[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP0236974B1 - Combined current and voltage transformer for a high-voltage installation - Google Patents

Combined current and voltage transformer for a high-voltage installation Download PDF

Info

Publication number
EP0236974B1
EP0236974B1 EP87103201A EP87103201A EP0236974B1 EP 0236974 B1 EP0236974 B1 EP 0236974B1 EP 87103201 A EP87103201 A EP 87103201A EP 87103201 A EP87103201 A EP 87103201A EP 0236974 B1 EP0236974 B1 EP 0236974B1
Authority
EP
European Patent Office
Prior art keywords
transformer
hood
combined
current transformer
voltage
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
EP87103201A
Other languages
German (de)
French (fr)
Other versions
EP0236974A2 (en
EP0236974A3 (en
Inventor
Norbert Dipl.-Ing. Preissinger (Fh)
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.)
Trench Germany GmbH
Original Assignee
MWB Messwandler Bau 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
Priority claimed from DE19863608389 external-priority patent/DE3608389A1/en
Priority claimed from DE19863608390 external-priority patent/DE3608390A1/en
Priority claimed from DE19863608388 external-priority patent/DE3608388A1/en
Application filed by MWB Messwandler Bau AG filed Critical MWB Messwandler Bau AG
Priority to AT87103201T priority Critical patent/ATE76999T1/en
Publication of EP0236974A2 publication Critical patent/EP0236974A2/en
Publication of EP0236974A3 publication Critical patent/EP0236974A3/en
Application granted granted Critical
Publication of EP0236974B1 publication Critical patent/EP0236974B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20Instruments transformers
    • H01F38/22Instruments transformers for single phase ac
    • H01F38/34Combined voltage and current transformers
    • H01F38/36Constructions
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias

Definitions

  • the present invention relates to a combined high-voltage current and voltage converter in head design according to the preamble of claim 1.
  • the feed-through conductor forming the primary conductor of the current transformer is arranged horizontally and is passed laterally through the hood forming the head of the current transformer.
  • at least one of the two bushings is designed to be electrically insulating.
  • the hood is usually divided lengthways, that is to say it has two shells (cf. DE-A-27 28 191).
  • Such a design of a hood thus has not only three openings, which must be tightly sealed during assembly for later filling with insulating liquid or with pressurized insulating gas, but also the longitudinal dividing line to be sealed.
  • the object of the present invention is to provide a combined high-voltage current and voltage converter at the beginning Form mentioned type so that a simple manufacture of the head housing and a good seal is made possible with the least possible sealable bushings within the head housing.
  • both the primary conductor of the current transformer and the secondary system of the current and active parts of the voltage transformer should be easy to install.
  • all lateral openings in the hood are eliminated.
  • the hood is completely relieved of the weight of the secondary system of the current transformer and only has to bear the lower weight of the voltage transformer.
  • the hood can therefore be made of much thinner material, possibly even in one piece using the deep-drawing process, and thus can be manufactured much more cheaply and easily.
  • all current transformer parts can also be preassembled on the end plate and the voltage transformer in the hood, and the units preassembled in this way can be placed on the insulating column (support) or on the end plate and fastened there.
  • a controlled foil feedthrough in the through opening of the secondary system can also be dispensed with. So you get by with a uniform insulating medium, especially with an inert insulating gas, such as sulfur hexafluoride, or insulating oil.
  • a head-mounted high-voltage current transformer in particular under the usual excess pressure of an inert insulating gas, such as sulfur hexafluoride, which essentially consists of a column made of insulating material (supports), such as porcelain, epoxy resin or a composite insulator made of a GRP tube with cast-on silicone fins , consists of a base part 3 supporting the insulating column 2 and the head part 4 containing the active parts of the current and voltage converter.
  • an outlet pipe 5 is arranged coaxially to the latter, in which the secondary outlet pipes 6 run and are guided to the secondary terminals in the foot part 3.
  • a potential control device in particular potential control winding, can be provided in a manner known per se.
  • an end plate 8 is insulated, ie oil or gas-tight. It has a collar 9 projecting downwards, which engages over the insulating column 2 from the outside.
  • An inner support edge 10 lies on the end face 11 of the insulating column 2 with the interposition of a seal 12.
  • the discharge pipe 5 is inserted in a secondary system 16, which preferably consists of a plurality of toroidal cores 13 with associated secondary windings and a cast resin sheathing 15 forming a ring 14.
  • the latter is exclusively attached to the end plate 8 by means of insulating supports 17. These supports 17 are advantageously arranged at an angle to the outside and are expediently attached centrally to the discharge pipe 5.
  • the primary conductor 18 is exclusively attached to the end plate 8. This is U-shaped, the base 19 of which passes through the ring 14 or the cores 13 at least approximately centrally, the one leg 20 being fastened in this by means of a connecting section 22 which is guided through the bore 100 of the end plate 8 so as to be insulating-tight.
  • An outer flange 23 attached to the leg 20 serves as a support. This leg can be contacted from the outside, ie from below the end plate 8.
  • the connecting section 22 is secured by an insulating sleeve 47 and an insulating ring 48, which may consist of one piece with the insulating sleeve 47, and is insulated and insulated.
  • the other leg 21 is attached from the inside by means of the outer flange 23 on the inside 101 of the end plate 8, in particular screwed on. There are no holes through to the outside, so that no seals are required.
  • the connection is made via an externally attached connection 106, so that the entire head 4 is at this potential connected there. It is therefore a non-switchable primary conductor 18.
  • the end plate 8 is designed such that it projects laterally on all sides of all active parts, that is to say the secondary system 16 and the primary conductor 18.
  • it has a tub or plate shape.
  • a hood 24 designed as a head housing is placed over these aforementioned parts from above.
  • a flange 27 is provided with which the hood 24 can be screwed tightly onto the end plate 8 by means of screw connections 28.
  • the hood 24 can consist of a tube section 29 and a hood-shaped or pot-shaped cover 30, which are sealed at the joint 31 in an insulating-tight manner, are soldered or welded or screwed, for example flanged, in the case of a metal design, and are, for example, in the case of a GRP (glass fiber reinforced plastic) design the joint 31 are overlapped.
  • the hood 24 can also consist of a single drawn or pressed part or molded part.
  • the secondary discharges are led out at the periphery 32 at a reinforced diversion point 33, into which the diversion pipe 5 is inserted.
  • the ring 14 is preferably metallized on the outside, for example with spray galvanizing. As usual, this metal covering is connected to earth potential.
  • At least three supports 17 are provided.
  • the supports 17 for the ring 14 can also be integrally formed on the ring 14, that is to say they can be cast in one piece from casting resin. But they can also be molded with suitable approaches or releasably connected to the ring 14.
  • the arrangement of an individual support 17 on the ring 14 can be such that a threaded part 43 designed as a threaded sleeve or threaded bolt is molded into the cast resin sheathing 15 and the supports 17 can be screwed to the latter by means of a counter-threaded part 44 molded therein (FIG. 2).
  • connection between the diversion point 33 and the diversion pipe 5 is designed mechanically as a longitudinally displaceable plug connection.
  • the upper end of the diversion tube 5 is coaxially surrounded and held resiliently in the manner of a sliding fit by one or more contact springs 45, for example as ring contact springs arranged in the ring around the diversion tube 5, preferably as a multiply slotted collar.
  • Each abutment 102 expediently has a support plate 103 for each support 17, the support surface 35 of which is preferably arranged perpendicular to the longitudinal axis L of the associated supports 17.
  • the support plates 103 are provided with a bore 104 through which a screw shaft 37 of a fastening screw 38 can be pushed through from below and is screwed to a threaded part of the support 17 designed as a threaded bushing 39.
  • the support plates 103 can be one leg of an angle rail, the other leg of which is attached to the end plate 8, for example by screws from the inside.
  • a support plate 103 is advantageously provided on each side of a prism 105, this prism 105 being integrally formed on or attached to the end plate 8.
  • This type of support attachment within the space of the hood 24 avoids that 8 holes have to be provided in the end plate and sealed in an insulating-tight manner.
  • a voltage converter 200 is provided over the secondary system 16 or over its cast resin sheathing 15. It is arranged within the one- or in particular two-part hood 24 and fastened in it to at least two fastening tabs 201 provided there or to a partial or an annular flange.
  • the cover 30 is preferably designed as a dome and connected to a lower cylindrical section, for example the pipe section 29, in an insulating-tight manner, in particular screwed.
  • a plug device 202 is attached at the bottom of the voltage converter 200, preferably screwed on or in particular molded onto the cast resin sheathing 203 of the high and low voltage windings 200.1, 200.2. This is preferably a multiple plug device for the secondary rejects of the voltage converter 200, so that a voltage converter 200 with a plurality of connections is thus provided.
  • a plug device counterpart 203 is rigidly fastened in the lower part of the hood 24 or the head 4, for example screwed to it.
  • the plug device counterpart 203 is attached to the secondary system 16 of the current transformer at the top, for example screwed on or molded on.
  • open outlet lines which are molded on the outside, in particular along the cast resin sheathing 15 or cheaper, or molded into it by means of cast resin, and are led into the discharge pipe 5. In the latter they are led to the clipboard in foot 3 of the converter.
  • the plug connection 202, 204 is designed such that the individual devices 202, 204 are axially displaceable relative to one another in the assembled state, but remain securely connected.
  • the arrangement can be such that the assembly of the plug device parts 202, 204 takes place directly and automatically or indirectly via intermediate connecting elements when the hood 24 is put on.
  • the division of the hood 24 is expediently arranged in an area 205 between the feedthrough conductor, that is to say the base 19 of the primary conductor 18 and the leg 206 of the magnetic core 207 passing through the windings 200.1 and 200.2 of the voltage converter 200.
  • this leg 206 is below and the non-winding Leg 208 arranged above.
  • the magnetic core 207 or 207.1 and the beginning of the internal high-voltage winding 200.1 are at high-voltage potential.
  • the dome 30 is adapted to the dimensions of the voltage converter 200 and it can usually be at least smaller in diameter around it than the remaining section of the hood 24. This possibility arises when the magnetic core 207 is designed as a frame core according to FIG. 4.
  • the magnetic core can advantageously be designed as a jacket core 207.1. This is preferably arranged in the horizontal plane. This results in a lower design and the diameter of the dome 30 must at least not be greater than that of the cylindrical section 29.
  • the magnetic core 207 or 207.1 is attached directly or indirectly to the transducer head 4 via angular or U-shaped sections 211.
  • the plug connection can be brought together in the direction of rotation without difficulty in an exact angular position, the plug devices 202 and 204 and / or on the hood 24 or on the dome 30 and on the end plate 8 or on the pipe section 29 and / or on the cast resin casings 15 and 203 coding elements 209 and counterparts 210, for example in the form of tongue and groove or pins 209.1 and bores 210.1 or the like. In this way, incorrect connection of the voltage converter 200 can be avoided in principle.
  • the primary conductor 18 of the current transformer 16, 18 can consist of two or more parts consist, for example, of an angle and one leg or of a base and two legs. At an angle, the one angle leg forms the base 19 to which the leg 20 or 21 is attached.
  • This type of design allows easy installation, especially with small core or ring inner diameters.
  • the legs 20, 21 are attached at an obtuse angle to a right angle at the ends of the rod-shaped base 19.
  • the legs 20, 21 can be designed as bolts.
  • the isolation of the leg or legs 20 and / or 21 is advantageously carried out via an insulating sleeve and a ring, which is preferably a flange of the insulating sleeve, which are attached tightly in the end plate 8, for example by pouring or by means of ring seals or the like.
  • the ring or flange is screwed tightly on the one hand to the outer flange 23 of the legs 20, 21 and on the other hand to the end plate 8.
  • the primary conductor 18 is designed as a coaxial double conductor in which two U-shaped conductors which are insulated from one another are provided.
  • One preferably consists of an outer conductor 50 and the other of an inner conductor 51. These are separated and fixed in position by suitable insulation paths which are at least partially separated from one another by a solid dielectric 52, such as cast resin.
  • the dielectric 52 is provided at least in the region of the connection sections 22 and thus seals at the same time.
  • the outer conductor 50 of one leg 20 is arranged insulated from the end plate 8 by an insulating bush and the outer conductor 50 of the other leg 21 is conductively connected to the end plate 8, for example directly attached therein without insulation.
  • the outer conductors 50 of the legs 20, 21 have an outer flange 23.
  • the inner conductors 51 of the legs 20, 21 are guided to the outside in an insulated manner, and connection contacts 53, for example by means of a clamp 54, can be pivoted accordingly. The same can be provided on the insulated outer conductor 50 of the leg 20.
  • This configuration of the primary conductor 18 as a double conductor makes it possible to use the two conductors separately or to connect them in series or in parallel. It is therefore possible to switch over in a ratio of 1: 2 or, in the case of parallel connection, the primary conductor can be used for a higher current load.
  • each of the two coaxial conductors can also carry a separate measuring current.
  • the parallel connection takes place by interconnecting the inner conductor 50 and the outer conductor 51 of the leg 20 and the leg 21.
  • connection contacts 53 to the left outer conductor 50, by electrically connecting the outer flange 23 to the electrically conductive end plate 8, by a further electrical connection of the end plate 8 via a further connection contact 53 to the left inner conductor 51, with the right one Connection section 22 is further contacted with the right terminal contact 53.
  • Clamp clamps 54 can also be used to connect the base 19 of the primary conductor 18 to the legs 20, 21. These can be made from the tubular or solid material of the legs 20, 21 or from the base 19, both in the outer conductors 50 and in the Inner conductors 51, be made. This can be done by appropriate shaping and / or machining. The conductor part 55 to be clamped can be reduced in diameter.
  • the outer conductor 50 of the legs 20, 21 has a bore in the area 56 of the inner conductor 51 of the base 19.
  • connection of the outer conductors 50 from the base 19 to the legs 20, 21 takes place in each case via a flange 59 which is attached to the ends 19 of the outer conductor 50 on the base 19 and with which the ends 60 of the outer conductors 50 of the legs protrude somewhat inside the head housing 24 20, 21 are screwed.
  • Shields 212 are advantageously attached to all inner surfaces of the jacket core 207. These can also form a common framework. They are advantageously rounded at the end 213 which points downward to the ring 14 of the current transformer 16, 18, and are rounded downwards.
  • the sheath core 207 in the direction of the feed-through conductor 19 of the current transformer primary conductor 18.
  • the feed-through conductor 19 can penetrate the entire head 4 horizontally, protruding from the hood 24 on both sides and being electrically insulated from it at least on one side. But it can also have the U-shape described. If necessary, it can also consist of two parallel strands, so that it can be switched. One of the two strands is then attached to each leg in an electrically insulated manner from the end plate.
  • the use of the current transformer part with a switchable primary winding of the combined transformer according to the invention is particularly advantageous if the voltage transformer part is disconnected via the plug device 202, 204 and this transformer is then operated as a pure current transformer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)

