EP1014398B1 - Transformateur de courant dans une installation de commutation à gaz isolant - Google Patents

Transformateur de courant dans une installation de commutation à gaz isolant Download PDF

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Publication number
EP1014398B1
EP1014398B1 EP99118349A EP99118349A EP1014398B1 EP 1014398 B1 EP1014398 B1 EP 1014398B1 EP 99118349 A EP99118349 A EP 99118349A EP 99118349 A EP99118349 A EP 99118349A EP 1014398 B1 EP1014398 B1 EP 1014398B1
Authority
EP
European Patent Office
Prior art keywords
current transformer
wall
transformer according
annular core
bulkhead
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
EP99118349A
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German (de)
English (en)
Other versions
EP1014398A1 (fr
Inventor
Erwin Dipl.-Ing. Reichl
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 Sachsenwerk GmbH
Original Assignee
Areva Sachsenwerk 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 Areva Sachsenwerk GmbH filed Critical Areva Sachsenwerk GmbH
Publication of EP1014398A1 publication Critical patent/EP1014398A1/fr
Application granted granted Critical
Publication of EP1014398B1 publication Critical patent/EP1014398B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 a current transformer for Use in a gas-insulated switchgear, in particular in a medium voltage switchgear, with a annular core, with a primary winding of one Primary conductor and with a secondary winding through which the Core is at least partially wound.
  • a current measuring device is known from DE 28 33 035 A1 an annular core made of an electrically insulating Known material, partially in a housing and is partially arranged outside the housing.
  • the ring-shaped core is a conductor through which the to measuring current flows.
  • On the inside of the case part of the core is a secondary winding applied, from which a signal can be tapped, the is a measure of the current to be measured.
  • the well-known Current measuring device comes without high voltage insulation out because the core due to its electrically insulating Features a high voltage resistant insulation between the conductor lying at a high voltage potential and the secondary winding which is at earth potential causes.
  • Current transformers of the type mentioned are used to detect the by Primary conductor of a switchgear cubicle flowing current for protection and / or measurement purposes.
  • Air-insulated switchgear is used for current detection usually using so-called support current transformers, which in Course of the busbars of the panel and thus arranged within the metal-enclosed panels are.
  • the core of these current transformers is common ring-shaped, but not with is equated in a circular shape. Rather, the core can also have a shape deviating from the circular shape.
  • the primary conductor of these current transformers is usually in several Windings through the material made of magnetically highly permeable manufactured core led. The core is with the Secondary winding wound.
  • Such current transformers will be also referred to as a winding current transformer.
  • Toroidal current transformers are single-wire current transformers, d. H. the primary winding consists of a Turn. This turn is made approximately from the center the annular core guided primary conductor and Any current feedback located outside.
  • the Toroidal current transformers are over their entire core scope provided with the turns of the secondary winding.
  • a Special form of toroidal current transformers form two parts Versions that due to their structure also retrospectively e.g. be installed around an already laid cable can. Because both core and secondary winding cut, they are, however, for high demands Accuracy classes not suitable and mostly as Billing converter not allowed.
  • the control panels of gas-insulated switchgear show from Pressure filled gas compartments surrounded by pressure vessels, in which the components of the panels are arranged. Because of the closed, gas-filled bulkheads is a Installation of the current transformers in the interior of the switch panels problematic. That is why the current transformers usually arranged outside the bulkheads. In the As a rule, the current transformers are specially trained Areas of the pressure vessel arranged. However, that has the Disadvantage that the pressure vessel of the control panel have to be complicated and complex in order to on the one hand to be able to accommodate the current transformers and around on the other hand, a safe encapsulation of the gas-filled To be able to achieve ballast rooms. Since the current detection for each phase of a switchgear must be done separately it is also necessary that the three-pole encapsulation in the Area of the current transformers in single-pole encapsulation sections is transferred.
