EP0923784B1 - Hochspannunstrockenspule - Google Patents

Hochspannunstrockenspule Download PDF

Info

Publication number
EP0923784B1
EP0923784B1 EP96930211A EP96930211A EP0923784B1 EP 0923784 B1 EP0923784 B1 EP 0923784B1 EP 96930211 A EP96930211 A EP 96930211A EP 96930211 A EP96930211 A EP 96930211A EP 0923784 B1 EP0923784 B1 EP 0923784B1
Authority
EP
European Patent Office
Prior art keywords
thermoplastic resin
winding
insulating
coating
layer
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
EP96930211A
Other languages
English (en)
French (fr)
Other versions
EP0923784A1 (de
EP0923784B8 (de
Inventor
Sylvain Laureote
Dominique Feldmann
Michel Sacotte
Jacques Wild
Lana Sheer
Albert P. Walrave
Max André MOUNOUD
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.)
Schneider Electric Industries SAS
Original Assignee
Electricite de France SA
Schneider Electric Industries SAS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9488837&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0923784(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Electricite de France SA, Schneider Electric Industries SAS filed Critical Electricite de France SA
Publication of EP0923784A1 publication Critical patent/EP0923784A1/de
Publication of EP0923784B1 publication Critical patent/EP0923784B1/de
Application granted granted Critical
Publication of EP0923784B8 publication Critical patent/EP0923784B8/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01F27/28—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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/127—Encapsulating or impregnating

