EP0380980A1 - Vacuum switch - Google Patents

Vacuum switch Download PDF

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Publication number
EP0380980A1
EP0380980A1 EP90101077A EP90101077A EP0380980A1 EP 0380980 A1 EP0380980 A1 EP 0380980A1 EP 90101077 A EP90101077 A EP 90101077A EP 90101077 A EP90101077 A EP 90101077A EP 0380980 A1 EP0380980 A1 EP 0380980A1
Authority
EP
European Patent Office
Prior art keywords
housing
passage
vacuum switch
switch according
connection element
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
EP90101077A
Other languages
German (de)
French (fr)
Other versions
EP0380980B1 (en
EP0380980B2 (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
Sprecher Energie 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 Sprecher Energie AG filed Critical Sprecher Energie 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
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—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 claim 1.
  • a vacuum interrupter is arranged in a cylindrical housing made of insulating material. Above this vacuum interrupter chamber there is a connection element, the clamping part of which is arranged in the interior of the housing 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 installing 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 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 which does not make it necessary to enlarge the housing.
  • connection element is specified in claim 3. This allows the connection element to be attached to the housing in a very simple manner. Furthermore, this gives the possibility of attaching connection elements of different cross-section to the housing without changes, simply by inserting another holding element on the housing.
  • a further preferred embodiment of the vacuum switch according to the invention permits problem-free attachment of a connection element which both in height and in width is smaller than the cross section of the passage.
  • connection 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 (claim 9).
  • 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.
  • connection element can be clamped at the support point on the housing, glued or pinned to it or the like.
  • the housing has a further passage in the radial direction at the support point, which passage is penetrated by a pin on the connection element on which an anchoring part sits on the outside of the housing.
  • the pin can have a thread on which a nut is seated in order to fasten the connecting element to the housing.
  • the anchoring part is preferably in accordance with An saying 11 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 connection part 16 is led out of the housing 10 in order to electrically connect the vacuum switching chamber 12 to connecting 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 firmly connected to the latter.
  • the contact pin 26 bears against a contact surface 28 of the connection element 14 and is on this by means of a screw running in the axial direction be 30 attached.
  • 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 is led out in the axial direction downward from the switching chamber housing 20 and which, by means of a drive 34 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 again.
  • 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 connection element 14 in the radial direction, which is adapted to the cross section of the connection 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 not Darge set thread, 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 at the top in the axial direction and is integrally 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 connection 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 is shown in particular in FIG. 3 can be seen.
  • section 66 there is a passage 74 running in the direction of the longitudinal axis 18, in which the roller contact arrangement 36 is arranged and through which the contact plunger 32 is guided.
  • This passage 74 is formed symmetrically with respect to a plane in which the longitudinal axis 18 of the housing 10 and the longitudinal axis labeled 75 refer to the connecting part 16, has a substantially square cross section and is symmetrical towards the plane in the direction of the longitudinal axis 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 runs along half the stroke of the contact plunger 32.
  • the connecting part 16 is on part of its length projecting beyond the housing 10 from one on the housing 10 Shaped, tubular cover element 88 covers, the clear width is dimensioned such that the inner portion 66 can be inserted from the outside through this cover element 88 into the housing 10.
  • the connector 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 inserted 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.
  • 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.
  • connection element 116 is led out of the housing 112 in order to electrically connect the vacuum switching chamber 114 to connection conductors or busbars, which are not shown in the figures but are generally known.
  • the essentially 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 electrically connected in a known manner to a fixed switching contact provided inside the vacuum interrupter chamber 114.
