EP0447910B1 - Contact femelle - Google Patents

Contact femelle Download PDF

Info

Publication number
EP0447910B1
EP0447910B1 EP91103671A EP91103671A EP0447910B1 EP 0447910 B1 EP0447910 B1 EP 0447910B1 EP 91103671 A EP91103671 A EP 91103671A EP 91103671 A EP91103671 A EP 91103671A EP 0447910 B1 EP0447910 B1 EP 0447910B1
Authority
EP
European Patent Office
Prior art keywords
plug socket
socket according
plug
partial electrodes
electrode
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
EP91103671A
Other languages
German (de)
English (en)
Other versions
EP0447910A3 (en
EP0447910A2 (fr
Inventor
Erwin Dipl.-Ing. Reichl
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.)
Schneider Electric Sachsenwerk GmbH
Original Assignee
Sachsenwerk AG
AEG Sachsenwerk 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 Sachsenwerk AG, AEG Sachsenwerk GmbH filed Critical Sachsenwerk AG
Publication of EP0447910A2 publication Critical patent/EP0447910A2/fr
Publication of EP0447910A3 publication Critical patent/EP0447910A3/de
Application granted granted Critical
Publication of EP0447910B1 publication Critical patent/EP0447910B1/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

Definitions

  • the invention relates to a socket according to the preamble of the first claim.
  • an inner cone recess is formed in an insulating body from one end face, to the bottom of which a hollow bell-shaped plug contact is axially connected.
  • a hat-shaped field control body is connected to this plug contact, which is embedded in the insulating body and extends over the part length of the inner cone recess to open it.
  • fastening fittings which are oriented axially parallel.
  • a current transformer coil is embedded in the insulating body at the opposite end of the plug contact, from which a further ring-shaped field control body extends to the inner cone recess and surrounds the plug contact over a partial length.
  • This further field control body also forms an electrode for displaying a voltage or for voltage measurement via a radially leading measuring line.
  • This arrangement results in an axially elongated structure, in which the electrical breakdown resistance field distortion occurs due to the fastening fittings located in the area of the opening in the inner cone recess.
  • an insulating body penetrates an opening in the wall of a high-voltage device.
  • the insulating body has an end opening of an inner cone recess into which a cable plug can be inserted.
  • a hat-shaped field control body is connected to a plug contact arranged in the inner cone recess, which is embedded in the insulating body and the free edge of which points towards the end face adjacent to the housing wall.
  • Fastening fittings are cast into the insulating body, concentrically to the opening of the inner cone recess, through which the plug socket is screwed to the housing wall or the cable connector with the insertion of a pressure ring.
  • an electrode set back relative to the end face is provided, which is capacitively coupled on the one hand to the field control body and, on the other hand, is connected via an electrical plug connection to electrical measuring devices arranged outside the device housing.
  • the end face of the insulating body is seated gas-tight on the housing wall with the interposition of a seal. Due to the required high voltage dielectric strength, the electrode must be at a considerable distance from the field control body. The consequence of this is that the electrical capacitance value between the electrode and the field control body is very low, and thus the capacitance is very high.
  • the invention has for its object to take measures in a socket according to the preamble of the first claim, by means of which an improvement in the electrical field pattern in the region of the end-side fastening fittings is achieved with an optimal capacitance value of the electrode arrangement.
  • the arrangement of an electrode around the inner cone recess results in a large-area coupling to the plug contact or the associated field control body and thus a substantial increase in the capacitance value.
  • the electrode has a plurality of individual partial electrodes which are arranged in the circumferential direction between adjacent fastening fittings and are electrically connected to one another.
  • the overall electrode profile need not protrude beyond the radial profile specified by the fastening fittings.
  • the partial electrodes are preferably hood-shaped and with the rounded end directed towards the field control body, which is connected to a high-voltage plug-in contact part at the end of the inner cone recess.
  • the rounding of the partial electrodes results in a large area which is executed for the field control body, which increases the capacitance value and also a favorable electrical field distribution.
  • the electrodes are preferably made of sieve or grid-like material, so that an intimate, detachment-free connection occurs with the casting resin used for the production of the insulating body.
  • the connecting line of the individual partial electrodes can run between the fastening fittings and the outer surface of the inner cone recess.
  • the connecting conductor which is preferably in the form of a ribbon cable, can be flattened in the region of fastening fittings and fixed there using small insulation supports on the fastening fitting concerned before it is poured into the casting resin.
  • the connecting line is provided in the area of two partial electrodes with a connecting lug, which is arranged axially with the inner cone recess and points to the end face in a recess open to the end face.
  • the connecting conductor with the partial electrodes attached to it can be held in a correspondingly designed holding device in the casting mold until the casting resin mass solidifies.
  • At least one of the connecting lugs can then be removed from the Cast a plug for connecting a measuring device to be plugged in.
  • a spacer ring is placed on the end face as a counterpart, with the edge of the opening required for the insertion of a cable plug protruding between the end face and the spacer ring.
  • the spacer ring is used for uniform pressure distribution over the circumference of the opening, so that the end face of the socket with an annular seal provided there is pressed gas-tight over the entire circumference to the housing wall in question when the screws are screwed into the associated fastening fittings from the spacer ring.
