EP0354445A2 - Arc chamber for a vacuum switch - Google Patents

Arc chamber for a vacuum switch Download PDF

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Publication number
EP0354445A2
EP0354445A2 EP89114173A EP89114173A EP0354445A2 EP 0354445 A2 EP0354445 A2 EP 0354445A2 EP 89114173 A EP89114173 A EP 89114173A EP 89114173 A EP89114173 A EP 89114173A EP 0354445 A2 EP0354445 A2 EP 0354445A2
Authority
EP
European Patent Office
Prior art keywords
contact
vacuum switch
switching chamber
end part
housing
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.)
Granted
Application number
EP89114173A
Other languages
German (de)
French (fr)
Other versions
EP0354445B1 (en
EP0354445A3 (en
Inventor
Karl Dipl.-Ing. Stegmüller
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 Sachsenwerk GmbH
Original Assignee
Sachsenwerk Licht und Kraft AG
Sachsenwerk AG
AEG Sachsenwerk GmbH
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 Sachsenwerk Licht und Kraft AG, Sachsenwerk AG, AEG Sachsenwerk GmbH filed Critical Sachsenwerk Licht und Kraft AG
Publication of EP0354445A2 publication Critical patent/EP0354445A2/en
Publication of EP0354445A3 publication Critical patent/EP0354445A3/en
Application granted granted Critical
Publication of EP0354445B1 publication Critical patent/EP0354445B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • 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
    • H01H33/662—Housings or protective screens
    • H01H33/66238—Specific bellows details
    • H01H2033/66246—Details relating to the guiding of the contact rod in vacuum switch belows

Definitions

  • the innovation relates to a switching chamber of a vacuum switch according to the preamble of claim 1.
  • Such a switching chamber is known from US-PS 30 82 307, in which a double-curved metallic intermediate part is provided in Figure 6 between the contact pin and insulator.
  • the distance between the two parts is relatively small and the intermediate part overlaps the contact bolt at the connection point, which corresponds to a rigid clamping.
  • the insulator is a glass tube into which the other end of the intermediate part is melted. Due to the features described, the intermediate part can be regarded as relatively stiff.
  • the known switching chamber is not suitable for large numbers of switching with large current loads.
  • the innovation is based on the task of further developing switching chambers of the known type for mastering large currents with high switching numbers.
  • the switching chamber consists of a movable contact 1, and a fixed contact 2, the fixed contact pin 3 of Figure 1 is connected to a crossbar 7 via a screw 11.
  • the contacts 1, 2 are surrounded by a housing which consists of two ceramic tubes 5 and a jacket tube 6 made of metal arranged between them.
  • the housing is connected to the fixed contact pin 3 via the end part 4.
  • the chamber On the side of the movable contact 1, the chamber is closed in a vacuum-tight manner by an end cover and a bellows.
  • a guide bush 8 supports the contact pin of the movable contact.
  • the guide bush 8 is mounted in the support body 9.
  • FIG. 2 shows an embodiment of the end part 4 in the form of a simple shaft.
  • the end part 4 is fastened with its outer end 4a to the end face 14 of the ceramic tube 5, while it is likewise fastened with its end face to the outer surface 12 of the contact bolt 3 at the inner end 4b.
  • a multi-shaft end part 4 is shown especially for switchgear chambers with a large diameter.
  • the connection points are subject to the same criteria as in FIG. 2.
  • it is particularly advantageous if the length of the neutral fiber of the End part is at least 1.5 times longer than the linear distance a between the outer fastening point and the lateral surface 12 of the contact bolt 3.
  • Such a shape also allows forces acting in the lateral or twisting direction to be absorbed on the fixed contact 2 without endangering the housing.
  • the end part 4 not only has a wavy shape, but that it is fastened with the end face to the connecting pieces 5 and 3, respectively.
  • the shrinkage stresses which arise due to the different thermal expansion coefficients of the ceramic material and the material for the end part can be kept within low limits. These shrinkage stresses decrease with the ratio of the thicknesses s of the end part 4 to the thickness t of the ceramic tube 5.
  • the frontal attachment to both ends of the end part 4 means a certain flexibility of the same. Due to this articulation, the spring constant of the end part 4 is lower than with a fastening which corresponds to a rigid clamping.
  • the fastening of the end part 4 according to the invention with the contact bolt 3 also secures the under asymmetric loads large short-circuit currents possible adjustment forces in the sense of a slight rotation of the contact bolt around the end part 4.
  • the end part 4 is an elastic component despite its low spring constant. So that the housing does not swing up and down due to slight vibrations, it is advantageous to arrange an elastic support ring 15 between the guide bushing 8 and the support body 9 without gaps.
  • a buffer 10 should be arranged around the fixed contact pin, against which the housing can preferably strike with the outer edge of the ceramic tube 5 in the event of elastic deflections. Such elastic deformations are limited by this buffer and thus ensure that the associated stresses remain limited to low values.

