Title of Invention	A DEVICE AND METHOD FOR CONFIGURING AN ELECTRICAL CABINET IN PARTICULAR FOR OUTDOOR USE .
Abstract	The invention relates to a device for configuring an universally adaptable electrical cabinet (1), in particular for outdoor use, the cabinet accommodating distribution equipment including means for power supply, cable terminating and cable connecting, the cabinet (1) having an outer body (3), an inner installation frame (6), a paneling (46) for the inner installation frame (6), which comprises a plurality of base boxes (2a, b) dimensioned differently with regard to base area and projection above the ground, mounting plates (45) for connecting the installation frame (6) to a base box (2a, b), and a plurality of fastening positions for the mounting plates (45) on the installation frame (6).

Title of Invention

A DEVICE AND METHOD FOR CONFIGURING AN ELECTRICAL CABINET IN PARTICULAR FOR OUTDOOR USE .

Abstract

The invention relates to a device for configuring an universally adaptable electrical cabinet (1), in particular for outdoor use, the cabinet accommodating distribution equipment including means for power supply, cable terminating and cable connecting, the cabinet (1) having an outer body (3), an inner installation frame (6), a paneling (46) for the inner installation frame (6), which comprises a plurality of base boxes (2a, b) dimensioned differently with regard to base area and projection above the ground, mounting plates (45) for connecting the installation frame (6) to a base box (2a, b), and a plurality of fastening positions for the mounting plates (45) on the installation frame (6).

