EP3631820B1 - Assembly kit for a feedthrough - Google Patents
Assembly kit for a feedthrough Download PDFInfo
- Publication number
- EP3631820B1 EP3631820B1 EP18723016.4A EP18723016A EP3631820B1 EP 3631820 B1 EP3631820 B1 EP 3631820B1 EP 18723016 A EP18723016 A EP 18723016A EP 3631820 B1 EP3631820 B1 EP 3631820B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insulating element
- kit
- housing wall
- electrical conductor
- clamping
- 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.)
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- 239000004020 conductor Substances 0.000 claims description 77
- 238000007789 sealing Methods 0.000 claims description 21
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
- H01B17/265—Fastening of insulators to support
Definitions
- the invention relates to a kit for a bushing arrangement for the electrical connection of a transformer system through an opening in a housing wall of the transformer system.
- a implementation arrangement for transformers is, for example, from EP 1 614 127 B1 out.
- Known bushing arrangements usually have an electrical conductor which is guided from the outer area of the transformer to the inner area of the transformer by means of insulating elements arranged within the opening of a housing wall of the transformer system.
- the housing of the transformer system has earth potential, the conductor, on the other hand, can be subjected to a voltage of up to or more than 1kV and must therefore be adequately insulated from the housing wall by the arrangement of the insulating elements.
- kit of the type mentioned at the outset which, according to the invention, comprises an elongate electrical conductor and at least one first insulating element that can be inserted into the opening in the housing wall, with at least one first section as well as a second section lying on the outside in relation to the housing wall in the assembled state, and wherein the at least one first insulating element has an opening for at least partially accommodating the conductor, the opening of the insulating element for guiding the conductor from an outside of the housing wall towards an inside of the housing wall, wherein the first section of the electrical conductor has a widening which forms a stop surface for limiting a longitudinal displacement of the conductor through the opening in the first insulating element in the direction of the outside of the housing wall, the second section of the electrical conductor having a threaded section for receiving a Screw nut for clamping the conductor against an outside of the housing wall, wherein the at least one
- the kit according to the invention creates a bushing arrangement that can already be preassembled and, in the preassembled state, can be inserted from the outside into the opening in the housing wall of the transformer system and assembled from the outside.
- the at least one clamping element is brought into the second position, approaching the periphery of the at least one first insulating element, with the at least one clamping element being brought back into the first position as soon as it has passed the opening in the housing wall is, and thus secured against pulling out the bushing arrangement.
- the at least one clamping element can, for example, assume the first position independently by spring force or the effect of gravity, or can also be brought into the first position by other mechanisms such as tightening a screw nut arranged on the threaded section of the electrical conductor.
- tightening a screw nut arranged on the threaded section of the electrical conductor the conductor is braced against the outside of the housing wall (whereby further elements can typically be arranged between the screw nut and the housing wall, such as a cap, sealing rings, etc. mentioned below), by the conductor, due to its broadening in the first section, presses against the at least one insulating element and is restricted in its movement out of the interior of the transformer installation.
- the expression "circumference of the at least one first insulating element" is to be understood as meaning that it is formed without the at least one first clamping element - the shape of the clamping elements themselves is therefore not included in the scope of the insulating element.
- the bushing arrangement is fixed in its position by tightening the screw nut, which can also form part of the kit.
- the at least one clamping element prevents the bushing arrangement from slipping out. This makes it possible to quickly assemble the bushing arrangement from the outside, without requiring access for assembly tools to the interior of the transformer system.
- the voltage that is introduced into the transformer through the bushing arrangement and is discharged from it is, for example, 1 to 3 kV.
- the currents that can be supplied or discharged through the bushing arrangement are, for example, 1250 A.
- a bushing arrangement can be assigned to each phase.
- the openings in the housing wall of a transformer system are typically adapted for specific bushing arrangements and vice versa.
- the bushing arrangement can therefore be appropriately dimensioned for the respective application or housing opening.
- the at least one clamping element is arranged resiliently on the at least one first insulating element, the spring force being selected such that the clamping element is pressed by the spring force from the second position into the first position.
- the at least one clamping element can preferably be arranged in such a way that it can change into the second position through the action of a force component which acts in the direction of the opening of the at least one insulating element. If the bushing arrangement is inserted into an opening in a housing wall of a transformer system, the clamping element can switch to the second position upon contact with the wall delimiting the opening, thereby blocking the insertion of the Feedthrough arrangement can be prevented in the housing opening. If the at least one clamping element is resiliently pressed into the first position, the at least one clamping element can be brought into the second position against the spring force, which leaves the clamping element after passing through the housing opening back to the first position.
- the at least one first insulating element has a substantially cylindrical shape, with the at least one clamping element being accommodated completely within the peripheral surface (which in this embodiment corresponds to a lateral surface of a cylinder) of the at least one first insulating element, wherein the electrical conductor is rod-shaped and the opening of the at least one first insulating element is designed to receive a section of the electrical conductor that extends through the first insulating element in a form-fitting manner.
- the at least one clamping element can be accommodated completely within the shape of the at least one first insulating element, as a result of which the circumference of the at least one first insulating element can be dimensioned in a particularly form-fitting manner in relation to the housing opening.
- the bushing arrangement For a connection of the bushing arrangement to the transformer system that is particularly stable in terms of shape and position, it can be provided that at least two, three, four or more clamping elements are arranged on the at least one first insulating element, with the clamping elements preferably being arranged uniformly along the circumference of the first insulating element, preferably on the same height, are arranged.
- the clamping surfaces of the individual clamping elements thus form a common plane, as a result of which a particularly stable and uniform clamping effect is achieved, which also clearly defines the orientation of the bushing in relation to the housing wall.
- the at least one clamping element is designed in the form of a small plate, with the at least one first insulating element having a depression along its circumference for receiving the respective clamping element, with the at least one clamping element in the assembled state being at least partially in the direction of the at least one
- the insulating element has a protruding tongue that is supported on the insulating element in order to form a spring force that presses the clamping element into the first position, the at least one clamping element also extending from the circumference of the at least one clamping element Isolating member facing away from the tongue opposite outside has an adjusting projection through which a clamping surface is formed for clamping on an inside of the housing wall of the transformer system.
- the at least one clamping element In order to precisely determine the position of the at least one clamping element in relation to the at least one first insulating element, provision can be made for the at least one clamping element to have an adjusting projection protruding at least partially in the direction of the at least one first insulating element in the assembled state in order to determine the position of the at least one clamping element in Having reference to the at least one first insulating element, wherein the at least one first insulating element has a corresponding depression for receiving the adjusting projection.
- At least one adjusting projection extending in the longitudinal direction of the insulating element or an adjusting depression is formed on the at least one first insulating element to prevent the insulating element from twisting in relation to the opening in the housing wall is, preferably several adjustment projections or adjustment recesses are provided.
- the bushing arrangement can thus engage in corresponding adjustment openings or adjustment depressions in the housing opening of the transformer system.
- the leadthrough arrangement is secured against twisting in this way.