Definitions

  • the present invention relates to high voltage windings and relates more particularly to windings of this type that can be used as high voltage winding of dry transformer.
  • High voltage windings for such applications must be able to withstand voltage levels between 5 and 36 kV.
  • Solid-insulated transformers or dry-type transformers whose coils are embedded in thermosetting insulating materials and which comprise large air gaps providing an insulation function between windings and between windings and electrical ground, which increases their their bulk, and consequently their cost.
  • Coated transformers and impregnated transformers There are currently two major families of dry transformers. Coated transformers and impregnated transformers. The methods of manufacture of these devices are certainly different, but the insulation materials used have in common to be thermosetting and require a hot polymerization resulting in a high manufacturing cost.
  • the invention aims to overcome the aforementioned drawbacks of dry insulated devices by creating a high voltage winding which while having performance at least as good as those of known dry insulations, or a reduced manufacturing cost and has a improved operational safety.
  • a high voltage winding comprising a coil of coated conductive wire.
  • an insulating sheath characterized in that said winding is embedded in a high-voltage insulating thermoplastic resin, and in that it further comprises an electroconductive surface layer for fixing the potential, made of a thermoplastic resin compatible with the thermoplastic resin of the insulating coating, deposited on this coating.
  • the winding shown in the drawings is a high voltage winding that can be used in particular as the high voltage winding of a dry transformer.
  • the winding 1 is embedded in a high-voltage insulating thermoplastic resin 2.
  • thermoplastic resin used to produce this coating is advantageously polyethylene terephthalate optionally loaded with reinforcing glass fibers.
  • This resin may also be selected from the group consisting of 6-6 polyamides, 6-polyamides, 4,6-polyamides, 12,12 polyamides, 6-12 polyamides, polyamides containing aromatic monomers, terephthalate polybutylene, polyproprylene terephthalate, polyethylene naphthalate, liquid crystalline polymers, polycyclohexane dimethylol terephthalate, copolyetheresters, polyphenylene sulfide, polyacyls, polypropylene, polyethylene, polyacetals, polymethylpentene, polyetherimides, polycarbonates, polysulfones, polyethersulfones, polyphenylene oxides, polystyrene, styrene copolymers, graft mixtures and copolymers of styrene and rubber and mixtures thereof.
  • the thickness of the thermoplastic resin of the insulating coating 2 may be between 3 and 50 mm.
  • an electroconductive surface layer 3 for fixing the potential made of thermoplastic resin compatible with the thermoplastic resin of the insulating coating 2.
  • thermoplastic resin 3 for fixing the potential advantageously contains a carbon charge.
  • the insulating coating 2 comprises a side strip 4 of insulating thermoplastic resin compatible with the insulating material of the coating and may be made of a material identical to that of this coating.
  • This lateral strip is arranged axially in excess thickness with respect to the coating 2. It covers the conductors 5,6 of the winding connection as well as the internal connections of the coil. Around the conductors 5 and 6 there are respective orifices 7,8 made in the insulating coating 2 and the cover strip 4, to allow the ends of the connecting conductors 5,6 to be passed for their connection with other non-conductive components. represented.
  • an additional orifice 10 in which protruding conductors 11 forming intermediate terminals of the winding 1 and can be joined by riders no represented to adapt the winding value to the needs of its use.
  • the side strip 4 of insulating thermoplastic resin is also coated with the electroconductive surface layer 3 for fixing the potential except for the orifices 7,8,10.
  • the orifices 7 and 8 for the passage of the connection conductors of the winding are intended to cooperate with unrepresented insulating elements surrounding for example the ends of connecting bars and to ensure the continuity of both the coating and the electroconductive layer for fixing the potential.
