EP2073229B1 - Court-circuiteur pyrotechnique à contacts électrique auto-serrant et ensemble de protection contre les arcs internes comportant un tel court-circuiteur - Google Patents

Court-circuiteur pyrotechnique à contacts électrique auto-serrant et ensemble de protection contre les arcs internes comportant un tel court-circuiteur Download PDF

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Publication number
EP2073229B1
EP2073229B1 EP20080354087 EP08354087A EP2073229B1 EP 2073229 B1 EP2073229 B1 EP 2073229B1 EP 20080354087 EP20080354087 EP 20080354087 EP 08354087 A EP08354087 A EP 08354087A EP 2073229 B1 EP2073229 B1 EP 2073229B1
Authority
EP
European Patent Office
Prior art keywords
electric
short
circuiting switch
connection means
movable
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.)
Active
Application number
EP20080354087
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2073229A1 (fr
Inventor
Hugues Filiputti
Mathias Lamien
Stephen Rowe
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.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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 Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2073229A1 publication Critical patent/EP2073229A1/fr
Application granted granted Critical
Publication of EP2073229B1 publication Critical patent/EP2073229B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/004—Closing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H79/00—Protective switches in which excess current causes the closing of contacts, e.g. for short-circuiting the apparatus to be protected

Definitions

  • the invention relates to an electrical short-circuiter between at least two electrical terminals.
  • the short-circuiter comprises an insulating casing in which are positioned a pyrotechnic actuator for moving a movable needle for closing a self-clamping electrical contact assembly.
  • Said moving needle is intended to move along a longitudinal axis between a first armed position and a second triggered position.
  • the short-circuiter comprises a self-tightening electrical contact assembly comprising a movable conductive member intended to be connected to at least a first electrical terminal and extending along a longitudinal axis and a hollow envelope intended to be connected to a second electrical terminal. .
  • Said member and said envelope are intended to come into electrical contact by moving relative to each other under the action of the moving needle.
  • the invention also relates to a set of protection against internal arcs for connecting an electrical busbar to the ground and comprising at least one short-circuiter according to the invention.
  • the desired performance is very high.
  • the short-circuiting times of the earthed phases must be very short and the contact closed state must be long enough for an upstream circuit breaker to detect the short-circuit fault and cut the power supply.
  • the short-circuit currents are of the order of 50kA or higher.
  • the internal arc short-circuiter must also have a high dielectric withstand especially supporting lightning strikes.
  • the invention therefore aims to overcome the drawbacks of the state of the art, so as to provide a pyrotechnic electric short-circuiter high dielectric strength and allowing high current flow current.
  • the movable conductive member of the short-circuiter comprises a first electrical contact zone connected to the outer periphery of said member by at least one shoulder.
  • the hollow envelope comprises first deformable electrical connection means intended to come into contact with said at least one a shoulder to move under the action of a force to push and deform against a displacement stop.
  • Said first deformed electrical connection means develops a clamping force having a principal component directed in a radial direction perpendicular to the longitudinal axis.
  • the clamping force provides an electromechanical connection between the first electrical contact area of the movable conductive member and the first deformable electrical connection means.
  • the first deformable electrical connection means have an annular shape.
  • Said annular shape has an inner periphery of substantially identical section to that of the outer periphery of the first electrical contact area of the movable conductive member and an outer periphery of substantially identical section to that of the inner periphery of the hollow envelope.
  • said movable conductive member comprises a cylindrical section at the first electrical contact zone, section having an outer radius equal to the inner radius of said annular shape of the first deformable electrical connection means.
  • the first deformable electrical connection means comprise at least one metal washer having, in the radial direction, a developed surface greater than the surface projected on said direction.
  • said at least one metal washer has a conical shape.
  • the first deformable electrical connection means comprise at least two stacked conical metal washers.
  • said at least two conical metal washers are stacked head to tail.
  • the metal washers are mechanically connected two by two to form a conductive element.
