EP1903591A1 - Load break switch with flexible cable outlet - Google Patents

Abstract

The load disconnecting protection switch has a cable outlet on one side, and a lower part (20), on which hooks (21) are arranged aligned in a direction for partially surrounding the bus bars. The lower part and an upper part (10) are so arranged that the lower part is locked on the hooks in multiple different positions in relation to the upper part. The locking of the lower part on the upper part takes place by sliding of hook-shaped clamping element (22) fixed on the lower part on the holding devices integrated in the upper part.

Description

The invention relates to a fuse switch disconnectors for busbar contact with an upper part, which has at least one cable outlet on one side and with a lower part, are arranged on the firmly oriented in one direction hooks for partially enclosing busbars, wherein the lower part and the upper part configured in that the lower part can be locked in relation to the upper part in several different positions on this.

Fuse switch disconnectors are usually suspended or plugged into switchgear, for example in control cabinets, on busbars. By arranging a plurality of fuse switch disconnectors in a switchgear, there is often the need for optimal space utilization. Each of the fuse switch disconnectors has a cable outlet attached to one side of its housing. This cable outlet comprises a cable or a conductor through which the current flow removed from the busbar is conducted.

Conventional fuse switch disconnectors consist of a designated as an adapter or floor pan base, on which hooks are arranged to hang on busbars, and an upper part, in which the switching contacts are arranged. For actuation of the switch contacts, a handle insert for actuation of the fuse switch-disconnector is furthermore arranged pivotably mounted on the upper part.

Due to the cramped installation conditions in switchgear, there may be a requirement that a fuse switch disconnector offers the possibility to flexibly arrange the cable outlet. For example, the arrangement of a fuse switch-disconnector Above a close to him arranged device only possible if the cable outlet of the fuse load disconnector is also aligned upward and thus does not overlap with the position of the arranged under the fuse switch disconnector device.

It is from the document EP 1 271 727 A1 an electrical installation device known at the lower part of individual hook-shaped terminals are rotatably arranged. On one side of the lower part of the cable outlet is also arranged. In a position of use of the electrical installation device, the cable outlet points down. In a desired use position of the electrical installation device, in which the cable outlet is to point upwards, the lower part must be rotated by 180 °. After rotation of each hook-shaped clamp on the lower part also by 180 °, the electrical installation device can be hung on busbars again. The switch cover for operating the switching device can also be rotated by 180 ° again arranged on the lower part. The disadvantage of this embodiment is that the rotation of a plurality of components must be performed. This increases the workload and the assembly time and also involves the risk that the rotation of a hook-shaped clamp is forgotten.

If not all hook-shaped clamps have been rotated by the same angle, the electrical installation device can no longer be mounted on the busbars. In this case, a time-consuming correction of the position of the hook-shaped terminals must be performed.

In the utility model DE 297 21 440 U1 discloses a switch-disconnector, in which a lower part can be screwed in several different positions with an upper part. The upper part also in this device comprises the switching contacts and the switching handle arranged on it, and the lower part comprises the hook-shaped terminals to be suspended on the busbars. The cable outlet is in this Embodiment arranged on the upper part. In order to move the cable outlet to another position, the lower part must be unscrewed from the upper part, swiveled by 180 ° and screwed back in this position to the upper part. After carrying out this conversion, the load-break switch modified in this way can be rotated by 180 ° itself and hung on busbars.

The execution of the screw is relatively complicated and time consuming. Furthermore, the individual screw elements are individual components that can be lost to the fitter during disassembly and assembly.

A modified embodiment to that in the utility model DE 297 21 440 U1 is in the utility model DE 298 22 620 U1 discloses, in which the lower part is screwed on the one hand to the upper part and on the other hand connected with a plug-screw connection to the upper part. This embodiment offers the advantage of a quickly produced connection between the upper and lower part by the mating of the plug-in components. However, again, many individual components are used here, which can be lost in particular during disassembly and assembly.

The invention is therefore an object of the invention to provide a fuse switch disconnector available, which can be adjusted in terms of the arrangement of its cable outlet to cramped installation situations with a low conversion costs.

This object is achieved by the features mentioned in claim 1. Advantageous embodiments are specified in the subclaims.

