EP0380980B2 - Vacuum switch - Google Patents

Vacuum switch Download PDF

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Publication number
EP0380980B2
EP0380980B2 EP90101077A EP90101077A EP0380980B2 EP 0380980 B2 EP0380980 B2 EP 0380980B2 EP 90101077 A EP90101077 A EP 90101077A EP 90101077 A EP90101077 A EP 90101077A EP 0380980 B2 EP0380980 B2 EP 0380980B2
Authority
EP
European Patent Office
Prior art keywords
housing
vacuum switch
connector element
passage
section
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.)
Expired - Lifetime
Application number
EP90101077A
Other languages
German (de)
French (fr)
Other versions
EP0380980A1 (en
EP0380980B1 (en
Inventor
Bruno Lippi
Ernst Suter
Thomas Meier
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.)
General Electric Switzerland GmbH
Original Assignee
GEC Alsthom T&D 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
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Application filed by GEC Alsthom T&D AG filed Critical GEC Alsthom T&D AG
Priority to AT90101077T priority Critical patent/ATE98398T1/en
Publication of EP0380980A1 publication Critical patent/EP0380980A1/en
Publication of EP0380980B1 publication Critical patent/EP0380980B1/en
Application granted granted Critical
Publication of EP0380980B2 publication Critical patent/EP0380980B2/en
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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
    • H01H33/6606—Terminal 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
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings

Definitions

  • the present invention relates to a vacuum switch for medium voltage according to the preamble of claims 1 and 7.
  • a vacuum interrupter is arranged in a cylindrical housing made of insulating material.
  • a connection element is provided above this vacuum interrupter chamber, the clamping part of which is arranged in the interior of the housing and clamps and clamps a connecting pin of the vacuum interrupter chamber which projects in the axial direction.
  • This clamping part is screwed to a connection bolt penetrating the housing in the radial direction through a corresponding passage.
  • the clamping part has a pin which engages in a blind hole-like recess in the housing which is diametrically opposite to the passage.
  • the connecting bolt inserted into the passage from the outside is flange-like and is screwed to the housing from the outside.
  • the switching chamber When assembling the vacuum switch, the switching chamber, together with the pre-assembled clamping part, is eccentrically inserted into the housing from above and aligned in such a way that when the pins are subsequently centered, they come to rest in the recess. Then the connecting bolt is pushed in the radial direction from the outside through the passage and screwed to the clamping part and to the housing.
  • This known vacuum switch is complex in construction and assembly and requires an inner diameter of the housing, which allows the eccentric insertion of the clamping part together with the vacuum interrupter enables.
  • Fastening the vacuum interrupter chamber in the axial direction on the connecting element requires little space, in particular in the radial direction, and permits a very simple type of fastening, for example by means of a screw.
  • the slim design of the connecting element that can be achieved in this way enables the insertion of a one-piece connecting element through a passage that does not make it necessary to enlarge the housing.
  • connection element to be attached to the housing in a highly simple manner. Furthermore, this gives the possibility of attaching connecting elements of different cross-section to the housing without changes by simply inserting another holding element on the housing.
  • a further preferred embodiment of the vacuum switch according to the invention allows easy attachment of a connection element, which is smaller in height and width than the cross section of the passage.
  • connecting elements of different cross-section are securely held in a single recess in the housing.
  • connection element is fastened to the housing at a support point opposite the passage.
  • the connecting element is thus fixed to the housing at the support point with respect to its longitudinal direction and is supported in the transverse direction at the passage and also at the support point.
  • the housing has a further passage running in the radial direction, which is penetrated by a pin on the connection element, on which an anchoring part sits on the outside of the housing.
  • the pin can thus have a thread on which a nut is seated in order to fasten the connecting element to the housing.
  • the anchoring part is covered by a cover made of insulating material. This increases the dielectric strength.
  • the vacuum switch for medium voltage shown purely schematically in FIGS. 1 to 3 has a vacuum switching chamber 12 arranged in a cylindrical housing 10 made of insulating plastic. Above the vacuum switching chamber 12, a connection element 14 is led out in the radial direction, parallel to it and below the vacuum switching chamber 12, a connecting part 16 is led out of the housing 10 in order to electrically connect the vacuum switching chamber 12 to connection conductors or busbars, not shown.
  • the essentially cylindrical vacuum interrupter chamber 12 the longitudinal axis of which is designated by 18 and indicated by dash-dotted lines, is of a generally known type and has switching contacts 22, 24 in a switching chamber housing 20 made of insulating material (FIG. 1).
  • the upper fixed switching contact 22 is arranged on the end face of a contact pin 26 which is passed through the switching chamber housing 20 in the axial direction and is fixedly connected to the latter.
  • the contact pin 26 bears against a contact surface 28 of the connection element 14 and is fastened thereon by means of a screw 30 extending in the axial direction.
  • the vacuum interrupter 12 is therefore carried by the connection element 14.
  • the lower, movable switching contact 24 is arranged on the end face of a contact plunger 32 which extends downward in the axial direction out of the switching chamber housing 20 and which, by means of a drive 34 which is only indicated schematically, in the direction of the axis 18 from an on position shown in FIG. 1 to an off position and can be brought back.
  • the contact plunger 32 is electrically connected to the connecting part 16 by means of a roller contact arrangement 36 (FIG. 3).
  • the cylindrical housing 10 which is arranged coaxially to the vacuum interrupter chamber 12, has a passage 38 for the connecting element 14 in the radial direction, which is adapted to the cross section of the connecting element 14.
  • the connecting element 14 is a profile piece with a square cross section with rounded corners, the longitudinal axis of which is designated by 40.
  • the connecting element 14 is tapered in its section 42 arranged in the housing 10 in the direction of the longitudinal axis 18 of the vacuum switching chamber 12 and rests with its end face 44 on this side against the inner lateral surface 46 of the housing 10.
  • the surface of section 42 that comes to lie at the bottom during assembly forms the contact surface 28 against which the contact pin 26 rests.
  • a further passage 48 is provided in the housing 10 diametrically opposite the passage 38 and is penetrated by a pin 50 provided on the end face on the connecting element 14.
  • the pin 50 has a thread, not shown, into which a nut 52 is screwed in order to fasten the connecting element 14 to the housing 18.
  • the nut 52 is covered by a pocket-shaped cover 54 which is open in the axial direction and is formed on the housing 10.
  • the connecting element 14 is covered over part of its length projecting beyond the housing 10 by a tubular cover element 56 molded onto the housing 10.
  • the connection element 14 is thus supported on the one hand on the cover element 56 and on the passage 38 and on the other hand on the passage 48 by means of the pin 50 and is held on the housing 10 in the direction of its longitudinal axis 40 by means of the screw connection 50, 52.
  • the vacuum switch is designed as a disconnect switch and has a disconnect contact 58 with spring-loaded contact fingers 60 at the free end of the connecting element 14.
  • the housing 10 has an intermediate base 62 below the vacuum interrupter chamber 12 with an opening 64 for the contact plunger 32.
  • the integrally formed connecting part 16 is fastened to this intermediate floor 62 with its section 66 arranged in the housing 10 from below by means of two screws 68 and nuts 70 running in the axial direction.
  • the connecting part 16 is led out of the housing 10 through a passage 72 which extends in the radial direction directly below the intermediate base 62 and has a substantially square cross section with rounded corners in its part projecting beyond the housing 10.
  • the section 66 of the connecting part 16 arranged in the housing is widened in the shape of a blade, as can be seen in particular from FIG. 3.
  • a passage 74 running in the direction of the longitudinal axis 18 is provided, in which the roller contact arrangement 36 is arranged and through which the contact plunger 32 is guided.
  • This passage 74 is of symmetrical design with respect to a plane in which the longitudinal axis 18 of the housing 10 and the longitudinal axis of the connecting part 16, which is denoted by 75, has an essentially square cross section and is symmetrical towards the plane in the direction of the longitudinal axis and protrudes toward the inside 18 running noses 76.
  • a curvature is provided on these lugs 76 at their mutually directed end regions, which corresponds approximately to the curvature of the contact plunger 32.
  • the roller contact arrangement 36 has a roller cage 78 with two mutually parallel plates 80 which are connected to one another by means of two shafts 82 running in the direction of the longitudinal axis 75 of the connecting part 16. These shafts 82 run on both sides of the contact plunger 32 and a pair of conical contact rollers 84 directed against each other sits on them. These contact rollers 84 are connected to the corresponding lug 76 and the contact plunger 32 by means of compression springs 86, only one of which is shown in FIG. 3 pressed. When the switching plunger 32 moves, the contact rollers 84 roll on the lugs 76 and on the contact plunger 32, as a result of which the roller cage 78 rotates half the stroke of the contact plunger 32.
  • the connecting part 16 is covered over part of its length protruding beyond the housing 10 by a tubular cover element 88 molded onto the housing 10, the clear width of which is dimensioned such that the inner section 66 is introduced into the housing 10 from the outside through this cover element 88 can be.
  • the connecting part 16 also has a disconnecting contact 58 with contact fingers 60 at its free end.
  • a carriage At the lower end of the housing 10, a carriage, not shown, is provided, by means of which the vacuum switch can be displaced in the longitudinal direction of the connecting element 14 and the connecting part 16 in order to bring the isolating contacts 58 into and out of connection with counter contacts, not shown. It goes without saying that, depending on the number of phases, a plurality of housings 10 with switching chambers 12 can be arranged on a carriage.
  • the connecting part 16 When assembling the vacuum switch, the connecting part 16 is first led with its section 66 ahead through the cover element 88 and the passage 72 from the outside into the housing 10 and fastened to the intermediate floor 62 by means of the screws 68 and nuts 70.
  • the vacuum switching chamber 12 is then lowered from above into the housing 10 together with the roller contact arrangement 36 seated on the contact plunger 32, and the roller contact arrangement 36 is thereby introduced into the passage 74 in the section 66 of the connecting part 16.
  • the connecting element 14 is then pushed with its pin 50 ahead through the cover element 56 and the passage 38 until the end face 44 abuts the inner circumferential surface 46 of the housing 10 and the pin 50 pierces the passage 48.
  • the connecting element 14 is fixed by placing and tightening the nut 52 on the pin 50.
  • the nut 52 can be put on and tightened without problems through the pocket-shaped opening between the housing 10 and the cover 54.
  • the vacuum interrupter 12 is now fastened to the connection element 14 with the screw 30.
  • connection element 14 and the connection part 16 do not necessarily have to be fixed to the housing 10 or to the intermediate floor 62 by means of screws and nuts, it is also conceivable that snap connections or clamp connections are provided.
  • the cross sections of the connecting element 14 and the connecting part 16 can have any suitable shape, for example they can be round.
  • the intermediate floor can also be formed by flange-like lugs protruding against the interior of the housing.
  • the connecting lines instead of isolating contacts 58, it is also conceivable for the connecting lines to be fastened directly to the connecting element 14 or connecting part 16, for example by means of screws.
  • an upper connection area 110 of a further embodiment of a vacuum switch for medium voltage is shown purely schematically in a vertical section or in a view.
  • This has an essentially tubular housing 112 made of insulating plastic with an approximately square cross section.
  • a vacuum switching chamber 114 is arranged in the housing 112, of which only the upper end region is shown in FIG. 4.
  • the axis of the vacuum interrupter chamber is indicated at 114 'and runs in the same direction as the longitudinal axis of the housing 112.
  • a one-piece connection element 116 is led out of the housing 112 in a direction perpendicular to the axis 114' in order to enclose the vacuum interrupter chamber 114 with in to electrically connect the figures, not shown, but generally known connecting conductors or busbars.
  • the substantially cylindrical vacuum interrupter chamber 112 is of a generally known type (cf. also FIG. 1) and has a connection surface 118 at the top, which is of a known type and Is electrically connected to a fixed switching contact provided inside the vacuum interrupter 114.
  • the vacuum switching chamber 114 bears with its connection surface 118 against the connection element 116, which is essentially rectangular in cross section, and is fastened to it by means of two screws 120 running in the direction of the axis 114 '.
  • the tubular housing 112 encompassing the vacuum switching chamber 114 has a passage 122 for the connection element 116, the cross section of which is essentially rectangular, as can be seen in particular from FIG. 5.
  • the width B of the passage 122 essentially corresponds to the width of the connection element 116, whereas the height H of the passage 122 is greater than the corresponding dimension of the connection element 116.
  • the housing 112 has a support tongue 124 in the area of the passage 122, which extends from below into Direction protrudes against the connection element 116 and on which the connection element 116 abuts on the end face.
  • a wedge-shaped holding element 126 is provided above the connecting element 116 in the free area of the passage 122 between the connecting element 116 and the housing 112. This is inserted into the passage 122 from the outside and, with its wedge surface 126 ′, abuts the correspondingly beveled end wall 128 of the housing 112 and wedges the connecting element 116 in the passage 122.
  • the holding element 126 points in its area projecting into the interior of the housing 112 Elongated hole 130 extending in the longitudinal direction of the connection element 116, through which a fastening screw 132 extending in the direction of the axis 114 'is passed, which is screwed into the connection element 116 for clamping the holding element 126.
  • the head of the fastening screw 132 is supported in a groove 133 in the holding element 116, the base surface of which runs at right angles to the axis 114 '.
  • a tubular extension 134 is integrally formed on the housing 112, which extends around the connection element 116 in the direction away from the housing 112 over a part of its length at a distance.
  • a support point 136 for the connection element 116 is provided on the housing 112 opposite the passage 122 (FIGS. 6 and 7).
  • housing 112 has a substantially cuboid recess 138, which is surrounded by a bulge 140 projecting towards the outside.
  • the width B 'of the recess 138 corresponds essentially to the width of the connecting element 116 and the height H' of the recess 138 is less than the height of the connecting element 116 over its length, with the exception of its end region 116 'on this side.
  • the height of the connection element 116 is tapered in steps, so that the cross section of the area of the connection element 116 which extends into the recess 138 essentially corresponds to the cross section of the recess 138.
  • the recess 138 has a recess 142 in the central region which, as shown in FIG. 7, extends over the entire height H 'of the recess 138 and corresponds in its width approximately to the width of the support tongue 124 (FIG. 5). With its end face 116 "on this side, the connection element 116 is in the recess 138 on the housing 112, with the exception of the area of the recess 142. The connection element 116 is thus supported in the recess 138 in the direction of the height and the width as well as in the direction of its longitudinal extent.
  • connection element 116 To fasten the connection element 116 to the housing 112, the latter is pushed through from the outside through the passage 122 and inserted with the end region 116 ′ into the recess 138 until the end face 116 ′′ in the recess 138 on the housing 112. Then the wedge-shaped holding element 126 pushed from the outside between the connecting element 116 and the end wall 128 on the housing 112 until it is stuck there and presses the connecting element 116 against the supporting tongue 124. The holding element 126 is then fixed with the fastening screw 132. Finally, the vacuum switching chamber 114 is fastened with the screws 120 Connection element 116 attached.
  • FIGS. 8 to 11 show in a corresponding representation like FIGS. 4 to 7 the upper connection area 10 of the same housing 112, but the connection element 144 is smaller than the connection element 116 both in terms of width and height. Since this is shown in FIGS 8 to 11 shown housing 112 corresponds exactly to the housing shown in Figures 4 to 7, this is only described to the extent that this is necessary for understanding.
  • connection element 144 corresponds essentially to the height H 'of the recess 138 and recess 142.
  • the width of the connection element 144 is approximately equal to the width of the support tongue 124 and the recess 142. With its end region 144' facing the recess 138, the connection element 144 engages into the recess 142 of the recess 138 and its end face 144 ′′ is in contact with the housing 112. At the end region on this side, the connecting element 144 is thus in the recess 142 both in the direction of the width and in the height and in the direction of the longitudinal extent of the connecting element 144 supported.
  • connection element 144 rests on the supporting tongue 124 and is pressed against it by means of a wedge-shaped holding member 146 and held in a wedged manner in the passage 122.
  • the holding member 146 is inserted with respect to the connecting element 144 opposite the supporting tongue 124 into the free area between the connecting element 144 and the housing 112 of the passage 122. With its wedge surface 146 ', the holding member 146 bears against the correspondingly bevelled end wall 128 of the housing 112.
  • lateral, downwardly projecting holding flanks 148 are formed, which laterally engage around the connecting element 144 and the supporting tongue 124.
  • the holding flanks 148 of the holding member 146 fix the connecting element 144 to the supporting tongue 124 in the width direction.
  • the height of the holding element 146 is larger than that of the holding element 126 (FIGS. 4 and 5) in order to be able to compensate for the free area between the holding element 146 and the end wall 128 which is enlarged in accordance with the smaller height of the connecting element 144.
  • the holding member 146 has the elongated hole 130 which extends in the longitudinal extent of the connection element 144 and through which the fastening screw 132 screwed into the connection element 144 extends. The head of the fastening screw 132 is supported in the groove 133 on the holding member 146.
  • connection element 116 or 144 The necessary cross section of the connection element 116 or 144 is determined by the current to be carried.
  • the connecting element 116 shown in FIGS. 4 to 7 can thus carry larger currents than the connecting element 144 with a smaller cross section according to FIGS. 8 to 11.
  • the vacuum interrupters 114 can also be designed differently according to the nominal and short-circuit currents to be conducted and interrupted.
  • the vacuum interrupter chamber 114 shown in FIG. 8 has a lower height than the vacuum interrupter chamber 114 shown in FIG. 4.
  • a sleeve 150 made of electrically conductive material is arranged between the connection surface 118 of the vacuum switching chamber 114 and the connection element 144, which is penetrated by the screw 120 fixing the vacuum switching chamber 114 to the connection element 144 .
  • the axis of the vacuum interrupter is designated 114 '.
  • connection element 144 When the one-piece connection element 144 is assembled, it is passed from the outside through the passage 122 and its end region 144 ′ is introduced into the recess 142 of the recess 138 until its end face 144 ′′ is in contact with the housing 112. The holding member 146 is then opened the connection element 144 is placed and pressed between it and the wall 128. The holding member 146 is then fixed to the connection element 144 with the fastening screw 132. The connection element 144 is thus in the region of the support point 136 in the recess 142 and in the region of the passage 122 through the support tongue 124 and the holding member 146 aligned and securely held in all directions, the holding flanks 148 ensure an exact alignment of the connecting element 144 with respect to the supporting tongue 124. Finally, the vacuum switching chamber 114 is then screwed into the connecting element 144 with the screw 120 on the connecting element 144 Direction g of the axis 114 'attached.
  • connection element 116 or 144 is made of flat semifinished product.
  • the corners or edges of the connection element 116, 144 are rounded in order to avoid high field strengths and partial discharges. Only minor machining operations are necessary on the profile-shaped connecting element 116, 144.
  • the holes for the screws 120 and the thread for the fastening screw 132 and, if appropriate, a contact area in order to ensure a low-resistance current transfer between the vacuum switching chamber 114 or the sleeve 150 and the connecting element 116, 144 are to be provided on the connecting element 116, 144.
  • connection elements 116 the height of which is greater than the height H 'of the recess 138
  • the end region 116' is to be machined accordingly in order to ensure the engagement in the recess 138.
  • Housing 112 is advantageously molded or molded in one piece.
  • the housing 112 can of course also be designed as a hollow cylinder.
  • the passage 122 and the support point 136 are preferably located on two opposite, flat sides of the housing 112.