Description

Die vorliegende Erfindung bezieht sich auf einen kombinierten Hochspannungsstrom- und -spannungswandler in Kopfbauweise gemäß dem Oberbegriff des Anspruches 1.The present invention relates to a combined high-voltage current and voltage converter in head design according to the preamble of claim 1.

Bei vorbekannten Stromwandlern ist es grundsätzlich bekannt, daß der den Primärleiter des Stromwandlers bildende Durchführungsleiter waagrecht angeordnet und durch die den Kopf des Stromwandlers bildende Haube seitlich hindurchgeleitet ist. Hierbei ist wenigstens eine der beiden Durchführungen elektrischisolierend ausgebildet. Bei Hochspannungsstromwandlern dieser Art ist dabei die Haube üblicherweise längsgeteilt, also zweischalig ausgebildet (vgl. DE-A-27 28 191).In prior art current transformers, it is known in principle that the feed-through conductor forming the primary conductor of the current transformer is arranged horizontally and is passed laterally through the hood forming the head of the current transformer. Here, at least one of the two bushings is designed to be electrically insulating. In the case of high-voltage current transformers of this type, the hood is usually divided lengthways, that is to say it has two shells (cf. DE-A-27 28 191).

Eine derartige Ausführung einer Kopfhaube besitzt also nicht nur drei Öffnungen, die bei der Montage zwecks späterer Füllung mit Isolierflüssigkeit oder mit unter Druck stehendem Isoliergas dicht verschlossen sein müssen, sondern darüber hinaus noch die abzudichtende Längstrennlinie.Such a design of a hood thus has not only three openings, which must be tightly sealed during assembly for later filling with insulating liquid or with pressurized insulating gas, but also the longitudinal dividing line to be sealed.

Aufgabe der vorliegenden Erfindung ist es, einen kombinierten Hochspannungsstrom- und -spannungswandler der eingangs erwähnten Art so auszubilden, daß eine einfache Herstellung des Kopfgehäuses und eine gute Abdichtung mit möglichst wenig abzudichtenden Durchführungen innerhalb des Kopfgehäuses ermöglicht wird. Gleichzeitig sollen sowohl der Primärleiter des Stromwandlers als auch das Sekundärsystem des Strom- und die Aktivteile des Spannungswandlers einfach montierbar sein.The object of the present invention is to provide a combined high-voltage current and voltage converter at the beginning Form mentioned type so that a simple manufacture of the head housing and a good seal is made possible with the least possible sealable bushings within the head housing. At the same time, both the primary conductor of the current transformer and the secondary system of the current and active parts of the voltage transformer should be easy to install.