  • the vacuum switching chamber 114 rests with its connecting surface 118 on the connecting 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 corresponds essentially 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.
  • connection element 116 is in the free area of the passage 122 between the connection element 116 and a wedge-shaped holding element 126 is provided in the housing 112. This is inserted from the outside into the passage 122 and is with its wedge surface 126 'on the correspondingly bevelled end wall 128 of the housing 112 and wedges the connecting element 116 in the passage 122.
  • the holding element 126 has in its area projecting into the interior of the housing 112 extending in the longitudinal direction of the connecting element 116 extending slot 130 through which a fixing screw 132 extending in the direction of the axis 114 'is passed, which is screwed into the connecting 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 of which is perpendicular to the axis 114 '.
  • a tubular extension 134 is integrally formed on the housing 112, which extends around the connecting element 116 in the direction away from the housing 112 over part of its length.
  • 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 connection element 116 is step-like in height tapers, so that the cross section of the area of the connecting element 116 which engages in 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 front side 116 ⁇ on this side, the connection element 116 is in the recess 138 on the housing 112, except in the region of the recess 142. The connecting element 116 is thus supported in the recess 138 in the direction of the height and the width and also in the direction of its longitudinal extent.
  • the connecting element 116 To fasten the connecting 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 ⁇ is in the recess 138 on the housing 112. Then the wedge-shaped holding element 126 is 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 interrupter 114 is fastened to the connection element 116 with the screws 120.
  • 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 with the connection element 144 is made smaller both in the direction of the width and in the height than the connection element 116. Since the housing 112 shown in FIGS. 8 to 11 corresponds exactly to the housing shown in FIGS. 4 to 7, this is only described to the extent that this is necessary for understanding.
  • the height of the connecting element 144 corresponds essentially to the height H 'of the recess 138 and recess 142.
  • the width of the connecting element 144 is approximately equal to the width of the supporting tongue 124 and the recess 142. With its end region 144' facing the recess 138, the connecting element 144 engages into the recess 142 of the recess 138 and is at its end 144 an on the housing 112. At this end area, the connection element 144 is thus supported 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 connection element 144.
  • 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 connection element 144 opposite the support tongue 124 into the free area between the connection element 144 and the housing 112 of the passage 122. With its wedge surface 146 ', the holding member 146 rests on the correspondingly beveled 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 retaining flanks 148 of the retaining member 146 thus fix the connecting element 144 to the support 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 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.
  • 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 therefore 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.
  • the vacuum interrupter chamber 114 shown in FIG. 8 has a lower height than the vacuum interrupter chamber 114 shown in FIG. In order to compensate for these different dimensions with the same housing 112, according to FIG.
  • 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 attaches the vacuum switching chamber 114 to the connection element 144 Screw 120 is penetrated.
  • the axis of the vacuum interrupter is designated 114 '.
  • the integrally formed connecting element 144 When assembling the integrally formed connecting element 144, this is passed from the outside through the passage 122 and inserted with its end region 144 'into the recess 142 of the recess 138 until it abuts the housing 112 with its end face 144 ⁇ .
  • the holding member 146 is then placed on the connection element 144 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 connecting element 144 is thus aligned in the area of the support point 136 in the recess 142 and in the area of the passage 122 through the support tongue 124 and the holding member 146 and held securely.
  • connection element 144 is then fastened with the screw 120 by inserting the sleeve 150 on the connection element 144 in the direction of the axis 114 '.
  • connection element 116 or 144 is made from a 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. So are the holes for the screws 120 and the thread for the fastening screw 132 and possibly a contact surface for a low-resistance current transfer between the vacuum switching chamber 114 or the sleeve 150 and the connection to ensure element 116, 144 to be attached to 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

