EP0335114A2 - Housing for a vacuum switch - Google Patents

Housing for a vacuum switch Download PDF

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Publication number
EP0335114A2
EP0335114A2 EP89103337A EP89103337A EP0335114A2 EP 0335114 A2 EP0335114 A2 EP 0335114A2 EP 89103337 A EP89103337 A EP 89103337A EP 89103337 A EP89103337 A EP 89103337A EP 0335114 A2 EP0335114 A2 EP 0335114A2
Authority
EP
European Patent Office
Prior art keywords
ceramic body
separation point
switching chamber
tabs
screen
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
EP89103337A
Other languages
German (de)
French (fr)
Other versions
EP0335114B1 (en
EP0335114A3 (en
Inventor
Günter Pilsinger
Joseph H.F.G. Lipperts
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.)
Calor Emag AG
Original Assignee
Calor Emag AG
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 Calor Emag AG filed Critical Calor Emag AG
Publication of EP0335114A2 publication Critical patent/EP0335114A2/en
Publication of EP0335114A3 publication Critical patent/EP0335114A3/en
Application granted granted Critical
Publication of EP0335114B1 publication Critical patent/EP0335114B1/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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • 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
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66276—Details relating to the mounting of screens in vacuum switches

Definitions

  • the invention relates to a vacuum interrupter chamber with a ceramic body composed of two cylinder halves, which is closed on both sides by metal covers which are penetrated by conductor pins which are movable relative to one another and carry switching contacts.
  • the ceramic body has an inner groove along its circumferential separation point for holding a two-part screen surrounding the switching point, the angled adjacent ends of which engage in the inner groove.
  • a variant of the known consists in designing the screen in one piece and letting it protrude into the inner groove with an extensive expression. The separation point of the ceramic body is bridged by the axial section of the expression. This training also serves to secure the screen.
  • the object of the invention is to design the vacuum interrupter described at the outset in such a way that, in addition to a suitable fastening of the shield, this can also ensure the centering of the cylinder halves of the insulating ceramic.
  • the single-arm or multi-arm tabs are advantageously worked out of the shield material. Appropriate separating cuts are made for this.
  • the recesses of the cylinder halves are subject to tolerances for the formation of the inner groove, then these can be compensated for by using tabs for each individual ceramic cylinder in order to produce a smooth outer ceramic surface. These must then not overlap the separation point.
  • the insulating jacket of the vacuum interrupter is formed by a ceramic body composed of two cylinder halves 1, 2. These halves are axially aligned with one another and are firmly joined at their separation point 3 by soldering. On both sides of the separation point, the halves are stepped to form an inner groove 4, i.e. with a larger diameter, except.
  • a metallic screen arranged within the vacuum switching chamber and coaxially surrounding the switching contacts is formed from bell-shaped parts 5, 5a. Their goblet-like widening ends 6, 6a can be plugged into one another. The outer end 6 with a larger diameter engages around the inner end 6a.
  • the ends form a rim protruding in the radial direction, with which the screen engages in the groove 4 of the ceramic body for fixing.
  • the outer end 6 of the part 5 covers the separating point 3 with its section extending in the axial direction. From this end, one-armed, push-back tabs 9 are flared outward in the direction of the ceramic body. As shown in FIGS. 1 and 2, these tabs, which are distributed around the circumference, also cover the separation point 3.
  • the diameter circle resulting from the ends of the tabs exhibited is chosen somewhat larger than the inside diameter of the groove 4 in the ceramic body.
  • the cylinder halves 1, 2 of the ceramic body are first placed over the assembled shield.
  • the elastic tabs 9 shown must be a little bit towards the center of the circle be pushed back. This guarantees a tight fit of the screen in the ceramic body.
  • the cylinder halves 1, 2 can easily be centered from the inner groove during assembly. This centering is retained even at the soldering temperature in spite of different temperature coefficients; the tabs simply give way further inside.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

In a housing for a vacuum switch, the insulating ceramic body is assembled from two cylinder halves (1, 2). At the separating point (3), these halves are recessed to form an inner slot (4). A metallic screen, which consists of two parts (5, 5a) and surrounds the switch contacts, projects into this slot for attachment to its mutually facing ends (6, 6a). <??>For the purposes of good installation and easy centring of the ceramic body, the invention provides that the ends (6, 6a) of the screen be designed with axial sections, which project into the slot and can be plugged into one another, and exhibit centring lugs (9, 9a, 9b) from the externally located end (6). <??>The invention allows for the ceramic bodies to operate without additional centring devices. <IMAGE>