Diese Aufgabe wird durch die im Kennzeichen des Anspruches 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of claim 1.

Bei der erfindungsgemäßen Ausgestaltung eines kombinierten Wandlers in Kopfbauweise entfallen sämtliche seitlichen Öffnungen in der Kopfhaube. Die Kopfhaube ist vom Gewicht des Sekundärsystems des Stromwandlers vollkommen entlastet und muß nur das geringere Gewicht des Spannungswandlers tragen. Es kann daher die Kopfhaube aus wesentlich dünnerem Material, gegebenenfalls sogar einteilig im Tiefziehverfahren, und damit wesentlich kostengünstiger und leichter hergestellt werden. Durch die erfindungsgemäße Ausgestaltung können außerdem alle Stromwandlerteile auf der Abschlußplatte und der Spannungswandler in der Haube vormontiert werden und die so vormontierten Einheiten auf die Isoliersäule (Stützer) bzw. auf die Abschlußplatte aufgesetzt und dort befestigt werden. Auch kann eine gesteuerte Foliendurchführung in der Durchgangsöffnung des Sekundärsystems, wie sie häufig üblich ist, entfallen. Man kommt also mit einem einheitlichen Isoliermedium, insbesondere mit inertem Isoliergas, wie Schwefelhexafluorid, oder auch Isolieröl, aus.In the embodiment according to the invention of a combined transducer in a head design, all lateral openings in the hood are eliminated. The hood is completely relieved of the weight of the secondary system of the current transformer and only has to bear the lower weight of the voltage transformer. The hood can therefore be made of much thinner material, possibly even in one piece using the deep-drawing process, and thus can be manufactured much more cheaply and easily. With the design according to the invention, all current transformer parts can also be preassembled on the end plate and the voltage transformer in the hood, and the units preassembled in this way can be placed on the insulating column (support) or on the end plate and fastened there. A controlled foil feedthrough in the through opening of the secondary system, as is often the case, can also be dispensed with. So you get by with a uniform insulating medium, especially with an inert insulating gas, such as sulfur hexafluoride, or insulating oil.

Weitere vorteilhafte Einzelheiten der Erfindung sind in den Unteransprüchen angegeben und werden nachfolgend anhand von in der Zeichnung veranschaulichten Ausführungsbeispielen näher beschrieben.Further advantageous details of the invention are specified in the subclaims and are described below on the basis of exemplary embodiments illustrated in the drawing described in more detail.

Dabei zeigen:

Fig. 1
einen kombinierten Hochspannungsstrom- und -spannungswandler gemäß der Erfindung von der Seite im Längsschnitt,
Fig. 2
den kombinierten Wandler gemäß Figur 1 in einer um die Längsachse um 90o gedrehten Ansicht im Schnitt,
Fig. 3
eine Ansicht der Haube gemäß dem Schnitt A-B der Fig. 1,
Fig. 4
einen oberen Haubenabschnitt mit einem Spannungswandler mit Mantelkern,
Fig. 5
den Stromwandlerteil des kombinierten Wandlers mit einer umschaltbaren Primärwicklung,
Fig. 6
einen Längsschnitt durch eine abgeänderte Ausführungsform eines kombinierten Wandlers gemäß der Erfindung und
Fig. 7
eine Draufsicht auf den Wandler gemäß Fig. 6 in der Schnittebene A-B der Figur 6 gesehen.
Show:
Fig. 1
a combined high-voltage current and voltage converter according to the invention from the side in longitudinal section,
Fig. 2
the combined converter according to Figure 1 in a about the longitudinal axis through 90 o rotated view in section,
Fig. 3
2 shows a view of the hood according to section AB of FIG. 1,
Fig. 4
an upper hood section with a voltage converter with a jacket core,
Fig. 5
the current transformer part of the combined transformer with a switchable primary winding,
Fig. 6
a longitudinal section through a modified embodiment of a combined converter according to the invention and
Fig. 7
a plan view of the converter according to FIG. 6 seen in the section plane AB of Figure 6.

Mit 1 ist ein insbesondere unter dem üblichen Überdruck eines inerten Isoliergases, wie Schwefelhexafluorid, stehender Hochspannungsstromwandler in Kopfbauweise bezeichnet, der im wesentlichen aus einer Säule aus Isoliermaterial (Stützer), wie Porzellan, Epoxydharz oder aus einem Verbundisolator aus einem GFK-Rohr mit angegossenen Silikonrippen, aus einem die Isoliersäule 2 tragenden Fußteil 3 und die Aktivteile des Strom- und Spannungswandlers enthaltenden Kopfteil 4 besteht. In der Säule 2 aus Isoliermaterial ist ein Ausleitungsrohr 5 koaxial zu dieser angeordnet, in dem die Sekundärausleitungen 6 verlaufen und zu den Sekundärklemmen im Fußteil 3 geführt sind. Zwischen dem Ausleitungsrohr 5 und der Säule 2 kann in an sich bekannter Weise eine Potentialsteuereinrichtung, insbesondere Potentialsteuerwicklung, vorgesehen sein.1 denotes a head-mounted high-voltage current transformer, in particular under the usual excess pressure of an inert insulating gas, such as sulfur hexafluoride, which essentially consists of a column made of insulating material (supports), such as porcelain, epoxy resin or a composite insulator made of a GRP tube with cast-on silicone fins , consists of a base part 3 supporting the insulating column 2 and the head part 4 containing the active parts of the current and voltage converter. In the column 2 made of insulating material, an outlet pipe 5 is arranged coaxially to the latter, in which the secondary outlet pipes 6 run and are guided to the secondary terminals in the foot part 3. Between the diversion pipe 5 and the column 2, a potential control device, in particular potential control winding, can be provided in a manner known per se.

Am oberen Ende 7 der Isoliersäule 2 ist eine Abschlußplatte 8 isoliermitteldicht, also öl- oder gasdicht, befestigt. Sie besitzt einen nach unten ragenden Kragen 9, der die Isoliersäule 2 von außen übergreift. Ein innerer Auflagerand 10 liegt auf der Stirnfläche 11 der Isoliersäule 2 unter Zwischenlage einer Dichtung 12 auf.At the upper end 7 of the insulating column 2, an end plate 8 is insulated, ie oil or gas-tight. It has a collar 9 projecting downwards, which engages over the insulating column 2 from the outside. An inner support edge 10 lies on the end face 11 of the insulating column 2 with the interposition of a seal 12.

Das Ausleitungsrohr 5 steckt in einem vorzugsweise aus mehreren Ringkernen 13 mit zugehörigen Sekundärwicklungen und einer einen Ring 14 bildenden Gießharzumhüllung 15 bestehenden Sekundärsystem 16. Letzteres ist über isolierende Stützer 17 ausschließlich auf der Abschlußplatte 8 befestigt. Diese Stützer 17 sind vorteilhaft schräg nach außen verlaufend angeordnet und zweckmäßig zentrisch zum Ausleitungsrohr 5 angebracht. Außerdem ist auf der Abschlußplatte 8 der Primärleiter 18 ausschließlich befestigt. Dieser ist U-förmig ausgebildet, wobei dessen Basis 19 den Ring 14 bzw. den ober die Kerne 13 zumindest annähernd zentrisch durchsetzt, wobei der eine Schenke, 20 mittels eines durch die Bohrung 100 der Abschlußplatte 8 isoliermitteldicht hindurchgeführten Anschlußabschnittes 22 in dieser befestigt ist. Als Auflager dient dabei ein an dem Schenkel 20 angebrachter Außenflansch 23. Dieser Schenkel ist von außen, d.h. von unterhalb der Abschlußplatte 8 her, kontaktierbar. Der Anschlußabschnitt 22 ist dabei durch eine Isolierbuchse 47 und einen isolierenden Ring 48, der mit der Isolierbuchse 47 aus einem Stück bestehen kann, isoliermitteldicht und isoliert befestigt. Der andere Schenkel 21 ist von innen mittels des Außenflansches 23 auf der Innenseite 101 der Abschlußplatte 8 befestigt, insbesondere aufgeschraubt. Dabei sind keine nach außen durchgehenden Bohrungen vorgesehen, so daß keine Dichtungen erforderlich sind. Der Anschluß erfolgt über einen außen angebrachten Anschluß 106, so daß der ganze Kopf 4 auf diesem dort angeschlossenen Potential liegt. Es handelt sich also hierbei um einen nicht umschaltbaren Primärleiter 18.The discharge pipe 5 is inserted in a secondary system 16, which preferably consists of a plurality of toroidal cores 13 with associated secondary windings and a cast resin sheathing 15 forming a ring 14. The latter is exclusively attached to the end plate 8 by means of insulating supports 17. These supports 17 are advantageously arranged at an angle to the outside and are expediently attached centrally to the discharge pipe 5. In addition, the primary conductor 18 is exclusively attached to the end plate 8. This is U-shaped, the base 19 of which passes through the ring 14 or the cores 13 at least approximately centrally, the one leg 20 being fastened in this by means of a connecting section 22 which is guided through the bore 100 of the end plate 8 so as to be insulating-tight. An outer flange 23 attached to the leg 20 serves as a support. This leg can be contacted from the outside, ie from below the end plate 8. The connecting section 22 is secured by an insulating sleeve 47 and an insulating ring 48, which may consist of one piece with the insulating sleeve 47, and is insulated and insulated. The other leg 21 is attached from the inside by means of the outer flange 23 on the inside 101 of the end plate 8, in particular screwed on. There are no holes through to the outside, so that no seals are required. The connection is made via an externally attached connection 106, so that the entire head 4 is at this potential connected there. It is therefore a non-switchable primary conductor 18.