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

Abstract

The housing (112) of the vacuum switch has, in the upper connecting region (110), a passage (122) through which the connecting element (144) is guided. The latter engages with its end region (144') into a recess (138), located opposite the passage (122), in the housing (112). The connecting element (144) is supported in the region of the passage (122) on the supporting tongue (124) and is firmly clamped by means of the wedge-shaped retaining member (146). The vacuum switching chamber (114) is screwed onto the connecting element (144). The connecting element can also be mounted on the housing (112) close to the supporting point (136) located opposite the passage (122). …<IMAGE>…

Description

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

Ein solcher Vakuumschalter ist aus der DE-OS 35 44 912 be­kannt. In einem zylinderförmigen Gehäuse aus Isolierstoff ist eine Vakuumschaltkammer angeordnet. Oberhalb dieser Vakuumschaltkammer ist ein Anschlusselement vorgesehen, dessen im Gehäuseinnern 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 44 912. A vacuum interrupter is arranged in a cylindrical housing made of insulating material. Above this vacuum interrupter chamber there is a connection element, the clamping part of which is arranged in the interior of the housing 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 installing 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 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 die Merkmale des kennzeichnenden Teiles des Anspruchs 1 gelöst.This object is achieved by the features of the characterizing part of claim 1.

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 which does not make it necessary to enlarge the housing.

Eine besonders bevorzugte Ausbildungsform des erfindungs­gemässen Vakuumschalters ist im Anspruch 3 angegeben. Die­se 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.A particularly preferred embodiment of the vacuum switch according to the invention is specified in claim 3. This allows the connection element to be attached to the housing in a very simple manner. Furthermore, this gives the possibility of attaching connection elements of different cross-section to the housing without changes, simply by inserting another holding element on the housing.

Eine weitere bevorzugte Ausbildungsform des erfindungsge­mässen Vakuumschalters gemäss Anspruch 5 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 permits problem-free attachment of a connection element which both in height and in width is smaller than the cross section of the passage.

Bei einer Ausbildungsform gemäss Anspruch 7 werden An­schlusselemente unterschiedlichen Querschnittes in einer einzigen Ausnehmung im Gehäuse sicher gehalten.In an embodiment according to claim 7, connection elements of different cross-section are securely held in a single recess in the housing.

In einer weiteren besonders bevorzugten Ausildungsform ist das einstückig ausgebildete Anschlusselement an einer dem Durchlass gegenüberliegenden Stützstelle am Gehäuse be­festigt (Anspruch 9). 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 a further particularly preferred embodiment, the one-piece connection element is fastened to the housing at a support point opposite the passage (claim 9). 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 connecting element and simple design of both the connecting element and the housing.

Das Anschlusselement kann bei der Stützstelle am Gehäuse festgeklemmt, mit diesem verklebt oder verstiftet sein oder dgl. In einer bevorzugten Ausführungsform gemäss An­spruch 10 weist das Gehäuse aber 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.The connection element can be clamped at the support point on the housing, glued or pinned to it or the like. In a preferred embodiment according to claim 10, however, the housing has a further passage in the radial direction at the support point, which passage is penetrated by a pin on the connection element on which an anchoring part sits on the outside of the housing. Thus, the pin can 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 a very simple assembly.

In bevorzugter Weise ist der Verankerungsteil gemäss An­ spruch 11 von einer Abdeckung aus Isolierstoff überdeckt. Dadurch wird die dielektrische Festigkeit erhöht.The anchoring part is preferably in accordance with An saying 11 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 An­ schlussbereich 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:
  • 1 is a vertical section through a vacuum switch according to a first embodiment,
  • 2 and 3 in plan view and bottom view of the vacuum switch, the housing being shown cut along the line II-II and III-III of Figure 1,
  • 4 shows a vertical section through a vacuum switch according to a second embodiment in the area of a connection element,
  • 5 is 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 the lines VI-VI and VII-VII according to Figure 4,
  • Fig. 8 in the same representation as Fig. 4 to closing area of the vacuum switch with a smaller connecting element in cross section,
  • 9 is a view of the connection area in the direction of arrow IX of FIG. 8, and
  • 10 and 11 sections along lines XX and XI-XI according to Figure 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 connection part 16 is led out of the housing 10 in order to electrically connect the vacuum switching chamber 12 to connecting 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 Schrau­ be 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 firmly 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 on this by means of a screw running in the axial direction be 30 attached. 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 is led out in the axial direction downward from the switching chamber housing 20 and which, by means of a drive 34 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 again. 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 connection element 14 in the radial direction, which is adapted to the cross section of the connection 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 darge­ stelltes 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 Abdeckung 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 not Darge set thread, 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 at the top in the axial direction and is integrally 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 connection 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 is shown in particular in FIG. 3 can be seen. In section 66 there is a passage 74 running in the direction of the longitudinal axis 18, in which the roller contact arrangement 36 is arranged and through which the contact plunger 32 is guided. This passage 74 is formed symmetrically with respect to a plane in which the longitudinal axis 18 of the housing 10 and the longitudinal axis labeled 75 refer to the connecting part 16, has a substantially square cross section and is symmetrical towards the plane in the direction of the longitudinal axis 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 runs along 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 an­ geformten, 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 on part of its length projecting beyond the housing 10 from one on the housing 10 Shaped, tubular cover element 88 covers, the clear width is dimensioned such that the inner portion 66 can be inserted from the outside through this cover element 88 into the housing 10. The connector 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 inserted 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 Abdeckung 54 hindurch erfolgen. Als letzter Schritt wird nun die Vakuumschaltkammer 12 mit der Schrau­be 30 am Anschlusselement 14 befestigt.The fitting and tightening of the nut 52 can easily take place 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 is in a direction perpendicular to the axis 114' one-piece connection element 116 is led out of the housing 112 in order to electrically connect the vacuum switching chamber 114 to connection conductors or busbars, which are not shown in the figures but are generally known.

