EP3002827B1 - Method for making an electrical connection of a ferrule with a transposed conductor - Google Patents

Method for making an electrical connection of a ferrule with a transposed conductor Download PDF

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Publication number
EP3002827B1
EP3002827B1 EP15185709.1A EP15185709A EP3002827B1 EP 3002827 B1 EP3002827 B1 EP 3002827B1 EP 15185709 A EP15185709 A EP 15185709A EP 3002827 B1 EP3002827 B1 EP 3002827B1
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EP
European Patent Office
Prior art keywords
ferrule
transposed conductor
individual conductors
pressing
conductor
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EP15185709.1A
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German (de)
French (fr)
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EP3002827A1 (en
Inventor
Michael Rösner
Jörg Harthun
Thorsten Decker
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General Electric Technology GmbH
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Alstom Technology AG
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Publication of EP3002827A1 publication Critical patent/EP3002827A1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H01R43/05—Crimping apparatus or processes with wire-insulation stripping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F2027/2838—Wires using transposed wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads

Definitions

  • the invention relates to a method for producing an electrical connection of an end sleeve with a twist conductor and an arrangement comprising an end sleeve and a twist conductor.
  • a method for producing an electrical conductor provided with insulation is known.
  • a liquid additive is applied to a place to be kept free on a liquid connecting agent.
  • a mixture of connecting agent and additive is formed.
  • the liquid connecting agent with the mixture is then subjected to a solidification process.
  • the mixture is then mechanically removed from the point of the conductor to be kept free.
  • Trunk conductors such as, for example, drill conductors for producing transformer windings
  • drill conductors for producing transformer windings
  • connection coating which is applied at least between two flat sides, in order to form a subset.
  • the DE 27 23 029 A1 relates to an electrical connection of painted and unpainted wires by means of a metallic connector sleeve.
  • a cable harness is known with a number of insulated cables, the conductors of which are partially exposed.
  • the wiring harness includes a metal leaf to which the partially exposed conductors are connected.
  • a method for connecting an electrical conductor to a pin of a connector is known.
  • the pin has a sleeve for receiving one end of the conductor.
  • the sleeve is crimped onto the conductor.
  • an electrically conductive adhesive is introduced into the sleeve.
  • the object of the invention is to improve the connection with drill conductors.
  • Figure 1 shows a bundle conductor 2 and an end sleeve 4 in schematic form.
  • the cross section AA of the bundle conductor 2 is shown below in Figure 2 explained in more detail.
  • the cross section BB through the end sleeve 4 is in the Figures 4 to 6 explained in more detail.
  • the end sleeve 2 is provided to establish an electrical connection with the bundle conductor 2. In the x direction, the end sleeve 4 has a further electrical connection, which is not explained in detail.
  • An inner layer 18 is also referred to as a sword, consists of paper and serves in the area of the transformer winding so that the individual conductors 10 do not damage their insulation by rubbing against one another.
  • the individual conductors of the bundle conductor 2 and the end sleeve 4 are electrically conductive and comprise or consist of, for example, copper.
  • the inner contour 8 can have electrically conductive means, such as teeth, knobs or cutting, which move from outside through the electrical insulation of the individual conductors when the end sleeve 4 is pressed, and the side faces of the individual conductors in the region of the outer contour of the bundle conductor 2 with the end sleeve 4 electrical contact.
  • the insulation 20 advantageously does not have to be removed here. Due to the removal in the area of the outer contour, less heat is generated during a grinding process, since the entire individual conductor does not have to be ground down.
  • Figure 2 shows the first cross section AA Figure 1 ,
  • the bundle conductor 2 has a number of individual conductors 10 which are essentially rectangular in cross section and are electrically insulated from one another.
  • a first side surface 12 is oriented in the z direction.
  • a second side surface 13 is oriented in the y direction.
  • a third side surface 14 is oriented counter to the z direction.
  • a fourth side surface 15 is oriented against the y direction. All side surfaces 12, 13, 14 and 15 are encased by electrical insulation 20, which is designed, for example, as an insulating lacquer.
  • the individual conductors 10 run at least in sections along the bundle conductor 2, that is to say essentially parallel to one another in the x direction.
  • the yz positions of the individual conductors 10 are interchanged in the course of the bundle conductor 2 in order, for example, to avoid losses when using a stranded conductor as part of a transformer winding of a power transformer.
  • the present description can be applied not only to triple conductors but also to other bundle conductors 2 such as, for example, twin conductors, triple conductors, double cables or other bundle conductors.
  • Figure 3 shows the bundle conductor 2 in a schematic form Figure 2 , the insulation 20 having been removed along an outer contour of the bundle conductor 2.
  • the side surfaces 12a, 13b to 13i, 14i and 14j and 15j to 15 s of the respective individual conductors 10 are therefore exposed.
  • the electrical insulation 20 in the region of the end 6 of the bundle conductor 2 has thus been removed at least in sections.
