EP0510019B1 - Connecteur de cables - Google Patents

Connecteur de cables Download PDF

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Publication number
EP0510019B1
EP0510019B1 EP91901313A EP91901313A EP0510019B1 EP 0510019 B1 EP0510019 B1 EP 0510019B1 EP 91901313 A EP91901313 A EP 91901313A EP 91901313 A EP91901313 A EP 91901313A EP 0510019 B1 EP0510019 B1 EP 0510019B1
Authority
EP
European Patent Office
Prior art keywords
cable
sockets
socket
surge arrester
connector according
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
EP91901313A
Other languages
German (de)
English (en)
Other versions
EP0510019A1 (fr
Inventor
Norbert Mikli
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.)
Tyco Electronics Raychem GmbH
Original Assignee
Tyco Electronics Raychem GmbH
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 Tyco Electronics Raychem GmbH filed Critical Tyco Electronics Raychem GmbH
Publication of EP0510019A1 publication Critical patent/EP0510019A1/fr
Application granted granted Critical
Publication of EP0510019B1 publication Critical patent/EP0510019B1/fr
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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors

Definitions

  • This invention relates to a cable connector, and in particular to a connector for interconnecting a high voltage electric power cable with high voltage apparatus, such as a transformer or switchgear.
  • high voltage is meant a voltage in excess of 1kV, and may typically be in the range 10kV to 36kV.
  • Cable connectors suitable for this purpose are disclosed in EP-A-0225190 and EP-A-0139483 the entire contents of which are included herein by this reference.
  • EP-A-0225190 a cable connection arrangement in which an end of the cable is fully terminated and the connector is arranged to receive the terminated cable as a push-fit therein. A terminal then secures a conductive lug of the terminated cable to a contact member retained within the insulating body of the connector.
  • the connector of EP-A-0139483 in addition to having the electrical contact member completely contained within the insulating body, receives the cable end, which need not be completely terminated, within a passageway that is heat-recoverable.
  • a high voltage cable connector comprising an electrically insulating and substantially non-tracking body having four sockets extending thereinto; wherein a first of the sockets is arranged to receive a bushing of high voltage electrical apparatus, a second of the sockets is arranged to recieve a plug, a third of the sockets is arranged to receive one end of a high voltage electric power cable, and a fourth of the sockets is arranged to receive a surge arrester; wherein the third and fourth sockets open into one another whereby the one end of the cable and one end of the surge arrester can be electrically connected together; within the insulating body and wherein the third and fourth sockets open into the second socket thereby in the absence of the plug to allow access through the second socket to said one ends of the cable and surge arrester for connection to each other and, in operation, to a terminal of the bushing of the electrical apparatus.
  • surge arresters or surge diverters
  • surge arresters are normally non-conductive, but their rating is selected for a given high voltage system such that on occurrence of a voltage above a given value they become conductive and safely conduct fault current to earth before any damage is done to the system. The surge arrester then returns to its non-conductive state.
  • the operative component of a surge arrester may comprise a nonlinear resistor arrangement formed from a plurality, that its to say two or more, of metal oxide, for example zinc oxide, varistor blocks stacked end-to-end, having a plate or other conductive member at each end to form a pair of electrodes.
  • the resistor and electrode arrangement is mounted within and retained by a housing, which may be formed from a non-tracking insulating polymeric material or from porcelain.
  • 'non-tracking' material is meant a material that is resistant to the formation of carbonaceous paths therealong, and that satisfies the requirements of the ASTM D 2303 Inclined Plane test.
  • the outer surface of the surge arrester may be convoluted and/or may of shedded configuration for enhanced electrical performance, particularly in adverse environmental conditions of salt, acids and humidity.
  • the present invention thus provides overvoltage protection for a high voltage system in a particularly convenient manner by combining the features of cable connector and surge arrester in a single compact unit.
  • the insulating body of the connector contains a electric contact means that is arranged in operation, that is to say when a cable and a surge arrester are mounted in the connector and the connector is mounted on the electrical apparatus, to provide electrical connection between, on the one hand, the terminal of the bushing of the apparatus and, on the other hand, the said one end of the cable and of the surge arrester.
  • the contact means may comprise a first elongate portion, which may be a pin or a socket, that extends into the first socket, a second elongate portion that extends into the second socket, and an intermediate portion that is mechanically retained by the insulating body of the connector.
  • the first and second elongate portions extend freely into their respective sockets, i.e.
