EP2927926B1 - Mittelspannungsschaltanlage mit zwei schaltern pro phase - Google Patents

Mittelspannungsschaltanlage mit zwei schaltern pro phase Download PDF

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Publication number
EP2927926B1
EP2927926B1 EP15305395.4A EP15305395A EP2927926B1 EP 2927926 B1 EP2927926 B1 EP 2927926B1 EP 15305395 A EP15305395 A EP 15305395A EP 2927926 B1 EP2927926 B1 EP 2927926B1
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EP
European Patent Office
Prior art keywords
medium voltage
voltage switchgear
switch
vacuum bottle
switchgear according
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Application number
EP15305395.4A
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English (en)
French (fr)
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EP2927926A1 (de
Inventor
François Trichon
Hemantkumar Patel
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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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
    • H01H33/125—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
    • 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
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches

Definitions

  • the invention relates to a medium voltage switchgear comprising two switches per phase and designed to be used in medium voltage distribution networks and particularly in secondary distribution systems, said switchgear being able to perform the functions respectively of current flow between two parts, of current interruption between these parts and of earthing of one of the parts.
  • the more popular switchgear architecture which is needed is the ring main unit (RMU) described in EP 0283189 , and which is used in the power distribution industry, particularly for ring main equipment.
  • This apparatus is composed on the one hand, of two main switches performing the disconnection function, theses switches being connected to a distribution ring, and on the other hand, of one fuse-switch disconnector or circuit breaker per phase protecting the MV/LV transformer. All these switches are connected to a busbar. Practically, all the switches are grouped together into a unique tank filled with SF6 gas, as dielectric media, and sealed for life.
  • This architecture gives optimum design for low cost, low foot print, reliability, insensitivity to atmospheric conditions and high quantity units.
  • SF6 SF6 doesn't want to be used by the power grid operator
  • the manufacturer of switches must find out another mean in order to break nominal current or transfer current. This means can be a puffer type switch using gas like CO2 or air but there is a limited number of full load operations. Or, the manufacturer can use the vacuum bottle as interrupter as described previously. In this case, in the apparatus disclosed above, it requires two vacuum bottles for two switches per phase and operated independently, and that represent a costly solution.
  • US 4 220 837 A describes a medium voltage switchgear according to the preamble of claim 1.
  • the aim of the invention is to provide a very compact and less costly three positions medium voltage switchgear working in air or any gaz or liquid without current breaking in this medium and with high performance of current breaking.
  • the main object of the invention is to provide a medium voltage switchgear according to claim 1.
  • said breaking system uses vacuum break technology such as a vacuum bottle.
  • one or each switch is a three-positions switch, respectively a current flow position, an open position, and an earthed position.
  • one or each switch uses gas-insulated technology such nitrogen, C02, air, fluorinated gases...and so on, and any mixture of these gases.
  • each switch is a one-phase switch or a three-phases switch.
  • said breaking system comprises a vacuum bottle, and in that each switch comprises a movable contact and a stationary contact, said stationary contacts (or said movable contacts) being electrically connected to a bus bar, and in that said vacuum bottle is arranged so that its longitudinal direction extends sensibly perpendicularly to the longitudinal direction of said busbar.
  • said stationary contact of the vacuum bottle is electrically connected to the busbar.
  • said longitudinal direction of the vacuum bottle is sensibly parallel to the height of the medium voltage switchgear.
  • each mechanism comprises a spring provided for returning back said pivot links to their original position after a certain degree of rotation of the moving contact of the vacuum bottle, said spring comprising a first end bearing on said pivot levers and a second end bearing on the bus bar.
  • said switchgear comprises, for each switch, a slot provided in pivot levers, said slot operating in conjunction with a pin belonging to the corresponding connecting links, so that a sufficient gap between moving contact and stationary contact of the switch is reached to withstand TRV before opening of vacuum breaking system.
