EP3046128B1 - Nebenschluss Unterbrechersystem - Google Patents

Nebenschluss Unterbrechersystem Download PDF

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Publication number
EP3046128B1
EP3046128B1 EP15305034.9A EP15305034A EP3046128B1 EP 3046128 B1 EP3046128 B1 EP 3046128B1 EP 15305034 A EP15305034 A EP 15305034A EP 3046128 B1 EP3046128 B1 EP 3046128B1
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EP
European Patent Office
Prior art keywords
contact
vacuum
moving contact
lever
pallet
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EP15305034.9A
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English (en)
French (fr)
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EP3046128A1 (de
Inventor
Bhushan B. Kumbalwar
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Priority to EP15305034.9A priority Critical patent/EP3046128B1/de
Priority to ES15305034.9T priority patent/ES2687030T3/es
Publication of EP3046128A1 publication Critical patent/EP3046128A1/de
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    • 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
    • H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
    • 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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers

Definitions

  • the present invention relates to a vacuum interrupter device designed to break an electrical circuit in a medium voltage switch disconnector, incorporating such a device.
  • an electrical switch disconnector is designed to provide a making or breaking of specified currents.
  • it mainly comprises a sealed enclosure filled with a high dielectric strength gas, in which a pair of main contacts are arranged, one stationary contact and the other movable, connected to an operating drive.
  • a pair of arcing contact arc sometimes electrically connected in parallel to the main contacts, such as to open the arcing contacts after the main contacts during breaking, and to close the arcing contacts before the main contacts during making.
  • EP2182536 describes an application for a switch disconnector with rotary motion of the contacts.
  • the linkage operating the vacuum interrupter ( Figure 1 ) has a sliding joint 10 between the lever 7 and the moving contact 5 of the vacuum interrupter.
  • the end positions and movement (velocity) of moving contact of vacuum interrupter depends on the length of ratios of lever 7 i.e. distance between the pivot 11 and its free end 9 to the distance between the pivot 11 to the sliding joint 10.
  • EP2479769 discloses an application for a switch disconnector having moving contacts with rotary and sliding or linear motion.
  • the lever 18, interacting with the main moving contact is pivoted at two positions 11 and 21.
  • This lever articulates/rotates about different pivots during opening and closing of the switch disconnector.
  • the lever 18 rotates about pivot 21.
  • This lever has an oblong slot which allows it to rotate about pivot 11 during closing of switch disconnector.
  • the linkage operating the vacuum interrupter has a lever 18 which is pivoted about the pin 21.
  • This lever is connected to the moving contact of vacuum interrupter by a hinge 11,
  • the end positions and movement (velocity) of moving contact of vacuum interrupter depends upon the length ratios of the lever 18 i.e. distance between the pivot 11 and its free end to the distance between pivot 11 to the pivot pin 21.
  • Prior art DE10047032 relates to an application for a switch disconnector having moving contacts with rotary motion ( figure 5 ).
  • Secondary circuit vacuum interrupter and its operating linkages
  • Cam 12 operates a pin 11 which is rigidly connected to the moving contact of the vacuum interrupter.
  • the secondary circuit along with the vacuum interrupter is mounted on the moving contact which increases the mass of the moving contact and shall demand more energy to move the contacts of switch disconnector.
  • US 2010/102035 A1 discloses a vacuum circuit interrupter device comprising a primary circuit consisting of a stationary contact and a primary moving contact, said stationary contact being connected to an incoming busbar and said primary moving contact being connected to an outgoing busbar; a secondary circuit consisting of a vacuum interrupter electrically connected to the stationary contact on a terminal and a secondary moving contact connectable to the primary moving contact through a pallet contact and a flexible connection; an operating linkage consisting of a lever for moving the vacuum interrupter between a closed circuit position in electric communication with the stationary contact and an open circuit position.
