Customization Requirements and Considerations for Power Distribution Cabinet Enclosures

The distribution cabinetenclosure is an indispensable part of the distribution cabinet, playing a significant protective role. It, like the switchgear, needs to be customized. There are three main reasons for this. Firstly, it is due to the particularity of the installation environment. As the installation environments at different project sites vary, for example, insufficient space requires a more compact design, cable entry and exit methods differ, or a large number of cables require top exiting, all necessitate adjustments to the shell structure to optimize space design and heat dissipation design. Secondly, it is to meet electrical requirements, such as protection level and insulation performance requirements. To protect against arc faults, the shell needs to have pressure relief channels and sufficient mechanical strength. Thirdly, it is to accommodate specific component configurations. Customers may specify the use of specific brands or models of components such as circuit breakers, transformers, etc. The dimensions and installation interfaces of these components may not match standard enclosures, requiring custom enclosures to ensure compatibility. Through customization, it can be guaranteed that the switchgear precisely matches the site environment and customer requirements.

Switchgear Enclosure customization also requires consideration of multiple aspects. In terms of material selection, common materials for enclosures include galvanized steel, stainless steel, aluminum alloy, etc. The cabinet panel thickness is generally not less than 2mm and needs to meet mechanical strength and protection level requirements. In terms of size and space planning, precise measurements must be taken based on the internal equipment layout, reserving sufficient operation and maintenance space. If it involves cable entry and exit, the depth and height of the cable room must also be reasonably planned to ensure the cable bending radius meets standards. Higher protection levels impose higher requirements on the enclosure. The enclosure protection level is generally determined based on the environment, ensuring enclosure sealing, preventing dust ingress, moisture ingress, while also meeting anti-electric shock functions. Some also require anti-rust and anti-corrosion functions. Heat dissipation design and electrical safety are also factors to consider. The enclosure needs designed heat dissipation channels or ventilation openings to prevent excessive internal equipment heat generation and high temperature rise from affecting equipment lifespan. It is also necessary to ensure reliable enclosure grounding, and all metal components require equipotential bonding.

Power distribution equipment enclosures require attention to some matters during the customization process. For example, cutting and forming will take considerable time in layout, drilling, and cutting. In most cases, there is no room for error because once cutting is skewed, it will give the enclosure a poor appearance and reduce its protection level. After cutting is completed, the cut edges must be polished smooth, removing burrs and rough and sharp edges. Residue, oil, and tape left after cutting need to be removed, and cutting marks also need to be removed. After cleaning, the edges of the steel enclosure exposed due to cutting must be painted against corrosion. Only at this stage can the enclosure be produced and assembled.