EP3427276B1 - Transformer with insertable high-voltage bushings - Google Patents

Transformer with insertable high-voltage bushings Download PDF

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Publication number
EP3427276B1
EP3427276B1 EP17720444.3A EP17720444A EP3427276B1 EP 3427276 B1 EP3427276 B1 EP 3427276B1 EP 17720444 A EP17720444 A EP 17720444A EP 3427276 B1 EP3427276 B1 EP 3427276B1
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EP
European Patent Office
Prior art keywords
bushing
voltage
section
plug
housing
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Application number
EP17720444.3A
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German (de)
French (fr)
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EP3427276A1 (en
Inventor
Christian ETTL
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Siemens Energy Global GmbH and Co KG
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Siemens Energy Global GmbH and Co KG
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Publication of EP3427276A1 publication Critical patent/EP3427276A1/en
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    • 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
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • 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
    • H01F27/025—Constructional details relating to cooling
    • 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
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/94—Holders formed as intermediate parts for linking a counter-part to a coupling part

Definitions

  • the invention relates to an electrical device for connection to a high-voltage network with a housing that can be filled with an insulating liquid, in which a core with at least one winding is arranged, a bushing attached to the housing, and a high-voltage bushing that can be inserted into the bushing.
  • Such an electrical device is, for example, from DE 10 2007 022 641 A1 already known.
  • a transformer is disclosed which has sockets into which bushings for connecting the transformer to a high-voltage network can be inserted.
  • the transformer is designed as a so-called traveling transformer, which is designed in such a way that it can be transported between different locations with as little assembly effort as possible while maintaining a specified profile.
  • the previously known electrical device has the disadvantage that the pluggable bushings are only designed for voltages in the lower high-voltage range.
  • the FR 2 113 911 A1 discloses a transformer electrical apparatus having two windings 26 and 28 each enclosing a core portion which are parts of a closed iron circuit. The windings are thus inductively coupled to one another.
  • core windings are arranged in a housing or tank which is filled with an insulating fluid.
  • Each winding is connected via a connecting line to the high-voltage conductor of a high-voltage bushing, the insertion section of which extends through a through-opening in the cover of the tank into the oil-filled interior of the tank. It is attached to the cover with the aid of an attachment section.
  • the length L1 from the attachment section to the free end of the insertion section L1 is given as approximately two meters.
  • the length of the pillar section of the bushing extending from the fastening means to an outdoor connection is five meters.
  • the EP 2 442 321 A1 relates to a calotte for a high-voltage lead-out.
  • the DE 12 82 170 B describes a removable bushing for power transformers, wherein the bushing can be releasably attached to the transformer tank with fasteners. A separation point is provided between the connecting line and the bushing so that the bushing can be easily installed. However, the insertion end of the high-voltage bushing extends into the oil-filled tank of the transformer 10 .
  • the EP 2 431 982 B1 describes a high-voltage bushing with a plug contact.
  • the bushing can be plugged into a bushing so that the plug contact of the bushing is electrically conductively connected to a contact part of the socket.
  • the contact part is in turn connected to a primary winding of the transformer via a connecting line which extends inside a transformer housing.
  • the bushing socket is firmly mounted on the transformer housing and seals the transformer housing from the outside. In this way, the transformer housing can be easily transported without a bushing.
  • the bushing is simply plugged into the socket on site. This speeds up the commissioning of the transformer. A complex electrical connection between the high-voltage bushing and the winding is avoided.
  • the object of the invention is to provide an electrical device of the type mentioned at the outset that can also be used at higher voltages.
  • the high-voltage bushing has a fastening section with which it can be fastened to the housing and/or to the bushing socket and from which it extends with a column section in a longitudinal direction over a length L2 to a high-voltage connection, wherein the length L2 is greater than three meters.
  • an electrical device for example a transformer or a choke, which is designed for voltages above 150 kV.
  • the high-voltage bushing is dimensioned accordingly for this.
  • the high-voltage bushing has a fastening section with which the high-voltage bushing can be fixed or fastened to the housing of the electrical device.
  • a pillar section of the high-voltage bushing which extends longitudinally from the fastening section to a high-voltage connection at the free end of the high-voltage bushing, has a length L2 of more than 3 meters.
  • High-voltage bushings in this voltage range have not previously been designed as plug-in components. The electrical insulation required for this was classified as too complex.
  • an electrical device with a plug-in bushing is also provided in higher voltage ranges for the first time. The weights that occur are absorbed by the fastening section.
  • the pillar section expediently extends perpendicularly or at right angles to a horizontal housing cover of the housing, so that the weight of the high-voltage bushing is introduced directly from above, ie vertically, into the bushing socket.
  • the weight of the bushing thus ensures a high contact pressure within the socket, so that in this way good insulation is provided by a solid-state composite.
  • the high-voltage bushing is connected to the bushing socket by means of an expedient, detachable connection, for example a screw connection.
  • the high-voltage bushing leads via an insertion section that is provided for insertion into the bushing socket.
  • the high-voltage bushing has an insertion section that also extends in said longitudinal direction, with which the high-voltage bushing extends into the bushing socket over a length L1, the length L1 being shorter than 600 mm.
  • the plug-in section of the high-voltage bushing has been shortened compared to comparable high-voltage bushings in the same voltage range. This shortening enables a correspondingly shorter bushing which, in other words, extends less deeply into the housing of the electrical device, ie into its oil chamber. With this version, there is no need to mount a current transformer on the bushing.
  • each bushing has a fastening section for fastening to the housing, with a hollow receiving section made of an electrically non-conductive insulating material extending into the housing, with a metallic contact part being arranged in a closed and tapered end area of the receiving section, which extends through the insulating material of the receiving section extends or extends it towards the closed end area.
  • each bushing socket has an open end approximately at the level of the housing cover, which allows insertion of the plug-in section of the high-voltage bushing.
  • a receiving section extends from the fastening section of the bushing into the interior of the housing, with the receiving section being made of an insulating material that provides the necessary insulation between the contact piece, which is at a high voltage potential during operation, and the housing of the transformer, which is located on is at ground potential.
  • the receiving section and the plug-in section are designed to complement one another, so that due to the dead weight of the high-voltage bushing, the plug-in section is pressed firmly against the inner wall of the receiving section, in order to avoid voltage peaks between the high-voltage bushing and the plug-in socket.
  • the contact part is advantageously connected to a winding via a winding connection line which extends inside the housing.
  • the winding connection line is equipped with a current transformer. Due to the fact that the current transformer is arranged inside the housing, the current transformer no longer has to be integrated into the wiring harness in a time-consuming process when the electrical device is installed on site. In other words, the electrical device according to the invention can be put into operation quickly on site. Complex installation of current transformers is avoided with this design. Conveniently are Mounting openings provided in the housing to allow access to the or the current transformer after draining the insulating liquid.
  • the plug-in section of the high-voltage bushing is encased by a viscous insulator, with a high-voltage conductor extending through the viscous insulator or, in other words, the casing, at the free end of the plug-in section.
  • the viscous or highly viscous insulator as the outer shell, ensures adequate electrical insulation between the insulating and dimensionally stable solids of the plug-in socket and the plug-in section lying against one another.
  • the insulator is expediently a pasty, lubricious substance with flow properties.
  • the viscous insulator Due to the flow properties, the viscous insulator is pressed into the joint between the plug-in section of the high-voltage bushing and the receiving section of the bushing and fills it completely.
  • the receiving section has a sufficiently large additional volume with free spaces into which the viscous insulator can be pressed. In this way, air pockets between the plug-in section and the receiving section, which result in high electrical field strengths, can be avoided.
  • FIG. 1 shows a perspective view of an embodiment of the electrical device according to the invention, which is designed as a transformer 1 here.
  • the transformer 1 shown there has a housing 2 which is equipped with a cooling module 3, an expansion tank 4, an auxiliary power module 5 and high-voltage bushings 6, 7, 8.
  • the components or modules mentioned are detachably connected to one another and can therefore be easily dismantled and transported independently of one another.
  • arresters 9 which have a non-linear resistance within their arrester housing, which changes over from a non-conductive state to a conductive state in the event of overvoltages and thus protects the components connected in parallel to it.
  • the high-voltage bushings 6, 7 and 8 are each designed as plug-in high-voltage bushings and their insertion end can be inserted into suitable bushing sockets 10.
  • the bushings 10 are of rotationally symmetrical design and delimit a cavity which is open towards the housing cover but is closed on one side and which is designed to complement the plug-in section of the respective high-voltage bushing 6 , 7 , 8 .
  • the bushings 10 are also attached to the housing 2 in a fluid-tight manner, so that the interior or oil space of the single-phase transformer 1 is hermetically, ie air-tight and liquid-tight, sealed off from the outside atmosphere.
  • a line bolt that cannot be seen in the figure is held as a contact part, which, when the high-voltage bushing 6, 7 or 8 is inserted into the respective bushing 10, is in conductive contact with the high-voltage conductor that extends through the respective high-voltage bushing 6, 7, 8 .
  • Said line bolt extends into the interior of the housing 2, ie into its oil chamber, where it is in contact with a winding connection line, which thus electrically connects the bushing socket to the respective high-voltage or low-voltage winding of the transformer 1.
  • a pillar section 12 extends from the fastening connection 11 to a high-voltage connection 13, which in the exemplary embodiment shown is an outdoor connection.
  • FIG figure 2 shows the housing 2 of the transformer 1 according to FIG figure 1 in a top view.
  • the housing 2 has three plug-in sockets 10, which are figure 2 all are sealed fluid-tight with a lid.
  • Fluid-tight here means that the cover closes the openings in an airtight and liquid-tight manner by means of appropriate sealing means.
  • figure 3 shows a bushing 10 and a high-voltage bushing 8 in a sectional side view, the high-voltage bushing 8 being inserted into the bushing 10 with an insertion section 22 .
  • the bushing 10 has a fastening section 14 with which it is fixedly mounted on a cover 15 of the housing 2 . Expedient screw connections are used for this purpose, for example.
  • sealing means (not shown in the figures) are required, which are clamped between the cover 15 and the fastening section 14 designed as a flange.
  • Each feedthrough socket 10 further includes a receiving portion 16 made of an electrically non-conductive material.
  • the receiving section 16 tapers towards a closed end 17 .
  • the wall of the receiving section 16 is penetrated by a bolt-shaped contact part 18 .
  • the contact part 18 is connected to a winding connecting line 20 and a shielding cap 21 as shielding on its section which protrudes into the interior 19 or oil chamber of the housing 2 .
  • the winding connection line 20 is also fitted with a current transformer 26, which is figure 4 is shown.
  • the current transformer 26 is thus permanently installed in the housing and is used to detect an electric current flowing via the winding connection line 20 to or from the respective winding.
  • the insertion section 22 extends from the fastening section 11 of the high-voltage bushing 8 into the receiving section 16 of the bushing socket 10 .
  • the plug-in section 22 is designed to be complementary in shape to the receiving section 16, so that the two components fit together with a perfect fit and air or other inclusions can be avoided.
  • the distance between the fastening section and the free end of the high-voltage bushing 8 is denoted as L1.
  • FIG. 4 shows in an example not falling under the claims, the feedthrough socket 10 in an
  • FIG figure 5 shows the housing 2 of the transformer 1 according to FIG figure 1 in a side view.
  • the two high-voltage bushings 6 and 8 can be seen in this view, which are inserted into their associated bushing sockets 10 .
  • the column section 12 extends over a length L2 that, according to the invention, is greater than 3 meters, so that the high-voltage bushings 6, 8 are fit for sufficiently high voltages and have a sufficiently high dielectric strength.
  • the plug-in section 22 has a jacket 25 made of a viscous insulator, which extends the plug-in section 22 to the outside completes, with only the high-voltage conductor 24 protruding from the jacket 25.
  • the viscous insulator of the jacket 25 rests against the inside of the receiving section 16, with the viscous jacket 25 filling up free spaces between the plug-in socket and the plug-in section of the high-voltage bushing, so that air pockets and thus high electric field strengths are avoided.
  • FIG 6 shows the rotationally symmetrical plug-in socket 10 from above.
  • the fastening section 14 is again designed as a conventional flange connection, it also being evident that the receiving section 16 extends downwards from the fastening section 14, i.e. into the oil or interior space 19, with the receiving section 16 tapering to a closed end.
  • the contact part 18 can be seen at the closed end.
  • the contact part 18 is designed as a sleeve and is therefore closed on one side.
  • the inside diameter of the sleeve 18 is slightly larger than the outside diameter of the conductor 24, with resilient contact fingers providing a sufficiently good electrical contact.
  • the receiving section 16 consists of a wall made of an insulating material that is not electrically conductive. During operation, the contact part 18 is at a high-voltage potential, with the housing 2 and thus also the housing cover 15 and the fastening section 14 being at ground potential.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Insulators (AREA)
  • Transformers For Measuring Instruments (AREA)

