Low-voltage busbars are made of copper(copper bars) and high-conductivity aluminum materials. They are used for power transmission, with the ability to collect and distribute electricity, or as conductors for transmitting electricity in power plants and substations. In power systems, busbars connect all current-carrying branches in the distribution equipment, playing a role in collecting, distributing, and transmitting electricity. Currently, busbar trunking systems have emerged as a new type of power distribution conductor. Compared with traditional cables, low-voltage busbar trunking systems fully demonstrate their superiority in high-current transmission. However, most busbar trunking systems currently have shortcomings in space utilization, vibration response, fire prevention, and heat dissipation, especially low-voltage busbar trunking systems.

Technical points of low-voltage busbars: Our goal is to provide a new type of low-voltage busbar trunking system to address the problems existing in the above-mentioned background technology. To achieve this goal, we adopt the following technical scheme: A new type of low-voltage busbar trunking system, including an upper cover plate and a lower cover plate, with upper and lower U-shaped fireproof plates connected to the sides of the upper and lower cover plates respectively via bolts.The upper cover plate and the upper U-shaped fireproof plate form an upper cavity, and the lower cover plate and the lower U-shaped fireproof plate form a lower cavity. The left and right sides of the upper and lower U-shaped fireproof plates are connected to the side plates via bolts.

A conductor is provided between the two side plates of the low-voltage busbar, and the conductor is composed of multiple longitudinally spaced busbars; above the busbarsThe lower surface of the U-shaped fireproof plate has slots, and mica sheets are embedded in the slots; the bottom of the mica sheets is in contact with the top of the busbar, and the surface of the busbar is provided with an insulation layer; elastic insulation brackets are fixed to the upper surface of the U-shaped fireproof plate below the low-voltage busbar, and the upper surface of the elastic insulation brackets has a U-shaped groove, with the busbar placed in the U-shaped groove; through-holes are provided on the busbars and the corresponding side plates.

The upper cover plate, lower cover plate, upperU-shaped fireproof plate, lower U-shaped fireproof plate, and side plates of the low-voltage busbar trunking system are all made of aluminum alloy profiles, and the upper and lower cavities are filled with fire-resistant filler. The side walls of the through-holes are provided with insulation layers, and a U-shaped groove is also formed at the position where the mica sheet contacts the busbar to fix the busbar.

Compared with the existing technology, the above-mentioned low-voltage busbar trunking system has a novel structure. The I-shaped structure makes the busbar trunking system relatively small in volume, reuses the mechanical properties of the materials, and improves the space utilization rate. In addition, the elastic insulation bracket is provided witha U-shaped groove for fixing the busbars and preventing them from falling off. At the same time, the elastic insulation support can effectively reduce the impact of external vibrations on the busbars, providing good cushioning. Through-holes for heat dissipation are provided on the busbars and the corresponding side plates, and the side walls of the through-holes are provided with insulation layers. The setting of the through-holes facilitates heat dissipation of the low-voltage busbar trunking system while hardly affecting the conductivity. In addition, in a low-voltage working environment, the insulation layer outside the busbars can completely eliminate the influence of water vapor from the through-holes, achieving heat dissipation and ensuring safety.