Full Text	Construction kit and method for creating an electrical cabinet for outdoor use I. Field of application The invention relates to an electrical cabinet which is generally set up outdoors and receives the distribution equipment for low-current systems, for example telephone systems, with associated power supply devices and cable terminating/connecting devices for a specific spatial area. II. Technical background Electrical cabinets of this type must satisfy various conditions, since they must help to meet the operating conditions, in particular the temperature, of the electrical components, in particular the electronic components, accommodated in them, since they are used in different states/regions, and various technical specifications or standards from the respective operators exist and have to be complied with, or because certain special climatic conditions exist in the intended region and have to be taken into account. In addition, general requirements, such as adequate structural stability and resistance to vandalism etc., must be satisfied. Electrical cabinets of this type are, in principle, produced either from metal or from plastic or from both materials, plastic combining the advantage of allowing cheaper production with the advantage of lower weight and an electrically nonconducting material. In addition, there is the problem that electrical cabinets of this type are not installed on the bare ground, but on or against what are known as base boxes, which are buried entirely or partly in the ground and serve for leading out the buried cables from the underlying ground. Apart from the different dimensioning of these base boxes and the different heights to which they rise up (upper edge level with the surface of the ground or projecting above it), there are also different requirements with regard to the interaction with base boxes of this type: in one case, the electrical cabinet is intended to rest on the base box, in the other case the base box is not to be visible, that is to say the electrical cabinet is intended to encase the base box on the sides and at the top. This is intended in particular to help to avoid underground engineering work, to the extent that base boxes of an earlier, obsolete type of construction do not have to be exchanged for new bases made to match the electrical boxes [sic]. To avoid a separate electrical cabinet having to be designed and constructed according to prevailing boundary conditions, the object of the invention is to provide such a construction kit and a method for creating electrical cabinets which permits adaptation to the various boundary conditions with only a few individual parts. The various construction and installation variants which are to be achieved are as follows: - Mounting the electrical cabinet on the upper side of a base box ending level with the ground, Receiving a base box rising up from the surface in the lower region of the electrical cabinet, it being received at least in the outer body of the electrical cabinet, better in the interior of the installation frame, - Partitioning off the receiving space, that is to say the space within the installation frame, from the intermediate space, that is to say the distance between the installation frame and the outwardly surrounding outer body; in this case, a distinction must be made between the partitioning off to the sides and the partitioning off at the top, - Arrangement of the predetermined breaking elements between the base box and the electrical cabinet or within the multi-part base box, Fitting out the outer body with or without an upper intermediate part between the cover and the parts of the body lying thereunder, - Fitting out the electrical cabinet with or without EMC shielding. Furthermore, it is also known from DE 73 19 283 U, as the closest prior art, to fasten the installation frame of an electrical cabinet in such a way that it can be adjusted in height with respect to the underlying ground. However, this does not take place by fastening at different positions of the installation frame, and nor is it the case that differently dimensioned base boxes and base boxes rising up to different heights are provided there. On the other hand, FR 2 785 100 shows different installation heights of the base on the electrical cabinet, the electrical cabinet not having an installation frame in this case. DE 296 23 678 U1 also shows the use of different base boxes, even though, when a plurality of base boxes are used there, altogether the same overall dimensions of the bases, seen in plan view, are always achieved. In addition, DE 295 19 260 U shows a double-walled switch cabinet with a distance between the outer skin and the inner skin of the switch cabinet and air circulation taking place in between. DD 39 240 A shows an electrical cabinet with an inner installation frame comprising profiles, with venting openings between its outer paneling and its cover. In addition, DE 32 05 934 shows a bottom panel, which can be made up from a plurality of elements, for an electrical cabinet. III. Summary of the invention a) Technical object It is therefore the object according to the invention to provide a construction kit for creating an electrical cabinet which can optionally satisfy different specifications with regard to base area and projection of the base above the surface of the ground and also with regard to EMC shielding and ventilation and venting. b) Solution achieving the object This object is achieved by the defining features of claims 1 and 24. Advantageous embodiments emerge from the subclaims. To be able to fasten the electrical cabinet on base boxes rising up to different heights above the surface of the ground, in particular also on base boxes ending level with the surface of the ground, that is to say not rising up above it, the mounting plates, which establish the connection between the installation frame and the base box, can be arranged at different fastening positions of the installation frame. These fastening positions differ firstly with regard to the height on the installation frame, since they can be arranged either on the lower cross struts of the installation frame [lacuna]. In this case, the electrical cabinet later rests on the upper side of the base box. In the case of a base box ending level with the ground, that is to say more or less on the surface of the ground, in the case of a base box rising up above the surface of the ground the electrical cabinet would extend upward from the upper edge of the base box. Furthermore, the different base boxes differ in their width, that is to say in the transverse direction, the large base area dimensioning, considered also in depth, the smaller base area dimensioning. Since specifically the dimensioning of the depth varies greatly, the clear, inner width of the installation frame, within which the base box is to be accommodated, does not have to be dimensioned according to the greatest depth of the base boxes, but instead the installation frame may be designed to be somewhat less deep in comparison, in that one of the lower cross struts of the installation frame is removable, that is to say in the case of very deep base boxes the thickness of the cross strut is also included in order for the base box then still to be accommodated within the outer body of the electrical cabinet but no longer completely within the installation frame. Although the stability of the installation frame is reduced as a result, it still lies within the acceptable limits, in particular also on account of the fact that, between the upper and lower cross struts, there are, for stiffening purposes, middle cross struts in the transverse direction between the vertical edges and the vertical struts present there of the installation frame. It is preferred, however, for the installation frame, considered in plan view, to run around the base box, that is to say both cross struts are also present. These cross struts are arranged at a height of the remaining installation frame that corresponds to the height of the upper edge of the base box - in the case of base boxes rising up above the surface of the ground. The mounting plates are then fastened to these cross struts by screwing, and, after the installation frame has been mounted on the base box, these mounting plates, which extend from the front cross strut to the rear cross strut, are fastened on the upper side of the base box. The spacing of the mounting plates depends on the width of the base box, so that the mounting plates are fastened near the outer ends of the upper side of the base box, in order to achieve a good supporting effect. If a base box which does not rise up above the surface of the ground, or only slightly, is concerned, or if the electrical cabinet is to rest on the upper side of the base box, these mounting plates are fastened to the lower cross struts. Furthermore, a distinction has to be made according to whether the receiving space in the interior of the installation frame is to be thermally separated from the surrounding intermediate space between the installation frame and the outer body, that is to say with regard to air circulation and/or with regard to electromagnetic radiation. For a thermal separation, the inner installation frame 6 [sic] is paneled with sheet-like, closed panels, preferably on the outer side of the installation frame or on the inner side of the latter. This takes place on the rear side and the side walls. The front wall, in which the outer body generally has one or more doors for opening the electrical cabinet, must also be fitted out with analogous elements to be opened, that is to say doors or flaps etc., with regard to such paneling on the inner installation frame. Furthermore, a distinction has to be made according to whether or not this inner receiving space is also to be thermally separated at the upper side, that is to say at the upper end of the installation frame, by a closed panel from the cover space lying thereabove of the surrounding body. In this case, paneling of the upper side of the inner installation frame is also necessary. This may take place by means of a separate paneling part or else by mounting an intermediate part between the cover of the outer body and the rest of the body, provided that this intermediate part has a continuous lower panel and, in spite of the fastening to the remaining parts of the outer body, can be mounted snugly on the upper side of the inner installation frame. This must be ensured by the connecting elements used for the purpose of fastening the outer body to the inner installation frame allowing this intermediate part to be mounted on the upper side of the installation frame. The outer body generally comprises panel-shaped individual parts for the individual walls and additionally, on the front side, one or more doors which can be moved with respect to the front panel, and also a separate upper cover. The outer body, in particular its panel-shaped individual parts, generally consist of plastic, in particular, to improve the insulation, of foamed plastic, in particular foamed polycarbonate. In addition, the construction kit may also comprise an outer body and, in particular, panel-shaped individual parts of such an outer body made of metal, in particular sheet steel or sheet aluminum. In this case, the outer body has inlet openings in the lower region for letting the ambient air into the intermediate space. Outflow openings are present between the cover and the rest of the outer body or in the upper intermediate part, it being necessary for flowing of the air rising up in the intermediate space - on account of heating up caused by solar radiation on the outer side of the parts of the body - from the intermediate space into the upper intermediate part to be made possible by lead-through openings. The lower inlet openings may also be realized by a distance which serves for allowing the air to enter the intermediate space existing between the lower end of the walls of the outer body and the ground. Consequently, a number of thermal circulation models can be realized: if the inner receiving space is separated laterally and at the top from the surrounding intermediate space, an air circulation taking place exclusively in this inner installation space is established - initiated by the waste heat of the active electrical elements arranged in the inner receiving space, such as lost heat of the control electronics etc. Heat is extracted from this circulation, in that the circulation heats up the paneling of the installation frame, and this paneling is cooled in that, on the outside, in the intermediate space between the paneling of the installation frame and the outer body, air from the ambience flows in at the bottom and flows out again at the top, possibly via the upper intermediate part and possibly by means of active cooling by the intermediate part (a fan which accelerates the circulation between the outer body and the inner, paneled installation frame partitioned off from the intermediate space with respect to the outer body, or a heat exchanger or cooling element in the paneling of the inner installation frame, in particular the upper termination of the