  • the arrangement of the connecting line and possibly areas of the partial electrodes is preferably such that they lie in the field shadow of a shield, which is inserted into the inner cone recess when a cable connector is inserted.
  • This grounded shield prevents a conductor guided inside the cable connector from being capacitively coupled to the connecting line or adjacent areas of the partial electrodes.
  • the capacitance value desired for the voltage coupling is determined in particular by the geometry between the field control body and the partial electrodes. The high-voltage value detected via the partial electrodes is thus changed only slightly when the cable plug is inserted or removed.
  • a socket 1 of an inner cone plug coupling as is customary for the connection of high-voltage cables in medium-voltage switchgear, has an insulating body 2 made of cast resin, in which an inner cone recess 3 is formed, which is open to an end face 4. At the opposite end, the inner cone recess 3 is followed by an axially identical plug contact part 5, which is to be connected to high-voltage internals in the encapsulated high-voltage device.
  • Fastening fittings 6 and 7 are incorporated into the insulating body 2 from the end face 4 and are axially parallel to the central axis 8 of the inner cone recess. The fastening fittings are located on circular lines concentric to the opening of the inner cone recess, radially outside the inner cone recess.
  • the end face 4 of the socket 1 lies in one plane on a wall 9 of a housing, within which high-voltage switchgear parts are located.
  • this wall 9 is provided with a corresponding opening through which a cable connector 10 can be inserted from the outside.
  • a hat-shaped field control body 11 is also attached to the high-voltage plug contact part 5, which is also embedded in the insulating body 2 and encompasses the adjacent section of the inner cone recess in a ring.
  • an electrode 12 which is electrically insulated from it, is arranged in the region of the end face 4 and is arranged around the inner cone recess 3.
  • this electrically insulated electrode 12 is formed from a plurality of partial electrodes 12.1 which are arranged in the circumferential direction between adjacent fastening fittings 6 and 7, respectively. These partial electrodes 12.1 are electrically connected to one another via a connecting line 13, the electrical connecting line 13 being embedded within the insulating body 2 in the insulating compound.
  • the electrodes 12 and the connecting conductor 13 are preferably made of sieve or grid-like material, so that there is an intimate embedding which prevents the insulating compound from separating from the electrode or the connecting line during the shrinking process during the curing of the casting resin and forming dielectric defects become.
  • the partial electrodes 12.1 can extend in the radial direction over the same area as the fastening fittings and on the other hand largely occupy the space between adjacent fastening fittings 6, 7 and in the axial direction as far as into the insulating body 2 as the fittings 6, 7. This results in an extensive symmetrization of the electrical field, after which the spaces between adjacent fastening electrodes 6, 7 are then provided with electrically conductive parts which, at least approximately like the fastening fittings, are electrically almost at ground potential.
  • the partial electrodes 12.1 are hood-shaped and have the rounded end facing the field control body 11. The rounding contributes to the favorable field distribution and forms a relatively large area compared to the field control body, the one correspondingly high capacity value.
  • the resulting low capacitive resistance value enables the pending high voltage to be detected with relatively simple measuring devices.
  • a connecting lug is attached to the connecting conductor 13, which projects into the space enclosed by the respective partial electrode 12 and is axially aligned is arranged to the inner cone recess in a recess 16 which is open to the end face 4.
  • the connecting lug 15 also points with its free end to the end face 4.
  • the respective terminal lug can be inserted into a holder corresponding to the recess 16, which is located within the casting mold which is used to produce the insulating body 2 with the internals.
  • the connecting line 13 is located in the area that lies between the wall of the inner cone recess 3 and the fastening fittings 6, 7. In the axial direction, the connecting line 13 does not extend beyond the fastening fittings 6, 7.
  • the socket 1 is fixed to the wall 9 with the interposition of a sealing ring 17.
  • a spacer ring 18 is attached from the opposite side of the wall, which engages under the end face 4 with its radially inner part and with the radially outer part Part rests on the wall 9.
  • This spacer ring 18 has an opening 19 which is aligned with the respective connecting lug 15 and merges into a groove 20 which extends radially outward. Through the opening 19, a plug 21 can thus be plugged into the terminal lug 15, from which an electrical line 22 can be guided through the groove 20 to a measuring device, not shown.
  • a flange 23 of the cable connector 10 is seated on the spacer ring 18, a screw being able to be screwed into the associated fastening fitting 7 through the flange 23 and the spacer ring 18 and the wall 9.
  • the socket 1 is fixed on the spacer ring 18 on the wall 9.
  • the cable connector 10 has an electrical shield 24 which is guided in the outer jacket region and is connected to earth potential and extends axially beyond the connecting line 13 into the inner cone recess 3. It thus shields not only the connecting line 13 but also adjacent areas of the partial electrodes 12.1 from a conductor running axially within the cable connector 10.
  • This conductor thus does not have a direct capacitive effect on the connecting line 13 or the relevant area of the partial electrodes 12.1, so that the voltage measured at the partial electrodes 12.1 is largely independent of whether the cable connector 10 is inserted into the socket 1 or not.
  • the capacitive coupling thus takes place even when the cable connector 10 is inserted via the rounded ends of the partial electrodes 12.1 facing the field control body 11.
  • the shielding 24, by virtue of its arrangement with respect to the connecting line 13 and the partial electrodes 12.1, causes the electrical field generated by the cable connector 10 to be largely shaded with respect to the electrode 12.

