FR2723468A1 - Insulated through connector useful for appts. with metal casing - Google Patents

Insulated through connector useful for appts. with metal casing Download PDF

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Publication number
FR2723468A1
FR2723468A1 FR9409633A FR9409633A FR2723468A1 FR 2723468 A1 FR2723468 A1 FR 2723468A1 FR 9409633 A FR9409633 A FR 9409633A FR 9409633 A FR9409633 A FR 9409633A FR 2723468 A1 FR2723468 A1 FR 2723468A1
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France
Prior art keywords
insulating
bushing
insulated
metal casing
appts
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Granted
Application number
FR9409633A
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French (fr)
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FR2723468B1 (en
Inventor
Edmond Thuries
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Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
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Publication date
Application filed by GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Priority to FR9409633A priority Critical patent/FR2723468B1/en
Publication of FR2723468A1 publication Critical patent/FR2723468A1/en
Application granted granted Critical
Publication of FR2723468B1 publication Critical patent/FR2723468B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings
    • H01F27/04Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/26Lead-in insulators; Lead-through insulators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)

Abstract

The connector has: (a) one section (1) which lies outside the casing, and (b) another (3) inside it, the latter having a thread for an insulator (6) with fins (7).

Description

TRAVERSBB ISOLANTE POUR APPAREILLAGE A ENVELOPPE METALLIQUE
La présente invention concerne une traversée isolante pour un appareil électrique avec enveloppe métallique, dans lequel un réducteur de mesure est disposé autour de la traversée, à l'intérieur de l'appareil.
INSULATING TRABERSBB FOR METAL ENCLOSURE APPARATUS
The present invention relates to an insulating bushing for an electrical appliance with a metal casing, in which a measuring reducer is arranged around the bushing, inside the appliance.

On connaît, et on se référera à la Fig. 1, des traversées isolantes pour appareils électriques à enveloppe métallique, comprenant une partie 1 disposée à l'extérieur de l'enveloppe 2 et une partie 3 qui s'étend à l'intérieur de l'enveloppe. Un tore 4 d'un réducteur de mesure, est engagé dans la partie 3. Le montage du tore oblige à donner à la partie 3 de la traversée un diamètre maximal inférieur ou égal au diamètre intérieur du tore. En particulier, la partie 3 ne peut être munie d'ailettes, de sorte que l'isolement n'est assuré qu'en donnant à la partie 3 une grande longueur, ce qui n'exclut pas des claquages par cheminement d'arc le long de la partie 3. We know, and we will refer to FIG. 1, insulating bushings for electrical appliances with a metallic envelope, comprising a part 1 disposed outside the envelope 2 and a part 3 which extends inside the envelope. A torus 4 of a measuring reducer is engaged in part 3. The mounting of the torus obliges to give part 3 of the crossing a maximum diameter less than or equal to the internal diameter of the torus. In particular, part 3 cannot be provided with fins, so that the isolation is only ensured by giving part 3 a great length, which does not exclude breakdowns by arc routing the along part 3.

Un but de la présente invention est de réaliser une traversée dans laquelle la partie intérieure à l'enveloppe métallique reste de longueur acceptable, tout en assurant un isolement parfait et un montage aisé du tore. An object of the present invention is to provide a crossing in which the interior part of the metal casing remains of acceptable length, while ensuring perfect isolation and easy mounting of the toroid.

La présente invention a pour objet une traversée isolante pour appareillage à enveloppe métallique, comprenant une partie extérieure à l'enveloppe et une partie intérieure à l'enveloppe, caractérisé en ce que la partie intérieure est munie d'un filetage sur lequel est vissée une partie isolante munie d'ailettes. The subject of the present invention is an insulating bushing for apparatus with a metal casing, comprising a part external to the casing and a part internal to the casing, characterized in that the internal part is provided with a thread onto which is screwed a insulating part provided with fins.

De préférence, la partie isolante vissée est réalisée en un matériau isolant tel que la porcelaine, la résine époxy, le silicone et le polyuréthane. Preferably, the screwed insulating part is made of an insulating material such as porcelain, epoxy resin, silicone and polyurethane.

Avantageusement, le vissage de la partie isolante sur la partie filetée de la traversée est facilité par une graisse isolante, telle qu'une graisse silicone. Advantageously, the screwing of the insulating part on the threaded part of the bushing is facilitated by an insulating grease, such as a silicone grease.

L'invention est expliquée à l'aide du dessin annexé dans lequel:
- la figure 1 est une vue schématique en coupe d'une traversée selon l'art antérieur,
- la figure 2 est une vue en coupe d'une traversée selon un mode de réalisation préféré de l'invention.
The invention is explained using the attached drawing in which:
FIG. 1 is a schematic sectional view of a crossing according to the prior art,
- Figure 2 is a sectional view of a crossing according to a preferred embodiment of the invention.

Dans la Fig.l, qui illustre l'art antérieur, la référence 1 désigne la partie extérieure d'une traversée pour un appareil électrique possédant une enveloppe métallique 1. La traversée comprend une partie 3 à l'intérieur de l'enveloppe. Un tore de mesure est engagé 4 est dans la partie intérieure de la traversée. On voit que le montage du tore exige que le diamètre de la partie intérieure 3 de la traversée soit au plus égal au diamètre intérieur du tore. L'isolement n'est assuré qu'en donnant à la partie 3 une grande longueur; malgré cela, le dispositif n'est pas à l'abri d'un claquage qui serait dû à un cheminement de l'arc le long de la partie 3, en particulier en raison de poussière et/ou d'humidité sur le partie 3. In Fig.l, which illustrates the prior art, the reference 1 designates the external part of a bushing for an electrical appliance having a metal casing 1. The bushing comprises a part 3 inside the casing. A measuring toroid is engaged 4 is in the interior part of the crossing. We see that the mounting of the torus requires that the diameter of the inner part 3 of the crossing is at most equal to the inner diameter of the torus. Isolation is only ensured by giving part 3 a great length; despite this, the device is not immune to a breakdown which would be due to a path of the arc along part 3, in particular due to dust and / or humidity on part 3 .