  • the hollow envelope comprises intermediate compression means, said compression means being intended to move in contact with the shoulder and uniformly transmit the thrust force to the first deformable electrical connection means.
  • the movable conductive member is connected to the moving needle by a mechanical connection to form a mobile functional assembly, the needle and said member being at the same electrical potential.
  • the electric short-circuiter comprises at least second deformable electrical connection means electrically connected to at least one second electrical terminal and intended to come into electrical contact with a second electrical contact zone. of the movable functional assembly moving.
  • the deformable electrical connection means and the mobile conductive member are positioned in a vacuum interrupter, the electrical insulation being made by vacuum.
  • the short-circuiter comprises a semi-liquid dielectric designed to isolate the deformable electrical connection means from the mobile conducting member.
  • the semi-liquid dielectric comprises a silicone gel
  • the semi-liquid dielectric is contained in a contention cage.
  • the first electrical contact area is located at a first end of the movable conductive member, said first end having a pointed and hollow penetration area.
  • the first electrical contact zone of the first end is rough and / or knurled and / or ridged.
  • the pyrotechnic actuator comprises a conductive jack body having means for being electrically connected to the first electrical terminal, electrical connection means maintaining a permanent electrical contact between the conductive cylinder body and the mobile functional assembly.
  • the electrical connection means comprise a multipoint annular contact positioned between the internal volume of the conductive cylinder body and the mobile functional assembly.
  • the moving needle comprises a first axial abutment intended to come into contact with a second abutment of the body of the jack to lock said needle in the tripped position.
  • the second stop of the cylinder body is deformable to absorb a portion of the displacement energy of the needle.
  • the mobile functional assembly is animated by a gyroscopic movement during its displacement along the longitudinal axis of displacement.
  • the pyrotechnic actuator comprises a sealing envelope placed inside the cylinder body and enveloping the moving needle.
  • the internal arc protection assembly comprises an internal arc detection sensor connected to a decision center, said decision unit connected to one or more short-circuiters being intended to enable the actuation of the internal arcs. pyrotechnic actuators.
  • the electric short-circuit-breaker 1 is intended to short-circuit at least two electrical terminals such as, for example, two phase conductors U, V, W between them, two or three U, V phase conductors, W to an earth terminal.
  • the short-circuiter 1 as represented on the Figures 4 and 5 allows for example to connect a phase conductor to a ground terminal.
  • the short-circuiter 1 has two operating positions; a closed position when all the electrical terminals are at the same electrical potential and an open position when the electrical terminals have different electrical potentials.
  • the short-circuiter 1 according to the different embodiments of the invention comprises an insulating jacket 100 in which are positioned a pyrotechnic actuator 200 and a self-clamping electrical contact assembly 300.
  • the operating energy released by the pyrotechnic actuator 200 ensures a high closing speed of the electrical contacts of the self-clamping electrical contact assembly 300.
  • the pyrotechnic actuator 200 comprises a movable needle 201 for moving and causing closing the assembly with self-tightening electrical contacts 300.
  • the moving needle 201 is intended to be propelled by compressed gases generated by the explosion of a pyrotechnic charge.
  • Said needle can move inside a cylinder body 202 along a longitudinal axis Y between a first armed position and a second triggered position.
  • the first armed position of the moving needle 201 generally corresponds to an open electrical state of the self-clamping electrical contact assembly 300.
  • the triggered position of the moving needle 201 generally corresponds to a closed electrical state of the contact assembly. electric self-tightening 300.
  • the short-circuiter 1 is in a closed state of operation when the self-clamping electrical contact assembly 300 is in a closed electrical state.
  • the short-circuiter 1 is in an open operating state when the self-clamping electrical contact assembly 300 is in an open electrical state.
  • the self-clamping electrical contact assembly 300 comprises a movable conductive member 301 extending along a longitudinal axis Y. Said movable conductive member 301 is adapted to be connected to at least a first electrical terminal.
  • the self-clamping electrical contact assembly 300 includes a hollow envelope 302 for connection to at least a second electrical terminal. The hollow envelope 302 and the movable conductive member 301 are intended to come into electrical contact by moving relative to each other under the action of the moving needle 201 of the pyrotechnic actuator 200.