Description

Die Erfindung betrifft eine Vakuumschaltkammer mit einem aus zwei Zylinderhälften zusammengesetzen Keramikkörper, der beidseitig von Metalldeckeln verschlossen ist, wel­che von relativ zueinander beweglichen, Schaltkontakte tragenden Leiterbolzen durchgriffen werden. Der Keramik­körper weist entlang seiner umlaufenden Trennstelle eine Innennut zur Halterung eines die Schaltstelle umgebenden zweiteiligen Schirmes auf, dessen abgewinkelte benach­barte Enden in die Innennut eingreifen.The invention relates to a vacuum interrupter chamber with a ceramic body composed of two cylinder halves, which is closed on both sides by metal covers which are penetrated by conductor pins which are movable relative to one another and carry switching contacts. The ceramic body has an inner groove along its circumferential separation point for holding a two-part screen surrounding the switching point, the angled adjacent ends of which engage in the inner groove.

Bei einer solchen, aus der JP-OS 58-181217 bekannten Schaltkammer, dienen die in radialer Richtung hin abge­bogenen, in die Innennut ragenden Enden des Schirmes le­diglich Befestigungszwecken.In such a switching chamber known from JP-OS 58-181217, the ends of the screen which are bent in the radial direction and protrude into the inner groove serve only fastening purposes.

Eine Variante des Bekannten besteht darin, den Schirm einteilig auszuführen und mit einer umfänglichen Aus­drückung in die Innennut ragen zu lassen. Hierbei ist die Trennstelle des Keramikkörpers von dem axialen Ab­schnitt der Ausdrückung überbrückt. Auch diese Ausbil­dung dient der Befestigung des Schirmes.A variant of the known consists in designing the screen in one piece and letting it protrude into the inner groove with an extensive expression. The separation point of the ceramic body is bridged by the axial section of the expression. This training also serves to secure the screen.

Die Aufgabe der Erfindung ist es, die eingangs beschrie­bene Vakuumschaltkammer so auszubilden, daß neben einer zweckmäßigen Befestigung des Schirmes, dieser auch für die Zentrierung der Zylinderhälften der Isolierkeramik sorgen kann.The object of the invention is to design the vacuum interrupter described at the outset in such a way that, in addition to a suitable fastening of the shield, this can also ensure the centering of the cylinder halves of the insulating ceramic.

Gelöst wird diese Aufgabe mit den kennzeichnenden Merk­malen des Anspruches 1, wobei axial ausgerichtete, die Trennstelle des Keramikkörpers überbrückende, ineinan­dergreifende Enden vorhanden sind, und das außenliegende Ende zum Keramikkörper hin gerichtete, umfänglich ver­teilte Laschen trägt.This object is achieved with the characterizing features of claim 1, wherein axially aligned, bridging the separation point of the ceramic body, intermeshing ends are present, and the outer end towards the ceramic body carries circumferentially distributed tabs.

Mit den ausgestellten Laschen ist eine zuverlässige zen­trische Ausrichtung der Zylinderhälften durch den Schirm zusätzlich ermöglicht. Sie werden zu einem geringfügig größeren Durchmesserkreis als die sie aufnehmende Innen­nut ausgestellt. Die Montage geschieht dann mit einer gewissen Vorspannung und garantiert festen Sitz.With the flaps on display, a reliable centric alignment of the cylinder halves is additionally made possible by the screen. They are issued with a slightly larger diameter circle than the inner groove receiving them. The assembly then takes place with a certain preload and guarantees a tight fit.

Die Ausdehnungsunterschiede bei Wärmeeinwirkung, insbe­sondere bei Löttemperatur, zwischen dem metallischen Schirm sowie der Isolierkeramik werden durch die sich zurückstellenden Laschen kompensiert. Bei der Wahl des Schirmmaterials braucht daher auf einer bestimmten Aus­dehnungskoeffizienten keine Rücksicht genommen werden. Somit kann dafür relativ preiswerter Edelstahl zum Einsatz gelangen.The expansion differences under the influence of heat, in particular at the soldering temperature, between the metallic shield and the insulating ceramic are compensated for by the tabs which reset. When choosing the shielding material, there is therefore no need to consider a certain coefficient of expansion. Relatively inexpensive stainless steel can therefore be used.

