EP2479769B1 - Dispositif de coupure moyenne tension comprenant une ampoule à vide - Google Patents

Dispositif de coupure moyenne tension comprenant une ampoule à vide Download PDF

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Publication number
EP2479769B1
EP2479769B1 EP11354078.5A EP11354078A EP2479769B1 EP 2479769 B1 EP2479769 B1 EP 2479769B1 EP 11354078 A EP11354078 A EP 11354078A EP 2479769 B1 EP2479769 B1 EP 2479769B1
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EP
European Patent Office
Prior art keywords
breaking device
rod
current breaking
contact
rocker arm
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
EP11354078.5A
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German (de)
English (en)
French (fr)
Other versions
EP2479769A1 (fr
Inventor
Patrice Grosjean
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
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Schneider Electric Industries SAS
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Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2479769A1 publication Critical patent/EP2479769A1/fr
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Publication of EP2479769B1 publication Critical patent/EP2479769B1/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
    • H01H33/60—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
    • H01H33/666—Operating arrangements
    • H01H33/6661—Combination with other type of switch, e.g. for load break 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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • H01H33/126—Load break switches comprising a separate circuit breaker being operated by the distal end of a sectionalising contact arm

Definitions

  • the object of the invention is an electric switch or circuit breaker, particularly suitable for medium voltage, and comprising a vacuum interrupter; the term “medium voltage” (MV) is used in its usual acceptance, ie for a voltage that is greater than 1000 volts AC and 1500 volts DC but does not exceed 52000 volts AC and 75000 volts AC. volts in direct current.
  • MV medium voltage
  • Such devices must ensure the shutdown and isolation of electrical circuits.
  • Their base element is a movable main contact on the electrical circuit so as to have a closed state and an open state of the circuit. Cutting the circuit can however be problematic because of the appearance of an arc crossing the movable contact even when it has been opened. Vacuum bulbs are therefore often added as a bypass to the main contact, so as to pass the current as soon as the main contact is open, which avoids the formation of an arc. When the vacuum bulb is opened in its turn, the circuit is cut reliably since the arc goes out immediately in the vacuum of the bulb.
  • the control mechanism by which the vacuum interrupter is open is advantageously actuated by the movable contact itself during part of its opening stroke so that the operator has only one command to perform and the opening of the Vacuum bulb is synchronized with that of the main circuit with a very small delay.
  • the documents US-A-5,168,139 , FR-A-2,731,434 and FR-A-2,937,786 describe vacuum bulbs or switches including
  • EP 2 182 536 A1 discloses a power cut-off device according to the preamble of claim 1.
  • An object of the invention is therefore to simplify such switches and / or circuit breakers, more generally electrical cutoff devices, in particular medium voltage.
  • the invention relates to a device that is particularly suitable for medium-voltage shutdown, having a bypass vacuum bulb on a main electrical circuit that can be opened or closed by a movable main contact, the vacuum interrupter having a rod passing through an envelope and carrying a movable contact of said vacuum interrupter, the switch further comprising a control mechanism of the vacuum interrupter actuated by the main contact and actuating the rod and comprising a rotary pendulum connecting the rod and the mobile main contact.
  • the balance is rigid and comprises two hinge regions around which it rotates respectively during the openings and closings of the main electrical circuit.
  • the known complex balance composed of two parts hinged together, is replaced by a unitary balance and mounted flexibly, without fixed points of articulation.
  • the use of a hinge that could be described as oscillating between two fixed points in the direction of rotation of the pendulum allows it to fully intercept the main moving contact in one direction and to be moved by it, but of retract in front of him in the other direction of movement.
