EP0709864B1 - Transformer encapsulated in cast resin - Google Patents

Transformer encapsulated in cast resin Download PDF

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Publication number
EP0709864B1
EP0709864B1 EP95116433A EP95116433A EP0709864B1 EP 0709864 B1 EP0709864 B1 EP 0709864B1 EP 95116433 A EP95116433 A EP 95116433A EP 95116433 A EP95116433 A EP 95116433A EP 0709864 B1 EP0709864 B1 EP 0709864B1
Authority
EP
European Patent Office
Prior art keywords
bore
connection
cast
connection element
bulge
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
EP95116433A
Other languages
German (de)
French (fr)
Other versions
EP0709864A3 (en
EP0709864A2 (en
Inventor
Rudolf Dedelmahr
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0709864A2 publication Critical patent/EP0709864A2/en
Publication of EP0709864A3 publication Critical patent/EP0709864A3/xx
Application granted granted Critical
Publication of EP0709864B1 publication Critical patent/EP0709864B1/en
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
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • 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

Definitions

  • the present invention relates to a cast resin transformer with at least one primary winding, at least one Secondary winding and at least one with cast connection element, that via a connecting wire to the primary winding or the secondary winding is electrically connected and to that, e.g. by means of screw connection, one transformer-external connecting line can be connected, wherein the connecting element has a hole for receiving the connecting wire has and the lead wire inserted into the bore is (DE-PS 29 04 746 corresponding to EP 0 014 418 A1).
  • a magnetic coil unit is known the one cast in a casting compound together with the winding Connection elements mechanically firm and electrical Conductively connected to the winding via conductor bars are that these conductor bars are deformed in the manner of a Knurling.
  • the connecting wires are also over Solder points connected to the conductor bars.
  • Similar transformers are also used, for example, by Trafo-Union GmbH under the name GEAFOL cast resin transformers manufactured and distributed.
  • the object of the present invention is a simple, reliable and inexpensive connection between to produce the connecting wire and the connecting element.
  • the deformation is designed as a bulge.
  • the bulge can be caused by upsetting what accommodates the simple manufacturability.
  • the hole can as a blind hole or alternatively as a through hole be trained.
  • the connecting element can advantageously be a threaded bore to hold a screw to connect the Have connection line with the bore radially or axially is arranged for tapping. This allows the cast resin transformer conveniently connected to the network become.
  • the threaded hole and / or the hole can be advantageous be arranged eccentrically so that a lateral connection is possible.
  • the connecting element preferably consists of Brass, whereby the connecting wire is preferably made of copper. This ensures good contact.
  • the transformer 1 shows a three-phase transformer, the three primary windings 1 and three secondary windings 2, which each in pairs concentrically on the three columns 3 of the Transformer core 4 are arranged.
  • the primary windings 1 are connected to the connecting elements 6 via the connecting wires 5 connected.
  • the secondary windings 2 are over the connecting wires 7 connected to the connecting elements 8.
  • a primary three-phase network with the phases R, S and T or a secondary three-phase network can be connected with phases U, V and W.
  • the entire transformer including transformer core 4, windings 1, 2, connection elements 6, 8 and connecting wires 5, 7 in resin 11th poured. So from the outside there are only the connecting elements 6, 8 accessible.
  • the windings can alternatively also each form encapsulated units that are based on a common, not potted core are arranged.
  • connection elements 6, 8 are as hexagon cast nuts educated.
  • the connection elements 6, 8 have each have a threaded bore 12, into which one in FIG. 2 Screw not shown is screwed. Means Such a screw connection becomes the transformer external Connection lines 9, 10 connected to the transformer.
  • the connection elements 6, 8 also each have a bore 13, which in the cast state Connection elements 6, 8 is directed inwards and the Receiving the connecting wires 5, 7 is used.
  • FIG. 2 it points into the bore 13 inserted connecting wire 5 in the area of the connecting element 6 a bulge 14 on.
  • the bulge 14 can e.g. by Upset. Due to the bulge 14 is the Lead 5 mechanically fixed and electrically conductive with the connecting element 6 connected.
  • the connection is both gas and liquid tight. It can absorb tensile forces and acts as a protection against twisting.
  • the bulge 14 can, depending on the configuration of the bore 13 be designed differently. If the bore 13 is a simple one Is bore, bulge 14 is at the entrance to the bore 13 arranged. If the hole is half open or one Has bulge, the bulge 14 can alternatively or additionally in the half-open area of the bore 13 or be arranged in the puncture area of the bore 13.
  • the bore 13 is axially to Threaded bore 12 arranged, both the threaded bore 12 as well as the bore 13 outside the line of symmetry Pouring nut 6, that is to say eccentrically. Thereby the pouring nut 6 can be kept compact.
  • the bore 13 is in the present Case designed as a blind hole.
  • the bore 13 could also be designed as a through hole.
  • connection wire 7 shows a further embodiment of the connection between Connection wire 7 and connection element 8.
  • the essential The difference from the first embodiment is that the Bore 13 not axially but radially to the threaded bore 12 is arranged. In this embodiment, too Bore 13 formed as a through hole. You could but, as shown in FIG. 2, also as a blind hole be trained.
  • the invention described above is particularly advantageous when the connecting element 6, 8 consists of brass and the connecting wire 5, 7 made of copper. Especially with this one Combination is required for soldering flux, which can only be removed with great effort leaves. Other working methods such as welding or squeezing are against it for other technical reasons not possible.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Insulating Of Coils (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