Description

Die Erfindung betrifft ein elektrisches Gerät zum Anschluss an ein Hochspannungsnetz mit einem mit einer Isolierflüssigkeit befüllbaren Gehäuse, in dem ein Kern mit wenigstens einer Wicklung angeordnet ist, einer an dem Gehäuse befestigten Durchführungssteckbuchse und einer in die Durchführungssteckbuchse einsteckbaren Hochspannungsdurchführung.The invention relates to an electrical device for connection to a high-voltage network with a housing that can be filled with an insulating liquid, in which a core with at least one winding is arranged, a bushing attached to the housing, and a high-voltage bushing that can be inserted into the bushing.

Ein solches elektrisches Gerät ist beispielsweise aus der DE 10 2007 022 641 A1 bereits bekannt. Dort ist ein Transformator offenbart, der Steckbuchsen aufweist, in die Durchführungen zum Anschluss des Transformators an ein Hochspannungsnetz einsteckbar sind. Der Transformator ist als so genannter Wandertransformator ausgeführt, der so ausgelegt ist, dass er zwischen unterschiedlichen Standorten mit möglichst geringem Montageaufwand unter Einhaltung eines vorgegebenen Profils transportiert werden kann. Dem vorbekannten elektrischen Gerät haftet jedoch der Nachteil an, dass die steckbaren Durchführungen nur für Spannungen im unteren Hochspannungsbereich ausgelegt sind.Such an electrical device is, for example, from DE 10 2007 022 641 A1 already known. There, a transformer is disclosed which has sockets into which bushings for connecting the transformer to a high-voltage network can be inserted. The transformer is designed as a so-called traveling transformer, which is designed in such a way that it can be transported between different locations with as little assembly effort as possible while maintaining a specified profile. However, the previously known electrical device has the disadvantage that the pluggable bushings are only designed for voltages in the lower high-voltage range.