  • the present invention provides for a vacuum circuit interrupter device, as defined in the independent claim, for a medium voltage switching apparatus such that the device is designed to generate a parallel or secondary circuit within the said apparatus where the operating linkages included in the said device allows the vacuum interrupter to be placed at any desirable position based on the available space within the said switching device. Further embodiments are defined in the dependent claims.
  • the present invention is intended to function as a parallel or secondary circuit for an existing switch disconnector. Considering the size of existing enclosures, vacuum interrupter has to be positioned in location such that the new operating linkage is rendered suitable to transfer the motion to the vacuum interrupter in less space or rather available space.
  • a vacuum circuit interrupter device (30) of the present invention comprising a primary circuit (21) consisting of stationary contact (3) and moving contact (19) and a moving contact deflector (1) rigidly connected thereto; a secondary circuit (22) consisting of a vacuum interrupter (6) electrically connected to the stationary contact (3) on terminal (5) by a flexible connection (4) and a moving contact (7) connected to moving contact deflector (1) through a pallet contact (2) and a flexible connection (18) and an operating linkage comprising of lever (10) and a profiled cam (14) for moving the vacuum interrupter (6) between a closed circuit position in electric communication with the stationary contact (3) and an open circuit position.
  • a primary circuit consisting of stationary contact (3) and moving contact (19) and a moving contact deflector (1) rigidly connected thereto
  • a secondary circuit (22) consisting of a vacuum interrupter (6) electrically connected to the stationary contact (3) on terminal (5) by a flexible connection (4) and a moving contact (7) connected to moving contact deflector (1) through a pallet contact (2) and a flexible connection (18) and
  • the linkage is defined by the transfer of movement of moving contact (19) to the vacuum interrupter (6) with required amount of displacement and velocity.
  • the lever (10) is rotatable at pivot (11) preferably around the middle of its length for connecting the cam (14) at lever first end (23) and connected to guide (8) at lever second end (33) ( figure 7 ).
  • a collar (9) is connected to guide (8) at collar first end and the moving contact (7) of vacuum interrupter (6) at collar second end.
  • the guide (8) in conjunction with the collar (9) is configured to travel a linear path defining a travel path for moving contact (7).
  • the pallet contact (2) is rigidly mounted on first end of pallet base (17) configured to be engaged with moving contact deflector (1).
  • a pallet lever (16) is rotatably connected at its one end at pivot (13) with pallet base and second end configured to rigidly connect with cam (14) on its other end.
  • the pallet base (17) is biased by a torsion spring placed at pivot (13) against the pallet lever (16).
  • the assembly (20) of pallet lever (16) cam (14) pallet base (17) and pallet contact (2) is pivoted around pivot (15).
  • the assembly (20) is biased by a torsion spring placed at pivot (15) against stopper pin (12) configured to prevent the pallet lever (16) from clockwise rotation during closing of vacuum interrupter (6).
  • the moving contact deflector (1) has a special feature, having specific contour-for example in region (e) which interacts with the pallet contact (2) with specific radius as in region (d).
  • the pull force in vacuum interrupter (6) due to its vacuum helps to keep a positive contact between the collar (9) and the guide (8), guide (8) and the transfer lever (10) and also between the transfer lever (10) and the cam profile (14).
  • the present invention further discloses that the said linkage is defined by the transfer of movement of moving contact (19) to the vacuum interrupter (6) with required amount of displacement and velocity.
  • the profiled cam (14) is defined for regions (a) and (c) of uniform radius and region (b) with varying radius with respect to pivot (15) for providing stroke and velocity of movement to vacuum interrupter (6).
  • the ratio of displacement on profiled cam (14) and the moving contact (7) of vacuum interrupter (6) is dependent on ratio of distance between pivot (11) and point of interaction with cam (14) (L1) to the distance between the pivot (11) and point of interaction between the lever (10) and guide (8) (L2).
