EP3982386B1 - Optimierter stromnetzschalter - Google Patents

Optimierter stromnetzschalter

Info

Publication number
EP3982386B1
EP3982386B1 EP21197091.8A EP21197091A EP3982386B1 EP 3982386 B1 EP3982386 B1 EP 3982386B1 EP 21197091 A EP21197091 A EP 21197091A EP 3982386 B1 EP3982386 B1 EP 3982386B1
Authority
EP
European Patent Office
Prior art keywords
switch element
switch
contact
power line
line segment
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
EP21197091.8A
Other languages
English (en)
French (fr)
Other versions
EP3982386A1 (de
Inventor
Romain Maladen
Jérôme DOUCHIN
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 EP3982386A1 publication Critical patent/EP3982386A1/de
Application granted granted Critical
Publication of EP3982386B1 publication Critical patent/EP3982386B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H9/386—Arcing contact pivots relative to the fixed contact assembly
    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • 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
    • H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/01—Spiral spring

Definitions

  • This disclosure falls within the domain of current switches on an electrical line or cable.
  • a high- or medium-voltage power line is commonly equipped with a switch.
  • a switch Such a power line is designed to transmit current through a distribution network, from a power source to the consumer.
  • the switch allows the current flowing through the line to be interrupted or restored by opening or closing the circuit.
  • the switch can be used to manage the flow of electricity on the line. In conjunction with a fuse, it can also eliminate a malfunction in the network, such as a short circuit.
  • the switch comprises two mutually movable contacts between a closed position, corresponding to the line being closed, and a closed position, corresponding to the line being open.
  • the two contacts are separated by an insulating medium to extinguish any electric arc that may occur when the contacts separate.
  • the insulating medium is commonly sulfur hexafluoride (SF6).
  • SF6 sulfur hexafluoride
  • this gas has the disadvantage of being a greenhouse gas, the use of which is extremely harmful to the environment.
  • WO2020/025242 A1 discloses a current switch arranged between a first portion of power line and a second portion of power line.
  • This disclosure aims to propose a switch that allows current to be cut off in relatively high voltage lines without the aforementioned drawbacks.
  • the elastic force applied to the second switching element allows it to move in the opposite direction to the first element during contact separation.
  • This elastic force contributes to rapid contact separation and extinguishes the electric arc. Consequently, a vacuum tube is no longer required, while maintaining high current-interrupting performance.
  • the switch requires few moving parts for operation and can be easily installed between two sections of the line.
  • FIG 10 illustrates a switch mounted on a medium- or high-voltage power line.
  • medium voltage and “high voltage” are used in their usual sense, namely that “medium voltage” refers to a voltage greater than 1,000 volts AC and 1,500 volts DC but not exceeding 52,000 volts AC and 75,000 volts DC, while “high voltage” refers to a voltage strictly greater than 52,000 volts AC and 75,000 volts DC.
  • Such a power line is designed to transmit current in a distribution network, from a voltage source 30 to a point of consumption 32.
  • the point of consumption 32 could, for example, be a dwelling or an industrial plant.
  • switch 10 is mounted between a first section 12 of the line and a second section 14 of the line.
  • the first section 12 runs back to the voltage source 30, and the second section 14 extends to the point of consumption 32.
  • the second section 14 could run back to the voltage source 30, and the first section 12 could extend to the point of consumption 32.
  • Switch 10 can close the line, allowing current to flow between the two sections 12 and 14 of the line.
  • Switch 10 can also open the line, interrupting the current flow between the two sections 12 and 14 of the line.
  • the switch 10 essentially comprises a first switch element 16 and a second switch element 18, both made of electrically conductive material.
  • the first switch element 16 is movablely mounted on the first section 12 of the line.
  • the first switch element 16 can then assume a closed position and an open position. In the closed position, the first switch element 16 connects to the second section 14 of the line.
  • the line is closed, and current can flow through the first switch element 16 to to join the second section 14 of the line.
  • the first switch element 16 Conversely, in the open position, the first switch element 16 is separated from the second section 14 of the line.
  • the line is open, and the current flow between the first and second sections 12, 14 of the line is interrupted.
  • a separation stroke corresponds to the transition of the first switch element 16 from the closed position to the open position.
  • a closing stroke corresponds to the transition of the first switch element 16 from the open position to the closed position.
  • the first switch element 16 is mounted here to rotate about a pivot axis A.
  • the axis A is substantially perpendicular to the general extension plane of the first switch element 16.
  • a separation stroke here corresponds to a rotation of the first switch element 16 about the axis A.
  • a closing stroke here corresponds to a rotation of the first switch element 16 about the axis A, in the opposite direction to the separation stroke.
  • the first switch element 16 can be controlled by an actuator 34.
  • the actuator 34 can in particular control the opening of the line when a malfunction is detected on the network or when an intervention must be carried out on the line.