  • the intermediate orifice 10 for access to the conductors 11 for adjusting the value of the coil is advantageously closed by a plug of insulating material (not shown) coated with an electroconductive layer intended to to ensure continuity with the electroconductive layer 3 covering the entire winding.
  • the insulating thermoplastic resin coating 2 surrounds the hollow cylindrical winding 1 as well according to the outer contour as according to the inner contour of this winding.
  • the annular high voltage winding thus produced is particularly suitable for use as a high voltage winding of a dry transformer.
  • Its interior space 12 can receive a low voltage winding mounted on a magnetic circuit column and not shown.
  • the high voltage winding according to the invention constitutes the high voltage winding of a dry transformer.
  • This high-voltage winding 1 is associated with a low voltage winding 15 also with dry insulation mounted on a column 16 of magnetic circuit laminated with the interposition of a sleeve 17.
  • the low voltage winding 15 is embedded in a material 18 for example a thermoplastic resin and which comprises, at its periphery, molded axial ribs 19 which define, coming into contact with the inner surface of the electroconductive resin coating 3 of the high-voltage winding 1, a channel 20 for the circulation of a cooling fluid such as that air.
  • molding is carried out in a first mold not shown in a first coating of the winding 1 in an electrically insulating thermoplastic resin of sufficient thickness so that the winding is isolated from the electricity with respect to the outside.
  • a second mold is then molded in a second coating of the coil provided with its electrically insulating thermoplastic resin layer 2 with a layer 3 of electroconductive thermoplastic resin for fixing the potential.
  • the coil 1 is placed in the cavity of the aforementioned mold provided with an inlet, a vent orifice and support rods for an object in the mold.
  • the support rods are moved so that they come into contact with the winding 1 in order to support it in the cavity of the mold.
  • the resin is preheated in a chamber provided with an injection screw to a temperature at which the resin becomes fluid.
  • thermoplastic insulating resin is injected with high pressure electricity into the relatively cold mold through its inlet.
  • the high pressure can be applied by hydraulic or pneumatic means.
  • the injection pressure of the resin may be from 35 to 138 MPa and the temperature from about 200 to about 400 ° C.
  • the support rods are then retracted from the mold cavity when the thermoplastic resin is injected into the cavity and before it takes up around the rods to prevent the formation of voids in the electrically insulating thermoplastic resin.
  • vent orifice may in fact be formed of several holes in the region of the junction of the radial surface and the axial surfaces of the mold.
  • the first mold is made so that the molten resin enters the mold through a circumferential inlet formed in the inner surface of the mold.
  • the insulating thermoplastic resin is still electrically charged until the mold is filled to form an electrically insulating thermoplastic resin layer 2 substantially free of voids and of sufficient thickness so that the coil is isolated from the outside.
  • the injection of the electrically insulating thermoplastic resin is continued until a uniform thickness of insulating coating of at least 3 mm is obtained on the inner and outer diameters of the winding 1 and that a uniform thickness of insulating coating of at least 2.5 mm is obtained at the axial ends of the winding.
  • the coil provided with its insulating coating 2 is removed from the first mold and tested to ensure that the coating 2 is free of voids.
  • This test can be carried out by any conventional method such as X-ray or by measurement of partial discharges which are caused by voids, when the winding is energized.
  • substantially voidless used herein means that the voids are invisible using an electron microscope set at a magnification of 1000.
  • the product obtained is placed in a second mold, not shown, in which the application is carried out by hot compression molding on the coating of thermoplastic insulating material. a second coating in a layer of electroconductive thermoplastic resin to obtain the surface layer 3 for fixing the potential of the high voltage winding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)