Landscapes

  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Push-Button Switches (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Die vorliegende Erfindung betrifft einen Vakuumschalter für Mittelspannung gemäss dem Oberbegriff des Anspruchs 1 und 7.The present invention relates to a vacuum switch for medium voltage according to the preamble of claims 1 and 7.

Ein solcher Vakuumschalter ist aus der DE-OS 35 44 972 bekannt. In einem zylinderförmigen Gehäuse aus Isoliermaterial ist eine Vakuumschaltkammer angeordnet. Oberhalb dieser Vakuumschaltkammer ist ein Anschlusselement vorgesehen, dessen im Gehäuseinneren angeordneter Klemmteil einen in axialer Richtung vorstehenden Anschlusszapfen der Vakuumschaltkammer umfasst und festklemmt. Dieser Klemmteil ist mit einem das Gehäuse in radialer Richtung durch einen entsprechenden Durchlass durchdringenden Anschlussbolzen verschraubt. Am vom Anschlussbolzen entfernten Ende weist der Klemmteil einen Zapfen auf, der in eine zum Durchlass diametral gegenüberliegende sacklochartige Ausnehmung im Gehäuse eingreift. Der von aussen in den Durchlass eingeführte Anschlussbolzen ist flanschartig ausgebildet und von der Aussenseite her mit dem Gehäuse verschraubt. Bei der Montage des Vakuumschalters wird die Schaltkammer zusammen mit dem daran vormontierten Klemmteil von oben exzentrisch in das Gehäuse eingeführt und derart ausgerichtet, dass bei der anschliessenden Zentrierung der Zapfen in die Ausnehmung zu liegen kommt. Dann wird der Anschlussbolzen in radialer Richtung von aussen durch den Durchlass gestossen und mit dem Klemmteil und mit dem Gehäuse verschraubt. Dieser bekannte Vakuumschalter ist aufwendig in der Konstruktion und Montage und benötigt einen Innendurchmesser des Gehäuses, der das exzentrische Einführen des Klemmteils zusammen mit der Vakuumschaltkammer ermöglicht.Such a vacuum switch is known from DE-OS 35 44 972. A vacuum interrupter is arranged in a cylindrical housing made of insulating material. A connection element is provided above this vacuum interrupter chamber, the clamping part of which is arranged in the interior of the housing and clamps and clamps a connecting pin of the vacuum interrupter chamber which projects in the axial direction. This clamping part is screwed to a connection bolt penetrating the housing in the radial direction through a corresponding passage. At the end remote from the connecting bolt, the clamping part has a pin which engages in a blind hole-like recess in the housing which is diametrically opposite to the passage. The connecting bolt inserted into the passage from the outside is flange-like and is screwed to the housing from the outside. When assembling the vacuum switch, the switching chamber, together with the pre-assembled clamping part, is eccentrically inserted into the housing from above and aligned in such a way that when the pins are subsequently centered, they come to rest in the recess. Then the connecting bolt is pushed in the radial direction from the outside through the passage and screwed to the clamping part and to the housing. This known vacuum switch is complex in construction and assembly and requires an inner diameter of the housing, which allows the eccentric insertion of the clamping part together with the vacuum interrupter enables.

Es ist daher eine Aufgabe der vorliegenden Erfindung, einen Vakuumschalter vorzuschlagen, der äusserst einfach aufgebaut und montierbar ist und dessen Gehäuse nicht wesentlich grösser zu sein braucht als die Vakuumschaltkammer.It is therefore an object of the present invention to propose a vacuum switch which is extremely simple in construction and assembly and whose housing need not be significantly larger than the vacuum interrupter.

Diese Aufgabe wird durch einen gattungsgemässen Vakuumschalter, der die Merkmale des kennzeichnenden Teiles des Anspruchs 1 bzw. 7 aufweist, gelöst.This object is achieved by a generic vacuum switch, which has the features of the characterizing part of claims 1 and 7, respectively.

Das Befestigen der Vakuumschaltkammer in axialer Richtung am Anschlusselement benötigt, insbesondere in radialer Richtung, wenig Platz und erlaubt eine sehr einfache Befestigungsart, beispielsweise mittels einer Schraube. Die dadurch erzielbare schlanke Ausbildung des Anschlusselementes ermöglicht das Einführen eines einstückigen Anschlusselementes durch einen Durchlass der ein Vergrössern des Gehäuses nicht erforderlich macht.Fastening the vacuum interrupter chamber in the axial direction on the connecting element requires little space, in particular in the radial direction, and permits a very simple type of fastening, for example by means of a screw. The slim design of the connecting element that can be achieved in this way enables the insertion of a one-piece connecting element through a passage that does not make it necessary to enlarge the housing.

Der erfindungsgemässen Vakuumschalters gemäss Anspruch 1 erlaubt ein höchst einfaches Befestigen des Anschlusselementes am Gehäuse. Im weitern ist dadurch die Möglichkeit gegeben, Anschlusselemente unterschiedlichen Querschnittes ohne Aenderungen am Gehäuse einzig durch das Einfügen eines anderen Halteelementes am Gehäuse zu befestigen.The vacuum switch according to the invention allows the connection element to be attached to the housing in a highly simple manner. Furthermore, this gives the possibility of attaching connecting elements of different cross-section to the housing without changes by simply inserting another holding element on the housing.

Eine weitere bevorzugte Ausbildungsform des erfindungsgemässen Vakuumschalters gemäss Anspruch 3 erlaubt eine problemlose Befestigung eines Anschlusselementes, das sowohl in der Höhe als auch in der Breite kleiner ist als der Querschnitt des Durchlasses.A further preferred embodiment of the vacuum switch according to the invention allows easy attachment of a connection element, which is smaller in height and width than the cross section of the passage.

Bei einer Ausbildungsform gemäss Anspruch 5 werden Anschlusselemente unterschiedlichen Querschnittes in einer einzigen Ausnehmung im Gehäuse sicher gehalten.In an embodiment according to claim 5, connecting elements of different cross-section are securely held in a single recess in the housing.

Beim erfindungsgemässen Vakuumschalter gemäss Anspruch 7 ist das einstückig ausgebildete Anschlusselement an einer dem Durchlass gegenüberliegenden Stützstelle am Gehäuse befestigt. Das Anschlusselement ist somit bezüglich seiner Längsrichtung bei der Stützstelle am Gehäuse festgehalten und ist in Querrichtung am Durchlass und ebenfalls an der Stützstelle abgestützt. Diese Ausbildungsform benötigt, insbesondere im Bereich des Durchlasses, wenig Platz, ermöglicht eine einfache Befestigung des Anschlusselementes und eine einfache Ausbildung sowohl des Anschlusselementes als auch des Gehäuses.In the vacuum switch according to the invention, the one-piece connection element is fastened to the housing at a support point opposite the passage. The connecting element is thus fixed to the housing at the support point with respect to its longitudinal direction and is supported in the transverse direction at the passage and also at the support point. This form of training requires little space, in particular in the area of the passage, enables simple attachment of the connection element and simple formation of both the connection element and the housing.

Das Gehäuse weist an der Stützstelle einen weiteren in radialer Richtung verlaufenden Durchlass auf, der von einem Zapfen am Anschlusselement durchsetzt ist auf welchem auf der Aussenseite des Gehäuses ein Verankerungsteil sitzt. So kann der Zapfen ein Gewinde aufweisen, auf welchem eine Mutter sitzt, um das Anschlusselement am Gehäuse zu befestigen. Eine solche Ausbildungsform erlaubt eine sehr einfache Montage.At the support point, the housing has a further passage running in the radial direction, which is penetrated by a pin on the connection element, on which an anchoring part sits on the outside of the housing. The pin can thus have a thread on which a nut is seated in order to fasten the connecting element to the housing. Such a form of training allows very simple assembly.

Der Verankerungsteil ist von einer Abdeckung aus Isolierstoff überdeckt. Dadurch wird die dielektrische Festigkeit erhöht.The anchoring part is covered by a cover made of insulating material. This increases the dielectric strength.

Weitere bevorzugte Ausbildungsformen sind in den weiteren abhängigen Ansprüchen angegeben.Further preferred forms of training are specified in the further dependent claims.

Die Erfindung wird nun anhand in den Zeichnung dargestellten Ausführungsbeispielen näher erläutert.The invention will now be explained in more detail with reference to exemplary embodiments shown in the drawing.