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 essentially 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 electrically connected in a known manner to a fixed switching contact provided inside the vacuum interrupter chamber 114. The vacuum switching chamber 114 rests with its connecting surface 118 on the connecting 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 corresponds essentially 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.Above the connection element 116 is in the free area of the passage 122 between the connection element 116 and a wedge-shaped holding element 126 is provided in the housing 112. This is inserted from the outside into the passage 122 and is with its wedge surface 126 'on the correspondingly bevelled end wall 128 of the housing 112 and wedges the connecting element 116 in the passage 122. The holding element 126 has in its area projecting into the interior of the housing 112 extending in the longitudinal direction of the connecting element 116 extending slot 130 through which a fixing screw 132 extending in the direction of the axis 114 'is passed, which is screwed into the connecting 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 of which is perpendicular 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 connecting element 116 in the direction away from the housing 112 over part of its length.

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 connection element 116 is step-like in height tapers, so that the cross section of the area of the connecting element 116 which engages in 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 front side 116˝ on this side, the connection element 116 is in the recess 138 on the housing 112, except in the region of the recess 142. The connecting element 116 is thus supported in the recess 138 in the direction of the height and the width and also 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 connecting 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˝ is in the recess 138 on the housing 112. Then the wedge-shaped holding element 126 is 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 interrupter 114 is fastened to the connection element 116 with the screws 120.

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 with the connection element 144 is made smaller both in the direction of the width and in the height than the connection element 116. Since the housing 112 shown in FIGS. 8 to 11 corresponds exactly to the housing shown in FIGS. 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 connecting element 144 corresponds essentially to the height H 'of the recess 138 and recess 142. The width of the connecting element 144 is approximately equal to the width of the supporting tongue 124 and the recess 142. With its end region 144' facing the recess 138, the connecting element 144 engages into the recess 142 of the recess 138 and is at its end 144 an on the housing 112. At this end area, the connection element 144 is thus supported 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 connection element 144.

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 we­ sentlichen 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 connection element 144 opposite the support tongue 124 into the free area between the connection element 144 and the housing 112 of the passage 122. With its wedge surface 146 ', the holding member 146 rests on the correspondingly beveled 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 in the we substantially corresponds to the width of the support tongue 124, the retaining flanks 148 of the retaining member 146 thus fix the connecting element 144 to the support 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 therefore carry larger currents than the connecting element 144 with a smaller cross section according to FIGS. 8 to 11. According to the nominal and short-circuit currents to be conducted and interrupted, the vacuum interrupters 114 can also be designed differently. The vacuum interrupter chamber 114 shown in FIG. 8 has a lower height than the vacuum interrupter chamber 114 shown in FIG. In order to compensate for these different dimensions with the same housing 112, according to FIG. 8, 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 attaches the vacuum switching chamber 114 to the connection element 144 Screw 120 is penetrated. 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 assembling the integrally formed connecting element 144, this is passed from the outside through the passage 122 and inserted with its end region 144 'into the recess 142 of the recess 138 until it abuts the housing 112 with its end face 144˝. The holding member 146 is then placed on the connection element 144 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 connecting element 144 is thus aligned in the area of the support point 136 in the recess 142 and in the area of the passage 122 through the support tongue 124 and the holding member 146 and held securely. The retaining flanks 148 ensure an exact alignment of the connection element 144 with respect to the support tongue 124. Finally, the vacuum switching chamber 114 is then fastened with the screw 120 by inserting the sleeve 150 on the connection element 144 in the direction of the axis 114 '.