Die Ineinanderstecken der Schirmteile bewirkt einen für die Montage stabilen Schirm einerseits; anderseits sind damit die Laschenöffnungen von dem innenliegenden Schirmteilende abgedeckt, und der Keramikkörper ist zu­verlässig gegen Lichtbogeneinwirkungen geschützt.The nesting of the screen parts on the one hand creates a stable screen for assembly; on the other hand, the tab openings are thus covered by the inner end of the screen part, and the ceramic body is reliably protected against the effects of arcing.

Die Unteransprüche enthalten zweckmäßige Weiterbildungen des Gegenstandes des Anspruches 1.The sub-claims contain expedient developments of the subject matter of claim 1.

Die ein- oder mehrarmigen Laschen werden in vorteilhaf­ter Weise aus dem Schirmmaterial herausgearbeitet. Dazu werden entsprechende Trennschnitte gelegt.The single-arm or multi-arm tabs are advantageously worked out of the shield material. Appropriate separating cuts are made for this.

Sind die Ausnehmungen der Zylinderhälften für die Bil­dung der Innennut mit Toleranzen behaftet, so können diese zur Herbeiführung einer glatten äußeren Keramik­fläche durch Verwendung von Laschen für jeden einzelnen Keramikzylinder ausgeglichen werden. Diese dürfen dann die Trennstelle nich übergreifen.If the recesses of the cylinder halves are subject to tolerances for the formation of the inner groove, then these can be compensated for by using tabs for each individual ceramic cylinder in order to produce a smooth outer ceramic surface. These must then not overlap the separation point.

Zur Veranschaulichung der Erfindung dient die anliegende beispielhafte Darstellung.The attached exemplary illustration serves to illustrate the invention.

Es zeigen:

  • Figur 1 Einen Halbschnitt durch eine Vakuum­schaltkammer,
  • Figur 2 und 3 vergrößerte Ausschnitte im Bereich der Schirmbefestigung gemäß Einkreisung in Figur 1,
  • Figur 4 den gesamten Schirm im Schnitt und
  • Figur 5 die Ansicht des Schirmes gemäß Ansichts­linie AB der Figur 4.
Show it:
  • FIG. 1 shows a half section through a vacuum interrupter,
  • FIGS. 2 and 3 enlarged sections in the area of the screen fastening according to the encirclement in FIG. 1,
  • Figure 4 shows the entire screen in section and
  • 5 shows the view of the screen according to line AB of FIG. 4.

Die isolierende Mantelhülle der Vakuumschaltkammer ist von einem aus zwei Zylinderhälften 1, 2 zusammengesetzen Keramikkörper gebildet. Diese Hälften stehen axial aus­gerichtet aufeinander und sind an ihrer Trennstelle 3 durch Lötung fest zusammengefügt. Beiderseits der Trenn­stelle sind die Hälften zur Bildung einer Innennut 4 stufenförmig, d.h. mit einem größeren Durchmesser, aus­genommen.The insulating jacket of the vacuum interrupter is formed by a ceramic body composed of two cylinder halves 1, 2. These halves are axially aligned with one another and are firmly joined at their separation point 3 by soldering. On both sides of the separation point, the halves are stepped to form an inner groove 4, i.e. with a larger diameter, except.

Eine innerhalb der Vakuumschaltkammer angeordneter, die Schaltkontakte koaxial umgebender, metallischer Schirm ist aus glockenförmigen Teilen 5, 5a gebildet. Deren kelchartig sich erweiternden Enden 6, 6a sind ineinander steckbar. Das außenliegende Ende 6 mit größerem Durch­messer umgreift das innenliegende Ende 6a.A metallic screen arranged within the vacuum switching chamber and coaxially surrounding the switching contacts is formed from bell-shaped parts 5, 5a. Their goblet-like widening ends 6, 6a can be plugged into one another. The outer end 6 with a larger diameter engages around the inner end 6a.

