EP3631820A1 - Kit d'un ensemble de traversée - Google Patents

Kit d'un ensemble de traversée

Info

Publication number
EP3631820A1
EP3631820A1 EP18723016.4A EP18723016A EP3631820A1 EP 3631820 A1 EP3631820 A1 EP 3631820A1 EP 18723016 A EP18723016 A EP 18723016A EP 3631820 A1 EP3631820 A1 EP 3631820A1
Authority
EP
European Patent Office
Prior art keywords
insulating
kit
housing wall
opening
electrical conductor
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
EP18723016.4A
Other languages
German (de)
English (en)
Other versions
EP3631820B1 (fr
Inventor
Seyfi GEZER
Lukas Hauser
Mathias Tergatschnig
G nter CHRISTANDL
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.)
Preis & Co GesMBH
Original Assignee
Preis & Co GesMBH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Preis & Co GesMBH filed Critical Preis & Co GesMBH
Publication of EP3631820A1 publication Critical patent/EP3631820A1/fr
Application granted granted Critical
Publication of EP3631820B1 publication Critical patent/EP3631820B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 feedthrough assembly for the electrical connection of a transformer system through an opening in a housing wall of the transformer system.
  • a feed-through arrangement for transformers can be found, for example, in EP 1 614 127 B1.
  • 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 inside the opening of a housing wall of the transformer station.
  • the housing of the transformer system in this case has ground potential, the conductor, however, can be acted upon by a voltage to or over lkV and must therefore be sufficiently isolated from the housing wall by the arrangement of the insulating.
  • kit of the aforementioned type which according to the invention comprises an elongated electrical conductor and at least one insertable into the opening of the housing wall first insulating, wherein along the longitudinal extent of the conductor at least one in the mounted state with respect to the housing wall inside first Section and a mounted in the state in relation to the housing wall outboard second section, and wherein the at least one first insulating member having an opening for at least partially receiving the conductor, wherein the opening of the insulating member for guiding the conductor from an outer side of the housing wall towards an inside of the Housing wall is arranged, wherein the first portion of the electrical conductor has a widening, which forms a stop surface for limiting a longitudinal displacement of the conductor through the opening of the first insulating towards the outside of the housing wall, wherein the second portion of the electrical conductor has a threaded portion for receiving a Has nut for clamping the conductor against
  • a feed-through arrangement is created, which can be pre-assembled and inserted in the preassembled state from the outside into the opening of the housing wall of the transformer system and can be mounted from the outside.
  • the at least one clamping element is brought during insertion through the opening of the housing wall in the zoomed to the periphery of the at least one first insulating second position, said at least one Klemmieri- once it has passed through the opening of the housing wall - again brought into the first position and thus protects against pulling out of the execution arrangement.
  • the at least one clamping element can take the first position, for example, independently by spring force or by the action of gravity or by other action mechanisms such as tightening a arranged on the threaded portion of the electrical conductor screw nut can be brought into the first position.
  • tightening a threaded nut arranged on the threaded portion of the electrical conductor the conductor is clamped against the outside of the housing wall (wherein between the nut and the housing wall typically further elements may be arranged, such as a subsequently mentioned cap, sealing rings, etc.), by the conductor presses against the at least one insulating element due to its widening in the first section and is limited in its movement out of the interior of the transformer system.
  • the expression "circumference of the at least one first insulating element" should be understood to mean that it is formed without the at least one first clamping element - thus the shape of the clamping elements themselves is not added to the circumference of the insulating element by tightening the screw nut
  • the at least one clamping element thereby prevents the feed-through arrangement from slipping out, thereby making it possible to quickly assemble the feed-through arrangement from the outside, without access for assembly tools to the interior area of the transformer installation
  • the voltage that is conducted into or out of the transformer through the feedthrough arrangement is 1 to 3 kV.
  • the currents that can be fed in or out through the feedthrough arrangement are for example 1250 A.
  • each phase can be assigned a feed-through arrangement.
  • the openings in the housing wall of a transformer system are typically adapted for certain feedthrough arrangements or vice versa.
  • the feedthrough arrangement can therefore be dimensioned accordingly for the respective application or housing opening.
  • the at least one clamping element is resiliently arranged on the at least one first insulating element, wherein the spring force is chosen such that the clamping element is pressed by the spring force from the second position to the first position.
  • the spring force is chosen such that the clamping element is pressed by the spring force from the second position to the first position.
  • the at least one clamping element can be arranged such that it can change to the second position by the action of a force component which acts in the direction of the opening of the at least one insulating element. If the feed-through arrangement is inserted into an opening of a housing wall of a transformer installation, then the clamping element can change into the second position on contact with the wall delimiting the opening, thereby blocking the insertion of the wall Implementation 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 against the spring force in the second position, 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, wherein the at least one clamping element is completely accommodated in the second position within the peripheral surface (corresponding in this embodiment 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 for the positive reception of a portion of the electrical conductor extending through the first insulating element.
  • the at least one clamping element can be accommodated completely within the shape of the at least one first insulating element, whereby a particularly form-fitting dimensioning of the circumference of the at least one first insulating element with respect to the housing opening can be made.
  • At least two, three, four or more clamping elements are arranged on the at least one first insulating, wherein the clamping elements preferably evenly along the circumference of the first insulating, preferably on the same Height, are arranged.
  • the clamping surfaces of the individual clamping elements thus form a common plane, whereby a particularly stable and uniform clamping effect is achieved, which also clearly defines the orientation of the implementation with respect to the housing wall.
