FR2574216A1 - Screening electrode for transformer step switch - Google Patents

Screening electrode for transformer step switch Download PDF

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Publication number
FR2574216A1
FR2574216A1 FR8508948A FR8508948A FR2574216A1 FR 2574216 A1 FR2574216 A1 FR 2574216A1 FR 8508948 A FR8508948 A FR 8508948A FR 8508948 A FR8508948 A FR 8508948A FR 2574216 A1 FR2574216 A1 FR 2574216A1
Authority
FR
France
Prior art keywords
tube
electrode
foam
ring
protective
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.)
Granted
Application number
FR8508948A
Other languages
French (fr)
Other versions
FR2574216B1 (en
Inventor
Alexander Bleibtreu
Dieter Dohnal
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.)
Maschinenfabrik Reinhausen GmbH
Original Assignee
Maschinenfabrik Reinhausen 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 Maschinenfabrik Reinhausen GmbH filed Critical Maschinenfabrik Reinhausen GmbH
Publication of FR2574216A1 publication Critical patent/FR2574216A1/en
Application granted granted Critical
Publication of FR2574216B1 publication Critical patent/FR2574216B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/48—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

An oil-immersed screening electrode for step switches of step transformers is in the form of a closed ring, esp. of non-circular form. The ring is made from a circular-section, conducting tube wrapped in paper. The tube is a corrugated tube, made from several layers of wrapped aluminium foil and is filled with a multi-component hardening foam or plastics rigid foam.

Description

" Electrode de protection pour commutateur de prises de
transformateurs d prises."
L'invention concerne une électrode de protection immerge dans l'huile pour commutateur de prises de transformateurs à prises, électrode réalisée sous la forme d'un anneau fermé, cet anneau étant essentiellement constitué d'un tube conducteur de section transversale ronde enveloppé de papier."Protective electrode for socket switch
socket transformers. "
The invention relates to an oil immersed protective electrode for tap switches of taped transformers, an electrode produced in the form of a closed ring, this ring essentially consisting of a conductive tube of round cross section wrapped in paper. .

De telles électrodes de protection sont habituellement fabriquées sous la forme d'anneaux de protection en tube d'acier. Par exemple deux demi-coquil- les embouties sont soudées ensemble pour constituer un anneau de protection. Dans ce cas, on doit, pour obtenir une surface lisse, ébarber ensuite le cordon de sou- dure. Il est également nécessaire que le cordon de soudure soit étanche à l'huile afin qu'aucun échange d'air et d'huile ne puisse s1effectuer dans l'anneau de protection. A un procédé de réalisation cofteux en soi, vient ainsi s'ajouter un contrôle d'étanchéité.Le procédé de réalisation est encore plus cofteux lorsque l'anneau de protection s'écarte de la forme circulaire et doit par exemple avoir une forme ovale ou bien le contour externe d'un huit , comme cela peut 8trie le cas pour les anneaux de protection contrôlant le potentiel dans les commutateurs de prises. Un tel anneau de protection devrait Outre composé de morceaux individuels de tubes en forme d'arc et de morceaux de tubes rectilignes. Un autre inconvénient des anneaux de protection fabriqués en acier ou en tubes d'acier est leur poids important. Such protective electrodes are usually manufactured in the form of protective rings made of steel tube. For example two half-shells, the stamped parts are welded together to form a protective ring. In this case, to obtain a smooth surface, then trim the weld seam. It is also necessary that the weld bead is oil tight so that no exchange of air and oil can take place in the protective ring. In addition to a costly production process, there is a tightness control. The production process is even more costly when the protective ring deviates from the circular shape and must for example have an oval shape or well the outer contour of an eight, as can be the case for the protection rings checking the potential in the tap switches. Such a protective ring should additionally consist of individual pieces of arcuate tubes and pieces of straight tubes. Another disadvantage of protective rings made of steel or steel tubes is their high weight.

Le but de l'invention est de créer une électrode de protection du type initialement mentionné, qui pour un poids réduit soit facile à réaliser, notamment aussi dans le cas de formes annulaires s'écartant de la forme circulaire. Ce but est atteint, conformément à l'invention en ce que le tube est un tube ondulé b rainures, obtenu par enroulement d'une feuille dlalumi- nium plusieurs fois plissée longitudinalement, et en ce que ce tube est rempli d'une mousse durcie d'une matière plastique composite (mousse dure de matière plastique). The object of the invention is to create a protection electrode of the type initially mentioned, which for a reduced weight is easy to produce, in particular also in the case of annular shapes deviating from the circular shape. This object is achieved, in accordance with the invention in that the tube is a corrugated tube with grooves, obtained by winding an aluminum foil several times pleated longitudinally, and in that this tube is filled with hardened foam. a composite plastic material (hard plastic foam).

