EP1772883B1 - Mittelspannungsleistungsschalter und Wandelement - Google Patents

Mittelspannungsleistungsschalter und Wandelement Download PDF

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Publication number
EP1772883B1
EP1772883B1 EP05077252A EP05077252A EP1772883B1 EP 1772883 B1 EP1772883 B1 EP 1772883B1 EP 05077252 A EP05077252 A EP 05077252A EP 05077252 A EP05077252 A EP 05077252A EP 1772883 B1 EP1772883 B1 EP 1772883B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
interruption
poles
operating mechanism
medium
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.)
Revoked
Application number
EP05077252A
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English (en)
French (fr)
Other versions
EP1772883A1 (de
Inventor
Roberto Capitanio
Giorgio Moriconi
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.)
ABB Technology AG
Original Assignee
ABB Technology AG
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Filing date
Publication date
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Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to AT05077252T priority Critical patent/ATE415696T1/de
Priority to EP05077252A priority patent/EP1772883B1/de
Priority to DE602005011297T priority patent/DE602005011297D1/de
Publication of EP1772883A1 publication Critical patent/EP1772883A1/de
Application granted granted Critical
Publication of EP1772883B1 publication Critical patent/EP1772883B1/de
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01H2033/6665—Details concerning the mounting or supporting of the individual vacuum bottles