  • the surge arrester and cable when fitted to the connector preferably extend sealingly through their respective sockets in the insulating body and are connected to the second portion of the electrical contact member within the second socket.
  • the plug is advantageously sealingly fitted into the second socket, and may receive, and mechanically support, the free end of the second portion of the contact member.
  • the plug may be provided with a capacitive test point, accessible from outside the connector when the plug is mounted therein, for determination of voltage applied to the contact member.
  • a particularly compact configuration of connector can be obtained when the first and second sockets are substantially axially aligned with one another, and the third and fourth sockets extend transversely thereof substantially in the same plane and to the same side of the first and second sockets.
  • the distance between the bushing of the electrical apparatus and the plug can thus be minimised whilst not only allowing for connection of the cable but also allowing for the presence of the surge arrester.
  • Such a configuration is particularly useful when the connector, and particularly three adjacent connectors of a three-phase system, need to be mounted within a cabinet which either needs to be as small as possible or is an existing cabinet that was not originally designed for a system incorporating a surge arrester.
  • the fitting of the cable into the connector may be as disclosed in EP-A-0225190 or as in EP-A-0139483.
  • one end of the electric cable extends sealingly into the insulating body through the third socket, an outer insulating jacket of the cable has been removed to expose an electrical screen of the cable, the screen has been removed to expose primary insulation of the cable, and the primary insulation has been removed to expose a conductor of the cable, and the cable is terminated by electrical stress control material that extends over the exposed end of the screen and along at least part of the exposed primary insulation, and by electrical insualtion material that extends in close conformity over the cable screen and over the stress control material.
  • the sockets may be arranged to receive the associated component as a push fit therein.
  • one or more of the sockets, and in particular the third and/or fourth socket may be recoverable, preferably by the application of heat thereto, in order to achieve sealing conformity with the associated component.
  • An example of heat sealing a cable into a connector is shown in EP-A-0139483.
  • the entire surge arrester apart from its earthing terminal may be enclosed within the fourth socket, it is envisaged that the body of the surge arrester may remain outside the connector and that a terminal extending from one end will be introduced through the fourth socket to make the required electrical connection.
  • the connector has an insulating non-tracking body 2 of plastics material, such as EPDM.
  • the body 2 has a first socket 4 that is of inwardly tapering and frusto-conical configuration.
  • a second socket 6 of the body 2 has the same configuration and is axially aligned with the socket 4.
  • a third socket 8, of circular section leads into the connector body 2 perpendicularly to the sockets 4 and 6 and opens into the second socket 6.
  • a fourth socket 10, of circular section also leads into the connector body 2 perpendicularly to the first and second sockets 4 and 6, in the same plane and extending in the same general direction as the socket 8.
  • An annular metal contact disc 12 for example of brass or copper, is retained in a recess of the insulating body 2 at the junction of the first and second sockets 4, 6 and threadedly receives a conductive contact pin 14 therein such that a first portion 16 of the pin extends axially into the first socket 4 and a second portion 18 of the pin extends into the second socket 6.
  • a 15kV cable 20 that has been completely terminated and that has an outer sleeve 22 of heat-recoverable insulating, non-tracking polymeric tubing thereon and a metal connecting lug 24 (see also Figure 2) at the end thereof is sealingly inserted as a push-fit into the socket 8 so as to dispose the lug 24 around the contact pin 14 adjacent the contact-disc 12.
  • the lug 24 is then secured in position by means of a nut 25 and a spring washer, access to do this being obtained via the socket 6.
  • a surge arrester 26 has an insulating, non-tracking housing 28, and is terminated at one end by an insulated rod 30 having a connecting lug 32 (see also Figure 2) at the free end thereof, and at the other end by an earthing stud 35.
  • the rod 30 is sealingly inserted as a push-fit into the socket 10 so as to dispose the lug 32 around the contact pin 14 adjacent the cable locking nut 25.
  • the lug 32 is then secured in position by a further nut 34 and a spring washer.
  • a back plug 36 of insulating plastics material is then sealingly inserted as a push-fit into the socket 6.
  • the plug 36 has a metal insert 38 that slidably receives the free end of the second portion 18 of the contact pin 14.
  • the connector body 2 is mounted on electrical apparatus (not shown) such as a transformer or switchgear by having an insulating bushing 40 of the apparatus sealingly inserted as a push-fit into the socket 4. This action causes the first portion 16 of the contact pin 14 to engage with a conductive terminal 42 of the electrical apparatus that extends through the bushing 40.
  • electrical apparatus not shown
  • electrical apparatus such as a transformer or switchgear