  • the first switch element 16 includes a main contact 20 and a secondary contact 22.
  • the main contact 20 extends between the first and second sections 12 and 14 of the line to make contact with the second section 14 of the line.
  • the cross-section of the main contact 20 is adapted to fit onto the second section 14 of the line. Furthermore, the cross-sectional area of the main contact 20 is sufficient to support a continuous current flow. Thus, the main contact 20 forms a primary current path between sections 12 and 14 of the line.
  • the secondary contact 22 is integral with the primary contact 20.
  • the secondary contact 22 extends parallel to the primary contact 20 from an end 22b mounted on the first section 12 of the line to a free end 22c.
  • the free end 22c of the secondary contact 22 is intended to apply
  • the second switch element 18 is involved in the separation and closing strokes. When the secondary contact 22 touches the second switch element 18, the secondary contact 22 and the second switch element 18 form a secondary current path between the sections 12 and 14 of the line. This secondary current path increases the breaking capacity of an electric arc formed at the separation of the main contact 20 and the second section of the line 14 during the separation stroke.
  • the free end 22c of the secondary contact 22 has a first cam profile 22a to actuate the second switch element 18 by cam action during the opening stroke.
  • the free end 22c also includes a second cam profile 22d to move the second switch element 18 by cam action during the closing stroke.
  • the second cam profile 22d may, in particular, be made of an electrically insulating material. The insulation prevents current from flowing through the secondary current path during the closing stroke, thus protecting the auxiliary contact 22 from a short circuit when the line is closed.
  • the second switch element 18 is movably mounted on the second section 14 of the line.
  • the second switch element 18 extends from the second section 14 of the line to the vicinity of the free end 22c of the secondary contact 22 of the first switch element 16.
  • the second switch element 18 obstructs the passage of the secondary contact 22, so that it is driven by the secondary contact 22 during the opening and closing strokes.
  • the second switch element 18 is mounted to rotate about a pivot axis X on the second section 14 of the line.
  • the axis X is parallel to the axis A of rotation of the first switch element 16.
  • the movement of the second switch element 18 then corresponds to a rotation of the second switch element 18 about the axis X.
  • the second switch element 18 is driven by the secondary contact 22 of the first element switch 16 corresponds to a rotation in the opposite direction to the rotation of the first switch element 16.
  • the second switch element 18 is attached to a actuating element 24.
  • the actuating element 24 is in the form of a spring.
  • the spring 24 can be, in particular, a compression spring or a torsion spring.
  • the spring 24 actuates the second switch element 18 towards a rest position, in which the second switch element 18 is oriented towards the first portion 12 of the line.
  • the drive of the second switch element 18 by the secondary contact 22 of the first switch element 16 acts against the spring 24, moving the second switch element 18 out of the rest position.
  • the spring 24 returns the second switch element 18 to the rest position.
  • the contacts 16 and 18 then move in opposite directions.
  • the relative speeds of the second switch element 18 and the first switch element 16 make it possible to increase the breaking power of an electric arc 28.
  • the electric arc 28 is formed in particular between the second switch element 18 and the secondary contact 22 of the first switch element 16 during a separation stroke.
  • the second switch element 18 here comprises a blade 19 and a pawl 23.
  • the blade 19 extends in a plane substantially normal to the X axis. The blade 19 is then parallel to the secondary contact 22 of the first switch element 16. The blade 19 extends between an end 19a in the vicinity of the axis A and a free end 19b in the vicinity of the free end 22c of the secondary contact 22 of the first switch element 16.
  • the pin 23 of the blade 19 is located in the vicinity of the free end 19b of the blade 19.
  • the pin 23 extends perpendicularly to the blade 19, in the direction of the secondary contact 22 of the first switch element 16.
  • the pin 23 is intended to cooperate with the first and second cam edges 22a, 22d provided on the end 22c of the auxiliary contact 22 of the first switch element 16.
  • a portion of the pin 23, intended to make contact with the cam edge 22d of the auxiliary contact 22, may be made of an electrically insulating material. This insulation prevents current from flowing through the secondary current path during the closing stroke.
  • the pin 23 may not contain any electrically insulating material. In this case, insulation can be provided by the cam edge 22d of the secondary contact 22.
  • the second switch element 18 and the secondary contact 22 of the first switch element 16 can be arranged between two panels of insulating material 26, for example, plastic, in particular polyoxymethylene (POM) or polytetrafluoroethylene (PTFE). This improves the interruption of the arc 28 formed at the separation of contacts 16, 18.
  • plastic in particular polyoxymethylene (POM) or polytetrafluoroethylene (PTFE).
  • switch 10 The operation of switch 10 is then described in more detail.
  • the first switch element 16 is in the closed position.
  • the line is closed.
  • the main contact 20 of the first switch element 16 connects the first section 12 of the line and the second section 14 of the line.