  • the vacuum circuit interrupter device of the present invention is of a medium voltage type suitable for placement in a medium voltage switching apparatus where the switch contact movement is either a linear or a rotary.
  • the profile of the lever (10) of the operating linkage is dependent on position of vacuum interrupter (6) in said switching apparatus. Whereas orientation of cam (14) is a factor of direction of placement of vacuum interrupter (6) and resultant profile of lever (10).
  • the device (30) of the present invention is designed to generate a parallel or secondary circuit in the said switch apparatus.
  • the operating drive of the present invention is designed to actuate the moving contact (19) takes four positions of opening position, separating position, disconnecting position and closing position. Referring to figure 6 and 14 which shows the close position of the switch, the current flows from the stationary contact (3) to the moving contact (19) through the primary circuit. The secondary circuit is inactive in this position. The vacuum interrupter (6) is closed.
  • the opening position is a position for connection between the moving contact deflector (1) and the pallet contact (2) when the moving contact (19) is electrically connected to the stationary contact (3) allow current to flow from stationary contact (3) to moving contact (19) through primary circuit (21) (3-19) and through the secondary circuit (22) (3-4-57-18-2-1-19).
  • the separating position is a position in which the moving contact (19) leaves the stationary contact (3) up to a distance for achieving a sufficient dielectric distance causing the primary circuit (21) (3-19) to become inactive and current to flow only through the secondary circuit (22) (3-4-57-18-2-1-19).
  • the lever (10) is articulated with region (b) of the cam (14) operating the vacuum interrupter (6) for breaking the current there within ( figure 16 ).
  • the current starts breaking in secondary circuit, i.e. inside the vacuum interrupter (6), instead of in the insulating medium of primary circuit.
  • the region (b) is articulated to achieve the desired stroke and velocity of the moving contact (7) of vacuum interrupter (6).
  • the disconnecting position is a position in which the lever (10) engages with cam portion (c) of constant radius preventing any further motion to be transferred to vacuum interrupter (6).
  • the closing position is a position in which the moving contact deflector (1) releasing the pallet contact (2), moving contact deflector continues to move upward and pallet contact moves downward with the help of assembly (20) and torsion spring at pivot 15. This renders the primary circuit (21) and secondary circuit (22) inactive.
  • the lever (10) passes from region (c) to (b) and finally to (a) closing the vacuum interrupter (6).
  • the moving contact deflector (1) engages with pallet base (17) causing the base (17) along with pallet contact (2) to rotate clockwise along pivot (13).
  • the moving contact deflector (1) on its downward movement causes moving contact (19) to engage with the stationary contact (3) closing the primary circuit (21).
  • the switch disconnector in RM6 Ring Main Unit has a linear contact movement and the new design for the secondary or parallel circuit is suitable considering its enclosure size.
  • Other breaker and switch disconnectors like Flusarc also have the potential to implement the above design.
  • the cam linkage can also be made suitable for a switch disconnector with rotary contacts as shown in figures 14-18 .
  • the input motion can be transferred in any direction by appropriately arranging the cam orientation and the transfer lever.
  • This provides the advantage of placing the vacuum interrupter as per space availability in a given switch disconnector.
  • change in stroke at the vacuum interrupter is possible by changing the pivot position to change the ratio of L1 to L2 of the transfer lever, or by changing the cam profile.
  • change in contact velocity of vacuum interrupter is possible by changing only the cam profile. Change in size of vacuum interrupter can be easily accommodated into the design.
  • the tulip fingers in moving contact of the existing switch disconnector is covered by a deflector to improve the dielectric behavior by hiding the sharp corners of the tulip fingers.
  • additional feature with a specific profile has been added to the deflector. The moving contact of the switch disconnector interacts with the secondary circuit through this feature of the deflector. This avoided any change in the contact system of the switch disconnector.
  • the gradient (g) of the profile of cam will define the velocity whereas rise (m) of the cam will define the amount of displacement of the moving contact of vacuum interrupter whereas ( figure 20 ).