Claims (10)

  1. Connecteur de câble à haute tension comprenant un corps électriquement isolant et ne formant sensiblement aucun trajet conducteur, ce corps comportant quatre douilles qui pénètrent en lui, une première des douilles étant conçue pour loger un manchon d'un appareil électrique sous haute tension, une deuxième des douilles étant conçue pour loger un bouchon, une troisième des douilles étant conçue pour loger une extrémité d'un câble de transport d'énergie électrique sous haute tension et une quatrième des douilles étant conçue pour loger un système de protection contre les surtensions, les troisième et quatrième douilles s'ouvrant l'une sur l'autre de façon qu'une extrémité du câble et une extrémité du système de protection contre les surtensions puissent être connectées électriquement l'une à l'autre à l'intérieur du corps isolant et les troisième et quatrième douilles s'ouvrant dans la deuxième douille de manière à permettre, en l'absence du bouchon, l'accès par la deuxième douille auxdites extrémités du câble et du système de protection contre les surtensions pour permettre de les connecter l'une à l'autre et, en fonctionnement, à une borne du manchon de l'appareil électrique.
  2. Connecteur selon la revendication 1, comportant un moyen de contact électrique monté dans son corps isolant, le moyen de contact étant conçu de manière qu'il établisse en fonctionnement le contact électrique avec la borne du manchon de l'appareil électrique et avec ladite une extrémité du câble et celle du système de protection contre les surtensions.
  3. Connecteur selon la revendication 2, dans lequel le moyen de contact électrique comporte une première partie allongée qui pénètre librement dans la première douille, une seconde partie allongée qui pénètre librement dans la deuxième douille et une partie intermédiaire qui est retenue mécaniquement par le corps isolant du connecteur.
  4. Connecteur selon la revendication 2 ou la revendication 3, comportant un système de protection contre les surtensions, une extrémité du système de protection contre les surtensions pénétrant de manière étanche dans le corps isolant par la quatrième douille et étant connectée au moyen de contact électrique.
  5. Connecteur selon l'une quelconque des revendications 2 à 4, dans lequel une extrémité du câble électrique pénètre de manière étanche dans le corps isolant par la troisième douille et est connectée au moyen de contact électrique.
  6. Connecteur selon l'une quelconque des revendications 2 à 5, comportant un bouchon qui est introduit de manière étanche dans la deuxième douille et qui loge une extrémité du moyen de contact électrique.
  7. Connecteur selon l'une quelconque des revendications précédentes, dans lequel les première et deuxième douilles sont sensiblement alignées axialement l'une sur l'autre et dans lequel les troisième et quatrième douilles sont disposées perpendiculairement aux précédentes et sont sensiblement dans le même plan.
  8. Connecteur selon l'une quelconque des revendications précédentes, dans lequel les troisième et/ou quatrième douilles sont conçues pour loger le câble ou le système de protection contre les surtensions, respectivement, par ajustement par poussée.
  9. Connecteur selon la revendications 8, dans lequel une extrémité d'un câble électrique pénètre de manière étanche dans le corps isolant par la troisième douille, dans lequel une gaine isolante extérieure du câble a été enlevée pour mettre à découvert un blindage électrique du câble, le blindage a été enlevé pour mettre à découvert la première isolation du câble et la première isolation a été enlevée pour mettre à découvert un conducteur du câble et dans lequel le câble est terminé par une matière de commande de la contrainte électrique qui est disposée sur l'extrémité à découvert du blindage et le long d'au moins une partie de la première isolation mise à découvert ainsi que par une matière d'isolation électrique qui est placée sur le blindage du câble en épousant étroitement sa forme et sur la matière de commande de la contrainte et dans lequel la troisième douille est conçue pour loger la terminaison du câble par ajustement par poussée.
  10. Connecteur selon l'une quelconque des revendications 1 à 7, dans lequel les troisième et/ou quatrième douilles sont douées de reprise de forme, de préférence à chaud, sur le câble ou sur le système de protection contre les surtensions, respectivement.
EP91901313A 1990-01-09 1990-12-21 Connecteur de cables Expired - Lifetime EP0510019B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9000488 1990-01-09
GB909000488A GB9000488D0 (en) 1990-01-09 1990-01-09 Cable connector
PCT/GB1990/002002 WO1991011040A1 (fr) 1990-01-09 1990-12-21 Connecteur de cables

