EP2063491B1 - Connecting terminal for a transformer - Google Patents

Connecting terminal for a transformer Download PDF

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Publication number
EP2063491B1
EP2063491B1 EP07022756A EP07022756A EP2063491B1 EP 2063491 B1 EP2063491 B1 EP 2063491B1 EP 07022756 A EP07022756 A EP 07022756A EP 07022756 A EP07022756 A EP 07022756A EP 2063491 B1 EP2063491 B1 EP 2063491B1
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EP
European Patent Office
Prior art keywords
clamping body
clamping
terminal
terminal according
connecting terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07022756A
Other languages
German (de)
French (fr)
Other versions
EP2063491A1 (en
Inventor
Harald Bleuel
Thomas Sobotta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jean Mueller Elektrotechnische Fabrik GmbH
Original Assignee
Jean Mueller Elektrotechnische Fabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jean Mueller Elektrotechnische Fabrik GmbH filed Critical Jean Mueller Elektrotechnische Fabrik GmbH
Priority to EP07022756A priority Critical patent/EP2063491B1/en
Priority to AT07022756T priority patent/ATE541338T1/en
Publication of EP2063491A1 publication Critical patent/EP2063491A1/en
Application granted granted Critical
Publication of EP2063491B1 publication Critical patent/EP2063491B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H01R4/643—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for rigid cylindrical bodies
    • 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
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member
    • H01R4/366—Conductive members located under tip of screw with intermediate part between tip and conductive member intermediate part attached to the tip of the screw

Definitions

  • the invention relates to a terminal for a transformer, in particular for a transformer for transforming a voltage to low voltage, with a clamping body having a threaded bore for screwing the clamping body on a connecting bolt of the transformer, wherein the clamping body is slotted in the threaded bore and means for Delivering the located in the region of the slot clamping body areas for the purpose of clamping the clamping body and connecting bolt, as well as with at least one device for clamping at least one connecting line.
  • low voltage is meant a voltage of less than 1 kV.
  • connection terminal for a transformer which also corresponds to the preamble of claim 1 is known from EP 1 378 671 A1 known.
  • the connection terminal is used to connect to the connection pin of the transformer and to connect the connecting cables.
  • the known terminal has a plurality of threaded holes.
  • a threaded hole is used to screw the clamp body onto the connecting bolt of the transformer.
  • the means for advancing located in the region of the slot of the clamp body clamping body areas allow a slight reduction in the pitch of the thread of the threaded hole, so that in this way a clamping between the clamping body and terminal bolt of the transformer is achieved. As a result, these parts are securely connected.
  • Other threaded holes of the clamp body serve to receive a clamping screw. By free threaded holes of the clamp body, the connection lines are inserted into the clamp body and are clamped by means of the clamping screws.
  • a terminal is described at a low voltage terminal of a power supply unit, wherein the terminal is fixable in any rotational and height position.
  • the terminal on its mounting side on a through hole whose diameter is larger than a connecting bolt of the power supply unit.
  • the terminal can be arranged by both sides of this arranged and screwed onto the connecting bolt nuts in be fixed at any rotational position and independent of the rotational position arbitrary height position on the connecting bolt.
  • a terminal for a transformer known.
  • This has a clamping body, which has two mutually articulated clamping body halves, which are provided with threaded portions. By advancing the sprag halves they can be brought into engagement with a threaded connection pin of the transformer. With a sprag half a connection is connected, which serves to accommodate various connecting cables, which can be clamped by means of screws.
  • a terminal for a transformer is further from the US-A-5,931,708 known.
  • the terminal has a receptacle for a threaded terminal bolt of the transformer, wherein in the receiving area of the terminal teeth cooperate with the terminal bolt and this is clamped by means mounted in the terminal screws with respect to the terminal.
  • the terminal further comprises sections with a plurality of receptacles for connection lines, which can be clamped by means of screws.
  • Object of the present invention is to provide a terminal that allows to increase the safety of personnel who performs installation or maintenance on an electrical system in the transformer installation area, the terminal is structurally very simple and Easy to connect, with the possibility to connect several leads to the terminal.
  • the object is achieved with a terminal of the type mentioned in that with the terminal a grounding bolt is connected, and the at least one means for clamping the at least one connecting line has a connection plate having at least two projections, wherein the respective projection the attachment of a Conductor terminal is used and the connection plate is connected to the clamp body.
  • grounding bolt can be permanently connected to the terminal, thus even if the transformer is not de-energized, since for the staff working on the electrical system, is primarily important that the grounding cable is connected to the grounding bolt.
  • an additional threaded bore is provided in the clamping body, in which the grounding bolt is screwed.
  • the grounding bolt for example, in the region of its thread on a lock nut.
  • the end of the grounding bolt facing away from the clamping body is preferably designed as a ball.
  • different sets of terminals are provided, wherein the respective clamping body has a threaded bore with a bore diameter corresponding to the diameter of the respective connecting bolt of the transformer.
  • clamping bodies with threads of M12 to M48 are provided.
  • the slot plane of the slot of the clamping body is, in relation to the threaded bore for screwing on the clamping body, in particular arranged radially or perpendicular to the threaded bore axis.
  • the radial arrangement of the slot is provided with smaller thread diameters of the slotted threaded bore.
  • the clamping of the clamping body and connecting bolt is done in this case by reducing the diameter of the threaded hole. For larger diameters, it is expedient to provide the slot perpendicular to the threaded hole axis.
  • the clamping of the clamping body and connecting bolt is done in this case by reducing the pitch of the thread of the threaded hole.
  • the means for advancing the sprag areas is advantageously designed as a screw, wherein the screw passes through a hole in one of the sprag areas of the sprag and is screwed into a threaded hole in the other sprag area of the sprag.
  • the terminal is constructed and can also be structurally particularly easy to manufacture, in particular by means of simple Processing method, if the at least one device for clamping the connecting line has at least one connection plate and at least one conductor terminal, wherein the connection plate is connected to the clamping body, in particular by means of screws.
  • the stop plate thus presents itself as a simple, possibly bent and profiled sheet metal part, while the clamping body is a machined solid material, which is provided with the bores or threaded holes and the slot.
  • connection plate which has at least two projections, in particular two projections, the respective projection serving to attach a conductor clamp known from the prior art.
  • the respective conductor terminal can be used to clamp one or two connection lines.
  • the terminal plate has two projections, only one conductor terminal can be fitted onto one of the projections. As a result, the terminal basically serves to connect one to four connecting cables.
  • the projections are arranged in the plane to the stop plate or perpendicular to the plane of the stop plate.
  • the respective projection is used to attach one of the conductor terminals, wherein a connecting line is clamped between a deliverable clamping piece of the conductor clamp and this projection, wherein the conductor clamp engages behind the projection.
  • the connecting terminal 1 is essentially formed by the parallelepipedal clamping body 2, the grounding bolt 3 screwed into the latter, the connecting plate 4 screwed to the clamping body 2 and made of sheet metal, which has two projections 5, and two conductor terminals 6 and 5 mounted on the projections 5 7 formed.
  • the clamp body 2 made of electrically conductive solid material is provided with a threaded bore 8, which passes through the clamp body 2 and perpendicular to the upper large surface 9 of the clamp body 2 extends.
  • the clamping body 2 is further provided in the region of one end face 10 with a central threaded bore 11.
  • the grounding bolt 3 is screwed with its threaded extension 12.
  • a nut 13 is further screwed, which has the function of a lock nut and is clamped when screwed into the clamping body 2 grounding bolt 3 against the clamping body 2 in the region of the end face 10.
  • a cylindrical projection 14 is provided in the region of its end facing away from the threaded neck 12 of the grounding bolt 3 with a ball 15, to which a grounding cable is attached.
  • Parallel to the plane formed by the end face 10 of the clamping body 2 is provided with a slot 16 which extends not only from the one longitudinal side 17 to the threaded bore 8, but also in the region of the clamping body 2 in which extends between the threaded bore 8 and the other longitudinal side 18 is located.
  • Parallel to the longitudinal axis of the central threaded bore 11 of the clamping body 2 is provided in the region between the end face 10 and the slot 16, adjacent the longitudinal side 17 with a bore 19 extending in the region of the clamping body 2, between the slot 16 and the other end face 25 of the clamping body 2 is arranged, continues as a threaded hole.
  • a screw 20 is inserted and screwed into the threaded portion of the bore, so that, due to concerns of the head 21 of the screw 20 to a lug 22, the two clamping body regions 23 and 24 formed due to the slot 16 can be, thus in Let sense a reduction in the gap strength to one another, with the result of a reduction in the diameter of the threaded bore.
  • the other end face 25 of the clamping body 2 is provided with two threaded holes. Accordingly, a flat plate portion 26 of the connection plate 4 is provided with two through-holes 27. The fastening of the plate section 26 on the clamping body 2 by means of two screws 28 with washers 29th
  • connection plate 4 is formed by the flat plate portion 26 and the two, at right angles to this in the direction of the threaded bore 8 angled projections 5. Seen in the longitudinal direction, these projections have an angled cross-section, with slightly upwardly directed ends, wherein the upper portion of the respective projection 5 is provided with a corrugation 30.
  • the respective conductor terminal 6 and 7, which cooperates with the associated projection 5, has a U-shaped base part 31 which engages under projection 5 in the longitudinal direction of the projection 5 on this plugged state. Above the projection 5 is a clamping part 32 of the conductor terminal 6 and 7, which is guided in the parallel legs of the base member 31, respectively. It serves to clamp a connecting line 33 between the clamping part 32 and the projection 5, as shown in the illustration of FIGS.
  • the reference numeral 34 an insulating jacket of the connecting line 33 is designated. While the conductor terminal 6 only serves to clamp a connecting line 33 and consequently the clamping part 32 is delivered directly by means of a set screw 35, the other conductor terminal 7 serves to clamp two connecting lines 33, whereby the clamping part 32 additionally has an upper receptacle for the second connecting line 33 and on top of this connecting line, a further clamping part 36 acts, which is undeliverable by means of the adjusting screw 35.
  • the respective adjusting screw 35 is held in a receptacle 37 which is positively connected to the legs of the base part 31 in the region of its upper end.
  • FIG. 4 illustrates the departure of the transformer, specifically its transformer core 38, the terminal bolt 40 is provided with an external thread 39, the thread diameter of which corresponds to the threaded bore 8 at not mutually braced sprag areas 23 and 24.
  • the transformer is used in particular for transforming a voltage to low voltage, in particular a low voltage of less than 1 kV.
  • the clamping body 2 On the connecting bolt 40, the clamping body 2 is screwed and then clamped the two clamping body portions 23 and 24 by tightening the screw 20 against each other. As a result, the clamping body 2 is rotatably connected to the transformer core 38. In the area of the connection plate 4, the three connection lines 33 are clamped to the connection terminal 1 by means of the two conductor terminals 6 and 7. During installation and maintenance of the grounding pin 3 is connected to the terminal body 2 and there caused by applying a grounding line, the grounding of the transformer.
  • the embodiment according to the FIGS. 6 to 8 is different from the one after the FIGS. 1 to 5 only in that the connecting plate 4 is formed substantially flat overall, thus the two projections 5 are not arranged at right angles to the flat plate portion 26, but are positioned in the extension of the flat plate portion 26. Further, the terminal plate 4 is mounted so that the corrugation 30 of the projections 5 faces the grounding stud 3. The connected conductor terminals 6 and 7 are thus located above the terminal body. 2
  • the embodiment according to the FIGS. 9 to 11 is different from the one after the FIGS. 1 to 5 in that the threaded bore 8 has a substantially larger diameter, in particular a thread M42 or M48 is used, and consequently this connection terminal 1 serves to connect to a connecting bolt 40 with a larger thread diameter.
  • the clamping body 2 is not slotted parallel to the end face 10, but it runs the slot 16 parallel and adjacent to the upper Surface 9 of the clamping body 2. Instead of the bore 19, which in the embodiment of the FIGS.
  • the arrangement of the terminal plate 4 on the terminal body 2 and the connection of the conductor terminals 6 and 7 corresponds in the embodiment of the FIGS. 9 to 11 the embodiment of the FIGS. 1 to 5 ,
  • the embodiment according to the FIGS. 12 to 14 is different from the one after the FIGS. 9 to 11 only in that the connection as in the embodiment of the FIGS. 6 to 8 he follows.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

The terminal (1) has a terminal body (2), which has a tapped hole for screwing the terminal body on a connection pin (40) of a transformer. The terminal body is slotted in the area of the tapped hole. The terminal body has a screw (20) for blocking terminal body areas (23, 24) found in an area of a slot (16), where the terminal body area is provided for clamping the terminal body and the connection pin. A connecting plate (4) and wire terminals (6, 7) are provided for clamping a connecting wire (33). A grounding pin (3) is connectable with the connecting terminal.

Description

Die Erfindung betrifft eine Anschlussklemme für einen Transformator, insbesondere für einen Transformator zum Transformieren einer Spannung auf Niederspannung, mit einem Klemmkörper, der eine Gewindebohrung zum Aufschrauben des Klemmkörpers auf einen Anschlussbolzen des Transformators aufweist, wobei der Klemmkörper im Bereich der Gewindebohrung geschlitzt ist und Mittel zum Zustellen der im Bereich des Schlitzes befindlichen Klemmkörperbereiche zwecks Klemmen von Klemmkörper und Anschlussbolzen aufweist, sowie mit mindestens einer Einrichtung zum Klemmen mindestens einer Anschlussleitung.The invention relates to a terminal for a transformer, in particular for a transformer for transforming a voltage to low voltage, with a clamping body having a threaded bore for screwing the clamping body on a connecting bolt of the transformer, wherein the clamping body is slotted in the threaded bore and means for Delivering the located in the region of the slot clamping body areas for the purpose of clamping the clamping body and connecting bolt, as well as with at least one device for clamping at least one connecting line.

Der Klemmkörper einer solchen Anschlussklemme wird auf den Anschlussbolzen des Transformators auf dessen Niederspannungsseite aufgeschraubt. Unter Niederspannung wird hierbei eine Spannung kleiner 1 kV verstanden.The clamping body of such a terminal is screwed onto the connection pin of the transformer on the low-voltage side. By low voltage is meant a voltage of less than 1 kV.

Eine derartige Anschlussklemme für einen Transformator die auch der Präambel des Anspruchs 1 entspricht, ist aus der EP 1 378 671 A1 bekannt. Die Anschlussklemme dient dem Anschließen an den Anschlussbolzen des Transformators und dem Anschließen der Anschlussleitungen.Such a terminal for a transformer which also corresponds to the preamble of claim 1 is known from EP 1 378 671 A1 known. The connection terminal is used to connect to the connection pin of the transformer and to connect the connecting cables.

Die bekannte Anschlussklemme weist eine Vielzahl von Gewindebohrungen auf. Eine Gewindebohrung dient dem Aufschrauben des Klemmkörpers auf den Anschlussbolzen des Transformators. Die Mittel zum Zustellen der im Bereich des Schlitzes des Klemmkörpers befindlichen Klemmkörperbereiche ermöglichen eine geringfügige Reduzierung der Steigung des Gewindes der Gewindebohrung, so dass hierdurch eine Klemmung zwischen Klemmkörper und Anschlussbolzen des Transformators erreicht wird. Hierdurch sind diese Teile sicher miteinander verbunden. Andere Gewindebohrungen des Klemmkörpers dienen jeweils der Aufnahme einer Klemmschraube. Durch freie Gewindebohrungen des Klemmkörpers sind die Anschlussteitungen in den Klemmkörper eingesteckt und werden mittels der Klemmschrauben geklemmt.The known terminal has a plurality of threaded holes. A threaded hole is used to screw the clamp body onto the connecting bolt of the transformer. The means for advancing located in the region of the slot of the clamp body clamping body areas allow a slight reduction in the pitch of the thread of the threaded hole, so that in this way a clamping between the clamping body and terminal bolt of the transformer is achieved. As a result, these parts are securely connected. Other threaded holes of the clamp body serve to receive a clamping screw. By free threaded holes of the clamp body, the connection lines are inserted into the clamp body and are clamped by means of the clamping screws.

In der DE 10 2004 045 609 A1 ist eine Anschlussklemme an einem Niederspannungsanschluss einer Stromversorgungseinheit beschrieben, wobei die Anschlussklemme in jeder beliebigen Dreh- und Höhenposition fixierbar ist. Hierzu weist die Anschlussklemme auf ihrer Befestigungsseite eine Durchgangsbohrung auf, deren Durchmesser größer ist als ein Anschlussbolzen der Stromversorgungseinheit. Hierdurch kann die Anschlussklemme durch beidseitig dieser angeordnete und auf den Anschlussbolzen aufgeschraubte Muttern in jeder beliebigen Drehstellung und von der Drehstellung unabhängigen beliebigen Höhenposition auf dem Anschlussbolzen fixiert werden.In the DE 10 2004 045 609 A1 a terminal is described at a low voltage terminal of a power supply unit, wherein the terminal is fixable in any rotational and height position. For this purpose, the terminal on its mounting side on a through hole whose diameter is larger than a connecting bolt of the power supply unit. As a result, the terminal can be arranged by both sides of this arranged and screwed onto the connecting bolt nuts in be fixed at any rotational position and independent of the rotational position arbitrary height position on the connecting bolt.

Bei Installations- oder Wartungsarbeiten im Bereich des Transformators ist es aus Gründen der Sicherheit des arbeitenden Personals erforderlich, die elektrische Anlage zu erden. Dies geschieht meist im Bereich der Unterverteilung, somit in einem vom Transformator unabhängigen Bereich, der von dem Personal nicht eingesehen werden kann. Dieses ist sich damit nicht im Klaren, ob der Transformator geerdet ist oder nicht.For installation or maintenance work in the area of the transformer, it is necessary to ground the electrical system for safety reasons of the operating personnel. This is usually done in the area of the sub-distribution, thus in an independent area of the transformer, which can not be viewed by the staff. This is not clear whether the transformer is grounded or not.

Aus der US-B1-7 175 484 ist eine Anschlussklemme für einen Transformator bekannt. Dieser weist einen Klemmkörper auf, der zwei gelenkig miteinander verbundene Klemmkörperhälften aufweist, die mit Gewindeabschnitten versehen sind. Durch Zustellen der Klemmkörperhälften können diese in Eingriff mit einem ein Gewinde aufweisenden Anschlussbolzen des Transformators gebracht werden. Mit einer Klemmkörperhälfte ist ein Ansatz verbunden, der der Aufnahme diverser Anschlussleitungen dient, die mittels Schrauben geklemmt werden können.From the US-B1-7 175 484 is a terminal for a transformer known. This has a clamping body, which has two mutually articulated clamping body halves, which are provided with threaded portions. By advancing the sprag halves they can be brought into engagement with a threaded connection pin of the transformer. With a sprag half a connection is connected, which serves to accommodate various connecting cables, which can be clamped by means of screws.

Eine Anschlussklemme für ein Transformator ist ferner aus der US-A-5 931 708 bekannt. Die Anschlussklemme weist eine Aufnahme für einen mit einem Gewinde versehenen Anschlussbolzen des Transformators auf, wobei im Aufnahmebereich der Anschlussklemme Zähne mit dem Anschlussbolzen zusammenwirken und dieser mittels in der Anschlussklemme gelagerter Schrauben bezüglich der Anschlussklemme verspannbar ist. Die Anschlussklemme weist ferner Abschnitte mit einer Vielzahl von Aufnahmen für Anschlussleitungen auf, die mittels Schrauben klemmbar sind.A terminal for a transformer is further from the US-A-5,931,708 known. The terminal has a receptacle for a threaded terminal bolt of the transformer, wherein in the receiving area of the terminal teeth cooperate with the terminal bolt and this is clamped by means mounted in the terminal screws with respect to the terminal. The terminal further comprises sections with a plurality of receptacles for connection lines, which can be clamped by means of screws.

Eine Schnellverbindung bei einem Transformator ist schließlich in der US-B1-6 837 754 beschrieben.A quick connection to a transformer is finally in the US-B1-6 837 754 described.

Aufgabe der vorliegenden Erfindung ist es, eine Anschlussklemme zu schaffen, die es gestattet, die Sicherheit von Personal, das an einer elektrischen Anlage im Bereich des Transformators Installations- oder Wartungsarbeiten durchführt, signifikant zu erhöhen, wobei die Anschlussklemme baulich besonders einfach aufgebaut ist und sich einfach herstellen lässt, mit der Möglichkeit, mehrere Anschlussleitungen an die Klemme anzuschließen.Object of the present invention is to provide a terminal that allows to increase the safety of personnel who performs installation or maintenance on an electrical system in the transformer installation area, the terminal is structurally very simple and Easy to connect, with the possibility to connect several leads to the terminal.

Gelöst wird die Aufgabe bei einer Anschlussklemme der eingangs genannten Art dadurch, dass mit der Anschlussklemme ein Erdungsbolzen verbunden ist, sowie die mindestens eine Einrichtung zum Klemmen der mindestens einen Anschlussleitung eine Anschlussplatte aufweist, die mindestens zwei Vorsprünge aufweist, wobei der jeweilige Vorsprung dem Aufstecken einer Leiterklemme dient und die Anschlussplatte mit dem Klemmkörper verbunden ist.The object is achieved with a terminal of the type mentioned in that with the terminal a grounding bolt is connected, and the at least one means for clamping the at least one connecting line has a connection plate having at least two projections, wherein the respective projection the attachment of a Conductor terminal is used and the connection plate is connected to the clamp body.

Bei Installations- und Wartungsarbeiten kann das Personal den von diesem mitgeführten Erdungsbolzen unmittelbar mit der Anschlussklemme verbinden und ein Erdungskabel am Erdungsbolzen anschließen. Hierdurch kann jeder Dritte, der an der Anlage arbeitet, durch einfachen Blick auf den Transformator erkennen, dass dieser spannungsfrei geschaltet ist und demnach gefahrlos an der elektrischen Anlage gearbeitet werden kann. Grundsätzlich kann der Erdungsbolzen dauerhaft mit der Anschlussklemme verbunden sein, somit auch dann, wenn der Transformator nicht spannungsfrei geschaltet ist, da für das Personal, das an der elektrischen Anlage arbeitet, primär von Bedeutung ist, dass das Erdungskabel mit dem Erdungsbolzen verbunden ist.During installation and maintenance work, personnel can connect the earthing bolt they carry directly to the terminal and connect a ground wire to the earthing pin. As a result, every third person working on the system can see, simply by looking at the transformer, that it is disconnected from the power supply and therefore can safely work on the electrical system. Basically, the grounding bolt can be permanently connected to the terminal, thus even if the transformer is not de-energized, since for the staff working on the electrical system, is primarily important that the grounding cable is connected to the grounding bolt.

Vorzugsweise ist eine zusätzliche Gewindebohrung im Klemmkörper vorgesehen, in den der Erdungsbolzen eingeschraubt ist. Um sicherzustellen, dass der Erdungsbolzen verdrehsicher mit dem Klemmkörper verbunden ist. Hierzu weist der Erdungsbolzen beispielsweise im Bereich seines Gewindes eine Kontermutter auf.Preferably, an additional threaded bore is provided in the clamping body, in which the grounding bolt is screwed. To ensure, that the grounding bolt is connected against rotation with the clamping body. For this purpose, the grounding bolt, for example, in the region of its thread on a lock nut.

Zum Erden des Erdungsbolzens ist das dem Klemmkörper abgewandte Ende des Erdungsbolzens vorzugsweise als Kugel ausgebildet.For grounding of the grounding bolt, the end of the grounding bolt facing away from the clamping body is preferably designed as a ball.

Zweckmäßig sind unterschiedliche Sätze von Anschlussklemmen vorgesehen, wobei der jeweilige Klemmkörper eine Gewindebohrung mit einem Bohrungsdurchmesser aufweist, der dem Durchmesser des jeweiligen Anschlussbolzens des Transformators entspricht. Es sind insbesondere Klemmkörper mit Gewinden von M12 bis M48 vorgesehen.Appropriately, different sets of terminals are provided, wherein the respective clamping body has a threaded bore with a bore diameter corresponding to the diameter of the respective connecting bolt of the transformer. In particular, clamping bodies with threads of M12 to M48 are provided.

Die Schlitzebene des Schlitzes des Klemmkörpers ist, bezogen auf die Gewindebohrung zum Aufschrauben des Klemmkörpers, insbesondere radial oder senkrecht zur Gewindebohrungsachse angeordnet. Um eine sichere Klemmung zwischen Klemmkörper und Anschlussbolzen zu erzielen, ist bei kleineren Gewindedurchmessern der geschlitzten Gewindebohrung die radiale Anordnung des Schlitzes vorzusehen. Das Klemmen von Klemmkörper und Anschlussbolzen geschieht in diesem Fall durch Reduzierung des Durchmessers der Gewindebohrung. Bei größeren Durchmessern ist es zweckmäßig, den Schlitz senkrecht zur Gewindebohrungsachse vorzusehen. Das Klemmen von Klemmkörper und Anschlussbolzen geschieht in diesem Fall durch Reduzierung der Steigung des Gewindes der Gewindebohrung.The slot plane of the slot of the clamping body is, in relation to the threaded bore for screwing on the clamping body, in particular arranged radially or perpendicular to the threaded bore axis. In order to achieve a secure clamping between the clamping body and connecting bolt, the radial arrangement of the slot is provided with smaller thread diameters of the slotted threaded bore. The clamping of the clamping body and connecting bolt is done in this case by reducing the diameter of the threaded hole. For larger diameters, it is expedient to provide the slot perpendicular to the threaded hole axis. The clamping of the clamping body and connecting bolt is done in this case by reducing the pitch of the thread of the threaded hole.

Das Mittel zum Zustellen der Klemmkörperbereiche ist vorteilhaft als Schraube ausgebildet, wobei die Schraube eine Bohrung in einem der Klemmkörperbereiche des Klemmkörpers durchsetzt und in eine Gewindebohrung im anderen Klemmkörperbereich des Klemmkörpers eingeschraubt ist.The means for advancing the sprag areas is advantageously designed as a screw, wherein the screw passes through a hole in one of the sprag areas of the sprag and is screwed into a threaded hole in the other sprag area of the sprag.

Baulich besonders einfach ist die Anschlußklemme aufgebaut und lässt sich überdies baulich besonders einfach herstellen, insbesondere mittels einfacher Bearbeitungsverfahren, wenn die mindestens eine Einrichtung zum Klemmen der Anschlussleitung mindestens eine Anschlussplatte und mindestens eine Leiterklemme aufweist, wobei die Anschlussplatte mit dem Klemmkörper verbunden, insbesondere mittels Schrauben verbunden ist. Die Anschlagplatte stellt sich somit als einfaches, unter Umständen gebogenes und profiliertes Blechteil dar, während der Klemmkörper ein bearbeitetes Vollmaterial ist, das mit den Bohrungen bzw. Gewindebohrungen und dem Schlitz versehen ist.Structurally particularly simple, the terminal is constructed and can also be structurally particularly easy to manufacture, in particular by means of simple Processing method, if the at least one device for clamping the connecting line has at least one connection plate and at least one conductor terminal, wherein the connection plate is connected to the clamping body, in particular by means of screws. The stop plate thus presents itself as a simple, possibly bent and profiled sheet metal part, while the clamping body is a machined solid material, which is provided with the bores or threaded holes and the slot.

Besonders vorteilhaft ist es, wenn nur eine Anschlussplatte vorgesehen ist, die mindestens zwei Vorsprünge, insbesondere zwei Vorsprünge aufweist, wobei der jeweilige Vorsprung dem Aufstecken einer aus dem Stand der Technik bekannten Leiterklemme dient. Je nach der Gestaltung der Leiterklemmen kann die jeweilige Leiterklemme dem Klemmen einer oder zweier Anschlussleitungen dienen. Wenn es gewünscht ist, kann, obwohl die Anschlussplatte zwei Vorsprünge aufweist, nur eine Leiterklemme auf einen der Vorsprünge aufgesteckt werden. Die Anschlußklemme dient demzufolge grundsätzlich dem Anschlieβen von einer bis zu vier Anschlussleitungen.It is particularly advantageous if only one connection plate is provided which has at least two projections, in particular two projections, the respective projection serving to attach a conductor clamp known from the prior art. Depending on the design of the conductor terminals, the respective conductor terminal can be used to clamp one or two connection lines. If desired, although the terminal plate has two projections, only one conductor terminal can be fitted onto one of the projections. As a result, the terminal basically serves to connect one to four connecting cables.

Insbesondere sind die Vorsprünge in der Ebene zur Anschlagplatte oder senkrecht zur Ebene der Anschlagplatte angeordnet. Der jeweilige Vorsprung dient dem Aufstecken einer der Leiterklemmen, wobei eine Anschlussleitung zwischen einem zustellbaren Klemmstück der Leiterklemme und diesem Vorsprung geklemmt ist, wobei die Leiterklemme den Vorsprung hintergreift.In particular, the projections are arranged in the plane to the stop plate or perpendicular to the plane of the stop plate. The respective projection is used to attach one of the conductor terminals, wherein a connecting line is clamped between a deliverable clamping piece of the conductor clamp and this projection, wherein the conductor clamp engages behind the projection.

Weitere Merkmale der Erfindung sind in der Beschreibung der Zeichnung, der Zeichnung und in den Unteransprüchen offenbart, wobei bemerkt wird, dass alle Einzelmerkmale und alle Kombinationen von Einzelmerkmalen weitere erfinderische Ausgestaltungen darstellen.Further features of the invention are disclosed in the description of the drawing, the drawing and in the dependent claims, wherein it is noted that all individual features and all combinations of individual features represent further inventive embodiments.

In der Zeichnung ist die Erfindung anhand mehrerer Ausführungsformen beispielsweise dargestellt, ohne auf diese beschränkt zu sein. Es stellt dar:

Figur 1
eine erste Ausführungsform der erfindungsgemäßen An- schlussklemme, in einer räumlichen Ansicht,
Figur 2
die Anschlussklemme gemäß Figur 1, in einer anderen räum- lichen Ansicht,
Figur 3
die Anschlussklemme gemäß der Figuren 1 und 2, in einer Ansicht gemäß Figur 2, allerdings in einer Explosionsdarstel- lung,
Figur 4
die Anschlussklemme gemäß der Figuren 1 bis 3; in einer Ansicht gemäß Figur 2, allerdings auf einen Anschlussbolzen eines Transformators aufgeschraubt und mit angeschlosse- nen Anschlussleitungen,
Figur 5
die Anordnung gemäß Figur 4, in einer Explosionsdarstel- lung,
Figuren 6 bis 8
eine zweite Ausführungsform der Anschlussklemme, in Dar- stellungen gemäß der Figuren 1 bis 3,
Figuren 9 bis 11
eine dritte Ausführungsform der Anschlussklemme, in Dar- stellungen gemäß der Figuren 1 bis 3,
Figuren 12 bis 14
eine vierte Ausführungsform der Anschlussklemme, in Dar- stellungen gemäß der Figuren 1 bis 3.
In the drawing, the invention is illustrated by means of several embodiments, for example, without being limited thereto. It shows:
FIG. 1
A first embodiment of the terminal according to the invention, in a three-dimensional view,
FIG. 2
the terminal according to FIG. 1 in a different spatial view,
FIG. 3
the terminal according to Figures 1 and 2 , in a view according to FIG. 2 , but in an exploded view,
FIG. 4
the terminal according to FIGS. 1 to 3 ; in a view according to FIG. 2 , but screwed onto a connection bolt of a transformer and with connected connecting cables,
FIG. 5
the arrangement according to FIG. 4 , in an exploded view,
FIGS. 6 to 8
A second embodiment of the terminal, in representations according to the FIGS. 1 to 3 .
FIGS. 9 to 11
a third embodiment of the terminal, in representations according to the FIGS. 1 to 3 .
FIGS. 12 to 14
A fourth embodiment of the terminal, in representations according to the FIGS. 1 to 3 ,

Bei der nachfolgenden Beschreibung wird zunächst auf die Darstellung der Figuren 1 bis 5 Bezug genommen:In the following description, reference will first be made to the representation of FIGS. 1 to 5:

Die erfindungsgemäße Anschlussklemme 1 ist im Wesentlichen durch den quaderförmigen Klemmkörper 2, den in diesen eingeschraubten Erdungsbolzen 3, die mit dem Klemmkörper 2 verschraubte, aus einem Blech hergestellte Anschlussplatte 4, die zwei Vorsprünge 5 aufweist, sowie zwei auf die Vorsprünge 5 aufgesteckte Leiterklemmen 6 und 7 gebildet.The connecting terminal 1 according to the invention is essentially formed by the parallelepipedal clamping body 2, the grounding bolt 3 screwed into the latter, the connecting plate 4 screwed to the clamping body 2 and made of sheet metal, which has two projections 5, and two conductor terminals 6 and 5 mounted on the projections 5 7 formed.

Der aus elektrisch leitendem Vollmaterial hergestellte Klemmkörper 2 ist mit einer Gewindebohrung 8 versehen, die den Klemmkörper 2 durchsetzt und senkrecht zur oberen großen Fläche 9 des Klemmkörpers 2 verläuft. Es handelt sich beispielsweise um ein Gewinde M12, M16, M20, M30.The clamp body 2 made of electrically conductive solid material is provided with a threaded bore 8, which passes through the clamp body 2 and perpendicular to the upper large surface 9 of the clamp body 2 extends. For example, these are threads M12, M16, M20, M30.

Der Klemmkörper 2 ist ferner im Bereich der einen Stirnseite 10 mit einer zentralen Gewindebohrung 11 versehen. In diese ist der Erdungsbolzen 3 mit seinem Gewindeansatz 12 eingeschraubt. Auf den Gewindeansatz 12 ist ferner eine Mutter 13 aufgeschraubt, die die Funktion einer Kontermutter besitzt und bei in den Klemmkörper 2 eingeschraubten Erdungsbolzen 3 gegen den Klemmkörper 2 im Bereich dessen Stirnseite 10 verspannt ist. Im Bereich seines dem Gewindeansatz 12 abgewandten Endes ist der Erdungsbolzen 3 mit einem zylinderischen Ansatz 14 und noch weiter vom Gewindeansatz 12 abgewandt mit einer Kugel 15 versehen, an der ein Erdungskabel befestigt wird.The clamping body 2 is further provided in the region of one end face 10 with a central threaded bore 11. In this, the grounding bolt 3 is screwed with its threaded extension 12. On the threaded extension 12, a nut 13 is further screwed, which has the function of a lock nut and is clamped when screwed into the clamping body 2 grounding bolt 3 against the clamping body 2 in the region of the end face 10. In the region of its end facing away from the threaded neck 12 of the grounding bolt 3 is provided with a cylindrical projection 14 and further away from the threaded extension 12 with a ball 15, to which a grounding cable is attached.

Parallel zur durch die Stirnseite 10 gebildeten Ebene ist der Klemmkörper 2 mit einem Schlitz 16 versehen, der sich nicht nur von der einen Längsseite 17 zur Gewindebohrung 8 erstreckt, sondern auch in den Bereich des Klemmkörpers 2 hinein, der sich zwischen der Gewindebohrung 8 und der anderen Längsseite 18 befindet. Parallel zur Längsachse der zentralen Gewindebohrung 11 ist der Klemmkörper 2 im Bereich zwischen der Stirnseite 10 und dem Schlitz 16, benachbart der Längsseite 17 mit einer Bohrung 19 versehen, die sich in dem Bereich des Klemmkörpers 2, der zwischen den Schlitz 16 und der anderen Stirnseite 25 des Klemmkörpers 2 angeordnet ist, als Gewindebohrung fortsetzt. In die Bohrung 19 ist eine Schraube 20 eingesteckt und in den Gewindeabschnitt der Bohrung eingeschraubt, so dass, aufgrund Anliegen des Kopfes 21 der Schraube 20 an einen Ansatz 22, die aufgrund des Schlitzes 16 gebildeten beiden Klemmkörperbereiche 23 und 24 sich zustellen lassen, somit im Sinne einer Reduzierung der Spaltstärke aufeinander zustellen lassen, mit der Folge einer Reduzierung des Durchmessers der Gewindebohrung 8.Parallel to the plane formed by the end face 10 of the clamping body 2 is provided with a slot 16 which extends not only from the one longitudinal side 17 to the threaded bore 8, but also in the region of the clamping body 2 in which extends between the threaded bore 8 and the other longitudinal side 18 is located. Parallel to the longitudinal axis of the central threaded bore 11 of the clamping body 2 is provided in the region between the end face 10 and the slot 16, adjacent the longitudinal side 17 with a bore 19 extending in the region of the clamping body 2, between the slot 16 and the other end face 25 of the clamping body 2 is arranged, continues as a threaded hole. In the bore 19, a screw 20 is inserted and screwed into the threaded portion of the bore, so that, due to concerns of the head 21 of the screw 20 to a lug 22, the two clamping body regions 23 and 24 formed due to the slot 16 can be, thus in Let sense a reduction in the gap strength to one another, with the result of a reduction in the diameter of the threaded bore. 8

Die andere Stirnseite 25 des Klemmkörpers 2 ist mit zwei Gewindebohrungen versehen. Entsprechend ist ein ebener Plattenabschnitt 26 der Anschlussplatte 4 mit zwei Durchgangsbohrungen 27 versehen. Die Befestigung des Plattenabschnitts 26 am Klemmkörper 2 erfolgt mittels zweier Schrauben 28 mit Unterlegscheiben 29.The other end face 25 of the clamping body 2 is provided with two threaded holes. Accordingly, a flat plate portion 26 of the connection plate 4 is provided with two through-holes 27. The fastening of the plate section 26 on the clamping body 2 by means of two screws 28 with washers 29th

Die Anschlussplatte 4 ist durch den ebenen Plattenabschnitt 26 und die beiden, im rechten Winkel zu diesem in Richtung der Gewindebohrung 8 abgewinkelten Vorsprünge 5 gebildet. In Längsrichtung gesehen weisen diese Vorsprünge einen abgewinkelten Querschnitt auf, mit geringfügig nach oben gerichteten Enden, wobei der obere Bereich des jeweiligen Vorsprungs 5 mit einer Riffelung 30 versehen ist. Die jeweilige Leiterklemme 6 bzw. 7, die mit dem zugeordneten Vorsprung 5 zusammenwirkt, weist ein U-förmiges Basisteil 31 auf, das bei in Längsrichtung des Vorsprungs 5 auf diesen aufgesteckten Zustand den Vorsprung 5 untergreift. Oberhalb des Vorsprungs 5 ist ein Klemmteil 32 der Leiterklemme 6 bzw. 7, das in den parallelen Schenkeln des Basisteils 31 geführt ist, angeordnet. Es dient dem Klemmen einer Anschlussleitung 33 zwischen dem Klemmteil 32 und dem Vorsprung 5, wie es der Darstellung der Figuren 4 und 5 zu entnehmen ist. Mit der Bezugsziffer 34 ist ein Isolierungsmantel der Anschlussleitung 33 bezeichnet. Während die Leiterklemme 6 nur dem Klemmen einer Anschlussleitung 33 dient und demzufolge das Klemmteil 32 unmittelbar mittels einer Stellschraube 35 zugestellt wird, dient die andere Leiterklemme 7 dem Klemmen von zwei Anschlussleitungen 33, womit das Klemmteil 32 zusätzlich eine obere Aufnahme für die zweite Anschlussleitung 33 aufweist und oben auf diese Anschlussleitung ein weiteres Klemmteil 36 einwirkt, das mittels der Stellschraube 35 zustellbar ist. Die jeweilige Stellschraube 35 ist in einer Aufnahme 37 gehalten, die formschlüssig mit den Schenkeln des Basisteils 31 im Bereich dessen oberen Endes verbunden ist.The connection plate 4 is formed by the flat plate portion 26 and the two, at right angles to this in the direction of the threaded bore 8 angled projections 5. Seen in the longitudinal direction, these projections have an angled cross-section, with slightly upwardly directed ends, wherein the upper portion of the respective projection 5 is provided with a corrugation 30. The respective conductor terminal 6 and 7, which cooperates with the associated projection 5, has a U-shaped base part 31 which engages under projection 5 in the longitudinal direction of the projection 5 on this plugged state. Above the projection 5 is a clamping part 32 of the conductor terminal 6 and 7, which is guided in the parallel legs of the base member 31, respectively. It serves to clamp a connecting line 33 between the clamping part 32 and the projection 5, as shown in the illustration of FIGS. 4 and 5 can be seen. The reference numeral 34, an insulating jacket of the connecting line 33 is designated. While the conductor terminal 6 only serves to clamp a connecting line 33 and consequently the clamping part 32 is delivered directly by means of a set screw 35, the other conductor terminal 7 serves to clamp two connecting lines 33, whereby the clamping part 32 additionally has an upper receptacle for the second connecting line 33 and on top of this connecting line, a further clamping part 36 acts, which is undeliverable by means of the adjusting screw 35. The respective adjusting screw 35 is held in a receptacle 37 which is positively connected to the legs of the base part 31 in the region of its upper end.

Figur 4 veranschaulicht den Abgang des Transformators, konkret dessen Transformatorkerze 38, deren Anschlussbolzen 40 mit einem Außengewinde 39 versehen ist, dessen Gewindedurchmesser dem der Gewindebohrung 8 bei nicht gegeneinander verspannten Klemmkörperbereichen 23 und 24 entspricht. Der Transformator dient insbesondere dem Transformieren einer Spannung auf Niederspannung, insbesondere einer Niederspannung kleiner 1 kV. FIG. 4 illustrates the departure of the transformer, specifically its transformer core 38, the terminal bolt 40 is provided with an external thread 39, the thread diameter of which corresponds to the threaded bore 8 at not mutually braced sprag areas 23 and 24. The transformer is used in particular for transforming a voltage to low voltage, in particular a low voltage of less than 1 kV.

Auf den Anschlussbolzen 40 wird der Klemmkörper 2 aufgeschraubt und dann die beiden Klemmkörperbereiche 23 und 24 durch Anziehen der Schraube 20 gegeneinander verspannt. Hierdurch ist der Klemmkörper 2 drehfest mit der Transformatorkerze 38 verbunden. Im Bereich der Anschlussplatte 4 werden mittels der beiden Leiterklemmen 6 und 7 die drei Anschlussleitungen 33 an der Anschlussklemme 1 angeklemmt. Bei Installations- und Wartungsarbeiten wird der Erdungsbolzen 3 mit dem Klemmkörper 2 verbunden und dort durch Anlegen einer Erdungsleitung die Erdung des Transformators herbeigeführt.On the connecting bolt 40, the clamping body 2 is screwed and then clamped the two clamping body portions 23 and 24 by tightening the screw 20 against each other. As a result, the clamping body 2 is rotatably connected to the transformer core 38. In the area of the connection plate 4, the three connection lines 33 are clamped to the connection terminal 1 by means of the two conductor terminals 6 and 7. During installation and maintenance of the grounding pin 3 is connected to the terminal body 2 and there caused by applying a grounding line, the grounding of the transformer.

Die Ausführungsformen gemäß der nachfolgend zu beschreibenden Figuren unterscheiden sich nur geringfügig von der zuvor erörterten Ausführungsform. Übereinstimmende Teile sind der Einfachheit halber mit denselben Bezugsziffern bezeichnet:The embodiments according to the figures to be described below differ only slightly from the previously discussed embodiment. Matching parts are designated by the same reference numerals for the sake of simplicity:

Die Ausführungsform nach den Figuren 6 bis 8 unterscheidet sich von derjenigen nach den Figuren 1 bis 5 nur dadurch, dass die Anschlussplatte 4 insgesamt im Wesentlichen eben ausgebildet ist, somit die beiden Vorsprünge 5 nicht rechtwinklig zum ebenen Plattenabschnitt 26 angeordnet sind, sondern in der Verlängerung des ebenen Plattenabschnitts 26 positioniert sind. Ferner ist die Anschlussplatte 4 so montiert, dass die Riffelung 30 der Vorsprünge 5 dem Erdungsbolzen 3 zugewandt ist. Die angeschlossenen Leiterklemmen 6 und 7 befinden sich somit oberhalb des Klemmkörpers 2.The embodiment according to the FIGS. 6 to 8 is different from the one after the FIGS. 1 to 5 only in that the connecting plate 4 is formed substantially flat overall, thus the two projections 5 are not arranged at right angles to the flat plate portion 26, but are positioned in the extension of the flat plate portion 26. Further, the terminal plate 4 is mounted so that the corrugation 30 of the projections 5 faces the grounding stud 3. The connected conductor terminals 6 and 7 are thus located above the terminal body. 2

