GM series enclosed busbar trunkingDetailed product description：

1、 Scope of application:
CM common box enclosed busbar is a new type of busbar channel jointly developed by multiple domestic research institutions. Suitable for power supply systems with AC frequency of 50-60Hz, voltage of 3.6-40.5kV, and rated current of 400-3150A.

2、 Structural characteristics of GM series enclosed bus duct:
1) The modified series bus duct has excellent short-circuit resistance performance. Due to the protection of the aluminum (or weak magnetic steel plate) shell, it can effectively reduce the structural heating caused by vortices or circulating currents, lower the temperature of the bus duct shell, reduce electrical energy loss, increase current carrying capacity, and reduce electric power.
2) The structure of the modified series bus duct is advanced, and the installation and maintenance holes can be freely set at the upper or lower part of the bus duct. For high current indoor bus ducts, there are no ventilation louvers on both sides and the lower part of the shell to enhance heat dissipation and reduce temperature rise.
3) The use of double insulation and multi-point connection grounding of the shell significantly reduces maintenance workload and improves safety performance.
4) The use of bellows expansion joints is simple to install and allows for adjustment of two degrees of freedom in both horizontal and vertical directions. It not only meets the expansion and contraction requirements caused by different temperature drops and thermal expansion and contraction, but also compensates for errors caused by foundation settlement, solving the problems of poor protection, inconvenient installation, and reliable operation of traditional sliding plate expansion and contraction devices.
5) In order to address the negative impact of vibration generated during the operation of transformers, generators, and distribution cabinets on the busbar trunking, soft connections or copper braided tapes are used at their connections with the busbar trunking, and rubber pads are added between the shells to reduce vibration; For the busbar trunking body, shock absorbers are installed in the system to provide elastic support for the porcelain bottles and conductive bars, effectively avoiding mechanical vibrations and seismic waves caused by the shell from damaging the enclosed busbar.
6) The heat transfer of the bus duct mainly relies on thermal radiation. In order to make good use of thermal radiation, light gray paint is sprayed on the surface of the bus duct to reduce the absorption of visible light; Spray black paint on the surface inside the bus duct to enhance the radiation of internal heat to the shell and prevent corona.