EP0283897B1 - Isolateur de support - Google Patents

Isolateur de support Download PDF

Info

Publication number
EP0283897B1
EP0283897B1 EP88104038A EP88104038A EP0283897B1 EP 0283897 B1 EP0283897 B1 EP 0283897B1 EP 88104038 A EP88104038 A EP 88104038A EP 88104038 A EP88104038 A EP 88104038A EP 0283897 B1 EP0283897 B1 EP 0283897B1
Authority
EP
European Patent Office
Prior art keywords
post insulator
insulator
insulator according
foot part
equipment
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
EP88104038A
Other languages
German (de)
English (en)
Other versions
EP0283897A2 (fr
EP0283897A3 (en
Inventor
Dieter Dipl.-Ing. Fenske
Gottfried Dipl.-Ing. Leonhardt
Adolf Kurz
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.)
Suedkabel GmbH
Original Assignee
ABB Kabel und Draht 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 ABB Kabel und Draht GmbH filed Critical ABB Kabel und Draht GmbH
Priority to AT88104038T priority Critical patent/ATE90810T1/de
Publication of EP0283897A2 publication Critical patent/EP0283897A2/fr
Publication of EP0283897A3 publication Critical patent/EP0283897A3/de
Application granted granted Critical
Publication of EP0283897B1 publication Critical patent/EP0283897B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01B17/30—Sealing
    • H01B17/301—Sealing of insulators to support

