Busbar installation system for electrical switchgear with enhanced fixed auxiliary equipment capabilities

Abstract

A mounting system (1) for busbars (L1..L3,N) of an electrical switchgear (12) is disclosed. The mounting system includes: a plurality of retainer rails (2a,2b); connecting profiles (3a..3d) that interconnect the retainer rails (2a,2b) and create a distance between them; and the mounting system includes: a plurality of busbar retainers (4a,4b) configured to receive the busbars (L1..L3,N) and arranged within the retainer rails (2a,2b). At least one of the connecting profiles (3a..3d) has at least one slot (10) extending parallel to a longitudinal extension of the connecting profile (3a..3d), wherein the at least one slot (10) has an undercut in its cross-section. In addition, an arrangement (6) and an electrical switchgear (24) having multiple busbars (L1..L3,N) are disclosed, as well as an installation system (1) for the aforementioned multiple busbars.

Description

Technical Field

[0001] This invention relates to a busbar mounting system for an electrical switchgear, comprising a plurality of retainer rails; connecting profiles that interconnect the retainer rails and create a distance between them; and the mounting system comprising a plurality of busbar retainers configured to house the busbars and arranged within the retainer rails. Furthermore, this invention relates to an arrangement having a plurality of busbars and a busbar mounting system, by which the busbars are secured. Finally, this invention relates to an electrical switchgear comprising a plurality of busbars, at least one switching device electrically connected to the busbars, and a busbar mounting system by which the busbars are held in place within the electrical switchgear. Background Technology

[0002] Busbar mounting systems are known in principle in the prior art. Unfortunately, the usability of existing mounting systems is poor when additional equipment needs to be installed near the busbar. Typically, simple cable ties are used for such installations, or additional holes are drilled in the mounting system to secure the additional equipment with screws. However, this can lead to serious problems if the drilled portion of the mounting system is made of metal, as conductive shavings can enter the switchgear uncontrollably and subsequently cause short circuits and arc flashes during switchgear operation. On the other hand, considering the vibrations that may occur within the switchgear, the ability of cable ties to hold additional equipment in a fixed position for extended periods is generally limited. Summary of the Invention

[0003] Therefore, the object of the present invention is to provide an improved installation system, an improved arrangement having such an installation system, and an improved switchgear. Specifically, a solution highly suitable for installing additional equipment near the busbar should be proposed.

[0004] The object of the present invention is achieved by an installation system disclosed in the opening paragraph, wherein at least one of the connecting profiles has at least one slot extending parallel to a longitudinal extension of the connecting profile, and wherein the at least one slot has an undercut in its cross-section. In other words, at least one of the connecting profiles is particularly capable of including a T-shaped slot extending parallel to a longitudinal extension of the connecting profile.

[0005] Furthermore, the object of the present invention is achieved by an arrangement having a plurality of busbars and a busbar mounting system, wherein the busbars are fixed by the mounting system.

[0006] Finally, the object of the present invention is achieved by an electrical switchgear comprising a plurality of busbars, at least one switching device electrically connected to the busbars, and a busbar mounting system, wherein the busbars are held in place within the electrical switchgear by the mounting system.

[0007] By using at least one slot, an auxiliary device can be installed into at least one connecting profile of the connecting profile, and thus into the vicinity of the busbar. The auxiliary device can be a current sensor, voltage sensor, power sensor, temperature sensor, wireless transmitter, wireless receiver, etc. Additional mounting devices, such as T-head bolts, slot nuts, snap-fit ​​pins, snap-fit ​​rivets, expansion rivets, etc., can be used to install the auxiliary device into the at least one slot. The auxiliary device can be used to monitor the busbar and, in particular, wirelessly transmit sensor data to a receiving device. As mentioned above, for example, the current through the busbar, the voltage of the busbar, the power transmitted by the busbar, and the temperature of the busbar can be monitored (especially non-contact monitoring via infrared sensors). Additionally, the auxiliary device can also receive data from control measuring devices (e.g., commands).

