EP1146601B1 - Flexible Verbindung für Mittelspannung und Verfahren zur deren Herstellung - Google Patents

Flexible Verbindung für Mittelspannung und Verfahren zur deren Herstellung

Info

Publication number
EP1146601B1
EP1146601B1 EP20010400775 EP01400775A EP1146601B1 EP 1146601 B1 EP1146601 B1 EP 1146601B1 EP 20010400775 EP20010400775 EP 20010400775 EP 01400775 A EP01400775 A EP 01400775A EP 1146601 B1 EP1146601 B1 EP 1146601B1
Authority
EP
European Patent Office
Prior art keywords
flexible tube
conductive core
medium voltage
electrical connector
connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20010400775
Other languages
English (en)
French (fr)
Other versions
EP1146601A2 (de
EP1146601A3 (de
Inventor
Roberto Morlesin
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.)
Nexans SA
Original Assignee
Nexans SA
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
Priority claimed from EP00401045A external-priority patent/EP1146600A1/de
Application filed by Nexans SA filed Critical Nexans SA
Priority to EP20010400775 priority Critical patent/EP1146601B1/de
Publication of EP1146601A2 publication Critical patent/EP1146601A2/de
Publication of EP1146601A3 publication Critical patent/EP1146601A3/de
Application granted granted Critical
Publication of EP1146601B1 publication Critical patent/EP1146601B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing

Definitions

  • the present invention relates to a method to provide a medium voltage interconnection for realizing an electrical connection between a receiving connector of a first equipment station and a receiving connector of a second equipment station.
  • Such an interconnection is generally known in the art. It is made of a metal conductor at the ends of which are mounted electrical connectors.
  • the electrical connector mates with the receiving connector generally forming part of a "bushing" of an equipment station.
  • the equipment station is typically a transformer or switchgear in transformation station and the properties of the connectors are therefore preferably standardized.
  • the electrical connector is moulded in polyethylene material so as to form a massive conductive core enclosed within a screened insulating body.
  • the interconnection is relatively rigid and, additionally, is not available in different relative short lengths, e.g. of about 30 cm.
  • a connector of this kind is described e.g. in FR-2 741 484.
  • This document is directed to an electrical connector for connecting e.g. two cables, and comprising a conductive core including a metal conductor with at each end thereof, an electrical connector. It also comprises an elastic protective sleeve made of a layer of semi-conductive or conductive rubber.
  • This connector is pre-fabricated by moulding a one-piece element.
  • An interconnection adapted to electrically connect a first equipment to a second equipment comprising a conductive core including a conductor made preferably of conducting silicone rubber with, at each end thereof, an electrical terminal adapted to mate the corresponding parts of the equipments to connect, and a flexible sheath having at least an insulating layer made of elastomeric material (synthetic resin such as silicon or synthetic rubber, said flexible sheath covering the whole conductive core, is also know from EP-0 406 509.
  • the method for manufacturing the interconnection of this document is a molding method such that the element and the sheath constitute a single piece.
  • An object of the present invention is to provide an interconnection of the above known type but of which the electrical connectors are relatively more flexible, and available in different lengths without any significant extra-cost.
  • the moulding process is replaced by an extrusion process.
  • the conductive core is composed of a flexible conductor connected to two electrical connectors, whole enclosed within an elastic tube or sleeve to define connection insulated interfaces to mating the receiving connectors of the equipments.
  • flexible interconnections are more adequate due to the flexibility of material and dimensions.
  • the method of the present invention preferably comprises the steps of providing said electrical connector with a substantially conical shape of which the base has a diameter relatively larger than the diameter of said metal conductor, and of connecting said base to an end of said metal conductor.
  • the present method further comprises the step of engaging one end of said flexible tube into an inner side of a conical bushing means made of insulating material and provided with said receiving connector so as to bring the electrical connector of the conductive core into contact with said receiving connector and said insulating layer of said flexible tube into contact with said inner side of said bushing means.
  • said method comprises the steps of providing said flexible tube with, coaxially starting from the center:
  • said method further comprises the steps of:
  • the flexible tube or sleeve is then locked onto the electrical connectors or end-pieces of the conductive core to prevent any relative movement.
  • the grooves may also be used to hold slidable outer clamps to mechanically clamp each electrical connector and possibly to achieve the external screening continuity between the interconnection and the mating parts.
  • the present invention also relates to a medium voltage interconnection obtained by the method of the invention and adapted to electrically connect a receiving connector of a first equipment station and a receiving connector of a second equipment station.
  • This medium voltage interconnection is characterized in that it comprises a conductive core including a metal conductor with, at each end thereof, an electrical connector adapted to mate said receiving connector, and a flexible tube having at least an insulating layer made of elastomeric material and covering the whole conductive core.
  • said elastomeric material is a synthetic terpolymer of ethylene, propylene and diene [EPDM],
  • said elastomeric material is a silicone.
  • the term 'coupled' should not be interpreted as being limitative to direct connections only.
  • the scope of the expression 'a device A coupled to a device B' should not be limited to devices or systems wherein an output of device A is directly connected to an input of device B. It means that there exists a path between an output of A and an input of B which may be a path including other devices or means.