Die FR 2 113 911 A1 offenbart einen Transformator als elektrisches Gerät mit zwei Wicklungen 26 und 28, die jeweils einen Kernabschnitt umschließen, die Teile eines geschlossenen Eisenkreises sind. Die Wicklungen sind somit induktiv miteinander gekoppelt. Dabei sind Kernwicklungen in einem Gehäuse oder Tank angeordnet, der mit einem Isolierfluid befüllt ist. Jede Wicklung ist über eine Verbindungsleitung mit dem Hochspannungsleiter einer Hochspannungsdurchführung verbunden, die sich mit ihrem Einführabschnitt durch eine Durchgangsöffnung im Deckel des Tankes in den mit Öl gefüllten Innenraum des Tankes hinein erstreckt. Die Befestigung am Deckel erfolgt mit Hilfe eines Befestigungsabschnittes. Dabei ist die Länge L1 vom Befestigungsabschnitt bis zum freien Ende des Einführabschnittes L1 mit etwa zwei Metern angegeben. Die Länge des Säulenabschnittes der Durchführung, der sich von den Befestigungsmitteln zu einem Freiluftanschluss erstreckt, beträgt fünf Meter.the FR 2 113 911 A1 discloses a transformer electrical apparatus having two windings 26 and 28 each enclosing a core portion which are parts of a closed iron circuit. The windings are thus inductively coupled to one another. In this case, core windings are arranged in a housing or tank which is filled with an insulating fluid. Each winding is connected via a connecting line to the high-voltage conductor of a high-voltage bushing, the insertion section of which extends through a through-opening in the cover of the tank into the oil-filled interior of the tank. It is attached to the cover with the aid of an attachment section. The length L1 from the attachment section to the free end of the insertion section L1 is given as approximately two meters. the The length of the pillar section of the bushing extending from the fastening means to an outdoor connection is five meters.

Die EP 2 442 321 A1 betrifft eine Kalotte für eine Hochspannungsausleitung.the EP 2 442 321 A1 relates to a calotte for a high-voltage lead-out.

Die DE 12 82 170 B beschreibt eine abnehmbare Durchführung für Leistungstransformatoren, wobei die Durchführung mit Befestigungsmitteln am Transformatorkessel lösbar befestigt werden kann. Zwischen der Verbindungsleitung und der Durchführung ist eine Trennstelle vorgesehen, so dass die Durchführung einfach montiert werden kann. Allerdings erstreckt sich die Hochspannungsdurchführung mit ihrem Einführende in den mit Öl gefüllten Tank des Transformators 10 hinein.the DE 12 82 170 B describes a removable bushing for power transformers, wherein the bushing can be releasably attached to the transformer tank with fasteners. A separation point is provided between the connecting line and the bushing so that the bushing can be easily installed. However, the insertion end of the high-voltage bushing extends into the oil-filled tank of the transformer 10 .

Die EP 2 431 982 B1 beschreibt eine Hochspannungsdurchführung mit einem Steckkontakt. Die Durchführung ist in eine Durchführungssteckbuchse einsteckbar, so dass der Steckkontakt der Durchführung elektrisch leitend mit einem Kontaktteil der Steckbuchse verbunden ist. Das Kontaktteil ist wiederum über eine sich im Inneren eines Transformatorgehäuses erstreckende Verbindungsleitung mit einer Primärwicklung des Transformators verbunden. Dabei ist die Durchführungssteckbuchse fest am Transformatorgehäuse montiert und schließt das Transformatorgehäuse dichtend nach außen ab. Auf diese Weise kann das Transformatorgehäuse ohne Durchführung einfach transportiert werden. Vor Ort wird die Durchführung einfach in die Steckbuchse eingesteckt. Dies beschleunigt die Inbetriebnahme des Transformators. Eine aufwändige elektrische Verbindung zwischen der Hochspannungsdurchführung und der Wicklung ist vermieden.the EP 2 431 982 B1 describes a high-voltage bushing with a plug contact. The bushing can be plugged into a bushing so that the plug contact of the bushing is electrically conductively connected to a contact part of the socket. The contact part is in turn connected to a primary winding of the transformer via a connecting line which extends inside a transformer housing. The bushing socket is firmly mounted on the transformer housing and seals the transformer housing from the outside. In this way, the transformer housing can be easily transported without a bushing. The bushing is simply plugged into the socket on site. This speeds up the commissioning of the transformer. A complex electrical connection between the high-voltage bushing and the winding is avoided.

Ein ebensolches System bestehend aus Durchführung und Durchführungssteckbuchse ist in dem Beitrag " A New Separable 170 kV Outdoor Bushing System Creates a MultiPurpose Transformer or Switchgear", Klein et al, PFISTERER Kontaktsysteme GmbH & Co (2006 ) aufgezeigt.A similar system consisting of bushing and bushing is described in the article " A New Separable 170 kV Outdoor Bushing System Creates a MultiPurpose Transformer or Switchgear", Klein et al, PFISTERER Kontaktsysteme GmbH & Co (2006 ) shown.

Weiterer Stand der Technik ist in der JP S60 154511 beschrieben.Further prior art is in JP S60 154511 described.

Aufgabe der Erfindung ist es, ein elektrisches Gerät der eingangs genannten Art bereitzustellen, das auch bei höheren Spannungen eingesetzt werden kann.The object of the invention is to provide an electrical device of the type mentioned at the outset that can also be used at higher voltages.

Die Erfindung löst diese Aufgabe dadurch, dass die Hochspannungsdurchführung einen Befestigungsabschnitt aufweist, mit dem diese an dem Gehäuse und/oder an der Durchführungssteckbuchse befestigbar ist und von dem diese sich mit einem Säulenabschnitt in einer Längsrichtung über eine Länge L2 hinweg zu einem Hochspannungsanschluss erstreckt, wobei die Länge L2 größer als drei Meter ist.The invention achieves this object in that the high-voltage bushing has a fastening section with which it can be fastened to the housing and/or to the bushing socket and from which it extends with a column section in a longitudinal direction over a length L2 to a high-voltage connection, wherein the length L2 is greater than three meters.

Erfindungsgemäß ist ein elektrisches Gerät, beispielsweise ein Transformator oder eine Drossel, bereitgestellt, das für Spannungen oberhalb von 150kV ausgelegt ist. Dazu ist die Hochspannungsdurchführung entsprechend dimensioniert. Insbesondere weist die Hochspannungsdurchführung einen Befestigungsabschnitt auf, mit dem eine Fixierung oder Befestigung der Hochspannungsdurchführung an dem Gehäuse des elektrischen Geräts ermöglicht ist. Um für höhere Spannungen die notwenige Durchschlagsfestigkeit bereitzustellen, weist ein Säulenabschnitt der Hochspannungsdurchführung, der sich von dem Befestigungsabschnitt zu einem Hochspannungsanschluss am freien Ende der Hochspannungsdurchführung in Längsrichtung erstreckt, eine Länge L2 von über 3 Metern auf. Hochspannungsdurchführungen in diesem Spannungsbereich wurden bislang nicht als einsteckbare Komponente ausgeführt. Die hierzu notwenige elektrische Isolierung wurde als zu aufwändig eingestuft. Erfindungsgemäß ist jedoch erstmals ein elektrisches Gerät mit einer einsteckbaren Durchführung auch in höheren Spannungsbereichen bereitgestellt. Die dabei auftretenden Gewichte werden von dem Befestigungsabschnitt aufgenommen.According to the invention, an electrical device, for example a transformer or a choke, is provided which is designed for voltages above 150 kV. The high-voltage bushing is dimensioned accordingly for this. In particular, the high-voltage bushing has a fastening section with which the high-voltage bushing can be fixed or fastened to the housing of the electrical device. In order to provide the necessary dielectric strength for higher voltages, a pillar section of the high-voltage bushing, which extends longitudinally from the fastening section to a high-voltage connection at the free end of the high-voltage bushing, has a length L2 of more than 3 meters. High-voltage bushings in this voltage range have not previously been designed as plug-in components. The electrical insulation required for this was classified as too complex. According to the invention, however, an electrical device with a plug-in bushing is also provided in higher voltage ranges for the first time. The weights that occur are absorbed by the fastening section.

