EP4390996A1 - Disconnect terminal assembly - Google Patents

Abstract

A disconnect terminal arrangement (1) comprises at least two disconnect terminals (2, 3) which are arranged in a row along a row direction (A) and each have at least one first electrical connection (200, 300), at least one second electrical connection (201, 301) and a switching device (21, 31). A coupling device serves to mechanically couple the switching devices (21, 31) of the at least two disconnect terminals (2, 3) in order to actuate the switching devices (21, 31) together. The coupling device comprises a first coupling element (22) which is assigned to the switching device (21, 31) of a first of the at least two isolating terminals (2, 3), a second coupling element (32) which is assigned to the switching device (21, 31) of at least a second of the at least two isolating terminals (2, 3), and a connecting member (4), wherein the connecting member (4) is adjustable along the alignment direction (A) relative to the first coupling element (22) and the second coupling element (32) between a coupling position and a release position.

Description

The invention relates to a disconnect terminal arrangement according to the preamble of claim 1.

Such a disconnect terminal arrangement comprises at least two disconnect terminals which are arranged in a row along a row direction and each have at least one first electrical connection, at least one second electrical connection and a switching device. The switching device of each of the at least two disconnect terminals can be switched between a first switching position in which the at least one first electrical connection and the at least one second electrical connection of the respectively assigned disconnect terminal are electrically connected to one another, and a second switching position in which the at least one first electrical connection and the at least one second electrical connection are electrically separated from one another.

In such a disconnect terminal arrangement, it is normally sufficient to switch the switching devices of the combined disconnect terminals together, for example switching devices of a pair of disconnect terminals arranged next to one another. For this purpose, the disconnect terminal arrangement has a coupling device which is designed to mechanically couple the switching devices of the at least two disconnect terminals to one another in order to enable the switching devices to be operated together.

An arrangement of isolating terminals of the type in question here is used, for example, in combination with so-called measuring transformers. Measuring transformers are usually used to convert an incoming electrical quantity such as current or electrical voltage into a proportional, different output quantity. In this case, large voltages or currents are usually reduced (proportionally) in order to enable a measurement in an electrical system using a commercially available measuring device. So-called measuring transformer isolating terminals enable a measuring transformer system to be set up in a professional and standard-compliant manner, for example for use in the energy sector, by establishing a connection to measuring transformers and then to one or more measuring devices via an arrangement of isolating terminals.

While it is normally sufficient to switch switching devices of combined isolating terminals together, in individual cases it may be necessary to switch a switching device of an individual isolating terminal on its own and independently of the switching device of another isolating terminal. Common coupling devices use, for example, a connector that is plugged into the switching levers of switching devices and is firmly connected to the switching levers when plugged in. Such a connector cannot be easily removed from the switching levers and must be dismantled in a relatively complex manner in order to enable switching of an individual switching device.

From the EP 3 796 354 A2 A coupling device is known which can be adjusted between a first coupling position and a second coupling position. In the first coupling position, shift levers from adjacent separating terminals are coupled to one another. In the second coupling position, however, the shift levers are separated from one another so that the shift levers can be switched independently of one another.

The object of the present invention is to provide a disconnect terminal arrangement which enables switching devices of at least two disconnect terminals to be coupled to one another in a simple manner which is convenient for a user to handle, but also to be separated from one another if necessary.

This object is solved by an article having the features of claim 1.

Accordingly, the coupling device has a first coupling element that is assigned to the switching device of a first of the at least two isolating terminals, a second coupling element that is assigned to the switching device of at least a second of the at least two isolating terminals, and a connecting member. The connecting member is adjustable along the alignment direction relative to the first coupling element and the second coupling element in order to couple the first coupling element and the second coupling element to one another in a coupling position for jointly actuating the switching devices of the at least two isolating terminals and not to couple the first coupling element and the second coupling element to one another in a release position for separately actuating the switching devices of the at least two isolating terminals.

The coupling device serves to couple the switching devices of at least two isolating terminals that are arranged in a row along a row direction. In a coupling position, the coupling device provides a mechanical Coupling between the switching devices, for example between the switching levers of the switching devices, so that the switching devices can be switched together via the coupling device. The coupling device can, however, be adjusted to a release position in which the switching devices are not coupled to one another and can therefore be switched independently of one another.

The coupling is established via a connecting link that is adjustable relative to coupling elements. A first coupling element is assigned to the switching device of a first of the isolating terminals. A second coupling element is assigned to at least a second of the isolating terminals. In the coupling position, the connecting link establishes a connection between the coupling elements so that the switching devices can only be switched together. In the release position, however, the coupling elements are separated from one another so that the switching devices can be switched independently of one another.

The connecting link is adjustable along the alignment direction relative to the first coupling element and the second coupling element and can thus be moved between the coupling position and the release position. This results in a simple, space-saving design in which the connecting link can be adjusted linearly along the alignment direction relative to the coupling elements in order to optionally establish or release the coupling between the coupling elements.