Claims (12)

  1. Hochspannungswicklung, umfassend eine Wicklung aus leitendem Draht, der mit einem isolierenden Mantel verkleidet ist, dadurch gekennzeichnet, dass die Wicklung (1) mit einem hochspannungsisolierenden thermoplastischen Harz (2) umhüllt ist und dass sie außerdem umfasst:
    - eine elektrisch leitende Oberflächenschicht (3) zur Fixierung des Potentials aus einem mit dem thermoplastischen Harz der isolierenden Umhüllung (2) kompatiblen thermoplastischen Harz, das auf diese Umhüllung aufgetragen ist;
    - ein Seitenband (4) aus isolierendem thermoplastischen Harz, das mit der elektrisch leitenden Oberflächenschicht (3) bedeckt ist und mit dem isolierenden Umhüllungswerkstoff (2) der Wicklung (1) kompatibel ist und bezüglich dieses eine Verdickung bildet und die Verbindungsleiter der Wicklung bedeckt, und dass Öffnungen (7, 8) in der Oberflächenschicht (3), der isolierenden Verkleidung (2) und dem Abdeckband (4) vorgesehen sind, um die Enden (5, 6) der Verbindungsleiter hindurchtreten zu lassen.
  2. Hochspannungswicklung nach Anspruch 1, dadurch gekennzeichnet, dass das isolierende Verkleidungsharz (2) aus der Gruppe ausgewählt ist, die umfasst: 6-6 Polyamide, 6-Polyamide, 4,6-Polyamide, 12,12 Polyamide, 6-12 Polyamide, aromatische Monomere enthaltende Polyamide, Polybutylenterephthalat, Polypropylenterephthalat, Polyethylennaphthalat, flüssigkristalline Polymere, Polycyclohexandimethylterephthalat, Copolyetherester, Polyphenylensulfid, Polyacyle, Polypropylen, Polyethylen, Polyacetale, Polymethylpenten, Polyetherimide, Polycarbonate, Polysulfone, Polyethersulfone, Polyphenylenoxide, Polystyrol, Styrolcopolymere, Mischungen und Pfropfcopolymere aus Styrol und Kautschuk und Mischungen dieser Körper.
  3. Wicklung nach Anspruch 2, dadurch gekennzeichnet, dass das thermoplastische Harz der isolierenden Umhüllung (2) Polyethylenterephthalat ist.
  4. Wicklung nach Anspruch 3, dadurch gekennzeichnet, dass das Polyethylenterephthalat mit Glasfasern chargiert ist.
  5. Wicklung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Dicke des thermoplastischen Harzes der isolierenden Umhüllung (2) zwischen 3 und 50 mm beträgt.
  6. Hochspannungswicklung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das elektrisch leitende thermoplastische Harz der Schicht (3) zur Fixierung des Potentials eine Kohlenstoffcharge enthält.
  7. Wicklung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das elektrisch leitende Harz aus denselben Werkstoffen wie das isolierende Verkleidungsharz ausgewählt ist und dass es außerdem 20 bis 70 % Kohlenstoffpartikel enthält.
  8. Verfahren zur Herstellung einer Hochspannungswicklung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass es darin besteht, dass
    - ein leitender Draht, der mit einem elektrisch isolierenden Mantel umhüllt ist, gewickelt wird, um eine hohle zylindrische Wicklung (1) zu bilden;
    - durch Formung in einer ersten Form eine erste Umhüllung der Wicklung mit einem elektrisch isolierenden thermoplastischen Harz vorgenommen wird, um eine Schicht (2) aus elektrisch isolierendem thermoplastischen Harz mit einer Dicke zu erhalten, die ausreicht, damit die Spule nach außen isoliert ist; und
    - durch Warmpressen auf der von der Schicht (2) aus thermoplastischem Harz gebildeten isolierenden Umhüllung ein Band (4) aus isolierendem thermoplastischen Harz hergestellt wird; und
    - durch Formung in einer zweiten Form eine zweite Umhüllung der Wicklung, die mit ihrer Schicht (2) aus elektrisch isolierendem thermoplastischen Harz und mit ihrem Band (4) aus isolierendem thermoplastischen Harz versehen ist, mit einer Schicht (3) aus elektrisch leitendem thermoplastischem Harz zur Fixierung des Potentials vorgenommen wird.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass die Phase der Umhüllung in der ersten Form darin besteht, dass
    - die Wicklung (1) in den Hohlraum einer Form eingesetzt wird, die mit einem Eintritt, einer Entlüftungsöffnung und Stangen zum Tragen eines Objekts in der Form versehen ist,
    - die Stangen in den Kontakt mit der Wicklung bewegt werden, um diese im Hohlraum zu tragen,
    - das elektrisch isolierende thermoplastische Harz in die Form durch ihren Eintritt eingespritzt wird,
    - die Stangen aus dem Hohlraum zurückgezogen werden, wenn das thermoplastische Harz in den Hohlraum eingespritzt ist, bevor es um die Stangen herum abbindet, um die Bildung von Hohstellen im elektrisch isolierenden thermoplastischen Harz zu verhindern,
    - das Austreten der Luft aus dem Hohlraum durch die Belüftungsöffnung gestattet wird, wenn das Harz sich in der Form bewegt und
    - damit fortgefahren wird, das elektrisch isolierende thermoplastische Harz einzuspritzen, bis die Form gefüllt ist, um eine von Hohlstellen praktisch freie Schicht (2) aus elektrisch isolierendem thermoplastischen Harz mit einer Dicke zu bilden, die ausreicht, damit die Spule nach außen isoliert ist.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass das Einspritzen des elektrisch isolierenden thermoplastischen Harzes weitergeführt wird, bis eine gleichmäßige Dicke von mindestens 3 mm auf dem Innendurchmesser und dem Außendurchmesser der Wicklung erhalten wird und eine gleichmäßige Dicke von mindestens 2,5 mm an den axialen Enden der Wicklung erhalten wird.
  11. Verfahren nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass die zweite Umhüllung mit der Schicht (3) aus elektrisch leitendem thermoplastischen Harz durch Formung durch Warmpressen hergestellt wird.
  12. Verwendung einer Hochspannungswicklung nach einem der Ansprüche 1 bis 7 zur Bildung der Hochspannungswicklung eines Trockentransformators.
EP96930211A 1996-09-04 1996-09-04 Hochspannunstrockenspule Expired - Lifetime EP0923784B8 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR1996/001356 WO1998010446A1 (fr) 1996-09-04 1996-09-04 Bobinage haute tension de type sec