  • the current transformers are difficult to access, namely only after Open the pressure tank. With a change in nominal current the current transformers have to be replaced, which is very Extensively designed. Furthermore, the secondary conductors gas-tight lead out of the bulkheads. It there is also an increased risk of rollovers from the primary conductor to the secondary coil. The Self-heating of the current transformers leads to another Increase in the operating temperature in the compartment. Thereby the heat dissipation from the bulkhead becomes one serious problem. After all, it can be in one Bulkhead arranged current transformers to disturb capacitive couplings come on the secondary coil.
  • the invention is based on of the current transformer of the type mentioned above that the ring-shaped core partially in a gas-tight Bulkhead of the switchgear and partly outside the Bulkhead is arranged.
  • the core of the current transformer according to the invention is the Wall of the gas-tight bulkhead in two parts divided.
  • the current transformer according to the invention connects in advantageously the benefits of one within one Bulkhead arranged current transformer with one current transformer arranged outside a bulkhead.
  • the Current transformer with the two-part core avoids all aforementioned disadvantages of the prior art.
  • the current-carrying secondary part of the Current transformer is arranged outside the bulkhead, can be caused by the current transformer during operation generated waste heat easily to the surrounding Outside air are released. There are also no problems with sheath currents in single-pole encapsulated Housing sections.
  • the pressure vessel of the Bulkheads are designed to be particularly simple.
  • the current transformer according to the invention has one extremely small space requirement.
  • the primary winding of the current transformer is advantageously on passing the primary conductor through the interior of the annular core is reduced.
  • the primary winding of the Physically, the primary conductor therefore has one turn on.
  • a current transformer with such a design Primary winding is also called a single-wire current converter designated.
  • the ring-shaped core of the current transformer according to the invention preferably consists of a magnetizable material, in particular from an iron material.
  • the annular core be made from one another arranged annular sheets.
  • the sheets thus extend in a direction perpendicular to Course of the primary conductor. That then has an impact on the magnetic flux in the core if one with one magnetic preferred direction sheet metal used becomes.
  • the individual sheets and thus the core of the Current transformers do not necessarily have one circular cross-sectional area. Rather, the Cross-sectional area of the sheets can be designed as desired.
  • Properties of the current transformer can be influenced in a targeted manner. Through material accumulations on the outside of the compartment lying part of the core can be the size of the inside of the compartment arranged part of the current transformer can be reduced.
  • the Current transformers through appropriate fastening devices easily attached to the bulkhead wall become.
  • the individual sheets of the core are preferred punched.
  • the ring-shaped core made of sheet metal tape wound in a ring consists.
  • Such trained cores are after a Winding process in which the sheet metal strip, preferably with the addition of adhesive to form a core a desired winding height is wound.
  • the metal strip thus extends in a direction parallel to the course of the primary conductor.
  • the part of the annular core that is arranged outside the bulkhead, with the Secondary winding is wound.
  • This has the advantage that the secondary conductors are not gastight from the compartments must be brought out.
  • the outside lying secondary winding from the higher voltage of the Dielectric shielded primary conductor completely. Thereby this is not the case, for example, with small signal current transformers problematic capacitive voltage coupling.
  • the secondary winding if necessary, very simple to be replaced.
  • the part of ring-shaped core that is inside the bulkhead is arranged, is provided with the primary winding.