Landscapes

  • Cable Accessories (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (9)

  1. Contact femelle (1) d'un couplage à fiche intérieurement conique pour câbles dans un appareil à haute tension, en particulier des installations de distribution à haute tension, avec un corps isolant (2) qui présente, sur une face frontale (4), une ouverture d'un évidement intérieurement conique (3) ainsi que, suivant une disposition concentrique par rapport à ce dernier, plusieurs armatures de fixation (6) orientées axialement parallèles radialement à l'extérieur, et avec une électrode enrobée (12.1, 13) pour le couplage de tension capacitif à un raccordement électrique (15) et avec une pièce de contact mâle (5), caractérisé en ce que, dans le sens périphérique des armatures de fixation (6, 7), sont disposées, autour de l'évidement intérieurement conique (3), différentes électrodes partielles (12.1) qui sont reliées électriquement entre elles à l'intérieur du corps isolant (2).
  2. Contact femelle selon la revendication 1, caractérisé en ce que les électrodes partielles (12.1) ont une forme de calotte et leur extrémité arrondie s'écarte de la face frontale (4).
  3. Contact femelle selon la revendication 1 ou 2, caractérisé en ce qu'une ligne de liaison (13) de forme circulaire et aplatie dans la zone radiale d'armatures de fixation (6) relie les électrodes partielles (12.1) entre elles.
  4. Contact femelle selon la revendication 3, caractérisé en ce que la ligne de liaison (13) est reliée, par au moins un isolateur support (14), à au moins une armature de fixation (6).
  5. Contact femelle selon la revendication 1 ou l'une des suivantes, caractérisé en ce que dans la zone d'au moins une électrode partielle (12.1), une barrette (15) est disposée équi-axialement avec l'évidement intérieurement conique (3) et est tournée vers la face frontale (4) dans une cavité (16).
  6. Contact femelle selon la revendication 5, caractérisé en ce que contre la face frontale (4) est placée une bague d'écartement (18) qui présente une perçée (19) alignée avec la barrette (15) et une rainure (20) s'étendant radialement vers l'extérieur.
  7. Contact femelle selon la revendication 1 ou l'une des suivantes, caractérisé en ce que l'électrode (12) respectivement les électrodes partielles (12.1) se composent de matière grillagée ou treillissée.
  8. Contact femelle selon la revendication 1 ou l'une des suivantes, caractérisé en ce que la ligne de liaison (13) s'engage dans la zone qui se trouve entre la paroi de l'évidement intérieurement conique (3) et au moins une armature de fixation (6, 7).
  9. Contact femelle selon la revendication 1 ou l'une des suivantes, caractérisé en ce que la ligne de liaison (13) et éventuellement des zones des électrodes partielles (12.1) se trouvent dans l'ombre de champ du blindage (24) d'un clip de câble inséré (10).
EP91103671A 1990-03-23 1991-03-11 Contact femelle Expired - Lifetime EP0447910B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4009358A DE4009358C2 (de) 1990-03-23 1990-03-23 Steckbuchse
DE4009358 1990-03-23