Publications (3)

Publication Number Publication Date
EP0923784A1 EP0923784A1 (de) 1999-06-23
EP0923784B1 true EP0923784B1 (de) 2007-02-07
EP0923784B8 EP0923784B8 (de) 2007-03-21

Family

ID=9488837

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96930211A Expired - Lifetime EP0923784B8 (de) 1996-09-04 1996-09-04 Hochspannunstrockenspule

Country Status (9)

Country Link
US (1) US6445269B1 (de)
EP (1) EP0923784B8 (de)
JP (1) JP2000517480A (de)
AU (1) AU6934096A (de)
CA (1) CA2264904A1 (de)
CZ (1) CZ298139B6 (de)
DE (1) DE69636892T2 (de)
ES (1) ES2281085T3 (de)
WO (1) WO1998010446A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6624734B2 (en) * 2001-09-21 2003-09-23 Abb Technology Ag DC voltage/current heating/gelling/curing of resin encapsulated distribution transformer coils
US7398589B2 (en) * 2003-06-27 2008-07-15 Abb Technology Ag Method for manufacturing a transformer winding
US20080061919A1 (en) * 2006-03-22 2008-03-13 Marek Richard P Insulators for transformers
US20080061915A1 (en) * 2006-09-11 2008-03-13 Rodney Godbey Dry-type transformer with shielded core/coil assembly and method of manufacturing the same
US20080143465A1 (en) * 2006-12-15 2008-06-19 General Electric Company Insulation system and method for a transformer
FR2914105B1 (fr) 2007-03-20 2009-04-24 Schneider Electric Ind Sas Bobine de tension primaire ajustable pour transformateur sec et transformateur ht/bt la comprenant
CA2811262C (en) 2009-09-14 2016-06-21 Roger Faulkner Underground modular high-voltage direct current electric power transmission system
CA2803138C (en) * 2010-06-28 2020-06-09 Abb Technology Ag Transformer with shielded clamps
EP2518739B1 (de) 2011-04-27 2013-03-20 ABB Research Ltd. Isolierendes Gehäuse einer Hochspannungswicklung
US20130257214A1 (en) * 2012-03-30 2013-10-03 Abb Technology Ag Glass fiber composite material for electrical insulation
EP2797088A1 (de) * 2013-04-23 2014-10-29 ABB Technology AG Spule für einen Trockentransformator und Trockentransformator
ES2750450T3 (es) 2013-07-18 2020-03-25 Abb Schweiz Ag Estructura de bóveda resistente de seguimiento mejorado para el transformador de bobina fundida de tipo seco
EP2980820B1 (de) * 2014-08-01 2016-09-28 ABB Schweiz AG Laststufenschalter für Trockenwandler und Trockenwandler damit
DE102016202385A1 (de) * 2016-02-17 2017-08-17 Siemens Aktiengesellschaft Kompakter Trockentransformator mit einer elektrischen Wicklung und Verfahren zur Herstellung einer elektrischen Wicklung
CN206460860U (zh) * 2017-01-25 2017-09-01 台达电子企业管理（上海）有限公司 高压变压器及电子电力装置
US11250990B2 (en) * 2017-01-25 2022-02-15 Delta Electronics (Shanghai) Co., Ltd High-voltage transformer and electronic power apparatus
US11515080B2 (en) 2017-01-25 2022-11-29 Delta Electronics (Shanghai) Co., Ltd Transformer, coil unit and electronic power apparatus
US11417456B2 (en) * 2017-01-25 2022-08-16 Delta Electronics (Shanghai) Co., Ltd High-voltage transformer and electronic power apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045290A (en) * 1957-10-11 1962-07-24 Anderson Controls Inc Method of encapsulating coils
US4137515A (en) * 1974-09-19 1979-01-30 Matsushita Electric Industrial Co., Ltd. Synthetic resin packed coil assembly
US4008409A (en) * 1975-04-09 1977-02-15 General Electric Company Dynamoelectric machine core and coil assembly
JPS56146211A (en) * 1980-04-16 1981-11-13 Nippon Denso Co Ltd Ignition coil for internal combustion engine
US4543555A (en) * 1981-05-06 1985-09-24 The Boeing Company Coil assembly for hot melt induction heater apparatus
JPS593907A (ja) * 1982-06-29 1984-01-10 Hitachi Ltd モ−ルド変圧器
US4944975A (en) * 1988-10-03 1990-07-31 E. I. Du Pont De Nemours And Company Composite coil forms for electrical systems
JPH06188130A (ja) * 1992-12-17 1994-07-08 Toshiba Corp モールド型電気機器およびその製造方法

Also Published As

Publication number Publication date
ES2281085T3 (es) 2007-09-16
EP0923784A1 (de) 1999-06-23
CA2264904A1 (en) 1998-03-12
CZ298139B6 (cs) 2007-07-04
JP2000517480A (ja) 2000-12-26
DE69636892T2 (de) 2007-08-30
US6445269B1 (en) 2002-09-03
CZ64699A3 (cs) 2000-03-15
WO1998010446A1 (fr) 1998-03-12
EP0923784B8 (de) 2007-03-21
DE69636892D1 (de) 2007-03-22
AU6934096A (en) 1998-03-26

