24kV SF6 gas insulated load isolation switch (three position with isolation)

The core advantages focus on four dimensions: insulation reliability, function integration, safety protection, and environmental tolerance: ① Reliable insulation: SF6 gas has excellent insulation performance, with insulation strength 2~3 times that of air, suitable for harsh environments such as high humidity and high pollution, without creepage or flashover risks; ② Function integration: The three-in-one position design eliminates the need for separate isolation switches and earthing switches, reduces cabinet volume and equipment costs; ③ Safety protection: Built-in mechanical and electrical interlock device to realize the anti-misoperation logic of "cannot earth when closing, cannot close when earthing, and only isolation position allows maintenance cabinet door opening"; ④ Environmental tolerance: IP65 protection level, anti-corrosion, moisture-proof, dust-proof, suitable for special scenarios such as coastal salt spray and plateau low temperature; ⑤ Flexible operation: Support electric remote control and manual emergency operation, suitable for unattended substation needs.

It is a 3-position integrated switchgear designed for 24kV medium-voltage distribution networks, integrating three core functions: load breaking, isolation earthing, and circuit connection. It uses SF6 gas as the insulation medium and is suitable for the sealed and compact installation environment of gas-insulated cabinets. The three positions specifically refer to "closing working position, opening isolation position, and earthing maintenance position", which can be switched by electric or manual drive. It has the ability of arc-free load current breaking, reliable circuit isolation, and safe earthing maintenance, and is a core switch component of medium-voltage distribution network ring main units and branch cabinets.