There is provided a fuse switch disconnector for busbar contact comprising a top having at least one cable outlet on one side and further comprising a base to which fixed unidirectional hooks for partially enclosing bus bars are arranged. The upper part and the lower part are designed such that the lower part in relation to the upper part in several different positions can be locked thereto. The locking of the lower part of the upper part takes place by means of pushing on the lower part attached hook-shaped clamping elements on the upper part integrated holding devices.

The hooks on the lower part for attachment to the busbars are fixedly arranged on the lower part, that is, they are non-rotatably mounted on the lower part. In one embodiment of the fuse switch-disconnector, in which the lower part abuts substantially flat in a plane on the upper part, the hooks are arranged on the lower part such that the direction of its opening is aligned substantially parallel to the contact surface of the lower part of the upper part.

By locking the lower part of the upper part only by pushing the hook-shaped clamping elements on the integrated in the upper holding means, the lower part can be easily attached to the upper part. This arrangement of the lower part of the upper part can be done within a very short time and requires no further individual components lost.

The individual positions in which the lower part is attachable to the upper part are advantageously those in which the hooks of the lower part point in the direction of the arrangement of the cable outlet or in reverse orientation the position in which the hooks of the lower part in the opposite direction to Position the cable outlet. This means that the lower part can be locked in each case by 180 ° twisted positions on the upper part. The side with which the lower part rests against the upper part, however, remains the same in each fastening position.

In one embodiment of the fuse switch disconnector according to the invention it is provided that the sliding of the hook-shaped clamping elements on the holding devices in the direction opposite to the opening direction of the hook, which serve to partially enclose the busbar, takes place. In order to enable this pushing in a sideways movement, the upper part next to a respective holding device on a recess into each of which a hook can be inserted before it is pushed laterally onto the holding device. The arranged on the lower part hooks for partially enclosing the busbar and also arranged on the lower part hook-shaped clamping elements are aligned opposite to their opening direction. By this opposite orientation cause the hook or the hook-shaped clamping elements in the pushed state on the busbar and in the pushed state on the holding devices a moment which acts on the busbar or on the holding device such that it is the lower part with the accurately inserted into the hooks busbars stuck.

In an advantageous manner, it can be provided that the locking of the lower part takes place on the upper part in a form-fitting manner. This positive locking can for example take place in that the hook-shaped clamping elements on the lower part and the holding devices on the upper part have such form elements that they hold themselves in the deferred state to each other.

Particularly advantageously, the positive connection takes place in that latching elements are arranged on the hook-shaped clamping elements and on the holding devices, which allow each latching of a hook-shaped clamping element on a holding device. Such locking elements may for example be a pin cooperating with a hole, wherein each pin or hole may be arranged on the hook-shaped clamping element or on the holding device. The latching device causes a latching of the hook-shaped Clamping element in its intended position on the holding device, so that the hook-shaped clamping element does not detach from the holding device when using the fuse switch-disconnector.

In an advantageous embodiment of the fuse switch-disconnector is provided that the holding devices are spring holders. Such a spring holder is a holder whose extent can be reduced elastically in one direction against a spring force. When pushing a fastened to the lower part hook-shaped clamping element on such a spring holder, this presses together and thus presses in the deferred state of the hook-shaped clamping element against a plant leg of this hook-shaped clamping element. This embodiment advantageously ensures the securing of a sufficient electrical contact between the hook-shaped clamping element and the holder.

It is thus provided by this embodiment, that the locking of the lower part in the upper part can be done positively and non-positively. The frictional connection of the lower part with the upper part takes place by acting on a leg of the hook-shaped clamping element spring force of the spring holder. In addition to this non-positive connection, however, the above-described positive connection between hook-shaped clamping element and holding device, such as by means of latching devices, can also be realized.

In an advantageous embodiment, it is provided that a limb of the hook-shaped clamping element, preferably the limb against which the spring holder rests, has a bevel or a rounded region for facilitating the sliding onto the holding device. This bevel or this rounded portion on the leg of the hook-shaped clamping element advantageously causes a reduction in the frictional force when sliding the hook-shaped Clamping elements on the holding device and a self-centering in this process.