Die Abschlußplatte 8 ist so ausgebildet, daß sie alle aktiven Teile, also das Sekundärsystem 16 und den Primärleiter 18 allseitig seitlich überragt. Beispielsweise besitzt sie Wannen- oder Tellerform. Über diese vorgenannten Teile ist von oben eine als Kopfgehäuse ausgebildete Haube 24 gestülpt. An dem die Haubenöffnung 25 begrenzenden Rand 26 ist ein Flansch 27 vorgesehen, mit dem die Haube 24 auf die Abschlußplatte 8 über Schraubenverbindungen 28 dicht aufgeschraubt werden kann. Die Haube 24 kann aus einem Rohrabschnitt 29 und aus einem hauben- oder topfförmigen Deckel 30 bestehen, die an der Stoßstelle 31 isoliermitteldicht verschlossen, bei Metallausführung verlötet oder verschweißt oder verschraubt, beispielsweise angeflanscht, sind und beispielsweise bei GFK-Ausführung (glasfaserverstärkter Kunststoff) an der Stoßstelle 31 überlappt sind. Die Haube 24 kann auch aus einem einzigen Zieh- oder Preßteil oder Formteil bestehen.The end plate 8 is designed such that it projects laterally on all sides of all active parts, that is to say the secondary system 16 and the primary conductor 18. For example, it has a tub or plate shape. A hood 24 designed as a head housing is placed over these aforementioned parts from above. On the edge 26 delimiting the hood opening 25, a flange 27 is provided with which the hood 24 can be screwed tightly onto the end plate 8 by means of screw connections 28. The hood 24 can consist of a tube section 29 and a hood-shaped or pot-shaped cover 30, which are sealed at the joint 31 in an insulating-tight manner, are soldered or welded or screwed, for example flanged, in the case of a metal design, and are, for example, in the case of a GRP (glass fiber reinforced plastic) design the joint 31 are overlapped. The hood 24 can also consist of a single drawn or pressed part or molded part.

Am Ring 14 des Sekundärsystems 16 sind am Umfang 32 unten die Sekundärausleitungen an einer verstärkten Ausleitungsstelle 33 herausgeführt, in die das Ausleitungsrohr 5 eingeführt ist. Der Ring 14 ist vorzugsweise außen metallisiert, beispielsweise mit einer Spritzverzinkung. Dieser Metallbelag wird - wie üblich - auf Erdpotential gelegt.On the ring 14 of the secondary system 16, the secondary discharges are led out at the periphery 32 at a reinforced diversion point 33, into which the diversion pipe 5 is inserted. The ring 14 is preferably metallized on the outside, for example with spray galvanizing. As usual, this metal covering is connected to earth potential.

Es sind wenigstens drei Stützer 17 vorgesehen. Die Stützer 17 für den Ring 14 können am Ring 14 selbst mit angeformt, also aus Gießharz in einem Stück gegossen sein. Sie können aber auch mit geeigneten Ansätzen eingeformt oder mit dem Ring 14 lösbar verbunden sein.At least three supports 17 are provided. The supports 17 for the ring 14 can also be integrally formed on the ring 14, that is to say they can be cast in one piece from casting resin. But they can also be molded with suitable approaches or releasably connected to the ring 14.

Die Anordnung eines Einzelstützers 17 am Ring 14 kann so erfolgen, daß in die Gießharzumhüllung 15 je ein als Gewindehülse oder Gewindebolzen ausgebildetes Gewindeteil 43 eingeformt ist und die Stützer 17 mittels eines in diesen eingeformten Gegengewindeteils 44 mit diesem verschraubbar sind (Fig. 2).The arrangement of an individual support 17 on the ring 14 can be such that a threaded part 43 designed as a threaded sleeve or threaded bolt is molded into the cast resin sheathing 15 and the supports 17 can be screwed to the latter by means of a counter-threaded part 44 molded therein (FIG. 2).

Um beim Betrieb eine bei Temperaturänderungen mögliche unterschiedliche Längenausdehnung der Isoliersäule 2 und des Ausleitungsrohres 5 auszugleichen und auch um die Montage des Sekundärsystems 16 auf dem Ausleitungsrohr 5 zu vereinfachen, ist die Verbindung zwischen der Ausleitungsstelle 33 und dem Ausleitungsrohr 5 mechanisch als längsverschiebbare Steckverbindung ausgebildet. Das obere Ende des Ausleitungsrohres 5 ist dabei nach Art eines Gleitsitzes von einer oder mehreren Kontaktfedern 45, beispielsweise als im Ring um das Ausleitungsrohr 5 angeordnete Ringkontaktfedern, vorzugsweise als mehrfach geschlitzter Kragen, koaxial umgeben und federnd gehalten.In order to compensate for a possible different length expansion of the insulating column 2 and the diversion pipe 5 during operation and also to simplify the assembly of the secondary system 16 on the diversion pipe 5, the connection between the diversion point 33 and the diversion pipe 5 is designed mechanically as a longitudinally displaceable plug connection. The upper end of the diversion tube 5 is coaxially surrounded and held resiliently in the manner of a sliding fit by one or more contact springs 45, for example as ring contact springs arranged in the ring around the diversion tube 5, preferably as a multiply slotted collar.

An der Abschlußplatte 8 sind auf deren Innenseite 101 Widerlager 102 angeformt oder befestigt, insbesondere angeschraubt. Jedes Widerlager 102 weist zweckmäßig je Stütze 17 eine Auflageplatte 103 auf, deren Auflagefläche 35 vorzugsweise senkrecht zur Längsachse L der zugeordneten Stützer 17 angeordnet sind. Die Auflageplatten 103 sind mit einer Bohrung 104 versehen, durch die hindurch von unten ein Schraubenschaft 37 einer Befestigungsschraube 38 hindurchgesteckt werden kann und mit einem als Gewindebuchse 39 ausgebildeten Gewindeteil des Stützers 17 verschraubt ist.At the end plate 8 101 abutments 102 are formed or fastened, in particular screwed, on the inside thereof. Each abutment 102 expediently has a support plate 103 for each support 17, the support surface 35 of which is preferably arranged perpendicular to the longitudinal axis L of the associated supports 17. The support plates 103 are provided with a bore 104 through which a screw shaft 37 of a fastening screw 38 can be pushed through from below and is screwed to a threaded part of the support 17 designed as a threaded bushing 39.

Die Auflagenplatten 103 können der eine Schenkel einer Winkelschiene sein, deren anderer Schenkel auf der Abschlußplatte 8, beispielsweise durch Schrauben von innen befestigt ist.The support plates 103 can be one leg of an angle rail, the other leg of which is attached to the end plate 8, for example by screws from the inside.

Vorteilhaft ist je eine Auflageplatte 103 auf jeder Seite eines Prismas 105 vorgesehen, wobei dieses Prisma 105 an der Abschlußplatte 8 angeformt oder an dieser befestigt ist.A support plate 103 is advantageously provided on each side of a prism 105, this prism 105 being integrally formed on or attached to the end plate 8.

Durch diese Art der Stützerbefestigung innerhalb des Raumes der Haube 24 wird vermieden, daß in der Abschlußplatte 8 Bohrungen vorgesehen und isoliermitteldicht verschlossen werden müssen.This type of support attachment within the space of the hood 24 avoids that 8 holes have to be provided in the end plate and sealed in an insulating-tight manner.