- the kit comprises a second insulating element which is set up to enclose that section of the at least one first insulating element which protrudes from the outside of the housing wall in the assembled state, with the second insulating element also having an opening for guiding the electrical conductor having.
- the kit comprises a first sealing ring which, in the assembled state, is arranged between the second insulating element and the outside of the housing wall of the transformer system, with the kit also having a second sealing ring, which in the assembled state is attached to the housing wall of the Transformer system remote top of the second insulating member is arranged and encloses the opening of the second insulating member and the electrical conductor accommodated therein, wherein the kit further comprises a cap, which also has an opening to Has passage of the electrical conductor and encloses the second sealing ring in the assembled state, wherein the threaded portion on the second portion of the electrical conductor extends in the assembled state to above the cap and the cap can be clamped against the second sealing ring by means of a nut.
- the second sealing ring presses against the second insulating element, which in turn presses against the first sealing ring on the housing wall of the transformer system.
- the kit is designed in such a way that, in the assembled state, the broadening of the first section of the electrical conductor presses against the first insulating element and thus against the inside of the housing wall of the transformer system by a screw on the threaded section the nut engaging the electrical conductor clamps the electrical conductor against the outside of the housing wall by means of the cap via a non-positive connection via the second sealing ring, the second insulating element and the first sealing ring.
- the forces acting on the electrical conductor are thus in equilibrium, with the forces acting on the seals being able to be determined by appropriate selection of the tightening torque of the screw nut.
- the opening of the at least one first insulating element has a widening that corresponds to the widening of the first section of the electrical conductor, with the widening and the widening is selected in such a way that the orientation of the electrical conductor in relation to the at least one first insulating element is fixed when the widening is accommodated in the widening.
- the second section of the electrical conductor which is on the outside in relation to the housing wall in the assembled state, has a receiving area for fastening an external external connection part, with a mechanical stop is provided for determining the orientation and preferably the position of the external connection part in relation to the electrical conductor.
- the widening of the first section of the electrical conductor is wedge-shaped and opens into an inner connection plate.
- the expression “inside” relates only to the assembled state and refers to the transformer system, with “inside” designating an arrangement inside the transformer system housing and “outside” an arrangement outside this housing.
- the invention also relates to a bushing arrangement composed of a kit according to the invention.
- the first section 3 'of the electrical conductor 3 has a widening 3a (see figure 2 ) which forms a stop surface 3a' for limiting a longitudinal displacement of the conductor 3 through the opening 2a of the first insulating element 4 in the direction of the outside 2" of the housing wall 2.
- the second section 3" of the electrical conductor 3 has a threaded section 3b (see figure 4 ) for receiving a screw nut 5 for clamping the conductor 3 against the outside 2" of the housing wall 2.
- the at least one first insulating element 4 has at least one clamping element 6 - in the present exemplary embodiment, four clamping elements 6 are provided, which are offset by 90° to one another along of the circumference of the first insulating element 4.
- the clamping elements 6 are designed to be of a from the periphery of the at least one first insulating element 4 protruding first position (P1) to a second position (P2, cf Figure 1b ) can be brought.
- the clamping elements 6 are arranged on the at least one first insulating element 4 in such a way that, in the first position (P1) when the bushing arrangement is installed, they limit a displacement of the at least one first insulating element 4 in the direction of the outside 2" of the housing wall 2, with the Clamping elements in the present embodiment each have a projection 6a for this purpose (see also Figures 5 and 6 ) have, through which a clamping surface 6a 'is formed for clamping on an inside of the housing wall 2 of the transformer system.
- Fig. 1b shows how the bushing arrangement is pushed through the opening 2a.
- the first insulating element 4 fits positively through the opening 2a, with the clamping elements 6 being inserted into the second position P2 inwards toward the first insulating element 4 in depressions 4c provided for receiving clamping elements 6 (see Fig 4 ) of the first insulating element 4 and thus release space for inserting the bushing arrangement into the opening 2a.
- the clamping elements 6 fold back into the clamping position (P1), as shown in FIG Figures 1c and 1d is clarified.
- the bushing arrangement or the kit 1 (in the context of the teaching of this application, the term kit does not refer exclusively to the disassembled state, but should also include the assembled state of the bushing arrangement ) also includes a second insulating element 7 in the illustrated embodiment, which also rests against the outside 2" of the housing wall 2 in the assembled state of the bushing arrangement and encloses the first insulating element 7 Figures 1a to 1d a cap 8 is shown, which is arranged between the screw nut 5 and the second insulating element 7 .
- adjusting projections 4b extending in the longitudinal direction of the insulating element 4 are formed on the first insulating element 4 and are designed to engage corresponding adjustment depressions 2b of the housing wall 2 and thus determine the orientation of the first insulating element 4 in relation to the housing wall 2.
- FIG. 2 shows a partial sectional view of a bushing arrangement according to FIG Figures 1a to 1d .
- an outer connection plate 9 for making electrical contact with the conductor 3 .
- figure 3 shows an illustration of the feedthrough arrangement according to FIG 2 , rotated 90° around its longitudinal axis.
- a receiving area is provided within the second section 3" of the conductor, with a mechanical stop 3c (see Fig figure 3 ) for determining the orientation and preferably the position of the outer connection plate 9 in relation to the electrical conductor 3 is provided.
- the mechanical stop 3c in the present exemplary embodiment is designed as a milling in the end region of the conductor 3, with the outer connecting plate 9 having a corresponding bore, via which a screw, for example, can penetrate the milling.
- the outer connection plate 9 also has two solid screws in the present exemplary embodiment, with which the plate can be clamped on the conductor 3.
- the broadening 3a of the conductor 3 is wedge-shaped and opens into an inner connection plate 3d, which is used for contacting the conductor 3 on the inside.
- the opening 4a is designed to correspond to this - it therefore has a wedge-shaped depression or widening 4a' for accommodating the widening 3a, whereby by accommodating the widening 3a in the widening 4a', the orientation of the electrical conductor 3 in relation to the first insulating element 4 is fixed.
- a movement of the conductor 3 outwards through the first insulating element 4 is limited by the stop surface 3a' formed on the widening 3a resting on a corresponding surface in the widening 4a'.
- a first sealing ring 10 can be seen, which in the assembled state is arranged between the second insulating element 7 and the outside 2" of the housing wall 2 of the transformer system.
- the kit 1 has a second sealing ring 11, which in the assembled state on the wall 2 of the housing Transformer system facing away from the top of the second insulating member 7 is arranged.
- the second insulating element 7 has an opening 7a which is surrounded by the second sealing ring 11 together with the electrical conductors 3 accommodated therein.
- the cap 8 also has an opening 8a for the electrical conductor 3 to pass through, the cap 8 enclosing the second sealing ring 11 in the assembled state, the threaded section 3b of the electrical conductor 3 being on the second section 3" of the electrical conductor 3 in the assembled state State extends to above the cap 8 and the cap 8 can be clamped against the second sealing ring 11 by means of the nut 5 .
- the individual components of the implementation arrangement or the kit 1 according to the Figures 1 to 3 in figure 4 shown in an exploded view.