  • each switchgear comprises for each mechanism, a slot provided in the bracket of the switchgear and able to operate in conjunction with said pin integrated with said corresponding connecting links, so that this slot guide the movement of the pin and connecting links such that the vacuum bottle will open with the speed that allows to break the current, and up to its full stroke and remain open for 20 to 30ms.
  • said switchgear comprises per phase, two front switches being arranged one with respect to the other, so that their moving contacts moves in rotation in opposite direction.
  • each mechanism comprises a flexible wire, said wire being connected by one of its ends, to the moving contact of said vacuum bottle, and by its other end, to the corresponding contact assembly, said wire extending in a plane sensibly parallel to the plane comprising the two switches and the central axis of said vacuum bottle.
  • said switchgear comprises at least one isolating shield integral with the moving contact of the vacuum bottle and a stationary shield adapted to work as a dielectric barrier.
  • said switchgear comprises per phase, two linearly arranged switches having their moving contacts moving in rotation in same direction, one of said connecting links being replaced by a longer connecting link and said sliders being added around the vacuum bottle.
  • said switchgear comprises per phase, two linear switches having their moving contacts moving in translation in same direction.
  • said switchgear is rated from 1 KV to 52 KV.
  • said switchgear is a circuit breaker, an interrupter or a load break switch.
  • FIG. 1 The figures illustrate a part of a medium voltage switchgear according to the invention used in a ring main unit commonly called RMU and more particularly described in EP 0 283189 .
  • This ring main unit is composed principally of a first part comprising per phase two main switches disconnectors A,B connected on the one hand, to the distribution ring, and on the other hand, to a common busbar 28, and a second part non illustrated in this figure, comprising one fuse-switch disconnector or circuit breaker per phase, and designed to protect a Medium voltage/Low Voltage transformer. All these switches of the two parts are grouped together into a unique tank filled with Nitrogen, CO2, Air or any fluorinated gas, as dielectric media, and sealed for life.
  • the lower module has a first set of three bushes, non illustrated in this figure, one for each phase of a first three-phase electrical supply.
  • Each of the conductors passes respectively through respective ones of the bushes to terminate within the lower chamber.
  • Each of the conductors has an input contact which pivotally supports a switching contact 23 respectively.
  • Each of the switching contacts is connected by a respective link to an operating shaft non illustrated in this figure, all three switching contacts thus being driven from the same operating shaft. These switching contacts are be driven by rotation of shaft either downwardly into connection with respective earth contacts or upwardly into contact with respective output contacts 27 electrically connected to respective bus bars.
  • a second set of three tapered input bushes and appropriate conductors, one for each phase of a second three-phase electrical supply, is associated with the lower module at the opposite side thereof, the arrangement being substantially a mirror image of the switching arrangement associated with input conductors.
  • each conductor has an associated switching contact 22 driven from an operating shaft so that it can adopt a central off position, a lower earth on position in contact with a respective one of three earth contacts, or an upper on position in contact with a respective one of three output contacts 26.
  • the lower chamber thus houses two single/three-phase ring switches A,B each capable of connecting a respective set of three input contacts to a respective set of three output contacts. Each switch is driven from a separate shaft, which is in turn driven by an operating mechanism under control of the respective switch control panel.
  • a single vacuum interrupter 2 is used as breaking chamber for two medium voltage three position switches A,B, for each phase, in order to break a load current, these two switches belonging respectively to two independent circuits C1,C2.
  • the common vacuum interrupter 2 act in parallel during breaking with either of the two switches which are located in front of each other.
  • figure 1 is disclosed the mechanism for operating the movable contact 42 of the vacuum interrupter 2.
  • This mechanism comprises four pivot links 3, 18, 4, 19 mounted in articulated manner by one of their end with respect to a support, four connecting links 5,16 and 6,17 pivoted by one of their end to one of the pivot link and by another end to the stem of the movable contact 42 of the vacuum interrupter 2, four sliders 9,10,11,12 and a bracket 13.