Über dem Sekundärsystem 16 bzw. über dessen Gießharzumhüllung 15 ist ein Spannungswandler 200 vorgesehen. Er ist innerhalb der ein- oder insbesondere zweiteiligen Haube 24 angeordnet und in diesem an wenigstens zwei dort vorgesehenen Befestigungslaschen 201 oder an einem Teil- oder an einem Ringflansch befestigt. Vorzugsweise ist der Deckel 30 als Dom ausgebildet und mit einem unteren zylindrischen Abschnitt, beispielsweise dem Rohrabschnitt 29, isoliermitteldicht verbunden, insbesondere verschraubt. Um eine einfache Montage des erfindungsgemäßen kombinierten Wandlers zu ermöglichen, ist unten am Spannungswandler 200 eine Steckvorrichtung 202 angebracht, vorzugsweise angeschraubt oder insbesondere an die Gießharzumhüllung 203 der Hoch- und Niederspannungswicklungen 200.1, 200.2 angeformt. Vorzugsweise ist dies eine Vielfachsteckvorrichtung für die Sekundärausleitungen des Spannungswandlers 200, so daß damit ein Spannungswandler 200 mit mehreren Anschlüssen vorgesehen ist.A voltage converter 200 is provided over the secondary system 16 or over its cast resin sheathing 15. It is arranged within the one- or in particular two-part hood 24 and fastened in it to at least two fastening tabs 201 provided there or to a partial or an annular flange. The cover 30 is preferably designed as a dome and connected to a lower cylindrical section, for example the pipe section 29, in an insulating-tight manner, in particular screwed. In order to enable simple assembly of the combined converter according to the invention, a plug device 202 is attached at the bottom of the voltage converter 200, preferably screwed on or in particular molded onto the cast resin sheathing 203 of the high and low voltage windings 200.1, 200.2. This is preferably a multiple plug device for the secondary rejects of the voltage converter 200, so that a voltage converter 200 with a plurality of connections is thus provided.

Oberhalb des Stromwandlers, also oberhalb seines Sekundärsystems 16 bzw. der Gießharzumhüllung 15, ist ein Steckvorrichtungsgegenstück 203 im unteren Teil der Haube 24 bzw. des Kopfes 4 starr befestigt, beispielsweise mit diesem verschraubt. Vorzugsweise ist das Steckvorrichtungsgegenstück 203 am Sekundärsystem 16 des Stromwandlers oben angebracht, beispielsweise engeschraubt oder mit angeformt. In dieses Steckvorrichtungsgegenstück 203 münden Auslaßleitungen, die außen, insbesondere entlang der Gießharzumhüllung 15 oder günstiger an diese mittels Gießharz angeformt oder in diese eingeformt sind und in das Ausleitungsrohr 5 weitergeführt sind. Im letzteren werden sie zum Klemmbrett im Fuß 3 des Wandlers geführt. Um temperatur- und/oder druckbedingte Längenänderungen der Haube 24 oder dgl. auszugleichen, ist die Steckverbindung 202, 204 so ausgebildet, daß die Einzelvorrichtungen 202, 204 in zusammengebautem Zustand axial gegeneinander verschiebbar sind, jedoch kontaktsicher verbunden bleiben.Above the current transformer, ie above its secondary system 16 or the cast resin sheath 15, a plug device counterpart 203 is rigidly fastened in the lower part of the hood 24 or the head 4, for example screwed to it. Preferably, the plug device counterpart 203 is attached to the secondary system 16 of the current transformer at the top, for example screwed on or molded on. In this plug device counterpart 203 open outlet lines, which are molded on the outside, in particular along the cast resin sheathing 15 or cheaper, or molded into it by means of cast resin, and are led into the discharge pipe 5. In the latter they are led to the clipboard in foot 3 of the converter. In order to compensate for temperature and / or pressure-related changes in length of the hood 24 or the like. The plug connection 202, 204 is designed such that the individual devices 202, 204 are axially displaceable relative to one another in the assembled state, but remain securely connected.

Hierbei kann die Anordnung so getroffen sein, daß das Zusammensetzen der Steckvorrichtungsteile 202, 204 beim Aufsetzen der Haube 24 unmittelbar und selbsttätig oder mittelbar über Zwischenverbindungselemente erfolgt.Here, the arrangement can be such that the assembly of the plug device parts 202, 204 takes place directly and automatically or indirectly via intermediate connecting elements when the hood 24 is put on.

Günstigerweise ist die Teilung der Haube 24 in einem Bereich 205 zwischen dem Durchführungsleiter, also hier der Basis 19 des Primärleiters 18 und dem die Wicklungen 200.1 und 200.2 des Spannungswandlers 200 durchsetzenden Schenkel 206 des Magnetkerns 207 angebracht. Insbesondere ist dieser Schenkel 206 unten und der wicklungsfreie Schenkel 208 oben angeordnet. Der Magnetkern 207 bzw. 207.1 und der Anfang der innen liegenden Hochspannungswicklung 200.1 liegen auf Hochspannungspotential.The division of the hood 24 is expediently arranged in an area 205 between the feedthrough conductor, that is to say the base 19 of the primary conductor 18 and the leg 206 of the magnetic core 207 passing through the windings 200.1 and 200.2 of the voltage converter 200. In particular, this leg 206 is below and the non-winding Leg 208 arranged above. The magnetic core 207 or 207.1 and the beginning of the internal high-voltage winding 200.1 are at high-voltage potential.

Vorzugsweise ist der Dom 30 den Abmessungen des Spannungswandlers 200 angepaßt und er kann üblicherweise wenigstens um diesen herum im Durchmesser kleiner sein als der übrige Abschnitt der Haube 24. Diese Möglichekit ergibt sich bei Ausführung des Magnetkernes 207 als Rahmenkern gemäß Fig. 4.Preferably, the dome 30 is adapted to the dimensions of the voltage converter 200 and it can usually be at least smaller in diameter around it than the remaining section of the hood 24. This possibility arises when the magnetic core 207 is designed as a frame core according to FIG. 4.

Vorteilhaft kann der Magnetkern als Mantelkern 207.1 ausgebildet sein. Dieser ist vorzugsweise in horizontaler Ebene angeordnet. Dadurch ergibt sich u.a. eine niedrigere Bauweise und der Durchmesser des Doms 30 muß dabei zumindest nicht größer sein als der des zylindrischen Abschnittes 29. Die Befestigung des Magnetkernes 207 bzw. 207.1erfolgt unmittelbar oder über Winkel- oder U-förmige Abschnitte 211 mittelbar am Wandlerkopf 4.The magnetic core can advantageously be designed as a jacket core 207.1. This is preferably arranged in the horizontal plane. This results in a lower design and the diameter of the dome 30 must at least not be greater than that of the cylindrical section 29. The magnetic core 207 or 207.1 is attached directly or indirectly to the transducer head 4 via angular or U-shaped sections 211.

Damit beim Aufsetzen der Haube 24 bzw. des Spannungswandlers 200 die Steckverbindung in Drehrichtung ohne Mühe in genauer Winkellage aufeinandergebracht werden kann, sind an den Steckvorrichtungen 202 und 204 und/oder an der Haube 24 bzw. an dem Dom 30 und an der Abschlußplatte 8 bzw. an dem Rohrabschnitt 29 und/oder an den Gießharzumhüllungen 15 und 203 Codierelemente 209 und Gegenstücke 210, beispielsweise in Form von Nut und Federn oder Stiften 209.1 und Bohrungen 210.1 oder dgl. angebracht. Hierdurch läßt sich ein Fehlanschluß des Spannungswandlers 200 grundsätzlich vermeiden.So that when the hood 24 or the voltage converter 200 is put on, the plug connection can be brought together in the direction of rotation without difficulty in an exact angular position, the plug devices 202 and 204 and / or on the hood 24 or on the dome 30 and on the end plate 8 or on the pipe section 29 and / or on the cast resin casings 15 and 203 coding elements 209 and counterparts 210, for example in the form of tongue and groove or pins 209.1 and bores 210.1 or the like. In this way, incorrect connection of the voltage converter 200 can be avoided in principle.

Gemäß einer weiteren, in Figur 5 dargestellten vorteilhaften Ausgestaltung der Erfindung kann der Primärleiter 18 des Stromwandlers 16, 18 aus zwei oder mehr Teilen bestehen, beispielsweise aus einem Winkel und aus einem Schenkel oder aus einer Basis und aus zwei Schenkeln. Bei einem Winkel bildet der eine Winkelschenkel die Basis 19, an die der Schenkel 20 bzw. 21 angebracht wird. Diese Art der Ausführung gestattet einen leichten Einbau, insbesondere bei kleinen Kern- oder Ringinnendurchmessern. Bei dreiteiliger Ausführung sind die Schenkel 20, 21 stumpfwinklig bis rechtwinklig an den Enden der stabförmigen Basis 19 befestigt. Die Schenkel 20, 21 können dabei als Bolzen ausgebildet sein. Die Isolierung des oder der Schenkel 20 und/oder 21 erfolgt mit Vorteil über eine Isolierbuchse und über einen Ring, der vorzugsweise ein Flansch der Isolierbuchse ist, die dicht in der Abschlußplatte 8 angebracht sind, beispielsweise durch Eingießen oder mittels Ringdichtungen oder dergleichen. Der Ring oder Flansch wird einerseits mit dem Außenflansch 23 der Schenkel 20, 21 und andererseits mit der Abschlußplatte 8 dicht verschraubt.According to a further advantageous embodiment of the invention shown in FIG. 5, the primary conductor 18 of the current transformer 16, 18 can consist of two or more parts consist, for example, of an angle and one leg or of a base and two legs. At an angle, the one angle leg forms the base 19 to which the leg 20 or 21 is attached. This type of design allows easy installation, especially with small core or ring inner diameters. In the case of a three-part design, the legs 20, 21 are attached at an obtuse angle to a right angle at the ends of the rod-shaped base 19. The legs 20, 21 can be designed as bolts. The isolation of the leg or legs 20 and / or 21 is advantageously carried out via an insulating sleeve and a ring, which is preferably a flange of the insulating sleeve, which are attached tightly in the end plate 8, for example by pouring or by means of ring seals or the like. The ring or flange is screwed tightly on the one hand to the outer flange 23 of the legs 20, 21 and on the other hand to the end plate 8.