Die Enden bilden einen in radialer Richtung abstehenden Kranz, mit dem der Schirm zur Fixierung in die Nut 4 des Keramikkörpers eingreift. Das außenliegende Ende 6 des Teiles 5 überdeckt mit seinem in axialier Richtung sich erstreckenden Abschnitt die Trennstelle 3. Von diesem Ende sind einarmige zurückdrückbare Laschen 9 nach außen in Richtung des Keramikkörpers ausgestellt. Wie in Figur 1 und 2 dargestellt, überdecken auch diese, am Umfang verteilten Laschen die Trennstelle 3. Der von den Enden der ausgestellten Laschen sich ergebende Durchmesser­kreis ist etwas größer gewählt als der Innendurchmesser der Nut 4 im Keramikkörper.The ends form a rim protruding in the radial direction, with which the screen engages in the groove 4 of the ceramic body for fixing. The outer end 6 of the part 5 covers the separating point 3 with its section extending in the axial direction. From this end, one-armed, push-back tabs 9 are flared outward in the direction of the ceramic body. As shown in FIGS. 1 and 2, these tabs, which are distributed around the circumference, also cover the separation point 3. The diameter circle resulting from the ends of the tabs exhibited is chosen somewhat larger than the inside diameter of the groove 4 in the ceramic body.

Bei der Montage der sogenannten Lötgruppe der Vakuum­schaltkammer werden zunächst die Zylinderhälften 1, 2 des Keramikkörpers über den zusammengesteckten Schirm gestülpt. Dazu müssen die ausgestellten elastischen La­schen 9 ein klein wenig in Richtung Kreismitte zurückgedrückt werden. Dies garantiert einen strammen Sitz des Schirmes im Keramikkörper. Als zusätzliche Be­festigungsmaßnahme ist es möglich, die Laschenenden an der Trennstelle 3 mit festzulöten. Damit ist ein siche­rer Potentialausgleich zwischen Schirm und leitender, nach außen geführter Trennstelle 3 bewirkt.When assembling the so-called soldering group of the vacuum interrupter, the cylinder halves 1, 2 of the ceramic body are first placed over the assembled shield. To do this, the elastic tabs 9 shown must be a little bit towards the center of the circle be pushed back. This guarantees a tight fit of the screen in the ceramic body. As an additional fastening measure, it is possible to also solder the tab ends to the separation point 3. This results in a secure equipotential bonding between the shield and the conductive disconnection point 3 that leads to the outside.

Mit Hilfe der ausgestellten Laschen 9 lassen sich die Zylinderhälften 1, 2 ohne weiteres schon bei der Montage von der Innennut her zentrieren. Diese Zentrierung bleibt selbst bei Löttemperatur trotz unterschiedlicher Temperaturkoeffizenten erhalten; die Laschen geben ein­fach weiter nach innen nach.With the help of the flaps 9, the cylinder halves 1, 2 can easily be centered from the inner groove during assembly. This centering is retained even at the soldering temperature in spite of different temperature coefficients; the tabs simply give way further inside.

In Figur 3 sind die Zylinderhälften mit unterschiedli­chen Durchmessern zur Bildung der Innennut 4 ausgenom­men. Um diese Toleranzen zur Bildung eines zur Außen­seite hin bündigen Keramikkörpers ausgleichen zu können, sind zwei in axialer Richtung übereinander liegende La­schen 9a, 9b vorgesehen. Diese Laschen sind jeweils ei­ner der Zylinderhälften 1 oder 2 als Zentrierhilfen zu­geteilt und von der Trennstelle 3 zurückversetzt - d.h. von dieser einen Abstand haltend - angeordnet. In Figur 3 ist sichtbar der Toleranzausgleich dadurch herge­stellt, daß die Lasche 9b um ein größeres Maß nach innen gedrückt wurde als die darüber liegende Lasche 9a. Diese Laschen, sowie die in den anderen Figuren gezeigten La­schen 9, sind vorzugsweise, wie in Figur 4 und 5 erkenn­bar, aus dem Material des außenliegenden Endes 6 des einen Schirmteiles durch entsprechend gelegte Trenn­schnitte herausgearbeitet und ausgestellt.In Figure 3, the cylinder halves with different diameters to form the inner groove 4 are excluded. In order to be able to compensate for these tolerances to form a ceramic body which is flush with the outside, two tabs 9a, 9b lying one above the other in the axial direction are provided. These tabs are each assigned to one of the cylinder halves 1 or 2 as centering aids and set back from the separation point 3 - i.e. keeping a distance from this - arranged. In Figure 3, the tolerance compensation is made visible in that the tab 9b has been pressed inward to a greater extent than the tab 9a above. These tabs, as well as the tabs 9 shown in the other figures, are, as can be seen in FIGS. 4 and 5, preferably worked out and exhibited from the material of the outer end 6 of the one screen part by suitably placed separating cuts.