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 Anschluss­ element 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 from a 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. So are the holes for the screws 120 and the thread for the fastening screw 132 and possibly a contact surface for a low-resistance current transfer between the vacuum switching chamber 114 or the sleeve 150 and the connection to ensure element 116, 144 to be attached to the connecting element 116, 144. In 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 (15)

1. Vakuumschalter für Mittelspannung mit einer in einem im wesentlichen rohrförmigen Gehäuse (10, 112) aus Isolier­stoff angeordneten Vakuumschaltkammer (12, 114), welche an einem das Gehäuse (10, 112) in einer Richtung quer zur dessen Längsachse (18) durch einen Durchlass (38, 122) durchdringenden und zusätzlich an einer dem Durchlass (38, 122) gegenüberliegenden Stützstelle (48, 136) am Gehäuse (10, 112) abgestützten Anschlusselement (14, 116, 144) be­festigt ist, dadurch gekennzeichnet, dass das Anschluss­element (14, 116, 144) einstückig ausgebildet und von aus­sen durch den Durchlass (38, 122) durchgeführt ist, und dass die Vakuumschaltkammer (12, 114) in axialer Richtung am Anschlusselement (14, 116, 144) festgeschraubt ist.1. Vacuum switch for medium voltage with a vacuum switching chamber (12, 114) arranged in an essentially tubular housing (10, 112) made of insulating material, which on one of the housing (10, 112) in a direction transverse to its longitudinal axis (18) through a Passage (38, 122) penetrating and additionally attached to a support point (48, 136) opposite the passage (38, 122) on the housing (10, 112) supported connection element (14, 116, 144), characterized in that the connection element (14, 116, 144) is formed in one piece and is passed from the outside through the passage (38, 122), and that the vacuum interrupter (12, 114) is screwed tightly to the connecting element (14, 116, 144) in the axial direction. 2. Vakuumschalter nach Anspruch 1, dadurch gekennzeichnet, dass das Anschlusselement (116, 144) und der Durchlass (122) einen im wesentlichen rechteckigen Querschnitt auf­weisen.2. Vacuum switch according to claim 1, characterized in that the connection element (116, 144) and the passage (122) have a substantially rectangular cross section. 3. Vakuumschalter nach Anspruch 2, dadurch gekennzeichnet, dass der Querschnitt des Durchlasses (122) grösser ist als der Querschnitt des Anschlusselementes (116, 144) und im freien Bereich des Durchlasses (122) zwischen dem Gehäuse (112) und dem Anschlusselement (116, 144) ein keilförmi­ges, fixierbares Halteelement (126, 146) zum Verkeilen des Anschlusselementes (116, 144) im Durchlass (122), vorgese­hen ist.3. Vacuum switch according to claim 2, characterized in that the cross section of the passage (122) is larger than the cross section of the connection element (116, 144) and in the free area of the passage (122) between the housing (112) and the connection element (116 , 144) a wedge-shaped, fixable holding element (126, 146) for wedging the connection element (116, 144) in the passage (122) is provided. 4. Vakummschalter nach Anspruch 3, dadurch gekennzeichnet, dass das Halteelement (126, 146), vorzugsweise mittels einer Befestigungsschraube (132) am Anschlusselement (116, 144) fixierbar ist.4. Vacuum switch according to claim 3, characterized in that the holding element (126, 146), preferably by means of a fastening screw (132) on the connecting element (116, 144) can be fixed. 5. Vakuumschalter nach Anspruch 3 oder 4, dadurch gekenn­zeichnet, dass der Querschnitt des Anschlusselementes (144) sowohl in Richtung der Breite (B) wie auch der Höhe (H) des Durchlasses (122) kleiner ist als dessen Quer­schnitt, und dass das Halteelement (146), in Längsrichtung des Anschlusselementes (144) gesehen, das Anschlusselement (144) seitlich umfassende Flanken (148) aufweist und in Richtung quer zu den Flanken (148) am Gehäuse (112) fixiert ist.5. Vacuum switch according to claim 3 or 4, characterized in that the cross section of the connection element (144) in both the width (B) and the height (H) of the passage (122) is smaller than its cross section, and that the holding element (146), seen in the longitudinal direction of the connecting element (144), the connecting element (144) has flanks (148) which extend laterally and is fixed in the direction transverse to the flanks (148) on the housing (112). 