[0008] Therefore, at least one of the connecting profiles forms a device that can be flexibly equipped with additional equipment, especially when the installation system is assembled and particularly when the installation system is constructed within a switchgear. Thus, the proposed installation system is particularly suitable for later replacement of the switchgear with additional equipment. Furthermore, there is no risk of conductive chips entering the switchgear uncontrollably, and the proposed connecting profile forms a suitable device to hold the additional equipment in a fixed position within the switchgear for an extended period of time.

[0009] Other advantageous embodiments are disclosed in the claims, description, and drawings.

[0010] Advantageously, at least one of the connecting profiles

[0011] -Having two slots and a cross-section that is rotationally symmetrical about a 180° rotation angle, or

[0012] - It has four slots and a cross-section that is rotationally symmetrical about a 90° rotation angle.

[0013] Therefore, there are multiple possibilities for installing additional equipment onto the connecting profile, and the connecting profile can be arranged in multiple locations within the installation system without altering its function. In the case of four slots, an X-shaped profile is formed. X-shaped profiles in various shapes and sizes are commercially available. Therefore, the proposed installation system can be implemented quickly.

[0014] Preferably, the at least one slot is disposed on a side surface of at least one of the connecting profiles, the side surface pointing outward from the busbar retainer or pointing transversely to the longitudinal extension of the retainer guide rail. Therefore, the slot is easily accessible even after the mounting system is assembled, and also secures the busbar. Typically, in the assembled state of the mounting system, space near the side surface is available for additional equipment.

[0015] Furthermore, the outer profile of the cross-section of at least one of the connecting profiles is rectangular, and in particular square. Therefore, a flat mounting surface is formed on the connecting profile that can be used to mount additional equipment.

[0016] Advantageously,

[0017] - The retainer guide rail is a pillar profile with an H-shaped or U-shaped cross-section, and

[0018] - The width of the rectangular cross section of at least one of the connecting profiles matches the internal dimensions of the H-shaped or U-shaped cross section of the retainer guide.

[0019] In this embodiment, the width of the rectangular cross-section of at least one of the connecting profiles is slightly less than or slightly greater than the internal dimension of the H-shaped or U-shaped cross-section of the retainer guide. Therefore, rotation of the connecting profile is prevented even if only a single connecting profile screw is used to secure the connecting profile, or even if mounting devices for the connecting profile, such as connecting profile screws or connecting profile rivets, are accidentally dropped from the mounting system during operation. Thus, the mounting system is highly fault-tolerant, and the retainer guide acts as a component clamp during assembly, thereby simplifying the manufacture of the mounting system. This is especially true if the width of the connecting profile is slightly greater than the internal dimension of the H-shaped or U-shaped cross-section of the retainer guide. The connecting profile is then held in the retainer guide by friction. Therefore, the connecting profile will not accidentally detach from the retainer guide before it is finally secured to the retainer guide by mounting devices, such as connecting profile screws or connecting profile rivets. This is particularly useful in cases where the connecting profile is installed upside down onto the retainer guide. However, this can also be useful when the width of the connecting profile is slightly smaller than the internal dimensions of the H-shaped or U-shaped cross-section of the retainer guide. In this case, the connecting profile can be easily assembled into the retainer guide.

[0020] In addition, the advantage is

[0021] - At least one of the connecting profiles has a central hole extending along the longitudinal axis of at least one of the connecting profiles, and

[0022] - Install at least one of the connecting profiles to the retainer guide by screwing a self-cutting connecting profile screw into the center hole.