  • the set of four sliders 9,10,11,12 and pushing plate 8 allows the opening of vacuum bottle independently by the external sliders 9 and 10 if the RH switch opens or by the internal sliders 11 and 12 if the left switch opens.
  • the pivot links are pivoted on bracket 13 at point 14,15. Pivot links 3 and 18 are operated from right side and pivot links 4 and 19 are operated from left side.
  • Two connecting links 5 and 16 are hinged with pivot links 3 and 18 respectively at one end by the common pin 35. The other end is hinged to slider 9 and 10 respectively. Similarly, the other two connecting links 6 and 17 are connected with pivot links 4, 19 by the common pin 36 and with slider 11, 12. These pins 35, 36 are guided in respective slot 37,38 provided in bracket 13.
  • Said sliders 9,10,11,12 are provided with vertical guides to slide linearly in vertical direction. These sliders are touching on the pushing plate 8 which is holding by bush 7.
  • the bush 7 is connected to moving end 42 of vacuum interrupter 2.
  • Each pair of pivot links 3, 18 and 4,19 are connected by contact assembly 20 and 21 respectively.
  • the vacuum interrupter forms a parallel circuit with main circuit only during an opening operation of either switch. The switches are made open and close by their moving contacts 22 and 23.
  • the translation of current to the parallel circuit during opening operation is through a flexible wire 24 and 25. One end of wire is connected to the moving end 42 of vacuum interrupter and the other end is connected to the contact assembly 20,21.
  • FIG. 1 it can be seen that under the pushing plate 8 an insulating screen 40 has been added which is moving when the vacuum bottle 2 is opening, which offer a dynamic insulation protection allowing to compact more the architecture by increasing the creepage distances between the two switches A,B.
  • This insulating screen 40 is associated to a stationary screen 41, the assembly of these two screens allowing to have a compact architecture, to reduce the chances of internal arc between functions, to achieve a quasi separation between functions which is important for the reliability of the device.
  • the vacuum interrupter 2 is not operating by the virtue of pivot links 3,18 and 4,19. These links are toggling during closing operation and thus not affected to the vacuum interrupter 2.
  • the moving contacts 22 and 23 are in contact with the fixed contact 26 and 27 respectively. Both fixed contacts 26 and 27 are connected to a common bus bar 28.
  • the right hand side switch will be noted RH switch whereas the left hand side switch will be noted LH switch.
  • the switchgear according to the invention is in a closed position, in which the two switches are in a closed position.
  • the moving contact 22 of the RH switch pivoted at point 29, is activating by handle not shown in this figure.
  • the moving contact 22 starts rotating anti clock wise. Before it leaves the fixed contact 26, it touches the contact 20, as illustrated in figure 3 . Thus, one current is passing through fixed contact 26 and moving contact 22, and the other current is passing through vacuum interrupter 2 and the moving contact 22 via a flexible wire 24.
  • the moving contact 22 operates the pivot levers 3,18 via contact 20. Once the moving contact leaves the fixed contact 26, as illustrated in figure 4 , whole current is passing through the vacuum interrupter 2.
  • the rotational movement of the pivot levers 3, 18 operates the connecting links 5,16. These connecting links 5,16 moves the sliders 9,10 to downward side, as illustrated in figure 8 .
  • these two sliders 9,10 push the pushing plate 8 .
  • the sliders 11,12 are disconnected from the pushing plate 8 so that the LH contact 21 is not moving and the spring 32 is not involved in the operation, which is reducing the energy involved in the operation.
  • the pushing plate 8 is hold by the bush 7, it pulls downward the bush, which in turn pulls the moving stem or moving contact 42 of the vacuum interrupter.
  • the moving stem operates, it separates from the fixed contact 43 of the vacuum interrupter as illustrated in figure 5 and 6 .
  • arcing is quenching rapidly due to high dielectric recovery of vacuum.
  • the moving contact of the vacuum interrupter is connected both to contact 20 and 21, it means that the gap between fixed contact 26 and moving contact 22, and between fixed contact 27 and moving contact 23 must withstand the Transient Recovery Voltage (TRV), that could occurs depending on the incoming and outgoing network.