  • the end 6 can be inserted stripped into the end sleeve 4.
  • the end 6 of the bundle conductor 2 is used to establish an electrical connection between each of the individual conductors 10 via the exposed and stripped side faces and the end sleeve 4 substantially orthogonal to the exposed and opposite side faces 12 and 14 and / or the exposed and opposite side faces 13 and 15 the respective individual conductor 10 pressure-contacted. There is therefore pressure contact in the z direction and / or in the y direction.
  • a rapid and reliable electrical contacting of all individual conductors 10 with the end sleeve 4 can advantageously be carried out in this way.
  • the insulation in the area of the outer contour of the bundle conductor 2 can be removed, for example, by grinding, burning or sandblasting. By removing only a part of the insulation 20 with respect to a single individual conductor 10, it is advantageously achieved that clean and safe contacting takes place.
  • each of the individual conductors 10 can also be completely freed from the insulation 20.
  • the rectangular structure of the individual conductors 10 can also be used here in order to advantageously achieve a pressure and flat pressure contact with the outwardly facing side surfaces of the individual conductors 10.
  • a blasting device (not shown) can advantageously be used, into which the end 6 is held before the assembly with the end sleeve 4 for the external removal of the insulation 20.
  • a crimp connection is produced by means of an external pressure on the end sleeve 4.
  • the end 6 can also be pressurized by a differently designed clamping connection in the y direction and / or in the z direction in order to realize both a mechanical and an electrical connection of the individual conductors 10 to the end sleeve 4.
  • it can be clamped like an elevator clamp.
  • Figure 4 shows the end 6 Figure 3 , as it is received in the substantially rectangular inner contour 8 of the end sleeve 4, and wherein a flat pressure in the z-direction and y-direction realizes a crimp connection. Furthermore, an electrically conductive insert 24 is inserted between the inner contour 8 of the end sleeve 4 and the stripped bundle conductor 2.
  • the insert 24 advantageously enables an increase in the degree of filling to improve the pressing effect and thus the contact. In addition, the insert 24 guarantees the electrical contact.
  • the variety of variants of the bundle conductor 2 and the end sleeves 4 can advantageously be reduced by different sizes of the insert 24 by a corresponding size adjustment by means of the insert 24.
  • Figure 5 shows the end 6 Figure 3 , as it is accommodated in the substantially rectangular inner contour 8 of the end sleeve 4, an insert 26 being arranged between the inner contour 8 and the end 6 against the z direction.
  • the insert 26 can also be made of a non-conductive material, since the individual conductors 10i and 10j can already be contacted electrically in the opposite direction and in the y direction with the inner contour 8.
  • the supplements 24 and / or 26 can of course also in a different position than in the Figures 4 and 5 shown to be arranged. Of course, several supplements 24 and / or 26 can also be provided.
  • Figure 6 shows an embodiment Figure 4
  • the outer pressure of the end sleeve 4 was carried out by means of a pressing tool which has a convex pressing contour.
  • the end sleeve 4 has a cross section Figure 6 after pressing concave side contours 28, whereby the inner contour 8 is formed accordingly and contacting of all individual conductors 10 with the inner contour 8 of the end sleeve 4 is improved.
  • Figure 7 shows a first schematic flow chart.
  • a first step 30 the electrical insulation 20 in the region of the end 6 of the bundle conductor 2 is removed at least in sections.
  • the end 6 is inserted into the end sleeve 4.
  • the bundle conductor 2 is pressure-contacted substantially orthogonally to the side surfaces 12, 14 and / or 13, 15 of the individual conductors 10 in order to produce a crimp connection.
  • Figure 8 shows a second schematic flow chart.
  • the end 6 is introduced into the inner contour 8, which has electrically conductive means, such as teeth, knobs or cutters, which move through the electrical insulation of the individual conductors from the outside when the end sleeve 4 is pressed.
  • the electrical insulation 20 in the region of the end 6 of the bundle conductor 2 is removed at least in sections by the aforementioned means and by applying pressure essentially orthogonally to the side surfaces 12, 14 and / or 13, 15.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Processing Of Terminals (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer elektrischen Verbindung einer Endhülse mit einem Drillleiter und eine Anordnung umfassend eine Endhülse und einem Drillleiter. Aus der DE 10 2004 054 527 B4 ist ein Verfahren zur Herstellung eines mit einer Isolierung versehenen elektrischen Leiters bekannt. Ein flüssiges Zusatzmittel wird auf eine freizuhaltende Stelle auf ein flüssiges Verbindungsmittel aufgetragen. Es bildet sich ein Gemisch aus Verbindungsmittel und Zusatzmittel. Anschließend wird das flüssige Verbindungsmittel mit dem Gemisch einem Verfestigungsprozess unterzogen. Danach wird das Gemisch von der freizuhaltenden Stelle des Leiters mechanisch entfernt.The invention relates to a method for producing an electrical connection of an end sleeve with a twist conductor and an arrangement comprising an end sleeve and a twist conductor. From the DE 10 2004 054 527 B4 a method for producing an electrical conductor provided with insulation is known. A liquid additive is applied to a place to be kept free on a liquid connecting agent. A mixture of connecting agent and additive is formed. The liquid connecting agent with the mixture is then subjected to a solidification process. The mixture is then mechanically removed from the point of the conductor to be kept free.

