EP0935264B1 - Transformateur d'intensité pour une installation de commutation à isolation gazeuse - Google Patents
Transformateur d'intensité pour une installation de commutation à isolation gazeuse Download PDFInfo
- Publication number
- EP0935264B1 EP0935264B1 EP99400205A EP99400205A EP0935264B1 EP 0935264 B1 EP0935264 B1 EP 0935264B1 EP 99400205 A EP99400205 A EP 99400205A EP 99400205 A EP99400205 A EP 99400205A EP 0935264 B1 EP0935264 B1 EP 0935264B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformer according
- end plates
- closure end
- transformer
- link rods
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
Definitions
- the present invention relates to an intensity transformer for a single-phase or multi-phase switching installation, isolated gas, comprising at least one support tube on which is mounted at minus a secondary winding containing a magnetic core, this tube being crossed by a primary conductor, and electrically connected, to its ends, with two polygonal metal plates, arranged in parallel, constituting closing flanges of an enclosure containing in particular said magnetic core and said secondary winding.
- German utility certificate DE-GM 7914263 describes a transformer of unipolar intensity of this type.
- the core support tube is put in place in suitable recesses in two end plates.
- An insulation ring is associated with a plate to avoid a bond between the two plates through the support tube.
- a tube peripheral cylindrical surrounding the core is disposed between the two plates which are also coupled to each other by means of screws Tightening. The length adjustment of the support tube and the cylindrical tube device allows to realize in a simple way different transformers provided with a variable number of cores having different lengths.
- the outside diameter of the transformer is mandatory greater than that of the largest core, to provide space for the passage of the clamping screws. Since the diameter of the transformer is crucial to assess the size of a multipolar installation, since it defines the distance between the transformers corresponding respectively to each phase, the recommended solution is not advantageous because it does not allow the dimensions to be reduced of the installation.
- EP 0 665 561 A1 The European patent application published under the number EP 0 665 561 A1 describes an intensity transformer with a unipolar annular core whose enclosure metal consists of two molded parts. One of these pieces constitutes a base plate and the other part constitutes the side walls of the metal enclosure and the upper closure plate. The two parts each have a peripheral belt, these belts being arranged to be juxtaposed and partially nested and pressed against each other the other by bolts. The diameter of these belts is greater than core diameter.
- the object of the present invention is to provide a current intensity transformer this simple type of construction, which can be made in several dimensions and, in particular, with magnetic cores of different lengths, and at using components that are easy to manufacture.
- the transformer according to the invention characterized in that that the support tube is gas tight and fits at its ends, sealingly, in suitable recesses in said enclosure closing flanges, one of said ends being connected said corresponding closing flange by an intermediate ring of a insulating material, and said closing flanges being interconnected by rigid connecting rods arranged in the corners of these flanges.
- the flanges of closure are common to several corresponding magnetic cores respectively with several phases and each comprises several recesses arranged for receiving and sealingly accommodating one end a support tube for one of the magnetic cores corresponding to one of the phases.
- said recesses are arranged linearly.
- the connecting rods are electrically connected at their ends with the flanges of closing. This connection is made by screwing with said closing flanges.
- the transformer can also have two connecting rods arranged between two adjacent secondary windings corresponding to two of the installation phases.
- said closure flanges are identical.
- the secondary winding is advantageously made integral with one of said closing flanges by means of at least one tightening strap and said flange has at least one protuberance and an opening in this protuberance to allow the passage of said strap Tightening.
- the connecting rods are of cross section quadrangular and said enclosure has fixed side walls to said connecting rods.
- Said side walls are advantageously fixed to the connecting rods to the screw means, and the screws are arranged asymmetrically with respect to the longitudinal axis of the transformer.
- the transformer includes a connection box containing connection terminals electrically connected to the said secondary windings.
- the single-phase current transformer 10 as shown comprises a support tube 11 carrying at least one, but in this case three annular cores 12, 13 and 14 respectively surrounded by secondary windings 15, 16 and 17. These secondary windings are superimposed and arranged coaxially with respect to the support tube 11. They are tightened against each other by means of a tightening strap 18.
- the support tube 11 as well as the secondary windings 15, 16 and 17 are arranged inside an enclosure 19 defined by two plates of metal constituting respectively a lower closing flange 20 and an upper closing flange 21, and by four side walls formed by metal plates 22, 23, 24 and 25.
- the closing flanges 20 and 21 are interconnected by rods of link 26 arranged at the corners of the closing flanges 20 and 21, which have preferably a polygonal shape and, in this case, a shape square.