[0023] Using self-cutting profile screws offers several advantages. First, there's no need to cut separate threads in the profile, as the self-cutting screw itself cuts the threads. Second, even if the mounting system experiences vibrations such as those found in switchgear, the self-cutting screw is unlikely to unscrew itself. Therefore, additional screw tightening is unnecessary. Third, standard-length screws can be used with profiles of various lengths, saving material costs. Fourth, self-cutting screws can be manufactured shorter than screws secured with nuts. Therefore, even if the profile screw detaches from the mounting system, the likelihood of arcing or short circuits caused by the profile screw is lower. This is based on the simple reason that self-cutting screws are shorter than screws secured with nuts and cannot bridge large gaps between conductors under voltage.

[0024] It is also advantageous if at least one of the connecting profiles is an extruded or pultruded profile and made of aluminum or plastic. Specifically, the connecting profile can be made of fiber-reinforced resin, and especially by extrusion or pultrusion. The advantage of extrusion and pultrusion is that areas of different fiber densities can be confined within the connecting profile. Therefore, the connecting profile can be manufactured more robustly where needed. A further advantage of extrusion and pultrusion is that the connecting profile can be produced in standard lengths (several meters) and then cut as needed to fit any application. Therefore, the installation system can be easily adapted to different busbar heights. The same advantage applies if aluminum is used as the material for the connecting profile.

[0025] Therefore, a further advantage of the proposed solution is that a wide range of bus sizes and / or bus configurations can be covered by the installation system, although the components used remain substantially the same for all these bus sizes and / or bus configurations. Thus, the flexibility of the installation system is increased at a lower cost compared to prior art systems.

[0026] This is especially true when all connecting profiles have the same cross-section, which further reduces material consumption.

[0027] Furthermore, it is advantageous if the retainer rail is made of plastic and the bus retainer is made of metal. Advantageously, the retainer rail provides electrical insulation and thus also avoids induced eddy currents caused by current flowing through the bus. The non-ferrous material of the proposed retainer rail naturally avoids closed ferrous material loops around the bus. This is not the case with prior art retainer rails made of metal, where special measures must be taken to avoid such ferrous material loops and avoid or at least limit the induced currents or eddy currents. Therefore, this embodiment is particularly advantageous if the connecting profile is made of aluminum, since the plastic retainer rail provides insulation anyway.

[0028] This is another approach commonly used in the prior art, where the retainer rail is made of metal and the bus retainer is made of plastic. However, the advantage of choosing materials in the proposed manner is that the bus retainer is more robust and can easily withstand the (electromagnetic) forces generated in the switching equipment. Because the contact surface between the bus retainer and the retainer rail is relatively large, these larger forces can be easily transmitted from the bus retainer to the retainer rail, even though the retainer rail is made of plastic.

[0029] Finally, it is advantageous if the retainer rail is embodied in an extruded or pultruded profile. Essentially, this also applies to the matter described relative to extruded or pultruded connecting profiles. Specifically, the retainer rail can be made from fiber-reinforced resin, particularly through extrusion or pultrusion. As mentioned, the advantage of extrusion and pultrusion is that areas of varying fiber densities can be confined within the retainer rail, and therefore, the retainer rail can be manufactured more robustly where needed. A further advantage of extrusion and pultrusion is that the retainer rail can also be produced in standard lengths (several meters), which can then be cut as needed to suit any application. Therefore, the mounting system can be easily adapted to different numbers of busbars. Thus, together with standard length connecting profiles, the mounting system can be easily adapted to different heights and different numbers of busbars. Attached Figure Description

[0030] The invention will now be described in more detail below with reference to specific embodiments, however, the invention is not limited to these embodiments.

[0031] Figure 1 A perspective view shows the busbar installation system in the busbar installation state;

[0032] Figure 2 Shown in exploded view Figure 1 The installation system;

[0033] Figure 3 A square cross-section of a connecting profile with four slots is shown;

[0034] Figure 4 A rectangular cross-section of a connecting profile with a slot is shown;

[0035] Figure 5 A rectangular cross-section of a connecting profile with two slots is shown;

[0036] Figure 6 A circular cross-section of a connecting profile with a slot is shown;

[0037] Figure 7 An exploded view showing how a temperature sensor can be mounted to the connecting profile;

[0038] Figure 8An exploded view showing how the cable clamp can be installed onto the connecting profile;

[0039] Figure 9 The temperature sensor and cable clamp are shown in their installed state.