  • the mechanism also comprises a rod return spring to an invariable state, which can be connected, for example, to a fixed structure of the switch or balance, or between the envelope and the rod of the vacuum bulb.
  • the balance is articulated to the rod at one of said articulation regions.
  • the control mechanism may then comprise, at the other of said articulation regions, a fixed axis, and a portion of the balance provided with an oblong slot in which the axis plays when the balance wheel rotates around said one of the regions of 'joint.
  • the rod is fixed rigidly to the balance and flexible; the hinge regions are then advantageously points of contact of the balance to fixed parts of the switch, the balance being connected only to the rod in a state not solicited by the movable main contact; said fixed parts of the cut-off device can belong to a sleeve fixed to the vacuum bulb and surrounding the rod, and are situated on either side of the rod.
  • Electrical conduction through the bypass to the vacuum interrupter can be provided by the pendulum, or possibly by a conductive switching tab electrically connected to the moving contact of the vacuum interrupter, and extending to a free end superimposed approximately at a free end of the beam which intercepts the movable main contact, the movable main contact rubbing on the free end of the switching tab.
  • the rocker can also rub on the switch tab with a greater resistance than a force exerted by the return spring; this design makes it possible to establish two stable states of the switch at different positions of the beam in the absence of bias by the movable main contact.
  • the movable main contact can be rotating or sliding.
  • the switching device here a switch, comprises a main circuit consisting of an upstream fixed contact (1), a downstream fixed contact (2), a main movable contact (3) connected to the downstream fixed contact ( 2) by a hinge (4) and having a free end (5) for connecting with the free end of the upstream fixed contact (1) to establish a closed state of the circuit, shown in this figure 1 .
  • the vacuum bulb (6) forms a bypass of the main circuit.
  • It comprises an envelope (7), a fixed contact (8) electrically connected to the upstream fixed contact (1) through the envelope (7), a movable contact (9) present in the envelope (7), located at the end a rod (10) whose opposite end extends out of the casing (7) forming a hinge and also with a rocker (12), and the movable contact (9) touches the fixed contact (8) in the closed state of the vacuum interrupter (6), shown here.
  • the tightness of the interior of the casing (7) is preserved by a bellows (13) surrounding the rod (10), one end of which is sealed against an edge of the casing (7) and whose other end is tightened on the rod (10) close to the movable contact (9).
  • a switch tab (14) comprises a handle (15) extending parallel to the end of the fixed upstream contact (1) from the end of the bellows (13), which it touches, up to the free end ( 5) of the main movable contact (3), and an enlarged end, spatula-shaped (16), extending from the handle (15) perpendicular to it towards this free end (5) at a short distance from it.
  • the rocker (12) also comprises two portions (17, 18) forming an angle between them, the first of which, extending in front of the end of the casing (7), bears the articulation (11), a pin for attaching a spring (22) stretched between the rocker (12) and a point (23) of a fixed structure (19) of the switch, and a light (20) in which slides an axis (21) also belonging to the fixed structure (19); the second portion (18) extends in front of the switching tab (14), and their free ends are approximately aligned perpendicularly to the plane of the figure and the main circuit, in the state of closure of the light bulb. empty (6).
  • the switching tab (14) and the rocker (22) may be in frictional contact or not.
  • the opening of the electric circuit is effected by the rotation of the main movable contact (3) by a handle not shown, and the recovery with the upstream fixed contact (1) gradually ceases.
  • the main movable contact (3) reaches the end of the balance (12) before, so that the electric current is directed gradually through the shunt occupied by the vacuum bulb (6), which avoids the creation electric arc between the contacts (1, 3).
  • the electrical conduction is effected by contacts (8, 9), the rod (10), and the balance (12) if all the parts are conductive; it can also be effected through the contacts (8 and 9), the bellows (13) which must then be conductive, and the switching tab (14) if it rubs on the balance (12) or the movable contact principal (3).
