B (zh) 2014-07-22 2015-06-16 具有相对双运动触点系统的断续器装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN788KO2014 2014-07-22
IN788/KOL/2014 2014-07-22

Publications (1)

Publication Number Publication Date
WO2016013022A1 true WO2016013022A1 (fr) 2016-01-28

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PCT/IN2015/000243 WO2016013022A1 (fr) 2014-07-22 2015-06-16 Dispositif interrupteur à système de contact à double mouvement relatif

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Country Link
KR (1) KR20170044663A (fr)
CN (1) CN107077987B (fr)
WO (1) WO2016013022A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2491675A1 (fr) * 1980-10-07 1982-04-09 Alsthom Atlantique Dispositif de coupure a double mouvement des contacts
US4937406A (en) 1988-02-23 1990-06-26 Mitsubishi Denki Kabushiki Kaisha Insulator-type gas circuit interrupter
WO1995033274A1 (fr) 1994-05-31 1995-12-07 Siemens Aktiengesellschaft Interrupteur de puissance a gaz sous pression, dote d'une buse en matiere isolante
EP1906425A1 (fr) * 2006-09-29 2008-04-02 Areva T&D Sa Actionnement par came cylindrique des contacts d'une chambre de coupure à double mouvement
US20080257866A1 (en) 2007-04-17 2008-10-23 Tour Areva Circuit breaker with a double acting circuit-breaking chamber and an inverted structure
EP2645396A1 (fr) * 2012-03-30 2013-10-02 Alstom Technology Ltd Disjoncteur à gaz comprimé
WO2014001160A1 (fr) * 2012-06-29 2014-01-03 Siemens Aktiengesellschaft Dispositif de commutation

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2491675A1 (fr) * 1980-10-07 1982-04-09 Alsthom Atlantique Dispositif de coupure a double mouvement des contacts
US4937406A (en) 1988-02-23 1990-06-26 Mitsubishi Denki Kabushiki Kaisha Insulator-type gas circuit interrupter
WO1995033274A1 (fr) 1994-05-31 1995-12-07 Siemens Aktiengesellschaft Interrupteur de puissance a gaz sous pression, dote d'une buse en matiere isolante
US5739495A (en) 1994-05-31 1998-04-14 Siemens Aktiengesellschaft Puffer-type circuit breaker and nozzle emitting gas with coaxial abutting plastic tube
EP1906425A1 (fr) * 2006-09-29 2008-04-02 Areva T&D Sa Actionnement par came cylindrique des contacts d'une chambre de coupure à double mouvement
US20080257866A1 (en) 2007-04-17 2008-10-23 Tour Areva Circuit breaker with a double acting circuit-breaking chamber and an inverted structure
EP2645396A1 (fr) * 2012-03-30 2013-10-02 Alstom Technology Ltd Disjoncteur à gaz comprimé
WO2014001160A1 (fr) * 2012-06-29 2014-01-03 Siemens Aktiengesellschaft Dispositif de commutation

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Publication number Publication date
CN107077987A (zh) 2017-08-18
KR20170044663A (ko) 2017-04-25
CN107077987B (zh) 2020-02-28

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