Eine weitere vorteilhafte Ausgestaltung des Stromwandlerteils der Erfindung besteht darin, daß der Primärleiter 18 als koaxialer Doppelleiter ausgebildet ist, in dem zwei voneinander isolierte U-förmige Leiter vorgesehen sind. Dabei besteht vorzugsweise der eine aus einem Außenleiter 50 und der andere aus einem Innenleiter 51. Diese sind durch geeignete Isolationsstrecken, die wenigstens zum Teil durch ein feste Dielektrikum 52, wie Gießharz, voneinander getrennt und lagefixiert sind. Das Dielektrikum 52 ist zumindest im Bereich der Anschlußabschnitte 22 vorgesehen und dichtet so gleichzeitig ab. Dabei ist der Außenleiter 50 des einen Schenkel 20 durch eine Isolierbuchse von der Abschlußplatte 8 isoliert angeordnet und der Außenleiter 50 des anderen Schenkels 21 ist mit der Abschlußplatte 8 leitend verbunden, beispielsweise direkt darin ohne Isolierung befestigt.A further advantageous embodiment of the current transformer part of the invention is that the primary conductor 18 is designed as a coaxial double conductor in which two U-shaped conductors which are insulated from one another are provided. One preferably consists of an outer conductor 50 and the other of an inner conductor 51. These are separated and fixed in position by suitable insulation paths which are at least partially separated from one another by a solid dielectric 52, such as cast resin. The dielectric 52 is provided at least in the region of the connection sections 22 and thus seals at the same time. Here, the outer conductor 50 of one leg 20 is arranged insulated from the end plate 8 by an insulating bush and the outer conductor 50 of the other leg 21 is conductively connected to the end plate 8, for example directly attached therein without insulation.

Hierbei besitzen natürlich die Außenleiter 50 der Schenkel 20, 21 einen Außenflansch 23. Die Innenleiter 51 der Schenkel 20, 21 sind isoliert nach außen geführt und an ihnen können Anschlußkontakte 53, beispielsweise mittels einer Klemmschelle 54, entsprechend schwenkbar angebracht sein. Das gleiche kann am isolierten Außenleiter 50 des Schenkels 20 vorgesehen sein.Here, of course, the outer conductors 50 of the legs 20, 21 have an outer flange 23. The inner conductors 51 of the legs 20, 21 are guided to the outside in an insulated manner, and connection contacts 53, for example by means of a clamp 54, can be pivoted accordingly. The same can be provided on the insulated outer conductor 50 of the leg 20.

Durch diese Ausgestaltung des Primärleiters 18 als Doppelleiter ist es möglich, die beiden Leiter getrennt zu verwenden oder hintereinander oder parallel zu schalten. Es ist daher eine Umschaltung im Verhältnis 1:2 möglich oder bei Parallelschaltung ist der Primärleiter für eine höhere Strombelastung verwendbar. Als Einzelleiter kann jeder der beiden Koaxialleiter auch einen gesonderten Meßstrom führen.This configuration of the primary conductor 18 as a double conductor makes it possible to use the two conductors separately or to connect them in series or in parallel. It is therefore possible to switch over in a ratio of 1: 2 or, in the case of parallel connection, the primary conductor can be used for a higher current load. As a single conductor, each of the two coaxial conductors can also carry a separate measuring current.

Die Parallelschaltung geschieht durch Zusammenschaltung der Innenleiter 50 und der Außenleiter 51 des Schenkels 20 und des Schenkels 21.The parallel connection takes place by interconnecting the inner conductor 50 and the outer conductor 51 of the leg 20 and the leg 21.

Die Reihenschaltung erfolgt durch Anlegen der Anschlußkontakte 53 an den linken Außenleiter 50, durch elektrische Verbindung des Außenflansches 23 mit der elektrisch leitenden Abschlußplatte 8, durch eine weitere elektrische Verbindung der Abschlußplatte 8 über einen weiteren Anschlußkontakt 53 mit dem linken Innenleiter 51, wobei an dem rechten Anschlußabschnitt 22 eine weitere Kontaktierung mit dem rechten Anschlußkontakt 53 erfolgt.The series connection is carried out by applying the connection contacts 53 to the left outer conductor 50, by electrically connecting the outer flange 23 to the electrically conductive end plate 8, by a further electrical connection of the end plate 8 via a further connection contact 53 to the left inner conductor 51, with the right one Connection section 22 is further contacted with the right terminal contact 53.

Zur Verbindung der Basis 19 des Primärleiters 18 mit den Schenkels 20, 21 können auch Klemmschellen 54 verwendet werden. Dabei können diese aus dem Rohr- oder Vollmaterial der Schenkel 20, 21 oder aus der Basis 19, und zwar sowohl bei den Außenleitern 50 als auch bei den Innenleitern 51, hergestellt sein. Dies kann durch entsprechende Formgebung und/oder spanende Bearbeitung erfolgen. Dabei kann der einzuklemmende Leiterteil 55 im Durchmesser reduziert sein.Clamp clamps 54 can also be used to connect the base 19 of the primary conductor 18 to the legs 20, 21. These can be made from the tubular or solid material of the legs 20, 21 or from the base 19, both in the outer conductors 50 and in the Inner conductors 51, be made. This can be done by appropriate shaping and / or machining. The conductor part 55 to be clamped can be reduced in diameter.

Zur einfachen Montage besitzt der Außenleiter 50 der Schenkel 20, 21 im Bereich 56 des Innenleiters 51 der Basis 19 eine Bohrung.For simple assembly, the outer conductor 50 of the legs 20, 21 has a bore in the area 56 of the inner conductor 51 of the base 19.

Die Verbindung der Außenleiter 50 von der Basis 19 zu den Schenkeln 20, 21 erfolgt über je einen an den Enden 58 des Außenleiters 50 an der Basis 19 angebrachten Flansch 59, mit dem die innerhalb des Kopfgehäuses 24 etwas vorstehenden Enden 60 der Außenleiter 50 der Schenkel 20, 21 verschraubt sind.The connection of the outer conductors 50 from the base 19 to the legs 20, 21 takes place in each case via a flange 59 which is attached to the ends 19 of the outer conductor 50 on the base 19 and with which the ends 60 of the outer conductors 50 of the legs protrude somewhat inside the head housing 24 20, 21 are screwed.

Günstigerweise sind an allen Innenflächen des Mantelkerns 207 Abschirmungen 212 angebracht. Diese können auch einen gemeinsamen Rahmen bilden. Sie sind vorteilhaft am nach unten zu dem Ring 14 des Stromwandlers 16, 18 weisenden Ende 213 nach unten auswärts verrundet bzw. ballig ausgebildet.Shields 212 are advantageously attached to all inner surfaces of the jacket core 207. These can also form a common framework. They are advantageously rounded at the end 213 which points downward to the ring 14 of the current transformer 16, 18, and are rounded downwards.

Unter Umständen kann es zweckmäßig sein, den Mantelkern 207 in Richtung des Durchführungsleiters 19 des Stromwandlerprimärleiters 18 anzuordnen. Der Durchführungsleiter 19 kann den gesamten Kopf 4 waagrecht durchsetzen, wobei er beidseitig aus der Haube 24 herausragt und wenigstens auf einer Seite elektrisch von dieser isoliert ist. Er kann aber auch die beschriebene U-Form aufweisen. Gegebenenfalls kann er auch aus zwei parallelen Strängen bestehen, so daß er umschaltbar ist. Einer der beiden Stränge ist dann an jedem Schenkel von der Abschlußplatte elektrisch isoliert angebracht.Under certain circumstances, it may be expedient to arrange the sheath core 207 in the direction of the feed-through conductor 19 of the current transformer primary conductor 18. The feed-through conductor 19 can penetrate the entire head 4 horizontally, protruding from the hood 24 on both sides and being electrically insulated from it at least on one side. But it can also have the U-shape described. If necessary, it can also consist of two parallel strands, so that it can be switched. One of the two strands is then attached to each leg in an electrically insulated manner from the end plate.