The transformer has at least a primary winding (1), a secondary winding, and an integral connection element (6,8). The connection element is connected to the primary or secondary winding via a connection wire (5,7). The connector is also connected to an external wire (9,10) via a screw connection. The connection element (6,8) include a bore (13) for receiving the connection wire (5,7). The connection wire has a deformation (14) for mechanically and electrically fixing the wire to the connection element. The bore is eccentric, and the wire is made of brass and/or copper.

Description

Die vorliegende Erfindung betrifft einen Gießharztransformator mit mindestens einer Primärwicklung, mindestens einer Sekundärwicklung und mindestens einem mit eingegossenen Anschlußelement, das über einen Anschlußdraht mit der Primärwicklung oder der Sekundärwicklung elektrisch leitend verbunden ist und an das, z.B. mittels Schraubverbindung, eine transformatorexterne Anschlußleitung anschließbar ist, wobei das Anschlußelement eine Bohrung zur Aufnahme des Anschlußdrahtes aufweist und der Anschlußdraht in die Bohrung eingeführt ist (DE-PS 29 04 746 entsprechend der EP 0 014 418 A1).The present invention relates to a cast resin transformer with at least one primary winding, at least one Secondary winding and at least one with cast connection element, that via a connecting wire to the primary winding or the secondary winding is electrically connected and to that, e.g. by means of screw connection, one transformer-external connecting line can be connected, wherein the connecting element has a hole for receiving the connecting wire has and the lead wire inserted into the bore is (DE-PS 29 04 746 corresponding to EP 0 014 418 A1).

Aus der US-PS 38 38 372 ist eine Magnetspuleneinheit bekannt, bei der in einer Vergußmasse mitsamt der Wicklung eingegossene Anschlußelemente mechanisch fest und elektrisch leitend über Leiterstäbe mit der Wicklung dadurch verbunden sind, daß diese Leiterstäbe Verformungen in der Art einer Rändelung aufweisen. Die Anschlußdrähte sind zusätzlich über Lötstellen mit den Leiterstäben verbunden.From US-PS 38 38 372 a magnetic coil unit is known the one cast in a casting compound together with the winding Connection elements mechanically firm and electrical Conductively connected to the winding via conductor bars are that these conductor bars are deformed in the manner of a Knurling. The connecting wires are also over Solder points connected to the conductor bars.