latter, although the partitioning off between the inner installation space and the outer intermediate space between the paneled installation frame and the body is to be retained). If the inner receiving space is only partitioned off at the sides from the intermediate space by means of paneling, this inner circulation also includes the cover space, that is to say the space between the cover of the outer body and the remaining parts of the body. In general, however, the installation frame is also paneled at the top and is consequently partitioned off both at the top and at the sides, and consequently completely, from the outer intermediate space, that is to say the space between the paneling of the installation frame and the surrounding body. The procedure during the installation of the electrical cabinet on the base box may also vary: If the electrical cabinet is not intended to enclose the base box, but merely to rise up from the upper side of the latter, simple mounting - firstly of the installation frame - is self-evident, it generally been the case that the outer body and/or the interior fitting out of the installation frame, including the subrack, only takes place subsequently. If, on the other hand, the electrical cabinet is intended to enclose the base box projecting above the surface of the ground, different procedures are possible: If the buried cables, which can only be bent with difficulty, protrude out above the upper side of the base box, it is preferred for the electrical cabinet, that is to say firstly its installation frame, to be slipped over the base box from above. If, however - which is not generally the case - the base box is larger in terms of base area than the clear interior space of the installation frame, this is not possible. It is then appropriate for the installation frame to be pushed horizontally over the upwardly projecting part of the base box, it being necessary for this purpose for one of the lower cross struts of the installation frame first to be detached from the latter and also to remain removed if the base area of the base box is greater than the clear interior space between the fitted lower cross struts of the installation frame. If an existing base box, projecting above the surface of the ground, still does not comprise predetermined breaking elements between the part of the base box projecting out of the ground and the part located in the ground, such predetermined breaking elements must be provided when the electrical cabinet is fastened to the base box, for example between the mounting plates and the base box. c) Exemplary embodiments Embodiments according to the invention are described in more detail below by way of example and with reference to the figures, in which: figure 1 shows basic representations of the installation versions in section, figure 2 shows thermal circulations in the electrical cabinet in section, figures 3 show individual views of the installation state without an outer body, figures 4 show individual views according to figures 3 with an outer body, figure 5 shows a perspective view of the state of figure 3, figure 6 shows the perspective view in a further-advanced installation state, figure 7 shows a perspective view of the partly installed switch cabinet on a base according to figure 1 b and figure 8 shows a perspective view of the switch cabinet according to figure 7 after complete installation. Figures 1 and 2 show electrical cabinets 1, considered with a viewing direction into the depth 40 of these electrical cabinets, in each case cut open along the transverse direction 20, the direction of greatest horizontal extent of these electrical cabinets. Figure 1a shows the installation diagram of a base box 2a with a superstructure. This base box 2a rises up partly upward above the surface of the ground 22. The projecting part 2a1 is usually connected by means of predetermined breaking elements 21 with respect to the part 2a" embedded in the ground, in order that the tearing off of the upper part 2a' when it is driven into by a car does not also damage or displace the part 2a" lying in the ground. The base box 2a is usually open at the top and bottom and serves for leading out the buried cables 8, which are laid underground, with their free end upward in the direction of the electrical cabinet to be provided there, and also as a stable foundation for the electrical cabinet to be provided on it. Furthermore, additional elements, for example batteries 16, which are intended to ensure a power supply to the control components of the electrical cabinet over a certain time even in the event of a power failure, may be accommodated in the interior of the base box, in particular within its upper part 2a'. The electrical cabinet 1 in this case encloses the upper part 2a of the base box 2a, protecting upward above the surface of the ground 22. The inner installation frame 6 of the electrical cabinet 1 is generally made up of individual struts, which run along the outer edges of the cubic form of this installation frame 6 and usually comprise metal profiled struts, for instance made of aluminum. The interior space of this installation frame 6 serves for receiving subassemblies such as fuses and controllers in at least part of this receiving space. In the case of base boxes 2a projecting above the surface of the ground 22, the upper part 2a' of the base box 2a is received in the lower receiving space 42 of the installation frame 6, which is partitioned off for this purpose, for example by means of cross struts 34a,b running in the transverse direction, from the upper receiving space 41, which serves for receiving the subassemblies of the electrical cabinet. As figure 1a shows, the installation frame 6 with its middle cross struts 34a,b, running between the upper and lower ends, and the mounting plates 45 running therein in the direction of the depth 40, are mounted on the upper side of the upper part 2a' of the base box 2a, so that the vertical corner struts of the installation frame extend alongside the upper part 2a' of the base box 2a further downward to just above the surface of the ground. The mounting plates 45 are fastened to the cross struts 34, set back inward from the free ends of the latter to such an extent that they still lie in the region of the transverse extent of the base box 2a. In the region of the height of the upper receiving space 41, subracks 9 in the form of vertically running struts are screwed between the upper cross struts 35c,d and the middle cross struts 34a,b, on which subracks there can be arranged carrier plates 11, which carry the individual electronic or electromechanical subassemblies. Slipped over this installation frame 6 - possibly paneled as described later - is the outer body 3, which represents the outer protection, in particular weather protection, of the electrical cabinet and also serves for its climatic control, as described below. The outer body 3 often consists of plastic and is in this case - as figures 4 and 6 show in particular - made up of individual panels for the rear wall, side walls, doors and cover. At the height of the middle cross struts 34, the upper receiving space 41 may be additionally separated from the lower receiving space 42 by a bottom sheet 18, which however must have the appropriate clearances for the buried cables 8. The installation diagram of figure 1b is based in comparison on a base box 2b which on the one hand ends with its upper side at the height of the surface of the ground 22, that is to say it is completely within the ground, and has in addition a different, generally larger, base area extent, at least in the transverse direction 20. In this case, the electrical cabinet 1 is fastened with its lowermost horizontal struts on the upper side of the base box 2b sunken completely in the ground, the mounting plates 45 in turn being fastened in the direction of the depth 40 between the front and rear, lower cross struts 35a,b, to be precise set outward in the transverse direction 20 to such an extent that they rest on the ends of the upper side of the base box 2b. In the middle region, the installation frame 6 is in this case preferably stiffened as before by means of middle cross struts 34a,b, but now the receiving space 42 located below these middle cross struts can optionally likewise be used for receiving electrical subassemblies, including for receiving batteries 16. In this lower receiving space there may also be an element fastened horizontally to the installation frame 6, for fixing the position of the buried cables, for example a cable fastening rail 26. The arrangement of the remaining elements in relation to the surface of the ground 22 is the same as in the case of figure 1a. What is different is the arrangement of the predetermined breaking elements 21, which are now arranged between the mounting plates 45 and the base box 2b. Figure 2 shows the form of installation according to figure 1b in the same sectional representation but with regard to the air circulation now taking place within the electrical cabinet 1, caused by uneven heating up: On the one hand, the outer body 3 is in this case exposed to solar radiation. On the other hand, arranged at least in the upper receiving space 41 are electrical subassemblies 12, which are energy consumers and produce waste heat, and consequently heat up the receiving space 41. If the upper receiving space 41 is open with respect to the lower receiving space 42, that is to say in between there are only the cross struts 34a,b on the sides, a vertical circulation in which the heated air rises, cools on the upper frame cover 26 and falls downward, is produced in the interior of the installation frame 6, extending over both receiving spaces 41, 42. Separately from this there exists an air flow in the surrounding intermediate space 19 between the installation frame 6 and the outer body 3, if the installation frame 6 is paneled for this purpose on the outside with plastic panels or other continuous panels. If this paneling is additionally intended to offer EMC shielding, a metallic covering, or at least fitting out with metal foil, is necessary for this. For the interior space of the installation frame 6 to be accessible, the paneling of this installation frame 6 must likewise have inner doors or flaps. The air flow in the intermediate space 19 is not a closed circulation, but instead the air penetrates here through inlet openings 27 in the lower region of the body 3 into the intermediate space 18, for example - as represented on the right-hand side of figure 2 - in that the outer walls of the body 3 do not quite reach down to the ground. In the upper region of the body, there are air outlet openings 13, either between the cover 5 and the side walls of the body 3 or in an upper intermediate part 7, which is set between the cover 5 and the rest of the body 3, and may have additional active or passive cooling or heating components. Figures 3 show the installation situation of figure 1a, that is to say with the base box 2a rising up partly above the surface of the ground 22, with not yet completed fastening of the installation frame 6 to the base box 2a, in rear view (figure 3a), side view (figure 3b), front view (figure 3c) and plan view (figure 3d). As figures 3a-c show in particular, middle cross struts 34a,b are in this case fitted between the vertical struts of the installation frame 6, such that they run in the transverse direction 20. Fastened to the installation frame, in particular to these cross struts 34a,b, are mounting plates 45, which run from the front cross strut 34a to the rear cross strut 34b, that is to say in the direction of the depth 40 of the electrical cabinet 1. The height of the cross struts 34a,b is chosen such that, when the mounting plates 45 are mounted on the upper side of the upper part 2a1 of the base box 2a, the installation frame 6 ends just above the surface of the ground 22. To achieve this positioning, one of the lower cross struts according to figures 3 and also the analogous, three-dimensional representation of figure 5, for example the front lower cross strut 35a, is removed from the installation frame 6 and the installation frame 6 is then pushed horizontally along the ground or, raised just slightly, over the upper part 2a' of the base box 2a in such a way that, as described, the mounting plates 45 rest on the upper side of the base box 2a. While this pushing-over has only partly taken place in figures 3 and 5, figure 6 shows a later installation state, in which the pushing-over has been completed and the previously removed lower cross strut 35a has also been fastened again to the installation frame 6, and side walls and the rear wall of the body 3 and also the cover 5 have already been mounted on the outer side of the installation frame 6, at a distance, with an upper intermediate part 7 being arranged between the cover 5 and the remaining body 3, permitting air outlet openings 13 for the air to leave from the intermediate space 19 between the outer body 3 and the inner installation frame 6. The representations of figures 4, the individual views of which correspond with regard to the viewing direction to those of figures 3, show yet a