Publications (3)

Publication Number Publication Date
EP0447910A2 EP0447910A2 (fr) 1991-09-25
EP0447910A3 EP0447910A3 (en) 1992-02-26
EP0447910B1 true EP0447910B1 (fr) 1995-07-05

Family

ID=6402899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103671A Expired - Lifetime EP0447910B1 (fr) 1990-03-23 1991-03-11 Contact femelle

Country Status (5)

Country Link
EP (1) EP0447910B1 (fr)
JP (1) JPH05129047A (fr)
DE (2) DE4009358C2 (fr)
FI (1) FI104348B1 (fr)
NO (1) NO302006B1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110196C2 (de) * 1991-03-28 1995-01-05 Pfisterer Elektrotech Karl Steckerbuchse
DE4235044C2 (de) * 1992-10-17 2002-06-20 Alstom Sachsenwerk Gmbh Steckbuchse
DE4312618A1 (de) * 1993-04-19 1994-10-20 Abb Patent Gmbh Kabelsteckbuchse
DE19737426B4 (de) * 1997-08-21 2005-05-04 Siemens Ag Steckerbuchse für Mittelspannungs-Schaltanlagen
DE19805068A1 (de) * 1998-02-10 1999-08-12 Abb Patent Gmbh Kabelmuffe
US10040962B2 (en) 2013-12-18 2018-08-07 Basf Coatings Gmbh Pigment pastes comprising an aqueous dispersion of a copolymer
DE102014004284B4 (de) * 2014-03-26 2019-11-14 Lapp Insulators Gmbh Hochspannungsdurchführung
DE102016205535A1 (de) * 2016-04-04 2017-10-05 Siemens Aktiengesellschaft Hochspannungsdurchführung
CN109451647B (zh) * 2018-11-01 2020-08-07 中国人民解放军国防科技大学 一种强流二极管锥体陶瓷封装真空界面绝缘结构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2732268C2 (de) * 1977-07-16 1982-06-03 Kabel- Und Lackdrahtfabriken Gmbh, 6800 Mannheim Kabelendverschluß
DE2915369B1 (de) * 1979-04-14 1980-09-18 Pfisterer Elektrotech Karl Garnitur fuer das Ende eines Mittel- oder Hochspannungskabels
DE2943080C2 (de) * 1979-10-25 1982-04-08 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Garnitur für das Ende eines Mittelspannungs- oder Hochspannungskabels
DE3110660C2 (de) * 1981-03-19 1983-07-14 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Garnitur für das Ende eines Mittelspannnungs- oder Hochspannunskabels
DE3247673C2 (de) * 1982-12-23 1986-02-13 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Steckerbuchse mit einem Feldsteuerkörper
DE3445905A1 (de) * 1984-12-15 1986-06-26 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Kupplung
DE3611462A1 (de) * 1986-04-05 1987-10-15 Pfisterer Elektrotech Karl Verbindungsgarnitur fuer leiter eines mittelspannungs- oder hochspannungsnetzes
DE3644890A1 (de) * 1986-04-05 1987-11-12 Pfisterer Elektrotech Karl Verbindungsgarnitur fuer leiter eines mittelspannungs- oder hochspannungsnetzes

Also Published As

Publication number Publication date
NO911169D0 (no) 1991-03-22
FI104348B (fi) 1999-12-31
EP0447910A3 (en) 1992-02-26
DE4009358A1 (de) 1991-09-26
DE59105896D1 (de) 1995-08-10
FI911400A0 (fi) 1991-03-22
EP0447910A2 (fr) 1991-09-25
FI104348B1 (fi) 1999-12-31
FI911400A (fi) 1991-09-24
JPH05129047A (ja) 1993-05-25
NO302006B1 (no) 1998-01-05
NO911169L (no) 1991-09-24
DE4009358C2 (de) 1997-05-15

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