Definitions

  • the present invention relates to a medium-voltage vacuum circuit breaker, in particular for applications with rated voltages up to 24 kV, having an extremely compact structure and improved functions and characteristics.
  • the medium-voltage circuit breaker according to the present invention is particularly suitable for use inside electric switchboards, preferably for secondary distribution applications; therefore, the present patent application also concerns a medium-voltage switchboard comprising a medium-voltage vacuum circuit breaker as defined in the claims.
  • medium voltage circuit breakers are used inside switchboards or panels which are positioned at the points of the distribution network where the voltage of the electric power is lowered from high or very high values typical of the primary distribution, to values up to few tens of kV; from a constructive point of view, known switchboards have a substantially parallepiped metallic structure whose internal space is divided into different compartments suitable to accommodate various components, e.g. a bus-bars compartment, a low-voltage compartment, a circuit breaker compartment, and so on.
  • circuit breakers with a compact structure and capable of guaranteeing the required dielectric strength among their live parts, and between these live parts and the metallic walls of the switchboard once a circuit breaker is positioned inside the dedicated compartment.
  • known solutions propose to enclose at least some live parts of the circuit breakers inside an enclosure filled with a gas having a dielectric capacity higher than air, or immersing them in appropriate insulating materials.
  • Other solutions have been conceived trying to improve the constructive layout of the circuit interruption elements, and/or of the mechanical components of the circuit breakers, e.g. the operating/drive mechanism, and/or the transmission system between the operating mechanism and the interruption components.
  • Patent application EP 0758138A1 discloses a three-phase switch-fuse comprising, for each phase, an insulating envelope inside which there is a vacuum ampoule provided with contacts connected to the two terminals of the vacuum ampoule.
  • the envelopes are fixed to a common hollow support beam comprising a shaft attached to a control command for the operation of the vacuum ampoules.
  • the switch-fuse is fixed to a chassis connected to two supporting side plates.
  • the control command comprises a motor fixed to one of such side plates.
  • the main aim of the present invention is therefore to provide a medium-voltage vacuum circuit breaker - and a relative switchboard- which allow some improvements over prior art solutions, and in particular as regard to overall compactness and optimization of the structure.
  • a medium voltage vacuum circuit breaker comprising:
  • FIGS 1-3 show a medium-voltage vacuum circuit breaker, generally indicated by the reference numeral 100, which comprises a plurality of interruption poles 1; in the embodiment illustrated in the figures, the circuit breaker 100 comprises three interruption poles 1, but the number of interruption poles could be varied according to various applications or in case of specific needs.
  • Each interruption pole 1 comprises: a first connection terminal 2 and a second connection terminal 3 which are suitable to allow input/output electrical connections of the pole 1, for example with a power feeding line and a load, not illustrated in the figures; and a vacuum envelope 4, e.g. a vacuum bottle, or vessel or bulb or equivalent term, which contains a fixed contact, schematically illustrated in figure 4 by the reference number 5, which is electrically connected to the first connection terminal 2, and a corresponding mobile contact 6, schematically illustrated in figure 4 by the reference number 6, which is electrically connected to the other connection terminal 3.
  • a vacuum envelope 4 e.g. a vacuum bottle, or vessel or bulb or equivalent term, which contains a fixed contact, schematically illustrated in figure 4 by the reference number 5, which is electrically connected to the first connection terminal 2, and a corresponding mobile contact 6, schematically illustrated in figure 4 by the reference number 6, which is electrically connected to the other connection terminal 3.
  • the circuit breaker 100 further comprises an operating mechanism, overally indicated by the reference number 200 in figures 1-2 , which is provided with a front panel 7; the front panel 7 has a front face lying on a substantial vertical plane, indicated in figure 1 by the reference 8. As roughly illustrated in figure 1 , on said front face there might be provided some functional components, such as for example, opening and closing pushbuttons 9, an operation counter 10, a handle 11, et cetera, suitable for direct vision or intervention of users.
  • the operating mechanism 200 is suitable to supply the actuating energy required for moving the mobile contacts 6 of the plurality of interruption poles 1, between a circuit breaker closed position where each mobile contact 6 is electrically coupled with the corresponding fixed contact 5, and a circuit breaker open position where each mobile contact 6 is instead electrically disengaged from the corresponding fixed contact 5.
  • the construction and functioning of the operating mechanism 200 are well known in the art and are not part of the innovative aspects of the circuit breaker 100 according to the present invention, and therefore it will not be described in more details hereinafter; for example, it is possible to use a known operating mechanism of the so-called EL type, which is already available on the market and is used by the same applicant in other types of medium voltage circuit breakers.
  • the circuit breaker 100 further comprises transmission means indicated in figure 1 by the overall reference 300 for transmitting the actuating energy from the operating mechanism 200 to the mobile contacts 6 of the interruption poles 1.
  • the interruption poles 1 are advantageously aligned each other behind the operating mechanism 200 along a direction perpendicular to the front panel 7; in particular, the interruption poles 1 are arranged so as the respective mobile contacts 6 are movable, during actuation, along a substantial vertical axis 12, with the vertical axes 12 of the various interruption poles 1 which lie in a common vertical plane indicated in figure 2 by the reference number 20 (which practically coincides with the sheet of figure 1 ); said vertical plane 20 is substantially perpendicular to the vertical plane 8 on which the front face of the front panel 7 lies.