Zweckmäßigerweise erstreckt sich der Säulenabschnitt senkrecht oder rechtwinklig zu einem horizontalen Gehäusedeckel des Gehäuses, so dass das Gewicht der Hochspannungsdurchführung direkt von oben, also senkrecht, in die Durchführungssteckbuchse eingeleitet wird. Das Eigengewicht der Durchführung sorgt somit für eine hohe Anpresskraft innerhalb der Steckbuchse, so dass auf diese Weise eine gute Isolierung durch einen Festkörperverbund bereitgestellt ist. Vorteilhafterweise wird die Hochspannungsdurchführung mit der Durchführungssteckbuchs mittels einer zweckmäßigen lösbaren Verbindung, beispielsweise einer Schraubverbindung, verbunden.The pillar section expediently extends perpendicularly or at right angles to a horizontal housing cover of the housing, so that the weight of the high-voltage bushing is introduced directly from above, ie vertically, into the bushing socket. The weight of the bushing thus ensures a high contact pressure within the socket, so that in this way good insulation is provided by a solid-state composite. Advantageously, the high-voltage bushing is connected to the bushing socket by means of an expedient, detachable connection, for example a screw connection.

Gemäß einer bevorzugten Ausgestaltung führt die Hochspannungsdurchführung über einen Einsteckabschnitt, der zum Einführen in die Durchführungssteckbuchse vorgesehen ist. Mit anderen Worten weist die Hochspannungsdurchführung einen sich ebenfalls in besagter Längsrichtung erstreckenden Einsteckabschnitt auf, mit dem sich die Hochspannungsdurchführung in die Durchführungssteckbuchse über eine Länge L1 hinweg erstreckt, wobei die Länge L1 kürzer ist als 600mm. Im Rahmen dieser Ausführung des erfindungsgemäßen elektrischen Geräts, wurde der Einsteckabschnitt der Hochspannungsdurchführung gegenüber vergleichbaren Hochspannungsdurchführungen im selben Spannungsbereich verkürzt. Diese Verkürzung ermöglicht eine entsprechend kürzer ausgestaltete Durchführungssteckbuchse, die sich mit anderen Worten weniger tief in das Gehäuse des elektrischen Gerätes, also in dessen Ölraum, hinein erstreckt. Die Montage eines Stromwandlers an der Durchführung entfällt bei dieser Ausführung.According to a preferred embodiment, the high-voltage bushing leads via an insertion section that is provided for insertion into the bushing socket. In other words, the high-voltage bushing has an insertion section that also extends in said longitudinal direction, with which the high-voltage bushing extends into the bushing socket over a length L1, the length L1 being shorter than 600 mm. As part of this embodiment of the electrical device according to the invention, the plug-in section of the high-voltage bushing has been shortened compared to comparable high-voltage bushings in the same voltage range. This shortening enables a correspondingly shorter bushing which, in other words, extends less deeply into the housing of the electrical device, ie into its oil chamber. With this version, there is no need to mount a current transformer on the bushing.

Gemäß einer diesbezüglich zweckmäßigen Weiterentwicklung der Erfindung weist jede Durchführungssteckbuchse ein Befestigungsabschnitt zur Befestigung an dem Gehäuse auf, wobei sich ein hohler Aufnahmeabschnitt aus einem elektrisch nichtleitenden Isolierstoff in das Gehäuse hinein erstreckt, wobei in einem geschlossenen und verjüngten Endbereich des Aufnahmeabschnitts ein metallisches Kontaktteil angeordnet ist, das sich durch den Isolierstoff des Aufnahmeabschnitts hindurch erstreckt oder diesen zum geschlossenen Endbereich hin verlängert. Gemäß dieser Ausführung der Erfindung weist jede Durchführungssteckbuchse ein offenes Ende etwa in Höhe des Gehäusedeckels auf, die das Einstecken des Einsteckabschnitts der Hochspannungsdurchführung ermöglicht. In Einsteckrichtung erstreckt sich von dem Befestigungsabschnitt der Durchführungssteckbuchse ein Aufnahmeabschnitt in das Innere des Gehäuses hinein, wobei der Aufnahmeabschnitt aus einem Isolierstoff gefertigt ist, der die notwenige Isolierung zwischen dem im Betrieb auf einem Hochspannungspotenzial liegenden Kontaktstück und dem Gehäuse des Transformators bereitstellt, das sich auf einem Erdpotenzial befindet. Um hier die notwendige Spannungsfestigkeit bereitzustellen, sind der Aufnahmeabschnitt und der Einsteckabschnitt formkomplementär zueinander ausgebildet, so dass aufgrund des Eigengewichts der Hochspannungsdurchführung der Einsteckabschnitt fest gegen die Innenwandung des Aufnahmeabschnitts gepresst wird, um auf diese Weise Spannungsspitzen zwischen Hochspannungsdurchführung und Einsteckbuchse zu vermeiden.According to an expedient further development of the invention in this regard, each bushing has a fastening section for fastening to the housing, with a hollow receiving section made of an electrically non-conductive insulating material extending into the housing, with a metallic contact part being arranged in a closed and tapered end area of the receiving section, which extends through the insulating material of the receiving section extends or extends it towards the closed end area. According to this embodiment of the invention, each bushing socket has an open end approximately at the level of the housing cover, which allows insertion of the plug-in section of the high-voltage bushing. In the insertion direction, a receiving section extends from the fastening section of the bushing into the interior of the housing, with the receiving section being made of an insulating material that provides the necessary insulation between the contact piece, which is at a high voltage potential during operation, and the housing of the transformer, which is located on is at ground potential. In order to provide the necessary dielectric strength here, the receiving section and the plug-in section are designed to complement one another, so that due to the dead weight of the high-voltage bushing, the plug-in section is pressed firmly against the inner wall of the receiving section, in order to avoid voltage peaks between the high-voltage bushing and the plug-in socket.

Vorteilhafterweise ist das Kontaktteil über eine sich innerhalb des Gehäuses erstreckende Wicklungsanschlussleitung mit einer Wicklung verbunden. Durch das Einstecken der Hochspannungsdurchführung in die Einsteckbuchse liegt der Hochspannungsleiter der Hochspannungsdurchführung am Kontaktteil an, so dass der Hochspannungsanschluss der Hochspannungsdurchführung über die Wicklungsanschlussleitung mit einer Wicklung des elektrischen Gerätes verbunden ist.The contact part is advantageously connected to a winding via a winding connection line which extends inside the housing. By plugging the high-voltage bushing into the socket, the high-voltage conductor of the high-voltage bushing rests against the contact part, so that the high-voltage connection of the high-voltage bushing is connected to a winding of the electrical device via the winding connection line.