- the first insulating element 4 has an essentially cylindrical shape, with the respective clamping element 6 being able to be accommodated completely within the essentially circular circumference of the first insulating element 4 in the second position.
- the electrical conductor 3 is essentially in the form of a rod and has the connection plate 3d already mentioned in the first section 3'.
- the clamping elements 6 are designed in the form of small plates, with the first insulating element 4 having indentations 4c along its circumference for receiving the clamping elements 6, with the clamping element 6 having a tongue 6b which protrudes at least partially in the direction of the insulating element 4 in the assembled state and is supported on the insulating element 4 Formation of the respective clamping element 6 in the first position (P1) has pressing spring force.
- the clamping elements 6 also have the projection 6a on their outside facing away from the circumference of the insulating element 4 and opposite the tongue 6b, through which the clamping surface 6a' is formed for clamping on an inside 2' of the housing wall 2 of the transformer system.
- figure 5 relates to a perspective view of a clamping element 6 of the bushing arrangement according to FIG Figures 1 to 4
- figure 6 shows a sectional view of the clamping element 6 according to FIG figure 5
- the already mentioned tongue 6b On the side of the clamping element 6 opposite the projection 6a is the already mentioned tongue 6b which, in the assembled state, presses resiliently against the body of the first insulating element 4 and presses the clamping element 6 into the first position (P1).
- the clamping element 6 has an adjusting projection 6c, which protrudes at least partially in the direction of the first insulating element 4, in order to fix the position of the clamping element 6 in relation to the first Insulating element 4, wherein the first insulating element 4 has a corresponding recess 4c' for receiving the adjusting projection 6c.
- Figures 7a and 7b each show a section of the bushing arrangement according to FIGS Figures 1 to 6 , whereby Figure 7a the clamping elements 6 in a second position (P2) brought up to the periphery of the first insulating element 4 and Figure 7b Figure 12 shows the clamping elements 6 in a position projecting from the periphery of the first insulating element 4 (P1).
- the clamping elements 6 are arranged in such a way that they can be moved from a first position (P1) protruding from the circumference of the first insulating element 4 to a second position (P2) approaching the circumference of the first insulating element 4, with the clamping elements 6 are arranged on the first insulating element 4 in such a way that they are in the first position (P1) when the bushing arrangement is installed (in Figure 1d , Figure 2, Figure 3 , as well as Figure 7b shown) limit a displacement of the first insulating element 4 in the direction of the outside 2" of the housing wall 2 by clamping surfaces 6a' formed on the projections 6a of the clamping elements 6 against the housing wall 2 in the present exemplary embodiment.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Bodies (AREA)
- Insulators (AREA)
- Housings And Mounting Of Transformers (AREA)
Description
Die Erfindung betrifft einen Bausatz für eine Durchführungsanordnung zur elektrischen Anbindung einer Transformatoranlage durch eine Öffnung in einer Gehäusewand der Transformatoranlage.The invention relates to a kit for a bushing arrangement for the electrical connection of a transformer system through an opening in a housing wall of the transformer system.
Eine Durchführungsanordnung für Transformatoren geht beispielsweise aus der
Es ist daher eine Aufgabe der Erfindung eine Durchführungsanordnung zu schaffen, die einfach und rasch montiert werden kann. Diese Aufgabe wird mit einem Bausatz der eingangs genannten Art gelöst, der erfindungsgemäß einen länglich ausgebildeten elektrischen Leiter sowie zumindest ein in die Öffnung der Gehäusewand einsetzbares erstes Isolierelement umfasst, wobei entlang der Längserstreckung des Leiters zumindest ein im montierten Zustand in Bezug auf die Gehäusewand innenliegender erster Abschnitt sowie ein im montierten Zustand in Bezug auf die Gehäusewand außenliegender zweiter Abschnitt ausgebildet ist, und wobei das zumindest eine erste Isolierelement eine Öffnung zur zumindest teilweisen Aufnahme des Leiters aufweist, wobei die Öffnung des Isolierelements zur Führung des Leiters von einer Außenseite der Gehäusewand hin zu einer Innenseite der Gehäusewand eingerichtet ist, wobei der erste Abschnitt des elektrischen Leiters eine Verbreiterung aufweist, die eine Anschlagsfläche zur Begrenzung einer Längsverschiebung des Leiters durch die Öffnung des ersten Isolierelements in Richtung der Außenseite der Gehäusewand ausbildet, wobei der zweite Abschnitt des elektrischen Leiters einen Gewindeabschnitt zur Aufnahme einer Schraubmutter zum Festspannen des Leiters gegen eine Außenseite der Gehäusewand aufweist, wobei das zumindest eine erste Isolierelement zumindest ein Klemmelement aufweist, das von einer von dem Umfang des zumindest einen ersten Isolierelements abstehenden ersten Position in eine an den Umfang des zumindest einen ersten Isolierelements herangerückte zweite Position bringbar ist, wobei das zumindest eine Klemmelement dergestalt an dem zumindest einen ersten Isolierelement angeordnet ist, dass es in der ersten Position im eingebauten Zustand der Durchführungsanordnung eine Verschiebung des zumindest einen ersten Isolierelements in Richtung der Außenseite der Gehäusewand begrenzt.It is therefore an object of the invention to create a bushing arrangement that can be installed easily and quickly. This object is achieved with a kit of the type mentioned at the outset, which, according to the invention, comprises an elongate electrical conductor and at least one first insulating element that can be inserted into the opening in the housing wall, with at least one first section as well as a second section lying on the outside in relation to the housing wall in the assembled state, and wherein the at least one first insulating element has an opening for at least partially accommodating the conductor, the opening of the insulating element for guiding the conductor from an outside of the housing wall towards an inside of the housing wall, wherein the first section of the electrical conductor has a widening which forms a stop surface for limiting a longitudinal displacement of the conductor through the opening in the first insulating element in the direction of the outside of the housing wall, the second section of the electrical conductor having a threaded section for receiving a Screw nut for clamping the conductor against an outside of the housing wall, wherein the at least one first insulating element has at least one clamping element, which extends from a first position protruding from the circumference of the at least one first insulating element to a second position approaching the circumference of the at least one first insulating element can be brought, the at least one clamping element being arranged on the at least one first insulating element in such a way that in the first position when the bushing arrangement is installed it limits displacement of the at least one first insulating element towards the outside of the housing wall.