[0040] Figure 10 An exploded view showing how a current sensing device can be mounted onto a connecting profile;

[0041] Figure 11 The current sensing device is shown in its installed state;

[0042] Figure 12 A preferred side surface on the connecting profile for mounting additional equipment is shown, and

[0043] Figure 13 A partial side view of the switching equipment is shown. Detailed Implementation

[0044] Generally, identical or similar parts are designated with the same / similar names and reference numerals. Features disclosed in the specification apply to parts that have the same / similar names and reference numerals. Indications of orientation and relative position are related to the associated drawings, and therefore, indications of orientation and / or relative position must be modified accordingly in different drawings depending on the specific circumstances.

[0045] Figure 1 and Figure 2 The installation system 1 for busbars L1, L3, and N of the electrical switchgear is shown in perspective view. Figure 1 The installation view shows the installation of system 1, and Figure 2 Displayed in an exploded view.

[0046] Mounting system 1 includes two retainer rails 2a, 2b, connecting profiles 3a, 3b that interconnect the retainer rails 2a, 2b and create a distance between them, and the mounting system includes multiple bus retainers 4a, 4b configured to house buses L1...L3, N and arranged within the retainer rails 2a, 2b. In this example, there is a lower retainer rail 2a and an upper retainer rail 2b, as well as left connecting profiles 3a and right connecting profiles 3b. However, more retainer rails 2a, 2b and / or more connecting profiles 3a, 3b may also be present. Furthermore, mounting system 1 includes frame connectors 5a, 5b, through which the retainer rails 2a and the entire mounting system 1 can be secured to the frame of the switchgear. Mounting system 1, together with buses L1...L3, N, forms arrangement 6. In this example, buses L1...L3, N form the three phases and neutral of the AC system. However, other configurations are also possible.

[0047] Figure 2 This demonstrates how the components of installation system 1 can be interconnected. Specifically, bus retainers 4a and 4b are mounted to retainer rails 2a and 2b via bus retainer screws 7a and 7b, connecting profiles 3a and 3b are mounted to retainer rails 2a and 2b via connecting profile screws 8a and 8b, and frame connectors 5a and 5b are mounted to retainer rail 2a and switchgear frame via frame connector screws 9a and 9b.

[0048] Typically, at least one of the connecting profiles 3a and 3b has at least one slot 10 extending parallel to the longitudinal extension of the connecting profiles 3a and 3b, wherein the at least one slot 10 has an undercut in its cross-section. In other words, at least one of the connecting profiles 3a and 3b may specifically include a T-shaped slot extending parallel to the longitudinal extension of the connecting profiles 3a and 3b.

[0049] In this example, both connecting profiles 3a and 3b have the same cross-section. Therefore, any technical disclosure related to the left connecting profile 3a is also related to the right connecting profile 3b, and vice versa. Thus, the characteristics of connecting profiles 3a and 3b can be explained by using only connecting profile 3a. However, in principle, connecting profiles 3a and 3b may also have different cross-sections.

[0050] Figure 3 Showing the use of Figure 1 A detailed view of the cross-section of the connecting profile 3a in the mounting system 1. The connecting profile 3a has four slots 10 and a cross-section that is rotationally symmetrical about a 90° rotation angle. Therefore, there are multiple possibilities for mounting additional equipment to the connecting profile 3a. However, other forms are also possible. For example, Figure 4 An alternative cross-section of the connecting profile 3b with only one slot 10 is shown, and Figure 5 An embodiment of a connecting profile 3c having two slots 10 and a cross-section that is rotationally symmetrical about a rotation angle of 180° is shown.