further installation state in comparison with the latter, in which the outer body 3 has also already been completed by adding a door 4 and a front panel 14. Figure 7 shows the partly completed electrical cabinet 1, mounted on a base box 2b. The main difference in comparison with the representations of figures 5 and 6 is that, in the case of figure 7, the electrical cabinet 1 is mounted with its lower edge on the upper side of a base box 2b, and consequently overall in accordance with the basic representation of figure 1b, since this base box 2b is fitted essentially completely in the ground, so that the upper edge of the base box 2b is at the same time the surface of the ground 22. As can be seen, the base box 2b comprises a grid as a base, on which the base structure rises up, and has an outer surrounding of its own in the upper region, near the surface of the ground 22. On the - open - upper side of this base box 2b there is fastened, according to figure 7, the installation frame 6 of the electrical cabinet 1, in which - as a difference from figures 5 and 6 - the mounting plates 45, which in the side regions extend through from the front cross strut to the rear cross strut, are not fastened to the cross struts 34a,b, fastened in the middle region of the installation frame 6, but to the lower cross struts 35a,b. This produces a height of the installation frame 6, and consequently also of the later electrical cabinet 1, above the surface of the ground 22 which corresponds to the other solution according to figures 5 and 6, but, according to figure 7, the lower receiving space 42 is also available for receiving electrical components. It is nevertheless also the case with the solution according to figure 7 that the subracks 9 extend only from the middle cross struts 34 to the upper cross struts. In figure 7, the upper sides and the side faces and also the rear side are provided with a paneling 46 of continuous panels, preferably made of an EMC-shielding material such as aluminum for instance, which are fastened between the struts of the installation frame 6. Figure 8 shows the structure of the electrical cabinet at a more advanced stage of completion in comparison with figure 7, that is to say with a complete body 3, surrounding the installation frame . 6, including an upper intermediate part 7 mounted thereupon, with already described air outlet openings 13 at the periphery and a cover 5 closing off the upper intermediate part 13 [sic] at the top. The front side of the electrical cabinet is in this case closed over the height of the upper receiving space 41, that is to say from the front middle cross strut 34a to the front upper cross strut, by a door 4 hinged on the right, while the lower front region, that is to say the height of the lower receiving space 42, is closed by means of a front panel 14, which may preferably be swung open forward by means of hinges in the lower region, along the lower edge. If an EMC shielding of the electrical cabinet 1 is desired, the front panel 14 and door 4 must likewise provide EMC shielding and, if produced from plastic, preferably have an inner covering of EMC-shielding material, such as aluminum for instance. LIST OF DESIGNATIONS 1 electrical cabinet 23 battery 2 base box 24 cable lead-through opening 3 body 25 lead-through plate 4 door 26 frame cover 5 cover 27 air inlet opening 6 installation frame 28 cable fastening rail 7 upper intermediate part 29 row of holes 8 buried cable 30 rib 9 subrack 31 false bottom 10 vertical longitudinal 32 edge direction 33 connecting element 11 carrier plate 34a, 34b cross struts 12 electrical subassembly 35a, 35b cross struts 13 air outlet opening 36 cooling ribs 14 front panel 37 drive 16 batteries 38 bucket wheel 18 bottom sheet 39 blade 19 intermediate space 40 depth 20 transverse direction 41 upper receiving space 21 predetermined breaking 42 lower receiving space elements 44 fastening position 22 surface of the ground 45 mounting piate 46 paneling WE CLAIM 1. A device for configuring an electrical cabinet (1), in particular for outdoor use, the cabinet accommodating distribution equipment including means for power supply, cable terminating and cable connecting, the cabinet (1) having : - an outer body (3), - an inner installation frame (6), - a paneling (46) for the inner installation frame (6), which comprises: - a plurality of base boxes (2a, b) dimensioned differently with regard to base area and projection above the ground, - mounting plates (45) for connecting the installation frame (6) to a base box (2a, b), and - a plurality of fastening positions for the mounting plates (45) on the installation frame (6). 2. The device as claimed in claim 1, wherein the base boxes (2a, b) comprise at least one first base box (2a) projecting above the surface of the ground and a second base box (2b) ending level with the ground. 3. The device as claimed in one of the preceding claims, wherein the installation frame (6) has between its upper and lower ends at least two first cross struts (34) running at the same height in the transverse direction (20), the greater horizontal dimension of the electrical cabinet (1), and, in particular, the fastening positions (44) for fastening the mounting plates (45) are arranged in the path of the first cross struts (34). 4. The device as claimed in one of the preceding claims, wherein the mounting plates (45) run in the direction of the depth (40) of the electrical cabinet (1) and connect the first pair of cross struts (34a, b), lying parallel and horizontal next to each other, to each other and, in particular, are displaceable along the first pair of the first cross struts (34a, b). 5. The device as claimed in one of the preceding claims, wherein the vertical position of the first pair of the first cross struts (34a, b) on the installation frame (6) is variable. 6. The device as claimed in one of the preceding claims, wherein the installation frame (6) has a first pair of a second cross struts (35a, b) at the upper and lower ends and at least one of the first pair of the second cross struts (35a) can be detached from the installation frame (6). 7. The device as claimed in one of the preceding claims, comprising predetermine breaking elements (21). 8. The device as claimed in one of the preceding claims, wherein the predetermined breaking elements (21) are fastened to the mounting plates (45), in particular are formed in one piece together with the mounting plates (45). 9. The device as claimed in one of the preceding claims, wherein the predetermined breaking elements are arranged in the base box (2a, b), in particular in the first base box (2a) rising up above the surface of the ground (22) between an upper part (2a') and a part (2a") lying below the surface of the ground. 10.The device as claimed in one of the preceding claims, comprising subracks (9) for fastening to the installation frame (6), in particular to the inner surface of the frame (6), and the subracks (9) comprise in particular vertically running profiled struts. 11.The device as claimed in one of the preceding claims, wherein the subracks (9) extend in the vertical direction along the upper receiving space (41), for example, from the first pair of the first cross struts (34a, b) to the second pair of the first cross struts (34c, d), 12.The device as claimed in one of the preceding claims, wherein the installation frame (6) has a clear width in the transverse direction (20) which is grater than the width of the largest base box (2a,b) in this direction. 13.The device as claimed in one of the preceding claims, wherein the installation frame (6) has a depth, measured from the inside edge of the one of the first of the second cross struts (35a,b) to the opposite outside edge in the direction of the depth (40), which is greater than the depth of the deepest base box (2a,b) in the direction of the depth (40). 14.The device as claimed in one of the preceding claims, comprising a bottom sheet (18) with cable lead-through openings (24), in particular for fastening to the first and second cross struts (34,35), in particular the first pair of the second cross struts (35a, b), running transversely in the direction of the depth (40). 15.The device as claimed in one of the preceding claims, wherein the paneling (46) for the installation frame (6) can be fastened on one of the outer surfaces and/or inner surfaces of the installation frame (6) and seals at least the peripheral surfaces of the installation frame (6). 16.The device as claimed in one of the preceding claims, wherein the paneling (46) comprises a frame cover (26), which partitions off the upper receiving space (41) within the installation frame (6) from the interior space lying thereabove of the outer body (3). 17.The device as claimed in one of the preceding claims, wherein the outer body (3) surrounds the inner installation frame (6) at a distance on the outside and comprise air inlet openings (27) in the lower region. 18.The device as claimed in one of the preceding claims, wherein the outer paneling (46) comprises individual panels for the side walls and rear wall and also a front wall with at least one door (4) and a cover (5). 19.The device as claimed in one of the preceding claims, wherein an upper intermediate part (7), in particular with air outlet openings (13) to the outside, si provided between the cover (5) and the lower part of the body (3). 20.The device as claimed in one of the preceding claims, wherein the lower part of the body (3), for example, the part of the body (3) lying under the intermediate part (7) or the cover (5), forms a closed housing when the door (4) is closed. 21.The device as claimed in one of the preceding claims, comprising connecting elements (33) for connecting the outer body (3) to the inner installation frame (6). 22.The device as claimed in one of the preceding claims, wherein the parts of the outer body (3) consist of plastic, in particular panel-shaped plastic elements, in particular foamed plastic, in particular foamed polycarbonate. 23.The device as claimed in one of the preceding claims, wherein the inner installation frame (6) comprises profiled bars, in particular of metal, which are in particular screwed to one another. 24. A method for configuring an universally adaptable electrical cabinet (1), in particular for outdoor use, the cabinet accommodating distribution equipment including means for power supply, cable terminating and cable connecting the method comprising the steps of: - fastening the first pair of the first cross struts (34a, b) to the remaining installation frame (6) at a defined height, - arranging the mounting plates (45a, b) at the fastening positions (44a, b) either on the first pair of the first cross struts (34a, b) or the first pair of the second cross struts (35a, b), - positioning the installation frame (6) fitted out in this way with respect to the fitted base box (2a, b), - fastening the mounting plates (45) on the upper side of the base box (2a, b). 25.The method as claimed in claim 24, wherein, before arranging the mounting plates (45), the predetermined breaking elements (12) are fastened to the mounting plates (45). 26.The method as claimed in one of the preceding method claims, wherein, before the positioning of the installation frame (6) with respect to the base box (2a, b), the subracks (9) are fastened, in particular screwed, second pair of the second between the cross struts (35c,d) and the first pair of first cross struts (34a, b) or the first pair of second cross struts (35a, b). 27.The method as claimed in one of the preceding method claims, wherein, the installation frame (6) is positioned with respect to the first base box (2a) by pushing over in the vertical direction from above. 28.The method as claimed in one of the preceding method claims, wherein, the installation frame is positioned with respect to the first base box (2a) in that the front, the cross strut (35a) is removed from the mounting frame (6) and the mounting frame (6) is pushed in the horizontal direction, in the direction of the depth (40), over the first base box (2a) or the upper part (2a') of the latter, projecting above the surface of the ground. 29.The method as claimed in one of the preceding method claims, wherein, one of the paneling (46) and the outer body (3) is fastened to the installation frame (6) after the installation frame (6) has been fitted out with the electrical, electronic and mechanical subassemblies received in it in the interior of the installation frame (6). The invention relates to a device for configuring an universally adaptable electrical cabinet (1), in particular for outdoor use, the cabinet accommodating distribution equipment including means for power supply, cable terminating and cable connecting, the cabinet (1) having an outer body (3), an inner installation frame (6), a paneling (46) for the inner installation frame (6), which comprises a plurality of base boxes (2a, b) dimensioned differently with regard to base area and projection above the ground, mounting plates (45) for connecting the installation frame (6) to a base box (2a, b), and a plurality of fastening positions for the mounting plates (45) on the installation frame (6).