  • the first connection terminal 2 and the second connection terminal 3 of each pole 1 are arranged at the ends of the interruption pole itself; according to a particularly preferred embodiment, as illustrated in figure 4 , the connection terminals 2 and 3 of each interruption pole 1 are arranged so as at least their portions 2a, 3a which are suitable to be structurally connected to other conducting elements, e.g. for input/output electrical connections, extend along vertical directions substantially parallel to the vertical axis 12 of the related corresponding pole 1. In this way, by exploiting the vertical dimension for both connections, it is possible to optimize the space occupation and the mutual distances in the transversal direction.
  • the first terminal 2 has an L-shaped configuration while the second terminal 3 is rectilinear and completely positioned vertically.
  • the interruption poles 1 are formed each by a single module, with the various modules which are structurally separated from each other and are fixed, e.g. by means of screws 13, to an elongated supporting member 30; advantageously, as shown in figures 2 and 3 , the elongated supporting member 30 is positioned on a side of and parallel to the aligned interruption poles 1, in correspondence of one of their end portions.
  • each interruption pole 1 comprises an insulating box which is formed by two separate parts, e.g. a cover piece 14 and a base piece 15 connected together, and is fixed, through the screws 13, to the elongated supporting member 30.
  • the insulating box 14-15 has an internal free volume inside which the vacuum envelope 4 is positioned; in particular, as shown in figure 3 wherein the box is represented cut for the sake of clarity of illustration, one of the two forming pieces, e.g. the piece 15 has a shaped body formed monolithically which comprises two internal walls 16 which are spaced from each other and protrude transversally, preferably horizontally, from the lateral sides of the box towards the inside; said walls 16 are provided each with a corresponding slot 17.
  • each vacuum envelope 4 is inserted inside a corresponding box and fixed to the walls 16 with its end portions accommodated within and passing through the slots 17; accordingly, the vacuum envelopes 4 are arranged in a substantial vertical position directly in a dedicated air environment, i.e. without the need of insulating gases.
  • the piece 15 is provided with a series of ribs 18 which are positioned on the internal side and allow increasing the creepage distance.
  • the transmission means 300 are in turn positioned on a lateral side of and preferably parallel to the aligned interruption poles 1; advantageously, in the circuit breaker 100 according to the invention, the transmission means 300 comprise at least one actuating rod 301 which is common to all the interruption poles 1 and is positioned between the poles themselves and the supporting elongated member 30.
  • the transmission means 300 comprise at least one actuating rod 301 which is common to all the interruption poles 1 and is positioned between the poles themselves and the supporting elongated member 30.
  • two parallel actuating rods 301 which are common to all the interruption poles 1, and are mechanically coupled to each other so as to move together as a unique body.
  • the actuating rods 301 are mechanically coupled to the operating mechanism 200, for example by means of a coupling lever 302, and to the mobile contacts 6 of each interruption pole 1, e.g. by means of suitable elements, such as a transmission lever 303, an insulating connecting rod 304, and a rocking lever 305, illustrated in figure 4 .
  • the actuating rods 301 are arranged so as to transmit the actuating energy from the operating mechanism 200 to the movable contacts 6 through a rectilinear movement along an axis 306 which virtually intersects the front face of the front panel 7; in particular, as shown in figure 1 , the actuating rods 301 are arranged parallel to the aligned interruption poles 1 (i.e.
  • the axis 306 lies in a substantially horizontal plane, schematically represented in figure 3 by the reference number 307, is perpendicular to the vertical axes 12 along which the movable contacts 6 move, and intersects the front face of the panel 7 at a right angle.
  • the actuating rods 301 are arranged so as to cross transversely the insulating boxes 14-15 in correspondence of suitable holes 19 provided on their body.
  • the medium-voltage vacuum circuit breaker according to the invention fully achieves the intended aim providing some significant advantages and improvements over the known solutions.
  • the circuit breaker 100 thanks to the constructive layout and positioning of the various components, in particular; of the aligned interruption poles 1 with the respective connection terminals 2, 3 positioned vertically and parallel to the axes 12 of movements of the mobile contacts 6; of the adoption of the translating rods 301 and their arrangement relative to the aligned poles 1 and to the front panel 7; of the supporting member 30; and also of the insulating boxes 14-15; has a whole structure which is extremely compact, sturdy, and functionally effective at the same time.
  • the insulating boxes 14-15 constitute an insulating barrier between the vacuum envelopes and among them and the other elements, in particular the transmission means 300.
  • the insulating box 14-15 thanks to their structure, ease the operations for installing the interruption poles, as well as for possible maintenance interventions.
  • the circuit breaker 100 is particularly suitable for use and realization of very compact medium voltage switchboards, an example of which is schematically indicated with the reference number 50 in figure 5 ; therefore, a further object of the present invention is constituted by a medium voltage switchboard of the type having a top wall 51, a bottom wall 52, a back wall 53, a front wall 54, and two side walls 55 all together defining an internal space suitable to accommodate electrical/electronic devices, characterized in that it comprises a medium voltage circuit breaker 100 as previously described and defined in the claims, and in particular with a rated voltage of 24kV.
  • the switchboard 50 has a frontal width, measured as the distance 56 between the external surface of the two side walls 55 which is equal or less than 500 mm.
  • a frontal width measured as the distance 56 between the external surface of the two side walls 55 which is equal or less than 500 mm.
  • Medium voltage switchboards having such a reduced width and including a medium voltage circuit breaker 100 with rated voltage up to 24 KV, and in particular with a specific rated voltage of 24 kV, without gas insulation are not available at the present state of the art.
  • the medium voltage vacuum circuit breaker thus conceived -and the related switchboard- are susceptible of modifications and variations, all of which are within the scope of the inventive concept as defined in the claims.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (12)