In einem Beispiel, das nicht unter die Ansprüche fällt, ist die Wicklungsanschlussleitung mit einem Stromwandler bestückt. Dadurch, dass der Stromwandler innerhalb des Gehäuses angeordnet ist, muss der Stromwandler nicht mehr aufwändig bei der Montage des elektrischen Gerätes vor Ort in den Leitungsstrang integriert werden. Mit anderen Worten kann das elektrische Gerät gemäß der Erfindung schnell vor Ort in Betrieb genommen werden. Eine aufwändige Montage von Stromwandlern ist bei dieser Ausführung vermieden. Zweckmäßigerweise sind Montageöffnungen in dem Gehäuse vorgesehen, um nach Ablassen der Isolierflüssigkeit einen Zugriff auf den oder die Stromwandler zu ermöglichen.In an example that does not fall under the claims, the winding connection line is equipped with a current transformer. Due to the fact that the current transformer is arranged inside the housing, the current transformer no longer has to be integrated into the wiring harness in a time-consuming process when the electrical device is installed on site. In other words, the electrical device according to the invention can be put into operation quickly on site. Complex installation of current transformers is avoided with this design. Conveniently are Mounting openings provided in the housing to allow access to the or the current transformer after draining the insulating liquid.

Gemäß einer bevorzugten Ausgestaltung ist der Einsteckabschnitt der Hochspannungsdurchführung von einem zähflüssigen Isolator ummantelt, wobei sich an dem freien Ende des Einsteckabschnitts ein Hochspannungsleiter durch den zähflüssigen Isolator oder mit anderen Worten den Mantel erstreckt. Der zähflüssige oder hochviskose Isolator sorgt als äußerer Mantel für die ausreichende elektrische Isolierung zwischen den aneinander anliegenden isolierenden und formstabilen Feststoffen von Einsteckbuchse und Einsteckabschnitt. Der Isolator ist zweckmäßigerweise eine pastöse schmierfähige Substanz mit Fließeigenschaften. Durch die Fließeigenschaften wird der zähflüssige Isolator in die Fuge zwischen dem Einsteckabschnitt der Hochspannungsdurchführung und dem Aufnahmeabschnitt der Durchführungssteckbuchse gepresst und füllt diese vollständig aus. Zur Aufnahme vom möglicherweise überflüssigen zähflüssigen Isolator weist der Aufnahmeabschnitt ein ausreichend großes Zusatzvolumen mit Freiräumen aus, in welche der zähflüssige Isolator gepresst werden kann. Lufteinschlüsse zwischen Einsteckabschnitt und Aufnahmeabschnitt mit hohen elektrischen Feldstärken im Gefolge können auf diese Weise vermieden werden.According to a preferred embodiment, the plug-in section of the high-voltage bushing is encased by a viscous insulator, with a high-voltage conductor extending through the viscous insulator or, in other words, the casing, at the free end of the plug-in section. The viscous or highly viscous insulator, as the outer shell, ensures adequate electrical insulation between the insulating and dimensionally stable solids of the plug-in socket and the plug-in section lying against one another. The insulator is expediently a pasty, lubricious substance with flow properties. Due to the flow properties, the viscous insulator is pressed into the joint between the plug-in section of the high-voltage bushing and the receiving section of the bushing and fills it completely. To accommodate the viscous insulator that may be superfluous, the receiving section has a sufficiently large additional volume with free spaces into which the viscous insulator can be pressed. In this way, air pockets between the plug-in section and the receiving section, which result in high electrical field strengths, can be avoided.

Weitere zweckmäßige Ausgestaltungen und Vorteile der Erfindung sind Gegenstand der nachfolgenden Beschreibung von Ausführungsbeispielen unter Bezug auf die Figuren, wobei gleiche Bezugszeichen auf gleichwirkende Bauteile verweisen und wobei

Figur 1
ein Ausführungsbeispiel des erfindungsgemäßen elektrischen Gerätes in perspektivischer Darstellung,
Figur 2
das Gehäuse des elektrischen Gerät gemäß Figur 1 in einer Draufsicht,
Figur 3
eine Schnittansicht des Einsteckabschnitts und der Einsteckbuchse einschließlich einer Abschirmung,
Figur 4
eine nicht geschnittene Seitenansicht der Einsteckbuchse mit Hochspannungsdurchführung und Stromwandler, als Beispiel, das nicht unter die Ansprüche fällt.
Figur 5
das Gehäuse gemäß Figur 2 in einer Seitenansicht mit eingeführten Hochspannungsdurchführungen,
Figur 6
den Einsteckabschnitt der Hochspannungsdurchführung sowie den Befestigungsabschnitt und
Figur 7
ein Ausführungsbeispiel der Durchführungssteckbuchse in einer Ansicht von oben zeigen.
Further expedient refinements and advantages of the invention are the subject of the following description of exemplary embodiments with reference to the figures, in which the same reference symbols refer to components with the same effect and in which
figure 1
an embodiment of the electrical device according to the invention in a perspective view,
figure 2
the housing of the electrical device according to figure 1 in a top view,
figure 3
a sectional view of the plug-in section and the plug-in socket including a shield,
figure 4
a non-sectioned side view of the plug-in socket with high-voltage bushing and current transformer, as an example not falling under the claims.
figure 5
the housing according to figure 2 in a side view with introduced high-voltage bushings,
figure 6
the plug-in section of the high-voltage bushing and the fastening section and
figure 7
show an embodiment of the bushing in a view from above.

Figur 1 zeigt in einer perspektivischen Ansicht ein Ausführungsbeispiel des erfindungsgemäßen elektrischen Geräts, das hier als Transformator 1 ausgeführt ist. Der dort gezeigte Transformator 1 weist ein Gehäuse 2 auf, das mit einem Kühlmodul 3, einem Ausdehnungsgefäß 4, einem Hilfsstrommodul 5 und Hochspannungsdurchführungen 6, 7, 8 bestückt ist. Die genannten Komponenten oder Module sind lösbar miteinander verbunden, können somit einfach demontiert und unabhängig voneinander transportiert werden. Zum Schutz der Hochspannungsdurchführungen 6, 7 und 8 und dem in dem Gehäuse angeordneten Aktivteil des Transformators, also der mit der Hochspannungsdurchführung 6 oder 7 verbundenen Oberspannungswicklung sowie der mit der Hochspannungsdurchführung 8 verbundenen Unterspannungswicklung und des Kerns, dessen Schenkel von den jeweiligen Wicklungen umschlossen werden, dienen Ableiter 9, die innerhalb ihres Ableitergehäuses einen nichtlinearen Widerstand aufweisen, der bei Überspannungen von einem nicht leitenden Zustand in einen leitenden Zustand übergeht und somit die parallel zu ihm geschalteten Bauteile schützt. figure 1 shows a perspective view of an embodiment of the electrical device according to the invention, which is designed as a transformer 1 here. The transformer 1 shown there has a housing 2 which is equipped with a cooling module 3, an expansion tank 4, an auxiliary power module 5 and high-voltage bushings 6, 7, 8. The components or modules mentioned are detachably connected to one another and can therefore be easily dismantled and transported independently of one another. To protect the high-voltage bushings 6, 7 and 8 and the active part of the transformer arranged in the housing, i.e. the high-voltage winding connected to the high-voltage bushing 6 or 7 and the low-voltage winding connected to the high-voltage bushing 8 and the core, whose legs are surrounded by the respective windings, arresters 9 are used, which have a non-linear resistance within their arrester housing, which changes over from a non-conductive state to a conductive state in the event of overvoltages and thus protects the components connected in parallel to it.