Durch den erfindungsgemäßen Bausatz wird eine Durchführungsanordnung geschaffen, die bereits vormontiert werden kann und im vormontierten Zustand von außen in die Öffnung der Gehäusewand der Transformatoranlage eingeschoben und von außen montiert werden kann. Dabei wird das zumindest eine Klemmelement während des Einschiebens durch die Öffnung der Gehäusewand in die an den Umfang des zumindest einen ersten Isolierelements herangerückte zweite Position gebracht, wobei das zumindest eine Klemmelemente- sobald es die Öffnung der Gehäusewand passiert hat - wiederum in die erste Position gebracht wird, und so gegen ein Herausziehen der Durchführungsanordnung sichert. Wie nachfolgend noch genauer beschrieben ist, kann das zumindest eine Klemmelement die erste Position beispielsweise selbständig durch Federkraft oder durch die Wirkung der Schwerkraft einnehmen oder auch durch andere Wirkmechanismen wie Anziehen einer an dem Gewindeabschnitt des elektrischen Leiters angeordneten Schraubmutter in die erste Position gebracht werden. Durch Festziehen einer an dem Gewindeabschnitt des elektrischen Leiters angeordnete Schraubmutter wird der Leiter gegen die Außenseite der Gehäusewand verspannt (wobei zwischen der Schraubmutter und der Gehäusewand typischerweise weitere Elemente angeordnet sein können, wie beispielsweise einer nachfolgend noch erwähnten Kappe, Dichtringe, etc.), indem der Leiter aufgrund seiner Verbreiterung im ersten Abschnitt gegen das zumindest eine Isolierelement drückt und in seiner Bewegung hinaus aus dem Inneren der Transformatoranlage begrenzt ist.The kit according to the invention creates a bushing arrangement that can already be preassembled and, in the preassembled state, can be inserted from the outside into the opening in the housing wall of the transformer system and assembled from the outside. During insertion through the opening in the housing wall, the at least one clamping element is brought into the second position, approaching the periphery of the at least one first insulating element, with the at least one clamping element being brought back into the first position as soon as it has passed the opening in the housing wall is, and thus secured against pulling out the bushing arrangement. As is described in more detail below, the at least one clamping element can, for example, assume the first position independently by spring force or the effect of gravity, or can also be brought into the first position by other mechanisms such as tightening a screw nut arranged on the threaded section of the electrical conductor. By tightening a screw nut arranged on the threaded section of the electrical conductor, the conductor is braced against the outside of the housing wall (whereby further elements can typically be arranged between the screw nut and the housing wall, such as a cap, sealing rings, etc. mentioned below), by the conductor, due to its broadening in the first section, presses against the at least one insulating element and is restricted in its movement out of the interior of the transformer installation.
Der Ausdruck "Umfang des zumindest einen ersten Isolierelements" ist so zu verstehen, dass dieser ohne den zumindest einen ersten Klemmelement gebildet wird - es wird dabei also die Form der Klemmelemente selbst nicht dem Umfang des Isolierelements zugerechnet. Durch Festziehen der Schraubmutter, die im ebenso einen Bestandteil des Bausatzes ausbilden kann, wird die Durchführungsanordnung in seiner Position fixiert. Das zumindest eine Klemmelement verhindert dabei ein Herausrutschen der Durchführungsanordnung. Dadurch ist es möglich, die Durchführungsanordnung von außen rasch zu montieren, ohne dabei einen Zugang für Montagewerkzeuge in den Innenbereich der Transformatoranlage zu benötigen. Die Spannung, die durch die Durchführungsanordnung in den Transformator eingeleitet bzw. von diesem ausgeleitet wird, beträgt beispielsweise 1 bis 3kV. Die Ströme, die durch die Durchführungsanordnung zu- oder abgeleitet werden können, betragen beispielsweise 1250 A. Im Falle eines Drehstromsystems kann jeder Phase eine Durchführungsanordnung zugeordnet werden. Die Öffnungen in der Gehäusewand einer Transformatoranlage sind typischerweise für bestimmte Durchführungsanordnungen angepasst bzw. umgekehrt. Die Durchführungsanordnung kann daher für die jeweilige Anwendung bzw. Gehäuseöffnung entsprechend dimensioniert sein.The expression "circumference of the at least one first insulating element" is to be understood as meaning that it is formed without the at least one first clamping element - the shape of the clamping elements themselves is therefore not included in the scope of the insulating element. The bushing arrangement is fixed in its position by tightening the screw nut, which can also form part of the kit. The at least one clamping element prevents the bushing arrangement from slipping out. This makes it possible to quickly assemble the bushing arrangement from the outside, without requiring access for assembly tools to the interior of the transformer system. The voltage that is introduced into the transformer through the bushing arrangement and is discharged from it is, for example, 1 to 3 kV. The currents that can be supplied or discharged through the bushing arrangement are, for example, 1250 A. In the case of a three-phase system, a bushing arrangement can be assigned to each phase. The openings in the housing wall of a transformer system are typically adapted for specific bushing arrangements and vice versa. The bushing arrangement can therefore be appropriately dimensioned for the respective application or housing opening.
Insbesondere kann vorgesehen sein, dass das zumindest eine Klemmelement federnd an dem zumindest einen ersten Isolierelement angeordnet ist, wobei die Federkraft dergestalt gewählt ist, dass das Klemmelement durch die Federkraft von der zweiten Position in die erste Position gedrückt wird. Dadurch kann auf robuste Weise sichergestellt werden, dass das zumindest eine Klemmelement während des Führens des zumindest einen Isolierelements durch die Öffnung der Gehäusewand entgegen der Federkraft in die zweite Position gedrückt wird und nach Durchtritt der Öffnung der Gehäusewand in die erste Position wechselt. Damit ist eine Art "Klick-Verbindung" geschaffen, wobei vorzugsweise das Einrasten des Klemmelements in der ersten Position hörbar ist, sodass ein Monteur in einfacher Weise auf die korrekte Einnahme der ersten Position rückschließen kann.In particular, it can be provided that the at least one clamping element is arranged resiliently on the at least one first insulating element, the spring force being selected such that the clamping element is pressed by the spring force from the second position into the first position. This makes it possible to ensure in a robust manner that the at least one clamping element is pressed against the spring force into the second position while the at least one insulating element is being guided through the opening in the housing wall and changes to the first position after passing through the opening in the housing wall. A kind of “click connection” is thus created, with the locking of the clamping element in the first position preferably being audible, so that a fitter can easily conclude that the first position has been correctly assumed.
Vorzugsweise kann das zumindest eine Klemmelement dergestalt angeordnet sein, dass es durch Einwirken einer Kraftkomponente, die in Richtung der Öffnung des zumindest einen Isolierelements wirkt, in die zweite Position wechseln kann. Wird die Durchführungsanordnung in eine Öffnung einer Gehäusewand einer Transformatoranlage eingesetzt, so kann das Klemmelement bei Kontakt mit der die Öffnung begrenzenden Wand in die zweite Position wechseln, wodurch eine Blockade es Einführens der Durchführungsanordnung in die Gehäuseöffnung verhindert werden kann. Sofern das zumindest eine Klemmelement federnd in die erste Position gedrückt wird, kann das zumindest eine Klemmelement entgegen der Federkraft in die zweite Position gebracht werden, die das Klemmelement nach Durchtritt der Gehäuseöffnung wieder hin zur ersten Position verlässt.The at least one clamping element can preferably be arranged in such a way that it can change into the second position through the action of a force component which acts in the direction of the opening of the at least one insulating element. If the bushing arrangement is inserted into an opening in a housing wall of a transformer system, the clamping element can switch to the second position upon contact with the wall delimiting the opening, thereby blocking the insertion of the Feedthrough arrangement can be prevented in the housing opening. If the at least one clamping element is resiliently pressed into the first position, the at least one clamping element can be brought into the second position against the spring force, which leaves the clamping element after passing through the housing opening back to the first position.