  • the orientation of the cam profile will depend on the direction in which the vacuum interrupter is placed and the profile of the transfer lever (see figures 21-23 ).
  • the ratio of distance between the pivot and the point of interaction with cam (L1) to the distance between the pivot and the point of interaction between the transfer lever and the vacuum interrupter (L2) is also 1:1.
  • the profile of the transfer lever will depend on the position of the vacuum interrupter, (see figures 24-27 ).
  • the vacuum interrupter of the present invention is designed to open at an average speed greater than 0.8m/s for the first 4mm and not more than 1.6m/s. Further, the vacuum interrupter remains open for at least 16ms during each breaking operation.
  • additional torsional springs can be added at the pivot 11 to avoid the bounces at the interactions between the lever (10) and the cam (14), and between the lever (10) and the collar (9).
  • the interacting surface between cam (14) and lever (10) can be modified to have a connection like a groove-pin connection.
  • the contoured groove with the same profile of the cam (14) rigidly connected to pallet lever (16) and pin connected to the transfer lever (10).
  • the interaction between the lever (10) and guide (8) can be eliminated and replaced by a slot -pin connection.
  • the slot being provided in lever (10) and pin connected to the guide (8).
  • the switch disconnector of the present invention can have a rotary contact motion.
  • the special feature on the moving contact deflector may be a part of one of the moving contact fingers with appropriate interaction with the pallet contact of the secondary circuit. The present invention is added as a subassembly to the existing switch disconnector.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (15)

  1. Vakuum-Schaltkreisunterbrechervorrichtung (30), umfassend einen primären Schaltkreis (21), einen sekundären Schaltkreis (22) und ein Betätigungsgestänge, wobei
    (a) der primäre Schaltkreis (21) einen stationären Kontakt (3) und einen primären Bewegungskontakt (19) und ein damit starr verbundenes Bewegungskontakt-Ablenkelement (1) umfasst, wobei der stationäre Kontakt (3) mit einer ankommenden Stromschiene verbunden ist und der primäre Bewegungskontakt (19) mit einer abgehenden Stromschiene verbunden ist;
    (b) der sekundäre Schaltkreis (22) einen Vakuumunterbrecher (6), der mit dem stationären Kontakt (3) durch eine erste flexible Verbindung (4) an einem Anschluss (5) elektrisch verbunden ist, und einen sekundären Bewegungskontakt (7) umfasst, der mit dem Bewegungskontakt-Ablenkelement (1) durch einen Palettenkontakt (2) und eine zweite flexible Verbindung (18) verbindbar ist;
    (c) das Betätigungsgestänge einen Hebel (10) und einen profilierten Nocken (14) zum Bewegen des Vakuumunterbrechers (6) zwischen einer geschlossenen Schaltstellung in elektrischer Verbindung mit dem stationären Kontakt (3) und einer offenen Schaltstellung umfasst.
  2. Vakuum-Schaltkreisunterbrechervorrichtung nach Anspruch 1, wobei das Betätigungsgestänge durch das Übertragen einer Bewegung des primären Bewegungskontakts (19) an den Vakuumunterbrecher (6) mit einem notwendigen Betrag an Verschiebung und Geschwindigkeit definiert ist.
  3. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach Anspruch 1, wobei der Hebel (10) an einem ersten Drehpunkt (11) vorzugsweise etwa in der Mitte seiner Länge drehbar ist, um den Nocken (14) an einem ersten Hebelende (23) zu verbinden, und mit einer Führung (8) an einem zweiten Hebelende (33) verbunden ist, wobei das Profil des Hebels (10) von der Position des Vakuumunterbrechers (6) in einer Schaltvorrichtung abhängig ist.
