12kv Ring Main Unit Sf6 Gas Insulated Switchgear

Overview 

The gas insulated switchgear powers reliable, automation-ready distribution for 12kV industrial and urban grid projects.This SF6 Ring Main Unit seals all live parts and switching devices inside a 3.0mm-thick stainless steel casing, achieving a lifetime maintenance-free design rated at IP67. Furthermore, this Medium Voltage Switchgear supports both fixed and expandable unit combinations, offering exceptional flexibility for substations with limited space or demanding environmental conditions.

Operating Conditions

• Temperature Range: -40°C to +40°C.

• Maximum Altitude: ≤2,000 meters.

• Relative Humidity: ≤95% (maximum mean).

• Protection Grade: IP67; SF6 gas pressure 1.4 bar at 20°C; annual leakage rate ≤0.2%/year

Product Features

• Lifetime Maintenance-Free Sealing：This mv ring main unit encloses all busbars, switches, and live parts in a fully sealed stainless steel chamber filled with SF6 gas, requiring zero scheduled maintenance.

• Full Five-Prevention Interlocking：Every ring main unit integrates a complete five-prevention interlock system that eliminates all equipment and personnel errors caused by human mistakes.

• Flexible Full-Modular Architecture：This Medium Voltage Ring Main Unit combines C (load switch), F (combination apparatus), V (vacuum switch), and CB (circuit breaker) modules in any configuration per substation requirement.

• Safe Pressure Relief Channel：Each SF6 Gas Insulated Switchgear cabinet includes a reliable pressure relief channel that protects operators even under extreme internal fault conditions.

• Smart Automation Integration：This power distribution board supports optional electric operating mechanisms, remote control, and TV-based automation solutions to minimize on-site commissioning workload.

• Extreme Environment Adaptability：This Electrical Switchgear withstands brief water immersion, high humidity, and temperatures as low as -40°C without affecting switching performance.

• Flexible Cable Entry Configuration：All bushings on this power distribution board sit at a uniform height, with the cable room cover interlockable with the ground switch for added installation safety.