Ähnliche Transformatoren werden beispielsweise auch von der Trafo-Union GmbH unter der Bezeichnung GEAFOL-Gießharztransformatoren hergestellt und vertrieben.Similar transformers are also used, for example, by Trafo-Union GmbH under the name GEAFOL cast resin transformers manufactured and distributed.

Die Aufgabe der vorliegenden Erfindung besteht darin, eine einfache, zuverlässige und kostengünstige Verbindung zwischen dem Anschlußdraht und dem Anschlußelement herzustellen.The object of the present invention is a simple, reliable and inexpensive connection between to produce the connecting wire and the connecting element.

Diese Aufgabe wird mit einem Gießharztransformator gemäß den Merkmalen des Patentanspruchs 1 gelöst. Die verwendete Verbindungstechnik erlaubt einen zuverlässigen Betrieb des Transformators. Alterungsschäden wie bei einer Lötstelle treten dabei nicht auf.This task is performed with a cast resin transformer according to the Features of claim 1 solved. The connection technology used allow one reliable operation of the transformer. Aging damage as with a solder joint, this does not occur.

Die Verformung ist als Aufbauchung ausgebildet. Die Aufbauchung kann dabei durch Stauchen bewirkt sein, was der einfachen Herstellbarkeit entgegenkommt. Die Bohrung kann als Sackbohrung oder alternativ als Durchgangsbohrung ausgebildet sein.The deformation is designed as a bulge. The bulge can be caused by upsetting what accommodates the simple manufacturability. The hole can as a blind hole or alternatively as a through hole be trained.

Das Anschlußelement kann vorteilhafterweise eine Gewindebohrung zur Aufnahme einer Schraube zum Anschließen der Anschlußleitung aufweisen wobei die Bohrung radial oder axial zur Gewindebohrung angeordnet ist. Damit kann der Gießharztransformator in zweckmäßiger Weise an das Netz angeschlossen werden.The connecting element can advantageously be a threaded bore to hold a screw to connect the Have connection line with the bore radially or axially is arranged for tapping. This allows the cast resin transformer conveniently connected to the network become.

Die Gewindebohrung und/oder die Bohrung können mit Vorteil exzentrisch angeordnet sein, so daß eine seitliche Verbindung möglich ist. Das Anschlußelement besteht bevorzugt aus Messing, wobei der Anschlußdraht bevorzugt aus Kupfer besteht. Somit ist eine gute Kontaktierung gegeben.The threaded hole and / or the hole can be advantageous be arranged eccentrically so that a lateral connection is possible. The connecting element preferably consists of Brass, whereby the connecting wire is preferably made of copper. This ensures good contact.

Weitere Vorteile und Einzelheiten ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels und der Zeichnung. Dabei zeigen:

FIG 1
einen Schnitt durch einen erfindungsgemäßen Drehstrom-Gießharztransformator und
FIG 2 und 3
jeweils die Verbindung eines Anschlußelements mit einem Anschlußdraht.
Further advantages and details emerge from the following description of an exemplary embodiment and the drawing. Show:
FIG. 1
a section through an inventive three-phase cast resin transformer and
2 and 3
each the connection of a connecting element with a connecting wire.

FIG 1 zeigt einen Drehstromtransformator, der drei Primärwicklungen 1 und drei Sekundärwicklungen 2 aufweist, welche jeweils paarweise konzentrisch auf den drei Säulen 3 des Transformatorkerns 4 angeordnet sind. Die Primärwicklungen 1 sind über die Anschlußdrähte 5 mit den Anschlußelementen 6 verbunden. Die Sekundärwicklungen 2 sind über die Anschlußdrähte 7 mit den Anschlußelementen 8 verbunden. An die Anschlußelemente 6 bzw. 8 sind über transformatorexterne Anschlußleitungen 9, 10 ein primärseitiges Drehstromnetz mit den Phasen R, S und T bzw. ein sekundärseitiges Drehstromnetz mit den Phasen U, V und W anschließbar.1 shows a three-phase transformer, the three primary windings 1 and three secondary windings 2, which each in pairs concentrically on the three columns 3 of the Transformer core 4 are arranged. The primary windings 1 are connected to the connecting elements 6 via the connecting wires 5 connected. The secondary windings 2 are over the connecting wires 7 connected to the connecting elements 8. On the connection elements 6 and 8 are via transformer external connecting cables 9, 10 a primary three-phase network with the phases R, S and T or a secondary three-phase network can be connected with phases U, V and W.