Abstract

In an arc chamber for a vacuum switch with a housing having at least one insulation tube and a stationary contact (2) held by a contact pin (3) supporting the arc chamber, a contact (1) which is movable approximately in the direction of the switch axis and is connected via a bellows vacuum-tightly to the housing (5, 6), touches the stationary contact (2) at the end face in the switched-on position under the influence of a contact force spring, a bent terminal piece (4), vacuum-tightly connecting the insulating tube (5) to the contact pin (2) of the housing, transferring the impact stresses occurring when the vacuum switch is switched on to the housing (5, 6). In order to be able to cope with large currents with a large number of switches here, the terminating piece (4) has a wave-shaped form with at least one full wave and is fastened with the outer cutting edge to the end face (14) of the insulating tube designed as a ceramic tube (5) and with the inner cutting edge to the jacket surface (12) of the contact pin (3) supporting the stationary contact (2). …<IMAGE>…

Description

Die Neuerung betrifft eine Schaltkammer eines Vakuum­schalters nach den Oberbegriff des Anspruchs 1.The innovation relates to a switching chamber of a vacuum switch according to the preamble of claim 1.

Eine solche Schaltkammer ist aus der US-PS 30 82 307 bekannt, bei der in Figur 6 zwischen dem Kontaktbolzen und Isolator ein zweifach gekrümmtes metallisches Zwi­schenteil vorgesehen ist. Der Abstand zwischen den beiden Teilen ist relativ gering und das Zwischenteil überlappt den Kontaktbolzen an der Verbindungsstelle, was einer starren Einspannung entspricht. Der bildlichen Darstellung nach handelt es sich bei dem Isolator um ein Glasrohr, in den das andere Ende des Zwischenteils eingeschmolzen ist. Auf Grund der geschilderten Merkmale ist das Zwischen­teil als verhältnismäßig steif anzusehen. Somit eignet sich die bekannte Schaltkammer nicht für große Schalt­zahlen bei großen Strombelastungen.Such a switching chamber is known from US-PS 30 82 307, in which a double-curved metallic intermediate part is provided in Figure 6 between the contact pin and insulator. The distance between the two parts is relatively small and the intermediate part overlaps the contact bolt at the connection point, which corresponds to a rigid clamping. According to the pictorial representation, the insulator is a glass tube into which the other end of the intermediate part is melted. Due to the features described, the intermediate part can be regarded as relatively stiff. Thus, the known switching chamber is not suitable for large numbers of switching with large current loads.

Der Neuerung liegt die Aufgabe zugrunde, Schaltkammern der bekannten Art zur Beherrschung großer Ströme bei hohen Schaltzahlen weiterzuentwickeln.The innovation is based on the task of further developing switching chambers of the known type for mastering large currents with high switching numbers.

Die Lösung der Aufgabe wird durch die kennzeichnenden Merkmale des ersten Schutzanspruchs erreicht. Mit dem erfindungsgemäßen Abschlußteil gelingt eine weitgehende mechanische Entkopplung des Gehäuses, so daß die auf den ortsfesten Kontakt vor allem beim Einschalten geäußerten Stoßbelastungen nicht oder nur in geringem Maße auf die Bauteile und Verbindungsstellen des Gehäuses übertragen werden. Die gewählte Ausführung ist außerdem auch un­empfindlich gegen die bei großen Kurzschlußströmen in mehrphasigen Netzen in seitlicher Richtung zur Achse der Schaltkammer wirkenden Kräfte.The problem is solved by the characteristic features of the first claim for protection. With the end part according to the invention, mechanical decoupling of the housing is largely achieved, so that the shock loads expressed on the fixed contact, especially when the device is switched on, are not or only to a small extent transferred to the components and connection points of the housing. The selected version is also insensitive to the forces acting in the case of large short-circuit currents in multi-phase networks in the lateral direction to the axis of the switching chamber.