Bündelleiter, wie beispielsweise Drillleiter zur Herstellung von Transformatorwicklungen sind bekannt. So ist aus der EP 2 325 949 B1 ein Drillleiter bekannt, bei dem wenigstens zwei Kabel mittels einer Verbindungsbeschichtung, die zumindest zwischen zwei flachen Seiten aufgetragen ist, fest miteinander verbunden sind, um einen Teilsatz zu bilden.Trunk conductors, such as, for example, drill conductors for producing transformer windings, are known. So is from the EP 2 325 949 B1 a drill conductor is known in which at least two cables are firmly connected to one another by means of a connection coating which is applied at least between two flat sides, in order to form a subset.

Aus der CN 101 604 572 A ist ein Verfahren zur Verbindung einer Leitung mit einem Kabel eines Trockentransformators bekannt.From the CN 101 604 572 A. a method for connecting a line to a cable of a dry transformer is known.

Die DE 27 23 029 A1 betrifft eine elektrische Verbindung lackierter und unlackierter Drähte mittels einer metallischen Verbinderhülse.The DE 27 23 029 A1 relates to an electrical connection of painted and unpainted wires by means of a metallic connector sleeve.

Aus der EP 2 192 601 A1 ist ein Kabelbaum mit einer Anzahl von isolierten Kabeln bekannt, deren Leiter teilweise freigelegt sind. Der Kabelbaum umfasst ein metal leaf, mit dem die teilweise freigelegten Leiter verbunden sind.From the EP 2 192 601 A1 a cable harness is known with a number of insulated cables, the conductors of which are partially exposed. The wiring harness includes a metal leaf to which the partially exposed conductors are connected.

Aus der DE 691 08 110 T2 ist ein Verfahren zum Verbinden eines elektrischen Leiters mit einem Stift eines Verbinders bekannt. Der Stift hat eine Hülse zur Aufnahme eines Endes des Leiters. Die Hülse wird auf den Leiter aufgequetscht. Vor dem Aufquetschen der Hülse wird ein elektrisch leitender Kleber in die Hülse eingebracht.From the DE 691 08 110 T2 a method for connecting an electrical conductor to a pin of a connector is known. The pin has a sleeve for receiving one end of the conductor. The sleeve is crimped onto the conductor. Before the sleeve is crimped on, an electrically conductive adhesive is introduced into the sleeve.

Aufgabe der Erfindung ist es, die Verbindung mit Drillleitern zu verbessern.The object of the invention is to improve the connection with drill conductors.

Die der Erfindung zu Grunde liegende Aufgabe wird durch ein Verfahren nach dem Anspruch 1 und eine Anordnung nach dem Anspruch 11 gelöst. Vorteilhafte Weiterbildungen sind in den Unteransprüchen angegeben. Für die Erfindung wichtige Merkmale finden sich ferner in der nachfolgenden Beschreibung und in den Zeichnungen. Dadurch, dass ein Bündelleiter im Wesentlichen orthogonal zu Seitenflächen der Einzelleiter druckkontaktiert wird, wird vorteilhaft die Struktur des Bündelleiters ausgenutzt, um eine sicherere elektrische Kontaktierung zwischen allen Einzelleitern und einer Endhülse zu realisieren. Gleichzeitig bleibt die Struktur des Bündelleiters im Wesentlichen bestehen. Im Vergleich zu einer Vorpressung z.B. zur Verrundung, um eine Aufnahme in einer runden Presshülse zu ermöglichen, und anschließenden Herstellung einer Quetschverbindung kann eine Materialverjüngung und Materialermüdung im Bereich der Einzelleiter vermieden werden. Vorteilhaft werden alle Einzelleiter kontaktiert. Vorteilhaft kann hierdurch Zeit bei der Montage eingespart werden und es muss nur in geringem Maße eine Isolation abgetragen werden, weshalb sich sowohl Sauberkeit als auch Arbeitssicherheit verbessern.The object on which the invention is based is achieved by a method according to claim 1 and an arrangement according to claim 11. Advantageous further developments are specified in the subclaims. For Features important to the invention can also be found in the following description and in the drawings. Because a bundle conductor is pressure-contacted essentially orthogonally to the side faces of the individual conductors, the structure of the bundle conductor is advantageously used in order to achieve a more reliable electrical contact between all individual conductors and an end sleeve. At the same time, the structure of the bundle conductor remains essentially the same. In comparison to a pre-pressing, for example for rounding, in order to enable a reception in a round press sleeve, and the subsequent production of a crimp connection, material tapering and material fatigue in the area of the individual conductors can be avoided. All individual conductors are advantageously contacted. This advantageously saves time during assembly and only a small amount of insulation has to be removed, which is why both cleanliness and occupational safety are improved.

Weitere Merkmale, Anwendungsmöglichkeiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen der Erfindung, die in den Figuren der Zeichnung dargestellt sind. Es werden für funktionsäquivalente Größen und Merkmale in allen Figuren auch bei unterschiedlichen Ausführungsformen die gleichen Bezugszeichen verwendet.Further features, possible applications and advantages of the invention result from the following description of exemplary embodiments of the invention, which are shown in the figures of the drawing. It will also be used for functionally equivalent sizes and features in all figures different embodiments used the same reference numerals.