  • the Separation of primary winding and secondary winding has the Advantage that the risk of rollovers from the Primary conductor to the secondary coil is avoided. There no voltage coupling problems or Direct arcing to the secondary winding can occur the current transformer according to the invention is also very good for Suitable for high voltages.
  • the annular core is continuous is trained and the wall of the bulkhead with Through openings are provided through which the core of the Inside the bulkhead is led outside. That sets that the wall in the area of the through openings is sealed against the core.
  • the annular core be at least one Air gap through which the magnetic path of the annular core is interrupted. From "air gap” is spoken in the description below, if there is actually no gap filled with air or insulating gas is present, but this from a non-magnetizable Material is formed or filled.
  • the magnetic The current transformer is designed so that a Saturation practically only in the area of short-circuit currents entry. In order to expand this area, too, is working one, for example, with air gaps in the magnetic path.
  • the length of the Air gaps is preferably less than or equal to 1% of the entire magnetic path length.
  • the air gaps can be anywhere on the Magnetic path of the core can be formed. If the air gaps are formed in the area of the wall of the bulkhead, then the annular core is through the air gaps physically into one within the bulkhead arranged part and in an outside of the compartment arranged part divided. According to a preferred embodiment proposed that the wall of the gas-tight bulkhead from one not magnetizable material and that the ring-shaped Core has two air gaps that the annular core in a part located inside the bulkhead and in a part located outside the bulkhead divide.
  • the wall of the gas-tight advantageously runs Bulkhead through the air gaps.
  • the wall of the gas-tight bulkhead at least one Has cutout in which a wall part is inserted that runs through at least one of the air gaps.
  • the wall has a cutout in which a wall part is used by both Air gap of the annular core runs. That has the Advantage that a complete current transformer unit, consisting of that arranged within the bulkhead Part of the core that is located outside the bulkhead Part of the core and the wall part, prefabricated and can be checked for functionality. This current transformer unit can then by inserting the wall part into the intended cutout used in the wall and with the wall can be connected gastight.
  • the wall has two cutouts into which one wall part is used. One of each both wall parts run through one of the two Air gaps of the annular core.
  • the wall part is advantageously in the cutout welded into the wall of the bulkhead.
  • the wall part on the wall of the Bulkhead screwed and against the wall by means of a sealing element is sealed.
  • the wall part advantageously has a different one Strength, especially a lower strength than that Wall of the bulkhead. It is also conceivable that Wall part other magnetic and / or electrical Has properties as the wall of the bulkhead.
  • the is within of the gas-tight bulkhead arranged part of the annular core grounded. It is also preferred that the gas-tight is outside Part of the annular core arranged in the bulkhead grounded.
  • the inside of the gas-filled Part of the annular core arranged on the bulkhead Is fixed inside the wall of the bulkhead.
  • the one inside the gas-filled one Part of the annular core arranged by means of a bulkhead a strap on the inside of the wall of the Bulkhead attached. The ends of the strap are on attached to the wall, preferably with the wall screwed.
  • the outside of the Part of the annular gas-tight bulkhead arranged Kerns on the outside of the wall of the bulkhead is attached.
  • the one outside the gas-tight bulkhead arranged part of the annular core advantageously by means of a band clamp on the Outside the wall of the bulkhead is attached.
  • the Ends of the band clamp are attached to the wall, preferably screwed to the wall.
  • Fastening options listed can be the partial cores of the annular core in any other way on the Wall of the bulkhead to be attached.
  • the Invention proposed that the current transformer as a Small signal current transformer is formed.
  • a current transformer according to the invention for Use in a gas-insulated switchgear, in particular in a medium voltage switchgear.
  • the Current transformer has an annular core 1, 6, with a primary winding of a primary conductor 2 and with one Secondary winding 7 of a secondary coil 9 through which the Core 1, 6 is at least partially wound.
  • the one in the Primary conductor 2 should flow through the current current transformers according to the invention are detected.