[0051] The outer contour of the cross-section of the connecting profiles 3a..3c is rectangular or square. Therefore, a flat mounting surface is formed on the connecting profiles 3a..3c that can be used to install additional equipment.

[0052] Another advantage of rectangular or external contours is that if the retainer guides 2a and 2b have an H-shaped cross-section (such as...), Figure 1 and 2 (In the example case) or U-shaped cross-section support profiles, and if the width of the rectangular cross-section of the connecting profiles 3a..3c matches the internal dimensions of the H-shaped or U-shaped cross-section of the retainer rails 2a, 2b, rotation of the connecting profiles 3a..3c relative to the retainer rails 2a, 2b can be avoided.

[0053] Advantageously, the width of the rectangular cross-section of the connecting profiles 3a..3c is slightly greater than the internal dimensions of the H-shaped or U-shaped cross-sections of the retainer rails 2a, 2b. The connecting profiles 3a..3c are then held in the retainer rails 2a, 2b by friction. Therefore, the connecting profiles 3a..3c will not unintentionally detach from the retainer rails 2a, 2b before being finally secured to the retainer rails 2a, 2b by mounting devices, such as connecting profile screws 8a, 8b or connecting profile rivets. This is particularly useful when the connecting profiles 3a..3c are installed upside down onto the retainer rails 2a, 2b. Thus, the retainer rails 2a, 2b act as an assembly fixture during assembly, which simplifies the manufacture of the mounting system 1.

[0054] However, this may also be useful when the width of the connecting profiles 3a..3c is slightly smaller than the internal dimensions of the H-shaped or U-shaped cross-section of the retainer rails 2a, 2b. In this case, the connecting profiles 3a..3c can be easily assembled into the retainer rails 2a, 2b.

[0055] The connecting profiles 3a...3c may also have an optional center hole 11 extending along the longitudinal axis of at least one of the connecting profiles 3a...3c, wherein the connecting profiles 3a...3c are mounted to the retainer rails 2a, 2b by self-cutting connecting profile screws 8a, 8b screwed into the center hole 11. This is Figure 3 and Figure 4 The cases shown are for connecting profiles 3a and 3b, but in principle, they also apply to the same situations. Figure 5 The connecting profile 3c shown is illustrated.

[0056] Using self-cutting connecting profile screws 8a and 8b offers several advantages. First, it eliminates the need to cut individual threads in the connecting profiles 3a to 3c, as the self-cutting connecting profile screws 8a and 8b themselves cut the threads. Second, even if the mounting system 1 is exposed to vibrations, such as those occurring within switchgear, the self-cutting connecting profile screws 8a and 8b are not easily unscrewed by themselves (see also...). Figure 13 Therefore, additional screw tightening can be omitted. Third, standard length connecting profile screws 8a and 8b can be used for connecting profiles 3a to 3c of various lengths. This saves material costs. Fourth, self-cutting connecting profile screws 8a and 8b can be manufactured shorter than screws secured with nuts. Therefore, even if connecting profile screws 8a and 8b detach from the mounting system 1, the likelihood of arcing or short circuits caused by connecting profile screws 8a and 8b is relatively low. This is based on the simple reason that self-cutting connecting profile screws 8a and 8b are shorter than screws secured with nuts and cannot bridge large gaps between conductors under voltage.

[0057] Because of the rectangular or square cross-section of the connecting profiles 3a...3c, rotation of the connecting profiles 3a...3c can be prevented even if only a single connecting profile screw 8a, 8b is used to fix the connecting profiles 3a...3c, or even if the mounting device for the connecting profiles 3a...3c, such as the connecting profile screw 8a, 8b or the connecting profile rivet, is accidentally dropped from the mounting system 1 during operation. Therefore, the mounting system 1 has a high degree of fault tolerance.

[0058] Figure 3 The connecting profile 3a is an X-shaped profile available in various shapes and sizes. Therefore, the proposed installation system 1 can be quickly implemented using this connecting profile 3a while providing the aforementioned advantages.