In one embodiment, the switching devices of the at least two isolating terminals can each be pivoted about a pivot axis common to the switching devices relative to a housing of the respective isolating terminal for switching between the first switching position and the second switching position. The switching devices can be designed, for example, as switching levers or as so-called isolating blades. In the first switching position, the switching devices establish a connection between first connections and second connections of the respective isolating terminals. In the second switching position, however, the first connections and the second connections are electrically separated from one another.

In one embodiment, the pivot axis can be directed in particular along the alignment direction.

In another embodiment, each switching device can be moved linearly relative to a housing of the respective associated isolating terminal. The switching devices can thus be adjusted linearly for switching.

In one embodiment, the first coupling element is firmly or detachably connected to the switching device of the first of the at least two isolating terminals. Additionally or alternatively, the second coupling element can also be firmly or detachably connected to the switching device of the at least one second of the at least two isolating terminals. The first coupling element can, for example, be designed integrally with the switching device, for example a switching lever, of the first isolating terminal. The second coupling element can also be designed integrally with the switching device, for example a switching lever, of the at least one second isolating terminal. Alternatively, the first coupling element can, for example, be plugged into the switching device of the first isolating terminal, with the first coupling element being, for example, releasably locked to the associated switching device in the plugged-in position. The second coupling element can also, for example, be plugged into the switching device of the at least one second isolating terminal, with the second coupling element being, for example, releasably locked to the associated switching device in the plugged-in position.

In one embodiment, the connecting link has an adjusting body that is accommodated in a guide opening of one of the first coupling elements and the second coupling element so that it can be adjusted along the alignment direction. In the guide opening, the adjusting body of the connecting link can be moved along the alignment direction in order to move the connecting link between the coupling position and the release position. In the coupling position, the adjusting body protrudes from the guide opening, for example, and thus establishes a coupling with the other coupling element. In the release position, on the other hand, the adjusting body is pushed into the guide opening, for example, so that the coupling between the coupling elements is canceled.

The adjusting body of the connecting link can be formed, for example, by a cylindrical bolt body that is guided in the guide opening so that it can be moved linearly along the alignment direction. The bolt body can be used to adjust the connecting link in the guide opening so that the connecting link can be moved between the coupling position and the release position.

However, the bolt body can also have any other shape. For example, the bolt body can have a cuboid shape.

In one embodiment, the connecting link has a locking element that blocks the connecting link from moving out of the guide opening beyond the coupling position. The connecting link is thus held securely on the associated coupling element in that the locking element, for example, comes into contact with a locking section on an edge of the guide opening when the connecting link is moved into the coupling position. The connecting link cannot therefore be moved relative to the guide opening beyond the coupling position, in particular cannot be pushed out of the guide opening, so that the connecting link is prevented from sliding out of the guide opening.

The locking element can, for example, protrude from the adjustment body transversely to the alignment direction. An associated locking section in the area of the guide opening can, for example, be formed by a web that projects radially inwards and against which the locking element rests in the coupling position.

In one embodiment, the connecting member engages in an engagement opening of the other of the first coupling element and the second coupling element in the coupling position. The connecting member received in the guide opening of a coupling element thus engages in the engagement opening of the other coupling element in the coupling position, for example with the adjustment body, and thus creates a positive coupling between the coupling elements. If the switching devices can be pivoted for switching, for example about a pivot axis directed along the row direction, the connecting member extends in the coupling position transversely to a pivot plane along which the switching devices can be moved for switching, between the coupling elements, so that the coupling elements are mechanically reliably coupled to one another and can only be switched together. In the release position, however, the connecting link does not engage in the engagement opening of the other coupling element, so that the mechanical coupling between the coupling elements is canceled and the coupling elements and, above them, the switching devices can be operated independently of one another.

The connecting link can, for example, engage with the adjustment body in the engagement opening. Additionally or alternatively, the adjustment body of the connecting link can an engagement portion, for example with a conical shape, which engages in an associated engagement opening on the other coupling element.

In one embodiment, the connecting member has a locking element for locking in the engagement opening. The locking element can be formed, for example, as a locking lug on the adjustment body or on an engagement section formed on the adjustment body and, in the coupling position, can engage behind an edge section that delimits the engagement opening, so that a locking connection is established above it and the connecting member is thus locked in the coupling position along the alignment direction. The locking connection can be releasable so that when a sufficiently large force is applied, the coupling element can be released from the coupling position and the coupling between the coupling elements and, as a result, between the switching devices can be canceled.

In one embodiment, the connecting link in the coupling position is rotatable about an axis of rotation pointing along the alignment direction to the first coupling element and the second coupling element between a first rotation position and a second rotation position. The connecting link can thus be moved along the alignment direction between the first coupling element and the second coupling element to transfer it into the coupling position in order to establish a connection between the coupling elements in the coupling position. If the connecting link is in the coupling position, the connecting link can, for example, additionally be pivoted about the axis of rotation pointing along the alignment direction, for example in order to transfer the connecting link into a locked position in which the connecting link is locked to the coupling elements in such a way that the connecting link cannot be moved out of the coupling position along the alignment direction.