Die Hochspannungsdurchführungen 6, 7 und 8 sind jeweils als einsteckbare Hochspannungsdurchführungen ausgebildet und können mit ihrem Einsteckende in passende Durchführungssteckbuchsen 10 eingeführt werden. Die Durchführungssteckbuchsen 10 sind rotationssymmetrisch ausgebildet und begrenzen einen zum Gehäusedeckel hin offen liegenden jedoch einseitig geschlossenen Hohlraum, der formkomplementär zu dem Einsteckabschnitt der jeweiligen Hochspannungsdurchführung 6, 7, 8 ausgebildet ist. Die Durchführungssteckbuchsen 10 sind ferner fluiddicht an dem Gehäuse 2 befestigt, so dass der Innen- oder Ölraum des einphasigen Transformators 1 hermetisch, also luft- und flüssigkeitsdicht von der Außenatmosphäre abgeschlossen ist. Am geschlossenen Ende der Durchführungssteckbuchse ist ein figürlich nicht erkennbarer Leitungsbolzen als Kontaktteil gehalten, der wenn die Hochspannungsdurchführung 6, 7 oder 8 in die jeweilige Durchführungssteckbuchse 10 eingeführt ist, in leitendem Kontakt mit dem sich durch die jeweilige Hochspannungsdurchführung 6, 7, 8 erstreckenden Hochspannungsleiter ist. Der besagte Leitungsbolzen erstreckt sich in das Innere des Gehäuses 2, also in dessen Ölraum hinein, wo er in Kontakt mit einer Wicklungsanschlussleitung steht, die somit die Durchführungssteckbuchse elektrisch mit der jeweiligen Ober- oder Unterspannungswicklung des Transformators 1 verbindet.The high-voltage bushings 6, 7 and 8 are each designed as plug-in high-voltage bushings and their insertion end can be inserted into suitable bushing sockets 10. The bushings 10 are of rotationally symmetrical design and delimit a cavity which is open towards the housing cover but is closed on one side and which is designed to complement the plug-in section of the respective high-voltage bushing 6 , 7 , 8 . The bushings 10 are also attached to the housing 2 in a fluid-tight manner, so that the interior or oil space of the single-phase transformer 1 is hermetically, ie air-tight and liquid-tight, sealed off from the outside atmosphere. At the closed end of the bushing, a line bolt that cannot be seen in the figure is held as a contact part, which, when the high-voltage bushing 6, 7 or 8 is inserted into the respective bushing 10, is in conductive contact with the high-voltage conductor that extends through the respective high-voltage bushing 6, 7, 8 . Said line bolt extends into the interior of the housing 2, ie into its oil chamber, where it is in contact with a winding connection line, which thus electrically connects the bushing socket to the respective high-voltage or low-voltage winding of the transformer 1.

Zur Montage und Fixierung der Hochspannungsdurchführung 6, 7 oder 8 weisen diese jeweils einen Befestigungsanschluss 11 auf. Von dem Befestigungsanschluss 11 erstreckt sich ein Säulenabschnitt 12 zu einem Hochspannungsanschluss 13, der in dem gezeigten Ausführungsbeispiel ein Freiluftanschluss ist.For the assembly and fixing of the high-voltage bushing 6, 7 or 8, these each have a fastening connection 11. A pillar section 12 extends from the fastening connection 11 to a high-voltage connection 13, which in the exemplary embodiment shown is an outdoor connection.

Figur 2 zeigt das Gehäuse 2 des Transformators 1 gemäß Figur 1 in einer Draufsicht. In dieser Ansicht ist erkennbar, dass das Gehäuse 2 über drei Einsteckbuchsen 10 verfügt, die in Figur 2 alle mit einem Deckel fluiddicht verschlossen sind. Mit fluiddicht ist hier gemeint, dass der Deckel mittels zweckmäßiger Dichtmittel die Öffnungen luft- und flüssigkeitsdicht verschließt. figure 2 shows the housing 2 of the transformer 1 according to FIG figure 1 in a top view. In this view it can be seen that the housing 2 has three plug-in sockets 10, which are figure 2 all are sealed fluid-tight with a lid. Fluid-tight here means that the cover closes the openings in an airtight and liquid-tight manner by means of appropriate sealing means.

Figur 3 zeigt eine Durchführungssteckbuchse 10 und eine Hochspannungsdurchführung 8 in einer geschnittenen Seitenansicht, wobei die Hochspannungsdurchführung 8 mit einem Einsteckabschnitt 22 in die Durchführungssteckbuchse 10 eingeführt ist. figure 3 shows a bushing 10 and a high-voltage bushing 8 in a sectional side view, the high-voltage bushing 8 being inserted into the bushing 10 with an insertion section 22 .

Es ist erkennbar, dass die Durchführungssteckbuchse 10 einen Befestigungsabschnitt 14 aufweist, mit dem diese fest auf einem Deckel 15 des Gehäuses 2 montiert ist. Hierzu dienen beispielsweise zweckmäßige Schraubverbindungen. Um die Durchführungssteckbuchse 10 luft- und flüssigkeitsdicht an dem Gehäuse 2 zu befestigen, sind figürlich nicht dargestellte Dichtmittel erforderlich, die zwischen dem Deckel 15 und dem als Flansch ausgeführten Befestigungsabschnitt 14 verklemmt sind.It can be seen that the bushing 10 has a fastening section 14 with which it is fixedly mounted on a cover 15 of the housing 2 . Expedient screw connections are used for this purpose, for example. In order to fasten the lead-through socket 10 to the housing 2 in an airtight and liquid-tight manner, sealing means (not shown in the figures) are required, which are clamped between the cover 15 and the fastening section 14 designed as a flange.

Jede Durchführungssteckbuchse 10 weist ferner einen Aufnahmeabschnitt 16 auf, der aus einem elektrisch nichtleitenden Material besteht. Dabei verjüngt sich der Aufnahmeabschnitt 16 zu einem geschlossenen Ende 17 hin. An dem geschlossenen Ende 17 wird die Wandung des Aufnahmeabschnitts 16 von einem bolzenförmigen Kontaktteil 18 durchragt. An seinem in den Innenraum 19 oder Ölraum des Gehäuses 2 hineinragenden Abschnitt ist das Kontaktteil 18 mit einer Wicklungsanschlussleitung 20 und einer Abschirmkalotte 21 als Abschirmung verbunden. Die Wicklungsanschlussleitung 20 ist ferner mit einem Stromwandler 26 bestückt, der in Figur 4 gezeigt ist. Der Stromwandler 26 ist somit fest im Gehäuse installiert und dient zur Erfassung eines über die Wicklungsanschlussleitung 20 zur oder von der jeweiligen Wicklung fließenden elektrischen Stroms.Each feedthrough socket 10 further includes a receiving portion 16 made of an electrically non-conductive material. The receiving section 16 tapers towards a closed end 17 . At the closed end 17 the wall of the receiving section 16 is penetrated by a bolt-shaped contact part 18 . The contact part 18 is connected to a winding connecting line 20 and a shielding cap 21 as shielding on its section which protrudes into the interior 19 or oil chamber of the housing 2 . The winding connection line 20 is also fitted with a current transformer 26, which is figure 4 is shown. The current transformer 26 is thus permanently installed in the housing and is used to detect an electric current flowing via the winding connection line 20 to or from the respective winding.

