Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications

June 5, 2026
Latest company blog about Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications
Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications
Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications
Introduction

As the power industry continues to adopt environmentally responsible gas management practices, SF6/N2 mixed gas technology has become increasingly important in GIS substations, gas-insulated switchgear manufacturing and high-voltage electrical applications.

To support the complete lifecycle of mixed-gas operation, utilities and equipment manufacturers require reliable equipment capable of vacuum pumping, gas filling, gas mixing, gas recovery and gas storage.

The KSLH Series SF6/N2 Gas Handling System is designed as an integrated platform that combines these essential functions into one mobile unit, helping operators improve efficiency, reduce gas loss and simplify field operations.


Integrated SF6/N2 Gas Handling Platform
Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications
Main Functions

The KSLH Series integrates multiple gas handling functions within a single system:

  • Vacuum Pumping
  • SF6 Gas Filling
  • N2 Gas Filling
  • SF6/N2 Gas Mixing
  • Gas Recovery
  • Gas Drying & Filtration
  • Gas Storage

This all-in-one design reduces the need for multiple standalone devices and improves operational efficiency during installation, commissioning and maintenance.


Vacuum Pumping for Equipment Preparation

Before gas filling, GIS compartments must be evacuated to remove moisture and air contamination.

The KSLH Series utilizes a high-capacity vacuum system capable of achieving:

  • Ultimate vacuum ≤10 Pa
  • Fast evacuation performance
  • Reliable vacuum holding capability

Proper vacuum treatment ensures gas purity and supports long-term insulation performance.


Vacuum Pumping Function
Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications

Before gas filling, GIS equipment must be evacuated to remove air and moisture contamination.

The KSLH Series features a high-capacity vacuum system capable of achieving:

  • Ultimate vacuum ≤10 Pa
  • Fast evacuation performance
  • Reliable vacuum holding capability

Proper vacuum treatment helps ensure insulation performance and long-term equipment reliability.


SF6/N2 Gas Mixing Function
Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications

The integrated gas mixing function allows operators to prepare SF6/N2 mixed gas according to project requirements.

Key benefits include:

  • Adjustable mixing ratio settings
  • PLC-based automatic control
  • Repeatable gas preparation process
  • Improved operational efficiency

The touch-screen control system provides a clear operating interface and simplifies gas mixing procedures.


Gas Filling Function
Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications

After gas preparation, the system can perform rapid filling operations for GIS equipment and gas-insulated electrical apparatus.

Advantages include:

  • Stable pressure control
  • Fast filling performance
  • Easy operation through PLC control
  • Reduced commissioning time

Gas Recovery and Recycling
Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications

The recovery function enables efficient collection of SF6 or mixed gas during equipment maintenance and servicing.

The system incorporates:

  • High-efficiency compressor technology
  • Gas transfer to storage vessels
  • Reduced gas emissions
  • Support for gas recycling programs

This helps utilities reduce operating costs while meeting environmental requirements.


Gas Drying and Storage

The KSLH Series includes an integrated gas storage and filtration system.

Features include:

  • Self-regenerating drying filter
  • Moisture reduction capability
  • Temporary gas storage
  • Support for gas purification and reuse

The integrated design simplifies gas management throughout the maintenance process.


PLC Touch-Screen Control System

The system utilizes a PLC-based touch-screen interface that visually displays operating procedures and system status.

Benefits include:

  • User-friendly operation
  • Real-time status monitoring
  • Reduced training requirements
  • Improved operational safety

The graphical interface allows operators to switch between different operating modes quickly and efficiently.


Typical Applications
Complete SF6/N2 Gas Handling Solution for GIS and High-Voltage Applications

The KSLH Series is suitable for:

  • GIS Substations
  • Gas-Insulated Switchgear Maintenance
  • High-Voltage Laboratories
  • Utility Service Departments
  • Electrical Equipment Manufacturers
  • SF6/N2 Mixed Gas Projects

Key Advantages
  • Multiple Functions in One System
  • Vacuum, Filling, Mixing and Recovery Integration
  • PLC Touch-Screen Control
  • Air-Cooled Design
  • Self-Regenerating Filtration System
  • Mobile Field Operation
  • Reduced Gas Loss
  • Improved Environmental Compliance

Conclusion

The KSLH Series SF6/N2 Gas Handling System provides a complete solution for vacuum pumping, gas mixing, gas filling, gas recovery, drying and storage.

Designed for GIS equipment and high-voltage electrical applications, the system helps utilities and manufacturers improve gas management efficiency, reduce operational costs and support environmentally responsible maintenance practices.