Definitions

  • the invention relates to a post insulator, in particular for pluggable connection to transformers and encapsulated switchgear, with a rotationally symmetrical, hollow insulating body for the central reception of the conductor, which has two areas made of different materials which are firmly connected to one another.
  • Such a post insulator is known from the prospectus of the company Elastimold with the title "Transitional Supports Series 200", the post insulator consisting essentially of casting resin from top to bottom and containing a plastic insert made of EPDM in the area of the device bushing.
  • the weakly elastic EPDM insert does not have any expansion space, as is required on the one hand for assembly for bushings with different dimensions with a usual tolerance of a few tenths of a millimeter and on the other hand for reasons of thermal expansion.
  • the invention is therefore based on the object to avoid the disadvantages described and to use a more elastic material that enables a secure seal, regardless of the usual tolerance mentioned above, and in the area of the foot part or the attachment in its elasticity and expansion not by void-free, the elastic material rigidly surrounding support form is hindered.
  • a post insulator of the type mentioned in that the support part or trunk of the post insulator consists of rigid material and its device-side foot part made of elastic material which surrounds the connector part of the device bushing with radial bias dust and waterproof and in the area of the electrical contacting contains a field control electrode integrated all around in the foot part.
  • the foot part normally ends in the area between the top edge of the device feedthrough and the nearest screen of the trunk. If the support insulator should not have any screens or plates, it applies accordingly that the elastic foot part ends a little above the device bushing and merges into the rigid part.
  • the interface between rigid and elastic material should run approximately perpendicular to the field lines, which generally results in an angle ⁇ of 30 to 60 ° to the isolator axis.
  • the circumferential interface can also have a curved profile instead of a straight one.
  • the foot part including the integrated field control electrode, is preferably made of silicone rubber and the remaining part of the post insulator is made of cast resin.
  • a shoulder that runs all around in the area of the rigid part with an elevation or edge is highly recommended. This can be done by holding devices that can be fastened on the device bushing overlapped and pressed in the direction of the device bushing for fastening. At least two opposing organs or claws are necessary, better three.
  • a complete circumferential retaining ring with the above-mentioned edge overlapping molding is used, which consists of two half-shells. In the area of the joints to be connected, these have form-fitting connecting members and are preferably designed as a sliding fold that can be actuated in the axial direction.
  • an all-round retaining ring If an all-round retaining ring is used, it should be at a sufficient distance from the insulating body with respect to its inner diameter so that cavities are present for a certain necessary expansion volume of the foot part. As a rule, a distance of approx. 1 mm is sufficient.
  • FIG. 1 shows the vertical mounting of a post insulator with the actual support part 10 consisting of rigid material, in particular cast resin, to which plates or screens 14 are molded in the case shown.
  • the cast-on foot part 11 made of elastic silicone rubber adjoins at the bottom.
  • the boundary surface 12 and thus the upper end of the foot part 11 is arranged in the region which lies between the upper edge of the connecting part 22 of the device bushing 20 and the lowermost screen 14.
  • the post insulator has a continuous conductor pin 15, preferably made of copper, with an upper power connection thread 15c, a tapered plug contact part 15a for receiving in a corresponding blind hole in the device bushing 20 and with a support edge 15b which is important for assembly and which leads onto the connection upper edge 24 of the connection part 22 the device bushing 20 comes to rest after assembly.
  • the field control electrode 16 is shaped in such a way that it covers the electrically critical area from the point at which the conductor bolt 15 emerges from the insulator to over the edge of the connection part 22 of the device bushing 20 and thus homogenizes the electrical field. It is also advantageous to pull the elastic material on the outer surface of the rigid part 10 above the interface 12 up to approximately the circumferential fastening shoulder or its outer edge 18. The same applies to the outer conductive layer 17, which extends all around the entire height of the elastic foot part 11.
  • the vertical assembly as shown in Figure 1, is particularly common. However, it is also possible, for example, to mount it horizontally. Then, however, it is advisable to use a retaining ring 30 which surrounds the entire foot part 11 in a cylindrical manner and to provide this with a circumferential fastening flange 32 which is attached to the bushing several times by means of the usual fastening members 34, 35, 36 is attached.
  • An expansion gap 19 should be provided between the foot part 11 and the retaining ring 30 in order to be able to take up space required due to thermal expansion or dimensional tolerances.
  • the procedure for assembly is as follows: First, the post insulator including plug contact 15a is applied to the connecting part 22 of the device bushing 20. The two half-shells of the retaining ring 30 are then placed around the elastic foot part 11 from two sides. In the case of the preferably used sliding fold in the axial direction, a free space of approximately 10 to 15 mm is necessary in order to bring the two half-shells, which were initially joined together with an axial displacement, into their flush locking position. This must be taken into account with regard to the distance to the lowest screen 14. The molding 31 of the retaining ring now engages over the outer circumferential edge 18 of the rigid support part 10. Now the fastening members are connected to one another.
  • the lock nuts 36 are pressed along the threaded rods 34 suspended in the fastening lugs 26 onto the fastening flange 32 of the metal retaining ring 30 until the contact edge 15b of the conductor bolt 15 rests on the upper connection edge 24 of the device bushing 20.
  • the lower edge of the retaining ring 30 and that of the elastic foot part then lie almost without play on the flange of the device bushing 20.
  • the retaining ring with all-round mounting flange 32 is a preferred embodiment. It is also possible to form individual fastening lugs on the retaining ring 30 instead of the fastening flange, as shown in the left part of FIG. 1. In the left part of the figure, as an alternative to the cast-in fastening lugs 26, cast-in threaded bushes with screwed-in threaded rods are shown. Finally, instead of a circumferential retaining ring 30, individual claws can also be used, which engage in the outer circumferential fastening edge 18 of the circumferential shoulder.
  • FIG. 2 shows a detail that fully corresponds to the embodiment according to FIG. 1
  • an embodiment variant is shown in the case of FIG.
  • a connection ring 38 is embedded all around, which has holding elements on the outside for fastening the support insulator, preferably a thread 39 - as shown.
  • the retaining ring 40 has a corresponding internal thread at its upper end and can otherwise be designed essentially as the part 30 shown in FIG. 1 and described there. The use of half-shells is omitted here. Instead, the post insulator 10 is screwed into the part 40 designed as a closed ring.
  • an all-round further field control electrode 37 is shown in FIG. It serves to compensate for the electrical field in the area of the edges 38a of the integrated connection ring 38.
  • a correspondingly rotating field control electrode can be recommended in the area of the edge 31 (cf. FIG. 2).

Landscapes

  • Insulators (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (13)