Der Einsteckabschnitt 22 erstreckt sich von dem Befestigungsabschnitt 11 der Hochspannungsdurchführung 8 in den Aufnahmeabschnitt 16 der Durchführungssteckbuchse 10 hinein. Dabei ist der Einsteckabschnitt 22 formkomplementär zum Aufnahmeabschnitt 16 ausgebildet, so dass es zu einem passgenauen Anliegen der beiden Komponenten aneinander kommt und Luft oder sonstige Einschlüsse vermieden werden können. Der Abstand zwischen dem Befestigungsabschnitt und dem freien Ende der Hochspannungsdurchführung 8 ist als L1 bezeichnet.The insertion section 22 extends from the fastening section 11 of the high-voltage bushing 8 into the receiving section 16 of the bushing socket 10 . The plug-in section 22 is designed to be complementary in shape to the receiving section 16, so that the two components fit together with a perfect fit and air or other inclusions can be avoided. The distance between the fastening section and the free end of the high-voltage bushing 8 is denoted as L1.

Figur 4 zeigt in einem Beispiel, das nicht unter die Ansprüche fällt, die Durchführungssteckbuchse 10 in einer unge- figure 4 shows in an example not falling under the claims, the feedthrough socket 10 in an

schnittenen Seitenansicht. In dieser Ansicht ist die Ausgestaltung des Aufnahmeabschnitts 16 sowie des Stromwandlers 26 und dessen Lage zu den restlichen Komponenten besonders gut zu erkennen. Im Übrigen gelten die zu Figur 3 gemachten Ausführungen hier entsprechend.sectioned side view. In this view, the design of the receiving section 16 and the current transformer 26 and its position in relation to the remaining components can be seen particularly well. Incidentally, the apply figure 3 according to the statements made here.

Figur 5 zeigt das Gehäuse 2 des Transformators 1 gemäß Figur 1 in einer Seitenansicht. In dieser Ansicht sind die beiden Hochspannungsdurchführungen 6 und 8 erkennbar, die in ihre zugeordneten Durchführungssteckbuchsen 10 eingefügt sind. Insbesondere ist erkennbar, dass sich der Säulenabschnitt 12 über eine Länge L2 hinweg erstreckt, die erfindungsgemäß größer als 3 Meter ist, so dass die Hochspannungsdurchführungen 6,8 für ausreichend hohe Spannungen ertüchtigt sind und eine ausreichend hohe Spannungsfestigkeit aufweist. figure 5 shows the housing 2 of the transformer 1 according to FIG figure 1 in a side view. The two high-voltage bushings 6 and 8 can be seen in this view, which are inserted into their associated bushing sockets 10 . In particular, it can be seen that the column section 12 extends over a length L2 that, according to the invention, is greater than 3 meters, so that the high-voltage bushings 6, 8 are fit for sufficiently high voltages and have a sufficiently high dielectric strength.

Figur 6 verdeutlicht den Einsteckabschnitt 22 der Hochspannungsdurchführung 8 exemplarisch für alle Hochspannungsdurchführungen 6,7,8 in einer Seitenansicht. In dieser Ansicht ist insbesondere erkennbar, dass die Hochspannungsdurchführung 8 einen Hochspannungsleiter 24 aufweist, der sich von dem Hochspannungsanschluss 13 am anderen freien Ende der Hochspannungsdurchführung 8 durch den gesamten Isolierkörper der Hochspannungsdurchführung 8 hindurch erstreckt. Der Hochspannungsleiter 24 gerät in einer eingesteckten Stellung an seinem unteren Ende 26 in Kontakt mit dem Kontaktteil 18 der Durchführungssteckbuchse 10. Darüber hinaus ist der Befestigungsabschnitt 11 der Hochspannungsdurchführung 8 grob skizziert, der in dem gezeigten Ausführungsbeispiel als Flansch ausgeführt ist. Der Flansch 11 ist über eine Schraubverbindung fest mit dem Gehäusedeckel 15 verbunden werden kann. Der Abstand L1 zwischen dem unteren Ende 26 und dem Befestigungsabschnitt 11 ist vorteilhafterweise kürzer als 600 mm. figure 6 shows the insertion section 22 of the high-voltage bushing 8 as an example for all high-voltage bushings 6,7,8 in a side view. In this view it can be seen in particular that the high-voltage bushing 8 has a high-voltage conductor 24 which extends from the high-voltage connection 13 at the other free end of the high-voltage bushing 8 through the entire insulating body of the high-voltage bushing 8 . In an inserted position, the high-voltage conductor 24 comes into contact at its lower end 26 with the contact part 18 of the bushing 10. In addition, the fastening section 11 of the high-voltage bushing 8 is roughly outlined, which is designed as a flange in the exemplary embodiment shown. The flange 11 can be firmly connected to the housing cover 15 via a screw connection. The distance L1 between the lower end 26 and the attachment portion 11 is advantageously shorter than 600 mm.

Der Einsteckabschnitt 22 weist einen Mantel 25 aus einem zähflüssigen Isolator auf, der den Einsteckabschnitt 22 nach außen abschließt, wobei lediglich der Hochspannungsleiter 24 aus dem Mantel 25 herausragt. Nachdem Einführen des Einsteckabschnitts 22 liegt der zähflüssige Isolator des Mantels 25 an der Innenseite des Aufnahmeabschnitts 16 an, wobei der zähflüssige Mantel 25 Freiräume zwischen der Einsteckbuchse und dem Einsteckabschnitt der Hochspannungsdurchführung ausfüllt, so dass Lufteinschlüsse und somit hohe elektrische Feldstärken vermieden sind.The plug-in section 22 has a jacket 25 made of a viscous insulator, which extends the plug-in section 22 to the outside completes, with only the high-voltage conductor 24 protruding from the jacket 25. After inserting the plug-in section 22, the viscous insulator of the jacket 25 rests against the inside of the receiving section 16, with the viscous jacket 25 filling up free spaces between the plug-in socket and the plug-in section of the high-voltage bushing, so that air pockets and thus high electric field strengths are avoided.

Figur 6 zeigt die rotationssymmetrische Einsteckbuchse 10 von oben. In dieser Ansicht sind insbesondere der Gehäusedeckel 15 und der Befestigungsabschnitt 14 der Einsteckbuchse 10 besonders gut erkennbar. Der Befestigungsabschnitt 14 ist wieder als übliche Flanschverbindung ausgeführt, wobei ferner erkennbar ist, dass sich der Aufnahmeabschnitt 16 von dem Befestigungsabschnitt 14 nach unten, also in den Öl- oder Innenraum 19 hinein, erstreckt, wobei der Aufnahmeabschnitt 16 sich zu einem geschlossenen Ende verjüngt. An dem geschlossenen Ende ist das Kontaktteil 18 erkennbar. Das Kontaktteil 18 ist als Hülse ausgebildet und somit einseitig geschlossen. Der Innendurchmesser der Hülse 18 ist etwas größer als der Außendurchmesser des Leiters 24, wobei federnde Kontaktfinder einen ausreichend guten elektrischen Kontakt bereitstellen. Der Aufnahmeabschnitt 16 besteht aus einer Wandung aus einem Isolierstoff, der elektrisch nicht leitet. Bei Betrieb befindet sich das Kontaktteil 18 auf einem Hochspannungspotenzial, wobei das Gehäuse 2 und somit auch der Gehäusedeckel 15 und der Befestigungsabschnitt 14 auf Erdpotenzial liegen. figure 6 shows the rotationally symmetrical plug-in socket 10 from above. In this view, in particular the housing cover 15 and the fastening section 14 of the plug-in socket 10 can be seen particularly well. The fastening section 14 is again designed as a conventional flange connection, it also being evident that the receiving section 16 extends downwards from the fastening section 14, i.e. into the oil or interior space 19, with the receiving section 16 tapering to a closed end. The contact part 18 can be seen at the closed end. The contact part 18 is designed as a sleeve and is therefore closed on one side. The inside diameter of the sleeve 18 is slightly larger than the outside diameter of the conductor 24, with resilient contact fingers providing a sufficiently good electrical contact. The receiving section 16 consists of a wall made of an insulating material that is not electrically conductive. During operation, the contact part 18 is at a high-voltage potential, with the housing 2 and thus also the housing cover 15 and the fastening section 14 being at ground potential.

