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Date：11-17-2021
The fully insulated SF6 ring network cabinet is composed of load switches, load switch-fuse combination electrical appliances, isolation switches-circuit breakers and other main switches to form functional units and sealed air boxes. It will all high-voltage live parts such as load switches, bus-side grounding switches, The bus bar is sealed in a stainless steel box filled with low-pressure SF6 gas. SF6 is used as the arc extinguishing medium. The electric or manual energy storage spring operating mechanism is adopted. The bus bar can be expanded in the left and right directions through the bus connector.
The fully insulated SF6 ring network cabinet is fully sealed and fully insulated. All high-voltage live parts are all sealed in a low-pressure SF6 gas box, free from external environmental influences, such as dirt, humidity, salt spray, small animals, etc. Modular design. Adopting a modular design scheme, the basic module units are load switch modules, load switch-fuse combination electrical modules, isolating switch-breaker modules and other special function modules in any combination, and any modules can be connected by silicone rubber busbars The device realizes arbitrary expansion and connection. The cabinet size of the fully insulated SF6 ring network cabinet is small. The use of a three-station rotary load switch effectively reduces the number of parts and realizes the mechanical five-proof interlock.
The vacuum circuit breaker is filled with SF6 insulating gas to make the overall structure more compact. Current-limiting fuses are also developing towards miniaturization. Combining the two, the cabinet is getting smaller and smaller. High insulation performance. The gas box of the fully insulated SF6 ring network cabinet is laser welded with imported 3mm stainless steel plate to ensure the high-strength requirements of the equipment in operation, anti-corrosion, anti-eddy current, and the protection level can reach IP67. The air tightness is very good and can be guaranteed for 30 years.