Es zeigen rein schematisch:

Fig. 1
einen Vertikalschnitt durch einen Vakuumschalter gemäss einer ersten Ausildungsform,
Fig. 2 und 3
in Draufsicht bzw. Untersicht den Vakuumschalter, wobei das Gehäuse entlang der Linie II-II bzw. III-III der Figur 1 geschnitten dargestellt ist,
Fig. 4
einen Vertikalschnitt durch einen Vakuumschalter gemäss einer zweiten Ausbildungsform im Bereich eines Anschlusselementes,
Fig. 5
eine Ansicht desselben Bereichs des Vakuumschalters in Richtung des Pfeiles V gemäss Figur 4,
Fig. 6 und 7
Schnitte entlang den Linien VI-VI bzw. VII-VII gemäss Figur 4,
Fig. 8
in derselben Darstellung wie Fig. 4 den Anschlussbereich des Vakuumschalters mit einem im Querschnitt kleinere Anschlusselement,
Fig. 9
eine Ansicht des Anschlussbereichs in Richtung des Pfeiles IX der Figur 8, und
Fig. 10 und 11
Schnitte entlang den Linien X-X bzw. XI-XI gemäss Figur 8.
It shows purely schematically:
Fig. 1
a vertical section through a vacuum switch according to a first embodiment,
2 and 3
The vacuum switch in plan view or bottom view, the housing being shown in section along the line II-II or III-III of FIG. 1,
Fig. 4
a vertical section through a vacuum switch according to a second embodiment in the area of a connection element,
Fig. 5
3 shows a view of the same area of the vacuum switch in the direction of arrow V according to FIG. 4,
6 and 7
Sections along lines VI-VI and VII-VII according to FIG. 4,
Fig. 8
in the same representation as FIG. 4, the connection area the vacuum switch with a connection element that is smaller in cross section,
Fig. 9
a view of the connection area in the direction of arrow IX of Figure 8, and
10 and 11
Sections along lines XX and XI-XI according to FIG. 8.

Der in den Figuren 1 bis 3 rein schematisch dargestellte Vakuumschalter für Mittelspannung weist eine in einem zylindrischen Gehäuse 10 aus isolierendem Kunststoff angeordnete Vakuumschaltkammer 12 auf. Oberhalb der Vakuumschaltkammer 12 ist in radialer Richtung ein Anschlusselement 14, parallel dazu und unterhalb der Vakuumschaltkammer 12 ein Anschlussteil 16 aus dem Gehäuse 10 herausgeführt, um die Vakuumschaltkammer 12 mit nicht dargestellten Anschlussleitern oder Sammelschienen elektrisch zu verbinden.The vacuum switch for medium voltage shown purely schematically in FIGS. 1 to 3 has a vacuum switching chamber 12 arranged in a cylindrical housing 10 made of insulating plastic. Above the vacuum switching chamber 12, a connection element 14 is led out in the radial direction, parallel to it and below the vacuum switching chamber 12, a connecting part 16 is led out of the housing 10 in order to electrically connect the vacuum switching chamber 12 to connection conductors or busbars, not shown.

Die im wesentlichen zylinderförmige Vakuumschaltkammer 12, deren Längsachse mit 18 bezeichnet und strichpunktiert angegeben ist, ist allgemein bekannter Bauart und weist in einem Schaltkammergehäuse 20 aus Isolierstoff Schaltkontakte 22, 24 auf (Fig. 1). Der obere feststehende Schaltkontakt 22 ist an der Stirnseite eines Kontaktstiftes 26 angeordnet, welcher in Axialrichtung durch das Schaltkammergehäuse 20 hindurchgeführt und mit diesem fest verbunden ist. Stirnseitig liegt der Kontaktstift 26 an einer Kontaktfläche 28 des Anschlusselementes 14 an und ist an diesem mittels einer in Axialrichtung verlaufenden Schraube 30 befestigt. Die Vakuumschaltkammer 12 wird also vom Anschlusselement 14 getragen.The essentially cylindrical vacuum interrupter chamber 12, the longitudinal axis of which is designated by 18 and indicated by dash-dotted lines, is of a generally known type and has switching contacts 22, 24 in a switching chamber housing 20 made of insulating material (FIG. 1). The upper fixed switching contact 22 is arranged on the end face of a contact pin 26 which is passed through the switching chamber housing 20 in the axial direction and is fixedly connected to the latter. On the face side, the contact pin 26 bears against a contact surface 28 of the connection element 14 and is fastened thereon by means of a screw 30 extending in the axial direction. The vacuum interrupter 12 is therefore carried by the connection element 14.

Der untere, bewegliche Schaltkontakt 24 ist an der Stirnseite eines in axialer Richtung nach unten aus dem Schaltkammergehäuse 20 herausgeführten Kontaktstössel 32 angeordnet, welcher mittels eines nur schematisch angedeuteten Antriebs 34 in Richtung der Achse 18 von einer in der Figur 1 gezeigten Einschaltstellung in eine Ausschaltstellung und wieder zurück bringbar ist. Der Kontaktstössel 32 ist mittels einer Rollenkontaktanordnung 36 mit dem Anschlussteil 16 elektrisch verbunden (Fig. 3).The lower, movable switching contact 24 is arranged on the end face of a contact plunger 32 which extends downward in the axial direction out of the switching chamber housing 20 and which, by means of a drive 34 which is only indicated schematically, in the direction of the axis 18 from an on position shown in FIG. 1 to an off position and can be brought back. The contact plunger 32 is electrically connected to the connecting part 16 by means of a roller contact arrangement 36 (FIG. 3).

Das zylinderförmige und koaxial zur Vakuumschaltkammer 12 angeordnete Gehäuse 10 weist für das Anschlusselement 14 in radialer Richtung einen Durchlass 38 auf, der an den Querschnitt des Anschlusselementes 14 angepasst ist. Das Anschlusselement 14 ist ein im Querschnitt quadratisches Profilstück mit abgerundeten Ecken, dessen Längsachse mit 40 bezeichnet ist. Das Anschlusselement 14 ist in seinem im Gehäuse 10 angeordneten Abschnitt 42 in Richtung der Längsachse 18 der Vakuumschaltkammer 12 verjüngt ausgebildet und liegt mit seiner diesseitigen Stirnfläche 44 an der inneren Mantelfläche 46 des Gehäuses 10 an. Die bei der Montage unten zu liegen kommende Fläche des Abschnitts 42 bildet die Kontaktfläche 28, an welcher der Kontaktstift 26 anliegt.The cylindrical housing 10, which is arranged coaxially to the vacuum interrupter chamber 12, has a passage 38 for the connecting element 14 in the radial direction, which is adapted to the cross section of the connecting element 14. The connecting element 14 is a profile piece with a square cross section with rounded corners, the longitudinal axis of which is designated by 40. The connecting element 14 is tapered in its section 42 arranged in the housing 10 in the direction of the longitudinal axis 18 of the vacuum switching chamber 12 and rests with its end face 44 on this side against the inner lateral surface 46 of the housing 10. The surface of section 42 that comes to lie at the bottom during assembly forms the contact surface 28 against which the contact pin 26 rests.

Zum Durchlass 38 diametral gegenüberliegend ist im Gehäuse 10 ein weiterer Durchlass 48 vorgesehen, welcher von einem stirnseitig am Anschlusselement 14 vorgesehenen Zapfen 50 durchdrungen ist. Der Zapfen 50 weist ein nicht dargestelltes Gewinde auf, in welches eine Mutter 52 eingeschraubt ist, um das Anschlusselement 14 am Gehäuse 18 zu befestigen. Die Mutter 52 ist von einer taschenförmigen in axialer Richtung nach oben offenen, am Gehäuse 10 angeformten Abdekkung 54 überdeckt.A further passage 48 is provided in the housing 10 diametrically opposite the passage 38 and is penetrated by a pin 50 provided on the end face on the connecting element 14. The pin 50 has a thread, not shown, into which a nut 52 is screwed in order to fasten the connecting element 14 to the housing 18. The nut 52 is covered by a pocket-shaped cover 54 which is open in the axial direction and is formed on the housing 10.

Das Anschlusselement 14 ist auf einem Teil seiner über das Gehäuse 10 vorstehenden Länge von einem am Gehäuse 10 angeformten rohrförmigen Abdeckelement 56 überdeckt. Das Anschlusselement 14 stützt sich somit einerseits am Abdeckelement 56 und am Durchlass 38 und andererseits mittels des Zapfens 50 am Durchlass 48 ab und wird in Richtung seiner Längsachse 40 mittels der Schraubenverbindung 50, 52 am Gehäuse 10 gehalten. Der Vakuumschalter ist als Trennschalter ausgebildet und weist am freien Ende des Anschlusselementes 14 einen Trennkontakt 58 mit federbelasteten Kontaktfingern 60 auf.The connecting element 14 is covered over part of its length projecting beyond the housing 10 by a tubular cover element 56 molded onto the housing 10. The connection element 14 is thus supported on the one hand on the cover element 56 and on the passage 38 and on the other hand on the passage 48 by means of the pin 50 and is held on the housing 10 in the direction of its longitudinal axis 40 by means of the screw connection 50, 52. The vacuum switch is designed as a disconnect switch and has a disconnect contact 58 with spring-loaded contact fingers 60 at the free end of the connecting element 14.