Claims (5)

  1. Electrical device (1) designed for voltages above 150 kV, for connection to a high-voltage network, comprising
    - a housing (2), which can be filled with an insulating liquid and in which a core with at least one winding is arranged,
    - a bushing plug-in socket (10), which is fastened to the housing (2), and
    - a high-voltage bushing (6, 7, 8), which is plugged into the bushing plug-in socket (10),
    wherein
    the high-voltage bushing (6, 7, 8) has a fastening section (11), by way of which said high-voltage bushing is detachably fastened to the housing (2) or to the bushing plug-in socket (10) and from which said high-voltage bushing extends, by way of a column section (12), in a longitudinal direction over a length L2 to a high-voltage connection (13), wherein the length L2 is greater than three metres.
  2. Electrical device (1) according to Claim 1,
    characterized in that
    the high-voltage bushing (6, 7, 8) inserted into the bushing plug-in socket (10) extends, by way of a plug-in section (22) extending in the longitudinal direction, into the bushing plug-in socket (10) over a length L1, wherein the length L1 is less than 600 mm.
  3. Electrical device (1) according to either one of the preceding claims,
    characterized in that
    each bushing plug-in socket (10) has a fastening section (14) for fastening to the housing (2), from which fastening section a hollow receiving section (16) made of an electrically nonconductive insulating material extends into the housing (2), wherein a metallic contact part (18) is arranged at a closed tapered end region (17), said contact part extending through the insulating material of the receiving section (16) or lengthening the latter towards the closed end region.
  4. Electrical device (1) according to the preceding claim, characterized in that
    the contact part (18) is connected to a winding via a winding connecting line (20) extending inside the housing (2).
  5. Electrical device (1) according to one of the preceding claims,
    characterized in that
    the plug-in section (22) of each high-voltage bushing (6, 7, 8) has a sheath (25) made of a viscous insulator, wherein a high-voltage conductor (24) extends through the sheath (25) at the free end of the plug-in section (22).
EP17720444.3A 2016-04-29 2017-04-26 Transformer with insertable high-voltage bushings Active EP3427276B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016207405.9A DE102016207405A1 (en) 2016-04-29 2016-04-29 Transformer with plug-in high-voltage feedthroughs
PCT/EP2017/059845 WO2017186751A1 (en) 2016-04-29 2017-04-26 Transformer with insertable high-voltage bushings

Publications (2)

Publication Number Publication Date
EP3427276A1 EP3427276A1 (en) 2019-01-16
EP3427276B1 true EP3427276B1 (en) 2022-01-19

Family

ID=58645053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17720444.3A Active EP3427276B1 (en) 2016-04-29 2017-04-26 Transformer with insertable high-voltage bushings

Country Status (7)

Country Link
US (1) US10685772B2 (en)
EP (1) EP3427276B1 (en)
CN (1) CN109074938B (en)
BR (1) BR112018071961B1 (en)
CA (1) CA3022260C (en)
DE (1) DE102016207405A1 (en)
WO (1) WO2017186751A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018200587A1 (en) 2018-01-15 2019-07-18 Siemens Aktiengesellschaft Cable drum for a high voltage cable
WO2019137623A1 (en) 2018-01-15 2019-07-18 Siemens Aktiengesellschaft Transportable power transformer unit
DE102018201224A1 (en) * 2018-01-26 2019-08-01 Siemens Aktiengesellschaft Plug-in high-voltage bushing and electrical device with the plug-in high-voltage bushing
DE102018201477A1 (en) * 2018-01-31 2019-08-01 Siemens Aktiengesellschaft Electrical device with adapter
DE102018211741A1 (en) 2018-07-13 2020-01-16 Siemens Aktiengesellschaft Electrical connector and arrangement with an electrical connector

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1859969A (en) * 1929-05-18 1932-05-24 Condit Electrical Mfg Corp Unitary transforming and circuit interrupting apparatus
DE1282170B (en) 1964-08-25 1968-11-07 Licentia Gmbh Removable bushing for high voltage transformers
US3621426A (en) 1970-11-12 1971-11-16 Westinghouse Electric Corp Transformer with bushing compartment
US3914467A (en) * 1971-06-22 1975-10-21 Matsushita Electric Ind Co Ltd Method of making resin encapsulated electric coil
US4298853A (en) * 1980-03-27 1981-11-03 General Electric Company Compact high voltage shunt reactor
JPS60154511A (en) 1984-01-25 1985-08-14 Toshiba Corp Transformer
US6696925B1 (en) * 2002-02-15 2004-02-24 Lynn-Edward Professional Services, Inc. Electrical revenue meter and instrument transformers mobile station
DE102007022641A1 (en) 2007-05-15 2008-11-20 Areva Energietechnik Gmbh Electrical transformer i.e. hermetic transformer, has plug part inserted into plug connector and connected with bushing that is formed in pluggable and/or unpluggable manner, where connector is connected with housing in liquid-tight manner
EP2431982B1 (en) * 2010-09-21 2014-11-26 ABB Technology AG Plugable feedthrough and high voltage assembly with such a feedthrough
EP2445321A1 (en) 2010-10-13 2012-04-25 Innovation & Infinity Global Corp. Conductive circuits for a touch panel and the manufacturing method thereof
EP2442321B1 (en) 2010-10-15 2012-12-05 ABB Technology AG Feedthrough for high voltage discharge lines in oil transformers
CN201975241U (en) * 2010-12-29 2011-09-14 天威云南变压器股份有限公司 Oil-immersed transformer
JP5925443B2 (en) * 2011-08-02 2016-05-25 株式会社東芝 Static induction electrical device and method of manufacturing the same
PL2850624T3 (en) * 2012-05-14 2016-10-31 Transformer with bushing compartment
US9601912B2 (en) * 2014-06-23 2017-03-21 Schneider Electric USA, Inc. Compact transformer bushing
WO2016065143A2 (en) * 2014-10-24 2016-04-28 Abb Technology Ag A hardened inductive device and systems and methods for protecting the inductive device from catastrophic events
CN205080970U (en) * 2015-11-03 2016-03-09 重庆华万伦电器有限公司 Refrigeration formula transformer case

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3427276A1 (en) 2019-01-16
US20170316862A1 (en) 2017-11-02
CA3022260A1 (en) 2017-11-02
BR112018071961B1 (en) 2023-04-25
CN109074938A (en) 2018-12-21
US10685772B2 (en) 2020-06-16
BR112018071961A2 (en) 2019-02-05
WO2017186751A1 (en) 2017-11-02
CN109074938B (en) 2023-04-07
CA3022260C (en) 2021-02-16
DE102016207405A1 (en) 2017-11-02

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