  • TRV Transient Recovery Voltage
  • a slot 39 is provided in pivot links 3,18 and 4,19 cooperating with pivot pins 35,36 belonging to connecting links 5,16 and 6,17.
  • the vacuum bottle is oriented vertically and directly connected to the busbar 28.
  • vacuum bottle Due to the fact that the vacuum bottle is oriented vertically, it is possible to increase its rated voltage by increasing its length which advantageously does not impact the size of the switchgear with respect to width and depth.
  • the two switches E,F are linear switches and comprise movable contacts 47,48 which are moving in translation and no more in rotation and except this difference
  • the mechanisms for operating the vacuum bottle comprise the same elements as for the preceding embodiment and have the same reference numerals, as well as the sequencing principle is the same as previously disclosed. Consequently, the structure and the sequencing of this embodiment will not be disclosed again.
  • each switch is modular type, is independent, and has its own switching capacity.
  • the elements are the same and are referenced with the same reference numerals, the only difference being that one of the connecting link is replaced by a longer connecting link 46 and the structure with sliders 9,10,11,12 is added around the vacuum bottle.
  • This invention allows to offer a simple three positions switch that is using enduring and reliable vacuum technology to break the current.
  • the invention allows to make it working independently from the two switches, and respecting the breaking sequence and optimizing the space needed.
  • This invention can be used in both rotative and linear breaking technology and may be extended to circuit breaker.
  • This invention will be used preferably as breaking technology in medium voltage switches rated from 1 kV to 52 kV.
  • a global electrical endurance is easy to improve compare to SF6 or gas or oil breaking system because vacuum technology is able to withstand more operations both electrically and mechanically.
  • the configuration in which the switchgear uses rotation technology and a vacuum bottle oriented vertically presents some advantages which are that the necessary space inside the switchgear is reduced, in that it is possible to increase the rated voltage as the vacuum bottle length is increasing, in that the distance between the movable contact of the vacuum bottle and the bus bar is increased resulting in no more necessity to provide over insulation such as sleeve around the vacuum bottle to withstand the TRV, and finally in that a single wire can be used for each switch which is places in line with the centre line or central axis X of vacuum interrupter, which allows to reduce the distance between phases, and consequently the isolating distance and consequently the congestion of the switchgear.
  • the novelty of this invention is the mutualisation of the breaking system between two independent medium voltage power electrical circuits and the making such a way that it behaves as per as if there was no mutualisation, said switchgear needing same energy to open the switch and the vacuum bottle, respecting the speed for vacuum bottle opening, respecting the sequence of closing, respecting the speed of closing.
  • switch gear panel allows to share the current breaking system between at least two switches allowing cost reduction on breaking system.
  • the breaking system is the one described in EP 2 479 769 , it allows to save at least three Vacuum bottle for two switches.
  • This architecture allows to keep almost same foot print that SF6 equipment and will work in equipment such as this disclosed in EP 0 283 189 even if SF6 is not used as breaking gas media.