[0059] Connecting profiles 3a..3c have a rectangular or square outer profile. However, this is not a mandatory feature, and connecting profiles can also have different shapes. For example, Figure 6 A connecting profile 3d with a circular cross-section and a slot 10 is shown. It should also be noted that, although in Figure 5 and Figure 6 Although not depicted in the text, connecting profiles 3c and 3d may also have a center hole 11.

[0060] Typically, the connecting profiles 3a..3d and / or the retainer rails 2a, 2b are preferably embodied as extruded or pultruded profiles. Specifically, the connecting profiles 3a..3d and / or the retainer rails 2a, 2b may be made of metal (e.g., aluminum) or plastic.

[0061] The advantage of extrusion and pultrusion is that the connecting profiles 3a..3d and / or retainer rails 2a, 2b can be produced in standard lengths (several meters) and can then be cut as needed to fit any application. Therefore, the mounting system 1 can easily accommodate busbars L1..L3, N of different heights and / or different numbers of busbars L1..L3, N.

[0062] If the connecting profiles 3a..3d and / or the retainer rails 2a, 2b are made of fiber-reinforced resin, the advantage of extrusion and pultrusion is that areas with different fiber densities can be confined within the connecting profiles 3a..3d and / or the retainer rails 2a, 2b. Therefore, the connecting profiles 3a..3d and / or the retainer rails 2a, 2b can be manufactured more robustly where needed.

[0063] Therefore, a further advantage of the proposed solution is that, although the components used remain substantially the same for all these busbar sizes and / or busbar configurations, the mounting system 1 can cover a wide range of busbar sizes and / or busbar configurations. Thus, the flexibility of the mounting system 1 is increased at a lower cost compared to prior art systems. This is especially true when all connection profiles 3a, 3b have the same cross-section, further reducing material consumption.

[0064] It is particularly advantageous if the retainer rails 2a and 2b are made of plastic and the bus retainers 4a and 4b are made of metal. In this case, the retainer rails 2a and 2b provide electrical insulation and thus also prevent induced eddy currents caused by the current flowing through the busbars L1...L3, N. The non-ferrous material of the proposed retainer rails 2a and 2b naturally avoids closed loops of ferrous material around the busbars L1...L3, N.

[0065] Therefore, this implementation is particularly advantageous if the connecting profiles 3a..3d are made of aluminum, because the plastic retainer rails 2a, 2b provide insulation anyway. However, the busbar retainers 4a, 4b are relatively robust and can easily withstand the (electromagnetic) forces generated in the switchgear. Because the contact surface between the busbar retainers 4a, 4b and the retainer rails 2a, 2b is relatively large, these larger forces can be easily transmitted from the busbar retainers 4a, 4b to the retainer rails 2a, 2b, even though the retainer rails 2a, 2b are made of plastic.

[0066] Figures 7 to 11 Various examples of how an additional device can be mounted to a connecting profile 3a..3d using at least one slot 10 are now shown.

[0067] In detail, Figure 7 This illustrates how the temperature sensor 12 can be mounted to the connecting profile 3a. For this purpose, a sliding nut 13 is inserted into the outer slot 10. For this purpose, the upper retainer guide rail 2b includes an optional cutout 14. However, instead of providing a cutout 14, some sliding nuts 13 can be inserted into the slot 10 of the connecting profile 3a during the assembly of the mounting system 1 for later use. Furthermore, there are special nuts that can be rotated 90° to insert into the slot 10 (see [link to documentation]). Figure 8 ).

[0068] Furthermore, the mounting plate 15 is mounted to the connecting profile 3a by using screws 16 screwed into the sliding nut 13. On the mounting plate 15, the temperature sensor 12 is mounted by nuts 17 screwed into the threads of the temperature sensor 12. The temperature sensor 12 is a non-contact infrared temperature sensor that "looks" at the bus L1 and measures its temperature.

