kstone is a recommended manufacturer of mixed gas equipment for China State Grid, according to the 2022 (290) document.
This industrial-grade gas mixing unit is designed for SF6/N2 mixture inflation, supporting applications like SF6/CF4, SF6/AIR, and C4F7N/CO2 blending. With a 10Nm³/h mixing capacity, it's optimized for State Grid China's environmental initiatives, such as 3:7 SF6/N2 ratio gas for GIS systems. The device integrates vacuum pumping, precise gas mixing, and charging functions via a piston compressor system, filtration module, and intelligent control valves.
| Component | SF6 Compressor | N2 Compressor | Mixed Gas Charging Compressor |
|---|---|---|---|
| Type | Air-cooled Piston | Air-cooled Piston | Air-cooled Piston |
| Theoretical Flow Rate | 14 m³/h | 14 m³/h | 30 m³/h |
| Max. Discharge Pressure | 2 MPa | 2 MPa | 5 MPa |
| Allowable Working Pressure | 1 MPa | 1 MPa | 1 MPa |
| Suction Pressure Range | 53 kPa ~ 0.5 MPa | 53 kPa ~ 0.5 MPa | 53 kPa ~ 0.5 MPa |
| Max. Discharge Temperature | 130°C | 130°C | 130°C |
| Lubrication System | Oil-free | Oil-free | Oil-free |
| Power Rating | 2.2 kW (3Φ 380V 50Hz) | 2.2 kW (3Φ 380V 50Hz) | 11 kW (3Φ 380V 50Hz) |
| Vacuum Pump | 54 m³/h pumping rate | - | - |
| Ultimate Vacuum | ≤10 Pa (PRO-200 oil lubricated) | - | - |
| Parameter | Specification |
|---|---|
| Model Code | KSLF-28/30WY20/NZ |
| Nominal Mixing Capacity | 30 m³/h |
| Applicable Gas Mixtures | SF6/N2, SF6/CF4, C4F7N/CO2, etc. |
| Control System | PLC-based with touchscreen interface |
| Filtration Accuracy | 0.1μm (particulate) / 3ppm (moisture) |
| Dimensions (L*W*H) | 1800*1000*1500mm |
| Power Supply | 3Φ 380V 50Hz, total 15.4kW |