  4. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach einem der vorstehenden Ansprüche, wobei ein Kragen (9) mit der Führung (8) an einem ersten Kragenende und der sekundäre Bewegungskontakt (7) des Vakuumunterbrechers (6) an einem zweiten Kragenende verbunden ist, wobei die Führung (8), die in Verbindung mit dem Kragen (9) steht, ausgestaltet ist, um auf einer linearen Strecke zu laufen, die eine Laufstrecke für den sekundären Bewegungskontakt (7) definiert.
  5. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach einem der vorstehenden Ansprüche, wobei der Palettenkontakt (2) an einem ersten Ende einer Palettenbasis (17) starr montiert ist, die zum Eingriff mit dem Bewegungskontakt-Ablenkelement (1) ausgestaltet ist.
  6. Vakuum-Schaltungsunterbrechervorrichtung (30) nach einem der vorstehenden Ansprüche, wobei ein Palettenhebel (16) an seinem einen Ende an einem zweiten Drehpunkt (13) mit der Palettenbasis (17) drehbar verbunden ist und an seinem anderen Ende mit einem zweiten Ende, das zu einer starren Verbindung mit dem Nocken (14) ausgestaltet ist, wobei die Palettenbasis (17) durch eine Torsionsfeder gegen den Palettenhebel (16) vorgespannt ist.
  7. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach einem der vorstehenden Ansprüche, wobei eine Anordnung (20) aus dem Palettenhebel (16), dem Nocken (14), der Palettenbasis (17) und dem Palettenkontakt (2) um einen dritten Drehpunkt (15) herum drehbar gelagert ist, wobei die Anordnung (20) durch eine Torsionsfeder, die an dem dritten Drehpunkt (15) platziert ist, gegen einen Stopperstift (12) vorgespannt wird, der ausgestaltet ist, um eine Drehung des Palettenhebels (16) im Uhrzeigersinn während des Schließens des Vakuumunterbrechers (6) zu verhindern.
  8. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach einem der vorstehenden Ansprüche, wobei der profilierte Nocken (14) für eine erste Region (a) und eine zweite Region (c) mit einheitlichem Radius und für eine dritte Region (b) mit veränderlichem Radius mit Bezug auf den dritten Drehpunkt (15) definiert ist, um einen Hub und eine Geschwindigkeit einer Bewegung des Vakuumunterbrechers (6) zu erhöhen, wobei die Orientierung des Nockens (14) ein Faktor einer Richtung der Platzierung des Vakuumunterbrechers (6) und eines resultierenden Profils des Hebels (10) ist.
  9. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach einem der vorstehenden Ansprüche, wobei ein Verhältnis einer Verschiebung an dem profilierten Nocken (14) und dem sekundären Bewegungskontakt (7) des Vakuumunterbrechers (6) von dem Verhältnis einer Distanz (L1) zwischen dem ersten Drehpunkt (11) und einem Interaktionspunkt mit dem Nocken (14) zu einer Distanz (L2) zwischen dem ersten Drehpunkt (11) und einem Interaktionspunkt zwischen dem Hebel (10) und der Führung (8) abhängt.
  10. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach einem der vorstehenden Ansprüche, mit vier Positionen, einer Öffnungsposition, einer Unterbrechungsposition, einer Trennposition und einer Schließposition.
  11. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach Anspruch 10, wobei die Öffnungsposition eine Position zur Verbindung zwischen dem Bewegungskontakt-Ablenkelement (1) und dem Palettenkontakt (2) ist, wenn der primäre Bewegungskontakt (19) mit dem stationären Kontakt (3) elektrisch verbunden ist, um zu ermöglichen, dass ein Strom von dem stationären Kontakt (3) zu dem primären Bewegungskontakt (19) durch einen primären Schaltkreis (21) und durch den sekundären Schaltkreis (22) fließt, und der Hebel (10), der mit der ersten Region (a) des Nockens (14) interagiert, keine Bewegung an den Vakuumunterbrecher (6) überträgt, was dazu führt, dass sich der Vakuumunterbrecher in einer geschlossenen Position befindet.