Der Vollständigkeithalber sind in Figur 1 noch die aus­geschalteten Schaltkontakte 7, 7a sowie deren Leiter­bolzen 8, 8a der Vakuumschaltkammer dargestellt.For the sake of completeness, the switched-off switching contacts 7, 7a and their conductor pins 8, 8a of the vacuum interrupter are also shown in FIG.

Claims (4)

1. Vakuumschaltkammer mit einem aus zwei Zylinder­hälften zusammengesetzten Keramikkörper, der beidseitig von Metalldeckeln verschlossen ist, welche von relativ zueinander beweglichen, Schaltkontakte tragenden Leiter­bolzen durchgriffen werden und der Keramikkörper entlang seiner umlaufenden Trennstelle eine Innennut zur Halte­rung eines die Schaltstelle umgebenden zweiteiligen Schirmes aufweist, dessen abgewinkelte benachbarte Enden in die Innennut eingreifen, dadurch gekennzeichnet, daß axial ausgerichtete, die Trennstelle (3) des Keramikkör­pers überbrückende, ineinandergreifende Enden (6, 6a) vorhanden sind, und das außenliegende Ende (6) zum Kera­mikkörper hin gerichtete, umfänglich verteilte Laschen (9, 9a, 9b) trägt.1.Vacuum switching chamber with a ceramic body composed of two cylinder halves, which is closed on both sides by metal covers which are penetrated by conductor pins which are movable relative to one another and carry switch contacts, and the ceramic body has an internal groove along its circumferential separation point for holding a two-part screen surrounding the switching point, the angled one of which Intervening ends engage in the inner groove, characterized in that axially aligned, intermeshing ends (6, 6a) bridging the separation point (3) of the ceramic body are present, and the outer end (6) directed towards the ceramic body and distributed over the circumference , 9a, 9b). 2. Schaltkammer nach Anspruch 1, dadurch gekenn­zeichnet, daß die einarmigen Laschen (9, 9a, 9b) aus den Schirmmaterial herausgearbeitet sind.2. Switching chamber according to claim 1, characterized in that the one-armed tabs (9, 9a, 9b) are worked out from the shield material. 3. Schaltkammer nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß für jede einzelne Zylinderhälfte (1, 2) die Trennstelle (3) des Keramikkörpers nich über­greifende Laschen (9a, 9b) vorhanden sind.3. Switching chamber according to claim 1 or 2, characterized in that for each individual cylinder half (1, 2) the separation point (3) of the ceramic body non-overlapping tabs (9a, 9b) are available. 4. Schaltkammer nach einem Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Laschenenden an der Trennstelle (Lötstelle) (3) des Keramikkörpers festgelö­tet sind.4. Switching chamber according to one of claims 1 or 2, characterized in that the tab ends at the separation point (solder point) (3) of the ceramic body are soldered.
EP89103337A 1988-03-03 1989-02-25 Housing for a vacuum switch Expired - Lifetime EP0335114B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3806921 1988-03-03
DE3806921A DE3806921A1 (en) 1988-03-03 1988-03-03 VACUUM SWITCH CHAMBER

Publications (3)

Publication Number Publication Date
EP0335114A2 true EP0335114A2 (en) 1989-10-04
EP0335114A3 EP0335114A3 (en) 1990-12-12
EP0335114B1 EP0335114B1 (en) 1994-08-10

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ID=6348752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103337A Expired - Lifetime EP0335114B1 (en) 1988-03-03 1989-02-25 Housing for a vacuum switch

Country Status (3)

Country Link
US (1) US4937405A (en)
EP (1) EP0335114B1 (en)
DE (2) DE3806921A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996029718A1 (en) * 1995-03-17 1996-09-26 Siemens Aktiengesellschaft Vacuum interrupter
FR3066311A1 (en) * 2017-05-15 2018-11-16 Schneider Electric Industries Sas DEVICE FOR CENTERING A METAL SCREEN IN A VACUUM BULB, AND VACUUM BULB COMPRISING SUCH A DEVICE