Full Text

Construction kit and method for creating an electrical
cabinet for outdoor use
I. Field of application
The invention relates to an electrical cabinet which is generally set up outdoors
and receives the distribution equipment for low-current systems, for example
telephone systems, with associated power supply devices and cable
terminating/connecting devices for a specific spatial area.
II. Technical background
Electrical cabinets of this type must satisfy various conditions, since they must
help to meet the operating conditions, in particular the temperature, of the
electrical components, in particular the electronic components, accommodated in
them, since they are used in different states/regions, and various technical
specifications or standards from the respective operators exist and have to be
complied with, or because certain special climatic conditions exist in the intended
region and have to be taken into account.
In addition, general requirements, such as adequate structural stability and
resistance to vandalism etc., must be satisfied.
Electrical cabinets of this type are, in principle, produced either from metal or from
plastic or from both materials, plastic combining the advantage of allowing cheaper
production with the advantage of lower weight and an electrically nonconducting
material.
In addition, there is the problem that electrical cabinets of this type are not
installed on the bare ground, but on or against what are known as base boxes,
which are buried entirely or partly in the ground and serve for leading out the
buried cables from the underlying ground.
Apart from the different dimensioning of these base boxes and the different
heights to which they rise up (upper edge level with the surface of the ground or
projecting above it), there are also different requirements with regard to the
interaction with base boxes of this type: in one case, the electrical cabinet is
intended to rest on the base box, in the other case the base box is not to be
visible, that is to say the electrical cabinet is intended to encase the base box on
the sides and at the top.
This is intended in particular to help to avoid underground engineering work, to the
extent that base boxes of an earlier, obsolete type of construction do not have to
be exchanged for new bases made to match the electrical boxes [sic].
To avoid a separate electrical cabinet having to be designed and constructed
according to prevailing boundary conditions, the object of the invention is to
provide such a construction kit and a method for creating electrical cabinets which
permits adaptation to the various boundary conditions with only a few individual
parts.
The various construction and installation variants which are to be achieved are as
follows:
- Mounting the electrical cabinet on the upper side of a base box ending level
with the ground,
Receiving a base box rising up from the surface in the lower region of the
electrical cabinet, it being received at least in the outer body of the electrical
cabinet, better in the interior of the installation frame,
- Partitioning off the receiving space, that is to say the space within the
installation frame, from the intermediate space, that is to say the distance
between the installation frame and the outwardly surrounding outer body; in
this case, a distinction must be made between the partitioning off to the sides
and the partitioning off at the top,
- Arrangement of the predetermined breaking elements between the base box
and the electrical cabinet or within the multi-part base box,
Fitting out the outer body with or without an upper intermediate part between
the cover and the parts of the body lying thereunder,
- Fitting out the electrical cabinet with or without EMC shielding.
Furthermore, it is also known from DE 73 19 283 U, as the closest prior art, to
fasten the installation frame of an electrical cabinet in such a way that it can be
adjusted in height with respect to the underlying ground. However, this does not
take place by fastening at different positions of the installation frame, and nor is it
the case that differently dimensioned base boxes and base boxes rising up to
different heights are provided there.
On the other hand, FR 2 785 100 shows different installation heights of the base
on the electrical cabinet, the electrical cabinet not having an installation frame in
this case.
DE 296 23 678 U1 also shows the use of different base boxes, even though, when
a plurality of base boxes are used there, altogether the same overall dimensions of
the bases, seen in plan view, are always achieved.
In addition, DE 295 19 260 U shows a double-walled switch cabinet with a
distance between the outer skin and the inner skin of the switch cabinet and air
circulation taking place in between.
DD 39 240 A shows an electrical cabinet with an inner installation frame
comprising profiles, with venting openings between its outer paneling and its
cover.
In addition, DE 32 05 934 shows a bottom panel, which can be made up from a
plurality of elements, for an electrical cabinet.
III. Summary of the invention
a) Technical object
It is therefore the object according to the invention to provide a construction kit for
creating an electrical cabinet which can optionally satisfy different specifications
with regard to base area and projection of the base above the surface of the
ground and also with regard to EMC shielding and ventilation and venting.
b) Solution achieving the object
This object is achieved by the defining features of claims 1 and 24. Advantageous
embodiments emerge from the subclaims.
To be able to fasten the electrical cabinet on base boxes rising up to different
heights above the surface of the ground, in particular also on base boxes ending
level with the surface of the ground, that is to say not rising up above it, the
mounting plates, which establish the connection between the installation frame
and the base box, can be arranged at different fastening positions of the
installation frame. These fastening positions differ firstly with regard to the height
on the installation frame, since they can be arranged either on the lower cross
struts of the installation frame [lacuna]. In this case, the electrical cabinet later
rests on the upper side of the base box. In the case of a base box ending level
with the ground, that is to say more or less on the surface of the ground, in the
case of a base box rising up above the surface of the ground the electrical cabinet
would extend upward from the upper edge of the base box.
Furthermore, the different base boxes differ in their width, that is to say in the
transverse direction, the large base area dimensioning, considered also in depth,
the smaller base area dimensioning.
Since specifically the dimensioning of the depth varies greatly, the clear, inner
width of the installation frame, within which the base box is to be accommodated,
does not have to be dimensioned according to the greatest depth of the base
boxes, but instead the installation frame may be designed to be somewhat less
deep in comparison, in that one of the lower cross struts of the installation frame is
removable, that is to say in the case of very deep base boxes the thickness of the
cross strut is also included in order for the base box then still to be accommodated
within the outer body of the electrical cabinet but no longer completely within the
installation frame. Although the stability of the installation frame is reduced as a
result, it still lies within the acceptable limits, in particular also on account of the
fact that, between the upper and lower cross struts, there are, for stiffening
purposes, middle cross struts in the transverse direction between the vertical
edges and the vertical struts present there of the installation frame. It is preferred,
however, for the installation frame, considered in plan view, to run around the base
box, that is to say both cross struts are also present.
These cross struts are arranged at a height of the remaining installation frame that
corresponds to the height of the upper edge of the base box - in the case of base
boxes rising up above the surface of the ground.
The mounting plates are then fastened to these cross struts by screwing, and,
after the installation frame has been mounted on the base box, these mounting
plates, which extend from the front cross strut to the rear cross strut, are fastened
on the upper side of the base box.
The spacing of the mounting plates depends on the width of the base box, so that
the mounting plates are fastened near the outer ends of the upper side of the base
box, in order to achieve a good supporting effect.
If a base box which does not rise up above the surface of the ground, or only
slightly, is concerned, or if the electrical cabinet is to rest on the upper side of the
base box, these mounting plates are fastened to the lower cross struts.
Furthermore, a distinction has to be made according to whether the receiving
space in the interior of the installation frame is to be thermally separated from the
surrounding intermediate space between the installation frame and the outer body,
that is to say with regard to air circulation and/or with regard to electromagnetic
radiation. For a thermal separation, the inner installation frame 6 [sic] is paneled
with sheet-like, closed panels, preferably on the outer side of the installation frame
or on the inner side of the latter. This takes place on the rear side and the side
walls. The front wall, in which the outer body generally has one or more doors for
opening the electrical cabinet, must also be fitted out with analogous elements to
be opened, that is to say doors or flaps etc., with regard to such paneling on the
inner installation frame.
Furthermore, a distinction has to be made according to whether or not this inner
receiving space is also to be thermally separated at the upper side, that is to say
at the upper end of the installation frame, by a closed panel from the cover space
lying thereabove of the surrounding body. In this case, paneling of the upper side
of the inner installation frame is also necessary. This may take place by means of
a separate paneling part or else by mounting an intermediate part between the
cover of the outer body and the rest of the body, provided that this intermediate
part has a continuous lower panel and, in spite of the fastening to the remaining
parts of the outer body, can be mounted snugly on the upper side of the inner
installation frame.
This must be ensured by the connecting elements used for the purpose of
fastening the outer body to the inner installation frame allowing this intermediate
part to be mounted on the upper side of the installation frame.
The outer body generally comprises panel-shaped individual parts for the
individual walls and additionally, on the front side, one or more doors which can be
moved with respect to the front panel, and also a separate upper cover.
The outer body, in particular its panel-shaped individual parts, generally consist of
plastic, in particular, to improve the insulation, of foamed plastic, in particular
foamed polycarbonate.
In addition, the construction kit may also comprise an outer body and, in particular,
panel-shaped individual parts of such an outer body made of metal, in particular
sheet steel or sheet aluminum.
In this case, the outer body has inlet openings in the lower region for letting the
ambient air into the intermediate space. Outflow openings are present between
the cover and the rest of the outer body or in the upper intermediate part, it being
necessary for flowing of the air rising up in the intermediate space - on account of
heating up caused by solar radiation on the outer side of the parts of the body -
from the intermediate space into the upper intermediate part to be made possible
by lead-through openings.
The lower inlet openings may also be realized by a distance which serves for
allowing the air to enter the intermediate space existing between the lower end of
the walls of the outer body and the ground.
Consequently, a number of thermal circulation models can be realized: if the inner
receiving space is separated laterally and at the top from the surrounding
intermediate space, an air circulation taking place exclusively in this inner
installation space is established - initiated by the waste heat of the active electrical
elements arranged in the inner receiving space, such as lost heat of the control
electronics etc. Heat is extracted from this circulation, in that the circulation heats
up the paneling of the installation frame, and this paneling is cooled in that, on the
outside, in the intermediate space between the paneling of the installation frame
and the outer body, air from the ambience flows in at the bottom and flows out
again at the top, possibly via the upper intermediate part and possibly by means of
active cooling by the intermediate part (a fan which accelerates the circulation
between the outer body and the inner, paneled installation frame partitioned off
from the intermediate space with respect to the outer body, or a heat exchanger or