  • the hollow envelope 302 is fixed in the insulating casing 100 of the short-circuiter 1.
  • the movable conductive member 301 is then intended to be propelled by the moving needle 201 of the pyrotechnic actuator 200.
  • the moving needle 201 is connected by a mechanical connection to a second end 313 of the movable conductive member 301.
  • the movement of the movable needle 201 causes that of the organ movable conductor 301 along the same longitudinal axis of displacement Y.
  • the moving needle 201 and the movable conductive member 301 form a single movable functional assembly 201-301. Indeed, the two parts constituting the mobile functional assembly 201-301 move simultaneously along the longitudinal axis of displacement Y and are at the same electrical potential.
  • the movable conductive member 301 has the first electrical contact zone.
  • This first electrical contact zone is preferably placed at a first end 312.
  • Said first electrical contact zone is connected to the outer periphery of said movable conductive member 301 by at least one shoulder 314.
  • the movable conductive member 301 is of cylindrical shape.
  • the diameter of the cylinder at the first end 312 is less than diameter of the rest of the movable conductive member 301.
  • the junction of the cylinders of different diameter then forms said shoulder 314.
  • the shoulder may be for example made by means of a washer engaged on the cylindrical body of the movable conductive member 301.
  • the hollow envelope 302 comprises first deformable electrical connection means 323.
  • Said first deformable electrical connection means 323 are intended to move and to deform under the action of a thrust force Fp generated by the conductive member mobile 301 on the move.
  • the thrust force Fp is generated when the shoulder 314 of the movable conductive member 301 comes into contact with the first deformable electrical connection means 323.
  • Said connection means, placed in contact or coming into contact with a displacement stop 322 then tend to deform.
  • Said first deformable first deformable electrical connection means 323 then develop a clamping force Fs having a principal component directed in a radial direction Z perpendicular to the longitudinal axis of displacement Y.
  • the clamping force Fs provides both a mechanical connection and an electrical connection. between the first electrical contact zone of the movable conductive member 301 and the deformable electrical connection means 303.
  • the movable conductive member 301 can not bounce against the hollow envelope 302. A harmful rebound would cause a reopening of the electrical contacts of the contact assembly 300.
  • the hollow envelope 302 preferably comprises a cylindrical opening bore.
  • the first deformable electrical connection means 323 are annular in shape and are positioned within the cylindrical bore. Said annular shape has an outer periphery of substantially identical section to that of the inner periphery of the bore of the hollow envelope 302.
  • the movable conductive member 301 has a cylindrical section at level the first electrical contact area.
  • the annular shape of the first deformable electrical connection means 323 has an inner periphery of substantially identical section to that of the outer periphery of the first electrical contact area of the movable conductive member 301.
  • the first deformable electrical connection means 323 comprise at least one metal washer 324.
  • Said at least one metal washer comprises, in the radial direction Z, a developed surface greater than the projected surface in this same direction.
  • said at least one metal washer 324 has a conical shape.
  • the first deformable electrical connection means 323 comprise at least two stacked conical metal washers 324.
  • the conical metal washers 324 are preferably stacked upside down.
  • the choice of the number of metal washers 324 to be stacked is conditioned by the electrical current density flowing through the self-clamping electrical contact assembly 300 when the short-circuiter 1 is in the closed position. According to a development mode, the short-circuiter 1 is intended for the circulation of short-circuit currents of several kilos amperes. Twelve metal washers 324 are then stacked head-spades against the displacement stop 322.
  • the metal washers 324 conical and stacked head to tail are mechanically connected in pairs to form a deformable conductive element.
  • the hollow envelope 302 comprises intermediate compression means 325 placed at the opening of the bore of the hollow envelope 302.
  • the intermediate compression means 325 comprise a metal washer whose internal diameter is less than outer diameter of the movable conductive member 301 so that the shoulder 314 can abut against said metal washer.
  • Said intermediate compression means 325 are intended to move in contact with the shoulder 314 and uniformly transmit the thrust force Fp to the first deformable electrical connection means 323.
  • the intermediate compression means 325 are conductive.
  • the first electrical contact zone and the first deformable electrical connection means 323 are isolated by a dielectric 4 or by vacuum.