  • the annular core 1, 6 is partially in a gas-tight filled with an insulating gas Compartment 10 of the switchgear and partially outside of Bulkhead 10 arranged. Part 6 of the annular Core 1, 6, which is arranged outside the compartment 10 is with the secondary winding 7 of the secondary coil 9 wound.
  • Part 1 of the annular core 1, 6, the is arranged within the compartment 10, with the Provide primary winding of the primary conductor 2.
  • the Primary winding is on passing the primary conductor through 2 reduced by the interior of the annular core 1, 6.
  • the ring-shaped core 1, 6 has a production-related one rectangular cross-section.
  • electrodes 3a and 3b are arranged, which serve the to improve the electrical field in the region of the partial core 1 and thus a minimal distance between the current-carrying primary conductor 2 and the grounded partial core 1 to enable.
  • Fig. 1 is the Partial core 1 by means of a tension band 4 on the inside the wall 5 of the gas-tight bulkhead 10 attached.
  • the partial core 6 is on the outside of the wall 5 of the gas-tight bulkhead 10 by means of a band clamp 8 attached.
  • a tension band 4 on the inside the wall 5 of the gas-tight bulkhead 10 attached.
  • the partial core 6 is on the outside of the wall 5 of the gas-tight bulkhead 10 by means of a band clamp 8 attached.
  • the annular core 1, 6 has two air gaps through which interrupted the magnetic path of the annular core 1, 6 is.
  • the air gaps divide the annular core 1, 6 in partial core 1 and partial core 6. Through the air gaps in the magnetic circuit the entry of the Iron saturation shifted towards higher current values.
  • the Wall 5 consists of a non-magnetizable Material and is arranged in the air gaps.
  • the structure 2 is a current transformer according to the invention shown a second embodiment.
  • the structure 2 essentially corresponds to that Structure of the current transformer from Fig. 1.
  • the current transformer from FIG. 2 has one different structure in the area of the air gaps.
  • the wall 5 the compartment 10 is provided with two cutouts 11, in the wall parts 12 with a smaller material thickness than the wall 5 are used gas-tight.
  • the Wall parts 12 are welded into the cutouts 11. This embodiment is then particularly advantageous if the material thickness of the wall 5 is relatively large, or if for other reasons a shorter air gap seems desirable.
  • the wall parts 12 used also allow the possibility of the remaining wall 5 different materials with e.g. B. better or targeted magnetic properties and / or electrical Properties (e.g. a lower electrical conductivity to avoid eddy currents).
  • the 3 is in the two Air gaps between the partial core 1 and the partial core 6 that Wall part 14 arranged.
  • the partial core 1, the Wall part 14 and the partial core 6 are to the Current transformer unit summarized.
  • This current transformer unit is in a in the wall 5 of the bulkhead 10th trained section 13 as a complete unit used.
  • the wall part 14 in the area of Section 13 screwed to the wall 5, between the Wall part 14 and the wall 5 runs in Sealing element 15 made of an elastomer. It is also conceivable, the wall part 14 in the cutout 13 of the Weld wall 5.
  • annular core 1, 6 of the current transformers shown made from a ring-wound sheet metal strip. at This winding process is used to make the thin strip of magnetic sheet, z. B. with the addition of an adhesive to the core 1, 6 with the required winding height and later in Area of the air gaps in the desired partial cores 1, 6 separated.
  • the shown current transformer a core 1, 6, which from appropriately shaped, one above the other, annular magnetic sheets is constructed.
  • the magnetic sheets are usually produced by stamping.
  • a core 1, 6 constructed in this way can have a simple shape Ways can be varied as desired.
  • a compact design of the partial core 6 outside of Bulkhead 10 a smaller size of the core 1, 6 and so that the entire current transformer can be achieved.
  • a Execution of compared to the rest of the core cross-section Larger-area pole pieces allow influencing the magnetic field strength to smaller specific ones Values.
  • the partial cores 1, 6 in the area the wall 5 can be designed such that they on a simple and quick and safe on the wall 5 can be attached.
  • the partial cores 1, 6 by means of Clamps 16 braced against each other. Between Partial cores 1, 6, the wall parts 12 are clamped. The Partial cores 1, 6 are on the clamps 16 on the Wall 5 attached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Transformer Cooling (AREA)