cooling element in the paneling of the inner installation frame, in particular the
upper termination of the latter, although the partitioning off between the inner
installation space and the outer intermediate space between the paneled
installation frame and the body is to be retained).
If the inner receiving space is only partitioned off at the sides from the intermediate
space by means of paneling, this inner circulation also includes the cover space,
that is to say the space between the cover of the outer body and the remaining
parts of the body. In general, however, the installation frame is also paneled at the
top and is consequently partitioned off both at the top and at the sides, and
consequently completely, from the outer intermediate space, that is to say the
space between the paneling of the installation frame and the surrounding body.
The procedure during the installation of the electrical cabinet on the base box may
also vary:
If the electrical cabinet is not intended to enclose the base box, but merely to rise
up from the upper side of the latter, simple mounting - firstly of the installation
frame - is self-evident, it generally been the case that the outer body and/or the
interior fitting out of the installation frame, including the subrack, only takes place
subsequently.
If, on the other hand, the electrical cabinet is intended to enclose the base box
projecting above the surface of the ground, different procedures are possible:
If the buried cables, which can only be bent with difficulty, protrude out above the
upper side of the base box, it is preferred for the electrical cabinet, that is to say
firstly its installation frame, to be slipped over the base box from above.
If, however - which is not generally the case - the base box is larger in terms of
base area than the clear interior space of the installation frame, this is not
possible.
It is then appropriate for the installation frame to be pushed horizontally over the
upwardly projecting part of the base box, it being necessary for this purpose for
one of the lower cross struts of the installation frame first to be detached from the
latter and also to remain removed if the base area of the base box is greater than
the clear interior space between the fitted lower cross struts of the installation
frame.
If an existing base box, projecting above the surface of the ground, still does not
comprise predetermined breaking elements between the part of the base box
projecting out of the ground and the part located in the ground, such
predetermined breaking elements must be provided when the electrical cabinet is
fastened to the base box, for example between the mounting plates and the base
box.
c) Exemplary embodiments
Embodiments according to the invention are described in more detail below by
way of example and with reference to the figures, in which:
figure 1 shows basic representations of the installation versions in section,
figure 2 shows thermal circulations in the electrical cabinet in section,
figures 3 show individual views of the installation state without an outer body,
figures 4 show individual views according to figures 3 with an outer body,
figure 5 shows a perspective view of the state of figure 3,
figure 6 shows the perspective view in a further-advanced installation state,
figure 7 shows a perspective view of the partly installed switch cabinet on a
base according to figure 1 b and
figure 8 shows a perspective view of the switch cabinet according to figure 7
after complete installation.
Figures 1 and 2 show electrical cabinets 1, considered with a viewing direction into
the depth 40 of these electrical cabinets, in each case cut open along the
transverse direction 20, the direction of greatest horizontal extent of these
electrical cabinets.
Figure 1a shows the installation diagram of a base box 2a with a superstructure.
This base box 2a rises up partly upward above the surface of the ground 22. The
projecting part 2a1 is usually connected by means of predetermined breaking
elements 21 with respect to the part 2a" embedded in the ground, in order that the
tearing off of the upper part 2a' when it is driven into by a car does not also
damage or displace the part 2a" lying in the ground.
The base box 2a is usually open at the top and bottom and serves for leading out
the buried cables 8, which are laid underground, with their free end upward in the
direction of the electrical cabinet to be provided there, and also as a stable
foundation for the electrical cabinet to be provided on it.
Furthermore, additional elements, for example batteries 16, which are intended to
ensure a power supply to the control components of the electrical cabinet over a
certain time even in the event of a power failure, may be accommodated in the
interior of the base box, in particular within its upper part 2a'.
The electrical cabinet 1 in this case encloses the upper part 2a of the base box 2a,
protecting upward above the surface of the ground 22. The inner installation
frame 6 of the electrical cabinet 1 is generally made up of individual struts, which
run along the outer edges of the cubic form of this installation frame 6 and usually
comprise metal profiled struts, for instance made of aluminum. The interior space
of this installation frame 6 serves for receiving subassemblies such as fuses and
controllers in at least part of this receiving space. In the case of base boxes 2a
projecting above the surface of the ground 22, the upper part 2a' of the base box
2a is received in the lower receiving space 42 of the installation frame 6, which is
partitioned off for this purpose, for example by means of cross struts 34a,b running
in the transverse direction, from the upper receiving space 41, which serves for
receiving the subassemblies of the electrical cabinet.
As figure 1a shows, the installation frame 6 with its middle cross struts 34a,b,
running between the upper and lower ends, and the mounting plates 45 running
therein in the direction of the depth 40, are mounted on the upper side of the upper
part 2a' of the base box 2a, so that the vertical corner struts of the installation
frame extend alongside the upper part 2a' of the base box 2a further downward to
just above the surface of the ground. The mounting plates 45 are fastened to the
cross struts 34, set back inward from the free ends of the latter to such an extent
that they still lie in the region of the transverse extent of the base box 2a.
In the region of the height of the upper receiving space 41, subracks 9 in the form
of vertically running struts are screwed between the upper cross struts 35c,d and
the middle cross struts 34a,b, on which subracks there can be arranged carrier
plates 11, which carry the individual electronic or electromechanical
subassemblies. Slipped over this installation frame 6 - possibly paneled as
described later - is the outer body 3, which represents the outer protection, in
particular weather protection, of the electrical cabinet and also serves for its
climatic control, as described below. The outer body 3 often consists of plastic
and is in this case - as figures 4 and 6 show in particular - made up of individual
panels for the rear wall, side walls, doors and cover.
At the height of the middle cross struts 34, the upper receiving space 41 may be
additionally separated from the lower receiving space 42 by a bottom sheet 18,
which however must have the appropriate clearances for the buried cables 8.
The installation diagram of figure 1b is based in comparison on a base box 2b
which on the one hand ends with its upper side at the height of the surface of the
ground 22, that is to say it is completely within the ground, and has in addition a
different, generally larger, base area extent, at least in the transverse direction 20.
In this case, the electrical cabinet 1 is fastened with its lowermost horizontal struts
on the upper side of the base box 2b sunken completely in the ground, the
mounting plates 45 in turn being fastened in the direction of the depth 40 between
the front and rear, lower cross struts 35a,b, to be precise set outward in the
transverse direction 20 to such an extent that they rest on the ends of the upper
side of the base box 2b.
In the middle region, the installation frame 6 is in this case preferably stiffened as
before by means of middle cross struts 34a,b, but now the receiving space 42
located below these middle cross struts can optionally likewise be used for
receiving electrical subassemblies, including for receiving batteries 16. In this
lower receiving space there may also be an element fastened horizontally to the
installation frame 6, for fixing the position of the buried cables, for example a cable
fastening rail 26.
The arrangement of the remaining elements in relation to the surface of the ground
22 is the same as in the case of figure 1a. What is different is the arrangement of
the predetermined breaking elements 21, which are now arranged between the
mounting plates 45 and the base box 2b.
Figure 2 shows the form of installation according to figure 1b in the same sectional
representation but with regard to the air circulation now taking place within the
electrical cabinet 1, caused by uneven heating up:
On the one hand, the outer body 3 is in this case exposed to solar radiation. On
the other hand, arranged at least in the upper receiving space 41 are electrical
subassemblies 12, which are energy consumers and produce waste heat, and
consequently heat up the receiving space 41.
If the upper receiving space 41 is open with respect to the lower receiving space
42, that is to say in between there are only the cross struts 34a,b on the sides, a
vertical circulation in which the heated air rises, cools on the upper frame cover 26
and falls downward, is produced in the interior of the installation frame 6,
extending over both receiving spaces 41, 42.
Separately from this there exists an air flow in the surrounding intermediate space
19 between the installation frame 6 and the outer body 3, if the installation frame 6
is paneled for this purpose on the outside with plastic panels or other continuous
panels. If this paneling is additionally intended to offer EMC shielding, a metallic
covering, or at least fitting out with metal foil, is necessary for this.
For the interior space of the installation frame 6 to be accessible, the paneling of
this installation frame 6 must likewise have inner doors or flaps.
The air flow in the intermediate space 19 is not a closed circulation, but instead the
air penetrates here through inlet openings 27 in the lower region of the body 3 into
the intermediate space 18, for example - as represented on the right-hand side of
figure 2 - in that the outer walls of the body 3 do not quite reach down to the
ground.
In the upper region of the body, there are air outlet openings 13, either between
the cover 5 and the side walls of the body 3 or in an upper intermediate part 7,
which is set between the cover 5 and the rest of the body 3, and may have
additional active or passive cooling or heating components.
Figures 3 show the installation situation of figure 1a, that is to say with the base
box 2a rising up partly above the surface of the ground 22, with not yet completed
fastening of the installation frame 6 to the base box 2a, in rear view (figure 3a),
side view (figure 3b), front view (figure 3c) and plan view (figure 3d).
As figures 3a-c show in particular, middle cross struts 34a,b are in this case fitted
between the vertical struts of the installation frame 6, such that they run in the
transverse direction 20. Fastened to the installation frame, in particular to these
cross struts 34a,b, are mounting plates 45, which run from the front cross strut 34a
to the rear cross strut 34b, that is to say in the direction of the depth 40 of the
electrical cabinet 1. The height of the cross struts 34a,b is chosen such that, when
the mounting plates 45 are mounted on the upper side of the upper part 2a1 of the
base box 2a, the installation frame 6 ends just above the surface of the ground 22.
To achieve this positioning, one of the lower cross struts according to figures 3
and also the analogous, three-dimensional representation of figure 5, for example
the front lower cross strut 35a, is removed from the installation frame 6 and the
installation frame 6 is then pushed horizontally along the ground or, raised just
slightly, over the upper part 2a' of the base box 2a in such a way that, as
described, the mounting plates 45 rest on the upper side of the base box 2a.
While this pushing-over has only partly taken place in figures 3 and 5, figure 6
shows a later installation state, in which the pushing-over has been completed and
the previously removed lower cross strut 35a has also been fastened again to the
installation frame 6, and side walls and the rear wall of the body 3 and also the
cover 5 have already been mounted on the outer side of the installation frame 6, at
a distance, with an upper intermediate part 7 being arranged between the cover 5
and the remaining body 3, permitting air outlet openings 13 for the air to leave
from the intermediate space 19 between the outer body 3 and the inner installation
frame 6.

