C-GIS (Cubicle Gas-Insulated Switchgear) is a type of metal-enclosed switchgear that uses gas insulation. It is mainly used in medium and high voltage power systems up to and including 35kV. Its core features include modular design, compact structure, and high reliability. It is suitable for power plants, substations, industrial and mining enterprises, and urban rail transit.

Features & Advantages

• Decoupled modules
• The use of silicone rubber insulated busbar coupler as the switchgear busbar connection device reduces on-site assembly workload
• No gas handling on site during installation and extension
• Simple and safe switchgear concept， All operating and maintenance procedures are effected from the operator‘s side (this enables wall mounting of single busbar systems)
• Low “life cycle costs”
• Minimizes the gas leakage rate (target < 0.1%/year) -> no need to replenish gas during the service life
• A great variety of cable connection options
• Straight forward and safe cable testing from the front end, with the cables connected
• User-friendly operator interface
• Straightforward operations management
• Considers current environmental issues
• Reduced space requirements (reduced depth) -> reduced investment costs

The main features of 12kV C-GIS

• Dry gas insulation.
• Ensuring insulation integrity under zero gauge pressure.
• Low partial discharge levels in components and the entire apparatus.
• Natural heat dissipation.
• Full cabinet is withdrawable.
• Laser welding, helium leak testing, professional manufacturing.
• High-voltage primary components are maintenance-free for their entire lifespan.
• Maintenance personnel require lower skill levels and reduced job demands.
• Mitigating the risk of faults caused by human error during maintenance.
• The work content and environment for maintenance personnel are also improved.
• The high-voltage live parts are completely sealed or enclosed within grounded enclosures, ensuring a fully closed and insulated design.
• Simplified Five-Protection Interlocking.

The main features of 40.5 C-GIS

• Voltage up to 12-40.5kV, current up to 3150A, 2500A.
• SF6 gas-insulated, vacuum circuit breaking.
• 40.5kV dual gas-compartment modular structure, 12kV single gas-compartment structure.
• All high-voltage circuits are fully gas-sealed.
• Metal enclosed cabinet housing.
• Primary high-voltage live parts are fully sealed and not affected by the environment.
• Four compartments, among them, the VCB compartment can be replaced without interrupting the busbar power supply when needed.
• Solid-sealed pole VCB, longitudinal magnetic field arc extinguishing; Three-position switch (close-isolate-ground).
• Typical cabinet width for 40.5kV: 1250A 600mm, 2500A 800mm.
• In case of emergency, there is no need to move the cabinets on both sides; the middle cabinet can be removed and replaced.
• Complies with German DIN standards for plug-in connectors.
• Latest vacuum circuit breaking technology.
• Solid-sealed pole design.
• Highly reliable spring operating mechanism.
• Breaking capacity up to 31.5kA.

Environmental Protection

• SN2X does not use SF6 gas,it ensures that the insulation and conductivity of the switchgear are not affected by the environment and pollution. It also ensures that the insulation gas inside the switchgear does not have an adverse impact on the environment. This makes the product an environmentally friendly solution and the industry a sustainable one.
• When using dry air as the gas insulation, compared to similar products, SN2X inflatable switchgear can reduce the use of SF6 by an average of 0.5-1.2 kg per unit, which is equivalent to reducing CO2 emissions by 11.9-28.7 tons!
• SN2X compared to air-insulated cabinets, saves an average of 50% of operational energy consumption.
• SN2X compared to air-insulated cabinets, saves 40%-45% of space and 10%-25% of materials.