  • the flexible interconnection of the present invention is intended to be used for electrically connecting medium voltage electrical devices located in distinct equipment stations.
  • an electrical device is for instance a switchgear or a transformer operating at voltages above 1 kVolt and enclosed in an equipment station that is a tank or a cubical.
  • the equipment station is filled with an insulated medium that is oil fluid or gas, generally pressurized sulfur hexa-fluoride [SF6].
  • SF6 sulfur hexa-fluoride
  • the bushing well is an insulating molded hollow cone provided with a metallic rod interconnecting a connector at the top of the outer side of the cone with a receiving connector at the inner side of this cone, inside the well.
  • the receiving connector meets the requirements of ANSI/IEEE Standard 386-1977 as is the case of the known bushing "K16O1PCC/K16O1PCC-R Clampable Apparatus Bushing Well with Gasket" of AMERACE TM LTD (10 Esna Park Drive Markham, Ontario, Canada L3R 1E1 /1 November 1983). It is to be noted that bushing wells with other dimensions but still matching the present interconnection may also be used.
  • One side of the bushing is immersed in the insulated medium of the equipment station and electrically connected to the electrical device, whilst the inner side of the cone is in the ambient air and provided with the receiving connector designed to receive one end of the flexible interconnection.
  • the flexible interconnection comprises a conductive core surrounded by a flexible tube that will be explained in detail below.
  • the conductive core is made of a metal flexible conductor 2 provided at each end with an electrical connector, indicated by arrows 3 and 4. Each connector 3/4 is adapted for mating the receiving connector of the bushing.
  • the electrical connector 3/4 has a central blind hole 5/6 for connecting to a respective receiving connector of the bushing and has a conical shape of which the base 7/8 is respectively connected to an end of the metal flexible conductor 2.
  • This base 7/8 has a diameter that is larger than the diameter of the metal conductor 2.
  • the electrical connector 3/4 is further provided with an external locking ring 9/10 mating in an internal ring groove of the flexible tube.
  • the conductive core 1 is covered, protected and insulated by a flexible tube, generally indicated by 11 in the Figs. 2a, 2b and 3, and preferably made of up to three layers of material.
  • the flexible tube 11 is a moulded or extruded tube made of a first semi-conductive layer 12 (at the inside), an insulating layer 13 made of elastomeric material, and a second semi-conductive layer 14 (at the outside).
  • the elastomeric material of the insulating layer 13 is preferably a synthetic terpolymer of ethylene, propylene and diene [EPDM]. Additionally, this EPDM may be recycled and is thus friendly for the environment.
  • the tube 11 preferably has the same length as the conductive core 1.
  • the flexible tube 11 is then prepared for receiving the conductive core 1, as shown at Fig. 3. Therefore, each end of the second semi-conductive layer 14 is removed at a certain distance up to the insulation material 13. At the same time, an internal ring groove 15 is provided at each end in the first semi-conductive layer 12 and partially in the insulating layer 13 of the flexible tube 11. The flexible tube 11 is then radially expanded and the conductive core 1 is slided therein.
  • the flexible tube is released over the conductive core 1 in order to obtain a resulting medium voltage interconnection as shown at Fig. 4.
  • the flexible tube 11 has now taken the shape of the underlying conductive core 1 and the latter is prevented to move therein owing to the mating external locking ring 9/10 of the conductive core and the internal ring groove 15 of the tube.
  • the first semi-conductive layer 12 of the tube is in contact with the metal flexible conductor 2 and the connectors 3/4.
  • each end of the so obtained interconnection may then be engaged into an inner side 16 of a conical bushing, generally indicated by an arrow 17, as described above, and mounted in a hole of a wall 18.
  • the receiving connector 19 of the bushing 17 is so brought into contact with the electrical connector 3 of the conductive core via its hole 5, whilst the insulating layer 13 of the interconnection is brought into contact with the inner side 16 of the bushing.
  • a fixing ring is provided over the conductive core at each end thereof.
  • the fixing ring 20 On the left side of the interconnection, the fixing ring 20 abuts against the base 7 of the conical electrical connector 3 covered by the flexible tube and is mechanically fixed (not shown) to the bushing 17.
  • a metal flexible protection (not shown) can be mounted on the outside of the tube to take the short-circuit currents.
  • the insulating layer of the bushing device may also be a molded elastomeric material, preferably a synthetic terpolymer of ethylene, propylene and diene [EPDM] as for the insulating layer 13 of the flexible tube 11.
  • EPDM ethylene, propylene and diene