The representations of figures 4, the individual views of which correspond with
regard to the viewing direction to those of figures 3, show yet a further installation
state in comparison with the latter, in which the outer body 3 has also already
been completed by adding a door 4 and a front panel 14.
Figure 7 shows the partly completed electrical cabinet 1, mounted on a base box
2b. The main difference in comparison with the representations of figures 5 and 6
is that, in the case of figure 7, the electrical cabinet 1 is mounted with its lower
edge on the upper side of a base box 2b, and consequently overall in accordance
with the basic representation of figure 1b, since this base box 2b is fitted
essentially completely in the ground, so that the upper edge of the base box 2b is
at the same time the surface of the ground 22. As can be seen, the base box 2b
comprises a grid as a base, on which the base structure rises up, and has an outer
surrounding of its own in the upper region, near the surface of the ground 22.
On the - open - upper side of this base box 2b there is fastened, according to
figure 7, the installation frame 6 of the electrical cabinet 1, in which - as a
difference from figures 5 and 6 - the mounting plates 45, which in the side regions
extend through from the front cross strut to the rear cross strut, are not fastened to
the cross struts 34a,b, fastened in the middle region of the installation frame 6, but
to the lower cross struts 35a,b.
This produces a height of the installation frame 6, and consequently also of the
later electrical cabinet 1, above the surface of the ground 22 which corresponds to
the other solution according to figures 5 and 6, but, according to figure 7, the lower
receiving space 42 is also available for receiving electrical components.
It is nevertheless also the case with the solution according to figure 7 that the
subracks 9 extend only from the middle cross struts 34 to the upper cross struts.
In figure 7, the upper sides and the side faces and also the rear side are provided
with a paneling 46 of continuous panels, preferably made of an EMC-shielding
material such as aluminum for instance, which are fastened between the struts of
the installation frame 6.
Figure 8 shows the structure of the electrical cabinet at a more advanced stage of
completion in comparison with figure 7, that is to say with a complete body 3,
surrounding the installation frame . 6, including an upper intermediate part 7
mounted thereupon, with already described air outlet openings 13 at the periphery
and a cover 5 closing off the upper intermediate part 13 [sic] at the top.
The front side of the electrical cabinet is in this case closed over the height of the
upper receiving space 41, that is to say from the front middle cross strut 34a to the
front upper cross strut, by a door 4 hinged on the right, while the lower front
region, that is to say the height of the lower receiving space 42, is closed by
means of a front panel 14, which may preferably be swung open forward by
means of hinges in the lower region, along the lower edge.
If an EMC shielding of the electrical cabinet 1 is desired, the front panel 14 and
door 4 must likewise provide EMC shielding and, if produced from plastic,
preferably have an inner covering of EMC-shielding material, such as aluminum
for instance.
LIST OF DESIGNATIONS
1 electrical cabinet 23 battery
2 base box 24 cable lead-through opening
3 body 25 lead-through plate
4 door 26 frame cover
5 cover 27 air inlet opening
6 installation frame 28 cable fastening rail
7 upper intermediate part 29 row of holes
8 buried cable 30 rib
9 subrack 31 false bottom
10 vertical longitudinal 32 edge
direction 33 connecting element
11 carrier plate 34a, 34b cross struts
12 electrical subassembly 35a, 35b cross struts
13 air outlet opening 36 cooling ribs
14 front panel 37 drive
16 batteries 38 bucket wheel
18 bottom sheet 39 blade
19 intermediate space 40 depth
20 transverse direction 41 upper receiving space
21 predetermined breaking 42 lower receiving space
elements 44 fastening position
22 surface of the ground 45 mounting piate
46 paneling
WE CLAIM
1. A device for configuring an electrical cabinet (1), in
particular for outdoor use, the cabinet accommodating distribution
equipment including means for power supply, cable terminating and cable
connecting, the cabinet (1) having :
- an outer body (3),
- an inner installation frame (6),
- a paneling (46) for the inner installation frame (6),
which comprises:
- a plurality of base boxes (2a, b) dimensioned differently with
regard to base area and projection above the ground,
- mounting plates (45) for connecting the installation frame (6) to a
base box (2a, b), and
- a plurality of fastening positions for the mounting plates (45) on
the installation frame (6).
2. The device as claimed in claim 1, wherein the base boxes (2a, b) comprise
at least one first base box (2a) projecting above the surface of the ground
and a second base box (2b) ending level with the ground.