A rotating bearing for the connecting link can be created, for example, via a cylindrical bolt body which is rotatably received in the guide opening of one coupling element and also in the engagement opening of the other coupling element.

For example, the connecting link can be moved in the first rotational position along the alignment direction into the coupling position and also out of the coupling position again. The second rotational position, on the other hand, can correspond to a locked position in which the connecting link is locked in such a way that the Connecting link cannot be moved along the alignment direction out of the coupling position, at least not without rotating the connecting link back to the first rotational position.

For example, in the second rotational position, the connecting link is positively locked with respect to the alignment direction. In the second rotational position, there is thus a positive connection between the connecting link and at least one of the coupling elements, which prevents the connecting link from being able to be moved along the alignment direction relative to the coupling elements, so that the connecting link is locked in the coupling position.

In one embodiment, at least one of the first coupling element and the second coupling element has a locking element. The connecting member, in contrast, has a locking section which is in engagement with the locking element in the second rotational position. The locking element can, for example, be shaped as a projection. In contrast, an opening can, for example, be formed on the locking section which is in engagement with the locking element in the second rotational position, so that a positive hold of the connecting member in the second rotational position and thus in the coupling position is established.

In one embodiment, the connecting member has a first locking device. The second coupling element, in contrast, has a second locking device. In the release position, the connecting member is locked to the second locking device via the first locking device, so that the connecting member is held in the release position. The first locking device and the second locking device can interact in a locking manner, for example, such that the connecting member is locked in the first rotational position relative to the second coupling element with respect to a circumferential direction pointing around the axis of rotation.

One of the locking devices can be formed, for example, by a protruding locking web extending longitudinally along the alignment direction. The other locking device, on the other hand, can be formed, for example, by a locking groove extending longitudinally along the alignment direction. In the locked position, the locking devices preferably engage with one another in a force-fitting manner.

In one embodiment, the second coupling element additionally has a third locking device. The connecting member is secured in the Coupling position is locked with the third locking device of the second coupling element. In particular, the connecting member can be locked in the second rotational position by engagement of the first locking device in the third locking device relative to the second coupling element. The first locking device and the third locking device interact in a locking manner, for example, such that the connecting member is locked in the second rotational position relative to the second coupling element with respect to a circumferential direction pointing around the axis of rotation.

In one embodiment, the connecting link has a handle section for operation by a user. The handle section can, for example, protrude transversely (radially) to the alignment direction from the adjustment body and allows a user to grasp it. Adjustment forces can thus be introduced into the connecting link via the handle section in order to move the connecting link between the release position and the coupling position and, if necessary, also to rotate the connecting link in the coupling position.

In one embodiment, the handle section has an (additional) engagement section for engaging in an associated engagement opening of one of the coupling elements in the coupling position. The connecting link is guided on one of the coupling elements, for example. In the coupling position, the engagement section engages with an engagement opening on the other of the coupling elements, so that a coupling between the coupling elements is established via the engagement section on the handle section. In the release position, however, the engagement section is disengaged from the engagement opening, so that the coupling elements can be adjusted independently of one another.

In one embodiment, a coupling between exactly two adjacent isolating terminals can be established via the coupling device. In this case, each coupling element of a switching device is assigned to one of the isolating terminals.

In another embodiment, however, a coupling between more than two adjacent isolating terminals can also be established via the coupling device. In this case, the first coupling element is assigned to a first of the isolating terminals, for example, while the second coupling element is assigned jointly to the remaining isolating terminals.

In one embodiment, the at least two isolating terminals each have a locking device for arranging the at least two isolating terminals on a mounting rail. The isolating terminals can be combined with one another on the mounting rail and lined up next to one another on the mounting rail along the arranging direction. The isolating terminals can also be combined with other electrical or electronic components on the mounting rail, for example measuring transformers, series terminals and/or through terminals.

Fig. 1

eine Ansicht eines Ausführungsbeispiels einer Trennklemmenanordnung mit zwei Trennklemmen;

Fig. 2

eine Ansicht der Trennklemmenanordnung gemäß Fig. 1, in einer anderen Schaltstellung von Schalteinrichtungen der Trennklemmen;

Fig. 3

eine Ansicht der Trennklemmenanordnung, bei getrenntem Schalten der Schalteinrichtungen;

Fig. 4

eine Explosionsansicht einer Kopplungseinrichtung zum Koppeln der Schalteinrichtungen;

Fig. 5

eine andere Explosionsansicht der Kopplungseinrichtung;

Fig. 6

eine Ansicht der Kopplungseinrichtung, in einer Kopplungsstellung;

Fig. 7

eine Ansicht eines anderen Ausführungsbeispiels einer Kopplungseinrichtung;

Fig. 8

eine Schnittansicht der Anordnung gemäß Fig. 6;

Fig. 9

eine ausschnittsweise Schnittansicht der Anordnung gemäß Fig. 7;

Fig. 10

eine Ansicht der Kopplungseinrichtung gemäß Fig. 4 bis 6, beim Entriegeln;