  1. Isolateur rigide, notamment pour la connexion à des transformateurs et des installations de distribution blindées, comportant un corps (10, 11) isolant creux, symétrique de rotation, qui reçoit le conducteur (15) en son centre, lequel corps (10, 11) isolant comporte deux parties qui sont réalisées en des matériaux différents et sont liées rigidement entre elles, caractérisé par le fait que la partie support ou le fût (10) de l'isolateur est réalisé en un matériau rigide et sa base (11), côté appareil, est en matériau élastique, entoure de manière étanche à la poussière et à l'eau, avec précontrainte radiale, la partie de branchement (22) de l'entrée (20) de l'appareil et comporte, dans la région des contacts électriques, une électrode (16) de contrôle de champ annulaire, intégrée dans la base (11) côté intérieur.
  2. Isolateur rigide selon la revendication 1, caractérisé par le fait que la base (11) se termine dans la zone située entre le bord (24) supérieur de la partie de branchement de l'entrée (20) de l'appareil et l'ailette (14) du fût (10) la plus proche de l'appareil.
  3. Isolateur rigide selon la revendication 1 ou 2, caractérisé par le fait que la surface de séparation (12) entre les matériaux rigide et élastique est sensiblement perpendiculaire aux lignes de champ, et forme de préférence un angle α compris entre 30 et 60° avec l'axe de l'isolateur.
  4. Isolateur rigide selon l'une des revendications précédentes, caractérisé par le fait que la base (11) est en caoutchouc silicone.
  5. Isolateur rigide selon la revendication 4, caractérisé par le fait que la partie support ou le fût (10) est constitué essentiellement de résine moulée et que la base (11) en caoutchouc silicone est moulée sur celui-ci sans cavités.
  6. Isolateur rigide selon la revendication 5, caractérisé par le fait que l'électrode (16) de contrôle de champ est réalisée en caoutchouc silicone élastique, conducteur.
  7. Isolateur rigide selon l'une des revendications précédentes, caractérisé par le fait que la base (11) présente un revêtement (17) extérieur conducteur destiné à rendre homogène le champ électrique.
  8. Isolateur rigide selon l'une des revendications précédentes, caractérisé par le fait que la hauteur axiale de la partie de section plus forte de la base (11), dimensionnée pour permettre le raccordement aux entrées d'appareil courantes, est telle que le bord d'appui (15b) de la tige (15) conductrice vient en contact avec le bord supérieur (24) et est maintenu de manière permanente dans cette position lorsqu'une certaine pression est exercée sur la base (11) élastique, dans la direction de la connexion de l'appareil, au moyen des éléments de fixation (34, 35, 36).
  9. Isolateur rigide selon l'une des revendications précédentes, caractérisé par le fait que, au voisinage de la surface de séparation (12), la partie support ou le fût (10) du corps isolant comporte un épaulement annulaire avec un rebord (18) circulaire extérieur qui est saisi par des éléments de retenue fixés côté entrée d'appareil et peut être pressé en direction de l'entrée d'appareil (20).
  10. Isolateur rigide selon l'une des revendications précédentes, caractérisé par une bague de retenue (30), de préférence métallique, qui est fixée côté entrée de l'appareil, est formée de deux coquilles qui s'encliquètent l'une dans l'autre par déplacement axial et présente une partie (31) qui saisit le bord (18) circulaire de la partie support (10).
  11. Isolateur rigide selon l'une des revendications précédentes, caractérisé par une bague de raccordement (38) qui est noyée dans la partie support ou le fût (10) du corps isolant, au voisinage de la surface de séparation (12), et comporte des éléments de retenue destinée à la fixation de l'isolateur rigide.
  12. Isolateur rigide selon la revendication 11, caractérisé par le fait que la bague de raccordement (38) métallique présente une surface extérieue en saillie pourvue d'un filetage (39).
  13. Isolateur rigide selon une des revendications 9 à 12, caractérisé par le fait qu'une électrode (37) de contrôle de champ annulaire supplémentaire est noyée dans la partie support ou le fût (10) au voisinage des bords (18, 38a) métalliques.
EP88104038A 1987-03-26 1988-03-15 Isolateur de support Expired - Lifetime EP0283897B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88104038T ATE90810T1 (de) 1987-03-26 1988-03-15 Stuetzisolator.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3709947 1987-03-26
DE19873709947 DE3709947A1 (de) 1987-03-26 1987-03-26 Stuetzisolator

Publications (3)

Publication Number Publication Date
EP0283897A2 EP0283897A2 (fr) 1988-09-28
EP0283897A3 EP0283897A3 (en) 1990-10-24
EP0283897B1 true EP0283897B1 (fr) 1993-06-16

Family

ID=6324026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104038A Expired - Lifetime EP0283897B1 (fr) 1987-03-26 1988-03-15 Isolateur de support

Country Status (3)