Nachfolgend werden beispielhafte Ausführungsformen der Erfindung unter Bezugnahme auf die Zeichnung erläutert. In der Zeichnung zeigen

  • Figur 1 zeigt einen Bündelleiter und eine Endhülse in schematischer Form.
  • Figur 2 zeigt einen ersten Querschnitt aus Figur 1.
  • Figur 3 zeigt den ersten Querschnitt aus Figur 1.
  • Figur 4 zeigt einen zweiten Querschnitt aus Figur 1.
  • Figur 5 zeigt einen zweiten Querschnitt aus Figur 1.
  • Figur 6 zeigt einen zweiten Querschnitt aus Figur 1.
  • Figur 7 zeigt ein schematisches Ablaufdiagramm.
  • Figur 8 zeigt ein schematisches Ablaufdiagramm.
Exemplary embodiments of the invention are explained below with reference to the drawing. Show in the drawing
  • Figure 1 shows a bundle conductor and an end sleeve in schematic form.
  • Figure 2 shows a first cross section Figure 1 ,
  • Figure 3 shows the first cross section Figure 1 ,
  • Figure 4 shows a second cross section Figure 1 ,
  • Figure 5 shows a second cross section Figure 1 ,
  • Figure 6 shows a second cross section Figure 1 ,
  • Figure 7 shows a schematic flow diagram.
  • Figure 8 shows a schematic flow diagram.

Figur 1 zeigt einen Bündelleiter 2 und eine Endhülse 4 in schematischer Form. Der Querschnitt A-A des Bündelleiters 2 wird nachfolgend in Figur 2 näher erläutert. Der Querschnitt B-B durch die Endhülse 4 wird in den Figuren 4 bis 6 näher erläutert. Die Endhülse 2 ist dazu vorgesehen, um eine elektrische Verbindung mit dem Bündelleiter 2 herzustellen. In x-Richtung weist die Endhülse 4 eine weitere, nicht näher erläuterte elektrische Verbindung auf. Figure 1 shows a bundle conductor 2 and an end sleeve 4 in schematic form. The cross section AA of the bundle conductor 2 is shown below in Figure 2 explained in more detail. The cross section BB through the end sleeve 4 is in the Figures 4 to 6 explained in more detail. The end sleeve 2 is provided to establish an electrical connection with the bundle conductor 2. In the x direction, the end sleeve 4 has a further electrical connection, which is not explained in detail.

Eine elektrische Isolierung im Bereich eines Endes 6 des Bündelleiters 2 wird, wie in Figur 3 gezeigt, zumindest abschnittsweise entfernt. Das Ende 6 wird in eine Innenkontur 8 der Endhülse 4 eingeführt. Der Bündelleiter 2 wird zur Herstellung einer elektrischen Verbindung zwischen jedem der Einzelleiter und der Endhülse 4 im Wesentlichen orthogonal zu Seitenflächen der Einzelleiter druckkontaktiert. Eine innenliegende Schicht 18 wird auch als Schwert bezeichnet, besteht aus Papier und dient im Bereich der Transformatorwicklung dazu, dass die Einzelleiter 10 nicht ihre Isolation durch ein Aneinanderreiben verletzen. Die Einzelleiter des Bündelleiters 2 und die Endhülse 4 sind elektrisch leitfähig und umfassen bzw. bestehen aus beispielsweise Kupfer.
Die Innenkontur 8 kann elektrisch leitfähige Mittel, wie Zähne, Noppen oder Schneiden, aufweisen, die sich bei der Pressung der Endhülse 4 von außen durch die elektrische Isolierung der Einzelleiter hindurch bewegen und die Seitenflächen der Einzelleiter im Bereich der Außenkontur des Bündelleiters 2 mit der Endhülse 4 elektrisch kontaktieren. Vorteilhaft muss hierbei die Isolierung 20 nicht entfernt werden. Durch die Entfernung im Bereich der Außenkontur entsteht weniger Wärme bei einem Abschleifprozess, da nicht der gesamte Einzelleiter abgeschliffen werden muss.Electrical insulation in the area of an end 6 of the bundle conductor 2 is, as in Figure 3 shown, at least partially removed. The end 6 becomes one Inner contour 8 of the end sleeve 4 introduced. The bundle conductor 2 is pressure-contacted to make an electrical connection between each of the individual conductors and the end sleeve 4 substantially orthogonally to the side faces of the individual conductors. An inner layer 18 is also referred to as a sword, consists of paper and serves in the area of the transformer winding so that the individual conductors 10 do not damage their insulation by rubbing against one another. The individual conductors of the bundle conductor 2 and the end sleeve 4 are electrically conductive and comprise or consist of, for example, copper.
The inner contour 8 can have electrically conductive means, such as teeth, knobs or cutting, which move from outside through the electrical insulation of the individual conductors when the end sleeve 4 is pressed, and the side faces of the individual conductors in the region of the outer contour of the bundle conductor 2 with the end sleeve 4 electrical contact. The insulation 20 advantageously does not have to be removed here. Due to the removal in the area of the outer contour, less heat is generated during a grinding process, since the entire individual conductor does not have to be ground down.