  • the at least one clamping element is platelet-shaped, wherein the at least one first insulating member along its circumference each having a recess for receiving the respective clamping element, said at least one clamping element in the mounted state, at least partially in the direction of at least one Having insulating, projecting, on the insulating element supporting tongue for forming a clamping element in the first position pushing spring force, wherein the at least one clamping element also at its from the scope of the Insulating facing away from the tongue outside has an adjusting projection through which a clamping surface is formed for clamping on an inner side of the housing wall of the transformer system.
  • the at least one clamping element has an adjusting projection projecting in the assembled state at least partially in the direction of the at least one first insulating element for determining the position of the at least one clamping element Reference to the at least one first insulating member, wherein the at least one first insulating member has a corresponding recess for receiving the Justiervorsprungs.
  • At least one adjusting projection extending in the longitudinal direction of the insulating element or an adjusting recess securing the insulating element against rotation with respect to the opening of the housing wall are formed on the at least one first insulating element is, wherein preferably a plurality of Justiervorsprünge or Justierveriana are provided.
  • the feedthrough arrangement can thus intervene in corresponding adjusting openings or adjusting recesses of the housing opening of the transformer system.
  • the bushing assembly is secured in this way against twisting.
  • the kit comprises a second insulating element which is arranged for enclosing that portion of the at least one first insulating member which protrudes in the assembled state from the outside of the housing wall, wherein the second insulating member also has an opening for guiding the electrical conductor having.
  • the kit comprises a first sealing ring which is arranged in the assembled state between the second insulating and the outside of the housing wall of the transformer system, wherein the kit also has a second sealing ring in the mounted state of the housing wall of the Transformer system facing away from the top of the second insulating member is disposed and surrounds the opening of the second insulating member and the electrical conductor received therein, wherein the kit further comprises a cap which also has an opening for Implementation of the electrical conductor and in the assembled state surrounds the second sealing ring, wherein the threaded portion extends to the second portion of the electrical conductor in the assembled state to above the cap and the cap is clamped by a nut against the second sealing ring.
  • 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.
  • a robust construction of a feed-through arrangement is created, which is particularly suitable for use in fluid-filled transformer systems due to the excellent sealing properties.
  • the kit is designed such that, in the mounted state, the widening 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 one on the threaded section engaging the electrical conductor screwing the electrical conductor by means of the cap via a frictional connection on the second sealing ring, the second insulating member and the first sealing ring against the outside of the housing wall.
  • the forces acting on the electrical conductor forces are thus in equilibrium, wherein the forces acting on the seals forces can be determined by appropriate choice of the tightening torque of the nut.
  • the opening of the at least one first insulating element has an extension corresponding to the broadening of the first section of the electrical conductor, the broadening and the widening is chosen such that when receiving the widening in the extension, the orientation of the electrical conductor is fixed with respect to the at least one first insulating.
  • the second section of the electrical conductor lying outside in the assembled state has a receiving area for fastening an outer, outer connection part, wherein within the receiving area mechanical stop for determining the orientation, and preferably the position of the outer connection part is provided with respect 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 invention also relates to a feedthrough assembly composed of a kit according to the invention.
  • FIGS. 1 a to 1 d show a schematic representation of an assembly process of a feed-through arrangement according to an embodiment of a kit according to the invention
  • FIG. 2 is a partial sectional view of a feed-through arrangement according to FIGS. 1 a to 1 d,
  • FIG. 3 shows an illustration of the feed-through arrangement according to FIG. 2, which has been rotated through 90 ° about its longitudinal axis, FIG.
  • FIG. 4 shows an exploded view of the feedthrough arrangement according to FIGS. 1 to 3,
  • FIG. 5 shows a perspective view of a clamping element of the feedthrough arrangement according to FIGS. 1 to 4, FIG.
  • Figure 6 is a sectional view of the clamping member according to Figure 5.
  • FIGS. 7a and 7b show a detail of the feed-through arrangement according to FIGS. 1 to 6, FIG. 7a showing the clamping elements in a position (P2) brought to the periphery of an insulating element and FIG. 7b the clamping elements in a position (PI) protruding from the circumference of an insulating element represents.
  • like reference numerals designate like features.
  • Figures la to ld show a schematic representation of an assembly process of a feed-through arrangement according to an embodiment of a kit according to the invention 1, wherein for clarity, the plurality of reference numerals are only inserted in Figure la.
  • Figure la shows the kit before it is inserted into the opening 2a of a housing wall 2 of a transformer system, not shown in the figures.
  • the kit 1 is set up to produce a feed-through arrangement for electrical connection of a transformer system through the opening 2a in a housing wall 2 of the transformer system, wherein FIGS. 1 to 3 show the feed-through arrangement in the assembled state.
  • the kit 1 includes anyway
  • a longitudinally formed electrical conductor 3 wherein along the longitudinal extent of the conductor 3 at least one in the mounted state with respect to the housing wall 2 inside first section 3 'and in the assembled state with respect to the housing wall outboard second section 3 "is formed, and
  • At least one first insulating element 4 which can be inserted into the opening 2a of the housing wall 2 and which has an opening 4a for at least partially receiving the conductor 3, the opening 4a for guiding the conductor 3 from an outer side 2 "of the housing wall 2 towards an inner side 2 'The housing wall 2 is set up.
  • the first section 3 'of the electrical conductor 3 has a widening 3a (see FIG. 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 outer side 2 "of the housing wall 2
  • the second section 3 "of the electrical conductor 3 has a threaded section 3b (see FIG. 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 arranged offset by 90 ° relative to one another along the circumference of the first insulating element 4.
  • the clamping elements 6 are arranged to be separated from one another from the circumference of the at least one first insulating 4 projecting first position (PI) in a zoom on the periphery of the at least one first insulating 4 zoom down zoomed second position (P2, see Figure lb) can be brought.
  • the clamping elements 6 are arranged on the at least one first insulating element 4 in such a way that it limits a displacement of the at least one first insulating element 4 in the direction of the outer side 2 "of the housing wall 2 in the first position (PI) in the installed state of the feedthrough arrangement