Die Vorteile der Erfindung lassen sich am besten an Hand der Figuren erläutern.

  • Figur 1 Schnitt durch eine erfindungs­gemäße Schaltkammer.
  • Figur 2 Befestigung des Abschlußteils.
The advantages of the invention can best be explained on the basis of the figures.
  • Figure 1 section through a switching chamber according to the invention.
  • Figure 2 attachment of the end part.

Die Schaltkammer besteht aus einem beweglichen Kontakt 1, und einem ortsfesten Kontakt 2, dessen ortsfester Kontakt­bolzen 3 nach Figur 1 über eine Schraubverbindung 11 mit einer Traverse 7 verbunden ist. Die Kontakte 1, 2 sind von einem Gehäuse umgeben, das aus zwei Keramikrohren 5 und einem dazwischen angeordneten Mantelrohr 6 aus Metall be­steht. Das Gehäuse ist über das Abschlußteil 4 mit dem orts­festen Kontaktbolzen 3 verbunden. Auf der Seite des beweg­lichen Kontaktes 1 wird die Kammer durch einen Abschluß­deckel und einen Faltenbalg vakuumdicht verschlossen. Eine Führungsbuchse 8 stützt den Kontaktbolzen des beweglichen Kontakts. Die Führungsbuchse 8 ist im Stützkörper 9 gela­gert.The switching chamber consists of a movable contact 1, and a fixed contact 2, the fixed contact pin 3 of Figure 1 is connected to a crossbar 7 via a screw 11. The contacts 1, 2 are surrounded by a housing which consists of two ceramic tubes 5 and a jacket tube 6 made of metal arranged between them. The housing is connected to the fixed contact pin 3 via the end part 4. On the side of the movable contact 1, the chamber is closed in a vacuum-tight manner by an end cover and a bellows. A guide bush 8 supports the contact pin of the movable contact. The guide bush 8 is mounted in the support body 9.

In Figur 2 ist eine Ausführungsform des Abschlußteils 4 in Gestalt einer einfachen Welle dargestellt. Das Abschluß­teil 4 ist mit seinem äußeren Ende 4a an der Stirnfläche 14 des Keramikrohres 5 befestigt, während es am inneren Ende 4b ebenfalls mit seiner Stirnseite an der Mantelfläche 12 des Kontaktbolzens 3 befestigt ist. In Figur 1 ist besonders für Schaltkammern mit großem Durchmesser ein mehrwelliges Ab­schlußteil 4 dargestellt. Dabei unterliegen die Verbin­dungsstellen aber denselben Kriterien, wie bei Figur 2. Nach einem Unteranspruch des Gebrauchsmusters ist es be­sonders vorteilhaft, wenn die Länge der neutralen Faser des Abschlußteils wenigstens 1,5 mal länger als die lineare Entfernung a zwischen der äußeren Befestigungsstelle und der Mantelfläche 12 des Kontaktbolzens 3 beträgt. Eine solche Formgebung gestattet auch das Auffangen von in seit­licher oder verdrehender Richtung wirkenden Kräfte auf den ortsfesten Kontakt 2, ohne das Gehäuse zu gefährden.FIG. 2 shows an embodiment of the end part 4 in the form of a simple shaft. The end part 4 is fastened with its outer end 4a to the end face 14 of the ceramic tube 5, while it is likewise fastened with its end face to the outer surface 12 of the contact bolt 3 at the inner end 4b. In Figure 1, a multi-shaft end part 4 is shown especially for switchgear chambers with a large diameter. The connection points are subject to the same criteria as in FIG. 2. According to a subordinate claim of the utility model, it is particularly advantageous if the length of the neutral fiber of the End part is at least 1.5 times longer than the linear distance a between the outer fastening point and the lateral surface 12 of the contact bolt 3. Such a shape also allows forces acting in the lateral or twisting direction to be absorbed on the fixed contact 2 without endangering the housing.