In a particularly preferred embodiment it is provided that the hook-shaped clamping elements are formed integrally with the hooks for partially enclosing the busbars. This means that a hook-shaped clamping element and a hook for partially embracing the bus bars is designed as a respective component. For example, a sheet metal part on one side comprises the hook-shaped clamping element for sliding onto the holding device in the upper part and on the other side the hook for partially enclosing the busbars. The openings of the two hook areas preferably show, as described above, in opposite directions. By this one-piece design of the hook-shaped clamping elements and the hook results in a simple attachment possibility of these hook elements on the lower part and a favorable force application and force distribution initiated by the hook areas suspension forces or moments.

Furthermore, it is provided that the upper part has a handle insert for actuating the switch, which can be attached to a plurality of different positions on the upper part. This embodiment is provided for the fact that the handle insert, also called cover part, can be fastened again in an operating position on the upper part, if this is fastened after 180 ° rotation on the upper part and the upper part therefore also for re-arrangement on the busbars to 180 ° was turned.

In order to avoid arrangement problems or overlaps of the fuse switch-disconnector with other devices arranged in a switchgear, it is provided that the upper part has a symmetrical construction. This symmetrical construction of the upper part causes the upper part, which essentially has the geometrical enveloping dimensions of the fuse switch disconnector, to also rotate 180 ° can be fastened to the busbars again at the same position, wherein its body edges have the same distances from the busbar as before the rotation and thus result in no arrangement problems with adjacent devices.

For securing the lower part of the upper part or the hook-shaped clamping elements on the holding devices is additionally provided that the fuse switch disconnector comprises at least one locking device which locks at least one hook-shaped clamping element and a holding device in the fastening position. This device thus prevents inadvertent release of the lower part of the upper part in an improper external force.

Figur 1

eine Seitenansicht des erfindungsgemäßen Sicherungs-Lasttrennschalters;

Figur 2

eine perspektivische Ansicht des Unterteils;

Figur 3

eine perspektivische Ansicht einer Schnittdarstellung des Unterteils und

Figur 4

einen Ausschnitt aus einer Schnittdarstellung des Unterteils.

The invention will be described with reference to the accompanying drawings. Show it:

FIG. 1

a side view of the fuse circuit breaker according to the invention;

FIG. 2

a perspective view of the lower part;

FIG. 3

a perspective view of a sectional view of the lower part and

FIG. 4

a section of a sectional view of the lower part.

FIG. 1 shows a fuse switch disconnector according to the invention in the state suspended on bus bars 40. The lower part 20 bears against the busbars 40. On the lower part 20, the upper part 10 is arranged. The handle insert 30 is pivotally mounted on the upper part 10 for actuating the fuse switch-disconnector switch about an axis of rotation (not shown). On the upper part 10 is further the cable outlet 50 for guiding the power lines of the Fuse switch disconnector arranged. In the embodiment shown in Figure 1, the cable outlet 50 in the same direction as the opening of the lower part 20 arranged hooks 21 for partial enclosure of the busbars 40. In cramped installation conditions on the fuse switch disconnectors in the region of the cable outlet 50 may be the requirement, the cable outlet 50 in another position on the fuse switch disconnector. For this purpose, the invention provides that the upper part 10 is released from the lower part 20 and secured in a rotated position by 180 ° back to the lower part 20. In this rotated by 180 ° position of the upper part with respect to the lower part 20, the cable outlet 50 in the opposite direction, ie opposite to the opening direction of the hook 21 (not shown). In order to continue to operate the handle insert 30 in a standard operating angle, it is provided that this handle insert 30 can also be removed from the upper part 10 and secured in a rotated position by 180 ° back to the upper part 10.

FIG. 2 shows the lower part 20 of the fuse switch disconnector according to the invention. For electrical insulation of the hooks 21 for partially embracing the busbars 40, the lower part 20 has a likewise hook-shaped insulating layer in the region of the hooks 21. This insulating layer extends in addition to the hook-shaped region over the entire outer surface of the lower part 20th

FIG. 3 shows a sectional view of the lower part 20. Clearly visible is a arranged in the lower part 20 hook 21 for partially enclosing busbars and a hook-shaped clamping element 22 for sliding onto arranged in the upper part 10 holding devices 12. The figure 3 shows the preferred embodiment of the hook 21 and the hook-shaped clamping element 22 going there that both hook elements are integral in one component. That is, the hook 21 for partially enclosing a bus bar 40 and the hook-shaped clamping member 22 are each realized as a hook-shaped areas within a substantially s-shaped sheet metal part.