  • a dielectric 4 is used to isolate the first electrical contact zone and the first deformable electrical connection means 323.
  • the dielectric 4 is semi liquid and preferably comprises a silicone gel.
  • the isolation distances between the electrical terminals must be sufficient to isolate them especially in the event of a lightning strike.
  • the first end 312 of the movable conductive member 301 comprises a pointed penetration zone.
  • the first end 312 of the movable conductive member 301 comprises a pointed and hollow penetration zone. Part of the dielectric 4 can infiltrate inside the movable conductive member 301 when the latter passes through the dielectric.
  • the mobile functional assembly 201-301 comprises a first zone and at least a second electrical contact zone.
  • the electrical contact zones are electrically connected to one another.
  • Said first electrical contact zone located at the first end 312 of the conductive member 301, is intended to be in electrical contact with the first deformable electrical connection means 323 of the hollow envelope 302 of the self-clamping contact assembly 300, said assembly then being in the closed position.
  • Said at least one second electrical contact zone of the mobile functional assembly 201-301 is intended to be connected to at least one second electrical terminal.
  • said at least one second electrical contact zone is permanently connected to the second terminal regardless of the electrical state of the self-clamping electrical contact assembly 300.
  • said at least one second electrical contact area is intended to be placed in contact with the second terminal after the movable conductive member 301 has begun moving, that is, after the moving needle 201 has left the armed position.
  • the mobile functional assembly 201-301 comprises at least a second electrical contact zone in permanent contact with a second electrical terminal of the short-circuiter.
  • the concept of permanent contact means that the contact between said second zone and the second electrical terminal is achieved regardless of the position of the movable conductive member 301.
  • the pyrotechnic actuator 200 comprises a conductive cylinder body 202 having a first and a second end. The connection between said second zone and said second terminal is achieved via a cylinder body 202 of the pyrotechnic actuator 200.
  • the first end is closed by a cylinder head 204.
  • the second end has an opening for the passage of the moving needle 201
  • a pyrotechnic initiator 206 placed inside the yoke 204 for generating a gas inside the cylinder body 202 and propelling the moving needle 201 through the second end.
  • the mobile functional assembly 201-301 is electrically connected to the second electrical terminal via the driver cylinder body 202.
  • the cylinder body 202 comprises means intended to be electrically connected to the first electrical terminal.
  • electrical connection means 207 maintain a permanent electrical contact between the conductive cylinder body 202 and the mobile functional assembly 201-301.
  • the electrical connection means 207 comprise a multipoint annular contact 207 positioned between the internal volume of the conductive cylinder body 202 and the mobile functional assembly 201-301.
  • the multipoint annular contact 207 is composed of at least one helical spring wound and positioned in a circular groove.
  • the groove is placed in the inner wall of the cylinder body 202.
  • the sizing and the number of multipoint annular contact 207 is a function of the caliber of the device and the intensity of the electric currents.
  • two multipoint annular contacts 207 are in contact with said second electrical contact zones of the mobile functional assembly 201-301.
  • a first multipoint annular contact 207 is in contact with the moving needle 201 and a second annular contact is in contact with the movable conductive member 301.
  • the jack body 202 may comprise an inner envelope 203 positioned inside said body and enveloping at least a portion of the movable needle 201.
  • the inner casing 203 ensures a better gas tightness generated by the pyrotechnic initiator 206 at the time of its activation.
  • the inner casing 203 also provides better mechanical strength at the time of the explosion of the pyrotechnic initiator charge 206.
  • the inner casing 203 has the shape of a tube.
  • the mobile functional assembly 201-301 preferably the moving needle 201, comprises a first axial abutment intended to come into contact with a second abutment of the body of the jack 202 to lock said needle in the tripped position.
  • the second stop can be positioned on the inner casing 203 of the cylinder body 202. Said second stop of the body of the jack 202 is deformable to absorb a part of the displacement energy of the moving needle 201.
  • the mobile functional assembly 201-301 comprises at least a second electrical zone in contact intended to be placed in contact with at least one second electrical terminal after the movable conductive member 301 has begun to move.
  • the self-clamping electrical contact assembly 300 When the short-circuiter 1 is in the open position, the self-clamping electrical contact assembly 300 is in an open state, and all electrical terminals are electrically isolated.