  • Current can reach the second section 14 of the line via the main current path.
  • the second switch element 18 is elastically forced towards its rest position. The second switch element 18 is then forced towards the free end 22c of the blade 22 of the first switch element 16.
  • the separation stroke can be controlled by the actuator 34.
  • the first switch element 16 is here controlled in rotation around the axis A.
  • the first switch element 16 in particular the secondary contact 22, makes contact, then drives the second switch element 18.
  • the contact occurs when the cam edge 22a of the secondary contact 22 of the first switch element 16 touches the pin 23 of the second switch element 18.
  • the electric current can then reach the second portion 14 of the line via the secondary current path.
  • the contact occurs when the main contact 20 of the first element
  • the switch 16 always makes contact with the second section 14 of the line, so the electric current can also reach the second section 14 of the line via the main current path.
  • the current flow is distributed between the main and secondary paths according to the electrical resistances of each path. In this case, the cross-section of the main contact 20, being larger than that of the auxiliary contact 22 and the second switch element 18, carries the majority of the current through the main current path.
  • the drive of the second switch element 18 corresponds to a rotation of the second switch element 18 around the X axis.
  • the cam edge 22a of the secondary contact 22 of the first switch element 16 drives, by cam effect, the pin 23 of the second switch element 18.
  • the drive of the second switch element 18 acts against the elastic force 24 acting on the second switch element 18. Here, the spring 24 is compressed.
  • the primary contact 20 of the first switch element 16 is separated from the second portion 14 of the line.
  • An electric arc is formed between the primary contact 20 and the second portion 14 of the line.
  • the second switch element 18 remains in contact with the secondary contact 22 of the first switch element 16, so current can still reach the second portion 14 of the line via the secondary current path.
  • a current reversal to the secondary current path is caused by the electrical impedance of the arc.
  • the first switch element 16 continues to rotate around axis A while driving the second switch element 18.
  • the first switch element 16 is moved away from the second section 14 of the line. This distance increases the impedance of the electric arc between the main contact 20 and the second section 14 of the line. Combined with the electrical resistance provided by the secondary current path, the electric arc enters the main contact. 20 and the second portion 14 of the line can be cut without damaging the ends of the main contact 20 and the second portion 14 of the line.
  • the second switch element 18 is separated from the first switch element 16. Current can no longer reach the second portion 14 of the line.
  • the electric arc 28 is formed between the end 22c of the secondary contact 22 of the first switch element 16 and the end 19b of the blade 19 of the second switch element 18.
  • the first switch element 16 continues to rotate around axis A.
  • the second switch element 18 is returned to its rest position by the elastic force 24.
  • the restoring force of the spring 24 causes the second switch element 18 to rotate around axis X, in the opposite direction to the rotation of the first switch element 16.
  • the second switch element 18 moves away from the secondary contact 22 of the first switch element 16. More precisely, the end 19b of the blade 19 of the second switch element 18 and the end 22c of the secondary contact 22 of the first switch element 16 move apart.
  • the relative speeds of the second switch element 18 and the first switch element 16 increase the breaking capacity and thus rapidly extinguish the electric arc 28.
  • the line is open.
  • the first switch element 16 is at a distance from the second portion 14 of the line.
  • the second switch element 18 is in the rest position.
  • the closing stroke can also be controlled by the actuator 34.
  • the first switch element 16 is controlled in rotation around the axis A in the opposite direction to the separating stroke.
  • the first switch element 16 approaches the second portion 14 of the line.
  • the second switch element 18 is in the rest position, as seen in the Figure 10 .
  • the first switch element 16 continues to rotate around the axis A by making contact with, and then moving, the second switch element 18.
  • contact occurs when the cam edge 22d of the secondary contact 22 of the first switch element 16 touches the pin 23 of the second switch element 18.
  • the electrically insulating material of a part of the pin 23 and/or the cam edge 22d of the secondary contact 22 prevents the establishment of current through the secondary current path.
  • the movement of the second switch element 18 corresponds to a rotation of the second switch element 18 around the X axis.
  • the cam edge 22d of the blade 22 of the first switch element 16 drives, by cam action, the pin 23 of the second switch element 18.
  • the secondary contact 22 of the first switch element 16 can then approach the second portion 14 of the line without being blocked by the second switch element 18.
  • the main contact 20 of the first switch element 16 touches the second section 14 of the line. Current can again reach the second section 14 of the line via the main current path.
  • the first switch element 16 releases the second switch element 18.
  • the second switch element 18 is returned to its rest position by the elastic force 24.
  • the line then returns to the closed position.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Tumbler Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (12)