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
DE3932159A1 (en) * 1989-09-27 1991-04-04 Calor Emag Elektrizitaets Ag Vacuum switch chamber for HV switch - has spring steel elements projecting from ring fitted to central section of condensation screen
DE9303207U1 (en) * 1993-03-05 1993-04-22 Abb Patent Gmbh, 6800 Mannheim, De
DE19517288A1 (en) * 1995-05-11 1996-11-14 Abb Patent Gmbh Vacuum interrupter tube arrangement
DE19625737B4 (en) * 1995-07-25 2007-05-03 Abb Patent Gmbh Vacuum interrupter chamber
GB2308498B (en) * 1995-12-21 2000-04-19 Gec Alsthom Ltd Electrically conductive shield for a vacuum switching device
DE19946570B4 (en) * 1999-09-29 2007-07-05 Abb Patent Gmbh Vacuum chamber
DE102008037112B4 (en) * 2008-08-07 2010-07-08 Siemens Aktiengesellschaft Vacuum interrupter
US8039771B2 (en) * 2008-08-11 2011-10-18 Eaton Corporation Vacuum envelope including self-aligning end shield, vacuum interrupter, vacuum circuit interrupter and method including the same
WO2012042294A1 (en) * 2010-10-01 2012-04-05 Abb Technology Ltd Compact vacuum interrupter with selective encapsulation
DE102014213100A1 (en) * 2014-07-07 2016-01-07 Siemens Aktiengesellschaft Electrical component with an electrically conductive central component

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GB1184590A (en) * 1967-11-29 1970-03-18 Ass Elect Ind Improvements in or relating to Vacuum Electric Switches.
GB1197886A (en) * 1966-10-28 1970-07-08 Ass Elect Ind Improvements in or relating to Vacuum Electric Switches
US3777089A (en) * 1972-08-21 1973-12-04 Allis Chalmers Vacuum interrupter
DE3344643A1 (en) * 1983-12-09 1985-06-20 Siemens AG, 1000 Berlin und 8000 München Vacuum switching tube for medium-voltage switching apparatuses
DE3529284A1 (en) * 1985-08-16 1987-02-26 Calor Emag Elektrizitaets Ag Vacuum switching chamber

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US3514559A (en) * 1967-03-27 1970-05-26 Mc Graw Edison Co Vacuum type circuit interrupter
JPS58181217A (en) * 1982-04-16 1983-10-22 株式会社東芝 Vacuum valve
DE3507949A1 (en) * 1985-03-06 1986-09-11 Siemens AG, 1000 Berlin und 8000 München Contact arrangement for vacuum switches
DE3719256C2 (en) * 1987-06-10 1993-11-04 Calor Emag Elektrizitaets Ag VACUUM SWITCHING CHAMBER

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
GB1197886A (en) * 1966-10-28 1970-07-08 Ass Elect Ind Improvements in or relating to Vacuum Electric Switches
GB1184590A (en) * 1967-11-29 1970-03-18 Ass Elect Ind Improvements in or relating to Vacuum Electric Switches.
US3777089A (en) * 1972-08-21 1973-12-04 Allis Chalmers Vacuum interrupter
DE3344643A1 (en) * 1983-12-09 1985-06-20 Siemens AG, 1000 Berlin und 8000 München Vacuum switching tube for medium-voltage switching apparatuses
DE3529284A1 (en) * 1985-08-16 1987-02-26 Calor Emag Elektrizitaets Ag Vacuum switching chamber

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996029718A1 (en) * 1995-03-17 1996-09-26 Siemens Aktiengesellschaft Vacuum interrupter
US5847347A (en) * 1995-03-17 1998-12-08 Siemens Aktiengesellschaft Vacuum interrupter
CN1068964C (en) * 1995-03-17 2001-07-25 西门子公司 Vacuum interrupter
FR3066311A1 (en) * 2017-05-15 2018-11-16 Schneider Electric Industries Sas DEVICE FOR CENTERING A METAL SCREEN IN A VACUUM BULB, AND VACUUM BULB COMPRISING SUCH A DEVICE
EP3404688A1 (en) * 2017-05-15 2018-11-21 Schneider Electric Industries SAS Device for centring a metal screen in a vacuum interrupter, and vacuum interrupter comprising such a device

Also Published As

Publication number Publication date
EP0335114B1 (en) 1994-08-10
DE3806921C2 (en) 1992-03-26
US4937405A (en) 1990-06-26
DE3806921A1 (en) 1989-09-14
DE58908160D1 (en) 1994-09-15
EP0335114A3 (en) 1990-12-12

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