[0069] Figure 8 An example is shown of how the cable clamp 18 can be installed onto the connecting profile 3a. This is also accomplished by a screw on the cable clamp 18 into which one of the sliding nuts 13 is turned. Additionally, Figure 8 A special sliding nut 19 is shown, which can be inserted into the slot 10 by rotating 90° and can then be used to install additional equipment and move in the slot 10 just like the (standard) sliding nut 13. Due to this special insertion method, the notch 14 is not required.

[0070] Figure 9 Showing the combination Figure 7 and Figure 8 Example of the device shown. Temperature sensor 12 and cable clamp 18 are shown in detail in their installed state.

[0071] Figure 10 An example of how a current sensing device can be mounted to a connecting profile 3a is shown. Specifically, the current measuring unit 20 is mounted to the connecting profile 3a using a mounting profile 21 and a screw 22 that rotates into a sliding nut 13. Cable 23 leads to... Figure 10 The current sensor is not explicitly described in the text. Additionally, Figure 11 The image shows a current sensing device in its installed state.

[0072] The additional devices installed on the connecting profiles 3a and 3b are not limited to temperature sensors 12 and current sensing devices, but may also be formed by contact temperature sensors, various types of current sensors, voltage sensors, power sensors, wireless transmitters, wireless receivers, etc. In addition to sliding nuts 13 and 19, T-head bolts, snap-fit ​​pins, snap-fit ​​rivets, expansion rivets, etc., can be used to install the additional devices into at least one slot 10. For completeness, it should be noted that the additional devices may typically be part of the arrangement 6 to be protected.

[0073] Preferably, at least one slot 10 is arranged on one side of at least one of the connecting profiles 3a and 3b, the side pointing outward from the busbar retainers 4a and 4b, or pointing in a direction transverse to the longitudinal extension of the retainer guide rails 2a and 2b. Figure 12 The contents referred to herein are shown by using the shadowed side surfaces A..C of the connecting profiles 3a and 3b that meet the above conditions. By doing so, the slot 10 can be easily accessed even when the mounting system 1 is assembled and the busbars L1..L3 and N are still in place. Typically, in the assembled state of the mounting system 1, there is also available space adjacent to the side surfaces A..C for additional equipment.

[0074] Figure 13The final view shown is a side view of the electrical switchgear 24 in cross-section, which includes several busbars L1...L3, N, a frame 25, and switchgear 26 electrically connected to the busbars L1...L3, N. The busbars L1...L3, N are held in place within the electrical switchgear 24 using mounting systems 1, 1'. Specifically, mounting systems 1, 1' are secured to the frame 25 via frame connectors 5a, 5b and frame connector screws 9a, 9b.

[0075] It should be noted that the present invention is not limited to the embodiments disclosed above, but combinations of different variations are possible. In practice, the installation systems 1, 1' and the switching device 24 may have more or fewer components than shown in the figures. Furthermore, this specification may include the subject matter of other independent inventions.

[0076] It should also be noted that the term "comprising" does not exclude other elements, and the use of the article "a (or an)" does not exclude multiple elements. Elements described in different embodiments can also be combined. It should also be noted that the reference numerals in the claims should not be construed as limiting the scope of the claims.