  • the self-clamping electrical contact assembly 300 is closed after a displacement of the mobile functional assembly 201-301.
  • the first electrical contact zone of the movable conductive member 301 is in contact with the first deformable electrical connection means 323 of the hollow envelope 302.
  • Said at least one second electrical contact zone is then in contact with a second electrical terminal via a second deformable electrical connection means 400.
  • the movable assembly 201-301 comes into contact with at least one second deformable electrical connection means 400 electrically connected to a second electrical terminal.
  • the second deformable electrical connection means 400 connected to a second electrical terminal are placed in short circuit with the first electrical terminal connected via the mobile functional assembly 201-301 and the first deformable electrical connection means 323. .
  • the short-circuiter 1 comprises three second deformable electrical connection means 400 respectively connected to an electrical terminal.
  • This embodiment makes it possible to short-circuit three phase conductors U, V, W to earth.
  • each second deformable electrical connection means 400 will be in contact with a second electrical contact zone of the mobile functional assembly 201-301, themselves connected to the one earth terminal via the set to self-clamping electrical contacts 300.
  • Said electrical contact areas of the movable functional assembly 201-301 are all at the same earth potential when the self-clamping electrical contact assembly 300 is in a closed state.
  • the means of the jack body 202 intended to be connected to the first electrical terminal are not.
  • the mobile functional assembly 201-301 is not in contact with an electrical terminal when the short-circuiter 1 is in the open position.
  • the short-circuiter 1 comprises only two second electric connection means with lamellae 400 respectively connected to a phase conductor.
  • the third phase conductor would then be connected to the cylinder body 202, itself electrically connected to the functional mobile assembly 201-301 by one or more multipoint annular contacts 207.
  • the electrical insulation between the deformable electrical connection means 400 may be made by vacuum, all the elements then being preferably positioned in a vacuum interrupter.
  • the second deformable electrical connection means 400 comprise circular lamellar electrical contacts 400.
  • the moving needle 201 is animated with a gyroscopic movement during its movement from the first armed position to the second triggered position. This gyro movement is transmitted to the movable conductive member 301 during its movement.
  • the dielectric 4 semi liquid is contained in a contention cage 303 placed in the insulating envelope.
  • the contention cage 303 comprises at least two rings connected by rods.
  • the first electrical contact zone of the first end 312 is rough and / or knurled and / or ridged. This surface state of the first contact zone allows better electrical contact of the contacts of the self-clamping electrical contact assembly 300 in the closed position.
  • all the electrical contact zones of the mobile functional assembly 201-301 are rough and / or knurled and / or ridged.
  • the invention also relates to a protection assembly against internal arcs.
  • said assembly is intended for the protection of an electrical installation powered by an electric busbar U, V, W.
  • the assembly protection is intended to connect all the electric bars U, V, W to earth. This earth connection must be carried out during the time required for complete disconnection of the installation by a circuit breaker.
  • Said protection circuit breaker is generally placed upstream of the short-circuit fault.
  • the internal arc protection kit includes a specific sensor that detects the internal arc.
  • This sensor can in particular be an optical sensor.
  • This sensor is connected, preferably by fibers
  • This decision unit 2 authorizes the actuation of the pyrotechnic actuators of one or more short-circuiter 1 according to the invention.
  • An optical fiber link allows very fast information transfers.
  • each phase can be connected to the earth by a short-circuiter 1 independent, it will speak of short-circuiter 1 single phase.
  • the decision unit 2 causes the pyrotechnic actuators of each short-circuiter 1 to be fired.
  • the synchronization between the three short-circuiters 1 is ensured by the detonation tube 22.
  • the triggering of a single short-circuit circuiter 1 ensures simultaneous closure of the other two.
  • the firing of the pyrotechnic charge causes the almost instantaneous translation of a mobile functional assembly 201-301. Said assembly is placed and locked in the first deformable electrical connection means 323. All the electrical terminals U, V, W are then short-circuited to earth in a few microseconds.
  • the internal arc protection assembly also includes a specific sensor to detect the internal arc. This sensor is connected to the decision unit 2 which authorizes the actuation of the pyrotechnic actuator of the three-phase short-circuiter 1.

