(1) The cabinet body should be protected from impact to prevent frame deformation, panel dents, or surface coating damage that may affect appearance and performance.

(2) The foundation channel steel for adjacent cabinets must be level, with an allowable deviation of no more than 1 mm per meter.

(3) For withdrawable switchgear, the foundation height should facilitate smooth movement of the draw-out unit, and the floor surface should not create any steps or obstructions.

(4) During transportation and installation, special care must be taken to protect the vacuum interrupter chamber. When installing the main busbar on top of the cabinet, the vacuum circuit breaker should be covered with a rigid protective board to prevent tools, screws, or other objects from falling and causing damage.

(5) When installing the main busbar:
a. Busbar connections to electrical components must be secure to ensure adequate current-carrying capacity.
b. For high-current applications, joints should be tinned.
c. The conductive contact surfaces between bare copper conductors should be coated with protective compounds (such as conductive grease or petroleum jelly) to prevent oxidation and moisture ingress.

(6) Secondary wiring cables inside the cabinet must be routed along designated paths and must not interfere with moving components or be exposed to damage during future maintenance activities.

(7) The main grounding busbar of the cabinet must be reliably connected to the embedded grounding grid of the installation foundation to ensure continuous and dependable grounding. Upon completion of installation, acceptance testing shall be carried out in accordance with relevant power industry standards and regulations.