Die Verwendung des Stromwandlerteils mit umschaltbarer Primärwicklung des erfindungsgemäßen kombinierten Wandlers ist insbesondere dann von Vorteil, falls der Spannungswandlerteil über die Steckvorrichtung 202, 204 abgekoppelt ist und dieser Wandler dann als reiner Stromwandler betrieben wird.The use of the current transformer part with a switchable primary winding of the combined transformer according to the invention is particularly advantageous if the voltage transformer part is disconnected via the plug device 202, 204 and this transformer is then operated as a pure current transformer.

Claims (24)

  1. A combined high-voltage current and voltage transformer in a head type construction comprising a column (2) of insulating material which supports the head housing (4), wherein the active components of the current transformer (16, 18) and, above the latter, the active components of the voltage transformer (200) are arranged in the head housing (4), characterised in that the primary conductor (18) of the current transformer (16, 18) is U-shaped, where the base (19) of said primary conductor (18) passes through the ring (14) of the secondary system (16) of the current transformer (16, 18) at least approximately centrally and where the two flanks (20, 21) of said primary conductor (18) project downwards and are internally attached on the cover plate (8) of the head housing (4), which consists of the cover plate (8) and the hood (24) attached thereto, where at least one flank (20) is electrically insulated from the metallic cover plate (8) and can be contacted through said cover plate (8) from the exterior and from the bottom, and that via pin insulators (17) the ring (14) of the secondary system (16) of the current transformer (16, 18) is likewise attached only on the cover plate (8).
  2. A combined transformer as claimed in Claim 1, characterised in that the primary conductor (18) of the current transformer (16, 18) comprises at least two parallel strands insulated from one another, where only one of these strands is contacted on one side with the cover plate (8).
  3. A combined transformer as claimed in Claim 1 or 2, characterised in that the ring (14) of the secondary system (16) of the current transformer (16, 18) is internally attached to fixing elements (102) in the head housing (4).
  4. A combined transformer as claimed in Claim 1, 2 or 3, characterised in that the hood (24) comprises internal fixing straps (201), an internal flange or parts of an internal flange, to which the voltage transformer (200) is attached, that at the bottom, thus in the region of the current transformer (16, 18), the voltage transformer (200) comprises a plug device (202), in particular a multiple plug device, to which its secondary lead-out conductors are connected, that a plug device counterpart (204) is arranged in the upper part of or above the current transformer (16, 18), and that the assembly of the plug device components (202, 204) takes place automatically when the hood (24) is applied.
  5. A combined transformer as claimed in one of Claims 1 to 4, characterised in that the plug device counterpart (204) is attached to the upper part of the current transformer (16, 18).
  6. A combined transformer as claimed in Claim 5, characterised in that the secondary system (16) of the current transformer (16, 18) comprises a cast resin casing (15) and that the plug device counter part (204) is attached to said casing (15) or forms a structural unit therewith.
  7. A combined transformer as claimed in one of Claims 4 to 6, characterised in that the plug connection (202, 204) is provided with axial play to compensate for temperature-related and/or pressure-related, axial changes in length.
  8. A combined transformer as claimed in Claim 6 or 7, characterised in that the lead-out conductors extend from the plug device counter-part (204) along the cast resin casing (15) of the current transformer (16, 18) downwards to the lead-out pipe (5).
  9. A combined transformer as claimed in Claim 8, characterised in that the lead-out conductors are formed in the cast resin casing (15) of the secondary system (16) of the current transformer (16, 18).
  10. A combined transformer as claimed in one of Claims 1 to 9, characterised in that the plug device (202) is arranged or formed on the lower part of the cast resin body (203) of the voltage transformer (200).
  11. A combined transformer as claimed in one of Claims 1 to 10, characterised in that the hood (24) is divided into two parts and comprises a cylindrical portion (29) which is attachable to the cover plate (8) so as to be impervious to insulating means, and a dome (30) which can be positioned on said portion (29) and attached thereto.
  12. A combined transformer as claimed in one of Claims 1 to 11, characterised in that the hood (24) is divided in the region (205) between the lead-through conductor (19) of the current transformer (16, 18) and the magnetic core flank (207) which passes through the windings (200.1, 200.2) of the voltage transformer (200).
  13. A combined transformer as claimed in one of Claims 1 to 12, characterised in that the hood (24) is divided in the region (205) between the lead-through conductor (19) of the primary conductor (18) of the current transformer (16, 18) and that flank (206) of the shell core (207) which passes through the windings (200.1, 200.2) of the voltage transformer (200), and that the two parts (29, 30) of the hood (24) are connected to one another so as to be impervious to insulating means at the division point (31).
  14. A combined transformer as claimed in Claim 12 or 13, characterised in that the current transformer is accommodated in the cylindrical portion (29) of the hood (24) and the voltage transformer (200) is accommodated in the dome (30) of the hood (24).
  15. A combined transformer as claimed in one of Claims 1 to 14, characterised in that the hood (24) with the cover plate (8) and/or the plug connection (202, 204) and/or the cast resin casings (15, 203) are provided in the plug-in direction with coder elements (209.1, 210.1) which protect against unintentional angular displacement.
  16. A combined transformer as claimed in one of Claims 1 to 15, characterised in that the dome (30), as a whole or in its upper part, is smaller in diameter than the cylindrical portion (29) of the hood (24).
  17. A combined transformer as claimed in one of Claims 1 to 16, characterised in that the base (19) of the primary conductor (18) of the current transformer (16, 18) passes horizontally through the perpendicularly disposed annular core(s) (13).
  18. A combined transformer as claimed in one of Claims 1 to 17, characterised in that the core (207) of the voltage transformer (200) has the form of a shell core (207.1).
  19. A combined transformer as claimed in Claim 18, characterised in that the shell core (207.1) extends in a horizontal plane.
  20. A combined transformer as claimed in Claim 18 or 19, characterised in that the longitudinal direction of the shell core (207.1) extends in the direction of the lead-through conductor (19) of the primary conductor (18) of the current transformer (16, 18).
  21. A combined transformer as claimed in one of Claims 1 to 20, characterised in that the core (207; 207.1) of the voltage transformer (200) is electrically conductively connected to the hood (24).
  22. A combined transformer as claimed in one of Claims 1 to 21, characterised in that screening elements (212) are arranged on all the inner surfaces of the core (207; 207.1).
  23. A combined transformer as claimed in Claim 22, characterised in that at the end (213) facing towards the current transformer (16, 18) the screening elements (212) extend downwards in a convex formation.
  24. A combined transformer as claimed in one of Claims 1 to 23, characterised in that the hood (24) and the magnetic core (207; 207.1) of the voltage transformer (200) are connected to high voltage potential and that the inner starting point of the internally disposed high voltage winding (200.1) is connected to high voltage potential.
EP87103201A 1986-03-13 1987-03-06 Combined current and voltage transformer for a high-voltage installation Expired - Lifetime EP0236974B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87103201T ATE76999T1 (en) 1986-03-13 1987-03-06 COMBINED HIGH VOLTAGE CURRENT AND VOLTAGE TRANSFORMER.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE19863608389 DE3608389A1 (en) 1986-03-13 1986-03-13 Combined high-voltage current transformer and voltage converter
DE19863608390 DE3608390A1 (en) 1986-03-13 1986-03-13 Combined high-voltage current transformer and voltage converter
DE3608389 1986-03-13
DE3608390 1986-03-13
DE3608388 1986-03-13
DE19863608388 DE3608388A1 (en) 1986-03-13 1986-03-13 Combined high-voltage current transformer and voltage converter

Publications (3)

Publication Number Publication Date
EP0236974A2 EP0236974A2 (en) 1987-09-16
EP0236974A3 EP0236974A3 (en) 1988-07-20
EP0236974B1 true EP0236974B1 (en) 1992-06-03

Family

ID=27194151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103201A Expired - Lifetime EP0236974B1 (en) 1986-03-13 1987-03-06 Combined current and voltage transformer for a high-voltage installation

Country Status (11)

Country Link
US (1) US4731599A (en)
EP (1) EP0236974B1 (en)
CN (1) CN1010721B (en)
AU (1) AU593891B2 (en)
BR (1) BR8700893A (en)
CA (1) CA1278350C (en)
DE (1) DE3779451D1 (en)
HU (1) HU201420B (en)
IN (1) IN166063B (en)
SU (1) SU1662362A3 (en)
TR (1) TR22966A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023232665A1 (en) 2022-06-03 2023-12-07 Siemens Energy Global GmbH & Co. KG Coated active component in a high-voltage device and method for increasing the dielectric strength