6. Vakuumschalter nach Anspruch 5, dadurch gekennzeichnet, dass das Gehäuse (112) im Bereich des Durchlasses (122) auf der bezüglich des Anschlusselementes (144) dem Halte­element (146) gegenüberliegenden Seite eine in Richtung gegen das Anschlusselement (144) vorstehende, dieses ab­stützende Stützzunge (124) aufweist und die Flanken (148) des Halteelementes (146) zu dessen Fixierung in den Be­reich der Stützzunge (124) vorstehen.6. Vacuum switch according to claim 5, characterized in that the housing (112) in the region of the passage (122) on the side opposite the holding element (146) with respect to the connection element (144) projects in the direction towards the connection element (144) has supporting supporting tongue (124) and the flanks (148) of the holding element (146) protrude into the region of the supporting tongue (124) for fixing it. 7. Vakuumschalter nach einem der Ansprüche 1 bis 6, da­durch gekennzeichnet, dass die dem Durchlass gegenüberlie­gende Stützstelle (136) eine Ausnehmung (138) im Gehäuse (112) aufweist, die zur Abstützung im Querschnitt unter­schiedlicher Anschlusselemente (116, 144) abgestuft ausge­bildet ist.7. Vacuum switch according to one of claims 1 to 6, characterized in that the support point (136) opposite the passage has a recess (138) in the housing (112) which is designed to support different connecting elements (116, 144) in cross section . 8. Vakuumschalter nach Anspruch 7, dadurch gekennzeichnet, dass die Ausnehmung (138) einen im wesentlichen rechtecki­gen Querschnitt und im Mittelbereich eine stufenförmige Vertiefung (142) aufweist.8. Vacuum switch according to claim 7, characterized in that the recess (138) has a substantially rectangular cross section and a step-shaped depression (142) in the central region. 9. Vakuumschalter nach Anspruch 1, dadurch gekennzechnet, dass das Anschlusselement (14) bei der Stützstelle (48) am Gehäuse (10) befestigt ist.9. Vacuum switch according to claim 1, characterized in that the connection element (14) is fastened to the housing (10) at the support point (48). 10. Vakuumschalter nach Anspruch 9, dadurch gekennzeich­net, dass das Gehäuse (10) an der Stützstelle einen weite­ren in radialer Richtung verlaufenden Durchlass (48) auf­weist, der von einem am Anschlusselement (14) vorgesehenen Zapfen (50) durchsetzt ist, auf welchem auf der Aussensei­te des Gehäuses (10) ein Verankerungsteil (52) sitzt, um das Anschlusselement (14) am Gehäuse (10) zu befestigen.10. Vacuum switch according to claim 9, characterized in that the housing (10) at the support point has a further radial passage (48) which is penetrated by a pin (50) provided on the connecting element (14), on which an anchoring part (52) sits on the outside of the housing (10) in order to fasten the connecting element (14) to the housing (10). 11. Vakuumschalter nach Anspruch 10, dadurch gekennzeich­net, dass das Verankerungsteil (52) durch eine, vorzugs­weise in axialer Richtung des Gehäuses (10) offene und taschenförmige Abdeckung (54) aus Isolierstoff abgedeckt ist.11. Vacuum switch according to claim 10, characterized in that the anchoring part (52) is covered by a, preferably in the axial direction of the housing (10) open and pocket-shaped cover (54) made of insulating material. 12. Vakuumschalter nach Anspruch 11, dadurch gekennzeich­net, dass die Abdeckung (54) am Gehäuse (10) angeformt ist.12. Vacuum switch according to claim 11, characterized in that the cover (54) is integrally formed on the housing (10). 13. Vakuumschalter nach einem der Ansprüche 1 bis 11, da­durch gekennzeichnet, dass das Anschlusselement (14, 116, 144) oberhalb der Vakuumschaltkammer (12, 114) angeordnet ist, wobei diese mittels einer das Anschlusselement (14, 116, 144) von oben durchsetzenden Schraubenverbindung (30, 120) daran befestigt ist.13. Vacuum switch according to one of claims 1 to 11, characterized in that the connecting element (14, 116, 144) is arranged above the vacuum interrupter (12, 114), said connecting element (14, 116, 144) from above by means of one penetrating screw connection (30, 120) is attached to it. 14. Vakuumschalter nach einem der Ansprüche 1 bis 13, da­durch gekennzeichnet, dass am freien Ende des Anschluss­elementes (14, 116, 144) ein Trennkontakt (58) vorgesehen ist.14. Vacuum switch according to one of claims 1 to 13, characterized in that an isolating contact (58) is provided at the free end of the connecting element (14, 116, 144). 15. Vakuumschalter nach einem der Ansprüche 1 bis 14, da­durch gekennzeichnet, dass das Gehäuse (10, 112) eine rohrförmige, in radialer Richtung nach aussen abstehende, das Anschlusselement (14, 116, 144) mindestens auf einem Teil seiner über das Gehäuse (10, 112) vorstehenden Länge umgebende Abdeckung (56, 134) aufweist.15. Vacuum switch according to one of claims 1 to 14, characterized in that the housing (10, 112) has a tubular, outwardly projecting in the radial direction, the connection element (14, 116, 144) at least on a part of it via the housing ( 10, 112) projecting length surrounding cover (56, 134).
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
CH29489 1989-01-30
CH294/89 1989-01-30
CH437789 1989-12-06
CH4377/89 1989-12-06

