EP0061608A1 - Transformateur ou inductance du type à sec refroidi par air - Google Patents

Transformateur ou inductance du type à sec refroidi par air Download PDF

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Publication number
EP0061608A1
EP0061608A1 EP82101788A EP82101788A EP0061608A1 EP 0061608 A1 EP0061608 A1 EP 0061608A1 EP 82101788 A EP82101788 A EP 82101788A EP 82101788 A EP82101788 A EP 82101788A EP 0061608 A1 EP0061608 A1 EP 0061608A1
Authority
EP
European Patent Office
Prior art keywords
winding
screen
core
transformer
air
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.)
Withdrawn
Application number
EP82101788A
Other languages
German (de)
English (en)
Inventor
Jacobus F.H. Van Der Vegt
Petrus F. Den Hartog
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.)
Smit Transformatoren BV
Original Assignee
Smit Transformatoren BV
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 Smit Transformatoren BV filed Critical Smit Transformatoren BV
Publication of EP0061608A1 publication Critical patent/EP0061608A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01F27/02—Casings
    • H01F27/022—Encapsulation
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/327—Encapsulating or impregnating
    • 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
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/327—Encapsulating or impregnating
    • H01F2027/328—Dry-type transformer with encapsulated foil winding, e.g. windings coaxially arranged on core legs with spacers for cooling and with three phases

Definitions

  • network transformers which have a high-voltage and a low-voltage winding.
  • the windings are usually wound from copper wire and cast in casting resin under vacuum.
  • Axially arranged air channels allow the cooling air to rise from the bottom to the top and ensure sufficient cooling of the windings of the known dry-type transformers.
  • the cooling channels between high-voltage and low-voltage windings not only have the task of transporting the cooling air, but they also have the task of isolating the windings from one another and from the core.
  • the clear width of the cooling channels is matched to the insulation task; it would easily be possible to dimension the cooling ducts narrower if only air cooling had to be taken into account.
  • the screen When designing and installing the screen, care must be taken to ensure that the screen does not form a winding in itself, but has an interruption in conductivity over its entire height. This can be done, for example, through a narrow slot that extends from top to bottom.
  • the screen is preferably designed such that it has overlapping, mutually insulated side edges in the region of the interruption.
  • FIG. 1 shows a phase section 1 of a dry transformer in a partially sectioned side view, the outer dimensions of which are essentially the same as those of the applicant's known network transformers.
  • the phase part 1 is provided with pulled out connections 2, 3, in which the connection electrodes 4 are protected.
  • the electrodes 4 are electrically connected to the high-voltage winding 5 consisting of individual sections High-voltage winding 5 arranged around the core 6 and embedded in a solidified casting compound 7.
  • an undervoltage winding 8 is also provided around the core 6, which is also cast into a corresponding casting compound 9 in a manner known per se.
  • cooling channels 10 and 11 run axially and circumferentially around the core, namely between the upper and lower voltage winding and between undervoltage winding 8 and core 6. This configuration essentially corresponds to the prior art.
  • an electrically conductive, non-magnetic shield 14 is arranged in the inner jacket of the high-voltage winding of the phase part 1, but a narrow gap (gap 23) is provided in the shield, which extends from top to bottom, so that there is a conductivity interruption extending over the entire height (see FIG. 3).
  • the screen 14 lies firmly against the inside of the casting compound 7, which forms a cylindrical hollow jacket around the high-voltage winding assigned to it.
  • the screen is made from a fine metal wire mesh, this mesh is cast onto the casting compound or cast into it.
  • the metal mesh for example, consists of a fine copper wire with a mesh size of 1 - 2 mm mesh size.
  • the mesh size is not critical, but is primarily determined by predetermined, commercially available materials. Its upper limit is the electrical potential penetration, as is known per se to the person skilled in the art with such shields.
  • FIG. 3 shows an umbrella 14 in isolation. It can be seen that the umbrella 14 is an approximately cylindrical structure with open base sides. The sheath is formed by a fine metal wire mesh. In the exemplary embodiment according to FIG. 3, the jacket edges 20, 21 lie somewhat apart (not overlapping), so that a narrow gap 23 is formed. It can also be seen from FIG. 3 that a potential ring 24, 25 forms the upper and lower end of the screen 4, which is soldered to the fabric material. This potential ring, the contour of which can also be seen in FIG. 2, ensures that the stepping potential at the foot and at the end of the winding is kept as small as possible. For example, it consists of 2 - 3 mm thick round copper wire.
  • the screens 14, 15, 16 are firmly connected on one side to the casting compound, so that no cavities can form on this side which could impair the effect.
  • the built-in screens allow the clear width of the air ducts to be significantly reduced, in some cases up to half, compared to transformers with the same voltage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Transformer Cooling (AREA)
  • Regulation Of General Use Transformers (AREA)
EP82101788A 1981-04-01 1982-03-06 Transformateur ou inductance du type à sec refroidi par air Withdrawn EP0061608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813113139 DE3113139A1 (de) 1981-04-01 1981-04-01 "trockentransformator oder drosselspule mit luftkuehlung"
DE3113139 1981-04-01