Im Sinne der Aufgabenstellung wird es als besonders vorteil­haft angesehen, daß das Abschlußteil 4 nicht nur eine wellige Form hat, sondern daß es jeweils mit der Stirnseite an den Anschlußstücken 5 bzw. 3 befestigt ist. Bezüglich der Be­festigungsstelle mit dem Keramikrohr 5 kann auf diese Weise die auf Grund der unterschiedlichen Wärmedehnungskoeffi­zienten des Keramikmaterials und des Werkstoffs für das Abschlußteil entstehenden Schrumpfspannungen in niedrigen Grenzen gehalten werden. Diese Schrumpfspannungen nehmen mit dem Verhältnis der Dicken s des Abschlußteils 4 zur Dicke t des Keramikrohres 5 ab. Außerdem bedeutet die stirnseitige Befestigung an beiden Enden des Abschluß­teils 4 eine gewisse Gelenkigkeit derselben. Durch diese Gelenkigkeit wird die Federkonstante des Abschlußteils 4 niedriger als bei einer Befestigung, die einer starren Einspannung entspricht. Die erfindungsgemäße Befestigung des Abschlußteils 4 mit dem Kontaktbolzen 3 sichert außer­dem noch die bei asymmetrischen Belastungen unter großen Kurschlußströmen möglichen Verstellkräfte im Sinne einer leichten Drehung des Kontaktbolzens um das Abschlußteil 4.In the sense of the task, it is considered to be particularly advantageous that the end part 4 not only has a wavy shape, but that it is fastened with the end face to the connecting pieces 5 and 3, respectively. With regard to the fastening point with the ceramic tube 5, the shrinkage stresses which arise due to the different thermal expansion coefficients of the ceramic material and the material for the end part can be kept within low limits. These shrinkage stresses decrease with the ratio of the thicknesses s of the end part 4 to the thickness t of the ceramic tube 5. In addition, the frontal attachment to both ends of the end part 4 means a certain flexibility of the same. Due to this articulation, the spring constant of the end part 4 is lower than with a fastening which corresponds to a rigid clamping. The fastening of the end part 4 according to the invention with the contact bolt 3 also secures the under asymmetric loads large short-circuit currents possible adjustment forces in the sense of a slight rotation of the contact bolt around the end part 4.

Das Abschlußteil 4 ist trotz seiner geringen Federkonstanten ein elastisches Bauteil. Damit das Gehäuse nicht durch ge­ringe Erschütterungen auf- und abschwingt ist es vorteil­haft, zwischen der Führungsbuchse 8 und dem Stützkörper 9 einen elastischen Stützring 15 spaltfrei anzuordnen. Außer­dem sollte um den ortsfesten Kontaktbolzen ein Puffer 10 angeordnet werden, gegen den das Gehäuse vorzugsweise mit dem äußeren Rand des Keramikrohrs 5 bei elastischen Aus­schlägen anschlagen kann. Durch diesen Puffer werden solche elastischen Verformungen begrenzt und somit dafür gesorgt, daß die damit verbundenen Beanspruchungen auf niedrige Werte begrenzt bleiben.The end part 4 is an elastic component despite its low spring constant. So that the housing does not swing up and down due to slight vibrations, it is advantageous to arrange an elastic support ring 15 between the guide bushing 8 and the support body 9 without gaps. In addition, a buffer 10 should be arranged around the fixed contact pin, against which the housing can preferably strike with the outer edge of the ceramic tube 5 in the event of elastic deflections. Such elastic deformations are limited by this buffer and thus ensure that the associated stresses remain limited to low values.

Liste der BezugszahlenList of reference numbers

beweglicher Kontaktmoving contact 11 ortsfester Kontaktfixed contact 22nd KontaktbolzenContact bolt 33rd AbschlußteilFinal part 44th Enden des AbschlußteilsEnds of the end part 4a, 4b4a, 4b KeramikrohrCeramic tube 55 MantelrohrCasing pipe 66 AnschlußkörperConnector body 77 FührungsbuchseGuide bushing 88th StützkörperSupport body 99 Pufferbuffer 1010th VerschraubungScrew connection 1111 Mantelfläche der KontaktbolzenLateral surface of the contact bolts 1212 LötverbindungSolder joint 1313 Stirnfläche des KeramikrohrsFace of the ceramic tube 1414 elastischer Stützringelastic support ring 1515

Claims (8)

