Low-voltage sheet-shaped conductor main bus used in switch cabinet
By using thin-plate copper conductors and rigid composite insulating housings inside the switch cabinet, the problems of poor heat dissipation and insufficient insulation caused by the thickness of the copper busbar conductors are solved, achieving efficient heat dissipation, strong insulation and high mechanical strength, and extending service life.
Patent Information
- Application Number
- CN202520034558.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-08
AI Technical Summary
The copper busbar conductors in existing switch cabinets are thick, resulting in poor heat dissipation, low conductor utilization, and generally poor insulation performance and insufficient mechanical strength of the heat shrink tubing, leading to a short service life.
It adopts thin plate copper conductors and rigid composite insulation shell. The thin plate copper conductors are located in different compartments of the rigid composite insulation shell and are separated by phase insulation partitions. The outside is covered by a rigid composite insulation shell made of epoxy resin or fiberglass. It is connected to the switch cabinet frame by fixing bolts, and the branch row extends out through the reserved opening.
It improves the conductor's heat dissipation and mechanical strength, enhances insulation performance, increases conductor utilization, extends service life, and offers cost-effectiveness advantages.
Smart Images
Figure CN223797170U_ABST
Abstract
Description
Technical fields:
[0001] This utility model relates to the field of power transmission and distribution, and in particular to a low-voltage main busbar for receiving, transmitting and distributing electrical energy in a switch cabinet. Background technology:
[0002] Copper busbars are commonly used as conductors in the main busbars of switchgear. Copper busbars are relatively thick, resulting in poor heat dissipation and low conductor utilization. Heat-shrink tubing is used as insulation on the outside of the conductors. However, this heat-shrink tubing has only moderate heat resistance and insulation properties, and lacks mechanical strength, leading to a short service life. Summary of the Invention:
[0003] The technical problem to be solved by this utility model is to provide a low-voltage thin plate-shaped conductor main busbar for use in switch cabinets with high conductor utilization and high mechanical strength.
[0004] The purpose of this utility model is achieved as follows:
[0005] A low-voltage thin-plate conductor main busbar for use in a switchgear includes a thin-plate copper conductor and a rigid composite insulating shell;
[0006] The rigid composite insulating shell contains several axial phase-to-phase insulating partitions. The phase-to-phase insulating partitions are integrally formed with the rigid composite insulating shell. The number of phase-to-phase insulating partitions is designed according to the number of phases of the busbar, generally 2-4. The 2-4 phase-to-phase insulating partitions divide the internal space of the rigid composite insulating shell into 3-5 compartments. For example, setting three phase-to-phase insulating partitions can divide the rigid composite insulating shell into four compartments (three-wire four-phase system).
[0007] Each phase of the thin-plate copper conductor is located in a different compartment of the rigid composite insulating shell.
[0008] Each rigid composite insulating shell has a branch row reserved opening on its bottom plate for branch row extension. Each phase branch row of the thin plate copper conductor can extend from its corresponding branch row reserved opening.
[0009] The rigid composite insulating shell can be made of epoxy resin, fiberglass, etc.
[0010] The material of the interphase insulating partition can be epoxy resin, fiberglass, etc.
[0011] The material of the thin-plate copper conductor is copper.
[0012] The rigid composite insulating shell of this utility model is fixed to the frame of the switch cabinet by fixing bolts. The copper busbars of each phase terminal of the equipment inside the switch cabinet are connected to the phase branch busbars of the thin plate copper conductor of this utility model.
[0013] The advantages of this invention are: using a thin copper plate as the conductor results in a small skin effect coefficient, good heat dissipation, low temperature rise, and high conductor utilization. The conductor is covered by a rigid composite insulating shell with interphase insulating partitions, which has good heat resistance, strong insulation, and high mechanical strength. The phases of the main busbar are separated by interphase insulating partitions, ensuring safe and reliable operation and offering cost-effectiveness advantages. Attached image description:
[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0015] Figure 2 yes Figure 1 View from direction A;
[0016] Figure 3 This is a top view of the structure of this utility model;
[0017] Figure 4 yes Figure 3 BB view;
[0018] Figure 5 This is a schematic diagram of the installation state of this utility model. Detailed implementation method:
[0019] The following is combined Figure 1-5 The present invention will be further described below;
[0020] A low-voltage thin-plate conductor main busbar for use in a switch cabinet includes a thin-plate copper conductor 1 and a rigid composite insulating shell 2;
[0021] The rigid composite insulating shell is provided with several axial phase-to-phase insulating partitions 3. The phase-to-phase insulating partitions are integrally formed with the rigid composite insulating shell. The number of phase-to-phase insulating partitions is designed according to the number of phases of the busbar, generally 2-4. The 2-4 phase-to-phase insulating partitions divide the internal space of the rigid composite insulating shell into 3-5 compartments. For example, setting three phase-to-phase insulating partitions can divide the rigid composite insulating shell into four compartments (three-wire four-phase system).
[0022] Each phase of the thin-plate copper conductor is located in a different compartment of the rigid composite insulating shell.
[0023] Each grid of rigid composite insulating shell has a branch row reserved opening 5 on its bottom plate for branch row 4 to extend out. Each phase branch row of the thin plate copper conductor can extend out from its corresponding branch row reserved opening.
[0024] The rigid composite insulating shell can be made of epoxy resin, fiberglass, etc.
[0025] The material of the interphase insulating partition can be epoxy resin, fiberglass, etc.
[0026] The material of the thin-plate copper conductor is copper.
[0027] The rigid composite insulating shell of this utility model is fixed to the frame of the switch cabinet 6 by fixing bolts. The copper busbars of each phase terminal of the equipment inside the switch cabinet are connected to the phase branch busbars of the thin plate copper conductor of this utility model.
[0028] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A low voltage sheet conductor busbar for use in a switchgear cabinet, characterized in that: It comprises a thin-plate copper conductor (1) and a rigid composite insulation shell (2); The rigid composite insulation shell is internally provided with a plurality of axial phase-to-phase insulation partitions (3) which are integrally formed with the rigid composite insulation shell; the plurality of phase-to-phase insulation partitions divide the interior space of the rigid composite insulation shell into a plurality of compartments; Each phase of the thin-plate copper conductor is located in a different compartment of the rigid composite insulation shell; The bottom plate of the rigid composite insulation shell of each compartment is provided with a branch row reserved opening (5) through which a branch row (4) extends, and each phase branch row of the thin-plate copper conductor can extend from the corresponding branch row reserved opening.
2. A low voltage sheet conductor busbar for use in switchgear according to claim 1, characterized in that The number of phase-to-phase insulation partitions is designed according to the number of busbar phases, and the number is 2-4; the plurality of phase-to-phase insulation partitions divide the interior space of the rigid composite insulation shell into 3-5 compartments.