Les avantages obtenus grtce à l'invention sont notamment les suivants t l'électrode de protection peut titre fabriquée facilement. Les tubes ondulés connus dans la technique de aération et de la climatisation peuvent être utilisés à cet effet. L'électrode de protection présente une stabilité de forme suffisante pour un poids estrêmement réduit. Aucun échange d'air et d'huile ne peut s'effectuer. Nême la réalisation de forme s'écartant de la forme circulaire est extr8mement simple : le tube métallique flexible est coupé en longueur et adapté au contour souhaité à l'aide d'un gabarit.Les deux extrémités sont assemblées au moyen d'une tale d'acier à ressorts courbée en forme de tube et se détendant et qui est introduite dans les deux extrémités du tube. Le point de jonction est enveloppé avec une bande de feuille le d'aluminium. Aux emplacements se situant dans l'ombre du champ, sont mis en place des éléments de support et de raccordement. Le tube est ensuite rempli par des orifices appropriés d'une mousse de matière plastique composite et après durcissement de cette mousse, il est encore recuit dans le gabarit, ce qui permet d'obtenir une bonne stabilité de forme. Enfin, l'électrode de protection est en outre enveloppée de papier de la fa çon habituelle. Il est également possible de remplir le tube d'une masse coulée avant la jonction des extrémités, cette masse étant expansée après la jonction. The advantages obtained by virtue of the invention are in particular the following: the protection electrode can easily be manufactured. Corrugated tubes known in the ventilation and air conditioning technique can be used for this purpose. The protective electrode has sufficient shape stability for an extremely reduced weight. No air and oil exchange can take place. Even the realization of a form deviating from the circular form is extremely simple: the flexible metal tube is cut in length and adapted to the desired contour using a template. The two ends are assembled by means of a tale d 'steel tube bent into a tube shape and relaxes and which is introduced into both ends of the tube. The junction point is wrapped with a strip of aluminum foil. At the locations in the shadow of the field, support and connection elements are installed. The tube is then filled by suitable orifices with a composite plastic foam and after this foam has hardened, it is further annealed in the template, which allows good shape stability to be obtained. Finally, the protective electrode is further wrapped in paper in the usual way. It is also possible to fill the tube with a cast mass before the ends are joined, this mass being expanded after the joint.

Un exemple de réalisation de l'invention est représenté sur les dessins ci-joints dans lesquels :
- la figure 1 est une sue en plan de l'électrode de protection selon l'invention,
- la figure 2 est une section transversale à plus grande échelle de l'électrode de protection.An exemplary embodiment of the invention is shown in the accompanying drawings in which:
FIG. 1 is a plan view of the protection electrode according to the invention,
- Figure 2 is a cross section on a larger scale of the protective electrode.

Selon la figure 1 l'électrode de protection a été amenée i la forme souhaitée, non circulaire, à l'aide d'un gabarit. Les deux extrémités du tube sont assemblées au point de jonction 1 et sont maintenues ensemble par une tôle d'acier à ressort 2, en forme de tube disposée à l'intérieur et qui s'applique sur la paroi interne des extrémités du tube. Le tube ondulé qui est en soi tout à fait instable, est, pour obtenir une stabilité suffisante, rempli avec une mousse dure 3 (figure 2). I)ans ce remplissage en mousse dure sont ancrés les éléments 4 de maintien et de raccordement, ces éléments étant bien entendus disposés de façon qu'ils se trouvent dans les ombres du champ,  According to Figure 1 the protective electrode has been brought to the desired shape, not circular, using a template. The two ends of the tube are assembled at the junction point 1 and are held together by a sheet of spring steel 2, in the form of a tube placed inside and which is applied to the internal wall of the ends of the tube. The corrugated tube which is in itself quite unstable, is, to obtain sufficient stability, filled with hard foam 3 (Figure 2). I) in this hard foam filling, the elements 4 for holding and connecting are anchored, these elements being of course arranged so that they are in the shadows of the field,

Claims (1)