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EP20080354087 2007-12-18 2008-11-21 Court-circuiteur pyrotechnique à contacts électrique auto-serrant et ensemble de protection contre les arcs internes comportant un tel court-circuiteur Active EP2073229B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0708815A FR2925214B1 (fr) 2007-12-18 2007-12-18 Court-circuit pyrotechnique a contacts electrique auto-serrant et ensemble de protection contre les arcs internes comportant un tel court-circuiteur

Publications (2)

Publication Number Publication Date
EP2073229A1 EP2073229A1 (fr) 2009-06-24
EP2073229B1 true EP2073229B1 (fr) 2013-08-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080354087 Active EP2073229B1 (fr) 2007-12-18 2008-11-21 Court-circuiteur pyrotechnique à contacts électrique auto-serrant et ensemble de protection contre les arcs internes comportant un tel court-circuiteur

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Country Link
EP (1) EP2073229B1 (es)
ES (1) ES2431675T3 (es)
FR (1) FR2925214B1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101013709B1 (ko) 2008-12-03 2011-02-10 엘에스산전 주식회사 수배전반의 고속 투입 스위치
DE102011017306A1 (de) * 2011-01-12 2012-07-12 Abb Technology Ag Hochspannungsschaltanlage mit gasförmiger Isolation
FR2980301B1 (fr) 2011-09-21 2014-06-20 Schneider Electric Ind Sas Court-circuiteur electrique a actionneur pyrotechnique
FR2983003B1 (fr) 2011-11-22 2014-09-12 Schneider Electric Ind Sas Dispositif et procede de protection contre un arc electrique
WO2016177433A1 (en) 2015-05-07 2016-11-10 Abb Technology Ltd Permanent short-circuit device
KR101870016B1 (ko) * 2016-02-16 2018-07-23 엘에스산전 주식회사 바이패스 스위치
DE102020203936B3 (de) * 2020-03-26 2021-08-05 Siemens Energy Global GmbH & Co. KG Elektrische Kurzschließer-Einrichtung für Mittel- und Hoch-spannung und gasisolierter Schalter

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DE1094864B (de) * 1959-06-05 1960-12-15 Siemens Ag Kurzschliesser zur UEberbrueckung von Stoerlichtboegen in elektrischen Mittel- oder Hochspannungsanlagen
US4427963A (en) * 1982-11-01 1984-01-24 S & C Electric Company Brake and operation indicator for a high-voltage switch
US4852494A (en) 1987-11-16 1989-08-01 Williams Robert A Explosively actuated switch
DE19746566A1 (de) 1997-10-22 1999-04-29 Kloeckner Moeller Gmbh Kurzschließer, insbesondere für eine Störlichtbogen-Schutzvorrichtung zur Verwendung in Anlagen zur Verteilung elektrischer Energie
US20030231439A1 (en) * 2002-06-14 2003-12-18 Juds Mark Allan Bullet assembly for a vacuum arc interrupter
US6952332B2 (en) 2002-06-14 2005-10-04 Eaton Corporation Vacuum arc eliminator having a bullet assembly actuated by a gas generating device

Also Published As

Publication number Publication date
ES2431675T3 (es) 2013-11-27
FR2925214A1 (fr) 2009-06-19
EP2073229A1 (fr) 2009-06-24
FR2925214B1 (fr) 2009-11-27

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