Wie aus FIG 1 ersichtlich ist, ist der gesamte Transformator einschließlich Transformatorkern 4, Wicklungen 1, 2, Anschlußelementen 6, 8 und Anschlußdrähten 5, 7 in Gießharz 11 eingegossen. Von außen sind also nur die Anschlußelemente 6, 8 zugänglich. Die Wicklungen können alternativ auch jeweils für sich vergossene Baueinheiten bilden, die auf einem gemeinsamen, nicht vergossenen Kern angeordnet sind.As can be seen from FIG 1, the entire transformer including transformer core 4, windings 1, 2, connection elements 6, 8 and connecting wires 5, 7 in resin 11th poured. So from the outside there are only the connecting elements 6, 8 accessible. The windings can alternatively also each form encapsulated units that are based on a common, not potted core are arranged.

Gemäß FIG 2 sind die Anschlußelemente 6, 8 als Sechskant-Eingießmuttern ausgebildet. Die Anschlußelemente 6, 8 weisen jeweils eine Gewindebohrung 12 auf, in welche eine in FIG 2 nicht näher dargestellte Schraube eindrehbar ist. Mittels einer derartigen Schraubverbindung werden die transformatorexternen Anschlußleitungen 9, 10 an den Transformator angeschlossen. Die Anschlußelemente 6, 8 weisen ferner jeweils eine Bohrung 13 auf, welche im eingegossenen Zustand der Anschlußelemente 6, 8 nach innen gerichtet ist und der Aufnahme der Anschlußdrähte 5, 7 dient.According to FIG 2, the connection elements 6, 8 are as hexagon cast nuts educated. The connection elements 6, 8 have each have a threaded bore 12, into which one in FIG. 2 Screw not shown is screwed. Means Such a screw connection becomes the transformer external Connection lines 9, 10 connected to the transformer. The connection elements 6, 8 also each have a bore 13, which in the cast state Connection elements 6, 8 is directed inwards and the Receiving the connecting wires 5, 7 is used.

Wie aus FIG 2 ersichtlich ist, weist der in die Bohrung 13 eingeführte Anschlußdraht 5 im Bereich des Anschlußelements 6 eine Aufbauchung 14 auf. Die Aufbauchung 14 kann z.B. durch Stauchen bewirkt sein. Durch die Aufbauchung 14 ist der Anschlußdraht 5 mechanisch fest und elektrisch leitend mit den Anschlußelement 6 verbunden. Die Verbindung ist sowohl gas- als auch flüssigkeitsdicht. Sie kann Zugkräfte aufnehmen und wirkt als Verdrehungsschutz.As can be seen from FIG. 2, it points into the bore 13 inserted connecting wire 5 in the area of the connecting element 6 a bulge 14 on. The bulge 14 can e.g. by Upset. Due to the bulge 14 is the Lead 5 mechanically fixed and electrically conductive with the connecting element 6 connected. The connection is both gas and liquid tight. It can absorb tensile forces and acts as a protection against twisting.