  • the stage of figure 3 represents the opening of the switch: the main movable contact (3) is completely separated from the upstream fixed contact (1), and it has started to push back the balance (12), which is nevertheless retained at its opposite end by the spring (22), so that it tilts about the axis (21).
  • the rod (10) is pulled out and separates the movable contact (9) from the fixed contact (8).
  • the electric current is then cut in the vacuum bulb (6).
  • the end of the rocker (12) escapes from the main movable contact (3) ( figure 4 ), and can come back in place by closing the vacuum bulb (1) ( figure 5 ), the circuit remaining open.
  • the figure 7 illustrates the reclosing of the circuit.
  • the main movable contact (3) is brought back in a reverse movement, passes in front of the switching tab (14) by rubbing on it or not and intercepts the end of the beam (12) by rotating it in the opposite direction.
  • the contacts (8, 9) touch, the rod (10) however remains motionless and the rotation of the balance (12) continues around the articulation (11), which remains stationary.
  • the spring (22) is then stretched, and the rocker (12) moves in front of the axis (21), which slides in the oblong slot (20). This continues until the balance (12) escapes the interception of the free end (5).
  • the switch then returns to the state of the figure 1 .
  • the switching tab (14) is absent, as are the axis (21), the light (20), and the hinge (11).
  • the rocker (12) remains united to the rod - now (24) - of the vacuum bulb (6), which consists of a conductive rod having a certain flexibility and which is embedded in the balance (12).
  • a spring (25) is positioned around the rod (24) inside the bellows (13) and recalls the contacts (8, 9) in the closed position.
  • a sleeve (26) is finally established outside the envelope (7) of the vacuum bulb (6), around the rod (24) and stops at a short distance from the balance (12).
  • the opening of the circuit begins as before by a rotation of the main movable contact (3) ( figure 9 ), which is intercepted by the free end of the balance (12); the rocker (12) is moved by pulling the rod (24) against the spring (25), bending it somewhat because of the rotation caused by the main movable contact (3), and a pivot point (27) eventually appears by contact of one end of the beam (12) with a portion of the sleeve (26). But the balance (12) returns in place thanks to the elasticity of the rod (24) of the spring (25) when the main movable contact (3) has exceeded.
  • the reclosing of the circuit is illustrated in the figure 10 the main movable contact (3) tilts the rocker (12) in the opposite direction, again producing a bending of the rod (24) in the opposite direction, and another pivot point (28) is formed between the balance (12) and the sleeve (26) opposite the point (27) above on the sleeve (26).
  • the contacts (8, 9) can be slightly separated.
  • the main movable contact - now (30) - is movable in translation and rubs on the downstream fixed contact (29) during its displacement.
  • the vacuum bulb (6) and the control device are approximately identical to the first embodiment, except that the ends of the balance - now (31) - and the switching tab - now (32) - have proportions modified to take account of the interception with the main movable contact (30): it extends parallel to the rod (10), moves in this direction, and intercepts the balance (31) and the switching tab (32) by a projection (33) which it carries.
  • the figure 12 illustrates the beginning of the opening of the circuit.
  • One end (34) of the main movable contact (30) gradually leaves a flange (35) electrically connected to the upstream fixed contact (1), while the projection (33) slides against the end of the switching tab (32). ) and gradually transfers the current into the branch of the vacuum interrupter (6).
  • the figure 13 illustrates the disconnection of the main circuit and the opening of the vacuum interrupter which follows soon after, the projection (33) pushing the end of the pendulum (31).
  • the rocker (31) has been thus turned to escape the projection (33) and has returned to its position ( figure 14 ), or, ( figure 15 ) on the contrary not returned completely in place but keeps the contacts (8 and 9) open, thanks to a friction between him and the switching tab (32).
  • the main movable contact (30) rotates the balance (31) in the other direction and therefore forces, as in the first embodiment, a movement of the axis (21) in the light (20) consecutive tilting the balance (31) about the axis (30), the contacts (8 and 9) being kept closed, by stretching the spring (22).
  • the switch returns to the state of the figure 11 .