Das Gehäuse 10 weist unterhalb der Vakuumschaltkammer 12 einen Zwischenboden 62 mit einer Oeffnung 64 für den Kontaktstössel 32 auf. Der einstückig ausgebildete Anschlussteil 16 ist mit seinem im Gehäuse 10 angeordneten Abschnitt 66 von unten mittels zweier in axialer Richtung verlaufender Schrauben 68 und Muttern 70 an diesem Zwischenboden 62 befestigt. Das Anschlussteil 16 ist durch einen direkt unterhalb des Zwischenbodens 62 in radialer Richtung verlaufenden Durchlass 72 aus dem Gehäuse 10 herausgeführt und weist in seinem über das Gehäuse 10 vorstehenden Teil einen im wesentlichen quadratischen Querschnitt mit abgerundeten Ecken auf. Der im Gehäuse angeordnete Abschnitt 66 des Anschlussteils 16 ist schaufelförmig verbreitert, wie dies insbesondere aus der Figur 3 ersichtlich ist. Im Abschnitt 66 ist ein in Richtung der Längsachse 18 verlaufender Durchlass 74 vorgesehen, in welchem die Rollenkontaktanordnung 36 angeordnet ist und durch welchen der Kontaktstössel 32 hindurchgeführt ist. Dieser Durchlass 74 ist bezüglich einer Ebene, in welcher die Längsachse 18 des Gehäuses 10 und die mit 75 bezeichnete Längsachse des Anschlussteils 16 liegt, symmetrisch ausgebildet, weist einen im wesentlichen quadratischen Querschnitt und gegen innen vorstehende, zur genannten Ebene symmetrische, in Richtung der Längsachse 18 verlaufende Nasen 76 auf. An diesen Nasen 76 ist an ihren gegeneinander gerichteten Endbereichen eine Krümmung vorgesehen, die ungefähr der Krümmung des Kontaktstössels 32 entspricht.The housing 10 has an intermediate base 62 below the vacuum interrupter chamber 12 with an opening 64 for the contact plunger 32. The integrally formed connecting part 16 is fastened to this intermediate floor 62 with its section 66 arranged in the housing 10 from below by means of two screws 68 and nuts 70 running in the axial direction. The connecting part 16 is led out of the housing 10 through a passage 72 which extends in the radial direction directly below the intermediate base 62 and has a substantially square cross section with rounded corners in its part projecting beyond the housing 10. The section 66 of the connecting part 16 arranged in the housing is widened in the shape of a blade, as can be seen in particular from FIG. 3. In the section 66, a passage 74 running in the direction of the longitudinal axis 18 is provided, in which the roller contact arrangement 36 is arranged and through which the contact plunger 32 is guided. This passage 74 is of symmetrical design with respect to a plane in which the longitudinal axis 18 of the housing 10 and the longitudinal axis of the connecting part 16, which is denoted by 75, has an essentially square cross section and is symmetrical towards the plane in the direction of the longitudinal axis and protrudes toward the inside 18 running noses 76. A curvature is provided on these lugs 76 at their mutually directed end regions, which corresponds approximately to the curvature of the contact plunger 32.

Die Rollenkontaktanordnung 36 weist einen Rollenkäfig 78 mit zwei zueinander parallelen Platten 80 auf, die mittels zweier in Richtung der Längsachse 75 des Anschlussteils 16 verlaufenden Wellen 82 miteinander verbunden sind. Diese Wellen 82 verlaufen beidseitig des Kontaktstössels 32 und auf ihnen sitzt je ein Paar gegeneinander gerichteter, kegelförmiger Kontaktrollen 84. Diese Kontaktrollen 84 werden mittels Druckfedern 86, von welchen nur eine in der Figur 3 dargestellt ist, an die entsprechende Nase 76 und den Kontaktstössel 32 angedrückt. Bei der Bewegung des Schaltstössels 32 wälzen sich die Kontaktrollen 84 an den Nasen 76 und am Kontaktstössel 32 ab, wodurch der Rollenkäfig 78 jeweils um den halben Hub des Kontaktstössels 32 mitläuft.The roller contact arrangement 36 has a roller cage 78 with two mutually parallel plates 80 which are connected to one another by means of two shafts 82 running in the direction of the longitudinal axis 75 of the connecting part 16. These shafts 82 run on both sides of the contact plunger 32 and a pair of conical contact rollers 84 directed against each other sits on them. These contact rollers 84 are connected to the corresponding lug 76 and the contact plunger 32 by means of compression springs 86, only one of which is shown in FIG. 3 pressed. When the switching plunger 32 moves, the contact rollers 84 roll on the lugs 76 and on the contact plunger 32, as a result of which the roller cage 78 rotates half the stroke of the contact plunger 32.

Das Anschlussteil 16 ist auf einem Teil seiner über das Gehäuse 10 vorstehenden Länge von einem am Gehäuse 10 angeformten, rohrförmigen Abdeckelement 88 überdeckt, dessen lichte Weite derart bemessen ist, dass der innere Abschnitt 66 von aussen durch dieses Abdeckelement 88 hindurch in das Gehäuse 10 eingeführt werden kann. Das Anschlussteil 16 weist an seinem freien Ende ebenfalls einen Trennkontakt 58 mit Kontaktfingern 60 auf.The connecting part 16 is covered over part of its length protruding beyond the housing 10 by a tubular cover element 88 molded onto the housing 10, the clear width of which is dimensioned such that the inner section 66 is introduced into the housing 10 from the outside through this cover element 88 can be. The connecting part 16 also has a disconnecting contact 58 with contact fingers 60 at its free end.

Am unteren Ende des Gehäuses 10 ist ein nicht dargestellter Fahrwagen vorgesehen, mittels welchen der Vakuumschalter in Längsrichtung des Anschlusselementes 14 und des Anschlussteils 16 verschiebar ist, um die Trennkontakte 58 mit nicht dargestellten Gegenkontakten in und ausser Verbindung zu bringen. Es ist selbstverständlich, dass auf einem Fahrwagen, je nach Anzahl Phasen, mehrere Gehäuse 10 mit Schaltkammern 12 angeordnet sein können.At the lower end of the housing 10, a carriage, not shown, is provided, by means of which the vacuum switch can be displaced in the longitudinal direction of the connecting element 14 and the connecting part 16 in order to bring the isolating contacts 58 into and out of connection with counter contacts, not shown. It goes without saying that, depending on the number of phases, a plurality of housings 10 with switching chambers 12 can be arranged on a carriage.

Bei der Montage des Vakuumschalters wird zuerst das Anschlussteil 16 mit seinem Abschnitt 66 voraus durch das Abdeckelement 88 und den Durchlass 72 hindurch von aussen in das Gehäuse 10 hineingeführt und mittels den Schrauben 68 und Muttern 70 am Zwischenboden 62 befestigt. Anschliessend wird die Vakuumschaltkammer 12 zusammen mit der auf dem Kontaktstössel 32 sitzenden Rollenkontaktanordnung 36 von oben in das Gehäuse 10 abgesenkt und dabei die Rollenkontaktanordnung 36 in den Durchlass 74 im Abschnitt 66 des Anschlussteils 16 eingeführt. Dann wird das Anschlusselement 14 mit seinem Zapfen 50 voraus durch das Abdeckelement 56 und den Durchlass 38 hindurchgestossen, bis die Stirnfläche 44 an der inneren Mantelfläche 46 des Gehäuses 10 anliegt und der Zapfen 50 den Durchlass 48 durchstösst. Durch Aufsetzen und Anziehen der Mutter 52 auf den Zapfen 50 wird das Anschlusselement 14 fixiert.When assembling the vacuum switch, the connecting part 16 is first led with its section 66 ahead through the cover element 88 and the passage 72 from the outside into the housing 10 and fastened to the intermediate floor 62 by means of the screws 68 and nuts 70. The vacuum switching chamber 12 is then lowered from above into the housing 10 together with the roller contact arrangement 36 seated on the contact plunger 32, and the roller contact arrangement 36 is thereby introduced into the passage 74 in the section 66 of the connecting part 16. The connecting element 14 is then pushed with its pin 50 ahead through the cover element 56 and the passage 38 until the end face 44 abuts the inner circumferential surface 46 of the housing 10 and the pin 50 pierces the passage 48. The connecting element 14 is fixed by placing and tightening the nut 52 on the pin 50.

Das Aufsetzen und Festziehen der Mutter 52 kann problemlos durch die taschenförmige Oeffnung zwischen dem Gehäuse 10 und der Abdekkung 54 hindurch erfolgen. Als letzter Schritt wird nun die Vakuumschaltkammer 12 mit der Schraube 30 am Anschlusselement 14 befestigt.The nut 52 can be put on and tightened without problems through the pocket-shaped opening between the housing 10 and the cover 54. As a last step, the vacuum interrupter 12 is now fastened to the connection element 14 with the screw 30.

Das Anschlusselement 14 und das Anschlussteil 16 müssen nicht zwingend mittels Schrauben und Muttern am Gehäuse 10 bzw. am Zwischenboden 62 fixiert werden, es ist auch denkbar, dass Schnappverbindungen oder Klemmverbindungen vorgesehen sind. Die Querschnitte des Anschlusselementes 14 und des Anschlussteils 16 können jede geeignete Form aufweisen, so können sie beispielsweise rund ausgebildet sein. Der Zwischenboden kann auch durch flanschähnliche gegen das Innere des Gehäuses vorstehende Nasen gebildet sein. Anstelle von Trennkontakten 58 ist es auch denkbar, dass die Anschlussleitungen direkt am Anschlusselement 14 bzw. Anschlussteil 16, beispielsweise mittels Schrauben, befestigt sind.The connection element 14 and the connection part 16 do not necessarily have to be fixed to the housing 10 or to the intermediate floor 62 by means of screws and nuts, it is also conceivable that snap connections or clamp connections are provided. The cross sections of the connecting element 14 and the connecting part 16 can have any suitable shape, for example they can be round. The intermediate floor can also be formed by flange-like lugs protruding against the interior of the housing. Instead of isolating contacts 58, it is also conceivable for the connecting lines to be fastened directly to the connecting element 14 or connecting part 16, for example by means of screws.