  • Clamping elements in the present embodiment for this purpose each have a projection 6a (see also FIGS. 5 and 6) through which a clamping surface 6a 'is designed for clamping on an inner side of the housing wall 2 of the transformer system.
  • Fig. 1b shows how the feed-through arrangement is pushed through the opening 2a.
  • the first insulating member 4 fits positively through the opening 2a, wherein during insertion, the clamping elements 6 in the second position P2 inwardly towards the first insulating 4 in the recess provided for receiving clamping elements 6 4c (see Fig. 4) of the first insulating 4 fold in and so open space for insertion of the feed-through assembly in the opening 2a.
  • the projections 6a of the clamping elements 6 have penetrated through the opening 2a in the inner region 2 'of the transformer Anlange, the clamping elements 6 fold back into the clamping position (PI), as shown in Fig. Lc and ld is illustrated.
  • the lead-through arrangement or kit 1 (the term “kit” does not exclusively refer to the disassembled state within the scope of the teaching of this application but should also comprise the assembled state of the feed-through arrangement) also comprises in the illustrated embodiment a second insulating element 7, which rests on the outer side 2 "of the housing wall 2 and encloses the first insulating element 7 even in the mounted state of the feedthrough arrangement 1a to 1d show a cap 8 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, which are set up in corresponding adjustment recesses 2b of the housing wall 2 engage and thus determine the orientation of the first insulating 4 with respect to the housing wall 2.
  • FIG. 1a shows the implementation arrangement in contrast to the representation according to FIG. 1a to FIG. 1d an outer connection plate 9 for electrical contacting of the conductor 3.
  • Figure 3 shows a representation of the feedthrough assembly of FIG. 2, which has been rotated by 90 ° about its longitudinal axis.
  • a receiving area within the second portion 3 "of the conductor is provided, wherein within the receiving area a mechanical stop 3c (see Figure 3) for determining the orientation and preferably the position of the outer terminal plate 9 with respect to the electrical conductor
  • the mechanical stop 3c in the present exemplary embodiment is designed as a milling in the end region of the conductor 3, wherein the outer connection plate 9 has a corresponding bore through which, for example, a screw can penetrate into the milling Connection plate 9 with the conductor 3, the outer terminal plate 9 also in the present embodiment, two solid screws with which the plate can be clamped on the conductor 3.
  • the widening 3a of the conductor 3 is wedge-shaped and terminates in an inner connection plate 3d, which serves for the inner-side contacting of the conductor 3.
  • the opening 4a is correspondingly formed for this purpose - it thus has a wedge-shaped recess or extension 4a 'for receiving the widening 3a, the orientation of the electrical conductor 3 with respect to the first insulating element 4 being accommodated by receiving the widening 3a in the widening 4a' is fixed.
  • a movement of the conductor 3 outwards through the first insulating element 4 is limited by the contact surface 3a 'formed on the widening 3a resting against a surface corresponding to the extension 4a'.
  • a first sealing ring 10 can be seen, which is arranged between the second insulating element 7 and the outer side 2 "of the housing wall 2 of the transformer installation in the mounted state the side facing away from the housing wall 2 of the transformer system top of the second insulating element 7 is arranged.
  • the second insulating element 7 has an opening 7a which is enclosed by the second sealing ring 11 together with the electrical conductors 3 accommodated therein.
  • the cap 8 also has an opening 8a for the passage of the electrical conductor 3, wherein the cap 8 in the assembled state surrounds the second sealing ring 11, wherein the threaded portion 3b of the electrical conductor 3 at the second portion 3 "of the electrical conductor 3 mounted in the Condition extends above the cap 8 and the cap 8 by means of the nut 5 against the second sealing ring 11 is clamped.
  • the individual components of the feedthrough arrangement or of the kit 1 according to FIGS. 1 to 3 in FIG. 4 are shown in an exploded view.
  • the first insulating element 4 has a substantially cylindrical shape, wherein the respective clamping element 6 in the second position can be accommodated completely within the substantially circular circumference of the first insulating element 4.
  • the electrical conductor 3 is designed substantially rod-shaped and has in the first section 3 'the already mentioned connection plate 3d.
  • the clamping elements 6 are formed plate-shaped, wherein the first insulating member 4 along its circumference each recesses 4c for receiving the clamping elements 6, wherein the clamping element 6 in the mounted state at least partially in the direction of the insulating 4 projecting, on the insulating element 4 supporting tongue 6b to form a respective clamping element 6 in the first position (PI) pressing spring force.
  • the clamping elements 6 also have on their side facing away from the circumference of the insulating 4, the tongue 6b opposite outside the projection 6a, through which the clamping surface 6a 'is designed for clamping on an inner side 2' of the housing wall 2 of the transformer system.
  • FIG. 5 shows a perspective view of a clamping element 6 of the feedthrough arrangement according to FIGS. 1 to 4, and FIG. 6 shows a sectional view of the clamping element 6 according to FIG. 5.
  • the tongue 6b already mentioned is provided on the side of the clamping element 6 opposite the projection 6a. which in the assembled state presses resiliently against the body of the first insulating member 4 and presses the clamping member 6 in the first position (PI).
  • the clamping element 6 has a in the mounted state at least partially protruding in the direction of the first insulating 4 adjusting projection 6c for fixing the position of the clamping element 6 with respect to the first Insulating element 4, wherein the first insulating member 4 has a corresponding recess 4c 'for receiving the Justiervorsprungs 6c.
  • FIGS. 7a and 7b each show a section of the feed-through arrangement according to FIGS. 1 to 6, wherein FIG. 7a shows the clamping elements 6 in a second position (P2) brought to the circumference of the first insulating element 4 and FIG. 7b shows the clamping elements 6 in one of the circumference of FIG first insulating member 4 protruding position (PI) represents.
  • the clamping elements 6 are arranged in such a way that they move from a first position (PI) projecting from the circumference of the first insulating element 4 into a second position (P2) moved to the periphery of the first insulating element 4.
  • the clamping elements 6 are arranged on the first insulating 4, that they in the first position (PI) in the installed state of the feedthrough assembly (shown in Figure ld, Figure 2, Figure 3, and Figure 7b) a shift of the first insulating member 4 in the direction of the outer side 2 "of the housing wall 2 limit, by clamped in the present embodiment, the formed on the projections 6a of the clamping elements 6 clamping surfaces 6a 'against the housing wall 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Bodies (AREA)
  • Insulators (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