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP11354078.5A 2011-01-25 2011-12-13 Dispositif de coupure moyenne tension comprenant une ampoule à vide Active EP2479769B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1150576A FR2970809B1 (fr) 2011-01-25 2011-01-25 Dispositif de coupure moyenne tension comprenant une ampoule a vide

Publications (2)

Publication Number Publication Date
EP2479769A1 EP2479769A1 (fr) 2012-07-25
EP2479769B1 true EP2479769B1 (fr) 2014-10-22

Family

ID=44515148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11354078.5A Active EP2479769B1 (fr) 2011-01-25 2011-12-13 Dispositif de coupure moyenne tension comprenant une ampoule à vide

Country Status (8)

Country Link
US (1) US9058948B2 (ru)
EP (1) EP2479769B1 (ru)
CN (1) CN102623234B (ru)
AU (1) AU2012200370B2 (ru)
BR (1) BR102012001647B1 (ru)
ES (1) ES2525080T3 (ru)
FR (1) FR2970809B1 (ru)
RU (1) RU2578174C2 (ru)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6136597B2 (ja) * 2013-06-06 2017-05-31 株式会社明電舎 封止形リレー
IN2013KO01351A (ru) 2013-11-29 2015-06-05 Schneider Electric Ind Sas
IN2014KO00434A (ru) 2014-04-03 2015-10-09 Schneider Electric Ind Sas
EP3046128B1 (en) 2015-01-15 2018-07-04 Schneider Electric Industries SAS Shunt breaking system
EP3046129B1 (en) 2015-01-15 2019-09-11 Schneider Electric Industries SAS Shunt breaking system
FR3034251B1 (fr) * 2015-03-27 2017-04-28 Schneider Electric Ind Sas Interrupteur d'un reseau triphase
US9679724B2 (en) * 2015-07-13 2017-06-13 Eaton Corporation Component for electric power system, and contact assembly and open air arcing elimination method therefor
CN105185648B (zh) * 2015-09-28 2018-01-09 北京京东方真空电器有限责任公司 一种真空开关管
DE102019216663B4 (de) * 2019-10-29 2023-02-02 Siemens Aktiengesellschaft Vakuumschaltvorrichtung für eine Schaltung mit Haupt- und Nebenstrompfad
ES2888700B2 (es) 2020-06-25 2022-05-18 Ormazabal Corporate Tech A I E Interruptor de corte en carga o de corrientes de cortocircuito
FR3121267A1 (fr) 2021-03-24 2022-09-30 Schneider Electric Industries Sas Système de coupure d’un appareil électrique
FR3123496A1 (fr) * 2021-05-25 2022-12-02 Schneider Electric Industries Sas Dispositif de coupure d’un appareil électrique
ES1275577Y (es) 2021-07-13 2021-10-26 Ormazabal Corporate Tech A I E Interruptor de corte en carga o de corrientes de cortocircuito y equipo eléctrico que incorpora dicho interruptor
EP4276872A1 (en) * 2022-05-12 2023-11-15 ABB Schweiz AG A medium voltage switching apparatus
JP7362007B1 (ja) 2023-03-10 2023-10-16 三菱電機株式会社 開閉装置

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DE3832493A1 (de) 1988-09-22 1990-03-29 Siemens Ag Vakuumschaltroehre, eine solche schaltroehre enthaltender lasttrennschalter und verfahren zum betrieb eines solchen lasttrennschalters
FR2655766B1 (fr) * 1989-12-11 1993-09-03 Merlin Gerin Disjoncteur hybride moyenne tension.
FR2675304B1 (fr) * 1991-04-10 1994-04-08 Gec Alsthom Energie Inc Sectionneur a pouvoir de coupure ameliore, notamment sectionneur a ouverture verticale.
FR2682807B1 (fr) * 1991-10-17 1997-01-24 Merlin Gerin Disjoncteur electrique a deux cartouches a vide en serie.
FR2682808B1 (fr) * 1991-10-17 1997-01-24 Merlin Gerin Disjoncteur hybride a bobine de soufflage axial.
FR2721434B1 (fr) 1994-06-20 1996-08-02 Schneider Electric Sa Ampoule sous vide, notamment pour disjoncteur ou interrupteur électrique moyenne tension et interrupteur intégrant une telle ampoule.
US7534976B2 (en) * 2006-06-26 2009-05-19 Fci Americas Technology, Inc. Vacuum recloser
EP2034503B1 (en) * 2007-09-05 2014-11-05 ABB Technology AG Low-voltage, medium-voltage or high-voltage switchgear assembly having a short-circuiting system
FR2937786B1 (fr) 2008-10-29 2010-12-24 Areva T & D Sa Interrupteur de courant sur une ligne electrique comprenant une ampoule a vide
FR2946180B1 (fr) * 2009-05-26 2012-12-14 Areva T & D Sa Dispositif d'accrochage et de verrouillage interne a un interrupteur ou a un disjoncteur.

Also Published As

Publication number Publication date
CN102623234B (zh) 2015-12-16
FR2970809A1 (fr) 2012-07-27
RU2578174C2 (ru) 2016-03-20
US20120187090A1 (en) 2012-07-26
EP2479769A1 (fr) 2012-07-25
AU2012200370B2 (en) 2014-05-01
CN102623234A (zh) 2012-08-01
BR102012001647B1 (pt) 2020-05-19
US9058948B2 (en) 2015-06-16
ES2525080T3 (es) 2014-12-17
BR102012001647A2 (pt) 2015-07-21
FR2970809B1 (fr) 2013-02-22
RU2012102335A (ru) 2013-07-27
AU2012200370A1 (en) 2012-08-09

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