- the two closing flanges 20 and 21 are fixed by screwing to the ends of connecting rods 26 and metal plates 22, 23, 24 and 25 are screwed onto the connecting rods 26.
- the lower closing flange 20 has two protrusions 27 and 28, diametrically opposite, and each comprising a through opening, 29 and 30 respectively, allowing the passage of two tightening straps 18, diametrically opposed, provided to maintain the position secondary windings around the support tube 11.
- the tube support 11 is housed at its ends in recesses in the two closing flanges 20 and 21.
- these two flanges are suitably shaped to receive these ends of the support tube.
- Annular seals 37 seal between the support tube 11 and the closing flanges 20, 21.
- the support tube is electrically insulated relative to the lower closing flange 20 by means of a ring 38 insulating and is electrically connected to the upper closing flange 21.
- connection box 32 containing connection terminals is mounted laterally on the transformer 10 and more particularly on the metal plate 23 constituting one of the side walls of the enclosure 19.
- Figure 3 mainly illustrates the juxtaposition of two transformers of intensity 10 such as that defined above.
- these screws are fixed asymmetrically.
- Two screws of a plate, one of which is arranged near its angle upper and the other near its lower opposite corner, are used to fix the plate to the two corresponding connecting rods 26. This this procedure makes it possible to reduce the size of the transformer.
- the lower and upper closing flanges have the same profile, which reduces manufacturing costs and avoids the storage of two different rooms.
- the multiphase intensity transformer 10a has three support tubes 11a, 11b and 11c each carrying at least one, but in this case three annular cores 12a, 12b, 12c; 13a, 13b, 13c; 14a, 14b, 14c respectively surrounded by secondary windings 15a, 15b, 15c; 16a, 16b, 16c; 17a, 17b, 17c.
- These windings are superimposed and arranged coaxially like those of the transformer 10 described above. They are also tightened and held in place by tightening straps 18a.
- the support tubes 11a, 11b and 11c as well as the windings correspondents are arranged inside an enclosure 19a defined by two metal plates respectively constituting a closing flange lower 20a and an upper closing flange 21a and by four walls side formed by metal plates 22a, 23a, 24a and 25a.
- the enclosure 19a is common for the three support tubes and the corresponding secondary windings.
- the closing flanges 20a and 21a have profiled recesses of suitably to receive the ends of the support tubes. These tubes are electrically insulated from the lower closing flange 20a thanks to a ring of an electrically insulating material and electrically connected to the upper closing flange 21a.
- the closing flanges 20a and 21a are interconnected by rods of link 26a arranged at the corners of the form closing flanges rectangular and by intermediate connecting rods 26b, arranged two to two between two adjacent support tubes and the secondary windings correspondents.
- the metal plates 22a, 23a, 24a and 25a constituting the side walls are rectangular in shape and are screwed directly on the connecting rods 26a and 26b.
- the intensity transformer according to the invention makes it possible to group the components corresponding to the different phases so as to reduce clutter.
- the size of the enclosure is barely greater than that of the secondary winding (s).
- the grouping of several phases generates a slightly clutter greater than that generated by the combination of several phases in the same enclosure according to the multiphase embodiment.
- this current transformer is also advantageous from the causes a variation in the dimensions of the support tube, of the core magnetic and secondary windings does not entail additional costs important.
- the construction is easy and results in a robust device.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
- Transformer Cooling (AREA)
- Gas-Insulated Switchgears (AREA)
- Coils Of Transformers For General Uses (AREA)
- Housings And Mounting Of Transformers (AREA)
Description
- la figure 1 représente une vue en perspective éclatée d'un transformateur d'intensité monophasé selon l'invention,
- la figure 2 est une vue en coupe axiale du transformateur d'intensité de la figure 1,
- la figure 3 est une vue en élévation illustrant partiellement une installation comportant au moins deux transformateurs d'intensité correspondant à celui des figures 1 et 2,
- la figure 4 est une vue en perspective, partiellement coupée, d'un transformateur d'intensité multiphasé selon l'invention,
- la figure 5 est une vue de dessus du transformateur d'intensité de la figure 4,
- la figure 6 est une vue en coupe axiale du transformateur d'intensité de la figure 5, et
- la figure 7 est une vue en coupe transversale du transformateur d'intensité de la figure 5.