[0077] List of icon numbers

[0078] 1.1' Install the system

[0079] 2a, 2b retainer guide rails

[0080] 3a..3d connecting profiles

[0081] 4a, 4b bus retainers

[0082] 5a, 5b frame connectors

[0083] 6. Arrangement

[0084] 7a, 7b Busbar Retainer Screws

[0085] 8a, 8b connecting profile screws

[0086] 9a, 9b frame connector screws

[0087] 10 slots

[0088] 11 center holes

[0089] 12 temperature sensors

[0090] 13 (Standard) Sliding Nut

[0091] 14 incisions

[0092] 15 mounting plates

[0093] 16 screws

[0094] 17 nuts

[0095] 18 cable clamps

[0096] 19 (Special) Sliding Nut

[0097] 20 Current Measurement Units

[0098] 21 Installation Profiles

[0099] 22 screws

[0100] 23 cable

[0101] 24 switchgear

[0102] 25 Switchgear Frame

[0103] 26 Switching Devices

[0104] The side surface of the A..C connection profile

[0105] L1, L3, N busbars

Claims

1. An installation system (1, 1') for busbars (L1..L3, N) of an electrical switchgear (24), the installation system comprising - Multiple retainer rails (2a, 2b). - Connecting profiles (3a..3d), which interconnect the retainer rails (2a, 2b) and create a distance between the retainer rails (2a, 2b), and - Multiple bus retainers (4a, 4b), the multiple bus retainers being configured to house the busbars (L1..L3, N) and arranged in the retainer rails (2a, 2b), Its features are, - At least one of the connecting profiles (3a..3d) has at least one T-shaped slot (10) extending parallel to the longitudinal extension of the connecting profile (3a..3d) to facilitate the installation of additional equipment.

2. The installation system (1, 1') according to claim 1, wherein, At least one of the connecting profiles (3a..3d) -Having two T-shaped slots (10) and a cross-section that is rotationally symmetrical about a rotation angle of 180°, or - It has four T-shaped slots (10) and a cross-section that is rotationally symmetrical about a rotation angle of 90°.

3. The installation system (1, 1') according to claim 1 or 2, wherein, The additional equipment is installed into the at least one connecting profile (3a..3d) by means of the at least one T-slot (10).

4. The installation system (1, 1') according to claim 1 or 2, wherein, The at least one T-shaped slot (10) is arranged on the side surface (A..C) of the at least one connecting profile (3a..3d), the side surface pointing outward from the busbar retainer (4a, 4b) or pointing in a direction transverse to the longitudinal extension of the retainer guide rail (2a, 2b).

5. The installation system (1, 1') according to claim 1 or 2, wherein, The outer contour of the cross-section of at least one of the connecting profiles (3a..3d) is rectangular.

6. The installation system (1, 1') according to claim 5, wherein, - The retainer guide rails (2a, 2b) are pillar profiles with an H-shaped or U-shaped cross-section, and - The width of the rectangular cross section of at least one of the connecting profiles (3a..3d) matches the internal dimensions of the H-shaped or U-shaped cross section of the retainer guide (2a, 2b).

7. The installation system (1, 1') according to claim 1 or 2, wherein, - At least one of the connecting profiles (3a..3d) has a central hole (11) extending along the longitudinal axis of the at least one connecting profile (3a..3d), and - At least one of the connecting profiles (3a..3d) is installed to the retainer rail (2a, 2b) by screwing a self-cutting connecting profile screw (8a, 8b) into the center hole (11).

8. The installation system (1, 1') according to claim 1 or 2, wherein, All connecting profiles (3a..3d) have the same cross-section.

9. The installation system (1, 1') according to claim 1, wherein, At least one of the connecting profiles (3a..3d) is embodied as an extruded or pultruded profile and is made of aluminum or plastic.

10. The installation system (1, 1') according to claim 1 or 2, wherein, The retainer rails (2a, 2b) are made of plastic, and the bus retainers (4a, 4b) are made of metal.

11. The installation system (1, 1') according to claim 1, wherein, The retainer guides (2a, 2b) are embodied in extruded or pultruded profiles.

12. An arrangement structure (6) having a plurality of busbars (L1..L3, N) and an installation system (1, 1') according to any one of claims 1 to 11, wherein the busbars (L1..L3, N) are fixed by the installation system.

13. An electrical switchgear (24), the electrical switchgear comprising: - Several busbars (L1..L3, N). - At least one switching device (26), said at least one switching device being electrically connected to the bus (L1..L3, N), and - The installation system (1, 1') according to any one of claims 1 to 11 holds the busbars (L1..L3, N) in place within the electrical switchgear (24) by means of the installation system.

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