Fig. 11

die Kopplungseinrichtung gemäß Fig. 10, in einer entriegelten Stellung;

Fig. 12

eine Schnittansicht durch die Anordnung gemäß Fig. 11, in der entriegelten Stellung;

Fig. 13

eine gesonderte Ansicht eines Verbindungsglieds der Kopplungseinrichtung;

Fig. 14

eine andere Ansicht des Verbindungsglieds;

Fig. 15

eine frontale Ansicht der Anordnung gemäß Fig. 11;

Fig. 16

eine Schnittansicht entlang der Linie A-A gemäß Fig. 15;

Fig. 17

eine ausschnittsweise Vergrößerung der Ansicht gemäß Fig. 16;

Fig. 18

eine frontale Ansicht der Anordnung gemäß Fig. 6;

Fig. 19

eine Schnittansicht entlang der Linie B-B gemäß Fig. 18;

Fig. 20

eine ausschnittsweise Vergrößerung der Ansicht gemäß Fig. 19;

Fig. 21

eine Ansicht einer Kopplungseinrichtung, nach einem anderen Ausführungsbeispiel; und

Fig. 22

eine Explosionsansicht der Kopplungseinrichtung gemäß Fig. 21.

The idea underlying the invention will be explained in more detail below using the embodiments shown in the figures. They show:

Fig.1

a view of an embodiment of a disconnect terminal arrangement with two disconnect terminals;

Fig.2

a view of the isolating terminal arrangement according to Fig.1 , in another switching position of the switching devices of the isolating terminals;

Fig.3

a view of the isolating terminal arrangement, with separate switching of the switching devices;

Fig.4

an exploded view of a coupling device for coupling the switching devices;

Fig.5

another exploded view of the coupling device;

Fig.6

a view of the coupling device, in a coupling position;

Fig.7

a view of another embodiment of a coupling device;

Fig.8

a sectional view of the arrangement according to Fig.6 ;

Fig.9

a partial sectional view of the arrangement according to Fig.7 ;

Fig.10

a view of the coupling device according to Fig. 4 to 6 , when unlocking;

Fig. 11

the coupling device according to Fig.10 , in an unlocked position;

Fig. 12

a sectional view through the arrangement according to Fig. 11 , in the unlocked position;

Fig. 13

a separate view of a connecting member of the coupling device;

Fig. 14

another view of the connecting link;

Fig. 15

a frontal view of the arrangement according to Fig. 11 ;

Fig. 16

a sectional view along the line AA according to Fig. 15 ;

Fig. 17

a partial enlargement of the view according to Fig. 16 ;

Fig. 18

a frontal view of the arrangement according to Fig.6 ;

Fig. 19

a sectional view along the line BB according to Fig. 18 ;

Fig. 20

a partial enlargement of the view according to Fig. 19 ;

Fig. 21

a view of a coupling device according to another embodiment; and

Fig. 22

an exploded view of the coupling device according to Fig. 21 .

Fig.1 shows an embodiment of a isolating terminal arrangement 1, which in the illustrated embodiment has two isolating terminals 2, 3.

The isolating terminals 2, 3 each have a housing 20, 30 and are attached to one another along a row direction A. The isolating terminals 2, 3 can be arranged together, for example on a mounting rail 5, via locking devices 202 on the housings 20, 30 in order to fasten the isolating terminals 2, 3 to the mounting rail 5 and, if necessary, to combine them with other electrical or electronic components, for example other isolating terminals, measuring transformers, series terminals or through terminals.

Each isolating terminal 2, 3 has (at least) a first connection 200, 300 on a first side and (at least) a second connection 201, 301 on a second side. The connections 200, 300, 201, 301 can each be designed as spring-loaded connections, for example, in order to enable an electrical line to be connected to one of the connections 200, 300, 201, 301 with electrical contact to current bars enclosed in the respective housing 20, 30.

Each isolating terminal 2, 3 has a switching device 21, 31, which can be implemented, for example, by a switching lever or a so-called isolating blade. Each switching device 21, 31 can be switched along an actuating direction B between a first switching position ( Fig.2 ) and a second switch position ( Fig.1 ) in order, for example, to electrically connect the first connection 200, 300 and the second connection 201, 301 of the respective isolating terminal 2, 3 in the first switching position and to electrically isolate the first connection 200, 300 and the second connection 201, 301 in the second switching position.

Via such isolating terminals 2, 3, a switchable connection can be established, for example, to a measuring transformer, via which a current and/or voltage conversion can be carried out in order, for example, to connect a measuring device to an electrical system, for example a power supply system.

In the embodiment shown, the switching devices 21, 31 can each be pivoted about an associated pivot axis S relative to the housing 20, 30 of the associated isolating terminal 2, 3 in order to move the switching devices 21, 31 between the different switching positions. The pivot axis S is common to the isolating terminals 2, 3, so that the switching devices 21, 31 can be moved parallel to one another about the common pivot axis S, as can be seen from Fig. 1 and 2 is evident.