Country Link
EP (1) EP0283897B1 (fr)
AT (1) ATE90810T1 (fr)
DE (2) DE3709947A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2013254A1 (fr) * 1990-03-13 1991-09-13 William R. Rueth, Jr. Traversee haute tension exterieure
DE10037328A1 (de) * 1999-09-21 2001-05-17 Kg Ritz Messwandler G M B H & Stromwandler
RU2172034C1 (ru) * 2000-04-17 2001-08-10 Российское акционерное общество энергетики и электрификации "Единая энергетическая система России" Стержневой опорный изолятор
AU782978B2 (en) * 2000-08-16 2005-09-15 Wamco Pacific Pty. Ltd. Electrical insulator
MX2013014497A (es) 2011-06-09 2014-02-27 Abb Technology Ag Elemento de refuerzo para una brida de fijacion de un alojamiento de aislante cilindrico hueco.
CN104332308B (zh) * 2012-03-31 2017-06-20 指明集团有限公司 工序较少的电力电容器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630470A (en) * 1948-02-17 1953-03-03 Cornell Dubilier Electric Capacitator terminal bushing with auxiliary sealing ring
US2868866A (en) * 1955-08-04 1959-01-13 Raytheon Mfg Co Lead-in bushings
US3278883A (en) * 1965-03-17 1966-10-11 Gen Electric Combined gasket and grounding device for bushings

Also Published As

Publication number Publication date
EP0283897A2 (fr) 1988-09-28
EP0283897A3 (en) 1990-10-24
DE3709947A1 (de) 1988-10-06
DE3881731D1 (de) 1993-07-22
ATE90810T1 (de) 1993-07-15

Similar Documents

Publication Publication Date Title
EP1269594B1 (fr) Tete de cable
DE69731480T2 (de) Vertikale kriechstromfeste schirme
DE3608391C2 (fr)
DE4306143A1 (de) Kraftfahrzeug-Türverschluß mit elektrischen Bauteilen
DE1258491B (de) Elektrische Durchfuehrung mit Befestigungsflansch
EP0193784A2 (fr) Dispositif de raccordement pour une machine à haute tension
EP0283897B1 (fr) Isolateur de support
EP0400491B1 (fr) Dispositif d'alimentation en courant d'un dispositf d'indication pour indiquer la tension du réseau d'une installation de distribution à moyenne tension
EP0447910B1 (fr) Contact femelle
DE4008421C2 (de) Durchführung
DD250806A5 (de) Hochspannungsstromwandler und verfahren zur herstellung eines derartigen hochspannungsstromwandlers
EP1283564B1 (fr) Elément d'accouplement pour un câble électrique blindé et procédé pour sa mise en place sur un câble
DE4008328C2 (fr)
DE2910349C2 (fr)
DE8704487U1 (de) Stützisolator für Steck- oder Schraubtechnik
EP2047484A1 (fr) Element de raccordement a monter sur un boitier de securite
DE69803896T2 (de) Verfahren zum Verbinden von elektrischen Kabeln mit elektrischen Geräten, insbesondere mit Kraftfahrzeuganlasser
EP0572692A1 (fr) Douille de connexion
DE2453004A1 (de) Muffe
DE102022201270B3 (de) Steuerelektrode
DE4039340C2 (de) Stützisolator für gasisolierte Schaltanlagen
DE3511297A1 (de) Vorgefertigte garnitur
DE3619789C1 (en) Connecting device which can be connected to a bolt
EP3400603B1 (fr) Ensemble enroulement muni d'une traversée de type enfichable
DE19753366B4 (de) Klemmenanschlussstück für den zugriffsgeschützten Anschluss eines in einem Gehäuse einer isoliergasgefüllten elektrischen Schaltanlage, insbesondere einer Mittelspannungsschaltanlage, angeordneten Wandlers

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE FR IT LI NL SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ABB KABEL UND DRAHT GMBH

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE FR IT LI NL SE

17P Request for examination filed

Effective date: 19910307

17Q First examination report despatched

Effective date: 19921104

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR IT LI NL SE

REF Corresponds to:

Ref document number: 90810

Country of ref document: AT

Date of ref document: 19930715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3881731

Country of ref document: DE

Date of ref document: 19930722

ITF It: translation for a ep patent filed
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 88104038.0

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960130

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19960131

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19970316

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971128

EUG Se: european patent has lapsed

Ref document number: 88104038.0

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19990216

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001001

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20001001

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20010209

Year of fee payment: 14

Ref country code: AT

Payment date: 20010209

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20011129

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020315

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050315