Figur 2 zeigt den ersten Querschnitt A-A aus Figur 1. Der Bündelleiter 2 weist eine Anzahl von im Querschnitt im Wesentlichen rechteckförmigen, gegeneinander elektrisch isolierten Einzelleitern 10 auf. Eine erste Seitenflächen 12 ist in z-Richtung orientiert. Eine zweite Seitenfläche 13 ist in y-Richtung orientiert. Eine dritte Seitenfläche 14 ist entgegen der z-Richtung orientiert. Eine vierte Seitenfläche 15 ist entgegen der y-Richtung orientiert. Alle Seitenflächen 12, 13, 14 und 15 sind von einer elektrischen Isolierung 20 umhüllt, die beispielsweise als isolierender Lack ausgebildet ist. Figure 2 shows the first cross section AA Figure 1 , The bundle conductor 2 has a number of individual conductors 10 which are essentially rectangular in cross section and are electrically insulated from one another. A first side surface 12 is oriented in the z direction. A second side surface 13 is oriented in the y direction. A third side surface 14 is oriented counter to the z direction. A fourth side surface 15 is oriented against the y direction. All side surfaces 12, 13, 14 and 15 are encased by electrical insulation 20, which is designed, for example, as an insulating lacquer.

Die Einzelleiter 10 verlaufen zumindest abschnittsweise entlang des Bündelleiters 2, also in x-Richtung im Wesentlichen parallel zueinander. Die yz-Positionen der Einzelleiter 10 werden im Verlauf des Bündelleiters 2 vertauscht, um beispielsweise bei der Verwendung eines Drillleiters als Teil einer Transformatorwicklung eines Leistungstransformators Verluste zu vermeiden. Selbstverständlich lässt sich die vorliegende Beschreibung nicht nur auf Drillleiter sondern auch auf andere Bündelleiter 2 wie beispielsweise Zwillingsleiter, Drillingsleiter, Doppelkabel oder sonstige Bündelleiter anwenden.
Figur 3 zeigt in schematischer Form den Bündelleiter 2 aus Figur 2, wobei entlang einer Außenkontur des Bündelleiters 2 die Isolierung 20 entfernt wurde. Mithin liegen die Seitenflächen 12a, 13b bis 13i, 14i und 14j sowie 15j bis 15 s der jeweiligen Einzelleiter 10 frei. Die elektrische Isolierung 20 im Bereich des Endes 6 des Bündelleiters 2 wurde somit zumindest abschnittsweise entfernt. Das Ende 6 kann derart abisoliert in die Endhülse 4 eingeführt werden. Das Ende 6 des Bündelleiters 2 wird zur Herstellung einer elektrischen Verbindung zwischen jedem der Einzelleiter 10 über die freiliegenden und abisolierten Seitenflächen und der Endhülse 4 im Wesentlichen orthogonal zu den freiliegenden und gegenüberliegenden Seitenflächen 12 und 14 und/oder den freiliegenden und gegenüberliegenden Seitenflächen 13 und 15 der jeweiligen Einzelleiter 10 druckkontaktiert. Mithin findet eine Druckkontaktierung in z-Richtung und/oder in y-Richtung statt.The individual conductors 10 run at least in sections along the bundle conductor 2, that is to say essentially parallel to one another in the x direction. The yz positions of the individual conductors 10 are interchanged in the course of the bundle conductor 2 in order, for example, to avoid losses when using a stranded conductor as part of a transformer winding of a power transformer. Of course, the present description can be applied not only to triple conductors but also to other bundle conductors 2 such as, for example, twin conductors, triple conductors, double cables or other bundle conductors.
Figure 3 shows the bundle conductor 2 in a schematic form Figure 2 , the insulation 20 having been removed along an outer contour of the bundle conductor 2. The side surfaces 12a, 13b to 13i, 14i and 14j and 15j to 15 s of the respective individual conductors 10 are therefore exposed. The electrical insulation 20 in the region of the end 6 of the bundle conductor 2 has thus been removed at least in sections. The end 6 can be inserted stripped into the end sleeve 4. The end 6 of the bundle conductor 2 is used to establish an electrical connection between each of the individual conductors 10 via the exposed and stripped side faces and the end sleeve 4 substantially orthogonal to the exposed and opposite side faces 12 and 14 and / or the exposed and opposite side faces 13 and 15 the respective individual conductor 10 pressure-contacted. There is therefore pressure contact in the z direction and / or in the y direction.

Bei der Entfernung der Isolierung 20 im Bereich der Außenkontur des Bündelleiters 2 bleibt die elektrische Isolierung innerhalb des Bündelleiters 2 erhalten. Damit wird die mechanische Struktur des Bündelleiters 2 erhalten.When the insulation 20 is removed in the area of the outer contour of the bundle conductor 2, the electrical insulation within the bundle conductor 2 is retained. The mechanical structure of the bundle conductor 2 is thus obtained.

Vorteilhaft kann so eine schnelle und sichere elektrische Kontaktierung aller Einzelleiter 10 mit der Endhülse 4 durchgeführt werden. Die Entfernung der Isolierung im Bereich der Außenkontur der Bündelleiters 2 kann beispielsweise durch ein Abschleifen, Abbrennen oder aber Sandstrahlen geschehen. Durch die Entfernung lediglich eines Teils der Isolierung 20 bezüglich eines einzelnen Einzelleiters 10 wird vorteilhaft erreicht, dass eine saubere und sichere Kontaktierung stattfindet.A rapid and reliable electrical contacting of all individual conductors 10 with the end sleeve 4 can advantageously be carried out in this way. The insulation in the area of the outer contour of the bundle conductor 2 can be removed, for example, by grinding, burning or sandblasting. By removing only a part of the insulation 20 with respect to a single individual conductor 10, it is advantageously achieved that clean and safe contacting takes place.

Selbstverständlich kann jeder der Einzelleiter 10 auch komplett von der Isolierung 20 befreit werden. Jedoch kann auch hier die rechteckförmige Struktur der Einzelleiter 10 dazu genutzt werden, um vorteilhaft eine Pressung und flächige Druckkontaktierung mit den nach außen gewandten Seitenflächen der Einzelleiter 10 zu erreichen.Of course, each of the individual conductors 10 can also be completely freed from the insulation 20. However, the rectangular structure of the individual conductors 10 can also be used here in order to advantageously achieve a pressure and flat pressure contact with the outwardly facing side surfaces of the individual conductors 10.

Bei der Abtragung der elektrischen Isolierung 20 im Bereich der Außenkontur des Bündelleiters 2 durch ein Strahlen mittels eines Strahlguts kann vorteilhaft eine nicht gezeigte Strahlvorrichtung verwendet werden, in die das Ende 6 vor der Montage mit der Endhülse 4 zur äußerlichen Entfernung der Isolierung 20 hineingehalten wird.When removing the electrical insulation 20 in the area of the outer contour of the bundle conductor 2 by blasting by means of a blasting material, a blasting device (not shown) can advantageously be used, into which the end 6 is held before the assembly with the end sleeve 4 for the external removal of the insulation 20.

Nach dem Entfernen der Isolierung 20 im Bereich der Außenkontur wird mittels einer Außenpressung der Endhülse 4 eine Quetschverbindung hergestellt wird. Selbstverständlich kann das Ende 6 auch durch eine anders ausgestaltete Klemmverbindung in y-Richtung und/oder in z-Richtung mit Druck beaufschlagt werden, um sowohl eine mechanische als auch eine elektrische Verbindung der Einzelleiter 10 mit der Endhülse 4 zu realisieren. So kann beispielsweise eine Klemmung nach der Art einer Fahrstuhlklemme erfolgen.After the insulation 20 has been removed in the region of the outer contour, a crimp connection is produced by means of an external pressure on the end sleeve 4. Of course, the end 6 can also be pressurized by a differently designed clamping connection in the y direction and / or in the z direction in order to realize both a mechanical and an electrical connection of the individual conductors 10 to the end sleeve 4. For example, it can be clamped like an elevator clamp.

Figur 4 zeigt das Ende 6 aus Figur 3, wie es in der im Wesentlichen rechteckigen Innenkontur 8 der Endhülse 4 aufgenommen ist, und wobei eine flächige Pressung in z-Richtung und y-Richtung eine Quetschverbindung verwirklicht. Des Weiteren ist eine elektrisch leitfähige Beilage 24 zwischen der Innenkontur 8 der Endhülse 4 und dem abisolierten Bündelleiter 2 eingebracht. Die Beilage 24 ermöglicht vorteilhaft eine Erhöhung des Füllungsgrades zur Verbesserung der Presswirkung und damit der Kontaktierung. Darüber hinaus garantiert die Beilage 24 die elektrische Kontaktierung. Vorteilhaft kann durch unterschiedliche Größen der Beilage 24 die Variantenvielfalt der Bündelleiter 2 und der Endhülsen 4 durch eine entsprechende Größenanpassung mittels der Beilage 24 reduziert werden. Figure 4 shows the end 6 Figure 3 , as it is received in the substantially rectangular inner contour 8 of the end sleeve 4, and wherein a flat pressure in the z-direction and y-direction realizes a crimp connection. Furthermore, an electrically conductive insert 24 is inserted between the inner contour 8 of the end sleeve 4 and the stripped bundle conductor 2. The insert 24 advantageously enables an increase in the degree of filling to improve the pressing effect and thus the contact. In addition, the insert 24 guarantees the electrical contact. The variety of variants of the bundle conductor 2 and the end sleeves 4 can advantageously be reduced by different sizes of the insert 24 by a corresponding size adjustment by means of the insert 24.