  1. Stromschalter (10), welcher zwischen einem ersten Abschnitt (12) einer elektrischen Leitung und einem zweiten Abschnitt (14) einer elektrischen Leitung angeordnet ist, umfassend:
    - ein erstes Schalterelement (16), das einen Hauptkontakt (20) und einen mit dem Hauptkontakt (20) fest verbundenen Sekundärkontakt (22) umfasst und beweglich am ersten Abschnitt (12) der elektrischen Leitung angebracht ist, um einem Trennungsweg zwischen einer geschlossenen Position und einer geöffneten Position zu folgen, wobei der Hauptkontakt (20) dafür angeordnet ist:
    - sich mit dem zweiten Abschnitt (14) der elektrischen Leitung in Kontakt zu befinden, wenn sich das erste Schalterelement (16) zwischen der geschlossenen Position und einem Zwischenöffnungszustand zwischen der geschlossenen Position und der geöffneten Position befindet,
    - sich nicht mehr mit dem zweiten Abschnitt (14) der elektrischen Leitung in Kontakt zu befinden, wenn sich das erste Schalterelement (16) zwischen dem Zwischenöffnungszustand und der geöffneten Position befindet; und
    - ein zweites Schalterelement (18), das beweglich am zweiten Abschnitt (14) der elektrischen Leitung angebracht ist und durch eine elastische Beaufschlagung (24) in Richtung einer Ruheposition beaufschlagt wird;
    wobei der Sekundärkontakt (22) des ersten Schalterelements (16) dazu eingerichtet ist:
    - mit dem zweiten Schalterelement (18) zusammenzuwirken, um das zweite Schalterelement (18) entgegen der elastischen Beaufschlagung (24) in einem ersten Teil des Trennungsweges von der geschlossenen Position bis zu einem Freigabezustand zwischen dem Zwischenöffnungszustand und der geöffneten Position zu verlagern,
    - in einem zweiten Teil des Trennungsweges zwischen dem Freigabezustand und der geöffneten Position nicht auf das zweite Schalterelement (18) einzuwirken, so dass das zweite Schalterelement (18) dann durch die elastische Beaufschlagung (24) in die Ruheposition zurückgeholt wird;
    dadurch gekennzeichnet, dass das zweite Schalterelement (18) und der Sekundärkontakt (22) des ersten Schalterelements (16) zwischen zwei Platten aus Isoliermaterial (26) angeordnet sind.
  2. Schalter (10) nach Anspruch 1, wobei das zweite Schalterelement (18) um eine erste Schwenkachse (X) schwenkbar am zweiten Abschnitt (14) der Leitung angebracht ist.
  3. Schalter (10) nach Anspruch 1 oder Anspruch 2, wobei das erste Schalterelement (16) um eine zweite Schwenkachse (A) schwenkbar am ersten Abschnitt (12) der elektrischen Leitung angebracht ist.
  4. Schalter (10) nach den Ansprüchen 2 und 3, wobei die erste Schwenkachse (X) parallel zur zweiten Schwenkachse (A) ist.
  5. Schalter (10) nach Anspruch 4, wobei das zweite Schalterelement (18) ein Plättchen (19) umfasst, das sich entlang einer allgemeinen Ebene erstreckt, die im Wesentlichen senkrecht zur ersten Schwenkachse (X) ist, und einen Stift (23), der von dem Plättchen (19) parallel zur ersten Schwenkachse (X) vorsteht und dazu eingerichtet ist, mit dem Sekundärkontakt (22) des ersten Schalterelements (16) zusammenzuwirken.
  6. Schalter (10) nach Anspruch 5, wobei sich der Sekundärkontakt (22) des ersten Schalterelements (16) entlang einer allgemeinen Ebene erstreckt, die im Wesentlichen senkrecht zur ersten Schwenkachse (X) ist, wobei der Sekundärkontakt (22) einen ersten nockenförmigen Rand (22a) aufweist, der dazu eingerichtet ist, mit dem Stift (23) während des Trennungsweges durch Nockenwirkung zusammenzuwirken.
  7. Schalter (10) nach Anspruch 6, wobei sich das Plättchen (19) des zweiten Schalterelements (18) zwischen einem ersten Ende (19a), das der ersten Schwenkachse (X) benachbart ist, und einem freien zweiten Ende (19b) erstreckt, wobei der Stift (23) in der Nähe des zweiten Endes (19b) des Plättchens (19) angeordnet ist,
    und wobei sich der Sekundärkontakt (22) des ersten Schalterelements (16) zwischen einem ersten Ende (22b), das der zweiten Schwenkachse (A) benachbart ist, und einem freien zweiten Ende (22c) erstreckt, wobei der nockenförmige Rand (22a) in der Nähe des zweiten Endes (22c) des Sekundärkontakts (22) angeordnet ist.
  8. Schalter (10) nach Anspruch 7, wobei das erste Schalterelement (16) auch dazu eingerichtet ist, sich entlang eines Schließweges von der geöffneten Position zur geschlossenen Position zu verlagern,
    und wobei der Sekundärkontakt (22) einen zweiten nockenförmigen Rand (22d) aufweist, der dazu eingerichtet ist, mit dem Stift (23) während des Schließweges durch Nockenwirkung zusammenzuwirken, um das zweite Schalterelement (18) während des Passierens des Sekundärkontakts (22) zeitweilig von der Ruheposition zu entfernen.
  9. Schalter (10) nach Anspruch 8, wobei der zweite nockenförmige Rand (22d) und/oder ein Abschnitt des Stiftes (23), der dazu bestimmt ist, mit dem zweiten nockenförmigen Rand (22d) in Kontakt zu kommen, elektrisch isolierend sind.
  10. Schalter (10) nach einem der Ansprüche 7 bis 9, wobei sich die zwei elektrisch isolierenden Platten (26) senkrecht zur ersten Schwenkachse (X) erstrecken, wobei die zwei elektrisch isolierenden Platten (26) mindestens das zweite Ende (19b) des ersten Plättchens (19) und das zweite Ende (22c) des Sekundärkontakts (22) bedecken, wenn sich das erste Schalterelement (16) im Freigabezustand befindet.
  11. Schalter (10) nach einem der vorhergehenden Ansprüche, wobei das erste Schalterelement (16) von einem Aktuator (34) gesteuert wird.
  12. Schalter nach einem der vorhergehenden Ansprüche, wobei einer von dem ersten Abschnitt (12) und dem zweiten Abschnitt (14) der elektrischen Leitung mit einer Spannungsquelle (30) verbunden ist und der andere von dem ersten Abschnitt (12) und dem zweiten Abschnitt (14) der elektrischen Leitung sich zu einer Verbrauchsstelle (32) hin erstreckt.
EP21197091.8A 2020-10-07 2021-09-16 Optimierter stromnetzschalter Active EP3982386B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2010244A FR3114908A1 (fr) 2020-10-07 2020-10-07 Interrupteur de courant optimisé sur ligne électrique