Zudem kann vorgesehen sein, dass das zumindest eine erste Isolierelement eine im Wesentlichen zylindrische Form aufweist, wobei das zumindest eine Klemmelement in der zweiten Position vollständig innerhalb der Umfangsfläche (die in dieser Ausführungsform einer Mantelfläche eines Zylinders entspricht) des zumindest einen ersten Isolierelements aufgenommen ist, wobei der elektrische Leiter stabförmig ausgebildet ist und die Öffnung des zumindest einen ersten Isolierelements zur formschlüssigen Aufnahme eines durch das erste Isolierelement erstreckenden Abschnitts des elektrischen Leiters ausgebildet ist. Dadurch kann das zumindest eine Klemmelement vollständig innerhalb der Form des zumindest einen ersten Isolierelements aufgenommen sein, wodurch eine besonders formschlüssige Dimensionierung des Umfangs des zumindest einen ersten Isolierelements in Bezug auf die Gehäuseöffnung vorgenommen werden kann.In addition, it can be provided that the at least one first insulating element has a substantially cylindrical shape, with the at least one clamping element being accommodated completely within the peripheral surface (which in this embodiment corresponds to a lateral surface of a cylinder) of the at least one first insulating element, wherein the electrical conductor is rod-shaped and the opening of the at least one first insulating element is designed to receive a section of the electrical conductor that extends through the first insulating element in a form-fitting manner. As a result, the at least one clamping element can be accommodated completely within the shape of the at least one first insulating element, as a result of which the circumference of the at least one first insulating element can be dimensioned in a particularly form-fitting manner in relation to the housing opening.
Zur besonders form- und positionsstabilen Verbindung der Durchführungsanordnung mit der Transformatoranlage kann vorgesehen sein, dass zumindest zwei, drei, vier oder mehr Klemmelemente an dem zumindest einen ersten Isolierelement angeordnet sind, wobei die Klemmelemente vorzugsweise gleichmäßig entlang des Umfangs des ersten Isolierelements, bevorzugt auf gleicher Höhe, angeordnet sind. Die Klemmflächen der einzelnen Klemmelemente bilden damit eine gemeinsame Ebene aus, wodurch eine besonders stabile und gleichmäßige Klemmwirkung erzielt wird, die zudem die Orientierung der Durchführung in Bezug auf die Gehäusewand eindeutig festlegt.For a connection of the bushing arrangement to the transformer system that is particularly stable in terms of shape and position, it can be provided that at least two, three, four or more clamping elements are arranged on the at least one first insulating element, with the clamping elements preferably being arranged uniformly along the circumference of the first insulating element, preferably on the same height, are arranged. The clamping surfaces of the individual clamping elements thus form a common plane, as a result of which a particularly stable and uniform clamping effect is achieved, which also clearly defines the orientation of the bushing in relation to the housing wall.
Besonders günstig kann es sein, wenn das zumindest eine Klemmelement plättchenförmig ausgebildet ist, wobei das zumindest eine erste Isolierelement entlang seines Umfanges jeweils eine Vertiefung zur Aufnahme des jeweiligen Klemmelements aufweist, wobei das zumindest eine Klemmelement eine im montierten Zustand zumindest teilweise in Richtung des zumindest einen Isolierelements abstehende, an dem Isolierelement abstützende Zunge zur Ausbildung einer das Klemmelement in die erste Position drückenden Federkraft aufweist, wobei das zumindest eine Klemmelement zudem an seiner von dem Umfang des Isolierelements abgewandten, der Zunge gegenüberliegenden Außenseite einen Justiervorsprung aufweist, durch den eine Klemmfläche zur Klemmung an einer Innenseite der Gehäusewand der Transformatoranlage ausgebildet ist.It can be particularly favorable if the at least one clamping element is designed in the form of a small plate, with the at least one first insulating element having a depression along its circumference for receiving the respective clamping element, with the at least one clamping element in the assembled state being at least partially in the direction of the at least one The insulating element has a protruding tongue that is supported on the insulating element in order to form a spring force that presses the clamping element into the first position, the at least one clamping element also extending from the circumference of the at least one clamping element Isolating member facing away from the tongue opposite outside has an adjusting projection through which a clamping surface is formed for clamping on an inside of the housing wall of the transformer system.
Zur genauen Festlegung der Position des zumindest einen Klemmelements in Bezug auf das zumindest eine erste Isolierelement kann vorgesehen sein, dass das zumindest eine Klemmelement einen im montierten Zustand zumindest teilweise in Richtung des zumindest einen ersten Isolierelements abstehende Justiervorsprung zur Festlegung der Position des zumindest einen Klemmelements in Bezug auf das zumindest eine erste Isolierelement aufweist, wobei das zumindest eine erste Isolierelement eine korrespondierende Vertiefung zur Aufnahme des Justiervorsprungs aufweist.In order to precisely determine the position of the at least one clamping element in relation to the at least one first insulating element, provision can be made for the at least one clamping element to have an adjusting projection protruding at least partially in the direction of the at least one first insulating element in the assembled state in order to determine the position of the at least one clamping element in Having reference to the at least one first insulating element, wherein the at least one first insulating element has a corresponding depression for receiving the adjusting projection.
Um die Orientierung des Isolierelements in Bezug auf die Gehäuseöffnung der Transformatoranlage festzulegen, kann vorgesehen sein, dass an dem zumindest einen ersten Isolierelement zumindest ein in Längsrichtung des Isolierelements erstreckender Justiervorsprung oder eine Justiervertiefung Sicherung des Isolierelements gegen ein Verdrehen in Bezug auf die Öffnung der Gehäusewand ausgebildet ist, wobei vorzugsweise mehrere Justiervorsprünge oder Justiervertiefungen vorgesehen sind. Die Durchführungsanordnung kann damit in korrespondierende Justieröffnungen oder Justiervertiefungen der Gehäuseöffnung der Transformatoranlage eingreifen. Zudem wird die Durchführungsanordnung auf diese Weise gegen ein Verdrehen gesichert.In order to define the orientation of the insulating element in relation to the housing opening of the transformer system, it can be provided that at least one adjusting projection extending in the longitudinal direction of the insulating element or an adjusting depression is formed on the at least one first insulating element to prevent the insulating element from twisting in relation to the opening in the housing wall is, preferably several adjustment projections or adjustment recesses are provided. The bushing arrangement can thus engage in corresponding adjustment openings or adjustment depressions in the housing opening of the transformer system. In addition, the leadthrough arrangement is secured against twisting in this way.
Zudem kann es zweckmäßig sein, wenn der Bausatz ein zweites Isolierelement umfasst, das zur Umschließung jenes Abschnittes des zumindest einen ersten Isolierelements eingerichtet ist, der im montierten Zustand von der Außenseite der Gehäusewand absteht, wobei das zweite Isolierelement ebenso eine Öffnung zur Führung des elektrischen Leiters aufweist.In addition, it can be expedient if the kit comprises a second insulating element which is set up to enclose that section of the at least one first insulating element which protrudes from the outside of the housing wall in the assembled state, with the second insulating element also having an opening for guiding the electrical conductor having.