In conventional measuring transformer systems, it is normally sufficient to switch switching devices 21, 31 of mutually associated isolating terminals 2, 3 together. For this reason, a coupling device can be offered as an accessory for such isolating terminals 2, 3, for example, which is designed to mechanically couple the switching devices 21, 31 of adjacent isolating terminals 2, 3 to one another, so that in the coupled position the switching devices 21, 31 can be switched together as a unit, as can be seen from Fig. 1 and 2 is evident.

For example, for control measurements, it may be necessary to switch the switching device 21, 31 of a single isolating terminal 2, 3 individually, as shown in Fig.3 For this reason, the coupling device is designed such that in a coupling position a coupling is established between the switching devices 21, 31, but this coupling is canceled in a release position, so that separate switching of the switching devices 21, 31 is also possible.

In the illustrated embodiment, the coupling device has two coupling elements 22, 32, which are each connected to one of the switching devices 21, 31 and can be coupled to or decoupled from one another via a connecting member 4.

Referring now to Fig. 4 to 6 , the coupling elements 22, 32 can each be plugged into one of the switching devices 21, 31 and thus connected to the respectively assigned switching device 21, 31. Each coupling element 22, 32 has a body 220, 320 and a plug-in shaft 221, 321 formed thereon, via which the respective coupling element 22, 32 can be plugged into the assigned switching device 21, 31 and thus connected to the switching device 21, 31 in a locking manner.

In the embodiment shown, the coupling elements 22, 32 are to be attached as accessory elements to the switching devices 21, 31. It should be noted that it is also conceivable in principle to design coupling elements of the type described, for example, fixed and non-detachable, for example in one piece, with the switching devices 21, 31, for example in one piece with shift levers of the switching devices 21, 31.

In the embodiment shown, the connecting member 4 is accommodated and guided in a guide opening 322 of the coupling element 32 via an adjusting body 40 so that it can be moved along the alignment direction A. The adjusting body 40 has the shape of a cylindrical bolt body. In a release position, the adjusting body 40 is pushed into the guide opening 322 along the alignment direction A and thus does not protrude or only protrudes insignificantly from the guide opening 322 in the direction of the other coupling element 22. In a coupling position, shown in Fig.6 , the connecting member 4 is displaced out of the guide opening 322 and engages with the adjusting body 40 in an associated engagement opening 222 on the coupling element 22, as can be seen from Fig.6 in conjunction with the sectional view according to Fig.8 is evident.

A locking element 43 is formed on the adjusting body 40 and protrudes radially from the cylindrical adjusting body 40. The locking element 43 serves as a loss protection in that the locking element 43 is in one of the coupling positions according to Fig.6 and 8th corresponding position rests against an associated locking section 324 of the coupling element 32, which limits the guide opening 322 in the direction of the other coupling element 22 and thus, in cooperation with the locking element 43, prevents the connecting member 4 from sliding out of the guide opening 322 of the coupling element 32 beyond the coupling position, as can be seen in particular from Fig.8 is evident.

In the coupling position, the adjusting body 40 engages in a form-fitting manner in the engagement opening 222 of the other coupling element 22 and thus establishes a form-fitting coupling between the coupling elements 22, 32, so that the coupling elements 22, 32 and, above them, the associated switching devices 21, 31 can only be switched together. In contrast, if the connecting member 4 is retracted into the guide opening 322 in the release position, the form-fitting engagement of the connecting member 4 with the engagement opening 222 of the coupling element 22 is canceled, so that the coupling elements 22, 32 are mechanically separated from one another and the switching devices 21, 31 are thus decoupled from one another. The switching devices 21, 31 can thus be switched separately from one another, as can be seen from Fig.3 is evident.

The connecting link 4 has a handle portion 41 which projects radially to the adjusting body 40 and forms a locking portion 411. The handle portion 41 is, as can be seen from Fig.5 As can be seen, it is connected to the adjusting body 40 via a connecting web 410 and, together with the locking section 411, delimits a connecting opening 42 which serves to lock the connecting member 4 in the coupling position.

In the region of the mouth of the guide opening 322 on the one hand and the mouth of the engagement opening 222 on the other hand, each coupling element 22, 32 has a locking element 223, 323 in the form of a nose pointing along a circumferential direction, which serves to lock the connecting member 4 in the coupling position by engaging in the connection opening 42 on the connecting member 4.

The connecting member 4 is mounted so as to be rotatable about a rotation axis D relative to the coupling elements 22, 32, in that the adjusting body 40 is rotatably received in the guide opening 322 and (in the coupling position) the engagement opening 222. This allows the Connecting link 4 between a first rotational position, shown in Fig. 4 and 5 , and a second rotation position, shown in Fig.6 , relative to the coupling elements 22, 32.

In the first rotation position according to Fig. 4 and 5 the connecting member 4 can be transferred from the release position into the coupling position and thus inserted from the guide opening 322 on the coupling element 32 into the engagement opening 222 on the coupling element 22.