In den Figuren 4 und 5 ist rein schematisch ein oberer Anschlussbereich 110 einer weiteren Ausbildungsform eines Vakuumschalters für Mittelspannung in einem Vertikalschnitt bzw. in Ansicht dargestellt. Dieser weist ein im wesentlichen rohrförmiges Gehäuse 112 aus isolierendem Kunststoff mit einem ungefähr quadratischen Querschnitt auf. Im Gehäuse 112 ist eine Vakuumschaltkammer 114 angeordnet, von welcher in der Fig. 4 nur der obere Endbereich gezeigt ist. Die Achse der Vakuumschaltkammer ist mit 114' angegeben und verläuft in gleicher Richtung wie die Längsachse des Gehäuses 112. Oberhalb der Vakuumschaltkammer 114 ist in einer Richtung rechtwinklig zur Achse 114' ein einstückiges Anschlusselement 116 aus dem Gehäuse 112 herausgeführt, um die Vakuumschaltkammer 114 mit in den Figuren nicht gezeigten, aber allgemein bekannten Anschlussleitern oder Sammelschienen elektrisch zu verbinden.In FIGS. 4 and 5, an upper connection area 110 of a further embodiment of a vacuum switch for medium voltage is shown purely schematically in a vertical section or in a view. This has an essentially tubular housing 112 made of insulating plastic with an approximately square cross section. A vacuum switching chamber 114 is arranged in the housing 112, of which only the upper end region is shown in FIG. 4. The axis of the vacuum interrupter chamber is indicated at 114 'and runs in the same direction as the longitudinal axis of the housing 112. Above the vacuum interrupter chamber 114, a one-piece connection element 116 is led out of the housing 112 in a direction perpendicular to the axis 114' in order to enclose the vacuum interrupter chamber 114 with in to electrically connect the figures, not shown, but generally known connecting conductors or busbars.

Die im wesentlichen zylinderförmige Vakuumschaltkammer 112 ist allgemein bekannter Bauart (vergl. dazu auch Fig. 1) und weist oben eine Anschlussfläche 118 auf, die in bekannter Art und Weise mit einem im Innern der Vakuumschaltkammer 114 vorgesehenen feststehenden Schaltkontakt elektrisch verbunden ist. Die Vakuumschaltkammer 114 liegt mit ihrer Anschlussfläche 118 an dem im Querschnitt im wesentlichen rechteckigen Anschlusselement 116 an und ist an diesem mittels zwei in Richtung der Achse 114' verlaufenden Schrauben 120 befestigt.The substantially cylindrical vacuum interrupter chamber 112 is of a generally known type (cf. also FIG. 1) and has a connection surface 118 at the top, which is of a known type and Is electrically connected to a fixed switching contact provided inside the vacuum interrupter 114. The vacuum switching chamber 114 bears with its connection surface 118 against the connection element 116, which is essentially rectangular in cross section, and is fastened to it by means of two screws 120 running in the direction of the axis 114 '.

Das rohrförmige die Vakuumschaltkammer 114 umgreifende Gehäuse 112 weist für das Anschlusselement 116 einen Durchlass 122 auf, dessen Querschnitt im wesentlichen rechteckig ist, wie dies insbesondere aus der Fig. 5 hervorgeht. Die Breite B des Durchlasses 122 entspricht im wesentlichen der Breite des Anschlusselementes 116, wogegen die Höhe H des Durchlasses 122 grösser ist als die entsprechende Abmessung des Anschlusselementes 116. Das Gehäuse 112 weist im Bereich des Durchlasses 122 eine Stützzunge 124 auf, die von unten in Richtung gegen das Anschlusselement 116 vorsteht und an welcher stirnseitig das Anschlusselement 116 anliegt.The tubular housing 112 encompassing the vacuum switching chamber 114 has a passage 122 for the connection element 116, the cross section of which is essentially rectangular, as can be seen in particular from FIG. 5. The width B of the passage 122 essentially corresponds to the width of the connection element 116, whereas the height H of the passage 122 is greater than the corresponding dimension of the connection element 116. The housing 112 has a support tongue 124 in the area of the passage 122, which extends from below into Direction protrudes against the connection element 116 and on which the connection element 116 abuts on the end face.

Oberhalb des Anschlusselementes 116 ist im freien Bereich des Durchlasses 122 zwischen dem Anschlusselement 116 und dem Gehäuse 112 ein keilförmiges Halteelement 126 vorgesehen. Dieses ist von Aussen in den Durchlass 122 eingeführt und steht mit seiner Keilfläche 126' an der entsprechend abgeschrägten Stirnwandung 128 des Gehäuses 112 an und verkeilt das Anschlusselement 116 im Durchlass 122. Das Halteelement 126 weist in seinem in das Innere des Gehäuses 112 vorstehenden Bereich ein sich in Längsrichtung des Anschlusselementes 116 erstreckendes Langloch 130 auf, durch welches eine in Richtung der Achse 114' verlaufende Befestigungsschraube 132 hindurchgeführt ist, welche zum Festklemmen des Halteelementes 126 am Anschlusselement 116 in dieses eingeschraubt ist. Der Kopf der Befestigungsschraube 132 stützt sich in einer Nut 133 im Halteelement 116 ab, deren Grundfläche rechtwinklig zur Achse 114' verläuft.A wedge-shaped holding element 126 is provided above the connecting element 116 in the free area of the passage 122 between the connecting element 116 and the housing 112. This is inserted into the passage 122 from the outside and, with its wedge surface 126 ′, abuts the correspondingly beveled end wall 128 of the housing 112 and wedges the connecting element 116 in the passage 122. The holding element 126 points in its area projecting into the interior of the housing 112 Elongated hole 130 extending in the longitudinal direction of the connection element 116, through which a fastening screw 132 extending in the direction of the axis 114 'is passed, which is screwed into the connection element 116 for clamping the holding element 126. The head of the fastening screw 132 is supported in a groove 133 in the holding element 116, the base surface of which runs at right angles to the axis 114 '.

Am Gehäuse 112 ist ein rohrförmiger Fortsatz 134 angeformt, der das Anschlusselement 116 in Richtung vom Gehäuse 112 weg über einen Teil seiner Länge mit Abstand umgreift.A tubular extension 134 is integrally formed on the housing 112, which extends around the connection element 116 in the direction away from the housing 112 over a part of its length at a distance.

Am Gehäuse 112 ist dem Durchlass 122 gegenüberliegend eine Stützstelle 136 für das Anschlusselement 116 vorgesehen (Fig. 6 und 7). Das Gehäuse 112 weist bei der Stützstelle 136 eine im wesentlichen quaderförmige Ausnehmung 138 auf, die von einem gegen aussen vorstehenden Wulst 140 umfasst ist. Die Breite B' der Ausnehmung 138 entspricht im wesentlichen der Breite des Anschlusselementes 116 und die Höhe H' der Ausnehmung 138 ist geringer als die Höhe des Anschlusselementes 116 über dessen Länge mit Ausnahme an dessen diesseitigen Endbereich 116'. Im Endbereich 116' ist das Anschlusselement 116 in seiner Höhe stufenartig verjüngt, sodass der Querschnitt des in die Ausnehmung 138 hineingreifenden Bereichs des Anschlusselementes 116 im wesentlichen dem Querschnitt der Ausnehmung 138 entspricht.A support point 136 for the connection element 116 is provided on the housing 112 opposite the passage 122 (FIGS. 6 and 7). At support point 136, housing 112 has a substantially cuboid recess 138, which is surrounded by a bulge 140 projecting towards the outside. The width B 'of the recess 138 corresponds essentially to the width of the connecting element 116 and the height H' of the recess 138 is less than the height of the connecting element 116 over its length, with the exception of its end region 116 'on this side. In the end region 116 ', the height of the connection element 116 is tapered in steps, so that the cross section of the area of the connection element 116 which extends into the recess 138 essentially corresponds to the cross section of the recess 138.

Die Ausnehmung 138 weist im Mittelbereich eine Vertiefung 142 auf, die sich wie in der Fig. 7 gezeigt, über die gesamte Höhe H' der Ausnehmung 138 erstreckt und in ihrer Breite ungefähr der Breite der Stützzunge 124 entspricht (Fig. 5). Mit seiner diesseitigen Stirnseite 116" steht das Anschlusselement 116 in der Ausnehmung 138 am Gehäuse 112 mit Ausnahme im Bereich der Vertiefung 142 an. Das Anschlusselement 116 ist somit in der Ausnehmung 138 in Richtung der Höhe sowie der Breite als auch in Richtung seiner Längserstreckung abgestützt.The recess 138 has a recess 142 in the central region which, as shown in FIG. 7, extends over the entire height H 'of the recess 138 and corresponds in its width approximately to the width of the support tongue 124 (FIG. 5). With its end face 116 "on this side, the connection element 116 is in the recess 138 on the housing 112, with the exception of the area of the recess 142. The connection element 116 is thus supported in the recess 138 in the direction of the height and the width as well as in the direction of its longitudinal extent.

Zum Befestigen des Anschlusselementes 116 am Gehäuse 112 wird jenes von aussen durch den Durchlass 122 hindurchgestossen und mit dem Endbereich 116' in die Ausnehmung 138 eingeführt bis es mit der Stirnseite 116" in der Ausnehmung 138 am Gehäuse 112 ansteht. Dann wird das keilförmige Halteelement 126 von aussen zwischen das Anschlusselement 116 und die Stirnwandung 128 am Gehäuse 112 hineingestossen, bis es dort festsitzt und das Anschlusselement 116 gegen die Stützzunge 124 presst. Mit der Befestigungsschraube 132 wird dann das Halteelement 126 fixiert. Schlussendlich wird die Vakuumschaltkammer 114 mit den Schrauben 120 am Anschlusselement 116 befestigt.To fasten the connection element 116 to the housing 112, the latter is pushed through from the outside through the passage 122 and inserted with the end region 116 ′ into the recess 138 until the end face 116 ″ in the recess 138 on the housing 112. Then the wedge-shaped holding element 126 pushed from the outside between the connecting element 116 and the end wall 128 on the housing 112 until it is stuck there and presses the connecting element 116 against the supporting tongue 124. The holding element 126 is then fixed with the fastening screw 132. Finally, the vacuum switching chamber 114 is fastened with the screws 120 Connection element 116 attached.