  1. Mittelspannungs-Vakuumlastschalter (100), aufweisend:
    - eine Vielzahl von Unterbrecherpolen (1), die jeweils aufweisen: eine erste Anschlussklemme (2) und eine zweite Anschlussklemme (3) und eine Vakuumhülle (4), die einen festen Kontakt (5), der elektrisch mit der ersten Anschlussklemme (2) verkoppelt ist, und einen entsprechenden mobilen Kontakt (6), der elektrisch mit der zweiten Anschlussklemme verkoppelt ist, enthält, wobei jeder Unterbrecherpol (1) einen Isolierkasten (14 - 15) aufweist, der ein freies Innenraumvolumen begrenzt, das eine entsprechende Vakuumhülle (4) aufnimmt, wobei die Unterbrecherpole (1) lagemäßig aneinander ausgerichtet und so angeordnet sind, dass die mobilen Kontakte (6) während ihrer Betätigung jeweils entlang einer im Wesentlichen vertikalen Achse (12) beweglich sind, wobei die vertikalen Achsen (12) der Unterbrecherpole (1) in einer gemeinsamen vertikalen Ebene liegen (20);
    - einen Betätigungsmechanismus (200), der dafür ausgelegt ist, Energie zum Bewegen der mobilen Kontakte (6) der Vielzahl von Unterbrecherpolen (1) zwischen einer geschlossenen Lastschalterstellung, wo sie jeweils mit dem entsprechenden festen Kontakt (5) elektrisch verkoppelt sind, und einer offenen Lastschalterstellung, wo sie von diesem getrennt sind, zu liefern,
    - Übertragungsmittel (300) zum Übertragen der Energie vom Betätigungsmechanismus (200) auf die mobilen Kontakte (6), wobei die Übertragungsmittel (300) auf einer Seite der lagemäßig aneinander ausgerichteten Unterbrecherpole (1) positioniert sind;
    dadurch gekennzeichnet, dass der Betätigungsmechanismus (200) mit einer vorderen Platte (7), deren Vorderfläche mit funktionalen Komponenten, die eine direkte Beobachtung oder einen direkten Eingriff durch Anwender ermöglichen, versehen ist, wobei die Vorderfläche in einer im Wesentlichen vertikalen Ebene liegt, die zur vertikalen Ebene (20) senkrecht ist.
  2. Lastschalter (100) nach Anspruch 1, dadurch gekennzeichnet, dass die Übertragungsmittel (300) eine Betätigungsstange (301) aufweisen, die mechanisch mit dem Betätigungsmechanismus (200) und dem beweglichen Kontakt (6) der einzelnen Unterbrecherpole (1) verkoppelt ist, wobei die Betätigungsstange (301) so angeordnet ist, dass sie durch eine Bewegung entlang einer rechtlinigen Achse (306) die Energie vom Betätigungsmechanismus (200) auf die beweglichen Kontakte (6) überträgt.
  3. Lastschalter (100) nach Anspruch 2, dadurch gekennzeichnet, dass die Betätigungsstange (301) so angeordnet ist, dass sie den Isolierkasten (14 - 15) der einzelnen Unterbrecherpole (1) kreuzt.
  4. Lastschalter (100) nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass die Betätigungsstange (301) parallel zu den lagemäßig aneinander ausgerichteten Polen (1) angeordnet ist, wobei ihre Bewegungsachse (306) die Frontplatte (7) rechtwinklig schneidet und zu den vertikalen Achsen (12) senkrecht ist.
  5. Lastschalter (100) nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass jeder Isolierkasten (14 - 15) zwei separate Teile aufweist, die miteinander verkoppelt sind, wobei die Isolierkästen (14 - 15) an einem länglichen Stützelement (30) befestigt sind, das auf einer Seite der lagemäßig aneinander ausgerichteten Unterbrecherpole (1) und parallel zu diesen positioniert ist, wobei die Betätigungsstange (301) dazwischen angeordnet ist.
  6. Lastschalter (100) nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die ersten und zweiten Anschlussklemmen (2, 3) jedes Pols (1) an den Endabschnitten des entsprechenden Unterbrecherpols (1) angeordnet sind.
  7. Lastschalter (100) nach Anspruch 6, dadurch gekennzeichnet, dass die ersten und zweiten Anschlussklemmen (2, 3) beide mindestens einen Verbindungsabschnitt (2a, 3a) aufweisen, der parallel zu der entsprechenden vertikalen Achse (12) verläuft.
  8. Lastschalter (100) nach Anspruch 5, dadurch gekennzeichnet, dass einer der beiden Teile (15) einen monolithischen Körper umfasst, der zwei Innenwände (16) aufweist, die voneinander beabstandet sind und quer von den Seitenwänden des Kastens (14 - 15) in Richtung auf das Innere des freien Volumens vorstehen, wobei die Innenwände (16) jeweils mit einem entsprechenden Schlitz (17) versehen sind.
  9. Leistungsschalter (100) nach Anspruch 8, dadurch gekennzeichnet, dass der Teil (15), der mit den Innenwänden (16) versehen ist, eine Vielzahl von Rippen (18) umfasst, die entlang der Innenflächen der Seitenwände angeordnet sind.
  10. Lastschalter (100) nach einem oder mehreren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass jede Vakuumhülle (4) in einer im Wesentlichen vertikalen Position in Luft innerhalb eines jeweiligen Isolierkastens (14 - 15) angeordnet ist, wobei ihre Endabschnitte mit den Innenwänden (16) verbunden sind.
  11. Mittelspannungs-Schaltbrett (50), einen Rahmen mit einer oberen Wand (51), einer unteren Wand (52), einer hinteren Wand (53), einer vorderen Wand (54) und zwei Seitenwänden (55), die alle zusammen einen Innenraum bilden, der dafür geeignet ist, elektrische/elektronische Geräte aufzunehmen, umfassend, dadurch gekennzeichnet, dass es einen Mittelspannungs-Lastschalter (100) gemäß einem oder mehreren der vorangehenden Ansprüche aufweist, der innerhalb des Innenraums angeordnet ist.
  12. Schaltbrett (50) nach Anspruch 11, dadurch gekennzeichnet, dass es eine Frontbreite von mindestens 500 mm aufweist.
EP05077252A 2005-10-04 2005-10-04 Mittelspannungsleistungsschalter und Wandelement Revoked EP1772883B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT05077252T ATE415696T1 (de) 2005-10-04 2005-10-04 Mittelspannungsleistungsschalter und wandelement
EP05077252A EP1772883B1 (de) 2005-10-04 2005-10-04 Mittelspannungsleistungsschalter und Wandelement
DE602005011297T DE602005011297D1 (de) 2005-10-04 2005-10-04 Mittelspannungsleistungsschalter und Wandelement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05077252A EP1772883B1 (de) 2005-10-04 2005-10-04 Mittelspannungsleistungsschalter und Wandelement