1. Schaltkammer eines Vakuumschalters mit einem wenig­stens ein Isolierrohr aufweisenden Gehäuse, einem durch einen die Schaltkammer tragenden Kontaktbolzen gehaltenen ortsfesten Kontakt, einem in etwa in Rich­tung der Schalterachse beweglichen, über einen Falten­balg vakuumdicht mit dem Gehäuse verbundenen Kontakt, der den ortsfesten Kontakt in der eingeschalteten Stellung stirnseitig unter der Wirkung einer Kontakt­kraftfeder berührt, und einem das Isolierrohr mit dem Kontaktbolzen des Gehäuses vakuumdicht verbindenden, gekrümmten Abschlußteil der die beim Einschalten des Vakuumschalters entstehenden Stoßbelastungen auf das Gehäuse überträgt,
dadurch gekennzeichnet,
daß das Abschlußteil (4) eine wellige Form mit wenig­stens einer vollen Welle besitzt und mit der äußeren Schnittkante an der Stirnseite (14) des als Keramik­rohr (5) ausgebildeten Isolierrohres und mit der inneren Schnittkante an der Mantelfläche (12) des den ortsfesten Kontakt (2) tragenden Kontaktbolzens (3) befestigt ist.1.Switching chamber of a vacuum switch with a housing having at least one insulating tube, a stationary contact held by a contact bolt carrying the switching chamber, a contact which is movable approximately in the direction of the switch axis and connected in a vacuum-tight manner to the housing by means of a bellows and which connects the stationary contact in the Position touches on the face side under the action of a contact force spring, and a curved end part which connects the insulating tube to the contact bolt of the housing in a vacuum-tight manner and which transmits the shock loads which occur when the vacuum switch is switched on,
characterized,
that the end part (4) has a wavy shape with at least one full shaft and with the outer cut edge on the end face (14) of the insulating tube designed as a ceramic tube (5) and with the inner cut edge on the outer surface (12) of the fixed contact ( 2) supporting contact pin (3) is attached. 2. Schaltkammer eines Vakuumschalters nach Anspruch 1,
dadurch gekennzeichnet,
daß die Enden (4a, 4b) des Abschlußteils (4) in einem zumindest annähernd rechten Winkel zu den Befestigungs­flächen (12, 14) des Kontaktbolzens (3) und des Kera­mikrohres (5) angeordnet sind.2. switching chamber of a vacuum switch according to claim 1,
characterized,
that the ends (4a, 4b) of the end part (4) are arranged at least approximately at right angles to the fastening surfaces (12, 14) of the contact bolt (3) and the ceramic tube (5). 3. Schaltkammer eines Vakuumschalters nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die neutrale Faser (Mittellinie) des Abschluß­teils (4) wenigstens 1,5 mal länger als der Abstand (a) zwischen den Befestigungsstellen ist.3. switching chamber of a vacuum switch according to claim 1 or 2,
characterized,
that the neutral fiber (center line) of the end part (4) is at least 1.5 times longer than the distance (a) between the fastening points. 4. Schaltkammer eines Vakuumschalters nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß das Abschlußteil (4) aus einem Chrom-Nickel-Stahl von maximal 1 mm Wandstärke besteht.4. switching chamber of a vacuum switch according to one of claims 1 to 3,
characterized,
that the end part (4) consists of a chrome-nickel steel with a maximum wall thickness of 1 mm. 5. Schaltkammer eines Vakuumschalters nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß die Befestigung des Abschlußteils (4) durch Lötverbindungen erfolgt.5. switching chamber of a vacuum switch according to one of claims 1 to 4,
characterized,
that the attachment of the end part (4) is carried out by soldered connections. 6. Schaltkammer eines Vakuumschalters nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß die Befestigung des Abschlußteils (4) durch Schweißverbindungen erfolgt.6. switching chamber of a vacuum switch according to one of claims 1 to 4,
characterized,
that the attachment of the end part (4) is carried out by welded connections. 7. Schaltkammer eines Vakuumschalters nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet,
daß die Eigenbewegung des Gehäuses durch einen elastischen Stützring (15) und einen dämpfenden Puffer (10) begrenzt ist.7. switching chamber of a vacuum switch according to one of the preceding claims,
characterized,
that the natural movement of the housing is limited by an elastic support ring (15) and a damping buffer (10). 8. Schaltkammer eines Vakuumschalters nach Anspruch 7,
dadurch gekennzeichnet,
daß der Stützring (15) zwischen einer den beweglichen Kontakt (1) führenden Buchse (8) und einem festen Stützkörper (9) eingebaut ist, während der Puffer (10) mit der Stirnfläche (14) des Keramikrohrs (5) zusammen­wirkt.8. switching chamber of a vacuum switch according to claim 7,
characterized,
that the support ring (15) between a movable contact (1) leading bushing (8) and a fixed support body (9) is installed, while the buffer (10) cooperates with the end face (14) of the ceramic tube (5).
EP89114173A 1988-08-06 1989-08-01 Arc chamber for a vacuum switch Expired - Lifetime EP0354445B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8810063U DE8810063U1 (en) 1988-08-06 1988-08-06
DE8810063U 1988-08-06