Claims (23)

  1. Transformateur de courant dans une installation de commutation à gaz isolant, notamment dans une installation de commutation à moyenne tension, comportant un noyau annulaire (1, 6), un enroulement primaire d'un conducteur primaire (2) et un enroulement secondaire (7) par lequel le noyau (1, 6) est entouré au moins en partie, caractérisé en ce que le noyau annulaire (1, 6) est agencé en partie à l'intérieur d'une chambre à cloison étanche au gaz (10) de l'installation de commutation et en partie à l'extérieur de la chambre à cloison étanche (10).
  2. Transformateur de courant selon la revendication 1, caractérisé en ce que l'enroulement primaire est réduit à une traversée du conducteur primaire (2) à travers l'intérieur du noyau annulaire (1, 6).
  3. Transformateur de courant selon la revendication 1 ou 2, caractérisé en ce que le noyau annulaire (1, 6) est fabriqué dans un matériau magnétisable.
  4. Transformateur de courant selon la revendication 3, caractérisé en ce que le noyau annulaire (1, 6) est fabriqué dans une matière en fer.
  5. Transformateur de courant selon l'une des revendications 1 à 4, caractérisé en ce que le noyau annulaire (1, 6) est composé de tôles annulaires agencées les unes au-dessus des autres.
  6. Transformateur de courant selon l'une des revendications 1 à 4, caractérisé en ce que le noyau annulaire (1, 6) est composé d'une bande de tôle enroulée de façon annulaire.
  7. Transformateur de courant selon l'une des revendications 1 à 6, caractérisé en ce que la partie (6) du noyau annulaire (1, 6) qui est agencée à l'extérieur de la chambre à cloison étanche (10) est entourée par l'enroulement secondaire (7).
  8. Transformateur de courant selon l'une des revendications 1 à 7, caractérisé en ce que la partie (1) du noyau annulaire (1, 6), qui est agencée à l'intérieur de la chambre à cloison étanche (10), est pourvue de l'enroulement primaire.
  9. Transformateur de courant selon l'une des revendications 3 à 8, caractérisé en ce que le noyau annulaire (1, 6) présente au moins un entrefer par lequel le trajet de l'aimant du noyau annulaire (1, 6) est interrompu.
  10. Transformateur de courant selon la revendication 9, caractérisé en ce que la paroi (5) de la chambre à cloison étanche au gaz (10) est fabriquée dans un matériau non magnétisable et que le noyau annulaire (1, 6) présente deux entrefers qui divisent le noyau annulaire (1, 6) en une partie (1) agencée à l'intérieur de la chambre à cloison étanche (10) et une partie (6) agencée à l'extérieur de la chambre à cloison étanche (10).
  11. Transformateur de courant selon la revendication 10, caractérisé en ce que la paroi (5) de la chambre à cloison étanche au gaz (10) s'étend à travers les entrefers.
  12. Transformateur de courant selon la revendication 10, caractérisé en ce que la paroi (5) de la chambre à cloison étanche au gaz (10) présente au moins une découpe (11, 13) dans laquelle une partie de paroi (12, 14) est insérée, laquelle s'étend au moins à travers l'un des entrefers.
  13. Transformateur de courant selon la revendication 12, caractérisé en ce que la partie de paroi (12, 14) est soudée dans la découpe de la paroi.
  14. Transformateur de courant selon la revendication 12, caractérisé en ce que la partie de paroi (12, 14) est vissée sur la paroi (5) de la chambre à cloison étanche (10) et rendue étanche par rapport à la paroi (5) au moyen d'un élément d'étanchéité (15).
  15. Transformateur de courant selon l'une des revendications 12 à 14, caractérisé en ce que la partie de paroi (12, 14) présente une épaisseur différente de celle de la paroi (5) de la chambre à cloison étanche (10), en particulier une épaisseur plus faible.
  16. Transformateur de courant selon l'une des revendications 12 à 15, caractérisé en ce que la partie de paroi (12, 14) présente des caractéristiques magnétiques et/ou électriques différentes de celles de la paroi (5) de la chambre à cloison étanche (10).
  17. Transformateur de courant selon l'une des revendications 10 à 16, caractérisé en ce que la partie (1) du noyau annulaire (1, 6) agencée à l'intérieur de la chambre à cloison étanche (10) est mise à la terre.
  18. Transformateur de courant selon l'une des revendications 10 à 17, caractérisé en ce que la partie (6) du noyau annulaire (1, 6) agencée à l'extérieur de la chambre à cloison étanche (10) est mise à la terre.
  19. Transformateur de courant selon l'une des revendications 10 à 18, caractérisé en ce que la partie (1) du noyau annulaire (1, 6) agencée à l'intérieur de la chambre à cloison étanche au gaz (10) est fixée sur la face intérieure de la paroi (5) de la chambre à cloison étanche (10).
  20. Transformateur de courant selon la revendication 19, caractérisé en ce que la partie (1) du noyau annulaire (1, 6) agencée à l'intérieur de la chambre à cloison étanche (10) est fixée au moyen d'une bande de serrage (4) sur la face intérieure de la paroi (5) de la chambre à cloison étanche (10).
  21. Transformateur de courant selon l'une des revendications 10 à 20, caractérisé en ce que la partie (6) du noyau annulaire (1, 6) agencée à l'extérieur de la chambre à cloison étanche au gaz (10) est fixée sur la face extérieure de la paroi (5) de la chambre à cloison étanche (10).
  22. Transformateur de courant selon la revendication 21, caractérisé en ce que la partie (6) du noyau annulaire (1, 6) agencée à l'extérieur de la chambre à cloison étanche (10) est fixée au moyen d'un collier de serrage (8) sur la face extérieure de la paroi (5) de la chambre à cloison étanche (10).
  23. Transformateur de courant selon l'une des revendications 1 à 22, caractérisé en ce que le transformateur de courant est réalisé sous la forme d'un transformateur de courant à petits signaux.
EP99118349A 1998-12-24 1999-09-16 Transformateur de courant dans une installation de commutation à gaz isolant Expired - Lifetime EP1014398B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19860210A DE19860210A1 (de) 1998-12-24 1998-12-24 Stromwandler zum Einsatz in einer gasisolierten Schaltanlage
DE19860210 1998-12-24