Publications (2)

Publication Number Publication Date
EP1772883A1 EP1772883A1 (de) 2007-04-11
EP1772883B1 true EP1772883B1 (de) 2008-11-26

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ID=35840610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05077252A Revoked EP1772883B1 (de) 2005-10-04 2005-10-04 Mittelspannungsleistungsschalter und Wandelement

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EP (1) EP1772883B1 (de)
AT (1) ATE415696T1 (de)
DE (1) DE602005011297D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008048828A1 (de) * 2008-09-22 2010-04-08 Siemens Aktiengesellschaft Verfahren zum Ermitteln und/oder zum Einstellen eines Hubes von Betätigungselementen

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101100707B1 (ko) * 2009-12-31 2012-01-02 엘에스산전 주식회사 진공차단기
DE102011086810B3 (de) * 2011-11-22 2013-02-28 Siemens Aktiengesellschaft Polschale für einen Leistungsschalter
FR2987503B1 (fr) * 2012-02-28 2014-02-28 Schneider Electric Ind Sas Poste de distribution moyenne tension
WO2020159716A1 (en) * 2019-01-31 2020-08-06 S&C Electric Company Multiple hammer blow vacuum interrupter weld breaking
CN113991501B (zh) * 2021-12-07 2024-05-14 西安西电高压开关有限责任公司 一种手车式中压直流断路器

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Publication number Priority date Publication date Assignee Title
DE2211413C3 (de) * 1972-03-06 1975-12-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Mehrpoliges Vakuumschaltgerat
US3898407A (en) * 1974-06-20 1975-08-05 Westinghouse Electric Corp Movable contact-stem operator for a vacuum-type circuit-interrupter
US4336520A (en) * 1980-07-25 1982-06-22 Trayer Frank C Method and apparatus for short circuit protection of high voltage distribution systems
JPS6277806A (ja) * 1985-09-30 1987-04-10 株式会社東芝 キユ−ビクル形ガス絶縁開閉装置
FR2737805B1 (fr) * 1995-08-08 1997-08-29 Gec Alsthom T & D Sa Rupto-fusible sectionneur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008048828A1 (de) * 2008-09-22 2010-04-08 Siemens Aktiengesellschaft Verfahren zum Ermitteln und/oder zum Einstellen eines Hubes von Betätigungselementen

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Publication number Publication date
EP1772883A1 (de) 2007-04-11
ATE415696T1 (de) 2008-12-15
DE602005011297D1 (de) 2009-01-08

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