Low-voltage sheet-shaped conductor main bus used in switch cabinet

Abstract

A low-voltage sheet-shaped conductor main bus used in a switch cabinet relates to the field of power transmission and distribution. The main bus conductor is mainly designed for solving the problems that the utilization rate of the main bus conductor used in the switch cabinet at present is low, and an insulating material outside the conductor does not have mechanical strength. The cable comprises a thin-plate-shaped copper conductor and a rigid composite insulation shell. A plurality of axial phase-to-phase insulating partition plates are arranged in the rigid composite insulating shell, the phase-to-phase insulating partition plates and the rigid composite insulating shell are integrally formed, the number of the phase-to-phase insulating partition plates is designed according to the phase number requirement of the bus, and each phase of the thin-plate-shaped copper conductor is respectively positioned in different grids of the rigid composite insulating shell. A bottom plate of the rigid composite insulation shell of each grid is provided with a branch row reserved opening for the branch row to stretch out, and each phase of branch row of the thin-plate-shaped copper conductor can stretch out from each corresponding branch row reserved opening. The cable has the advantages of high conductor utilization rate and high mechanical strength.

Description

Technical Field

[0001] The invention relates to the field of power transmission and distribution, and in particular to a low-voltage main busbar for receiving, transmitting and distributing electric energy in a switch cabinet. Background Art

[0002] The main busbars in switch cabinets generally use copper bars as conductors. The copper bars themselves are thick, have poor heat dissipation, and low conductor utilization. Heat shrink tubes are used as insulation materials on the outside of the conductors. The heat shrink tubes have average heat resistance and insulation performance, and lack mechanical strength, resulting in a short service life. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a low-voltage thin-plate conductor main busbar for use in a switch cabinet with high conductor utilization and high mechanical strength.

[0004] The object of the present invention is achieved in that:

[0005] A low-voltage thin-plate conductor main busbar used in a switch cabinet, comprising a thin-plate copper conductor and a rigid composite insulating shell;

[0006] The rigid composite insulating shell is provided with a plurality of axial interphase insulating partitions, which are integrally formed with the rigid composite insulating shell. The number of interphase insulating partitions is designed according to the number of bus phases, generally 2-4. The 2-4 interphase insulating partitions divide the internal space of the rigid composite insulating shell into 3-5 grids. For example, three interphase insulating partitions can divide the rigid composite insulating shell into four grids (three-wire four-phase system).

[0007] Each phase of the thin plate-shaped copper conductor is located in a different compartment of the rigid composite insulating shell.

[0008] A branch row reserved opening for branch rows to extend out is arranged on the bottom plate of the rigid composite insulating shell of each grid, and each phase branch row of the thin plate-shaped copper conductor can extend out from each corresponding branch row reserved opening.

[0009] The material of the rigid composite insulating shell can be epoxy resin, glass fiber reinforced plastic, etc.

[0010] The interphase insulating partition may be made of epoxy resin, glass fiber reinforced plastic, etc.

[0011] The material of the thin plate-shaped copper conductor is copper.

[0012] The rigid composite insulating shell of the present invention is integrally connected and fixed to the frame of the switch cabinet by fixing bolts, and the copper bars of each phase terminal of the equipment in the switch cabinet are connected to the branch bars of each phase of the thin plate-shaped copper conductor of the present invention.

[0013] The advantages of the present invention are: using thin copper plate as conductor, its skin effect coefficient is small, heat dissipation is good, temperature rise is low, and conductor utilization rate is high. The conductor is covered with a rigid composite insulating shell with interphase insulating partitions, which has good heat resistance, strong insulation, and high mechanical strength. The main bus phases are separated by interphase insulating partitions, and the operation is safe and reliable and has cost-effective advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0015] Figure 2 yes Figure 1 A-direction view;

[0016] Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0017] Figure 4 yes Figure 3 BB view;

[0018] Figure 5 It is a schematic diagram of the installation state of the present invention. DETAILED DESCRIPTION

[0019] Combine the following Figure 1-5 The present invention is further described;

[0020] A low-voltage thin-plate conductor main busbar used in a switch cabinet, comprising a thin-plate copper conductor 1 and a rigid composite insulating shell 2;

[0021] The rigid composite insulating shell is provided with a plurality of axial interphase insulating partitions 3, which are integrally formed with the rigid composite insulating shell. The number of interphase insulating partitions is designed according to the number of bus phases, generally 2-4. The 2-4 interphase insulating partitions divide the internal space of the rigid composite insulating shell into 3-5 grids. For example, three interphase insulating partitions can divide the rigid composite insulating shell into four grids (three-wire four-phase system).

[0022] Each phase of the thin plate-shaped copper conductor is located in a different compartment of the rigid composite insulating shell.

[0023] A branch row reserved opening 5 for the branch row 4 to extend out is provided on the bottom plate of the rigid composite insulating shell of each grid, and each phase branch row of the thin plate-shaped copper conductor can extend out from each corresponding branch row reserved opening.

[0024] The material of the rigid composite insulating shell can be epoxy resin, glass fiber reinforced plastic, etc.

[0025] The interphase insulating partition may be made of epoxy resin, glass fiber reinforced plastic, etc.

[0026] The material of the thin plate-shaped copper conductor is copper.

[0027] The rigid composite insulating housing of the present invention is integrally connected and fixed to the frame of the switch cabinet 6 by fixing bolts, and the copper bars of each phase terminal of the equipment in the switch cabinet are connected to the branch bars of each phase of the thin plate-shaped copper conductor of the present invention.

[0028] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A low-voltage thin-plate conductor main busbar for use in a switch cabinet, characterized by: It comprises a thin plate-shaped copper conductor (1) and a rigid composite insulating shell (2); The rigid composite insulating shell is provided with a plurality of axial interphase insulating partitions (3), the interphase insulating partitions and the rigid composite insulating shell being integrally formed; the plurality of interphase insulating partitions divide the internal space of the rigid composite insulating shell into a plurality of compartments; Each phase of the thin plate-shaped copper conductor is located in a different compartment of the rigid composite insulating shell; A branch row reserved opening (5) for the branch row (4) to extend out is provided on the bottom plate of the rigid composite insulating shell of each grid, and each phase branch row of the thin plate-shaped copper conductor can extend out from each corresponding branch row reserved opening.

2. The low-voltage thin-plate conductor main busbar for use in a switch cabinet according to claim 1, characterized in that: The rigid composite insulating shell is made of epoxy resin and glass fiber reinforced plastic; the interphase insulating partition is made of epoxy resin and glass fiber reinforced plastic.

3. The low-voltage thin-plate conductor main busbar for use in a switch cabinet according to claim 1 or 2, characterized in that: The material of the thin plate-shaped copper conductor is copper.

4. The low-voltage thin-plate conductor main busbar for use in a switch cabinet according to claim 1 or 2, characterized in that: The number of interphase insulating partitions is designed according to the number of bus phases, and the number is 2-4. 2-4 interphase insulating partitions divide the internal space of the rigid composite insulating shell into 3-5 grids.

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