Die Figuren 8 bis 11 zeigen in entsprechender Darstellung wie die Figuren 4 bis 7 den oberen Anschlussbereich 10 desselben Gehäuses 112, wobei aber das Anschlusselement 144 sowohl in Richtung der Breite wie auch in der Höhe kleiner ausgebildet ist als das Anschlusselement 116. Da das in den Figuren 8 bis 11 gezeigte Gehäuse 112 dem in den Figuren 4 bis 7 gezeigten Gehäuse genau entspricht, wird dieses nur noch insoweit beschrieben, als dies für das Verständnis notwendig ist.FIGS. 8 to 11 show in a corresponding representation like FIGS. 4 to 7 the upper connection area 10 of the same housing 112, but the connection element 144 is smaller than the connection element 116 both in terms of width and height. Since this is shown in FIGS 8 to 11 shown housing 112 corresponds exactly to the housing shown in Figures 4 to 7, this is only described to the extent that this is necessary for understanding.

Die Höhe des Anschlusselementes 144 entspricht im wesentlichen der Höhe H' der Ausnehmung 138 und Vertiefung 142. Die Breite des Anschlusselementes 144 ist ungefähr gleich der Breite der Stützzunge 124 und der Vertiefung 142. Mit seinem der Ausnehmung 138 zugewandten Endbereich 144' greift das Anschlusselement 144 in die Vertiefung 142 der Ausnehmung 138 ein und steht mit seiner Stirnseite 144" am Gehäuse 112 an. Am diesseitgen Endbereich ist somit das Anschlusselement 144 in der Vertiefung 142 sowohl in Richtung der Breite wie auch in der Höhe und in Richtung der Längserstreckung des Anschlusselementes 144 abgestützt.The height of the connection element 144 corresponds essentially to the height H 'of the recess 138 and recess 142. The width of the connection element 144 is approximately equal to the width of the support tongue 124 and the recess 142. With its end region 144' facing the recess 138, the connection element 144 engages into the recess 142 of the recess 138 and its end face 144 ″ is in contact with the housing 112. At the end region on this side, the connecting element 144 is thus in the recess 142 both in the direction of the width and in the height and in the direction of the longitudinal extent of the connecting element 144 supported.

Im Bereich des Durchlasses 122 liegt das Anschlusselement 144 auf der Stützzunge 124 auf und wird mittels eines keilförmigen Haltegliedes 146 gegen diese gepresst und im Durchlass 122 verkeilt gehalten. Das Halteglied 146 ist bezüglich des Anschlusselementes 144 der Stützzunge 124 gegenüberliegend in den freien Bereich zwischen dem Anschlusselement 144 und dem Gehäuse 112 des Durchlasses 122 eingeführt. Mit seiner Keilfläche 146' liegt das Halteglied 146 an der entsprechend angeschrägten Stirnwandung 128 das Gehäuses 112 an. Am Halteglied 146 sind seitliche nach unten vorstehende Halteflanken 148 angeformt, die das Anschlusselement 144 und die Stützzunge 124 seitlich umgreifen. Da die Breite des Anschlusselementes 144 im wesentlichen der Breite der Stützzunge 124 entspricht, fixieren somit die Halteflanken 148 des Haltegliedes 146 das Anschlusselement 144 an der Stützzunge 124 in Richtung der Breite. Das Halteglied 146 ist in seiner Höhe im Vergleich zum Halteelement 126 (Fig. 4 und 5) grösser ausgebildet um den entsprechend der kleineren Höhe des Anschlusselementes 144 vergrösserten freien Bereich zwischen dem Halteglied 146 und der Stirnwandung 128 ausgleichen zu können. In dem in das Innere des Gehäuse 112 vorstehenden Bereich weist das Halteglied 146 das in Längserstreckung des Anschlusselementes 144 verlaufende Langloch 130 auf, welches von der in das Anschlusselement 144 eingeschraubten Befestigungsschraube 132 durchgriffen ist. Der Kopf der Befestigungsschraube 132 stützt sich in der Nut 133 am Halteglied 146 ab.In the area of the passage 122, the connection element 144 rests on the supporting tongue 124 and is pressed against it by means of a wedge-shaped holding member 146 and held in a wedged manner in the passage 122. The holding member 146 is inserted with respect to the connecting element 144 opposite the supporting tongue 124 into the free area between the connecting element 144 and the housing 112 of the passage 122. With its wedge surface 146 ', the holding member 146 bears against the correspondingly bevelled end wall 128 of the housing 112. On the holding member 146, lateral, downwardly projecting holding flanks 148 are formed, which laterally engage around the connecting element 144 and the supporting tongue 124. Since the width of the connecting element 144 essentially corresponds to the width of the supporting tongue 124, the holding flanks 148 of the holding member 146 thus fix the connecting element 144 to the supporting tongue 124 in the width direction. The height of the holding element 146 is larger than that of the holding element 126 (FIGS. 4 and 5) in order to be able to compensate for the free area between the holding element 146 and the end wall 128 which is enlarged in accordance with the smaller height of the connecting element 144. In the area projecting into the interior of the housing 112, the holding member 146 has the elongated hole 130 which extends in the longitudinal extent of the connection element 144 and through which the fastening screw 132 screwed into the connection element 144 extends. The head of the fastening screw 132 is supported in the groove 133 on the holding member 146.

Der notwendige Querschnitt des Anschlusselementes 116 bzw. 144 wird vom zu führenden Strom bestimmt. Das in den Figuren 4 bis 7 gezeigte Anschlusselement 116 kann somit grössere Ströme führen als das im Querschnitt kleinere Anschlusselement 144 gemäss den Figuren 8 bis 11. Entsprechend den zu führenden und zu unterbrechenden Nenn- und Kurzschlussströmen können auch die Vakuumschaltkammern 114 unterschiedlich ausgebildet sein. So weist die in der Figur 8 gezeigte Vakuumschaltkammer 114 eine geringere Höhe als die in der Figur 4 gezeigte Vakuumschaltkammer 114 auf. Um diese unterschliedlichen Abmessungen bei gleichem Gehäuse 112 auszugleichen, ist gemäss Fig. 8 zwischen der Anschlussfläche 118 der Vakuumschaltkammer 114 und dem Anschlusselement 144 eine Hülse 150 aus elektrisch leitendem Material angeordnet, welche von der die Vakummschaltkammer 114 an das Anschlusselement 144 befestigende Schraube 120 durchgriffen ist. Die Achse der Vakuumschaltkammer ist mit 114' bezeichnet.The necessary cross section of the connection element 116 or 144 is determined by the current to be carried. The connecting element 116 shown in FIGS. 4 to 7 can thus carry larger currents than the connecting element 144 with a smaller cross section according to FIGS. 8 to 11. The vacuum interrupters 114 can also be designed differently according to the nominal and short-circuit currents to be conducted and interrupted. The vacuum interrupter chamber 114 shown in FIG. 8 has a lower height than the vacuum interrupter chamber 114 shown in FIG. 4. In order to compensate for these different dimensions with the same housing 112, a sleeve 150 made of electrically conductive material is arranged between the connection surface 118 of the vacuum switching chamber 114 and the connection element 144, which is penetrated by the screw 120 fixing the vacuum switching chamber 114 to the connection element 144 . The axis of the vacuum interrupter is designated 114 '.

Bei der Montage des einstückig ausgebildeten Anschlusselementes 144 wird dieses von aussen durch den Durchlass 122 hindurchgeführt und mit seinem Endbereich 144' in die Vertiefung 142 der Ausnehmung 138 hineingeführt, bis es mit seiner Stirnseite 144" am Gehäuse 112 ansteht. Anschliessend wird das Halteglied 146 auf das Anschlusselement 144 aufgesetzt und zwischen dieses und die Wandung 128 hineingespresst. Mit der Befestigungsschraube 132 wird dann das Halteglied 146 am Anschlusselement 144 fixiert. Das Anschlusselement 144 ist also im Bereich der Stützstelle 136 in der Vertiefung 142 und im Bereich des Durchlasses 122 durch die Stützzunge 124 und das Halteglied 146 in allen Richtungen ausgerichtet und sicher gehalten. Die Halteflanken 148 sorgen dabei für eine genaue Ausrichtung des Anschlusselementes 144 bezüglich der Stützzunge 124. Schlussendlich wird dann noch die Vakuumschaltkammer 114 mit der Schraube 120 unter Einlegen der Hülse 150 am Anschlusselement 144 in Richtung der Achse 114' befestigt.When the one-piece connection element 144 is assembled, it is passed from the outside through the passage 122 and its end region 144 ′ is introduced into the recess 142 of the recess 138 until its end face 144 ″ is in contact with the housing 112. The holding member 146 is then opened the connection element 144 is placed and pressed between it and the wall 128. The holding member 146 is then fixed to the connection element 144 with the fastening screw 132. The connection element 144 is thus in the region of the support point 136 in the recess 142 and in the region of the passage 122 through the support tongue 124 and the holding member 146 aligned and securely held in all directions, the holding flanks 148 ensure an exact alignment of the connecting element 144 with respect to the supporting tongue 124. Finally, the vacuum switching chamber 114 is then screwed into the connecting element 144 with the screw 120 on the connecting element 144 Direction g of the axis 114 'attached.