Publications (2)

Publication Number Publication Date
EP3982386A1 EP3982386A1 (de) 2022-04-13
EP3982386B1 true EP3982386B1 (de) 2025-11-05

Family

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EP21197091.8A Active EP3982386B1 (de) 2020-10-07 2021-09-16 Optimierter stromnetzschalter

Country Status (4)

Country Link
US (1) US11482385B2 (de)
EP (1) EP3982386B1 (de)
CN (1) CN114400162A (de)
FR (1) FR3114908A1 (de)

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Publication number Priority date Publication date Assignee Title
US11761995B2 (en) * 2019-04-29 2023-09-19 Hitachi Energy Switzerland Ag Test system for an intelligent electronic device in an electric sub-station

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016215699A1 (de) * 2016-08-22 2018-02-22 Siemens Aktiengesellschaft Vorrichtung und Verfahren zum Schalten von Mittel- und/oder Hochspannungen mit bestimmter Antriebscharakteristik
DE102018213028B4 (de) * 2018-08-03 2020-07-02 Siemens Aktiengesellschaft Trennschalter mit zwei relativ zueinander bewegbaren Kontaktteilen
US10818452B1 (en) * 2018-08-30 2020-10-27 Robert Neal Hendrix Power outage isolation device
EP3624159B1 (de) * 2018-09-11 2021-04-21 ABB Schweiz AG Schaltvorrichtung

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Publication number Publication date
US20220108849A1 (en) 2022-04-07
CN114400162A (zh) 2022-04-26
EP3982386A1 (de) 2022-04-13
US11482385B2 (en) 2022-10-25
FR3114908A1 (fr) 2022-04-08

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