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Cable Accessories (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (16)

  1. Verfahren zum Bereitstellen einer Mittelspannungskupplung zur Herstellung einer elektrischen Verbindung zwischen einem aufnehmenden Kontaktstück einer ersten Gerätestation und einem aufnehmenden Kontaktstück einer zweiten Gerätestation, wobei das besagte Verfahren den Schritt des Bereitstellens eines elektrischen Verbinders (3, 4) an jedem Ende eines flexiblen metallischen Leiters (2) umfasst, der mit dem besagten aufnehmenden Kontaktstück (19) zusammenpasst, wobei der besagte metallische Leiter mit seinen zwei Verbindern einen leitenden Kern (1) bildet, dadurch gekennzeichnet, dass das besagte Verfahren folgende Schritte umfasst:
    - Bereitstellen eines flexiblen Schlauchs (11), hergestellt aus wenigstens einer isolierenden Schicht (13) von Elastomer- Material,
    - Radiales Aufweiten des besagten flexiblen Schlauchs und das Einschieben des besagten leitenden Kerns und
    - Freigeben des besagten flexiblen Schlauchs über dem besagten leitenden Kern.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass es weiterhin folgende Schritte umfasst:
    - Bereitstellen des besagten elektrischen Verbinders (3) mit einer im Wesentlichen konischen Form, dessen Basis (7) einen Durchmesser aufweist, der deutlich größer ist als der Durchmesser des besagten metallischen Leiters (2), und
    - Verbinden der besagten Basis mit einem Ende des besagten metallischen Leiters.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das besagte Verfahren weiterhin den Schritt des Ineingriffbringens eines Endes des besagten flexiblen Schlauchs mit der Innenseite (16) eines konischen Buchsenmittels (17), hergestellt aus Isoliermaterial und ausgestattet mit besagtem aufnehmenden Kontaktstück (19), um den elektrischen Verbinder (3) des leitenden Kerns (1) in Kontakt mit dem besagten aufnehmenden Kontaktstück, und die besagte Isolierschicht (13) des besagten flexiblen Schlauchs (11) in Kontakt mit der besagten Innenseite des besagten Buchsenmittels zu bringen.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass es die Schritte umfasst, den flexiblen Schlauch (11) koaxial, beginnend mit dem Zentrum, auszustatten mit:
    - einer ersten halbleitenden Schicht (12),
    - einer Isolierschicht (13), bestehend aus einem Elastomer- Material,
    - einer zweiten halbleitenden Schicht (14).
  5. Verfahren nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass das besagte Verfahren weiterhin den Schritt des teilweisen Entfernens der besagten zweiten halbleitenden Schicht (14) am Ende des besagten flexiblen Schlauchs (11) umfasst vor dem Schritt des Ineingriffbringens des besagten Endes des besagten flexiblen Schlauchs (11) mit dem besagten Buchsenmittel (17).
  6. Verfahren nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass das besagte Verfahren diese Schritte umfasst:
    - Anbringen einer Ringnut in der besagten ersten halbleitenden Schicht (12), und
    - Anbringen einer Ringnut teilweise in der besagten Isolierschicht (13).
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das besagte Verfahren weiterhin folgende Schritte umfasst:
    - Anbringen eines externen Verriegelungsrings (9, 10) auf wenigstens einem elektrischen Verbinder (3, 4) des besagten leitenden Kerns (1), und
    - Anbringen wenigstens einer internen Ringnut (15) in dem besagten flexiblen Schlauch (11) zur Aufnahme des Verriegelungsrings, wenn der Schlauch über dem besagten Kern freigegeben wird.
  8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der besagte flexible Schlauch (11) die gleiche Länge hat wie der leitende Kern (1).
  9. Mittelspannungskupplung, hergestellt nach dem Verfahren eines der Ansprüche 1 bis 8, wobei die besagte Kupplung eingerichtet ist, ein aufnehmendes Kontaktstück einer ersten Gerätestation elektrisch mit einem aufnehmenden Kontaktstück einer zweiten Gerätestation zu verbinden, wobei die besagte Kupplung einen leitenden Kern (1) umfasst einschließlich eines flexiblen metallischen Leiters (2) mit einem elektrischen Verbinder (3, 4) an jedem Ende, der eingerichtet ist, mit dem besagten aufnehmenden Kontaktstück (19) zusammenzupassen; und einen flexiblen Schlauch (11), der wenigstens eine Isolierschicht (13) aufweist, bestehend aus einem Elastomer- Material, wobei der besagte flexible Schlauch aufgeweitet und über dem gesamten leitenden Kern freigegeben wird.
  10. Mittelspannungskupplung nach Anspruch 9, dadurch gekennzeichnet, dass das besagte Elastomer- Material ein synthetisches Terpolymer von Ethylen, Propylen und Dien [EPDM] ist.
  11. Mittelspannungskupplung nach Anspruch 9, dadurch gekennzeichnet, dass das besagte Elastomer- Material ein Silicon ist.
  12. Mittelspannungskupplung nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass der besagte elektrische Verbinder (3) eine im Wesentlichen konische Form aufweist, und dessen Basis (7) mit dem besagten metallischen Leiter (2) verbunden ist, wobei besagte Basis einen Durchmesser aufweist, der deutlich größer ist als der Durchmesser des besagten metallischen Leiters.
  13. Mittelspannungskupplung nach Anspruch 12, dadurch gekennzeichnet, dass ein Ende des besagten flexiblen Schlauchs (11) eingerichtet ist, mit der Innenseite (16) eines konischen Buchsenmittels (17), das aus einem Isoliermaterial hergestellt ist und mit dem besagten aufnehmenden Kontaktstück (19) ausgestattet ist, in Eingriff zu kommen, wobei der elektrische Verbinder (3) des besagten leitenden Kerns (1) eingerichtet ist, in elektrischen Kontakt mit dem besagten aufnehmenden Kontaktstück gebracht zu werden, und dadurch, dass die besagte Isolierschicht (13) des besagten flexiblen Schlauchs eingerichtet ist, mit der besagten Innenseite des besagten Buchsenmittels in Kontakt gebracht zu werden.
  14. Mittelspannungskupplung nach Anspruch 13, dadurch gekennzeichnet, dass die besagte Kupplung mit einem Fixierring (20) versehen ist, der über dem besagten leitenden Kern (1) und über dem besagten flexiblen Schlauch (11) angebracht wird, wobei der besagte Fixierring eingerichtet ist, an der Basis (7) des elektrischen Verbinders (3) anzuliegen und an dem besagten Buchsenmittel (17) befestigt zu werden.
  15. Mittelspannungskupplung nach einem der Ansprüche 9 bis 14, dadurch gekennzeichnet, dass der besagte flexible Schlauch (11) ein mehrlagiger Schlauch ist, bestehend, beginnend beim Zentrum, aus einer ersten halbleitenden Schicht (12), einer Isolierschicht (13), bestehend aus einem Elastomer- Material und einer zweiten halbleitenden Schicht (14).
  16. Mittelspannungskupplung nach einem der Ansprüche 9 bis 15, dadurch gekennzeichnet, dass der elektrische Verbinder (3, 4) des besagten leitenden Kerns (1) mit einem externen Verriegelungsring (9, 10) versehen ist, der mit einer internen Ringnut (15) in der Isolierschicht (13) des besagten flexiblen Schlauchs (11) zusammenpasst.
EP20010400775 2000-04-13 2001-03-26 Flexible Verbindung für Mittelspannung und Verfahren zur deren Herstellung Expired - Lifetime EP1146601B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20010400775 EP1146601B1 (de) 2000-04-13 2001-03-26 Flexible Verbindung für Mittelspannung und Verfahren zur deren Herstellung