In Figure 4 is also enlarged the integral design of the hook 21 for partially enclosing a busbar 40 shown with the hook-shaped clamping element 22 in one component. The leg portions of the hook 21 for partially enclosing a busbar 40 include, as shown, partially a busbar 40 which abuts with a further region on the lower part 20. The hook-shaped clamping element 22 abuts with a leg 23 on the holding device 12. This holding device 12 consists essentially of two slidably arranged parts. Between these two parts of the holding device 12, a spring 13 is arranged, whose spring force when pushed onto the holding device 12 hook-shaped clamping element 22 exerts a compressive force against the leg 23 of the hook-shaped clamping element 22. When attaching or pushing the upper part 10 onto the lower part 20, the leg 23 of the hook-shaped clamping element 22 provided with a bevel or rounded region 24 is positioned substantially next to the holding device 12 and subsequently pushed laterally onto the holding device 12. When a weight force of the fuse switch-disconnector in the direction of the opening of the hook 21 for partially enclosing a busbar 40, this hook 21 is supported on the busbar 40 and the weight and the operating force of the fuse switch disconnector are received by the hook-shaped clamping element 22.

The force acting against the leg 23 of the hook-shaped clamping element 22 spring force of the spring 13 is the contact-safe contact of the holding device 12 on the hook-shaped clamping element 22 and also the frictional connection between these two components. The flow of current from the busbar 40 in the fuse switch disconnector is by the plant of the hook 21 on the busbar and by the system of Retaining device 12 causes the busbar 40 and the contacting connection to the upper part 10.

Claims (12)

Fuse-switch disconnectors for busbar contact with a top part, which has at least one cable outlet on one side, and with a lower part, are fixedly arranged in the direction of aligned hooks for partially enclosing busbars, wherein the lower part and the upper part are designed such that the lower part can be locked in relation to the upper part in a plurality of different positions on the latter, characterized in that the locking of the lower part (20) on the upper part (10) by sliding on the lower part (20) hook-shaped clamping elements (22) in the upper part (10) 10) integrated holding devices (12) takes place. Fuse switch-disconnector according to claim 1, characterized in that the lower part (20) in a position on the upper part (10) is attachable, in which the hooks (21) of the lower part (20) in the direction of the arrangement of the cable outlet (50) , or in a position on the upper part (10) is attachable, in which the hooks (21) on the lower part (20) in the opposite direction to the arrangement of the cable outlet (50). Fuse switch disconnectors according to one of the preceding claims, characterized in that the sliding of the hook-shaped clamping elements (22) on the holding means (12) in the direction opposite to the opening direction of the hook (21), which serve to partially enclose the busbar (40) takes place , Fuse-switch disconnector according to one of the preceding claims, characterized in that the locking of the lower part (20) on the upper part (10) takes place in a form-fitting manner. Fuse-switch disconnector according to one of the preceding claims, characterized in that the hook-shaped Clamping elements (22) and on the holding means (12) latching elements are arranged, which allow a latching respectively of a hook-shaped clamping element (22) on a holding device (12). Fuse-switch disconnector according to one of the preceding claims, characterized in that the holding devices (12) are spring holders. Fuse-switch disconnector according to claim 6, characterized in that the locking of the lower part (20) on the upper part (10) takes place positively and non-positively. Fuse-switch disconnector according to one of the preceding claims, characterized in that a leg (23) of the hook-shaped clamping element (22), which bears against the holding device (12), a slope or a rounded portion (24) to facilitate the sliding onto the holding device (12). Fuse switch-disconnector according to one of the preceding claims, characterized in that the hook-shaped clamping elements (22) integral with the hooks (21) for partially enclosing the bus bars (40) are formed. Fuse switch-disconnector according to one of the preceding claims, characterized in that the upper part (10) has a handle insert (30) for actuating the switch, which can be attached to a plurality of different positions on the upper part (10). Fuse switch-disconnector according to one of the preceding claims, characterized in that the upper part (10) has a symmetrical structure. Fuse switch-disconnector according to one of the preceding claims, characterized in that the fuse switch-disconnector additionally comprises at least one locking device which locks at least one hook-shaped clamping element (22) with a holding device (12) in fastening position with each other.

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