If the connecting link 4 is in the coupling position, the connecting link 4 can be moved from the first rotational position ( Fig. 4 and 5 ) in a locking direction V in the Fig.6 and 8th shown second rotational position. When pivoting into the second rotational position, the locking elements 223, 323 at the mouth of the guide opening 322 or the engagement opening 222 come into engagement with the connection opening 42 between the handle section 41 and the adjustment body 40, as can be seen from the sectional view according to Fig.8 is visible, so that the connecting link 4 is positively locked and cannot be moved out of the coupling position along the alignment direction A, at least not without releasing the lock.

In the second rotation position according to Fig.6 and 8th the connecting link 4 is thus locked in its axial position with the coupling elements 22, 32 and thus secured. The coupling elements 22, 32 are thus coupled to one another via the connecting link 4.

If the coupling device is to be uncoupled again, the connecting member 4 is rotated back in the direction of the first rotational position against the locking direction V about the rotation axis D and pushed along the alignment direction A back into the guide opening 322 so that the adjusting body 40 is disengaged from the engagement opening 222 and the coupling is thus canceled.

This is in Fig. 10 to 12 Thus, in order to decouple the coupling elements 22, 32 from each other, the connecting member 4 is first moved in an unlocking direction E1 opposite to the adjustment direction V about the rotation axis D from the second rotation position according to Fig.6 in the Fig.10 shown, first rotational position, so that the connecting web 410 formed between the locking section 411 and the adjusting body 40 is disengaged from the locking element 223 on the body 22 of the coupling element 22. Then the connecting member 4 can be rotated in an unlocking direction E2 pointing along the axis of rotation D, shown in Fig. 11 , axial in the guide opening 322 on the body 320 of the coupling element 32, so that the connecting member 41 with the adjusting body 40 is disengaged from the engagement opening 222 on the coupling element 22.

After the connecting member 4 has been pushed linearly out of engagement from the engagement opening 222 on the coupling element 22 in the unlocking direction E2, the connecting member 4 can be adjusted in an unlocking direction E3 rotationally about the axis of rotation D to the body 320 of the coupling element 32, so that a recess 413 on the connecting web 410, as can be seen from the separate views of the connecting member 4 according to Fig. 13 and 14 , is brought into engagement with the locking element 323 on the body 320 of the coupling element 32.

In the Fig. 11 and 12 In the release position shown, the coupling elements 22, 32 are decoupled from one another. The locking element 323 engages in the recess 413 on the connecting web 410, so that the connecting link 4 is locked to the coupling element 32 along the alignment direction A and thus cannot be moved out of the release position, at least not without being actuated to rotate about the axis of rotation D.

On the inside of the locking section 411, as can be seen from the separate views of the connecting member 4 according to Fig. 13 and 14 , a locking device 412 is formed in the form of a locking web projecting radially inwards. The locking device 412 serves to lock the connecting member 4 with respect to a circumferential direction pointing around the axis of rotation D relative to the coupling element 32 in the coupling position and in the release position.

Thus, the locking device 412 on the inside of the locking section 411 of the connecting member 4 engages in the release position in an associated locking device 325 on a lateral surface 326 on the body 320 of the coupling element 32, as can be seen from Fig. 16 and 17 is evident.

The lateral surface 326 limits the guide opening 322 to the outside.

The locking device 325 on the outer surface 326 is formed by two locking grooves extending parallel along the alignment direction A. In the release position, the connecting member 4 with the locking device 412 in the form of the locking web engages in a lower locking groove 328 of the locking device 325 on the outer surface 326 of the coupling element 32 how this is Fig. 16 and 17 is visible, so that the connecting link 4 is axially locked and rotationally locked in the release position.

If the connecting link 4 is to be adjusted to the coupling position again in order to couple the coupling elements 22, 32 to one another, the connecting link 4 is first moved against the unlocking direction E3 according to Fig. 11 on the coupling element 32, whereby the locking device 412 is brought into engagement with a second, upper locking groove 329 of the locking device 325. The locking element 323 of the coupling element 32 thus no longer engages in the recess 413 on the connecting web 410, so that the connecting member 4 can be displaced axially along the alignment direction A on the coupling element 32 and brought into engagement with the engagement opening 222 on the coupling element 222.

If the connecting member 4, after it has been inserted into the engagement opening 222 on the coupling element 22, is pivoted in the adjustment direction V and thus into the coupling position according to Fig.6 brought, the locking device 412 locks on the inside of the locking section 411 with a further locking device 226 in the form of a locking groove on the locking element 223 of the coupling element 22, so that the connecting member 4 is locked in the coupling position relative to the coupling element 22 and is thus locked in its rotational position, as shown in Fig. 19 and 20 is shown.

The locking of the locking devices 412, 325, 226 can be released by applying a sufficient force so that the connecting member 4 can be manually adjusted between the release position and the coupling position.

In the Fig. 1 to 3 The embodiment of the isolating terminal arrangement 1 shown in FIG. 1 are connected to the Fig. 4 to 6 and 8th The switching devices 21, 31 of the two adjacent isolating terminals 2, 3 can be coupled to one another using the coupling device shown.