Claims (12)
- Transformateur (10) d'intensité pour une installation de commutation monophasée ou multiphasée, à isolation gazeuse, comportant au moins un tube de support (11) sur lequel est monté au moins un bobinage secondaire (15;16;17) contenant un noyau magnétique (12;13;14), ce tube étant traversé par un conducteur primaire, et connecté électriquement à ses extrémités, à deux plaques métalliques polygonales, disposées parallèlement, constituant des flasques de fermeture (20;21) d'une enceinte (19) contenant notamment ledit noyau magnétique et ledit bobinage secondaire, le tube de support (11; 11a, 11b, 11c) étant étanche aux gaz et s'emboítant à ses extrémités, de façon étanche, dans des évidements appropriés ménagés dans lesdits flasques de fermeture (20, 20a; 21, 21a) de l'enceinte (19; 19a), l'une des extrémités étant connectée audit flasque de fermeture correspondant (20; 20a) par un anneau intermédiaire (38) d'un matériau isolant caractérisé en ce que lesdits flasques de fermeture sont . reliés entre eux par des tiges de liaison rigides (26; 26a) qui sont disposées dans les angles de ces flasques et qui sont électriquement connectés par leurs extrémités avec lesdits flasques de fermeture (20, 21).
- Transformateur selon la revendication 1, caractérisé en ce que, pour une installation multiphasée, les flasques de fermeture (20a, 21a) sont communs à plusieurs noyaux magnétiques (12a, 12b, 12c; 13a, 13b, 13c; 14a, 14b, 14c) correspondant respectivement à plusieurs phases et comportant chacun plusieurs évidements agencés pour recevoir et loger de façon étanche une extrémité d'un tube de support d'un des noyaux magnétiques correspondant à une des phases.
- Transformateur selon la revendication 2, caractérisé en ce que lesdits évidements sont disposés linéairement.
- Transformateur selon la revendication 1, caractérisé en ce que les tiges de liaison (26) sont liées par vissage avec lesdits flasques de fermeture.
- Transformateur selon la revendication 2, caractérisé en ce qu'il comporte en outre deux tiges de liaison (26b) disposées entre deux bobinages secondaires adjacents correspondant à deux des phases de l'installation.
- Transformateur selon la revendication 1, caractérisé en ce que lesdits flasques de fermeture (20, 20a; 21, 21b) sont identiques.
- Transformateur selon la revendication 1, caractérisé en ce que le bobinage secondaire est rendu solidaire de l'un desdits flasques de fermeture au moyen d'au moins une sangle de serrage (18).
- Transformateur selon la revendication 7, caractérisé en ce que ledit flasque de fermeture (20) comporte au moins une protubérance (27, 28) et une ouverture (29, 30) ménagée dans cette protubérance pour permettre le passage de ladite bande de serrage (18).
- Transformateur selon la revendication 1, caractérisé en ce que les tiges de liaison (26) sont de section transversale quadrangulaire.
- Transformateur selon la revendication 1, caractérisé en ce que ladite enceinte (19) comporte des parois latérales (22, 23, 24, 25) fixées auxdites tiges de liaison (26).
- Transformateur selon la revendication 10, caractérisé en ce que lesdites parois latérales sont fixées aux tiges de liaison (26) au moyen de vis, et en ce que les vis sont disposées de façon asymétrique par rapport à l'axe longitudinal du transformateur (10).
- Transformateur selon la revendication 1, caractérisé en ce qu'il comporte une boíte de connexion (32) contenant des bornes de raccordement électriquement connectées auxdits bobinages secondaires.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9801470A FR2774803B1 (fr) | 1998-02-09 | 1998-02-09 | Transformateur d'intensite pour une installation de commutation a isolation gazeuse |
FR9801470 | 1998-02-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0935264A1 EP0935264A1 (fr) | 1999-08-11 |
EP0935264B1 true EP0935264B1 (fr) | 2004-05-12 |
Family
