• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A support insulator assembly (15) for busbars (10) of an electrical switchboard (2), wherein the upper and lower edges of a support insulator (20) made of insulating material have notches (24) for fastening busbars (10) between two support insulators (20), characterized in (20) further has openings (22) for attaching busbars (10) and one or more fitting pieces (30) can be fitted to said openings (22) and / or said notches (24) to reduce the area of the openings (22) by busbars (10) of different sizes for. In addition, protection requirements 2-5.
    公开号:FI12913Y1
    申请号:FIU20214019U
    申请日:2021-02-12
    公开日:2021-03-17
    发明作者:Martti Jormanainen
    申请人:E Avenue Oy；
    IPC主号:
    专利说明:

    The invention relates to a support insulator assembly for busbars of an electrical switchboard, in which the upper and lower edges of a support insulator made of insulating material have notches for attaching busbars between two support insulators.
    Typically, the electrical panel comprises busbars to which the components of the electrical panel are connected.
    The busbars have a high potential, so the busbars must be connected to the grounded frame of the control panel with support insulator assemblies made of insulating material.
    The busbars are typically installed in the control panel horizontally in pairs, i.e. two busbars run in parallel.
    The contact end of the cable is attached to the busbars with a bolt that can be fitted between the busbars.
    The copper busbar can be made to a smaller size than the aluminum busbar due to the better electrical conductivity of copper.
    However, due to the high cost of copper, aluminum busbars are more common.
    The aluminum busbar is typically dimensioned so that the current flowing in the busbar can be 1.7 to 2 A / mm Per busbar cross-sectional area. The current O 25 per cross-section of the copper busbar can be 1.5 times.
    The final N dimensioning depends on the temperature increase allowed by the customer as the N load increases.
    Typically, a 10 mm wide rail is used, = which is then delivered as 10, 20, 30, 40, 50 and 60 mm high> beams and, if necessary, even higher.
    Typical currents used in S 30 busbars are 125 A, 250 A, 320 A, 400 N A and 630 A.
    Several different sizes are required for the electrical center, 5 of which 125 A, 250 A and 320 A busbars are the most common, corresponding to 10, 20 and 30 mm high aluminum busbars.
    In the event of a fault, very high mechanical stresses can form between the busbars due to the magnetic field caused by the high short-circuit current. Therefore, the busbar support insulator assembly must withstand a very high mechanical stress.
    A support insulator assembly is known in the art, in which the busbars are fitted between two support insulators so that the busbars are supported in notches at the edges of the support insulators and by mutually pressing bolts. This solution is only suitable for busbars of one size. Other similar solutions for two support insulators are known. End-to-end plastic support insulators are also common. The support insulators can be installed in the height direction, for example every 10 mm, in which case it is possible to adjust how high the busbar fits between the two support insulators. However, it is often necessary to use differently sized busbars in electrical switchboards, which means that support insulator assemblies are also required in several different sizes. This makes a prior art solution expensive to implement and difficult to use. The use of different support insulator configurations also causes waste space. The object of the invention is to provide an improved support insulator assembly which is easily usable for attaching several busbars of different sizes to the body of a switchboard and to avoid wastage. The characteristic S features of the present invention appear from the appended claim 1.
    N = The support insulator assembly according to the invention for the busbars of the electrical switchboard is made of an insulating material and the upper and lower edges of the support insulator S 30 have notches for fixing the busbars N between the two support insulators. The support insulator also has 5 openings for attaching busbars, and one or more adapter pieces can be fitted to the openings and / or notches to reduce the area of the openings for busbars of different sizes.
    In this way, the support insulator assembly can be used to attach busbars of different sizes to the electrical panel body.
    Thanks to the fitting pieces, the area of the openings and / or notches can be adjusted as required, whereby the support insulator assembly scales to busbars of different sizes.
    In this way, waste space is avoided and the electrical panel can be manufactured at a lower cost.
    The invention is particularly advantageous for small busbars (125 A, 250 A, 320 A), because with the support insulator assembly according to the invention several busbars of different sizes can be installed in the same plane in parallel to avoid waste space.
    In this context, a support insulator assembly means a support insulator and any fitting pieces that can be connected to it as required.