Publications (3)

Publication Number Publication Date
EP0354445A2 true EP0354445A2 (en) 1990-02-14
EP0354445A3 EP0354445A3 (en) 1990-12-12
EP0354445B1 EP0354445B1 (en) 1994-12-28

Family

ID=6826715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114173A Expired - Lifetime EP0354445B1 (en) 1988-08-06 1989-08-01 Arc chamber for a vacuum switch

Country Status (4)

Country Link
US (1) US4983793A (en)
EP (1) EP0354445B1 (en)
JP (1) JPH0282418A (en)
DE (2) DE8810063U1 (en)

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Publication number Priority date Publication date Assignee Title
DE3825407A1 (en) * 1988-07-27 1990-02-01 Sachsenwerk Ag SWITCH CHAMBER OF A VACUUM SWITCH
US6867385B2 (en) * 2003-02-21 2005-03-15 Mcgraw-Edison Company Self-fixturing system for a vacuum interrupter
EP1760743A1 (en) * 2005-09-02 2007-03-07 ABB Research Ltd Vacuum circuit breaker with rotatably mounted movable contact
FR2951314A1 (en) * 2009-10-12 2011-04-15 Schneider Electric Ind Sas BRAKE ASSEMBLY DEVICE FOR AN END HOOD ON A CYLINDRICAL BODY AND A VACUUM BULB COMPRISING SUCH A DEVICE
CN104330733A (en) * 2014-11-21 2015-02-04 西安伯龙高铁电气有限公司 Train roof insulation detection device
KR102545133B1 (en) * 2016-04-05 2023-06-19 엘에스일렉트릭(주) Vacuum interubter for a circuit breaker
JP7004027B2 (en) 2020-06-18 2022-01-21 株式会社明電舎 Vacuum interrupters and vacuum circuit breakers

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Publication number Priority date Publication date Assignee Title
US3082307A (en) * 1959-04-30 1963-03-19 Gen Electric Vacuum type circuit interrupter
DE2007676A1 (en) * 1969-03-27 1970-10-08 Westinghouse Electric Corp., Pittsburgh, Pa. (V.St.A.) Vacuum switch
FR2038481A6 (en) * 1968-04-29 1971-01-08 Inst Prueffeld Elekt
DE3501603A1 (en) * 1984-02-02 1985-08-01 Westinghouse Electric Corp., Pittsburgh, Pa. LOW VOLTAGE HIGH FREQUENCY VACUUM SWITCH
DE8212546U1 (en) * 1982-04-30 1986-02-20 Siemens AG, 1000 Berlin und 8000 München Vacuum interrupter

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JPS56156626A (en) * 1980-05-06 1981-12-03 Meidensha Electric Mfg Co Ltd Vacuum breaker
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082307A (en) * 1959-04-30 1963-03-19 Gen Electric Vacuum type circuit interrupter
FR2038481A6 (en) * 1968-04-29 1971-01-08 Inst Prueffeld Elekt
DE2007676A1 (en) * 1969-03-27 1970-10-08 Westinghouse Electric Corp., Pittsburgh, Pa. (V.St.A.) Vacuum switch
DE8212546U1 (en) * 1982-04-30 1986-02-20 Siemens AG, 1000 Berlin und 8000 München Vacuum interrupter
DE3501603A1 (en) * 1984-02-02 1985-08-01 Westinghouse Electric Corp., Pittsburgh, Pa. LOW VOLTAGE HIGH FREQUENCY VACUUM SWITCH

Also Published As

Publication number Publication date
US4983793A (en) 1991-01-08
EP0354445B1 (en) 1994-12-28
DE58908824D1 (en) 1995-02-09
EP0354445A3 (en) 1990-12-12
DE8810063U1 (en) 1988-09-29
JPH0282418A (en) 1990-03-23

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