3. The device as claimed in one of the preceding claims, wherein the
installation frame (6) has between its upper and lower ends at least two
first cross struts (34) running at the same height in the transverse
direction (20), the greater horizontal dimension of the electrical cabinet
(1), and, in particular, the fastening positions (44) for fastening the
mounting plates (45) are arranged in the path of the first cross struts
(34).
4. The device as claimed in one of the preceding claims, wherein the
mounting plates (45) run in the direction of the depth (40) of the electrical
cabinet (1) and connect the first pair of cross struts (34a, b), lying parallel
and horizontal next to each other, to each other and, in particular, are
displaceable along the first pair of the first cross struts (34a, b).
5. The device as claimed in one of the preceding claims, wherein the vertical
position of the first pair of the first cross struts (34a, b) on the installation
frame (6) is variable.
6. The device as claimed in one of the preceding claims, wherein the
installation frame (6) has a first pair of a second cross struts (35a, b) at
the upper and lower ends and at least one of the first pair of the second
cross struts (35a) can be detached from the installation frame (6).
7. The device as claimed in one of the preceding claims, comprising
predetermine breaking elements (21).

8. The device as claimed in one of the preceding claims, wherein the
predetermined breaking elements (21) are fastened to the mounting
plates (45), in particular are formed in one piece together with the
mounting plates (45).
9. The device as claimed in one of the preceding claims, wherein the
predetermined breaking elements are arranged in the base box (2a, b), in
particular in the first base box (2a) rising up above the surface of the
ground (22) between an upper part (2a') and a part (2a") lying below the
surface of the ground.
10.The device as claimed in one of the preceding claims, comprising subracks
(9) for fastening to the installation frame (6), in particular to the inner
surface of the frame (6), and the subracks (9) comprise in particular
vertically running profiled struts.
11.The device as claimed in one of the preceding claims, wherein the
subracks (9) extend in the vertical direction along the upper receiving
space (41), for example, from the first pair of the first cross struts (34a,
b) to the second pair of the first cross struts (34c, d),
12.The device as claimed in one of the preceding claims, wherein the
installation frame (6) has a clear width in the transverse direction (20)
which is grater than the width of the largest base box (2a,b) in this
direction.

13.The device as claimed in one of the preceding claims, wherein the
installation frame (6) has a depth, measured from the inside edge of the
one of the first of the second cross struts (35a,b) to the opposite outside
edge in the direction of the depth (40), which is greater than the depth of
the deepest base box (2a,b) in the direction of the depth (40).
14.The device as claimed in one of the preceding claims, comprising a
bottom sheet (18) with cable lead-through openings (24), in particular for
fastening to the first and second cross struts (34,35), in particular the first
pair of the second cross struts (35a, b), running transversely in the
direction of the depth (40).
15.The device as claimed in one of the preceding claims, wherein the
paneling (46) for the installation frame (6) can be fastened on one of the
outer surfaces and/or inner surfaces of the installation frame (6) and seals
at least the peripheral surfaces of the installation frame (6).
16.The device as claimed in one of the preceding claims, wherein the
paneling (46) comprises a frame cover (26), which partitions off the upper
receiving space (41) within the installation frame (6) from the interior
space lying thereabove of the outer body (3).
17.The device as claimed in one of the preceding claims, wherein the outer
body (3) surrounds the inner installation frame (6) at a distance on the
outside and comprise air inlet openings (27) in the lower region.

18.The device as claimed in one of the preceding claims, wherein the outer
paneling (46) comprises individual panels for the side walls and rear wall
and also a front wall with at least one door (4) and a cover (5).
19.The device as claimed in one of the preceding claims, wherein an upper
intermediate part (7), in particular with air outlet openings (13) to the
outside, si provided between the cover (5) and the lower part of the body
(3).
20.The device as claimed in one of the preceding claims, wherein the lower
part of the body (3), for example, the part of the body (3) lying under the
intermediate part (7) or the cover (5), forms a closed housing when the
door (4) is closed.
21.The device as claimed in one of the preceding claims, comprising
connecting elements (33) for connecting the outer body (3) to the inner
installation frame (6).
22.The device as claimed in one of the preceding claims, wherein the parts of
the outer body (3) consist of plastic, in particular panel-shaped plastic
elements, in particular foamed plastic, in particular foamed polycarbonate.
23.The device as claimed in one of the preceding claims, wherein the inner
installation frame (6) comprises profiled bars, in particular of metal, which
are in particular screwed to one another.
24. A method for configuring an universally adaptable electrical cabinet (1), in
particular for outdoor use, the cabinet accommodating distribution
equipment including means for power supply, cable terminating and cable
connecting the method comprising the steps of:
- fastening the first pair of the first cross struts (34a, b) to the
remaining installation frame (6) at a defined height,
- arranging the mounting plates (45a, b) at the fastening positions
(44a, b) either on the first pair of the first cross struts (34a, b) or
the first pair of the second cross struts (35a, b),
- positioning the installation frame (6) fitted out in this way with
respect to the fitted base box (2a, b),
- fastening the mounting plates (45) on the upper side of the base
box (2a, b).
25.The method as claimed in claim 24, wherein, before arranging the
mounting plates (45), the predetermined breaking elements (12) are
fastened to the mounting plates (45).
26.The method as claimed in one of the preceding method claims, wherein,
before the positioning of the installation frame (6) with respect to the
base box (2a, b), the subracks (9) are fastened, in particular screwed,
second pair of the second between the cross struts (35c,d) and the first
pair of first cross struts (34a, b) or the first pair of second cross struts
(35a, b).
27.The method as claimed in one of the preceding method claims, wherein,
the installation frame (6) is positioned with respect to the first base box
(2a) by pushing over in the vertical direction from above.
28.The method as claimed in one of the preceding method claims, wherein,
the installation frame is positioned with respect to the first base box (2a)
in that the front, the cross strut (35a) is removed from the mounting
frame (6) and the mounting frame (6) is pushed in the horizontal
direction, in the direction of the depth (40), over the first base box (2a) or
the upper part (2a') of the latter, projecting above the surface of the
ground.
29.The method as claimed in one of the preceding method claims, wherein,
one of the paneling (46) and the outer body (3) is fastened to the
installation frame (6) after the installation frame (6) has been fitted out
with the electrical, electronic and mechanical subassemblies received in it
in the interior of the installation frame (6).
The invention relates to a device for configuring an universally adaptable
electrical cabinet (1), in particular for outdoor use, the cabinet
accommodating distribution equipment including means for power supply,
cable terminating and cable connecting, the cabinet (1) having an outer body
(3), an inner installation frame (6), a paneling (46) for the inner installation
frame (6), which comprises a plurality of base boxes (2a, b) dimensioned
differently with regard to base area and projection above the ground,
mounting plates (45) for connecting the installation frame (6) to a base box
(2a, b), and a plurality of fastening positions for the mounting plates (45) on
the installation frame (6).

Documents:

983-KOLNP-2003-ASSIGNMENT.pdf

983-KOLNP-2003-CORRESPONDENCE.pdf

983-KOLNP-2003-FORM 13.pdf

983-kolnp-2003-granted-abstract.pdf

983-kolnp-2003-granted-claims.pdf

983-kolnp-2003-granted-correspondence.pdf

983-kolnp-2003-granted-description (complete).pdf

983-kolnp-2003-granted-drawings.pdf

983-kolnp-2003-granted-examination report.pdf

983-kolnp-2003-granted-form 1.pdf

983-kolnp-2003-granted-form 18.pdf

983-kolnp-2003-granted-form 2.pdf

983-kolnp-2003-granted-form 3.pdf

983-kolnp-2003-granted-form 5.pdf

983-kolnp-2003-granted-gpa.pdf

983-kolnp-2003-granted-reply to examination report.pdf

983-kolnp-2003-granted-specification.pdf

983-kolnp-2003-granted-translated copy of priority document.pdf

983-KOLNP-2003-PA.pdf

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Patent Number

225446

Indian Patent Application Number

983/KOLNP/2003

PG Journal Number

46/2008

Publication Date

14-Nov-2008

Grant Date

12-Nov-2008

Date of Filing

31-Jul-2003

Name of Patentee

KRONE GMBH.

Applicant Address

BEESKOWDAMM 3-11, 14167 BERLIN

Inventors:

#	Inventor's Name	Inventor's Address
1	IRMER, GUNTER	LIEBENWALDER STR. 8 13055 BERLIN

PCT International Classification Number

H02B 1/50

PCT International Application Number

PCT/EP2002/00248

PCT International Filing date

2002-01-12

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	10105993.0	2001-02-09	Germany