Impact Of Vertical Structure On Deployment Space Of High-voltage Disconnect Switches

The vertically pull-out design of the hv isolator switch, due to its vertically separated moving contact structure, creates a significant spatial projection above the device upon disconnection. This consumes more vertical space compared to traditional horizontal or rotary structures.

This high voltage electrical isolator structure ensures sufficient air gap between contacts in high-voltage environments, but it also results in a high vertical occupancy of the equipment body and its operating mechanism, especially in areas where substation equipment is densely arranged. This characteristic requires advance planning in terms of reserved height. The size of the vertically pull-out isolator high voltage also affects the layout of surrounding equipment, such as the installation spacing of surge arresters, busbar supports, and insulator configurations.