Die Aufbauchung 14 kann je nach Ausgestaltung der Bohrung 13 verschieden ausgestaltet sein. Wenn die Bohrung 13 eine einfache Bohrung ist, ist die Aufbauchung 14 am Eingang der Bohrung 13 angeordnet. Wenn die Bohrung halb offen ist oder einen Einstich aufweist, kann die Aufbauchung 14 alternativ oder zusätzlich auch im halb offenen Bereich der Bohrung 13 bzw. im Einstichsbereich der Bohrung 13 angeordnet sein.The bulge 14 can, depending on the configuration of the bore 13 be designed differently. If the bore 13 is a simple one Is bore, bulge 14 is at the entrance to the bore 13 arranged. If the hole is half open or one Has bulge, the bulge 14 can alternatively or additionally in the half-open area of the bore 13 or be arranged in the puncture area of the bore 13.

Wie aus FIG 2 ersichtlich ist, ist die Bohrung 13 axial zur Gewindebohrung 12 angeordnet, wobei sowohl die Gewindebohrung 12 als auch die Bohrung 13 außerhalb der Symmetrielinie der Eingießmutter 6, also exzentrisch, angeordnet sind. Dadurch kann die Eingießmutter 6 kompakt gehalten werden. Wie ferner aus FIG 2 ersichtlich ist, ist die Bohrung 13 im vorliegenden Fall als Sackbohrung ausgebildet. Die Bohrung 13 könnte aber ebenso als Durchgangsbohrung ausgebildet sein.As can be seen from FIG 2, the bore 13 is axially to Threaded bore 12 arranged, both the threaded bore 12 as well as the bore 13 outside the line of symmetry Pouring nut 6, that is to say eccentrically. Thereby the pouring nut 6 can be kept compact. How further 2 shows, the bore 13 is in the present Case designed as a blind hole. The bore 13 could also be designed as a through hole.

FIG 3 zeigt eine weitere Ausführungsform der Verbindung zwischen Anschlußdraht 7 und Anschlußelement 8. Der wesentliche Unterschied zur ersten Ausführungsform besteht darin, daß die Bohrung 13 nicht axial, sondern radial zur Gewindebohrung 12 angeordnet ist. Auch ist in diesem Ausführungsbeispiel die Bohrung 13 als Durchgangsbohrung ausgebildet. Sie könnte aber, so wie in FIG 2 dargestellt, auch als Sackbohrung ausgebildet sein.3 shows a further embodiment of the connection between Connection wire 7 and connection element 8. The essential The difference from the first embodiment is that the Bore 13 not axially but radially to the threaded bore 12 is arranged. In this embodiment, too Bore 13 formed as a through hole. You could but, as shown in FIG. 2, also as a blind hole be trained.

Obenstehend beschriebene Erfindung ist besonders vorteilhaft dann, wenn das Anschlußelement 6, 8 aus Messing besteht und der Anschlußdraht 5, 7 aus Kupfer. Insbesondere bei dieser Kombination ist nämlich bei Lötungen Flußmittel erforderlich, was sich nur unter großem Arbeitsaufwand wieder entfernen läßt. Andere Arbeitsverfahren wie beispielsweise Schweißen oder Quetschen sind dagegen aus anderen technischen Gründen nicht möglich.The invention described above is particularly advantageous when the connecting element 6, 8 consists of brass and the connecting wire 5, 7 made of copper. Especially with this one Combination is required for soldering flux, which can only be removed with great effort leaves. Other working methods such as welding or squeezing are against it for other technical reasons not possible.

Insbesondere bei der Kombination "Messing für Eingießmutter und Kupfer für Anschlußdraht" ermöglicht die vorliegende Erfindung daher eine große Kostenersparnis. Es sind aber auch andere Materialkombinationen, z.B. in Verbindung mit Aluminium, möglich. Selbstverständlich sind die oben beschrieben Merkmale beliebig im Rahmen des fachmännischen Könnens kombinierbar, ohne daß der Weg der vorliegenden Idee verlassen wird.Especially with the combination "brass for casting nut and copper for lead wire "enables the present Invention is therefore a great cost savings. But there are also other material combinations, e.g. in connection with aluminum, possible. Of course, they are described above Any characteristics within the scope of professional skill can be combined without leaving the path of the present idea becomes.