  12. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach Anspruch 10, wobei die Trennposition eine Position ist, in welcher der primäre Bewegungskontakt (19) den stationären Kontakt (3) bis hin zu einer Distanz verlässt, um eine ausreichende dielektrische Distanz zu erreichen, was bewirkt, dass der primäre Schaltkreis (21) inaktiv wird und Strom nur durch den sekundären Schaltkreis (22) hindurchfließt, wobei der Hebel (10) an der dritten Region (b) des Nockens (14) gelenkig gelagert ist, um den Vakuumunterbrecher (6) zum Unterbrechen des Stroms darin zu betreiben, wobei die dritte Region (b) gelenkig gelagert ist, um den gewünschten Hub und die gewünschte Geschwindigkeit des sekundären Bewegungskontakts (7) des Vakuumunterbrechers (6) zu erreichen.
  13. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach Anspruch 10, wobei die Unterbrechungsposition eine Position ist, in welcher der Hebel (10) mit dem zweiten Abschnitt (c) in Eingriff steht, was verhindert, dass irgendeine weitere Bewegung an den Vakuumunterbrecher (6) übertragen wird, die einen Eingriff zwischen dem Palettenkontakt (2) und dem Bewegungs-Ablenkelement (1) verursacht, um den Vakuumunterbrecher (6) offen zu halten, um eine solide Stromunterbrechung zu erhalten.
  14. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach Anspruch 10, wobei die Schließposition eine Position ist, in welcher das Bewegungskontakt-Ablenkelement (1) beim Freigeben des Palettenkontakts (2) den primären Schaltkreis (21) und den sekundären Schaltkreis (22) inaktiv stellt, wobei das Bewegungskontakt-Ablenkelement (1) mit einer Aufwärtsbewegung fortfährt, sich der Palettenkontakt (2) mit der Hilfe der Anordnung (20) und der Torsionsfeder am dritten Drehpunkt (15) nach unten bewegt, wobei der Hebel (10) von der zweiten Region (c) zu der dritten Region (b) und schließlich zu der ersten Region (a) wandert, wodurch der Vakuumunterbrecher (6) geschlossen wird.
  15. Vakuum-Schaltkreisunterbrechervorrichtung (30) nach Anspruch 14, wobei das Bewegungskontakt-Ablenkelement (1) auf seiner Abwärtstrajektorie mit der Palettenbasis (17) in Eingriff kommt, was veranlasst, dass sich die Basis (17) zusammen mit dem Palettenkontakt (2) um den zweiten Drehpunkt (13) im Uhrzeigersinn dreht, wobei das Bewegungskontakt-Ablenkelement (1) veranlasst, dass der primäre Bewegungskontakt (19) in Eingriff mit dem stationären Kontakt (3) kommt, wodurch der primäre Schaltkreis (21) geschlossen wird.
EP15305034.9A 2015-01-15 2015-01-15 Nebenschluss Unterbrechersystem Active EP3046128B1 (de)

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EP15305034.9A EP3046128B1 (de) 2015-01-15 2015-01-15 Nebenschluss Unterbrechersystem
ES15305034.9T ES2687030T3 (es) 2015-01-15 2015-01-15 Sistema de ruptura de derivación

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EP3046128A1 EP3046128A1 (de) 2016-07-20
EP3046128B1 true EP3046128B1 (de) 2018-07-04

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CN109659190B (zh) * 2019-02-19 2024-04-19 宁波天安智能电网科技股份有限公司 一种内置隔离的真空灭弧室装置及真空断路器
CN113838687A (zh) * 2020-06-24 2021-12-24 施耐德电器工业公司 具有辅助分流组件的分断单元和双电源转换开关
FR3121267A1 (fr) 2021-03-24 2022-09-30 Schneider Electric Industries Sas Système de coupure d’un appareil électrique

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EP3046128A1 (de) 2016-07-20

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