La Fig.2 illustre une traversée selon l'invention. Les éléments communs aux Fig. 1 et 2 ont reçu les mêmes numéros de référence. Fig.2 illustrates a crossing according to the invention. The elements common to Figs. 1 and 2 were given the same reference numbers.

La traversée de l'invention comprend une partie 1 extérieure à l'enveloppe 1 et une partie intérieure 3. Les deux parties sont traversées par un conducteur commun 5. La traversée est par exemple réalisée en un seul bloc de porcelaine; la partie extérieure 1 est munie d'ailettes 1A. The crossing of the invention comprises a part 1 external to the envelope 1 and an internal part 3. The two parts are crossed by a common conductor 5. The crossing is for example made in a single block of porcelain; the outer part 1 is provided with fins 1A.

Selon l'invention, la partie intérieure 3 de la traversée comporte une partie filetée sur laquelle est vissée une pièce isolante 6, en forme de manchon et munie d'un filetage intérieur complémentaire; la pièce 6 comprend des ailettes extérieures 7. La pièce isolante vissée 6 est réalisée en tout matériau isolant et par exemple en porcelaine, en résine époxy, en silicone ou en polyuréthane. According to the invention, the inner part 3 of the bushing has a threaded part on which is insulated an insulating part 6, in the form of a sleeve and provided with a complementary internal thread; the part 6 comprises external fins 7. The screwed insulating part 6 is made of any insulating material and for example porcelain, epoxy resin, silicone or polyurethane.

Le vissage peut être facilité, et l'isolement amélioré, par l'emploi d'une graisse isolante telle qu'une graisse silicone dans le filetage. The screwing can be facilitated, and the insulation improved, by the use of an insulating grease such as a silicone grease in the thread.

Grâce à la disposition de l'invention, le montage du tore 4 est aisé et la distance d'isolement assurée par le filetage et les ailettes extérieures. Thanks to the arrangement of the invention, the mounting of the torus 4 is easy and the isolation distance provided by the thread and the external fins.

L'invention s'applique aux installations à moyenne et haute tension.  The invention applies to medium and high voltage installations.

Claims (3)

REVENDICATIONS 1/ Traversée isolante pour appareillage à enveloppe métallique, comprenant une partie (1) extérieure à l'enveloppe (2) et une partie (3) intérieure à l'enveloppe, caractérisé en ce que la partie intérieure (3) est munie d'un filetage sur lequel est vissée une partie isolante (6) munie d'ailettes (7).1 / Insulating bushing for apparatus with a metallic envelope, comprising a part (1) external to the envelope (2) and a part (3) internal to the envelope, characterized in that the internal part (3) is provided with a thread on which is insulated an insulating part (6) provided with fins (7). 2/ Traversée selon la revendication 1, caractérisée en ce que la partie isolante vissée (6) est réalisée en un matériau isolant tel que la porcelaine, la résine époxy, le silicone et le polyuréthane.2 / bushing according to claim 1, characterized in that the screwed insulating part (6) is made of an insulating material such as porcelain, epoxy resin, silicone and polyurethane. 3/ Traversée selon l'une des revendications 1 et 2, caractérisé en ce que le vissage de la partie isolante (6) sur la partie filetée de la traversée est facilité par une graisse isolante, telle qu'une graisse silicone. 3 / bushing according to one of claims 1 and 2, characterized in that the screwing of the insulating part (6) on the threaded part of the bushing is facilitated by an insulating grease, such as a silicone grease.
FR9409633A 1994-08-03 1994-08-03 INSULATING CROSS-SECTION FOR METAL ENCLOSURE APPARATUS Expired - Fee Related FR2723468B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9409633A FR2723468B1 (en) 1994-08-03 1994-08-03 INSULATING CROSS-SECTION FOR METAL ENCLOSURE APPARATUS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9409633A FR2723468B1 (en) 1994-08-03 1994-08-03 INSULATING CROSS-SECTION FOR METAL ENCLOSURE APPARATUS

Publications (2)

Publication Number Publication Date
FR2723468A1 true FR2723468A1 (en) 1996-02-09
FR2723468B1 FR2723468B1 (en) 1996-09-06

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FR9409633A Expired - Fee Related FR2723468B1 (en) 1994-08-03 1994-08-03 INSULATING CROSS-SECTION FOR METAL ENCLOSURE APPARATUS

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FR (1) FR2723468B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE540922A (en) *
US3462645A (en) * 1967-06-09 1969-08-19 Westinghouse Electric Corp Electrical transformer suitable for pole or vault mounting
US4308420A (en) * 1980-03-13 1981-12-29 Mcgraw-Edison Company Electrical apparatus with convectively cooled bushing connector
SU1744720A1 (en) * 1989-07-24 1992-06-30 Производственное объединение "Нижегородский машиностроительный завод" High-voltage lead

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE540922A (en) *
US3462645A (en) * 1967-06-09 1969-08-19 Westinghouse Electric Corp Electrical transformer suitable for pole or vault mounting
US4308420A (en) * 1980-03-13 1981-12-29 Mcgraw-Edison Company Electrical apparatus with convectively cooled bushing connector
SU1744720A1 (en) * 1989-07-24 1992-06-30 Производственное объединение "Нижегородский машиностроительный завод" High-voltage lead

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 2593, Derwent World Patents Index; Page 003, AN 93-204389 *

Also Published As

Publication number Publication date
FR2723468B1 (en) 1996-09-06

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