    That is, the support insulator assembly may consist of a support support alone or a support insulator and one or more adapter pieces attached thereto.
    Preferably, the support insulators can be attached at their ends to the vertical beams at 10 mm intervals as in known solutions.
    In addition, each support insulator allows the installation of busbars of different sizes with internal fastening and fitting pieces.
    O 25 N F The complete piece comprises a hook-like gripping member N and a support part.
    In this case, the fitting piece can easily be fitted into the opening E without separate fastening means. o S 30 Preferably, the support insulator has N stiffening elements for stiffening the structure.
    In this case, the support insulator withstands the mechanical stress that arises in the event of a fault.
    Fdulling elements are connected to each other so that they form a uniform rib structure. This results in a very strong structure that can withstand the mechanical stresses that arise in the event of a fault.
    Preferably, the material of the support insulator assembly is glass fiber reinforced polyamide. Preferably, the openings are arranged in pairs so that the distance between the pairs is greater than the distance between the openings of the pair, because generally two busbars come to the pair to the same potential. Preferably, the width of the opening corresponds to the width of the notch. In this case, busbars of the same width can be fitted to both the openings and the notches. Preferably, the openings and notches are located in the vertical line of the support insulator. In this way, busbars of different sizes can be fitted to the electrical panel in the same line. Preferably, the support insulator comprises attachment stops for attaching the support insulator assembly to the vertical profiles of the electrical panel body. In this way, the support insulator assembly can be easily fastened inside the electrical cabinet, for example with screws.
    S N The support insulator can have 4 to 8 openings, preferably = 6. In this way, the busbars can be fitted> to the existing frame structure of the electrical switchboard at selected S 30 distances from each other. s> The distance between the mounting brackets on opposite edges of the support insulator can be 350 - 600 mm. The mechanical resistance of the support insulator assembly has been tested at 100 kA short circuit.
    in the figure with a support insulator with a distance between the fixing stops of 450 mm.
    The invention is described in detail below with reference to
    5 to the accompanying drawings illustrating some embodiments of the invention.
    Figure 1 shows a perspective view of an electrical switchboard according to the invention,
    Figure 2 shows a top view of an electrical switchboard according to the invention,
    Figure 3 shows a perspective view of a support insulator according to the invention, Figure 4 shows a front view of a support insulator according to the invention,
    Figure ba shows a perspective view of a fitting piece according to the invention,
    Figure 5b shows a side view of a fitting piece according to the invention,
    Figure 6a shows a perspective view of a support insulator according to the invention with one fitting piece from the front,
    Fig. 6b shows a perspective view of a support insulator according to the invention with two fitting pieces from the rear, Fig. 6c shows a perspective view of a N support insulator according to the invention with two fitting pieces from the front. a o S 30 Figure 1 shows the frame structure of an electrical switchboard 2, to which N is attached horizontally, in pairs of busbars 5 10 of different sizes with support insulator assemblies 15 according to the invention. The support insulator assembly 15 can be fitted with screws to support insulators.
    Figure 2 shows a top view of the frame structure of the electrical center 2 to which busbars 10 are attached with support insulator assemblies 15 according to the invention.
    Thus, the length of the busbars 10 may also vary and the busbars 10 may be supported by two or more support insulator assemblies 15. Figures 3 and 4 show in more detail the structure of a support insulator 20 according to the invention.
    The support insulator 20 is made of an insulating and mechanically resistant material, for example fiberglass-reinforced polyamide.
    The support insulator 20 has stiffening elements 28 for stiffening the structure, which are projections rising from the surface.
    The stiffening elements 28 are on the largest side of the support insulator 20, preferably on both opposite sides.
    There are recesses between the stiffening elements 28 and the stiffening elements 28 are connected to each other so as to form a uniform rib structure which provides the rigidity required in failure situations.
    O 25 At the upper and lower edges of the support insulator 20, notches 24 corresponding to the prior art are arranged in pairs. Large current busbars 10 can be attached to the body of the electrical panel 2 so that the busbar 10 is supported between two support insulators 20. > In this case, the first support insulator 20 is fitted below the busbar 10 S 30 and the second support insulator 20 above the busbar 10, and the edges of the busbar 10 are fitted in the notches 24 of the support insulators 20 5 as shown in Fig. 1.