Insbesondere kann vorgesehen sein, dass der Bausatz einen ersten Dichtring umfasst, der im montierten Zustand zwischen dem zweiten Isolierelement und der Außenseite der Gehäusewand der Transformatoranlage angeordnet ist, wobei der Bausatz zudem einen zweiten Dichtring aufweist, der im montierten Zustand an der von der Gehäusewand der Transformatoranlage abgewandten Oberseite des zweiten Isolierelements angeordnet ist und die Öffnung des zweiten Isolierelements sowie den darin aufgenommenen elektrischen Leiter umschließt, wobei der Bausatz ferner eine Kappe aufweist, die ebenso eine Öffnung zur Durchführung des elektrischen Leiters aufweist und im montierten Zustand den zweiten Dichtring umschließt, wobei sich der Gewindeabschnitt an dem zweiten Abschnitt des elektrischen Leiters im montierten Zustand bis oberhalb des Kappe erstreckt und die Kappe mittels einer Schraubmutter gegen den zweiten Dichtring festspannbar ist. Der zweite Dichtring drückt gegen das zweite Isolierelement, das wiederum gegen den ersten Dichtring auf die Gehäusewand der Transformatoranlage drückt. Damit ist ein robuster Aufbau einer Durchführungsanordnung geschaffen, die aufgrund der hervorragenden Dichtungseigenschaften besonders für den Einsatz bei fluidgefüllten Transformatoranlagen geeignet ist. In Kombination mit diesen Merkmalen kann es besonders günstig sein, wenn der Bausatz dergestalt ausgelegt ist, dass im montierten Zustand die Verbreiterung des ersten Abschnitts des elektrischen Leiters gegen das erste Isolierelement und damit gegen die Innenseite der Gehäusewand der Transformatoranlage drückt, indem eine an dem Gewindeabschnitt des elektrischen Leiters angreifende Schraubmutter den elektrischen Leiter mittels der Kappe über einen Kraftschluss über den zweiten Dichtring, das zweite Isolierelement und den ersten Dichtring gegen die Außenseite der Gehäusewand spannt. Die an dem elektrischen Leiter wirkenden Kräfte sind damit im Gleichgewicht, wobei die auf die Dichtungen wirkenden Kräfte durch entsprechende Wahl des Anziehmoments der Schraubmutter festgelegt werden können.In particular, it can be provided that the kit comprises a first sealing ring which, in the assembled state, is arranged between the second insulating element and the outside of the housing wall of the transformer system, with the kit also having a second sealing ring, which in the assembled state is attached to the housing wall of the Transformer system remote top of the second insulating member is arranged and encloses the opening of the second insulating member and the electrical conductor accommodated therein, wherein the kit further comprises a cap, which also has an opening to Has passage of the electrical conductor and encloses the second sealing ring in the assembled state, wherein the threaded portion on the second portion of the electrical conductor extends in the assembled state to above the cap and the cap can be clamped against the second sealing ring by means of a nut. The second sealing ring presses against the second insulating element, which in turn presses against the first sealing ring on the housing wall of the transformer system. This creates a robust structure for a bushing arrangement which, due to the excellent sealing properties, is particularly suitable for use in fluid-filled transformer systems. In combination with these features, it can be particularly favorable if the kit is designed in such a way that, in the assembled state, the broadening of the first section of the electrical conductor presses against the first insulating element and thus against the inside of the housing wall of the transformer system by a screw on the threaded section the nut engaging the electrical conductor clamps the electrical conductor against the outside of the housing wall by means of the cap via a non-positive connection via the second sealing ring, the second insulating element and the first sealing ring. The forces acting on the electrical conductor are thus in equilibrium, with the forces acting on the seals being able to be determined by appropriate selection of the tightening torque of the screw nut.
Um die Orientierung des elektrischen Leiters in Bezug auf die Gehäusewand bzw. das zumindest eine Isolierelement festzulegen, kann vorgesehen sein, dass die Öffnung des zumindest einen ersten Isolierelements eine zur Verbreiterung des ersten Abschnitts des elektrischen Leiters korrespondierende Erweiterung aufweist, wobei die Verbreiterung sowie die Erweiterung dergestalt gewählt ist, dass bei Aufnahme der Verbreiterung in der Erweiterung die Orientierung des elektrischen Leiters in Bezug auf das zumindest eine erste Isolierelement festgelegt ist.In order to determine the orientation of the electrical conductor in relation to the housing wall or the at least one insulating element, it can be provided that the opening of the at least one first insulating element has a widening that corresponds to the widening of the first section of the electrical conductor, with the widening and the widening is selected in such a way that the orientation of the electrical conductor in relation to the at least one first insulating element is fixed when the widening is accommodated in the widening.
Um die Orientierung des außenliegenden Anschlussteiles in Bezug auf die Durchführungsanordnung festlegen zu können, kann vorgesehen sein, dass der im montierten Zustand in Bezug auf die Gehäusewand außenliegende zweite Abschnitt des elektrischen Leiters einen Aufnahmebereich zur Befestigung einer außenliegenden äußeren Anschlussteils aufweist, wobei innerhalb des Aufnahmebereichs ein mechanischer Anschlag zur Festlegung der Orientierung sowie vorzugsweise der Position des außenliegenden Anschlussteils in Bezug auf den elektrischen Leiter vorgesehen ist.In order to be able to determine the orientation of the external connection part in relation to the bushing arrangement, it can be provided that the second section of the electrical conductor, which is on the outside in relation to the housing wall in the assembled state, has a receiving area for fastening an external external connection part, with a mechanical stop is provided for determining the orientation and preferably the position of the external connection part in relation to the electrical conductor.
Um die Orientierung einer inneren Anschlussplatte in Bezug auf die Durchführungsanordnung festlegen zu können, kann vorgesehen sein, dass die Verbreiterung des ersten Abschnitts des elektrischen Leiters keilförmig ausgebildet ist und in einer inneren Anschlussplatte mündet. Der Ausdruck "innen" bezieht sich dabei nur auf den montierten Zustand und nimmt Bezug auf die Transformatoranlage, wobei "innen" eine Anordnung innerhalb des Transformatoranlagengehäuses und "außen" eine Anordnung außerhalb dieses Gehäuses bezeichnet.In order to be able to define the orientation of an inner connection plate in relation to the bushing arrangement, it can be provided that the widening of the first section of the electrical conductor is wedge-shaped and opens into an inner connection plate. The expression "inside" relates only to the assembled state and refers to the transformer system, with "inside" designating an arrangement inside the transformer system housing and "outside" an arrangement outside this housing.
Die Erfindung betrifft ebenso eine Durchführungsanordnung zusammengesetzt aus einem erfindungsgemäßen Bausatz.The invention also relates to a bushing arrangement composed of a kit according to the invention.
Die Erfindung ist im Folgenden anhand einer beispielhaften und nicht einschränkenden Ausführungsform näher erläutert, die in den Figuren veranschaulicht ist. Darin zeigen
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Figuren 1a bis 1d eine schematische Darstellung eines Montagevorganges einer Durchführungsanordnung gemäß einer Ausführungsform eines erfindungsgemäßen Bausatzes, -
eine teilweise Schnittdarstellung einer Durchführungsanordnung gemäßFigur 2Fig. 1a bis Fig. 1d , -
eine Darstellung der Durchführungsanordnung gemäßFigur 3Fig. 2 , die um 90° um ihre Längsachse gedreht wurde, -
eine Explosionsdarstellung der Durchführungsanordnung gemäßFigur 4den Figuren 1 ,bis 3 -
eine perspektivische Darstellung eines Klemmelements der Durchführungsanordnung gemäßFigur 5den Figuren 1 ,bis 4 -
eine Schnittdarstellung des Klemmelements gemäßFigur 6Figur 5 , und -
Figuren 7a und 7b jeweils einen Ausschnitt der Durchführungsanordnung gemäßden Figuren 1 , wobeibis 6Figur 7a die Klemmelemente in einer an den Umfang eines Isolierelements herangeführten Position (P2) undFigur 7b die Klemmelemente in einer von dem Umfang eines Isolierelements abstehenden Position (P1) darstellt.
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Figures 1a to 1d a schematic representation of an assembly process of a bushing arrangement according to an embodiment of a kit according to the invention, -
figure 2 a partial sectional view of a bushing arrangement according to FIGFigures 1a to 1d , -
figure 3 a representation of the implementation arrangement according to2 , rotated 90° around its longitudinal axis, -
figure 4 an exploded view of the implementation arrangement according to theFigures 1 to 3 , -
figure 5 a perspective view of a clamping element of the bushing assembly according to theFigures 1 to 4 , -
figure 6 according to a sectional view of the clamping elementfigure 5 , and -
Figures 7a and 7b each a section of the implementation arrangement according toFigures 1 to 6 , wherebyFigure 7a the clamping elements in a position (P2) brought up to the periphery of an insulating element andFigure 7b Figure 10 shows the clamping elements in a projecting position (P1) from the periphery of an insulating element.
In den folgenden Figuren bezeichnen - sofern nicht anders angegeben - gleiche Bezugszeichen gleiche Merkmale.Unless otherwise stated, the same reference symbols designate the same features in the following figures.
- einen länglich ausgebildeten elektrischen
Leiter 3, wobei entlang der Längserstreckung desLeiters 3 zumindest ein im montierten Zustand in Bezug auf dieGehäusewand 2 innenliegender erster Abschnitt 3' sowie ein im montierten Zustand in Bezug auf die Gehäusewand außenliegender zweiter Abschnitt 3" ausgebildet ist, und - zumindest ein in
die Öffnung 2a der Gehäusewand 2 einsetzbares erstes Isolierelement 4,das eine Öffnung 4a zur zumindest teilweisen Aufnahme desLeiters 3 aufweist,wobei die Öffnung 4a zur Führung desLeiters 3 von einerAußenseite 2"der Gehäusewand 2 hin zu einer Innenseite 2'der Gehäusewand 2 eingerichtet ist.
- an elongate
electrical conductor 3, with at least one first section 3' lying on the inside in relation to thehousing wall 2 in the assembled state and asecond section 3" lying on the outside in relation to the housing wall in the assembled state being formed along the longitudinal extension of theconductor 3, and - at least one first insulating
element 4 that can be inserted into theopening 2a of thehousing wall 2 and has anopening 4a for at least partially accommodating theconductor 3, theopening 4a for guiding theconductor 3 from an outside 2" of thehousing wall 2 to an inside 2' thehousing wall 2 is set up.
Der erste Abschnitt 3' des elektrischen Leiters 3 weist eine Verbreiterung 3a (siehe
In
Das zweite Isolierelement 7 weist eine Öffnung 7a auf, die gemeinsam mit den darin aufgenommenen elektrischen Leiter 3 von dem zweiten Dichtring 11 umschlossen ist. Die Kappe 8 weist ebenfalls eine Öffnung 8a zur Durchführung des elektrischen Leiters 3 auf, wobei die Kappe 8 im montierten Zustand den zweiten Dichtring 11 umschließt, wobei sich der Gewindeabschnitt 3b des elektrischen Leiters 3 an dem zweiten Abschnitt 3" des elektrischen Leiters 3 im montierten Zustand bis oberhalb der Kappe 8 erstreckt und die Kappe 8 mittels der Schraubmutter 5 gegen den zweiten Dichtring 11 festspannbar ist.The second
Zur besseren Übersicht sind die einzelnen Komponenten der Durchführungsanordnung bzw. des Bausatzes 1 gemäß den
Wie in den
Claims (15)
- Kit (1) for a bushing arrangement for the electrical connection of a transformer installation through an opening (2a) in a housing wall (2) of the transformer installation, the kit (1) comprising- an elongated electrical conductor (3), wherein along the longitudinal extension of the conductor (3) there is formed at least a first section (3') which in the assembled state lies on the inside with respect to the housing wall (2) and a second section (3") which in the assembled state lies on the outside with respect to the housing wall (2), and- at least one first insulating element (4) which can be inserted into the opening (2a) of the housing wall (2) and has an opening (4a) for at least partially receiving the conductor (3), the opening (4a) of the insulating element (4) being set up for guiding the conductor (3) from an outer side (2") of the housing wall (2) to an inner side (2') of the housing wall (2)wherein the first section (3') of the electrical conductor (3) has a widening (3a) forming a stop surface (3a') for limiting a longitudinal displacement of the conductor (3) through the opening (4a) of the first insulating element (4) in the direction of the outside of the housing wall (2),wherein the second portion (3") of the electrical conductor (3) has a threaded portion (3b) for receiving a screw nut (5) for tightening the conductor (3) against an outer side (2") of the housing wall (2),wherein the at least one first insulating element (4) comprises at least one clamping element (6) which can be brought from a first position (P1) projecting from the periphery of the at least one first insulating element (4) into a second position (P2) approaching the periphery of the at least one first insulating element (4), wherein the at least one clamping element (6) is arranged on the at least one first insulating element (4) in such a way that, in the first position (P1), it limits a displacement of the at least one first insulating element (4) in the direction of the outside (2") of the housing wall (2) in the installed state of the bushing arrangement.
- Kit (1) for a bushing arrangement according to claim 1, wherein the at least one clamping element (6) is resiliently arranged on the at least one first insulating element (4), wherein the spring force is selected such that the clamping element (6) is pressed by the spring force from the second position (P2) into the first position (P1).
- Kit (1) for a feed-through arrangement according to claim 1 or 2, wherein the at least one clamping element (6) is arranged such that it can change to the second position (P2) by the action of a force component acting in the direction of the opening (4a) of the at least one insulating element (4).
- Kit (1) for a feedthrough arrangement according to one of the preceding claims, wherein the at least one first insulating element (4) has a substantially cylindrical shape, wherein the at least one clamping element (6) is accommodated completely within the circumferential surface of the at least one first insulating element (4) in the second position (P2), wherein the electrical conductor (3) is rod-shaped and the opening (4a) of the at least one first insulating element (4) is designed for positive reception of a section of the electrical conductor (3) extending through the first insulating element (4).