REVENI?ICATIO  RETURN TO ICATIO Electrode de protection immergée dans l'huile pour commutateur de prises de transformateurs à prises, électrode réalisée sous la forme d'un anneau fermé, cet anneau étant essentiellement constitué d'un tube conducteur de section transversale ronde enveloppé de papier, électrode caractérisée en ce que le tube est un tube ondulé à rainures, obtenu par enroulement d'une feuille d'aluminium plusieurs fois plissée longitudinalement, et en ce que ce tube est rempli d'une mousse 3) durcie d'une matière plastique composite (mousse dure de matière plastique).  Protective electrode immersed in oil for tap-changer of taped transformers, electrode produced in the form of a closed ring, this ring essentially consisting of a conductive tube of round cross section wrapped in paper, electrode characterized in that the tube is a corrugated tube with grooves, obtained by winding an aluminum sheet several times pleated longitudinally, and in that this tube is filled with a foam 3) hardened with a composite plastic material (hard foam of plastic material).
FR8508948A 1984-08-08 1985-06-13 PROTECTION ELECTRODE FOR SOCKET SWITCHES OF SOCKET TRANSFORMERS Expired FR2574216B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843429209 DE3429209A1 (en) 1984-08-08 1984-08-08 Screening electrode for tap changes of tapped transformers

Publications (2)

Publication Number Publication Date
FR2574216A1 true FR2574216A1 (en) 1986-06-06
FR2574216B1 FR2574216B1 (en) 1988-02-12

Family

ID=6242616

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8508948A Expired FR2574216B1 (en) 1984-08-08 1985-06-13 PROTECTION ELECTRODE FOR SOCKET SWITCHES OF SOCKET TRANSFORMERS

Country Status (5)

Country Link
JP (1) JPS6148911A (en)
AT (1) AT392369B (en)
DE (1) DE3429209A1 (en)
FR (1) FR2574216B1 (en)
SE (1) SE458647B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016203106A1 (en) * 2016-02-26 2017-08-31 Siemens Aktiengesellschaft Arrangement for the electrostatic shielding of an electrical system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2602035A (en) * 1949-09-08 1952-07-01 Gen Electric Paper pulp coating of coils
DE1002874B (en) * 1953-07-08 1957-02-21 Licentia Gmbh Spring ring for high-voltage electrical devices
CH343475A (en) * 1954-07-06 1959-12-31 Raupach Friedrich Dr H C Process for the production of capacitively controlled electrical insulating bodies
US3041561A (en) * 1958-07-29 1962-06-26 Raytheon Co Transformers
DE1191903B (en) * 1963-12-10 1965-04-29 Transform Roentgen Matern Veb Shield ring for controlling the edge fields on windings of high-voltage transformers or the like.
FR1426037A (en) * 1964-03-11 1966-01-24 English Electric Co Ltd electrostatic screen for induction devices
DE2037484A1 (en) * 1970-07-29 1972-03-09 Licentia Gmbh Electric flashover screen - coated with cycloaliphatic epoxy resin
FR2284180A1 (en) * 1974-09-03 1976-04-02 Siemens Ag CONTROL ELECTRODE FOR HIGH VOLTAGE EQUIPMENT AND INSTALLATION

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT242249B (en) * 1963-09-19 1965-09-10 Reinhausen Maschf Scheubeck Tubular high voltage shield ring
DE1903583U (en) * 1963-09-19 1964-11-05 Reinhausen Maschf Scheubeck TUBULAR HIGH TENSION SHIELD RING.
JPS5457906U (en) * 1977-09-29 1979-04-21
JPS5949094B2 (en) * 1978-08-17 1984-11-30 石川島播磨重工業株式会社 Straightening tool for static pressure leveler

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2602035A (en) * 1949-09-08 1952-07-01 Gen Electric Paper pulp coating of coils
DE1002874B (en) * 1953-07-08 1957-02-21 Licentia Gmbh Spring ring for high-voltage electrical devices
CH343475A (en) * 1954-07-06 1959-12-31 Raupach Friedrich Dr H C Process for the production of capacitively controlled electrical insulating bodies
US3041561A (en) * 1958-07-29 1962-06-26 Raytheon Co Transformers
DE1191903B (en) * 1963-12-10 1965-04-29 Transform Roentgen Matern Veb Shield ring for controlling the edge fields on windings of high-voltage transformers or the like.
FR1426037A (en) * 1964-03-11 1966-01-24 English Electric Co Ltd electrostatic screen for induction devices
DE2037484A1 (en) * 1970-07-29 1972-03-09 Licentia Gmbh Electric flashover screen - coated with cycloaliphatic epoxy resin
FR2284180A1 (en) * 1974-09-03 1976-04-02 Siemens Ag CONTROL ELECTRODE FOR HIGH VOLTAGE EQUIPMENT AND INSTALLATION

Also Published As

Publication number Publication date
AT392369B (en) 1991-03-25
DE3429209C2 (en) 1992-06-25
SE8503550L (en) 1986-02-09
ATA226885A (en) 1990-08-15
JPS6148911A (en) 1986-03-10
DE3429209A1 (en) 1986-02-20
SE8503550D0 (en) 1985-07-22
JPH0587004B2 (en) 1993-12-15
FR2574216B1 (en) 1988-02-12
SE458647B (en) 1989-04-17

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