L'invention concerne un kit (1) d'un ensemble de traversée destiné au raccordement électrique d'une installation de transformateur par une ouverture (2a) dans une paroi du boîtier (2) de l'installation de transformateur. Selon l'invention, le kit (1) comprend - un conducteur électrique de forme oblongue (3), au moins une première section (3') interne par rapport à la paroi du boîtier (2) à l'état monté et une deuxième section (3") externe par rapport à la paroi de boîtier (2) à l'état monté étant réalisée sur l'extension longitudinale du conducteur (3), et - au moins un premier élément isolant (4) pouvant s'insérer dans l'ouverture (2a) de la paroi du boîtier (2) et présentant une ouverture (4a) pour recevoir au moins partiellement le conducteur (3), l'ouverture (4a) de l'élément isolant (4) étant destinée à guider le conducteur (3) depuis un côté extérieur (2") de la paroi du boîtier (2) vers un côté intérieur (2') de la paroi du boîtier (2) et au moins un premier élément isolant (4) présentant au moins un élément de serrage (6).
EP18723016.4A 2017-06-01 2018-05-15 Kit pour un dispositif de traversée Active EP3631820B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17173963.4A EP3410448A1 (fr) 2017-06-01 2017-06-01 Kit pour un dispositif de traversée
PCT/EP2018/062540 WO2018219637A1 (fr) 2017-06-01 2018-05-15 Kit d'un ensemble de traversée