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737989C1 (en) * 1987-11-09 1989-05-11 Messwandler Bau Ag High voltage converter
CH682190A5 (en) * 1991-04-22 1993-07-30 Asea Brown Boveri
IT1279382B1 (en) * 1992-03-04 1997-12-10 Mario Antonio Taddei TRANSFORMATION OF CURRENT FOR HIGH VOLTAGE, TO PRODUCTION FOR WAREHOUSE, BY AUTOMATION OF ITS INSULATION.
DE4240118C1 (en) * 1992-11-30 1994-03-31 Ritz Messwandler Kg Execution, especially for high voltages with a special electrode holder
DE4243207A1 (en) * 1992-12-19 1994-06-23 Abb Patent Gmbh Voltage converter
IT1275290B (en) * 1995-06-01 1997-08-05 Passoni E Villa Fabbrica Isola TRANSFORMER FOR CURRENT MEASUREMENT IN HIGH VOLTAGE ELECTRIC NETWORKS
WO1999014772A1 (en) * 1997-09-16 1999-03-25 Kommanditgesellschaft Ritz Messwandler Gmbh & Co. Transformer system provided with a decoupling system
US7517235B2 (en) * 2006-12-28 2009-04-14 General Electric Company Press fit connection for mounting electrical plug-in outlet insulator to a busway aluminum housing
US8749226B2 (en) * 2010-05-17 2014-06-10 Abb Technology Ag Line-powered instrument transformer
CN102479610A (en) * 2010-11-26 2012-05-30 江苏思源赫兹互感器有限公司 Combined electronic mutual inductor
US8587399B2 (en) 2012-02-06 2013-11-19 Continental Control Systems, Llc Split-core current transformer
CN102779637A (en) * 2012-08-15 2012-11-14 保定市久鼎电力设备有限责任公司 Combined power transformer
PL2800113T3 (en) * 2013-04-29 2016-09-30 High voltage dry instrument transformer
CN105588976B (en) * 2015-12-23 2018-07-03 国网重庆市电力公司电力科学研究院 Voltage and current combined sensor and measure voltage & current system
WO2018113954A1 (en) * 2016-12-21 2018-06-28 Abb Schweiz Ag Combined instrument transformer for hv applications.
EP3474024A1 (en) * 2017-10-19 2019-04-24 RITZ Instrument Transformers GmbH Current transformer with fluid or oil-impregnated paper insulation for high voltage
DE102019214368B4 (en) * 2019-09-20 2023-02-02 Siemens Energy Global GmbH & Co. KG Instrument transformer arrangement with a voltage transformer and a current transformer
EP4060696A1 (en) * 2021-03-17 2022-09-21 Hitachi Energy Switzerland AG High-voltage column current transformer

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB774638A (en) * 1954-07-12 1957-05-15 Gen Electric Improvements relating to electric current transformers
DE1248154B (en) * 1964-04-06 1967-08-24 Siemens Ag Converter combined with a voltage converter
US3441885A (en) * 1965-06-14 1969-04-29 Gen Electric High voltage current transformer having rigid secondary eye bolt and flexible primary cables in high voltage tank
DE1563272B1 (en) * 1966-11-29 1970-07-02 Licentia Gmbh Support head current transformer
DE1638548A1 (en) * 1967-02-06 1970-08-13 Siemens Ag High voltage current transformer
US3380009A (en) * 1967-03-10 1968-04-23 Gen Electric High voltage current transformer
DE2242010C3 (en) * 1972-08-23 1980-02-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Small current transformer
DE2325446B2 (en) * 1973-05-17 1977-03-31 Siemens AG, 1000 Berlin und 8000 München VOLTAGE CONVERTER FOR HIGH-VOLTAGE SWITCHGEAR WITH MULTIPLE LADDER WITH METAL ENCLOSURE
SE399985B (en) * 1976-07-02 1978-03-06 Asea Ab POWER TRANSFORMER
US4104497A (en) * 1976-08-30 1978-08-01 General Electric Company Disconnect contact assembly for metal-clad switchgear and the like
JPS55125616A (en) * 1979-03-22 1980-09-27 Mitsubishi Electric Corp Voltage and current transformer for gas-insulation meter
US4491818A (en) * 1983-03-30 1985-01-01 Zenith Electronics Corporation Pickup coil assembly with coaxial feed
DE3540547A1 (en) * 1985-11-15 1987-05-21 Messwandler Bau Ag High-voltage current transformer and a method for producing such a high-voltage current transformer
DE3608391A1 (en) * 1985-11-15 1987-09-17 Messwandler Bau Ag HIGH VOLTAGE CURRENT TRANSFORMER
DE3737989C1 (en) * 1987-11-09 1989-05-11 Messwandler Bau Ag High voltage converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023232665A1 (en) 2022-06-03 2023-12-07 Siemens Energy Global GmbH & Co. KG Coated active component in a high-voltage device and method for increasing the dielectric strength
DE102022205691A1 (en) 2022-06-03 2023-12-14 Siemens Energy Global GmbH & Co. KG Coated active component in a high-voltage device and method for increasing dielectric strength

Also Published As

Publication number Publication date
CN1010721B (en) 1990-12-05
AU593891B2 (en) 1990-02-22
TR22966A (en) 1988-12-13
EP0236974A2 (en) 1987-09-16
SU1662362A3 (en) 1991-07-07
AU6994187A (en) 1987-09-17
US4731599A (en) 1988-03-15
DE3779451D1 (en) 1992-07-09
IN166063B (en) 1990-03-10
CA1278350C (en) 1990-12-27
CN87101790A (en) 1987-09-30
HUT44356A (en) 1988-02-29
HU201420B (en) 1990-10-28
BR8700893A (en) 1987-12-22
EP0236974A3 (en) 1988-07-20

Similar Documents

Publication Publication Date Title
EP0236974B1 (en) Combined current and voltage transformer for a high-voltage installation
DE2354632C3 (en) Vacuum circuit breaker
EP0232471B1 (en) High-voltage current transducer and method for producing it
DE3230091C2 (en)
DE19519301A1 (en) Disconnector for a metal-enclosed gas-insulated high-voltage switchgear
DE3540547C2 (en)
DE69401800T2 (en) Multipurpose power feedthrough
DE4414828C2 (en) High voltage converter
DE4135391C1 (en) Cable connector for medium high voltage and high current - has socket with cup-shaped contact element, and cylindrical insulating housing covering inserted cable
EP0755061B1 (en) Single-pole voltage transformer
DD258491A5 (en) COMBINED HIGH VOLTAGE CURRENT AND VOLTAGE CONVERTER
DE3644553C2 (en)
EP0718942B1 (en) High voltage installation
EP3979278B1 (en) Current transformer module for a switchgear and corresponding switchgear
DE3608388A1 (en) Combined high-voltage current transformer and voltage converter
DE19530163C2 (en) High voltage leadout and feedthrough arrangement for transformers or choke coils
DE2843608C2 (en) Transformer, especially voltage converter or test transformer
DE902886C (en) Current transformer, preferably for direct installation in busbars
DE8532309U1 (en) High-voltage current transformer in head design
DE3608390A1 (en) Combined high-voltage current transformer and voltage converter
DE4135390C1 (en) Current connecting plug for power supply - has rotatable fixing ring on housing allowing connection to housing of cooperating socket
DE4435359A1 (en) Pole column of an electrical circuit breaker
DE3908107A1 (en) Gas-insulated combined current transformer and voltage converter
DE1488299C (en) High voltage current transformer
DE3017253A1 (en) HV bushing for walls and plates - has components of materials whose total heat expansion values correspond to that of through cable

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19881111

17Q First examination report despatched

Effective date: 19910621

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19920603

Ref country code: SE

Effective date: 19920603

Ref country code: NL

Effective date: 19920603

Ref country code: GB

Effective date: 19920603

Ref country code: GR

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: 19920603

REF Corresponds to:

Ref document number: 76999

Country of ref document: AT

Date of ref document: 19920615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3779451

Country of ref document: DE

Date of ref document: 19920709

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

Effective date: 19920914

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930329

Year of fee payment: 7

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

Ref country code: LU

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

Effective date: 19930331

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19941130

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: CH

Payment date: 20030225

Year of fee payment: 17

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

Ref country code: BE

Payment date: 20030305

Year of fee payment: 17

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

Ref country code: DE

Payment date: 20030320

Year of fee payment: 17

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

Ref country code: AT

Payment date: 20030324

Year of fee payment: 17

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

Ref country code: AT

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

Effective date: 20040306

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

Ref country code: LI

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

Effective date: 20040331

Ref country code: BE

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

Effective date: 20040331

Ref country code: CH

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

Effective date: 20040331

BERE Be: lapsed

Owner name: MESSWANDLER-BAU A.G. *MWB

Effective date: 20040331

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: 20041001

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL