EP2856562B1 - Electric connection system - Google Patents
Electric connection system Download PDFInfo
- Publication number
- EP2856562B1 EP2856562B1 EP13718549.2A EP13718549A EP2856562B1 EP 2856562 B1 EP2856562 B1 EP 2856562B1 EP 13718549 A EP13718549 A EP 13718549A EP 2856562 B1 EP2856562 B1 EP 2856562B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- connection system
- electrical connection
- protrusion
- longitudinal axis
- 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.)
- Not-in-force
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Classifications
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- 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
- H01R4/34—Conductive members located under head of screw
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/26—Pin or blade contacts for sliding co-operation on one side only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2101/00—One pole
Definitions
- the subject matter relates to an electrical connection system, in particular a ground cable with two interconnecting connectors.
- connection of underground cables is known per se. Especially in the area of the medium voltage level, the laying of underground cables is nowadays preferred.
- the problem here is, however, that at the junctions of the cable earthworks are necessary. Ditches are to be excavated and then the cables are to be connected together. Since the exact connection point is not known, pits of different lengths are to dig, which makes the laying of underground cables consuming and expensive.
- the US 2010/0105233 A1 shows a submarine cable.
- a bolt is inserted into a sleeve.
- the bolt is slotted so that a better connection between the bolt and sleeve is formed.
- the contact surface is defined in this arrangement by the circumference of the bolt and the insertion depth and may possibly be too small.
- the object of the object to provide an electrical connection system, which allows a particularly simple laying especially in the field of underground cables.
- the connectors have connection surfaces on the sides facing the respective cables.
- the cables can preferably be arranged cohesively.
- the cables can be welded to the connection surfaces.
- friction welding as will be shown below.
- resistance welding methods are also suitable for making connections between the front ends of the cables and the connecting pieces or connecting surfaces of the connecting pieces.
- the first connector extends toward a pad for one end of the first cable. In this extension direction, the first connector forms a longitudinal axis.
- the second connector extends toward a second pad for one end of the second cable. In this extension direction, the second connector also forms a longitudinal axis.
- the first connector has a receptacle for receiving a projection.
- the projection is formed on the second connector.
- By telescoping the projection into the receptacle it is possible to produce an electrically conductive connection between the two connecting pieces and thus between the cables arranged on the connecting pieces.
- a friction welding of the connector to a cable end allows a small-sized connection.
- the diameter of the connection between connector and Cable is approximately equivalent to the diameter of the cable itself.
- the entire connection thus preferably has a same or smaller diameter than the cable to be connected or is minimal (eg 10%) larger.
- the line ends can be particularly easily connected by means of the subject connection system when the receptacle extends parallel to the first longitudinal axis and the projection parallel to the second Lssensache.
- the projection may then be displaced in the receptacle parallel to the first longitudinal axis (axially to the longitudinal axis), so that telescoping in the direction of the longitudinal axes between the receptacle and projection is possible.
- the so nested connectors form by recording and projection a large contact surface.
- the contact surface formed between the projection and the receptacle is regularly larger than the cross-sectional area of a single cable. This minimizes the contact resistance between the connectors.
- connection system so interconnected cables can be laid in the ground, without having to dug shafts. A horizontal installation by drilling or pushing the cable is possible with the help of the objective connection system.
- the receptacle is a groove running parallel to the longitudinal axis.
- a groove preferably has two groove walls and a groove bottom. The Sum of the surfaces of the two groove walls and the groove bottom is greater than the cross-sectional area of the cable.
- the projection is a parallel to the second longitudinal axis extending web.
- the web preferably corresponds to the groove.
- the area of the web walls is greater than the cross-sectional area of the cable. The web can be inserted into the groove, which is possible by a movement of the web parallel to the longitudinal axis of the cable.
- a particularly low contact resistance between the projection and the receptacle is possible if the cross section of the projection is substantially complementary to the cross section of the receptacle. In this case, the projection nestles particularly well in the recording. This leads to a large contact surface between projection and receptacle, resulting in a low contact resistance.
- the insertion of the projection into the receptacle is particularly easy if the receptacle is V-shaped, bulky or C-shaped.
- the cross section of the connecting piece in particular in the region of the projection, can then be correspondingly complementary thereto.
- the cross section of the second connecting piece in particular in the region of the projection, is T-shaped or L-shaped.
- an axis of the connecting piece serve as a web for the projection and in to intervene.
- the inclusion has a complementary cross-section.
- the two interconnected connectors allow a low contact resistance through a large contact surface.
- a mechanical securing of the connecting pieces to each other is necessary in order to prevent detachment of the projection from the receptacle.
- a torque which acts on one of the connecting pieces can cause the projection is pressed out of the receptacle.
- the projection is secured in the receptacle by a securing element.
- This securing element can pierce a groove base according to an embodiment and be attached to the projection or pierce the projection and be secured in the groove bottom. Depending on the positional relationship between the projection and the receptacle, it may be useful either to push the securing element through the groove base and to secure it with the projection or vice versa.
- the securing element is a screw, in particular a tear-off screw or a screw fastened with a defined torque.
- a tear-off screw or a screw fastened with a defined torque is advantageous in that it prevents the screw from being tightened with torque is so large that the thread shears off.
- the use of a torque wrench is also advantageous because it ensures that the projection is arranged with a defined tightening torque in the receptacle. It has been shown that the contact pressure between projection and recording must be in a defined range in order to produce a sufficiently good contact resistance.
- the length of the recording is selected depending on the current carrying capacity of the connection. In the medium voltage range, there are different requirements for current carrying capacity for cables.
- the connection area between the receptacle and the projection is selected.
- the size of the connection surface is inter alia also dependent on the length of the receptacle in which the projection is inserted.
- the receptacle and projection have approximately the same length.
- At least one connecting piece has a connection surface and that the connecting surface can be connected in a material-locking manner to the cable.
- the cable or the front end of the cable is preferably welded to the connection surfaces by means of a butt welding process, in particular a friction welding process.
- the cohesive connection minimizes the contact resistance between the connection surface and the cable.
- the connectors are also made of aluminum. This has the advantage that no contact resistances or contact corrosion occur at the junctions between the cables and the connecting pieces.
- the surface of the connectors be tinned. It is also possible that the surface is first nickel-plated and then tinned. The nickel plating achieves a durable coating and tin plating allows low contact resistance to be achieved.
- a stripped cable end be disposed in a sleeve.
- the sleeve may be pressed around the cable ends so that the individual strands or wires of the stripped cable are firmly pressed.
- the front end of the sleeve can be cut off or überfrässt so that the cable ends terminate at the front ends of the sleeve and are free of alumina.
- the connecting piece which may have an end face facing the cable end, can be welded to the sleeve and the cable end along the end face.
- a friction welding in particular a rotary friction welding can be applied.
- an ultrasonic welding or a Resistance welding is used to weld the connectors to the sleeve and cable ends.
- the sleeve is formed of aluminum.
- the sleeve can also be tinned and / or nickel-plated, as described above.
- a particularly high electrical conductivity is achieved when using aluminum cables, if they have a high purity.
- the use of Al 99.5 has proved to be advantageous.
- the use of higher or lower grade aluminum is possible.
- the pad has a diameter that is less than or equal to the cable diameter.
- the connecting piece preferably has a diameter which is smaller than or equal to the diameter of the cable. This is particularly advantageous if the cable is to be laid in the ground and preferably to be propelled by pushing.
- the compound which preferably has a diameter corresponding to the cable diameter, a maximum of 10% is greater or less, it is ensured that even the junction can be installed in the ground. The digging of a trench is avoided.
- the support sleeve is shorter than the stripped end of the cable to a distance to a cable insulation at the stripped end of the cable Cable is arranged.
- a free space in which a clamping element can engage With the help of this clamping element, it is possible to exert a force in the direction of the connection between recording and projection.
- an insulating sleeve is preferably placed around the connecting pieces.
- the connecting pieces in order to allow the insulating sleeve to absorb tensile forces in the longitudinal direction, this must be applied to the connecting pieces.
- the connecting pieces according to an embodiment in a plane perpendicular to the longitudinal axis extending, at least partially around the connecting pieces circumferential flanges. Ring shoulders of insulating sleeves can rest against these flanges.
- the flanges may also be formed by a space formed between the support sleeves and the insulation of the cables.
- the insulating sleeve prevents environmental influences from acting on the electrical connection at the connecting pieces.
- the insulating sleeve may be configured to seal the electrical connection to the connectors so that moisture can not reach the electrical connection.
- the insulation sleeve bears moisture-tight on the insulation of the cable in the region of the cable end. This can be realized for example by the use of an O-ring.
- a shrink tube is shrunk around the insulation sleeve and is shrunk to the insulation of the cable.
- an insulating sleeve acts on the flanges and holds the connecting pieces in the longitudinal direction against each other.
- the insulating sleeve is in two parts, wherein a first part is arranged on the flange of the first connector and a second part is arranged on the flange of the second connector and wherein the parts are captive mechanically connected to one another, such that in Connected state a force exerted by the parts on the connecting pieces parallel to the longitudinal axis force pushes the connecting pieces in the longitudinal axis towards each other. This creates a further strain relief in the longitudinal direction.
- the parts of the insulating sleeve can be screwed together, for example, or are formed as a bayonet closure, so that one part locked in the other part.
- a groove nut for receiving a hook key is arranged on at least one part, wherein by means of the groove nut, the first part with the second part is screwed.
- FIG. 1 shows a connection system 2 with two connecting pieces 4, 6 which are arranged with connecting surfaces 4a, 6a at the front ends of cables 8, 10 cohesively.
- connecting pieces 4, 6 Like in the FIG. 2 can be seen extending the connecting pieces 4, 6 along a respective longitudinal axis 12, 14 of the respective cable 8, 10.
- the connecting pieces 4, 6 preferably extend parallel to the longitudinal axes 12, 14th
- the connecting pieces 4, 6 extend into a receptacle 16 or a projection 18.
- the projection 18 is arranged in the receptacle 16. A conductive connection between the cables 8, 10 or the strands of the cables 8, 10 is ensured via the connecting pieces 4, 6 or the contact surfaces between the projection 18 and receptacle 16.
- the strands of the cables 8, 10 are exposed in a respectively stripped area 8b, 10b of the cable 8, 10.
- a support sleeve 20, 22 is pushed over the strands.
- the support sleeve 20, 22 presses the strands of the cables 8, 10 such that they can be welded to the connecting pieces 4, 6 by means of a butt-welding process.
- Friction welding methods are particularly suitable for this purpose.
- rotational friction welding or ultrasonic welding is suitable for connecting between connecting piece 4, 6 and cable 8, 10. Resistance welding methods are also possible.
- FIG. 1 can also be seen extending the support sleeves 20, 22, starting from the front ends of the cables 8, 10 in the region of the stripped ends 8b, 10b.
- the support sleeves 20, 22 are shorter than the length of the stripped ends 8b, 10b, so that a gap between the support sleeve 20 and the respective insulation 8a, 10a is formed.
- an insulating sleeve can be used.
- the support sleeve 20, 22 can form with this intermediate space a flange of a connecting piece 4, 6, to which the insulating sleeve acts.
- FIG. 2 shows a view of the connecting pieces 4, 6. It can be seen that the connecting piece 4 extends into the projection 18. In the region of the projection 18, the connecting piece 4 has a T-shaped cross section.
- the receptacle 16 of the connecting piece 6 extends from the connecting surface 4a and has a V-shaped cross section.
- the receptacle 16 is formed as a groove, whereas the projection 18 is formed as a web.
- a displacement along the longitudinal axes 12, 14 allows the nesting of projection 18 in the groove 16.
- the lateral surfaces of the projection 18 and groove 16 are adjacent to each other, so that a low contact resistance is realized.
- the connecting pieces 4, 6 are preferably formed of aluminum.
- the connecting pieces 4, 6 can be nickel-plated and tinned.
- a fixation of the connecting pieces 4, 6 to each other, in particular the prevention of movement of the connecting pieces 4, 6 parallel to the longitudinal pieces 14, 12 may be realized by a securing element.
- a securing element Such is in the FIG. 3 shown.
- connection system 2 additionally secured with a screw 24.
- the screw 24 connects the projection 18 with the receptacle 16.
- the screw 24 is inserted through a through hole 26 in the projection 18.
- a thread 28 is disposed in the groove bottom of the receptacle 16.
- the screw 24 can be screwed.
- FIG. 5 shows a connection system 2 according to the FIG. 1 in which, however, the screw 24 is screwed through the receptacle 16 into the projection 18. This can also be seen in section IV.
- FIG. 6 shows the section of the VI FIG. 5 , It can be seen that the screw 24 is pushed through a through hole 30 and is screwed into a thread 32 in the projection 18.
- the screw 24 is tightened either with a torque wrench to prevent the threads 28, 32 from shearing off or provided with a tear-off head.
- the tear-off prevents the screw 24 is screwed with too much torque.
- 6 care must be taken that the threads 28, 32 at Screwing with the screw 24 should not be sheared off.
- a defined contact pressure of projection 18 in receptacle 18 must be ensured in order to allow a defined contact resistance.
- FIG. 7 shows a further embodiment of a connection system 2 according to the FIG. 3 .
- an insulation sleeve 34 is provided which is designed in two parts. Via a thread 36, the two parts of the insulating sleeve 34 can be screwed together.
- screwing flanges 38 of the insulating sleeve 34 engage behind the respective support sleeves 20, 22 in the region between the insulation 8a, 10a and the support sleeves 22, 20. Thereby, a force in the direction of the connecting pieces 4, 6 exercisable, so that the connecting pieces 4, 6 in one another be pressed. This prevents disassembly of projection 18 from the receptacle 16th
- FIG. 8 shows a possible cross section of projection 18 and receptacle 16.
- the receptacle is V-shaped, and the projection 18 is T-shaped. In this case, however, the projection 18 is formed tapering in the direction of the receptacle 16.
- FIG. 9 shows another possible cross section, in which the projection 18 is T-shaped and the receptacle 16 I-shaped. Also in the FIG. 9 It can be seen that the outer circumference of projection 18 and receptacle 16 is circular arc-shaped, in particular with a radius which is smaller or approximately equal to the radius of the respective cable 8, 10.
- FIG. 10 shows a further embodiment in which the projection 18 and the receptacle 16 are each formed in a semi-circular complementary to each other.
- connection system shown With the help of the connection system shown is in particular possible to lay underground cables, bypassing earth movements. In particular, it is not necessary to dig trenches for the connection of the cables and then make a manual connection. Rather, it is possible to connect the cables in advance with each other and then move into shafts or to drive directly through the soil.
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Description
Der Gegenstand betrifft ein elektrisches Verbindungssystem, insbesondere eines Erdkabels mit zwei miteinander verbindbaren Verbindungsstücken.The subject matter relates to an electrical connection system, in particular a ground cable with two interconnecting connectors.
Die Verbindung von elektrischen Kabeln mittels Verbindungsstücken ist hinlänglich bekannt.The connection of electrical cables by means of connectors is well known.
Auch ist das Verbinden von Erdkabeln an sich bekannt. Insbesondere im Bereich der Mittelspannungsebene wird heutzutage die Verlegung von Erdkabeln bevorzugt. Problematisch ist hierbei jedoch, dass an den Verbindungsstellen der Kabel regelmäßig Erdarbeiten notwendig sind. Es sind Gräben auszuheben, und anschließend sind die Kabel darin miteinander zu verbinden. Da der exakte Verbindungspunkt nicht bekannt ist, sind Gruben unterschiedlicher Länge zu graben, was die Verlegung von Erdkabeln aufwändig und teuer macht.Also, the connection of underground cables is known per se. Especially in the area of the medium voltage level, the laying of underground cables is nowadays preferred. The problem here is, however, that at the junctions of the cable earthworks are necessary. Ditches are to be excavated and then the cables are to be connected together. Since the exact connection point is not known, pits of different lengths are to dig, which makes the laying of underground cables consuming and expensive.
Die
Aus diesem Grunde lag dem Gegenstand die Aufgabe zugrunde, ein elektrisches Verbindungssystem zur Verfügung zu stellen, welches insbesondere im Bereich der Erdkabel eine besonders einfache Verlegung ermöglicht.For this reason, the object of the object to provide an electrical connection system, which allows a particularly simple laying especially in the field of underground cables.
Diese Aufgabe wird durch ein elektrisches Verbindungssystem nach Anspruch 1 gelöst.This object is achieved by an electrical connection system according to claim 1.
Die Verbindungsstücke haben an den den jeweiligen Kabeln zugewandten Seiten Anschlussflächen. An den Anschlussflächen der jeweiligen Verbindungsstücke können die Kabel vorzugsweise stoffschlüssig angeordnet werden. Insbesondere in einem vorkonfektionierten Zustand können die Kabel an den Anschlussflächen angeschweißt sein. Hierzu eignen sich insbesondere Reibschweißverfahren, wie nachfolgend noch dargestellt werden wird. Andererseits sind jedoch auch Widerstandschweißverfahren geeignet, um Verbindungen zwischen den stirnseitigen Enden der Kabel und den Verbindungsstücken bzw. den Anschlussflächen der Verbindungsstücke herzustellen. Das erste Verbindungsstück erstreckt sich in Richtung einer Anschlussfläche für ein Ende des ersten Kabels. In dieser Erstreckungsrichtung bildet das erste Verbindungsstück eine Längsachse aus.The connectors have connection surfaces on the sides facing the respective cables. At the connection surfaces the respective connecting pieces, the cables can preferably be arranged cohesively. In particular, in a prefabricated state, the cables can be welded to the connection surfaces. For this purpose, in particular friction welding, as will be shown below. On the other hand, however, resistance welding methods are also suitable for making connections between the front ends of the cables and the connecting pieces or connecting surfaces of the connecting pieces. The first connector extends toward a pad for one end of the first cable. In this extension direction, the first connector forms a longitudinal axis.
Das zweite Verbindungsstück erstreckt sich in Richtung einer zweiten Anschlussfläche für ein Ende des zweiten Kabels. In dieser Erstreckungsrichtung bildet das zweite Verbindungsstück ebenfalls eine Längsachse aus.The second connector extends toward a second pad for one end of the second cable. In this extension direction, the second connector also forms a longitudinal axis.
Das erste Verbindungsstück hat eine Aufnahme zur Aufnahme eines Vorsprungs. Der Vorsprung ist an dem zweiten Verbindungsstück gebildet. Durch Ineinanderschieben des Vorsprungs in die Aufnahme ist es möglich, eine elektrisch leitende Verbindung zwischen den beiden Verbindungsstücken und somit zwischen den an den Verbindungsstücken angeordneten Kabeln herzustellen. Insbesondere ein Reibschweißen des Verbindungsstücks an ein Kabelende ermöglicht eine kleinbauende Verbindung. Der Durchmesser der Verbindung zwischen Verbindungsstück und Kabel ist in etwa dem Durchmesser des Kabels selbst entsprechend. Die gesamte Verbindung hat somit vorzugsweise einen gleichen oder kleineren Durchmesser als die zu verbindenden Kabel oder ist minimal (z.B. 10%) größer.The first connector has a receptacle for receiving a projection. The projection is formed on the second connector. By telescoping the projection into the receptacle, it is possible to produce an electrically conductive connection between the two connecting pieces and thus between the cables arranged on the connecting pieces. In particular, a friction welding of the connector to a cable end allows a small-sized connection. The diameter of the connection between connector and Cable is approximately equivalent to the diameter of the cable itself. The entire connection thus preferably has a same or smaller diameter than the cable to be connected or is minimal (eg 10%) larger.
Die Leitungsenden können mit Hilfe des gegenständlichen Verbindungssystems besonders leicht verbunden werden, wenn sich die Aufnahme parallel zur ersten Längsachse erstreckt und der Vorsprung parallel zur zweiten Längsache. Der Vorsprung kann dann in der Aufnahme parallel zu der ersten Längsachse (axial zur Längsachse) verschoben sein, so dass ein Ineinanderschieben in Richtung der Längsachsen zwischen Aufnahme und Vorsprung möglich ist. Die so ineinander gesteckten Verbindungsstücke bilden durch Aufnahme und Vorsprung eine große Kontaktfläche. Die zwischen Vorsprung und Aufnahme gebildete Kontaktfläche ist regelmäßig größer als die Querschnittsfläche eines einzelnen Kabels. Dadurch wird der Übergangswiderstand zwischen den Verbindungsstücken minimiert.The line ends can be particularly easily connected by means of the subject connection system when the receptacle extends parallel to the first longitudinal axis and the projection parallel to the second Längsache. The projection may then be displaced in the receptacle parallel to the first longitudinal axis (axially to the longitudinal axis), so that telescoping in the direction of the longitudinal axes between the receptacle and projection is possible. The so nested connectors form by recording and projection a large contact surface. The contact surface formed between the projection and the receptacle is regularly larger than the cross-sectional area of a single cable. This minimizes the contact resistance between the connectors.
Wird anschließend der Vorsprung in der Aufnahme gegenüber einem Verdrehen gesichert, kann eine verliersichere Verbindung zwischen den Verbindungsstücken gewährleistet sein. Nach einer Isolierung des Verbindungssystems können derart miteinander verbundene Kabel auch im Erdreich verlegt werden, ohne dass Schächte gegraben werden müssen. Eine horizontal Verlegung durch bohren oder stoßen des Kabels ist mit Hilfe des gegenständlichen Verbindungssystems möglich.If subsequently the projection in the receptacle is secured against rotation, a captive connection between the connecting pieces can be ensured. After insulation of the connection system so interconnected cables can be laid in the ground, without having to dug shafts. A horizontal installation by drilling or pushing the cable is possible with the help of the objective connection system.
Gemäß der Erfindung wird vorgeschlagen, dass die Aufnahme eine parallel zur Längsachse laufende Nut ist. Eine Nut hat vorzugsweise zwei Nutwände und einen Nutgrund. Die Summe der Oberflächen der beiden Nutwände und des Nutgrunds ist größer als die Querschnittsfläche des Kabels.According to the invention, it is proposed that the receptacle is a groove running parallel to the longitudinal axis. A groove preferably has two groove walls and a groove bottom. The Sum of the surfaces of the two groove walls and the groove bottom is greater than the cross-sectional area of the cable.
Auch wird vorgeschlagen, dass der Vorsprung ein parallel zur zweiten Längsachse verlaufender Steg ist. Hierbei korrespondiert vorzugsweise der Steg zu der Nut. In diesem Fall ist vorzugsweise auch die Fläche der Stegwände größer als die Querschnittsfläche des Kabels. Der Steg kann in die Nut eingeschoben werden, was durch eine Bewegung des Stegs parallel zur Längsachse der Kabel möglich ist.It is also proposed that the projection is a parallel to the second longitudinal axis extending web. In this case, the web preferably corresponds to the groove. In this case, preferably, the area of the web walls is greater than the cross-sectional area of the cable. The web can be inserted into the groove, which is possible by a movement of the web parallel to the longitudinal axis of the cable.
Ein besonders geringer Übergangswiderstand zwischen Vorsprung und Aufnahme ist dann möglich, wenn der Querschnitt des Vorsprungs im Wesentlichen komplementär zum Querschnitt der Aufnahme ist. In diesem Fall schmiegt sich der Vorsprung besonders gut in die Aufnahme. Dies führt zu einer großen Berührfläche zwischen Vorsprung und Aufnahme, die zu einem geringen Übergangswiderstand.A particularly low contact resistance between the projection and the receptacle is possible if the cross section of the projection is substantially complementary to the cross section of the receptacle. In this case, the projection nestles particularly well in the recording. This leads to a large contact surface between projection and receptacle, resulting in a low contact resistance.
Das Einschieben des Vorsprungs in die Aufnahme ist insbesondere dann leicht, wenn die Aufnahme V-förmig, Unförmig oder C-förmig ist.The insertion of the projection into the receptacle is particularly easy if the receptacle is V-shaped, bulky or C-shaped.
Der Querschnitt des Verbindungsstücks, insbesondere im Bereich des Vorsprungs, kann dann komplementär hierzu entsprechend sein.The cross section of the connecting piece, in particular in the region of the projection, can then be correspondingly complementary thereto.
Auch wird vorgeschlagen, dass der Querschnitt des zweiten Verbindungsstücks, insbesondere im Bereich des Vorsprungs, T-förmig oder L-förmig ist. Hierbei kann jeweils eine Achse des Verbindungsstücks als Steg für den Vorsprung dienen und in die Aufnahme eingreifen. Auch in diesem Fall wird vorgeschlagen, dass die Aufnahme einen hierzu komplementären Querschnitt hat.It is also proposed that the cross section of the second connecting piece, in particular in the region of the projection, is T-shaped or L-shaped. In this case, in each case an axis of the connecting piece serve as a web for the projection and in to intervene. Also in this case, it is proposed that the inclusion has a complementary cross-section.
Die beiden miteinander verbundenen Verbindungsstücke ermöglichen einen geringen Übergangswiderstand durch eine große Berührfläche. Eine mechanische Sicherung der Verbindungsstücke zueinander ist notwendig, um ein Lösen des Vorsprungs aus der Aufnahme zu verhindern. Insbesondere ein Drehmoment, welches auf eines der Verbindungsstücke wirkt, kann dazu führen, dass der Vorsprung aus der Aufnahme gedrückt wird. Um die in die Verbindungsstelle eingeleiteten Kräfte aufnehmen zu können, und so eine sichere Verbindung zwischen Vorsprung und Aufnahme zu gewährleisten, wird vorgeschlagen, dass im verbundenen Zustand der Vorsprung in der Aufnahme durch ein Sicherungselement befestigt ist.The two interconnected connectors allow a low contact resistance through a large contact surface. A mechanical securing of the connecting pieces to each other is necessary in order to prevent detachment of the projection from the receptacle. In particular, a torque which acts on one of the connecting pieces, can cause the projection is pressed out of the receptacle. In order to accommodate the forces introduced into the joint, and thus to ensure a secure connection between the projection and recording, it is proposed that in the connected state, the projection is secured in the receptacle by a securing element.
Dieses Sicherungselement kann gemäß einem Ausführungsbeispiel einen Nutgrund durchstoßen und an dem Vorsprung befestigt sein oder den Vorsprung durchstoßen und in dem Nutgrund befestigt sein. Je nach Lagebeziehung zwischen Vorsprung und Aufnahme kann es sinnvoll sein, entweder das Sicherungselement durch den Nutgrund zu schieben und mit dem Vorsprung zu befestigen oder umgekehrt.This securing element can pierce a groove base according to an embodiment and be attached to the projection or pierce the projection and be secured in the groove bottom. Depending on the positional relationship between the projection and the receptacle, it may be useful either to push the securing element through the groove base and to secure it with the projection or vice versa.
Gemäß einem Ausführungsbeispiel wird vorgeschlagen, dass das Sicherungselement eine Schraube, insbesondere eine Abreißschraube oder eine mit einem definierten Drehmoment befestigte Schraube ist. Die Verwendung einer Abreißschraube oder eine mit einem definierten Drehmoment befestigte Schraube ist insofern vorteilhaft, als das dies verhindert, dass die Schraube mit einem Drehmoment angezogen wird, dass derart groß ist, dass das Gewinde abschert. Auf der anderen Seite ist die Verwendung eines Drehmomentschlüssels ebenfalls vorteilhaft, da dadurch gesichert ist, dass der Vorsprung mit einem definierten Anzugsmoment in der Aufnahme angeordnet ist. Es hat sich nämlich gezeigt, dass die Anpresskraft zwischen Vorsprung und Aufnahme in einem definierten Bereich liegen muss, um einen ausreichend guten Übergangswiderstand herzustellen.According to one embodiment, it is proposed that the securing element is a screw, in particular a tear-off screw or a screw fastened with a defined torque. The use of a tear-off screw or a screw fastened with a defined torque is advantageous in that it prevents the screw from being tightened with torque is so large that the thread shears off. On the other hand, the use of a torque wrench is also advantageous because it ensures that the projection is arranged with a defined tightening torque in the receptacle. It has been shown that the contact pressure between projection and recording must be in a defined range in order to produce a sufficiently good contact resistance.
Auch wird vorgeschlagen, dass die Länge der Aufnahme abhängig von der Stromtragfähigkeit der Verbindung gewählt ist. Im Mittelspannungsbereich gibt es unterschiedliche Anforderungen an die Stromtragfähigkeit für Kabel. Abhängig von der geforderten Stromstärke wird die Verbindungsfläche zwischen Aufnahme und Vorsprung gewählt. Die Größe der Verbindungsfläche ist unter anderem auch abhängig von der Länge der Aufnahme, in die der Vorsprung eingesetzt ist. Vorzugsweise haben Aufnahme und Vorsprung in etwa eine gleiche Länge.It is also proposed that the length of the recording is selected depending on the current carrying capacity of the connection. In the medium voltage range, there are different requirements for current carrying capacity for cables. Depending on the required amperage, the connection area between the receptacle and the projection is selected. The size of the connection surface is inter alia also dependent on the length of the receptacle in which the projection is inserted. Preferably, the receptacle and projection have approximately the same length.
Gemäß einem Ausführungsbeispiel wird vorgeschlagen, dass zumindest ein Verbindungsstück eine Anschlussfläche aufweist und dass die Anschlussfläche stoffschlüssig mit dem Kabel verbindbar ist. An den Anschlussflächen wird vorzugsweise mittels eines Stumpfschweißverfahrens, insbesondere eines Reibschweißverfahrens, das Kabel bzw. das stirnseitige Ende des Kabels angeschweißt. Durch das stoffschlüssige Verbinden wird der Übergangswiderstand zwischen Anschlussfläche und Kabel minimiert. Es besteht eine vorzugsweise sortenreine Verbindung zwischen Verbindungsstück und Kabel, wenn diese aus Metallen gleichen Charakters hergestellt sind.According to one exemplary embodiment, it is proposed that at least one connecting piece has a connection surface and that the connecting surface can be connected in a material-locking manner to the cable. The cable or the front end of the cable is preferably welded to the connection surfaces by means of a butt welding process, in particular a friction welding process. The cohesive connection minimizes the contact resistance between the connection surface and the cable. There is a preferably unmixed connection between connector and cable, if they are made of metals of the same character.
Bei der Verwendung von Aluminiumkabeln ist zu bevorzugen, dass die Verbindungsstücke ebenfalls aus Aluminium gebildet sind. Dies hat den Vorteil, dass keine Übergangswiderstände oder Kontaktkorrosionen an den Übergängen zwischen den Kabeln und den Verbindungsstücken entstehen.When using aluminum cables, it is preferable that the connectors are also made of aluminum. This has the advantage that no contact resistances or contact corrosion occur at the junctions between the cables and the connecting pieces.
Um zu verhindern, dass sich auf der Oberfläche der Verbindungsstücke Aluminiumoxid bildet, wird vorgeschlagen, dass die Oberfläche der Verbindungsstücke verzinnt ist. Auch ist es möglich, dass die Oberfläche zunächst vernickelt und anschließend verzinnt ist. Durch die Unternickelung wird eine dauerhafte Beschichtung erreicht und die Verzinnung ermöglicht die Erzielung eines geringen Kontaktwiderstandes.In order to prevent alumina from forming on the surface of the connectors, it is proposed that the surface of the connectors be tinned. It is also possible that the surface is first nickel-plated and then tinned. The nickel plating achieves a durable coating and tin plating allows low contact resistance to be achieved.
Um die Verbindungsstücke sicher mit den Kabeln zu verbinden, wird vorgeschlagen, dass ein abisoliertes Kabelende in einer Hülse angeordnet ist. Insbesondere wenn die Verbindungsstücke aus Kupfer und die Kabel aus Aluminium gebildet sind, ist eine sichere Verbindungstechnik notwendig. Die Hülse kann so um die Kabelenden gepresst sein, dass die einzelnen Litzen oder Drähte des abisolierten Kabels fest verpresst sind. Anschließend kann das stirnseitige Ende der Hülse abgeschnitten oder überfräßt werden, so dass die Kabelenden an den stirnseitigen Enden der Hülse enden und frei von Aluminiumoxid sind. Anschließend kann das Verbindungsstück, welches eine dem Kabelende zugewandte Stirnfläche aufweisen kann, mit der Hülse und dem Kabelende entlang der Stirnfläche verschweißt werden.To securely connect the connectors to the cables, it is proposed that a stripped cable end be disposed in a sleeve. In particular, when the connectors are made of copper and the cables are made of aluminum, a secure connection technique is necessary. The sleeve may be pressed around the cable ends so that the individual strands or wires of the stripped cable are firmly pressed. Subsequently, the front end of the sleeve can be cut off or überfrässt so that the cable ends terminate at the front ends of the sleeve and are free of alumina. Subsequently, the connecting piece, which may have an end face facing the cable end, can be welded to the sleeve and the cable end along the end face.
Hierbei kann beispielsweise ein Reibschweißen, insbesondere ein Rotationsreibschweißen angewandt werden. Auch ist es möglich, dass ein Ultraschallschweißen oder ein Widerstandsschweißen verwendet wird, um die Verbindungsstücke mit der Hülse und den Kabelenden zu verschweißen.Here, for example, a friction welding, in particular a rotary friction welding can be applied. Also, it is possible that an ultrasonic welding or a Resistance welding is used to weld the connectors to the sleeve and cable ends.
Auch wird vorgeschlagen, dass die Hülse aus Aluminium gebildet ist. Hierbei kann auch die Hülse verzinnt und/oder vernickelt sein, wie zuvor beschrieben wurde.It is also proposed that the sleeve is formed of aluminum. In this case, the sleeve can also be tinned and / or nickel-plated, as described above.
Eine besonders hohe elektrische Leitfähigkeit wird bei der Verwendung von Aluminiumkabeln erreicht, wenn diese eine hohe Reinheit aufweisen. Insbesondere die Verwendung von Al 99,5 hat sich als vorteilhaft erwiesen. Jedoch ist auch die Verwendung von höher- oder geringerwertigem Aluminium möglich.A particularly high electrical conductivity is achieved when using aluminum cables, if they have a high purity. In particular, the use of Al 99.5 has proved to be advantageous. However, the use of higher or lower grade aluminum is possible.
Es wird vorgeschlagen, dass die Anschlussfläche einen Durchmesser hat, der kleiner oder gleich dem Kabeldurchmesser ist. Hierdurch kann gewährleistet sein, dass das Verbindungsstück vorzugsweise einen Durchmesser hat, der kleiner oder gleich dem Durchmesser des Kabels ist. Dies ist insbesondere dann von Vorteil, wenn das Kabel im Erdboden verlegt werden soll und vorzugsweise mittels Schieben vorangetrieben werden soll. Durch die Verbindung, die vorzugsweise einen Durchmesser hat, der dem Kabeldurchmesser entspricht, maximal 10% größer oder kleiner ist, wird sichergestellt, das selbst die Verbindungsstelle im Erdboden verlegt werden kann. Das Ausheben eines Grabens wird vermieden.It is suggested that the pad has a diameter that is less than or equal to the cable diameter. In this way it can be ensured that the connecting piece preferably has a diameter which is smaller than or equal to the diameter of the cable. This is particularly advantageous if the cable is to be laid in the ground and preferably to be propelled by pushing. By the compound, which preferably has a diameter corresponding to the cable diameter, a maximum of 10% is greater or less, it is ensured that even the junction can be installed in the ground. The digging of a trench is avoided.
Um eine Spannkraft auf Vorsprung und Aufnahme in Längsachse ausüben zu können, wird vorgeschlagen, dass die Stützhülse kurzer als das abisolierte Ende des Kabels ist um mit einem Abstand zu einer Kabelisolierung an dem abisolierten Ende des Kabels angeordnet ist. In diesem Fall entsteht zwischen der Kabelisolierung und der Stützhülse ein Freiraum, in dem ein Spannelement eingreifen kann. Mit Hilfe dieses Spannelements ist es möglich, eine Kraft in Richtung der Verbindung zwischen Aufnahme und Vorsprung auszuüben.In order to exert a clamping force on the projection and receiving in the longitudinal axis, it is proposed that the support sleeve is shorter than the stripped end of the cable to a distance to a cable insulation at the stripped end of the cable Cable is arranged. In this case arises between the cable insulation and the support sleeve, a free space in which a clamping element can engage. With the help of this clamping element, it is possible to exert a force in the direction of the connection between recording and projection.
Um die Verbindung der Verbindungsstücke zu sichern, wird vorzugsweise eine Isolationshülse um die Verbindungsstücke gelegt. Um der Isolationshülse zu ermöglichen, Zugkräfte in Längsrichtung aufzunehmen, muss diese an den Verbindungsstücken anliegen. Aus diesem Grunde weisen die Verbindungsstücke gemäß einem Ausführungsbeispiel in einer Ebene senkrecht zur Längsachse verlaufende, zumindest teilweise um die Verbindungsstücke umlaufende Flansche auf. An diesen Flanschen können Ringschultern von Isolationshülsen anliegen. Die Flansche können auch durch einen zwischen den Stützhülsen und der Isolation der Kabel gebildeten Zwischenraum gebildet sein.In order to secure the connection of the connecting pieces, an insulating sleeve is preferably placed around the connecting pieces. In order to allow the insulating sleeve to absorb tensile forces in the longitudinal direction, this must be applied to the connecting pieces. For this reason, the connecting pieces according to an embodiment in a plane perpendicular to the longitudinal axis extending, at least partially around the connecting pieces circumferential flanges. Ring shoulders of insulating sleeves can rest against these flanges. The flanges may also be formed by a space formed between the support sleeves and the insulation of the cables.
Die Isolationshülse verhindert, dass auf die elektrische Verbindung an den Verbindungsstücken Umwelteinflüsse wirken. Die Isolationshülse kann so ausgestaltet sein, dass sie die elektrische Verbindung an den Verbindungsstücken abdichtet, so dass Feuchtigkeit nicht an die elektrische Verbindung heranlangen kann. Hierzu ist es beispielsweise möglich, dass die Isolationshülse feuchtigkeitsdicht an der Isolation des Kabels im Bereich des Kabelendes anliegt. Dies kann beispielsweise durch die Verwendung eines O-Rings realisiert werden. Auch ist es möglich, dass ein Schrumpfschlauch um die Isolationshülse geschrumpft wird und an die Isolation des Kabels angeschrumpft wird.The insulating sleeve prevents environmental influences from acting on the electrical connection at the connecting pieces. The insulating sleeve may be configured to seal the electrical connection to the connectors so that moisture can not reach the electrical connection. For this purpose, it is possible, for example, that the insulation sleeve bears moisture-tight on the insulation of the cable in the region of the cable end. This can be realized for example by the use of an O-ring. It is also possible that a shrink tube is shrunk around the insulation sleeve and is shrunk to the insulation of the cable.
Gemäß einem Ausführungsbeispiel wird vorgeschlagen, dass eine Isolationshülse an den Flanschen angreift und die Verbindungsstücke in Längsrichtung aneinander hält.According to one embodiment, it is proposed that an insulating sleeve acts on the flanges and holds the connecting pieces in the longitudinal direction against each other.
Gemäß einem Ausführungsbeispiel wird vorgeschlagen, dass die Isolationshülse zweiteilig ist, wobei ein erster Teil an dem Flansch des ersten Verbindungsstücks angeordnet ist und ein zweiter Teil an dem Flansch des zweiten Verbindungsstücks angeordnet ist und wobei die Teile verliersicher miteinander mechanisch verbindbar sind, derart, dass im verbundenen Zustand eine durch die Teile auf die Verbindungsstücke parallel zur Längsachse ausgeübte Kraft die Verbindungsstücke in Längsachse aufeinander zu drückt. Hierdurch entsteht eine weitere Zugentlastung in Längsrichtung.According to one embodiment, it is proposed that the insulating sleeve is in two parts, wherein a first part is arranged on the flange of the first connector and a second part is arranged on the flange of the second connector and wherein the parts are captive mechanically connected to one another, such that in Connected state a force exerted by the parts on the connecting pieces parallel to the longitudinal axis force pushes the connecting pieces in the longitudinal axis towards each other. This creates a further strain relief in the longitudinal direction.
Die Teile der Isolationshülse lassen sich beispielsweise miteinander verschrauben oder sind als Bajonettverschluss gebildet, so dass ein Teil in dem anderen Teil verrastet.The parts of the insulating sleeve can be screwed together, for example, or are formed as a bayonet closure, so that one part locked in the other part.
Zum Befestigen der Isolationshülse bzw. der Teile miteinander müssen diese, wie beschrieben, vorzugsweise miteinander verschraubt werden. Um dieses Verschrauben zu erleichtern, ist an zumindest einem Teil eine Nutmutter zur Aufnahme eines Hakenschlüssels angeordnet, wobei mittels der Nutmutter das erste Teil mit dem zweiten Teil verschraubbar ist.To secure the insulating sleeve or the parts with each other, they must, as described, preferably be screwed together. In order to facilitate this screwing, a groove nut for receiving a hook key is arranged on at least one part, wherein by means of the groove nut, the first part with the second part is screwed.
Nachfolgend wird der Gegenstand anhand einer Ausführungsbeispiele zeigenden Zeichnung näher erläutert. In der Zeichnung zeigen:
- Fig. 1
- eine Seitenansicht eines gegenständlichen Verbindungssystems;
- Fig. 2
- eine Ansicht einer Aufnahme und eines Vorsprungs;
- Fig. 3
- eine weitere Seitenansicht eines gegenständlichen Verbindungssystems;
- Fig. 4
- eine Schnittansicht durch ein Verbindungssystem gemäß
Figur 3 ; - Fig. 5
- eine Seitenansicht eines weiteren Verbindungssystems;
- Fig. 6
- eine Schnittansicht durch ein Verbindungssystem gemäß
Figur 5 ; - Fig. 7
- eine Seitenansicht eines gegenständlichen Verbindungssystems mit Isolationshülse und Schrumpfschlauch;
- Fig. 8
- eine Schnittansicht einer ersten Ausgestaltung aus Aufnahme und Vorsprung;
- Fig. 9
- eine Schnittansicht einer weiteren Ausgestaltung von Vorsprung und Aufnahme;
- Fig. 10
- eine Schnittansicht einer weiteren Ausgestaltung von Vorsprung und Aufnahme.
- Fig. 1
- a side view of an objective connection system;
- Fig. 2
- a view of a receptacle and a projection;
- Fig. 3
- another side view of an objective connection system;
- Fig. 4
- a sectional view through a connection system according to
FIG. 3 ; - Fig. 5
- a side view of another connection system;
- Fig. 6
- a sectional view through a connection system according to
FIG. 5 ; - Fig. 7
- a side view of an objective connection system with insulation sleeve and shrink tube;
- Fig. 8
- a sectional view of a first embodiment of receptacle and projection;
- Fig. 9
- a sectional view of another embodiment of the projection and recording;
- Fig. 10
- a sectional view of another embodiment of the projection and recording.
Wie in der
Ausgehend von den Verbindungsflächen 4a, 6a erstrecken sich die Verbindungsstücke 4, 6 in eine Aufnahme 16 bzw. einen Vorsprung 18.Starting from the connecting
Ferner ist zu erkennen, dass der Vorsprung 18 in der Aufnahme 16 angeordnet ist. Eine leitende Verbindung zwischen den Kabeln 8, 10 bzw. den Litzen der Kabel 8, 10 ist über die Verbindungsstücke 4, 6 bzw. die Berührflächen zwischen Vorsprung 18 und Aufnahme 16 gewährleistet.Furthermore, it can be seen that the
Die Litzen der Kabel 8, 10 sind in einem jeweils abisolierten Bereich 8b, 10b des Kabels 8, 10 freigelegt. Im Bereich des stirnseitigen Endes des Kabels ist über die Litzen eine Stützhülse 20, 22 geschoben. Die Stützhülse 20, 22 verpresst die Litzen der Kabel 8, 10 derart, dass diese stoffschlüssig mittels eines Stumpfschweißverfahrens mit den Verbindungsstücken 4, 6 verschweißt werden können. Hierzu eignen sich insbesondere Reibschweißverfahren. Insbesondere ein Rotationsreibschweißen oder ein Ultraschallschweißen eignet sich zum Verbinden zwischen Verbindungsstück 4, 6 und Kabel 8, 10. Auch sind Widerstandsschweißverfahren möglich.The strands of the
Wie in der
Die Aufnahme 16 des Verbindungsstücks 6 erstreckt sich ausgehend von der Verbindungsfläche 4a und hat einen v-förmigen Querschnitt. Die Aufnahme 16 ist als Nut gebildet, wohingegen der Vorsprung 18 als Steg gebildet ist. Ein Verschieben längs der Längsachsen 12, 14 ermöglicht das Ineinanderschieben von Vorsprung 18 in die Nut 16. Die Mantelflächen von Vorsprung 18 und Nut 16 liegen aneinander, so dass ein geringer Übergangswiderstand realisiert ist.The
Die Verbindungsstücke 4, 6 sind vorzugweise aus Aluminium gebildet. Hierbei können die Verbindungsstücke 4, 6 unternickelt und verzinnt sein.The connecting
Eine Fixierung der Verbindungsstücke 4, 6 zueinander, insbesondere das Verhindern einer Bewegung der Verbindungsstücke 4, 6 parallel zu den Längsachen 14, 12 kann durch ein Sicherungselement realisiert sein. Ein solches ist in der
In der
Durch die Schraube 24 ist ein Verdrehen der Verbindungsstücke 4, 6 zueinander verhindert. Auch wird verhindert, dass die Verbindungsstücke 4, 6 parallel zur Längsachse 12, 14 verschoben werden.By the
Die Schraube 24 wird entweder mit einem Drehmomentschlüssel angezogen, so dass verhindert wird, dass sich das Gewinde 28, 32 abschert, oder mit einem Abreißkopf versehen. Der Abreißkopf verhindert, dass die Schraube 24 mit einem zu großem Drehmoment verschraubt wird. Insbesondere bei der Verwendung von Aluminium für die Verbindungsstücke 4, 6 muss darauf geachtet werden, dass die Gewinde 28, 32 beim Verschrauben mit der Schraube 24 nicht abgeschert werden. Auch muss eine definierte Anpresskraft von Vorsprung 18 in Aufnahme 18 gewährleistet sein, um einen definierten Übergangswiderstand zu ermöglichen.The
Zusätzlich zu der
Um zu verhindern, dass Feuchtigkeit in den Bereich der Flansche 38 eindringt, ist jeweils ein Schrumpfschlauch 40 über die jeweilige Kabelisolierung 8a, 10a und die Isolationshülse 34 geschoben und aufgeschrumpft.In order to prevent moisture from penetrating into the area of the
Mit Hilfe des gezeigten Verbindungssystems ist insbesondere möglich, Erdkabel unter Umgehung von Erdbewegungen zu verlegen. Insbesondere ist es nicht notwendig, für die Verbindung der Kabel Gräben zu graben und anschließend eine manuelle Verbindung vorzunehmen. Vielmehr ist es möglich, die Kabel im Vorfeld miteinander zu verbinden und dann in Schächten zu verschieben oder unmittelbar durch das Erdreich zu treiben.With the help of the connection system shown is in particular possible to lay underground cables, bypassing earth movements. In particular, it is not necessary to dig trenches for the connection of the cables and then make a manual connection. Rather, it is possible to connect the cables in advance with each other and then move into shafts or to drive directly through the soil.
Claims (15)
- Electrical connection system, in particular of an underground cable, with- a first connecting piece (4) which can be connected to an end of a first cable (8), wherein a longitudinal axis of the first cable (8) determines a first longitudinal axis, and- a second connecting piece (6) which can be connected to an end of a second cable (10), wherein a longitudinal axis of the second cable (10) determines a second longitudinal axis,- wherein the first connecting piece (4( has a seat (16) formed for a protrusion (18) of the second connecting piece (6), and the second connecting piece (6) has a protrusion (18) corresponding to the seat (16), and- wherein the seat (16) extends parallel to the first longitudinal axis,- the protrusion (18) extends parallel to the second longitudinal axis, and- the protrusion (18) is slidably arranged in the seat (16) parallel to the first longitudinal axis, and- wherein the protrusion can be arranged in the seat to form an electrically conductive connection between the connecting pieces,
characterised in that- the protrusion (18) is a web and the seat (16) is a nut forming electrical contact faces to each other being bigger than a cross-sectional area of one of the cables, and a conductive connection between the cables (8, 10) is formed by contact areas between protrusion (18) and seat (16). - Electrical connection system according to any one of the preceding claims, characterised in that the cross-section of the protrusion (18) is substantially congruent to the cross-section of the nut.
- Electrical connection system according to any one of the preceding claims, characterised in that the nut is V-shaped or U-shaped or C-shaped.
- Electrical connection system according to any one of the preceding claims, characterised in that the cross-section of the second connecting piece (6) is T-shaped or L-shaped.
- Electrical connection system according to any one of the preceding claims, characterised in that in connected state, the protrusion (18) is fixed in the nut by a securing element (26).
- Electrical connection system according to any one of the preceding claims, characterised in that the securing element (24) penetrates a nut base and is fixed to the protrusion (18), or the securing element (14) goes through the protrusion (18) and is fixed to the nut base.
- Electrical connection system according to any one of the preceding claims, characterised in that the securing element (24) is a screw, in particular a break-off screw or a screw fastened with a defined torque.
- Electrical connection system according to any one of the preceding claims, characterised in that the length of the nut is selected depending on the ampacity of the connection.
- Electrical connection system according to any one of the preceding claims, characterised in that at least one connecting piece (4, 6) has a joint face and the joint face can be connected to the cable by material fit.
- Electrical connection system according to any one of the preceding claims, characterised in that a cable end is stripped, a connecting sleeve (20, 22) is arranged over the stripped cable end, the connecting sleeve (20, 22) compresses the cable (8, 10) in the region of the stripped end, and a joint face is connected to the face end of the cable (8, 10) by material bonding.
- Electrical connection system according to claim 10, characterised in that the joint face has a diameter which is smaller than or equal to the cable diameter.
- Electrical connection system according to any one of claims 10 or 11, characterised in that the connecting sleeve (20, 22) is shorter than the stripped end of the cable (8, 10) and is arranged on the stripped end of the cable (8, 10) at a distance from the cable insulation.
- Electrical connection system according to any one of the preceding claims, characterised in that the connecting pieces (4, 6) are made of aluminium or alloys thereof, and/or that the connecting sleeve (20, 22) is made of aluminium, copper or alloys thereof, and/or that the cables are made of aluminium, copper or alloys thereof.
- Electrical connection system according to any one of the preceding claims, characterised in that the connecting pieces (4, 6) and/or the connecting sleeves (20, 22) are metal-coated, in particular subplated in nickel and/or tin-plated.
- Electrical connection system according to any one of the preceding claims, characterised in that the connecting pieces (4, 6) are surrounded by an insulating housing, and/or that the insulating housing is arranged on flanges of the connecting pieces facing the respective cables (8, 10) or on the connecting sleeve (20, 22), in particular in the region between the connecting sleeve (20, 22) and the cable insulation, such that the tensile forces acting in the direction of the longitudinal axis can be absorbed by the housing.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102012010279A DE102012010279A1 (en) | 2012-05-25 | 2012-05-25 | ELECTRICAL CONNECTION SYSTEM |
PCT/EP2013/058008 WO2013174582A1 (en) | 2012-05-25 | 2013-04-17 | Electric connection system |
Publications (2)
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EP2856562A1 EP2856562A1 (en) | 2015-04-08 |
EP2856562B1 true EP2856562B1 (en) | 2016-03-09 |
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EP13718549.2A Not-in-force EP2856562B1 (en) | 2012-05-25 | 2013-04-17 | Electric connection system |
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US (1) | US9203166B2 (en) |
EP (1) | EP2856562B1 (en) |
CN (1) | CN104396089B (en) |
DE (1) | DE102012010279A1 (en) |
WO (1) | WO2013174582A1 (en) |
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US9887477B1 (en) * | 2016-09-22 | 2018-02-06 | Ford Global Technologies, Llc | Fused-wire cable connectors for a busbar |
CN107732499A (en) * | 2017-09-28 | 2018-02-23 | 深圳供电局有限公司 | Step right-angle fixed high-voltage large-current wiring terminal |
CN107946797A (en) * | 2017-09-28 | 2018-04-20 | 深圳供电局有限公司 | Cross-slot right-angle fixed high-voltage large-current wiring terminal |
DE102018107312B3 (en) | 2018-03-27 | 2019-09-05 | Nordex Energy Gmbh | Positioning device for cables in a tower section of a wind turbine and method for inserting cables into a tower section with such a positioning device |
JP7282469B2 (en) * | 2020-01-17 | 2023-05-29 | イーグル工業株式会社 | rotating connector |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH66587A (en) * | 1913-09-13 | 1914-09-16 | Carl Ehrismann | Coupling for wires |
GB175887A (en) * | 1921-02-01 | 1922-03-02 | Gilbert Andrew | New or improved means or apparatus for coupling electric cables and the like |
US4080024A (en) * | 1977-05-12 | 1978-03-21 | Harco Corporation | Underground cable connection |
US7828573B2 (en) | 2008-10-28 | 2010-11-09 | S&N Pump Company | Subsea electrical connector and method |
CN201887217U (en) * | 2010-07-19 | 2011-06-29 | 富士康(昆山)电脑接插件有限公司 | Conductive terminal |
-
2012
- 2012-05-25 DE DE102012010279A patent/DE102012010279A1/en not_active Ceased
-
2013
- 2013-04-17 WO PCT/EP2013/058008 patent/WO2013174582A1/en active Application Filing
- 2013-04-17 US US14/403,383 patent/US9203166B2/en not_active Expired - Fee Related
- 2013-04-17 CN CN201380027429.3A patent/CN104396089B/en not_active Expired - Fee Related
- 2013-04-17 EP EP13718549.2A patent/EP2856562B1/en not_active Not-in-force
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3340390A1 (en) | 2016-12-21 | 2018-06-27 | Nordex Energy GmbH | Cable connector for high current |
Also Published As
Publication number | Publication date |
---|---|
US9203166B2 (en) | 2015-12-01 |
EP2856562A1 (en) | 2015-04-08 |
WO2013174582A1 (en) | 2013-11-28 |
US20150171525A1 (en) | 2015-06-18 |
DE102012010279A1 (en) | 2013-11-28 |
CN104396089A (en) | 2015-03-04 |
CN104396089B (en) | 2017-07-18 |
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