Publications (2)

Publication Number Publication Date
EP0510019A1 EP0510019A1 (fr) 1992-10-28
EP0510019B1 true EP0510019B1 (fr) 1995-08-30

Family

ID=10669036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91901313A Expired - Lifetime EP0510019B1 (fr) 1990-01-09 1990-12-21 Connecteur de cables

Country Status (10)

Country Link
EP (1) EP0510019B1 (fr)
AT (1) ATE127284T1 (fr)
AU (1) AU7036791A (fr)
DE (1) DE69022071T2 (fr)
ES (1) ES2087992T3 (fr)
GB (1) GB9000488D0 (fr)
IL (1) IL96905A (fr)
MY (1) MY107812A (fr)
NO (1) NO306362B1 (fr)
WO (1) WO1991011040A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7593207B2 (en) 2003-01-22 2009-09-22 Abb Technology Ag Gas-insulated switchgear assembly or component of a gas-insulated switchgear assembly having an outdoor bushing
WO2014108213A1 (fr) 2013-01-14 2014-07-17 Tyco Electronics Raychem Gmbh Jonctions de câbles débranchables avec trois prises

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0652608A1 (fr) * 1993-11-05 1995-05-10 Siemens Schweiz AG Dispositif pour joindre et connecter des conducteurs électriques
DE9404393U1 (de) * 1994-03-16 1994-05-11 Felten & Guilleaume Energie Überspannungsableiterstecker
DE4408818C1 (de) * 1994-03-16 1995-05-04 Felten & Guilleaume Energie Überspannungsableiter-Anordnung an einem Kabelstecker
DE9404392U1 (de) * 1994-03-16 1994-05-11 Felten & Guilleaume Energie Überspannungsableiter-Kabelsteckteil-Verbindung
DE19845776A1 (de) * 1998-09-22 2000-03-23 Siemens Ag T-förmige Verbindungsanschlüsse für gasisolierte Mittelspannungsschaltanlagen
EP2876734B1 (fr) * 2013-11-21 2018-02-28 Tyco Electronics Raychem GmbH Ensemble de connecteur
EP2876735B1 (fr) * 2013-11-21 2019-08-07 Tyco Electronics Raychem GmbH Connecteur pour application de moyenne et basse tension
DE102014221795A1 (de) 2014-10-27 2016-04-28 Bayerische Motoren Werke Aktiengesellschaft Steckverbinder mit verbessertem Hochspannungsschutz
CN105048129A (zh) * 2015-08-17 2015-11-11 广东安迪普科技有限公司 一种屏蔽后斜双插头

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4352139A (en) * 1980-02-04 1982-09-28 Rte Corporation Flexible connector for H.V. arrester
GB8325402D0 (en) * 1983-09-22 1983-10-26 Raychem Gmbh Electrical apparatus
US4638284A (en) * 1984-12-05 1987-01-20 General Electric Corp. Tubular varistor arrangement
GB8529454D0 (en) * 1985-11-29 1986-01-08 Raychem Gmbh Cable connection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7593207B2 (en) 2003-01-22 2009-09-22 Abb Technology Ag Gas-insulated switchgear assembly or component of a gas-insulated switchgear assembly having an outdoor bushing
WO2014108213A1 (fr) 2013-01-14 2014-07-17 Tyco Electronics Raychem Gmbh Jonctions de câbles débranchables avec trois prises
US9537247B2 (en) 2013-01-14 2017-01-03 Tyco Electronics Raychem Gmbh Detachable cable joint with three sockets

Also Published As

Publication number Publication date
GB9000488D0 (en) 1990-03-07
NO922689D0 (no) 1992-07-08
EP0510019A1 (fr) 1992-10-28
NO306362B1 (no) 1999-10-25
DE69022071D1 (de) 1995-10-05
IL96905A (en) 1994-07-31
AU7036791A (en) 1991-08-05
WO1991011040A1 (fr) 1991-07-25
ATE127284T1 (de) 1995-09-15
DE69022071T2 (de) 1996-01-18
ES2087992T3 (es) 1996-08-01
IL96905A0 (en) 1992-03-29
MY107812A (en) 1996-06-29
NO922689L (no) 1992-07-08

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