Publications (2)

Publication Number Publication Date
EP1014398A1 EP1014398A1 (fr) 2000-06-28
EP1014398B1 true EP1014398B1 (fr) 2004-11-17

Family

ID=7892761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99118349A Expired - Lifetime EP1014398B1 (fr) 1998-12-24 1999-09-16 Transformateur de courant dans une installation de commutation à gaz isolant

Country Status (6)

Country Link
EP (1) EP1014398B1 (fr)
AT (1) ATE282892T1 (fr)
DE (2) DE19860210A1 (fr)
ES (1) ES2227944T3 (fr)
HK (1) HK1030475A1 (fr)
PT (1) PT1014398E (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR778774A (fr) * 1933-08-03 1935-03-23 Delle Atel Const Electr Perfectionnements à l'isolement des transformateurs d'intensité à haute tension
DE1243776B (de) * 1962-10-31 1967-07-06 Siemens Ag Stromwandler fuer eine mittels Kunststoff vollisolierte, metallgekapselte Hochspannungs-schaltanlage
DE1488796A1 (de) * 1965-08-19 1969-04-03 Bbc Brown Boveri & Cie Ring- oder rahmenfoermiger Aufsteckstromwandler
DE1488797A1 (de) * 1965-09-03 1969-04-03 Bbc Brown Boveri & Cie Ring- oder rahmenfoermiger Aufsteckstromwandler
DE1807835A1 (de) * 1968-11-05 1970-05-21 Siemens Ag Kabelumbauwandler mit unmagnetischen Kernspalten
CH514923A (de) * 1970-04-17 1971-10-31 Bbc Brown Boveri & Cie Ringkernstromwandler an einer metallgekapselten druckgasisolierten Hochspannungsschaltanlage
FI50460C (fi) * 1974-10-28 1976-03-10 Stroemberg Oy Ab Putkieristeinen vaippasydänvirtamuuntaja
DE2833035B2 (de) * 1978-07-25 1981-03-12 Siemens AG, 1000 Berlin und 8000 München Strommeßeinrichtung
FR2640416B1 (fr) * 1988-12-13 1991-01-25 Delta Dore Transformateur d'intensite a circuit magnetique annulaire
JP3235379B2 (ja) * 1994-10-27 2001-12-04 日新電機株式会社 電子除湿器
DE4445867A1 (de) * 1994-12-22 1996-06-27 Abb Patent Gmbh Stromwandler

Also Published As

Publication number Publication date
DE59911088D1 (de) 2004-12-23
DE19860210A1 (de) 2000-06-29
ATE282892T1 (de) 2004-12-15
ES2227944T3 (es) 2005-04-01
HK1030475A1 (en) 2001-05-04
EP1014398A1 (fr) 2000-06-28
PT1014398E (pt) 2005-02-28

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