Claims (8)

  1. Cast-resin transformer having
    at least one primary winding (1),
    at least one secondary winding (2),
    at least one connection element (6, 8), which is cast in as well and is used for the connection, for example by means of a screwed connection, of a connecting lead (9, 10) which is outside the transformer, and has a bore (13) for receiving a transformer-side connecting wire (5, 7), and
    a connecting wire (5, 7) which conductively connects the primary winding (1) or the secondary winding (2) to the connection element (6, 8),
       with the connecting wire (5, 7) being inserted into the bore (13) of the connection element (6, 8),
       characterised in that the connecting wire (5, 7) has at the entrance of the bore (13), in a half open region of the bore (13), or in a recess region of the bore (13), a deformation in the form of a bulge (14), with the bulge (14) forming an electrically conductive, mechanically secure connection to the connection element (6,8).
  2. Cast-resin transformer according to claim 1, characterised in that the bulge (14) is a compression bulge.
  3. Cast-resin transformer according to claim 1 or 2, characterised in that the bore (13) is constructed as a blind bore (13).
  4. Cast-resin transformer according to claim 1 or 2, characterised in that the bore (13) is constructed as a through-bore (13).
  5. Cast-resin transformer according to one of the above claims, characterised in that the connection element (6, 8) has a threaded bore (12) for receiving a screw for the connection of the connecting lead (9, 10), and in that the bore (13) is arranged radially with respect to the threaded bore (12).
  6. Cast-resin transformer according to one of the claims 1 to 5, characterised in that the connection element (6, 8) has a threaded bore (12) for receiving a screw for the connection of the connecting lead (9, 10), and in that the bore (13) is arranged axially with respect to the threaded bore (12).
  7. Cast-resin transformer according to claim 7, characterised in that the threaded bore (12) and/or the bore (13) are arranged eccentrically.
  8. Cast-resin transformer according to one of the preceding claims, characterised in that the connection element (6, 8) consists of brass and/or the connecting wire (5, 7) consists of copper.
EP95116433A 1994-10-28 1995-10-18 Transformer encapsulated in cast resin Expired - Lifetime EP0709864B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4438653 1994-10-28
DE4438653A DE4438653C1 (en) 1994-10-28 1994-10-28 Cast resin transformer

Publications (3)

Publication Number Publication Date
EP0709864A2 EP0709864A2 (en) 1996-05-01
EP0709864A3 EP0709864A3 (en) 1996-06-05
EP0709864B1 true EP0709864B1 (en) 1999-01-13

Family

ID=6531985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95116433A Expired - Lifetime EP0709864B1 (en) 1994-10-28 1995-10-18 Transformer encapsulated in cast resin

Country Status (4)

Country Link
EP (1) EP0709864B1 (en)
AT (1) ATE175806T1 (en)
DE (2) DE4438653C1 (en)
ES (1) ES2127451T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011013684B4 (en) * 2011-03-11 2019-09-12 Reo Ag Electrical component with at least one arranged in a potting electrical power loss source and a cooling device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE406685C (en) * 1923-09-13 1925-07-16 Wolfgang Bauer Terminal for electrical lines
US3838372A (en) * 1971-10-29 1974-09-24 Motorola Inc Magnetic pickup assembly
DE2904746C3 (en) * 1979-02-08 1985-01-24 Smit Transformatoren B.V., Nijmegen Winding for an air-cooled dry-type transformer
DE3743222A1 (en) * 1987-12-19 1989-06-29 Asea Brown Boveri Cooled inductor coil for converter installations
DE9114654U1 (en) * 1991-11-25 1992-04-30 Elektro-Kern Gmbh & Co Kg, 7990 Friedrichshafen, De

Also Published As

Publication number Publication date
DE4438653C1 (en) 1996-06-20
EP0709864A3 (en) 1996-06-05
EP0709864A2 (en) 1996-05-01
DE59504800D1 (en) 1999-02-25
ATE175806T1 (en) 1999-01-15
ES2127451T3 (en) 1999-04-16

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