Similar Documents

Publication Publication Date Title
EP0923784B1 (de) Hochspannunstrockenspule
US7852180B2 (en) Method for producing breaker pole parts for low-voltage, medium-voltage and high-voltage switchgear assemblies, and breaker pole part itself
US4199743A (en) Encapsulated current transformer
FR2579005A1 (fr) Elements resistant aux hautes tensions, tels qu'isolateurs, et leurs procedes de production
US20100276831A1 (en) Cold-shrinkable type rubber insulation sleeve and method of manufacturing
WO1997039462A1 (fr) Parafoudre perfectionne a base de varistances
US20140174787A1 (en) Insulator for high-voltage gas insulated switch gear
US3513253A (en) Cast condenser bushing having tubular metal coated mesh plates
EP2255954A1 (de) Verfahren zum Zusammenbau einer Verbindung zwischen zwei Rohren, von den mindestens eines ein thermoplastisches Formteil ist, sowie Anwendung zur Herstellung einer Sicherungshaltevorrichtung für Hoch- oder Mittelspannung
MXPA04008898A (es) Dispositivo calentador de canal caliente y su metodo de fabricacion.
FR2735816A1 (fr) Bobine d'allumage a separateurs d'enroulement secondaire ne filtrant pas/ne segregant pas
EP0767472A1 (de) Verfahren zur Herstellung eines Isolators und mit diesem Verfahren hergestellter Isolator
FR2576655A1 (fr) Hauban isolant
FR2507378A1 (fr) Structure monobloc d'elements conducteurs avec un isolant entre eux
US4681985A (en) Premolded mechanically prestressed voltage stress control cones for high voltage cables and method of fabricating same
US2174377A (en) Termination and joint for electric cables
WO2010058034A1 (fr) Surmoulage en materiau composite smc ou bmc pour pole de disjoncteur a vide
EP0923783B1 (de) Elektrische Spule bestehend aus Wicklungen für Trockentransformatoren
CN1156860C (zh) 干式高压绕组
EP0644410B1 (de) Thermoelementfühler und Verfahren zu seiner Herstellung
EP0326483B1 (de) Feder mit hydrostatischem Zusammendrücken eines Elastomers und Verfahren zur Herstellung
JP2677869B2 (ja) 電力ケーブル用接続箱の組立方法
KR100387082B1 (ko) 매립형 절연변압기 및 제조방법
KR910003581B1 (ko) 가교폴리에티렌 절연 케이블의 접속부 절연체 형성방법
JPH08236242A (ja) 架橋ポリオレフィン絶縁ケーブルの押出しモールド型接続部の形成方法

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

17P Request for examination filed

Effective date: 19990224

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE ES FI FR GB IT NL SE

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

Owner name: ELECTRICITE DE FRANCE SERVICE NATIONAL

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SA

Owner name: E.I. DU PONT DE NEMOURS AND COMPANY

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

Owner name: ELECTRICITE DE FRANCE SERVICE NATIONAL

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SA

Owner name: E.I. DU PONT DE NEMOURS AND COMPANY

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

Owner name: ELECTRICITE DE FRANCE

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SA

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

Owner name: ELECTRICITE DE FRANCE

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SAS

17Q First examination report despatched

Effective date: 20020826

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE ES FI FR GB IT NL SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070207

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SAS

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20070226

REF Corresponds to:

Ref document number: 69636892

Country of ref document: DE

Date of ref document: 20070322

Kind code of ref document: P

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SAS

Effective date: 20070221

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2281085

Country of ref document: ES

Kind code of ref document: T3

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: SIEMENS AG ABTEILUNG: CT IP PTD

Effective date: 20071102

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20091127

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

Ref country code: DE

Payment date: 20100918

Year of fee payment: 15

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

Ref country code: FI

Payment date: 20110912

Year of fee payment: 16

Ref country code: FR

Payment date: 20110928

Year of fee payment: 16

Ref country code: SE

Payment date: 20110913

Year of fee payment: 16

Ref country code: GB

Payment date: 20110831

Year of fee payment: 16

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

Ref country code: IT

Payment date: 20110914

Year of fee payment: 16

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

Ref country code: ES

Payment date: 20111017

Year of fee payment: 16

Ref country code: BE

Payment date: 20110913

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 69636892

Country of ref document: DE

Effective date: 20111228

BERE Be: lapsed

Owner name: SCHNEIDER ELECTRIC INDUSTRIES SAS

Effective date: 20120930

Owner name: ELECTRICITE DE FRANCE

Effective date: 20120930

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

Ref country code: SE

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

Effective date: 20120905

Ref country code: FI

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

Effective date: 20120904

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120904

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130531

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: 20130403

Ref country code: GB

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

Effective date: 20120904

Ref country code: BE

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

Effective date: 20120930

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

Effective date: 20120904

Ref country code: FR

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

Effective date: 20121001

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69636892

Country of ref document: DE

Effective date: 20130403

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20131018

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

Ref country code: ES

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

Effective date: 20120905