    In the middle of the support insulator 20 there are further openings 22 arranged in pairs, which are dimensioned so that busbars 10 can be fitted to them. The width of the opening 22 corresponds to the width of the notch 24. The busbar 10 can be fitted into the opening 22 of the support insulator 20 as shown in Figure 1, where the busbar 10 is inserted through the opening 22 and supported on the support insulator 20 at both ends. Two or more support insulators 20 may be used to support the busbar 10.
    The area (height) of the opening 22 of the support insulator 20 can be reduced by the fitting piece 30 shown in Figures ba and bb. The fitting piece 30 comprises two gripping members 32 and a support part
    34. The fitting piece 30 can be fitted to the opening 22 of the support insulator 20 by threading the gripping members 32 of the fitting piece 30 through two adjacent openings 22, the hook-like gripping members 32 resting on the rear side of the support insulator 20 and the support portion 34 remaining in front of the support insulator 20.
    One or two pieces of fitting pieces 30 can be fitted to the two openings 22 of the support insulator 20 in the manner shown in Figures 6a to 6c. In this case, up to three busbars 10 of different cross-sections can be fitted in the openings of the support insulator 20 thanks to the fitting pieces 30.
    O 25 The fitting pieces 30 can also be produced in different sizes, whereby the area of the openings 22 of the N support insulator 20 scales according to the need N. The manufacture of the adapter pieces 30 is cheaper than the manufacture of the support insulator 20, so that the adapter pieces 30> make the support insulator assembly 15 as a whole S 30 cheaper.
    In addition to the embodiment shown in F>, the structure of the support insulator assembly can also be modified so that the notches of the support insulator are made deeper and fitting pieces are fitted in the notches for fixing busbars of different sizes. - OF O OF OF I OF TU
    I a a o
    TU oO + TU OF O
    N> ”
    权利要求:
    Claims (5)
    [1]
    Support insulator assembly (15) for busbars (10) in a power station (2), wherein at the upper and lower edges of a support insulator (20) of insulating material there are recesses (24) for attaching the busbars (10) between two support insulators (2), characterized in that the support insulator (20) also has openings (22) for attaching the busbars (10) and in said openings (22) and / or in said recesses (24) one or more adapter pieces (30) fitted to reduce the area of the openings (22) for busbars (10) of different sizes.
    [2]
    Support insulator assembly (15) according to protection claim 1, characterized in that the adapter (30) comprises a hook-shaped gripping member (32) and a support part (34).
    [3]
    Support insulator assembly (15) according to protection requirement 1 or 2, characterized in that the support insulator (20) has stiffening elements (28) for stiffening the structure.
    [4]
    Support insulator composition (15) according to one of Claims 1 to 3, characterized in that the material of the support insulator composition (15) is glass fiber-reinforced polyamide. O 25
    [5]
    Support insulator assembly (15) according to one of Claims 1 to 4, characterized in that the openings (22) and N recesses (24) are placed in line in the vertical direction of the support insulator (20). i 3 30 3> ”
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    同族专利:
    公开号 | 公开日
    EP3866287A1|2021-08-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE6930257U|1969-07-25|1970-04-16|Siemens Ag|BUSHING FOR BUSBAR LADDER WITH RECTANGULAR CROSS-SECTION|
    NL185046C|1981-11-03|1990-01-02|Loh Kg Rittal Werk|HOLDER FOR CURRENT RAILS.|
    DE9405319U1|1994-03-29|1995-08-10|Kloeckner Moeller Gmbh|Busbar support for low-voltage power distributors|
    FR2719718B1|1994-05-06|1996-06-07|Schneider Electric Sa|Busbar device, in particular for an electrical distribution cabinet.|
    EP1133820B1|1998-10-30|2003-04-23|ABB Service Srl|Device for supporting and fixing bus-bars|
    FI20012394A|2001-12-05|2003-06-06|Suomen Cnc Metal Oy|support insulator|
    法律状态:
    2021-03-17| FGU| Utility model registered|Ref document number: 12913 Country of ref document: FI Kind code of ref document: U1 |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20205157|2020-02-14|
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