Publications (1)

Publication Number Publication Date
EP0061608A1 true EP0061608A1 (fr) 1982-10-06

Family

ID=6129054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101788A Withdrawn EP0061608A1 (fr) 1981-04-01 1982-03-06 Transformateur ou inductance du type à sec refroidi par air

Country Status (3)

Country Link
EP (1) EP0061608A1 (fr)
JP (1) JPS5812313A (fr)
DE (1) DE3113139A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3328375A1 (de) * 1982-08-07 1984-02-09 Mitsubishi Denki K.K., Tokyo Transformator
EP0718856A1 (fr) * 1994-12-21 1996-06-26 Vacuumschmelze Gmbh Composant inductive encapsulé dans une masse coulable
EP2075806A1 (fr) 2007-12-27 2009-07-01 Elettromeccanica di Marnate S.p.A. Transformateur à isolation en résine de type sèche avec enroulements primaires côte à côte isolés
EP2487697A1 (fr) * 2011-02-08 2012-08-15 ABB Technology AG Transformateur de type sec et son procédé de fabrication
EP2216793A3 (fr) * 2009-02-05 2013-10-09 General Electric Company Inducteur à bobine moulée
EP2833378A1 (fr) * 2013-07-31 2015-02-04 ABB Technology AG Transformateur
US20150109090A1 (en) * 2013-10-21 2015-04-23 Hammond Power Solutions, Inc. Electrical transformer with a shielded cast coil assembly
EP1864304B1 (fr) * 2005-04-01 2015-05-20 Siemens Aktiengesellschaft Transformateur pourvu d'un blindage electrique
US9498442B2 (en) 2010-03-05 2016-11-22 Alfa Wassermann S.P.A. Rifaximin powder, process for preparing the same an controlled release compositions containing said rifaximin useful for obtaining a long-lasting effect
EP3125260A1 (fr) * 2015-07-31 2017-02-01 ABB Technology AG Transformateur pour un convertisseur electronique de puissance modulaire
EP3144944A1 (fr) * 2015-09-18 2017-03-22 Siemens Aktiengesellschaft Bobine electrique, transformateur sec dote d'une telle bobine electrique et procede de fabrication d'une bobine electrique
DE102017221593A1 (de) * 2017-11-30 2019-06-06 Siemens Aktiengesellschaft Wicklungsanordnung
US11527934B2 (en) 2018-03-13 2022-12-13 Rolls-Royce Deutschland Ltd & Co Kg Electrical machine with voltage detection circuit

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60159803A (ja) * 1984-01-31 1985-08-21 Dainippon Printing Co Ltd 色分離フイルタおよびその製造方法
DE3613690A1 (de) * 1986-04-23 1987-11-05 Koch & Sterzel Kg Selbsttragende, geschirmte primaerhochspannungseinrichtung und verfahren zu derer herstellung
JP5604864B2 (ja) * 2009-12-24 2014-10-15 富士電機株式会社 樹脂モールドコイル
BRPI1100186B1 (pt) * 2011-02-02 2020-03-31 Siemens Aktiengesellschaft Transformador de distribuição a seco
JP5673252B2 (ja) * 2011-03-16 2015-02-18 富士電機株式会社 樹脂モールドコイル

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR564658A (fr) * 1922-04-05 1924-01-08 Thomson Houston Comp Francaise Perfectionnements apportés aux transformateurs
DE1161643B (de) * 1959-02-03 1964-01-23 Licentia Gmbh Mit einem Niederdruckharz umgossene Hochspannungswicklung
DE1258966B (de) * 1964-04-27 1968-01-18 May & Christe Ges Mit Beschrae Luftgekuehlter Kunststofftransformator
DE1263184B (de) * 1960-12-27 1968-03-14 Transform Roentgen Matern Veb Verfahren zum Umhuellen einer trapezfoermigen Wicklung mit Giessharz
DE1268724B (de) * 1964-11-20 1968-05-22 Liebknecht Transformat Anordnung bei Transformatoren und Messwandlern zur Vermeidung von Gleitentladungen
DE2161823A1 (de) * 1971-12-13 1972-07-06 Matsushita Electric Ind Co Ltd Spulenanordnung für einen Transformator
US3708875A (en) * 1971-09-17 1973-01-09 Westinghouse Electric Corp Methods of constructing electrical inductive apparatus
FR2155913A2 (fr) * 1971-10-08 1973-05-25 Bonnefond Bernard Atel
FR2248595A1 (fr) * 1973-10-23 1975-05-16 Westinghouse Electric Corp
DE2548376A1 (de) * 1975-10-29 1977-05-05 Heibl Gmbh Apparatebau W Abschirmwicklung fuer ringkernuebertrager