Figur 5 zeigt das Ende 6 aus Figur 3, wie es in der im Wesentlichen rechteckigen Innenkontur 8 der Endhülse 4 aufgenommen ist, wobei eine Beilage 26 zwischen der Innenkontur 8 und dem Ende 6 entgegen der z-Richtung angeordnet ist. Die Beilage 26 kann auch aus einem nicht leitenden Material gefertigt sein, da die Einzelleiter 10i und 10j bereits entgegen und in der y-Richtung mit der Innenkontur 8 elektrisch kontaktiert werden können. Figure 5 shows the end 6 Figure 3 , as it is accommodated in the substantially rectangular inner contour 8 of the end sleeve 4, an insert 26 being arranged between the inner contour 8 and the end 6 against the z direction. The insert 26 can also be made of a non-conductive material, since the individual conductors 10i and 10j can already be contacted electrically in the opposite direction and in the y direction with the inner contour 8.

Die Beilagen 24 und/oder 26 können selbstverständlich auch an einer anderen Position wie in den Figuren 4 und 5 gezeigt angeordnet sein. Selbstverständlich können auch mehrere Beilagen 24 und/oder 26 vorgesehen werden.The supplements 24 and / or 26 can of course also in a different position than in the Figures 4 and 5 shown to be arranged. Of course, several supplements 24 and / or 26 can also be provided.

Figur 6 zeigt eine Ausführungsform nach Figur 4. Die Außenpressung der Endhülse 4 wurde mittels eines Presswerkzeugs ausgeführt, das eine konvexe Presskontur aufweist. Mithin hat die Endhülse 4 im Querschnitt nach Figur 6 nach der Pressung konkave Seitenkonturen 28, wodurch die Innenkontur 8 sich entsprechend ausbildet und eine Kontaktierung aller Einzelleiter 10 mit der Innenkontur 8 der Endhülse 4 verbessert wird. Figure 6 shows an embodiment Figure 4 , The outer pressure of the end sleeve 4 was carried out by means of a pressing tool which has a convex pressing contour. Thus, the end sleeve 4 has a cross section Figure 6 after pressing concave side contours 28, whereby the inner contour 8 is formed accordingly and contacting of all individual conductors 10 with the inner contour 8 of the end sleeve 4 is improved.

Figur 7 zeigt ein erstes schematisches Ablaufdiagramm. In einem ersten Schritt 30 wird die elektrische Isolierung 20 im Bereich des Endes 6 des Bündelleiters 2 zumindest abschnittsweise entfernt. In einem zweiten Schritt 32 wird das Ende 6 in die Endhülse 4 eingeführt. In einem dritten Schritt 34 wird der Bündelleiter 2 im Wesentlichen orthogonal zu den Seitenflächen 12, 14 und/oder 13, 15 der Einzelleiter 10 druckkontaktiert, um eine Quetschverbindung herzustellen. Figure 7 shows a first schematic flow chart. In a first step 30, the electrical insulation 20 in the region of the end 6 of the bundle conductor 2 is removed at least in sections. In a second step 32, the end 6 is inserted into the end sleeve 4. In a third step 34, the bundle conductor 2 is pressure-contacted substantially orthogonally to the side surfaces 12, 14 and / or 13, 15 of the individual conductors 10 in order to produce a crimp connection.

Figur 8 zeigt ein zweites schematisches Ablaufdiagramm. In einem ersten Schritt 40 wird das Ende 6 in die Innenkontur 8, die elektrisch leitfähige Mittel, wie Zähne, Noppen oder Schneiden, aufweist, die sich bei der Pressung der Endhülse 4 von außen durch die elektrische Isolierung der Einzelleiter hindurch bewegen, eingebracht. In einem zweiten Schritt 42 wird die elektrische Isolierung 20 im Bereich des Endes 6 des Bündelleiters 2 zumindest abschnittsweise durch die vorgenannten Mittel und durch eine Druckbeaufschlagung im Wesentlichen orthogonal zu den Seitenflächen 12, 14 und/oder 13, 15 entfernt. Figure 8 shows a second schematic flow chart. In a first step 40, the end 6 is introduced into the inner contour 8, which has electrically conductive means, such as teeth, knobs or cutters, which move through the electrical insulation of the individual conductors from the outside when the end sleeve 4 is pressed. In a second step 42, the electrical insulation 20 in the region of the end 6 of the bundle conductor 2 is removed at least in sections by the aforementioned means and by applying pressure essentially orthogonally to the side surfaces 12, 14 and / or 13, 15.

Claims (13)