- Kit (1) for a feedthrough arrangement according to any one of the preceding claims, wherein at least two, three, four or more clamping elements (6) are arranged on the at least one first insulating element (4), wherein the clamping elements (6) are preferably arranged uniformly along the circumference of the first insulating element (4), preferably at the same height.
- Kit (1) for a feed-through arrangement according to one of the preceding claims, wherein the at least one clamping element (6) is designed in the form of a platelet, wherein the at least one first insulating element (4) has a respective depression (4c) along its circumference for receiving the respective clamping element (6), wherein the at least one clamping element (6) has an at least partially protruding edge in the assembled state in the direction of the at least one insulating element (4), insulating element (4) in the assembled state, for forming a spring force which presses the clamping element (6) into the first position, the at least one clamping element (6) furthermore having, on its outer side facing away from the circumference of the insulating element (4) and opposite the tongue (6b), a projection (6a) by means of which a clamping surface (6a') is formed for clamping on an inner side (2') of the housing wall (2) of the transformer installation.
- Kit (1) for a bushing arrangement according to claim 6, wherein the at least one clamping element (6) has an adjusting projection (6c), which in the assembled state projects at least partially in the direction of the at least one first insulating element (4), for fixing the position of the at least one clamping element (6) with respect to the at least one first insulating element (4), wherein the at least one first insulating element (4) has a corresponding recess (4c') for receiving the adjusting projection (6c).
- Kit (1) for a feedthrough arrangement according to one of the preceding claims, wherein at least one adjusting projection (4b) or adjusting recess extending in the longitudinal direction of the insulating element (4) is formed on the at least one first insulating element (4) for securing the insulating element against rotation with respect to the opening (2a) of the housing wall (2), preferably a plurality of adjusting projections (4b) or adjusting recesses being provided.
- Kit (1) for a feed-through arrangement according to one of the preceding claims, wherein the kit (1) comprises a second insulating element (7) arranged to enclose that portion of the at least one first insulating element (4) which, in the assembled state, protrudes from the outside of the housing wall (2), the second insulating element (7) also having an opening (7a) for guiding the electrical conductor (3).
- Kit (1) for a bushing arrangement according to any one of the preceding claims, wherein the kit (1) comprises a first sealing ring (10) which, in the assembled state, is arranged between the second insulating element (7) and the outside (2") of the housing wall (2) of the transformer installation, wherein the kit (1) further comprises a second sealing ring (11) which, in the assembled state, is arranged on the upper side of the second insulating element (7) facing away from the housing wall (2) of the transformer equipment and encloses the opening (7a) of the second insulating element (7) and the electrical conductor (3) accommodated therein, wherein the kit (1) further comprises a cap (8) which likewise comprises an opening (8a) for the passage of the electrical conductor (3) and in the assembled state encloses the second sealing ring (11), wherein the threaded portion (3b) on the second portion (3") of the electrical conductor (3) in the assembled state extends to above the cap (8) and the cap (8) can be tightened against the second sealing ring (11) by means of a screw nut (5).
- Kit (1) for a bushing arrangement according to claim 10, wherein kit (1) is designed in such a way that, in the assembled state, the widening (3a) of the first section of the electrical conductor (3) presses against the first insulating element (4) and thus against the inside of the housing wall (2) of the transformer installation, in that a screw nut (5) engaging on the threaded section (3a) of the electrical conductor (3) tightens the electrical conductor (3) against the outside of the housing wall (2) by means of the cap (8) via a frictional connection via the second sealing ring (11), the second insulating element (7) and the first sealing ring (10).
- Kit (1) for a feedthrough arrangement according to any one of the preceding claims, wherein the opening (4a) of the at least one first insulating element (4) has an extension (4a') corresponding to the widening (3a) of the first portion of the electrical conductor (3), wherein the widening (3a) and the extension (4a') are selected in such a way that, when the widening (3a) is accommodated in the extension (4a'), the orientation of the electrical conductor (3) with respect to the at least one first insulating element (4) is fixed.
- Kit (1) for a bushing arrangement according to one of the preceding claims, wherein the second section (2") of the electrical conductor (3), which is on the outside in relation to the housing wall (2) in the assembled state, has a receiving area for fastening an outer connection plate (9), wherein a mechanical stop (3c) is provided inside the receiving area for fixing the orientation and preferably the position of the outer connection plate (9) in relation to the electrical conductor (3).
- Kit (1) for a bushing arrangement according to one of the preceding claims, wherein the widening (3a) of the first section (3') of the conductor (3) is wedge-shaped and opens into an inner connection plate (3d).
- Feedthrough arrangement composed of a kit (1) according to any one of the preceding claims.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17173963.4A EP3410448A1 (en) | 2017-06-01 | 2017-06-01 | Assembly kit for a feedthrough |
PCT/EP2018/062540 WO2018219637A1 (en) | 2017-06-01 | 2018-05-15 | Kit for a lead-through arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3631820A1 EP3631820A1 (en) | 2020-04-08 |
EP3631820B1 true EP3631820B1 (en) | 2023-05-24 |
Family
ID=59030782
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17173963.4A Withdrawn EP3410448A1 (en) | 2017-06-01 | 2017-06-01 | Assembly kit for a feedthrough |
EP18723016.4A Active EP3631820B1 (en) | 2017-06-01 | 2018-05-15 | Assembly kit for a feedthrough |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17173963.4A Withdrawn EP3410448A1 (en) | 2017-06-01 | 2017-06-01 | Assembly kit for a feedthrough |
Country Status (2)
Country | Link |
---|---|
EP (2) | EP3410448A1 (en) |
WO (1) | WO2018219637A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3731247B1 (en) | 2019-04-24 | 2021-11-10 | Preis & Co Ges.m.b.H. | Kit for a feedthrough assembly for electrically connecting a transformer system |
EP4372767A1 (en) * | 2022-11-16 | 2024-05-22 | Preis GmbH | Kit for a feedthrough assembly for electrically connecting a transformer system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3671920A (en) * | 1970-10-19 | 1972-06-20 | Sealectro Corp | Insulated electric terminal assembly |
ITMI20030678A1 (en) | 2003-04-07 | 2004-10-08 | Cedaspe S P A | INSULATOR FOR TRANSFORMERS |
JP2009081283A (en) * | 2007-09-26 | 2009-04-16 | Daihen Corp | Bushing for electric apparatus |
CN203444954U (en) * | 2013-09-02 | 2014-02-19 | 丹阳市金诺电器有限公司 | Combined type 1kV transformer bushing |
-
2017
- 2017-06-01 EP EP17173963.4A patent/EP3410448A1/en not_active Withdrawn
-
2018
- 2018-05-15 WO PCT/EP2018/062540 patent/WO2018219637A1/en active Application Filing
- 2018-05-15 EP EP18723016.4A patent/EP3631820B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3631820A1 (en) | 2020-04-08 |
EP3410448A1 (en) | 2018-12-05 |
WO2018219637A1 (en) | 2018-12-06 |
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