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00401045 2000-04-13
EP00401045A EP1146600A1 (de) 2000-04-13 2000-04-13 Flexible Mittelspannungsverbindung und dessen Herstellung
EP20010400775 EP1146601B1 (de) 2000-04-13 2001-03-26 Flexible Verbindung für Mittelspannung und Verfahren zur deren Herstellung

Publications (3)

Publication Number Publication Date
EP1146601A2 EP1146601A2 (de) 2001-10-17
EP1146601A3 EP1146601A3 (de) 2005-04-13
EP1146601B1 true EP1146601B1 (de) 2006-08-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010400775 Expired - Lifetime EP1146601B1 (de) 2000-04-13 2001-03-26 Flexible Verbindung für Mittelspannung und Verfahren zur deren Herstellung

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Country Link
EP (1) EP1146601B1 (de)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708610A (en) * 1971-09-08 1973-01-02 Methode Mfg Corp Non-delaminating bus assembly for electronic systems and method of forming same
US3853375A (en) * 1972-12-15 1974-12-10 Esco Mfg Co Electrical connector apparatus disconnectable link assembly
US3937995A (en) * 1974-12-05 1976-02-10 Palmer Industries Ltd. High voltage grounding strap
US4695926A (en) * 1986-07-01 1987-09-22 Bell Of Pennsylvania Encapsulation and insulation of electronic circuit board structures
IT1233310B (it) * 1989-06-09 1992-03-26 Ubalit S P A Metodo per la realizzazione di unita' conduttrici isolate colleganti elettricamente carichi elettrici con generatori di segnali elettrici e unita' ottenuta con tale metodo
FR2741484B1 (fr) * 1995-11-21 1997-12-19 Silec Liaisons Elec Piece de raccordement electrique
WO1997043698A1 (fr) * 1996-05-15 1997-11-20 Nippon Zeon Co., Ltd. Rouleau expanse semi-conducteur et procede de fabrication associe

Also Published As

Publication number Publication date
EP1146601A2 (de) 2001-10-17
EP1146601A3 (de) 2005-04-13

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