  1. Method making an electrical connection of a ferrule (4) with a transposed conductor, which has a number of individual conductors (10), which are substantially rectangular in cross section and electrically insulated from one another, wherein side surfaces (12, 14; 13, 15) of the individual conductors (10) at least in sections extend along the transposed conductor substantially parallel to one another, wherein the electrical insulation (20) is removed at least in the region of an outer contour of an end (6) of the transposed conductor, wherein the end (6) is inserted into a ferrule (4), and wherein the transposed conductor is pressure-contacted substantially orthogonally to the side surfaces (12, 14; 13, 15) of the individual conductors (10), wherein the end (6) is subjected to pressure by means of a clamping connection at right angles to the direction of extension of the end (6) of the transposed conductor, in order to realise both a mechanical as well as an electrical connection of the individual conductors (10) to the ferrule (4).
  2. Method according to claim 1, wherein the electrical insulation (20) is substantially maintained within the transposed conductor in the region of the end (6).
  3. Method according to claim 2, wherein the electrical insulation (20) is removed in the region of the outer contour of the transposed conductor by an abrasive blasting by means of a blasting material.
  4. Method according to any one of the preceding claims, wherein by means of an external pressing of the ferrule (4) a crimp connection is made.
  5. Method according to any one of the preceding claims, wherein the external pressing of the ferrule (4) is carried out by means of a pressing tool, which has a convex pressing contour, and wherein the ferrule (4) has a concave side contour (28) after the pressing.
  6. Method according to any one of the preceding claims, wherein the ferrule (4) has a substantially rectangular inner contour (8) for receiving the end (6) of the transposed conductor.
  7. Method according to any one of the preceding claims, wherein before the pressing an electrically conductive shim (24) is inserted between the inner contour (8) of the ferrule (4) and the end (6) of the transposed conductor.
  8. Method according to any one of the preceding claims, wherein before the pressing an electrically insulating shim (26) is inserted between the inner contour (8) of the ferrule (4) and the end (6) of the transposed conductor.
  9. Method according to claim 7 or 8, wherein the shim (24; 26) has electrically conductive means, which move through the electrical insulation (20) during the pressing and electrically contact the side surfaces (12, 14; 13,15) of the individual conductors (10) in the region of the outer contour of the transposed conductor with the ferrule (4).
  10. Method according to any one of the preceding claims, wherein the inner contour (8) of the ferrule (4) has electrically conductive means, which move through the electrical insulation (20) during the pressing and electrically contact the side surfaces (12, 14; 13, 15) of the individual conductors (10) in the region of the outer contour of the transposed conductor with the ferrule (4).
  11. Arrangement having a ferrule (4) and a transposed conductor, wherein the ferrule (4) is electrically connected to the transposed conductor, wherein the transposed conductor has a number of individual conductors (10), which are substantially rectangular in cross section and electrically insulated from one another, wherein side surfaces (12, 14; 13, 15) of the individual conductors (10) at least in sections extend along the transposed conductor substantially parallel to one another, wherein the transposed conductor has no electrical insulation (20) at least in the region of an outer contour of an end (6), wherein the end (6) is arranged in the ferrule (4), and wherein the transposed conductor is pressure-contacted substantially orthogonally to the side surfaces (12, 14; 13, 15) of the individual conductors (10), wherein both a mechanical as well as an electrical connection of the individual conductors (10) to the ferrule (4) is formed in that the end (6) is subjected to pressure by means of a clamping connection at right angles to the direction of extension of the end (6) of the transposed conductor.
  12. Power transformer comprising the arrangement according to claim 11.
  13. Power transformer according to claim 12, wherein a transformer winding comprises the transposed conductor.
EP15185709.1A 2014-09-30 2015-09-17 Method for making an electrical connection of a ferrule with a transposed conductor Active EP3002827B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014219809.7A DE102014219809A1 (en) 2014-09-30 2014-09-30 Method for producing an electrical connection with a bundle conductor and end sleeve

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EP3002827A1 EP3002827A1 (en) 2016-04-06
EP3002827B1 true EP3002827B1 (en) 2020-02-19

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EP15185709.1A Active EP3002827B1 (en) 2014-09-30 2015-09-17 Method for making an electrical connection of a ferrule with a transposed conductor

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EP (1) EP3002827B1 (en)
DE (1) DE102014219809A1 (en)
ES (1) ES2776206T3 (en)

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Publication number Priority date Publication date Assignee Title
DE2723029C2 (en) * 1977-05-21 1985-06-27 Robert Bosch Gmbh, 7000 Stuttgart Electrical connection of at least partially coated wires
FR2662864B1 (en) * 1990-06-05 1992-09-04 Aerospatiale METHOD FOR CONNECTING AN ELECTRICAL CONDUCTOR TO A PIN OF A CONNECTOR, AND ELECTRICAL CONNECTION OBTAINED BY IMPLEMENTING THIS METHOD.
DE102004054527B4 (en) 2004-11-05 2006-10-12 Siemens Ag Process for the preparation of an isolated conductor of an insulated conductor and release agent
JP5235369B2 (en) * 2007-09-18 2013-07-10 株式会社オートネットワーク技術研究所 Wire harness, method for manufacturing the same, and method for connecting insulated wires
JP4631951B2 (en) * 2008-09-19 2011-02-16 パナソニック株式会社 Electrical connection means for washing machine between wound coil and copper wire
CN101604572A (en) * 2009-04-14 2009-12-16 焦海波 The winding conducting wire of dry-type transformer or reactor and the method for attachment of leader cable
DE102009053940A1 (en) 2009-11-19 2011-05-26 Hager Electro Gmbh & Co. Kg Connecting device for an electronic electricity meter
JP5666247B2 (en) * 2010-11-01 2015-02-12 矢崎総業株式会社 Electric wire holding structure and electric wire holding method

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ES2776206T3 (en) 2020-07-29
EP3002827A1 (en) 2016-04-06
DE102014219809A1 (en) 2016-03-31

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