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

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

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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

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Publication number Priority date Publication date Assignee Title
US6172317B1 (en) * 1999-11-03 2001-01-09 Vacuum Electric Switch Co. Foam encapsulated vacuum interrupter module removably mounted in a housing

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US4568804A (en) * 1983-09-06 1986-02-04 Joslyn Mfg. And Supply Co. High voltage vacuum type circuit interrupter
DD226690A1 (en) * 1984-09-24 1985-08-28 Buchwitz Otto Starkstrom A pole

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US3471669A (en) * 1968-01-16 1969-10-07 Chance Co Ab Encapsulated switch assembly for underground electric distribution service
US4124790A (en) * 1975-03-06 1978-11-07 Mcgraw-Edison Company Protective switch device and operating mechanism therefor
EP0058519A2 (en) * 1981-02-12 1982-08-25 Westinghouse Electric Corporation Electrical junction of high conductivity for a circuit breaker or other electrical apparatus
DE8403264U1 (en) * 1984-02-04 1984-05-10 Calor-Emag Elektrizitäts-Aktiengesellschaft, 4030 Ratingen Encapsulated switch

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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

Also Published As

Publication number Publication date
US5091615A (en) 1991-02-25
EP0380980B1 (en) 1993-12-08
DK0380980T4 (en) 1996-12-09
ES2046541T5 (en) 1997-02-01
ES2046541T3 (en) 1994-02-01
EP0380980B2 (en) 1996-11-20
DE59003727D1 (en) 1994-01-20
JPH02230624A (en) 1990-09-13

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