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

Claims (18)

  1. Mittelspannungsschaltanlage, die zwei Schalter pro Phase umfasst, wobei jeder Schalter Mittel zum Durchführen der Abschaltungsfunktion und Mittel zum Durchführen der Unterbrechungsfunktion umfasst,
    wobei
    sie pro Phase ein einziges Unterbrechungssystem (2) umfasst, wobei das Unterbrechungssystem dazu ausgelegt ist, entweder mit einem oder dem anderen von zwei Mechanismen M, N unabhängig voneinander betrieben zu werden, wobei die Mechanismen jeweils durch die zwei Schalter (A, B), (C, D), (E, F) betrieben werden, wobei die Schalter jeweils zu zwei unabhängigen elektrischen Mittelspannungsleistungskreisen C1, C2 gehören, wobei
    jeder Mechanismus M, N an einer Halterung (13) der Schaltungsanlage schwenkbare Schwenkverbindungen (3, 18, 4, 19), Verbindungselemente (5, 16, 6, 17), die an einem ihrer Enden aufgehängt sind, mit Schwenkverbindungen (3, 18, 4, 19) an einem Ende der Schwenkverbindungen umfasst, wobei die Schwenkverbindungen ein anderes Ende umfassen, das zusammen mit dem beweglichen Kontakt (22, 23) des entsprechenden Schalters wirkt, und wobei die Verbindungselemente, durch ein anderes ihrer Enden, zusammen mit dem beweglichen Kontakt (42) der Vakuumröhre (2) durch dazwischenliegende Mittel wirken, die es ermöglichen, dass die zwei Mechanismen unabhängig voneinander arbeiten,
    dadurch gekennzeichnet, dass
    die dazwischenliegenden Mittel Schieber (9, 10, 11, 12) umfassen, die mit Bezug zur Vakuumröhre (2) verschiebbar montiert sind, wobei die Schieber wenigstens einen internen Schieber (11, 12), der von einem der zwei Mechanismen M, N antreibbar ist, und wenigstens einen externen Schieber (9, 10), der von dem anderen der zwei Mechanismen antreibbar ist, umfassen, wobei die Schieber auf einer Platte (8) gehalten werden, die selbst auf dem beweglichen Kontakt (42) der Vakuumröhre (2) gehalten wird.
  2. Mittelspannungsschaltanlage nach Anspruch 1, dadurch gekennzeichnet, dass das Unterbrechungssystem (2) Vakuumunterbrechungstechnologie, wie etwa eine Vakuumröhre, verwendet.
  3. Mittelspannungsschaltanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein oder jeder Schalter (A, B), (C, D) und (E, F) ein Schalter mit drei Positionen, jeweils eine Stromflussposition, eine geöffnete Position und eine geerdete Position, ist.
  4. Mittelspannungsschaltanlage nach Anspruch 3, dadurch gekennzeichnet, dass ein oder jeder Schalter (A, B), (C, D) und (E, F) gasisolierte Technologie verwendet, wie Stickstoff, CO2, fluorierte Gase, Luft, ... und so weiter und jede Mischung solcher Gase.
  5. Mittelspannungsschaltanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jeder Schalter ein Ein-Phasen-Schalter oder ein DreiPhasen-Schalter ist.
  6. Mittelspannungsschaltanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Unterbrechungssystem (2) eine Vakuumröhre umfasst, und dadurch, dass jeder Schalter einen beweglichen Kontakt (22, 23) und einen stationären Kontakt (26, 27) umfasst, wobei die stationären Kontakte (oder die beweglichen Kontakte) elektrisch mit einer Sammelschiene (28) verbunden sind, und dadurch, dass die Vakuumröhre (2) so angeordnet ist, dass sich ihre Längsrichtung im Wesentlichen senkrecht zur Längsrichtung der Sammelschiene (28) erstreckt.
  7. Mittelspannungsschaltanlage nach Anspruch 6, dadurch gekennzeichnet, dass der stationäre Kontakt (43) der Vakuumröhre (2) elektrisch mit der Sammelschiene (28) verbunden ist.
  8. Mittelspannungsschaltanlage nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Längsrichtung der Vakuumröhre (2) im Wesentlichen parallel zur Höhe der Mittelspannungsschaltanlage ist.
  9. Mittelspannungsschaltanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jeder Mechanismus M, N eine Feder (31, 32) umfasst, die dazu bereitgestellt ist, die Schwenkverbindungen (3, 18, 4, 19) nach einem gewissen Grad an Rotation des bewegenden Kontakts (42) der Vakuumröhre (2) in ihre Ursprungsposition zurückzubewegen, wobei die Feder ein erstes Ende, das auf den Schwenkhebeln gehalten wird, und ein zweites Ende, das auf der Sammelschiene (28) gehalten wird, umfasst.
  10. Mittelspannungsschaltanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie für jeden Schalter A, B einen Schlitz (39) umfasst, der in den Schwenkhebeln (3, 18, 4, 19) bereitgestellt ist, wobei der Schlitz zusammen mit einem Stift (35, 36), der zu den entsprechenden Verbindungselementen (5, 16, 6, 17) gehört, so wirkt, dass eine ausreichende Lücke zwischen dem bewegenden Kontakt (22, 23) und dem stationären Kontakt (26, 27) des Schalters A, B erreicht wird, um einer TRV standzuhalten, bevor das Vakuumunterbrechungssystem (2) geöffnet wird.
  11. Mittelspannungsschaltanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie für jeden Mechanismus M, N einen Schlitz (37, 38) umfasst, der in der Halterung (13) der Schaltanlage bereitgestellt ist und der in der Lage ist, zusammen mit dem Stift (35, 36), der mit den entsprechenden Verbindungselementen (5, 16, 6, 17) integriert ist, so zu wirken, dass dieser Schlitz die Bewegung des Stifts und der Verbindungselemente so führt, dass sich die Vakuumröhre mit der Geschwindigkeit, die es erlaubt, den Strom zu unterbrechen, und bis zu ihrem vollen Anschlag öffnet und für 20 bis 30 ms geöffnet verbleibt.
  12. Mittelspannungsschaltanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie zwei vordere Schalter A, B pro Phase umfasst, die so zueinander angeordnet sind, dass sich ihre beweglichen Kontakte (22, 23) bei einer Drehung in entgegengesetzter Richtung bewegen.
  13. Mittelspannungsschaltanlage nach Anspruch 12, dadurch gekennzeichnet, dass jeder Mechanismus M, N einen flexiblen Draht (24, 25) umfasst, wobei der Draht mit einem seiner Enden mit dem bewegenden Kontakt (42) der Vakuumröhre (2) und mit seinem anderen Ende mit der entsprechenden Kontaktbaugruppe (20, 21) verbunden ist, wobei sich der Draht in einer Ebene im Wesentlichen parallel zur Ebene erstreckt, die die zwei Schalter und die zentrale Achse X der Vakuumröhre (2) umfasst.
  14. Mittespannungsschaltanlage nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass sie wenigstens eine isolierende Abschirmung (40) integral mit dem bewegenden Kontakt (42) der Vakuumröhre (2) und eine stationäre Abschirmung (41), die dazu ausgelegt ist, als eine dielektrische Barriere zu arbeiten, umfasst.
  15. Mittelspannungsschaltanlage nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass sie pro Phase zwei linear angeordnete Schalter C, D umfasst, wobei sich ihre bewegenden Kontakte (44, 45) bei einer Drehung in gleicher Richtung bewegen, wobei eines der Verbindungselemente mit einem längeren Verbindungselement (46) ersetzt ist und die Schieber (9, 10, 11, 12) um die Vakuumröhre (2) herum hinzugefügt sind.
  16. Mittelspannungsschaltanlage nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass sie pro Phase zwei lineare Schalter (E, F) umfasst, wobei sich ihre bewegenden Kontakte (47, 48) bei einer Translation in gleicher Richtung bewegen.
  17. Mittelspannungsschaltanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie für 1 kV bis 52 kV klassifiziert ist.
  18. Mittelspannungsschaltanlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ein Leistungsschalter, ein Stromunterbrecher oder ein Lasttrennschalter ist.
EP15305395.4A 2014-04-03 2015-03-18 Mittelspannungsschaltanlage mit zwei schaltern pro phase Active EP2927926B1 (de)

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EP2927926B1 true EP2927926B1 (de) 2017-02-01

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CN111968877A (zh) * 2020-09-17 2020-11-20 安徽普众机电有限公司 一种高压真空断路器结构
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
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EP2927926A1 (de) 2015-10-07
CN104979129A (zh) 2015-10-14
IN2014KO00434A (de) 2015-10-09
CN104979129B (zh) 2019-10-08

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