Publications (2)

Publication Number Publication Date
EP3631820A1 true EP3631820A1 (fr) 2020-04-08
EP3631820B1 EP3631820B1 (fr) 2023-05-24

Family

ID=59030782

Family Applications (2)

Application Number Title Priority Date Filing Date
EP17173963.4A Withdrawn EP3410448A1 (fr) 2017-06-01 2017-06-01 Kit pour un dispositif de traversée
EP18723016.4A Active EP3631820B1 (fr) 2017-06-01 2018-05-15 Kit pour un dispositif de traversée

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP17173963.4A Withdrawn EP3410448A1 (fr) 2017-06-01 2017-06-01 Kit pour un dispositif de traversée

Country Status (2)

Country Link
EP (2) EP3410448A1 (fr)
WO (1) WO2018219637A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3731247B1 (fr) 2019-04-24 2021-11-10 Preis & Co Ges.m.b.H. Ensemble pour un dispositif de passage permettant de connecter électriquement une installation de transformateur
EP4372767A1 (fr) * 2022-11-16 2024-05-22 Preis GmbH Kit pour un dispositif de traversée destiné à la connexion électrique d'une installation de transformateur

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671920A (en) * 1970-10-19 1972-06-20 Sealectro Corp Insulated electric terminal assembly
ITMI20030678A1 (it) 2003-04-07 2004-10-08 Cedaspe S P A Isolatore per trasformatori
JP2009081283A (ja) * 2007-09-26 2009-04-16 Daihen Corp 電気機器用ブッシング
CN203444954U (zh) * 2013-09-02 2014-02-19 丹阳市金诺电器有限公司 一种组合式1kV级变压器套管

Also Published As

Publication number Publication date
EP3631820B1 (fr) 2023-05-24
WO2018219637A1 (fr) 2018-12-06
EP3410448A1 (fr) 2018-12-05

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