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR564658A (fr) * 1922-04-05 1924-01-08 Thomson Houston Comp Francaise Perfectionnements apportés aux transformateurs
DE1161643B (de) * 1959-02-03 1964-01-23 Licentia Gmbh Mit einem Niederdruckharz umgossene Hochspannungswicklung
DE1263184B (de) * 1960-12-27 1968-03-14 Transform Roentgen Matern Veb Verfahren zum Umhuellen einer trapezfoermigen Wicklung mit Giessharz
DE1258966B (de) * 1964-04-27 1968-01-18 May & Christe Ges Mit Beschrae Luftgekuehlter Kunststofftransformator
DE1268724B (de) * 1964-11-20 1968-05-22 Liebknecht Transformat Anordnung bei Transformatoren und Messwandlern zur Vermeidung von Gleitentladungen
US3708875A (en) * 1971-09-17 1973-01-09 Westinghouse Electric Corp Methods of constructing electrical inductive apparatus
FR2155913A2 (fr) * 1971-10-08 1973-05-25 Bonnefond Bernard Atel
DE2161823A1 (de) * 1971-12-13 1972-07-06 Matsushita Electric Ind Co Ltd Spulenanordnung für einen Transformator
FR2248595A1 (fr) * 1973-10-23 1975-05-16 Westinghouse Electric Corp
DE2548376A1 (de) * 1975-10-29 1977-05-05 Heibl Gmbh Apparatebau W Abschirmwicklung fuer ringkernuebertrager

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BULL. SEV/VSE, Band 66, Nr. 4, 22. Februar 1975, *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3328375A1 (de) * 1982-08-07 1984-02-09 Mitsubishi Denki K.K., Tokyo Transformator
EP0718856A1 (fr) * 1994-12-21 1996-06-26 Vacuumschmelze Gmbh Composant inductive encapsulé dans une masse coulable
EP1864304B1 (fr) * 2005-04-01 2015-05-20 Siemens Aktiengesellschaft Transformateur pourvu d'un blindage electrique
EP2075806A1 (fr) 2007-12-27 2009-07-01 Elettromeccanica di Marnate S.p.A. Transformateur à isolation en résine de type sèche avec enroulements primaires côte à côte isolés
EP2216793A3 (fr) * 2009-02-05 2013-10-09 General Electric Company Inducteur à bobine moulée
US9498442B2 (en) 2010-03-05 2016-11-22 Alfa Wassermann S.P.A. Rifaximin powder, process for preparing the same an controlled release compositions containing said rifaximin useful for obtaining a long-lasting effect
WO2012107308A1 (fr) * 2011-02-08 2012-08-16 Abb Technology Ag Transformateur de type sec et procédé de fabrication d'un transformateur de type sec
US9424974B2 (en) 2011-02-08 2016-08-23 Abb Technology Ag Dry-type transformer and method of manufacturing a dry-type transformer
EP2487697A1 (fr) * 2011-02-08 2012-08-15 ABB Technology AG Transformateur de type sec et son procédé de fabrication
EP2833378A1 (fr) * 2013-07-31 2015-02-04 ABB Technology AG Transformateur
US20150109090A1 (en) * 2013-10-21 2015-04-23 Hammond Power Solutions, Inc. Electrical transformer with a shielded cast coil assembly
EP3125260A1 (fr) * 2015-07-31 2017-02-01 ABB Technology AG Transformateur pour un convertisseur electronique de puissance modulaire
EP3144944A1 (fr) * 2015-09-18 2017-03-22 Siemens Aktiengesellschaft Bobine electrique, transformateur sec dote d'une telle bobine electrique et procede de fabrication d'une bobine electrique
CN107039159A (zh) * 2015-09-18 2017-08-11 西门子公司 电绕组、具有电绕组的干式变压器和制造电绕组的方法
DE102017221593A1 (de) * 2017-11-30 2019-06-06 Siemens Aktiengesellschaft Wicklungsanordnung
US11527934B2 (en) 2018-03-13 2022-12-13 Rolls-Royce Deutschland Ltd & Co Kg Electrical machine with voltage detection circuit

Also Published As

Publication number Publication date
JPS5812313A (ja) 1983-01-24
DE3113139A1 (de) 1982-10-21

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

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AK Designated contracting states

Designated state(s): AT BE CH FR GB IT NL SE

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

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18D Application deemed to be withdrawn

Effective date: 19830913

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DEN HARTOG, PETRUS F.

Inventor name: VAN DER VEGT, JACOBUS F.H.