Der Vollständigkeit halber sei erwähnt, dass das Anschlusselement 116 bzw. 144 aus flachem Halbzeug gefertigt ist. Die Ecken bzw. Kanten des Anschlusselementes 116, 144 sind abgerundet, um hohe Feldstärken und Teilentladungen zu vermeiden. Am profilförmigen Anschlusselement 116, 144 sind nur geringfügige Bearbeitungen notwendig. So sind die Löcher für die Schrauben 120 und das Gewinde für die Befestigungsschraube 132 und gegebenenfalls eine Kontaktfläche, um einen niederohmigen Stromübergang zwischen der Vakuumschaltkammer 114 bzw. der Hülse 150 und dem Anschlusselement 116, 144 zu gewährleisten, am Anschlusselement 116, 144 anzubringen. Bei Anschlusselementen 116, deren Höhe grösser ist als die Höhe H' der Ausnehmung 138, ist der Endbereich 116' entsprechend zu bearbeiten, um den Eingriff in die Ausnehmung 138 zu gewährleisten. Das Gehäuse 112 wird vorteilhafterweise in einem Stück gegossen oder gespritzt. Das Gehäuse 112 kann selbstverständlich auch hohlzylinderförmig ausgebildet sein. Der Vollständigkeit halber sei erwähnt, dass bei der in den Figuren 4 bis 11 gezeigten Ausbildungsform des Gehäuses 112 mit einem ungefähr quadratischen Querschnitt sich der Durchlass 122 und die Stützstelle 136 vorzugsweise an zwei einander gegenüberliegenden flachen Seiten des Gehäuses 112 befinden.For the sake of completeness, it should be mentioned that the connection element 116 or 144 is made of flat semifinished product. The corners or edges of the connection element 116, 144 are rounded in order to avoid high field strengths and partial discharges. Only minor machining operations are necessary on the profile-shaped connecting element 116, 144. For example, the holes for the screws 120 and the thread for the fastening screw 132 and, if appropriate, a contact area in order to ensure a low-resistance current transfer between the vacuum switching chamber 114 or the sleeve 150 and the connecting element 116, 144, are to be provided on the connecting element 116, 144. In the case of connection elements 116, the height of which is greater than the height H 'of the recess 138, the end region 116' is to be machined accordingly in order to ensure the engagement in the recess 138. Housing 112 is advantageously molded or molded in one piece. The housing 112 can of course also be designed as a hollow cylinder. For the sake of completeness, it should be mentioned that in the embodiment of the housing 112 shown in FIGS. 4 to 11 with an approximately square cross-section, the passage 122 and the support point 136 are preferably located on two opposite, flat sides of the housing 112.

Claims (10)

  1. A vacuum switch for medium voltage with a vacuum switch chamber (12, 114) arranged in a substantially tubular housing (10, 112) of insulating material, the vacuum switch chamber being secured to a connector element (14, 116, 144) which penetrates the housing (10, 112) in a direction transverse to the longitudinal axis (18) thereof through a passage (38, 112) and which is in addition supported on the housing (10, 112) at a support point (48, 136) situated opposite the passage (38, 122), characterised in that the connector element (14, 116, 144) is designed as one piece and is guided through the passage (38, 122) from the exterior, in that the vacuum switch chamber (12, 114) is securely screwed to the connector element (14, 116, 144) in the axial direction of the vacuum switch chamber, in that the connector element (116, 144) and the passage (122) have a substantially rectangular cross-section, and in that the cross-section of the passage (122) is larger than the cross-section of the connector element (116, 144) and in the free region of the passage (122) between the housing (112) and the connector element (116, 144) a wedge-shaped holding element (126, 146) which can be fixed in position is provided for wedging the connector element (116, 144) in the passage (122).
  2. A vacuum switch according to claim 1, characterised in that the holding element (126, 146) may be fixed to the connector element (116, 144), preferably by means of a fastening screw (132).
  3. A vacuum switch according to claim 1 or 2, characterised in that the cross-section of the connector element (144), both in the direction of the width (B) and of the height (H) of the passage (122), is smaller than the cross-section of the said passage, and in that the holding element (146), viewed in the longitudinal direction of the connector element (144), has sides (148) laterally enclosing the connector element (144) and is fixed to the housing (112) in the direction transverse to the sides (148).
  4. A vacuum switch according to claim 3, characterised in that the housing (112), in the region of the passage (122) on the side opposite the holding element (146) with respect to the connector element (144), has a supporting tongue (124) projecting towards the connector element (144) and supporting the same, and the sides (148) of the holding element (146) project into the region of the supporting tongue (124) in order to fix the said connector element in position.
  5. A vacuum switch according to one of claims 1 to 4, characterised in that the support point (136) situated opposite the passage has a recess (138) in the housing (112) which is designed so as to be stepped in order to support connector elements (116, 144) which differ in cross-section.
  6. A vacuum switch according to claim 5, characterised in that the recess (138) has a substantially rectangular cross-section and in the central region has a stepped depression (142).
  7. A vacuum switch for medium voltage with a vacuum switch chamber (12, 114) arranged in a substantially tubular housing (10, 112) of insulating material, the vacuum switch chamber being secured to a connector element (14, 116, 144) which penetrates the housing (10, 112) in a direction transverse to the longitudinal axis (18) thereof through a passage (38, 112) and which is in addition supported on the housing (10, 112) at a support point (48, 136) situated opposite the passage (38, 122), characterised in that the connector element (14, 116, 144) is designed as one piece and is guided through the passage (38, 122) from the exterior, in that the vacuum switch chamber (12, 114) is securely screwed to the connector element (14, 116, 144) in the axial direction of the vacuum switch chamber, in that the connector element (14) is secured to the housing (10) at the support point (48), in that the housing (10) has at the support point a further passage (48) which extends in the radial direction and which is penetrated by a pin (50) provided on the connector element (14), an anchoring part (52) being seated on the said pin on the exterior side of the housing (10), and in that the anchoring part (52) is covered by a covering (54) of insulating material which is preferably open in the axial direction of the housing (10) and pocket-shaped and is moulded to the housing (10).
  8. A vacuum switch according to one of claims 1 to 7, characterised in that the connector element (14, 116, 144) is arranged above the vacuum switch chamber (12, 114), the said vacuum switch chamber being secured thereto by means of a screw connection (30, 120) penetrating the connector element (14, 116, 144) from above.
  9. A vacuum switch according to one of claims 1 to 8, characterised in that a disconnection contact (58) is provided at the free end of the connector element (14, 116, 144).
  10. A vacuum switch according to one of claims 1 to 9, characterised in that the housing (10, 112) has a tubular covering (56, 134) which projects outwardly in the radial direction and encloses the connector element (14, 116, 144) at least on a part of its length projecting beyond the housing (10, 112).
EP90101077A 1989-01-30 1990-01-19 Vacuum switch Expired - Lifetime EP0380980B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90101077T ATE98398T1 (en) 1989-01-30 1990-01-19 VACUUM SWITCH.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH294/89 1989-01-30
CH29489 1989-01-30
CH437789 1989-12-06
CH4377/89 1989-12-06

Publications (3)

Publication Number Publication Date
EP0380980A1 EP0380980A1 (en) 1990-08-08
EP0380980B1 EP0380980B1 (en) 1993-12-08
EP0380980B2 true EP0380980B2 (en) 1996-11-20

Family

ID=25684156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101077A Expired - Lifetime EP0380980B2 (en) 1989-01-30 1990-01-19 Vacuum switch

Country Status (6)

Country Link
US (1) US5091615A (en)
EP (1) EP0380980B2 (en)
JP (1) JPH02230624A (en)
DE (1) DE59003727D1 (en)
DK (1) DK0380980T4 (en)
ES (1) ES2046541T5 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992009997A1 (en) * 1990-11-21 1992-06-11 Elin Energieversorgung Gesellschaft M. B. H. Vacuum switch pole
WO1992011651A1 (en) * 1990-12-21 1992-07-09 Elin Energieversorgung Gesellschaft M.B.H. Vacuum switch pole
US6172317B1 (en) * 1999-11-03 2001-01-09 Vacuum Electric Switch Co. Foam encapsulated vacuum interrupter module removably mounted in a housing

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562457A (en) * 1967-11-14 1971-02-09 Allis Chalmers Mfg Co Combined vacuum circuit breaker and current transformer device
US3471669A (en) * 1968-01-16 1969-10-07 Chance Co Ab Encapsulated switch assembly for underground electric distribution service
US3746811A (en) * 1969-09-03 1973-07-17 Hitachi Ltd Vacuum circuit breaker
JPS4967167A (en) * 1972-11-01 1974-06-28
US4124790A (en) * 1975-03-06 1978-11-07 Mcgraw-Edison Company Protective switch device and operating mechanism therefor
US3956721A (en) * 1975-04-16 1976-05-11 Rte Corporation Fault interrupter
US4150270A (en) * 1976-02-23 1979-04-17 Mcgraw-Edison Company Encapsulated high voltage switching device
AU558250B2 (en) * 1981-02-12 1987-01-22 Westinghouse Electric Corporation High conductivity electrical junction
US4568804A (en) * 1983-09-06 1986-02-04 Joslyn Mfg. And Supply Co. High voltage vacuum type circuit interrupter
DE8403264U1 (en) * 1984-02-04 1984-05-10 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Encapsulated switch
DD226690A1 (en) * 1984-09-24 1985-08-28 Buchwitz Otto Starkstrom A pole

Also Published As

Publication number Publication date
DE59003727D1 (en) 1994-01-20
EP0380980A1 (en) 1990-08-08
EP0380980B1 (en) 1993-12-08
DK0380980T4 (en) 1996-12-09
JPH02230624A (en) 1990-09-13
ES2046541T3 (en) 1994-02-01
ES2046541T5 (en) 1997-02-01
US5091615A (en) 1991-02-25

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