Die Ausführungsform nach den Figuren 9 bis 11 unterscheidet sich von derjenigen nach den Figuren 1 bis 5 dadurch, dass die Gewindebohrung 8 einen wesentlich größeren Durchmesser aufweist, insbesondere ein Gewinde M42 oder M48 Verwendung findet und demzufolge diese Anschlussklemme 1 dem Anschließen an einen Anschlussbolzen 40 mit größerem Gewindedurchmesser dient. Um eine sichere Klemmung zwischen Klemmkörper 2 und Anschlussbolzen 40 zu erzielen, ist der Klemmkörper 2 nicht parallel zur Stirnseite 10 geschlitzt, sondern es verläuft der Schlitz 16 parallel und benachbart zur oberen Fläche 9 des Klemmkörpers 2. Statt der Bohrung 19, die bei der Ausführungsform nach den Figuren 1 bis 5 im Bereich der Stirnseite 10 angeordnet ist, sind parallel zur Längsachse der Gewindebohrung 8 zwei Bohrungen 19 vorgesehen, die den einen, oberen Klemmkörperbereich 24 durchsetzen und sich in Gewindebohrungen fortsetzen, die im Bereich des anderen, unteren Klemmkörperbereich 23 vorgesehen sind. Der Schlitz 16 verläuft bei diesem Ausführungsbeispiel parallel zur oberen Fläche 9 des Klemmkörpers 2 zwischen der oberen Fläche 9 und der zentralen Gewindebohrung 11. Mittels der zwei Schrauben 20, die in die Bohrungen 19 bzw. die sich daran anschließenden Gewindeabschnitte eingesteckt bzw. eingeschraubt sind, erfolgt die Verspannung der Klemmkörperbereiche 23 und 24 gegeneinander und damit das Verklemmen von Klemmkörper 2 und Anschlussbolzen 40.The embodiment according to the FIGS. 9 to 11 is different from the one after the FIGS. 1 to 5 in that the threaded bore 8 has a substantially larger diameter, in particular a thread M42 or M48 is used, and consequently this connection terminal 1 serves to connect to a connecting bolt 40 with a larger thread diameter. In order to achieve a secure clamping between the clamping body 2 and connecting bolt 40, the clamping body 2 is not slotted parallel to the end face 10, but it runs the slot 16 parallel and adjacent to the upper Surface 9 of the clamping body 2. Instead of the bore 19, which in the embodiment of the FIGS. 1 to 5 is arranged in the region of the end face 10, two holes 19 are provided parallel to the longitudinal axis of the threaded bore 8, which pass through the one, upper sprag area 24 and continue in threaded holes, which are provided in the region of the other, lower sprag area 23. The slot 16 extends in this embodiment, parallel to the upper surface 9 of the clamping body 2 between the upper surface 9 and the central threaded bore 11. By means of two screws 20 which are inserted or screwed into the holes 19 and the adjoining threaded portions, the clamping of the clamping body regions 23 and 24 against each other and thus the jamming of clamping body 2 and connecting bolt 40.

Die Anordnung der Anschlussplatte 4 am Klemmkörper 2 und das Anschließen der Leiterklemmen 6 und 7 entspricht bei der Ausführungsform nach den Figuren 9 bis 11 der Ausführungsform nach den Figuren 1 bis 5.The arrangement of the terminal plate 4 on the terminal body 2 and the connection of the conductor terminals 6 and 7 corresponds in the embodiment of the FIGS. 9 to 11 the embodiment of the FIGS. 1 to 5 ,

Die Ausführungsform nach den Figuren 12 bis 14 unterscheidet sich von der nach den Figuren 9 bis 11 nur dadurch, dass der Anschluss wie bei der Ausführungsform nach den Figuren 6 bis 8 erfolgt.The embodiment according to the FIGS. 12 to 14 is different from the one after the FIGS. 9 to 11 only in that the connection as in the embodiment of the FIGS. 6 to 8 he follows.

Claims (12)

  1. Connecting terminal (1) for a transformer, in particular for a transformer for transforming a voltage to a low voltage, with a clamping body (2), which has a threaded bore (8) for screwing the clamping body (2) onto a connecting bolt (40) of the transformer, the clamping body (2) being slotted in the region of the threaded bore (8) and having means (20) for delivering the clamping body regions (23, 24) located in the region of the slot (16) for the purpose of clamping the body (2) and the connecting bolt (40), and with at least one device (4, 6, 7) for clamping at least one connecting line (33), characterized in that a grounding bolt (3) is connected to the connecting terminal (1), and the at least one device (4, 6, 7) for clamping the at least one connecting line (33) has a connecting plate (4), which has at least two projections (5), the respective projection (5) being used for plugging on a conductor terminal (6, 7), and the connecting plate (4) being connected to the clamping body (2).
  2. Connecting terminal according to Claim 1, characterized in that the grounding bolt (3) is connected to the clamping body (2), in particular the clamping body (2) has a thread (11) for screwing in the grounding bolt (3).
  3. Connecting terminal according to Claim 1 or 2, characterized in that the grounding bolt (3) is connected to the clamping body (2) in such a manner as to prevent rotation.
  4. Connecting terminal according to one of Claims 1 to 3, characterized in that the grounding bolt (3) receives a locking nut (13) in the region of the thread (12) of said grounding bolt and/or that end of the grounding bolt (3) which faces away from the clamping body (2) is in the form of a sphere (15).
  5. Connecting terminal according to one of Claims 1 to 4, characterized in that the slot plane of the slot (16) in the clamping body (2), in relation to the threaded bore (8) for screwing on the clamping body (2), is arranged radially or perpendicular to the longitudinal axis of the threaded bore (8).
  6. Connecting terminal according to one of Claims 1 to 5, characterized in that the means (20) for delivering the clamping body regions (23) is in the form of at least one screw (20), the screw (20) passing through a bore (19) in one (24) of the clamping body regions (23, 24) and being screwed into a threaded bore in the other clamping body region (23) of the clamping body (2).
  7. Connecting terminal according to one of Claims 1 to 6, characterized in that the connecting plate (4) is connected to the clamping body (2) by means of screws (28).
  8. Connecting terminal according to Claim 7, characterized in that a single connecting plate (4) is provided.
  9. Connecting terminal according to Claim 8, characterized in that the single connecting plate (4) has two projections (5).
  10. Connecting terminal according to one of Claims 1 to 9, characterized in that the respective conductor terminal (6, 7) is used for clamping one or two connecting lines (33).
  11. Connecting terminal according to one of Claims 1 to 10, characterized in that the projections (5) are arranged in the plane with respect to a planar plate section (26) which is connected to the clamping body (2) or perpendicular to the planar plate section (26).
  12. Connecting terminal according to one of Claims 1 to 11, characterized in that two devices (4, 6, 7) are provided for clamping connecting lines (33).
EP07022756A 2007-11-23 2007-11-23 Connecting terminal for a transformer Active EP2063491B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07022756A EP2063491B1 (en) 2007-11-23 2007-11-23 Connecting terminal for a transformer
AT07022756T ATE541338T1 (en) 2007-11-23 2007-11-23 CONNECTION TERMINAL FOR A TRANSFORMER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07022756A EP2063491B1 (en) 2007-11-23 2007-11-23 Connecting terminal for a transformer

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EP2063491A1 EP2063491A1 (en) 2009-05-27
EP2063491B1 true EP2063491B1 (en) 2012-01-11

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CN109410272B (en) * 2018-08-13 2021-05-28 国网陕西省电力公司电力科学研究院 Transformer nut recognition and positioning device and method
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ATE541338T1 (en) 2012-01-15

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