It is also conceivable to connect more than two isolating terminals to one another via a coupling device. For this purpose, as shown in an embodiment in Fig.7 and 9 As shown, a coupling element 22 can be assigned to a single isolating terminal, for example, while a further, second coupling element 32 is assigned to several further isolating terminals. The switching device of a first isolating terminal can thus can be coupled to the switching devices of several further, second isolating terminals and can also be decoupled from these switching devices.

Otherwise, the embodiment is as per Fig.7 and 9 functionally, in particular with regard to the design of the connecting link 4 and the establishment of the coupling via the connecting link 4, identical to that described above with reference to Fig. 4 to 6 and 8th described embodiment.

In another, in Fig. 21 and 22 The embodiment shown has a coupling device for coupling switching devices 21, 31 of isolating terminals (analogous to isolating terminals 2, 3 according to Fig. 1 to 3 ) coupling elements 22, 32 and a connecting link 4.

Each coupling element 22, 32 has, analogously to what has been described above, a body 220, 320 and a plug-in shaft 221, 321 formed thereon for plugging into a respectively associated switching device 21, 31 of the isolating terminals.

In the embodiment shown, a connecting member 4 is slidably guided on the coupling element 32, which in a Fig. 21 In the release position shown, the coupling elements 22, 32 are decoupled from one another and can be displaced along the alignment direction A on the body 320 of the coupling element 32 in order to establish a coupling between the coupling elements 22, 32 in a coupling position.

As can be seen from the exploded view according to Fig. 22 As can be seen, the connecting member 4 has an adjusting body 40 which is slidably received in a guide opening 322 on the body 320 of the coupling element 32 and creates a sliding guide along the alignment direction A relative to the coupling element 32.

A handle section 41 protrudes from the adjusting body 40 transversely to the alignment direction A, which a user can grip, for example using a tool, in order to thereby adjust the connecting link 4 along the alignment direction A.

In the embodiment shown, engagement sections 400, 401 are formed on both the adjusting body 40 and the handle section 41, which in the coupling position each engage in an associated engagement opening 222, 224 on the body 220 of the coupling element 22 and thus establish a positive coupling between the coupling elements 22, 32.

The engagement portion 400 is approximately conical in shape.

On the engagement section 401, which protrudes axially from the handle section 41, locking elements 402 in the form of transversely protruding locking lugs are formed on both sides, which in the coupling position engage in a locking manner with edge sections 225, which laterally limit the engagement opening 224 on the coupling element 22. The locking elements 402 on the engagement section 401 thus block the connecting member 4 in the coupling position against movement along the alignment direction A, so that the coupling between the coupling elements 22, 32 cannot be easily released, at least not automatically.

The locking engagement of the locking elements 402 with the edge sections 425 can, for example, be designed such that the locking engagement can be released when a sufficiently large force is applied, so that the connecting member 4 can be brought back into the release position by applying force and the coupling elements 22, 32 can thus be decoupled from one another.

The idea underlying the invention is not limited to the embodiments described above, but can also be implemented in other ways.

A coupling device of the type described can be used for coupling two or more isolating terminals, wherein the coupling device in particular also enables a release of the coupling and thus a switching of switching devices of isolating terminals independently of one another.

Disconnect terminals of a disconnect terminal arrangement can be used, for example, to switchably connect measuring transformers to a higher-level electrical system, for example a power supply system, in order to enable test measurements on such a system. However, a disconnect terminal arrangement of the type described can also be used for other purposes in electrical systems.

Each isolating terminal may have one or more primary side connections and one or more secondary side connections.

The connections can be realized by spring force connections, screw connections or other types of connections.

List of reference symbols

1

Disconnect terminal arrangement

2

Disconnect terminal

20

Housing

200, 201

Connection

202

Locking device

21

Switching device (cutting knife)

22

Coupling element

220

Body

221

Socket shaft

222

Access opening

223

Locking element

224

Access opening

225

Edge section

226

Locking device

3

Disconnect terminal

30

Housing

300, 301

Connection

31

Switching device (cutting knife)

32

Coupling element

320

Body

321

Socket shaft

322

Guide opening

323

Locking element

324

web

325

Locking device

326

Shell surface

328, 329

Locking groove

4

connecting link

40

Adjustment body

400, 401

Intervention section

402

Locking element

41

Handle section

410

Connecting bridge

411

Restricted section

412

Locking device

413

Recess

42

Locking opening

43

Locking element

5

Support rail

A

Alignment direction

B

Actuation direction

D

Rotation axis

E1, E2

Unlocking direction

S

Swivel axis

V

Locking direction

Claims (17)