ID=9522726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99400205A Expired - Lifetime EP0935264B1 (fr) | 1998-02-09 | 1999-01-29 | Transformateur d'intensité pour une installation de commutation à isolation gazeuse |
Country Status (8)
Country | Link |
---|---|
US (1) | US6014072A (fr) |
EP (1) | EP0935264B1 (fr) |
JP (1) | JPH11317319A (fr) |
CN (1) | CN1130737C (fr) |
AT (1) | ATE266897T1 (fr) |
DE (1) | DE69917092T2 (fr) |
ES (1) | ES2221325T3 (fr) |
FR (1) | FR2774803B1 (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6760206B2 (en) | 2001-03-16 | 2004-07-06 | Cooper Industries, Inc. | Current sensor supporting structure |
ATE348429T1 (de) * | 2004-02-27 | 2007-01-15 | Abb Technology Ag | Kompaktes stromwandlergehäuse für gasisolierte schaltanlagen |
FR2874122B1 (fr) | 2004-08-06 | 2006-09-22 | Areva T & D Ag | Transformateur de courant de type triphase et poste electrique equipe d'un tel transformateur de courant |
JP4703316B2 (ja) * | 2005-08-12 | 2011-06-15 | 株式会社東芝 | ガス絶縁変流器 |
JP5243161B2 (ja) * | 2008-09-18 | 2013-07-24 | 日本板硝子株式会社 | 画像読取装置 |
DE102010004971A1 (de) * | 2010-01-18 | 2011-07-21 | Abb Technology Ag | Vorrichtung für eine Schaltanlage |
EP2586045A1 (fr) * | 2010-06-23 | 2013-05-01 | ABB Technology AG | Transformateur de courant |
CA2783433C (fr) * | 2011-07-25 | 2020-12-15 | William Kenneth Mcgrail | Transformateuretsystemedemesure |
US8587399B2 (en) | 2012-02-06 | 2013-11-19 | Continental Control Systems, Llc | Split-core current transformer |
CN103346007A (zh) * | 2013-07-26 | 2013-10-09 | 常州博瑞电力自动化设备有限公司 | 隔离断路器电子式电流互感器 |
FR3016995B1 (fr) * | 2014-01-24 | 2017-10-13 | Alstom Technology Ltd | Montage d'une bride sur un tube pour transformateur |
DE102015210135A1 (de) * | 2015-06-02 | 2016-12-08 | Siemens Aktiengesellschaft | Stromwandler und Schaltanlage mit einem Stromwandler |
EP3182427B1 (fr) * | 2015-12-18 | 2020-05-20 | ABB Schweiz AG | Transformateur de courant pour sous-station de commutation haute tension à isolation gazeuse |
JP6416827B2 (ja) * | 2016-06-23 | 2018-10-31 | ファナック株式会社 | 筒状のコアを備えるリアクトル、モータ駆動装置、およびアンプ装置 |
CN111640571B (zh) * | 2020-06-28 | 2021-09-10 | 江西广能电气设备有限公司 | 一种铁心柱卡头扎带 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1986884A (en) * | 1934-10-11 | 1935-01-08 | Peter W Fassler | Welding transformer |
US2431189A (en) * | 1946-03-28 | 1947-11-18 | Gen Electric | Electromagnetic induction apparatus |
DE1030446B (de) * | 1953-08-24 | 1958-05-22 | Iacoqia Nv | Durchfuehrungsstromwandler fuer Hochspannung |
US4338657A (en) * | 1974-05-21 | 1982-07-06 | Lisin Vladimir N | High-voltage transformer-rectifier device |
CH627023A5 (fr) * | 1978-03-09 | 1981-12-15 | Bbc Brown Boveri & Cie | |
DE3608391A1 (de) * | 1985-11-15 | 1987-09-17 | Messwandler Bau Ag | Hochspannungsstromwandler |
DE4337403A1 (de) * | 1993-10-26 | 1995-04-27 | Siemens Ag | Elektrische Hochspannungsschaltanlage mit einem Ringkernstromwandler |
-
1998
- 1998-02-09 FR FR9801470A patent/FR2774803B1/fr not_active Expired - Lifetime
-
1999
- 1999-01-29 ES ES99400205T patent/ES2221325T3/es not_active Expired - Lifetime
- 1999-01-29 EP EP99400205A patent/EP0935264B1/fr not_active Expired - Lifetime
- 1999-01-29 DE DE69917092T patent/DE69917092T2/de not_active Expired - Lifetime
- 1999-01-29 AT AT99400205T patent/ATE266897T1/de not_active IP Right Cessation
- 1999-02-08 JP JP11029553A patent/JPH11317319A/ja active Pending
- 1999-02-09 CN CN99102153A patent/CN1130737C/zh not_active Expired - Fee Related
- 1999-02-09 US US09/247,068 patent/US6014072A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1227956A (zh) | 1999-09-08 |
DE69917092D1 (de) | 2004-06-17 |
DE69917092T2 (de) | 2005-05-12 |
ATE266897T1 (de) | 2004-05-15 |
US6014072A (en) | 2000-01-11 |
EP0935264A1 (fr) | 1999-08-11 |
CN1130737C (zh) | 2003-12-10 |
FR2774803A1 (fr) | 1999-08-13 |
JPH11317319A (ja) | 1999-11-16 |
FR2774803B1 (fr) | 2001-04-27 |
ES2221325T3 (es) | 2004-12-16 |
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