Disconnect terminal arrangement (1), with at least two isolating terminals (2, 3) which are arranged in a row along a row direction (A) and each have at least one first electrical connection (200, 300), at least one second electrical connection (201, 301) and a switching device (21, 31), wherein the switching device (21, 31) of each of the at least two isolating terminals (2, 3) can be switched between a first switching position in which the at least one first electrical connection (200, 300) and the at least one second electrical connection (201, 301) are electrically connected to one another, and a second switching position in which the at least one first electrical connection (200, 300) and the at least one second electrical connection (201, 301) are electrically separated from one another, and a coupling device for mechanically coupling the switching devices (21, 31) of the at least two isolating terminals (2, 3) in order to operate the switching devices (21, 31) together, characterized in that the coupling device has a first coupling element (22) which is assigned to the switching device (21, 31) of a first of the at least two isolating terminals (2, 3), a second coupling element (32) which is assigned to the switching device (21, 31) of at least a second of the at least two isolating terminals (2, 3), and a connecting member (4), wherein the connecting member (4) is adjustable along the alignment direction (A) relative to the first coupling element (22) and the second coupling element (32) in order to couple the first coupling element (22) and the second coupling element (32) to one another in a coupling position for jointly actuating the switching devices (21, 31) of the at least two isolating terminals (2, 3) and in a release position for separately actuating the first coupling element (22) and the second coupling element (32) for separately actuating the switching devices (21, 31) of the at least two isolating terminals (2, 3) are not coupled to one another. Disconnecting terminal arrangement (1) according to claim 1, characterized in that the switching devices (21, 31) of the at least two disconnecting terminals (2, 3) can each be pivoted about a pivot axis (S) common to the switching devices (21, 31) for switching between the first switching position and the second switching position. Disconnecting terminal arrangement (1) according to claim 1 or 2, characterized in that the first coupling element (22) is fixedly or detachably connected to the switching device (21, 31) of the first of the at least two isolating terminals (2, 3) and the second coupling element (32) is fixedly or detachably connected to the switching device (21, 31) of the at least one second of the at least two isolating terminals (2, 3). Disconnecting terminal arrangement (1) according to one of claims 1 to 3, characterized in that the connecting member (4) has an adjusting body (40) which is accommodated in a guide opening (322) of one of the first coupling element (22) and the second coupling element (32) so as to be adjustable along the alignment direction (A). Disconnecting terminal arrangement (1) according to claim 4, characterized in that the adjusting body (40) is formed as a cylindrical bolt body (40) which is guided in the guide opening (322). Disconnecting terminal arrangement (1) according to claim 4 or 5, characterized in that the connecting member (4) has a locking element (43) which blocks movement of the connecting member (4) out of the guide opening (322) beyond the coupling position. Disconnecting terminal arrangement (1) according to one of claims 4 to 6, characterized in that the connecting member (4) in the coupling position engages in an engagement opening (222, 224) of the other of the first coupling element (22) and the second coupling element (32) and in the release position does not engage in the engagement opening (222, 224) of the other of the first coupling element (22) and the second coupling element (32). Disconnect terminal arrangement (1) according to claim 7, characterized in that the connecting member (4) has a locking element (402) for locking in the engagement opening (222, 224) in order to block a movement of the connecting member (4) along the alignment direction (4) out of the engagement opening (222, 224). Disconnect terminal arrangement (1) according to one of the preceding claims, characterized in that the connecting member (4) in the coupling position is rotatable about an axis of rotation (D) pointing along the alignment direction (A) to the first coupling element (22) and the second coupling element (32) between a first rotational position and a second rotational position. Disconnect terminal arrangement (1) according to claim 9, characterized in that the connecting member (4) is movable out of the coupling position along the alignment direction (A) in the first rotational position and is locked in the second rotational position such that the connecting member (4) is not movable out of the coupling position along the alignment direction (A). Disconnect terminal arrangement (1) according to claim 9 or 10, characterized in that the connecting member (4) is positively locked in the second rotational position with respect to the alignment direction (A). Disconnect terminal arrangement (1) according to one of claims 9 to 11, characterized in that at least one of the first coupling element (22) and the second coupling element (32) has a locking element (223, 323), wherein the connecting member (4) has a locking portion (411) which is in engagement with the locking element (223, 323) in the second rotational position. Disconnecting terminal arrangement (1) according to one of the preceding claims, characterized in that the connecting member (4) has a first latching device (412) which, in the release position, is latched to a second latching device (325) of the second coupling element (32). Disconnect terminal arrangement (1) according to one of the preceding claims, characterized in that the connecting member (4) is locked via the first locking device (412) in the coupling position with a third locking device (226) of the first coupling element (22) and/or the second coupling element (32). Disconnect terminal arrangement (1) according to one of the preceding claims, characterized in that the connecting member (4) has a handle portion (41) for actuation by a user. Disconnect terminal arrangement (1) according to claim 15, characterized in that the handle portion (41) has an engagement portion (401) for engaging in an associated engagement opening (224) of one of the first coupling element (22) and the second coupling element (32) in the coupling position. Disconnecting terminal arrangement (1) according to one of the preceding claims, characterized in that the at least two disconnecting terminals (2, 3) each have a Locking device (202) for arranging the at least two isolating terminals (2, 3) on a support rail (5).

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