The Future of Gas Insulated and Solid Insulated Switchgear

 


Introduction

As global industries evolve, the need for safer, more compact, and environmentally sustainable switchgear has never been greater. The debate between Gas Insulated Switchgear (GIS) and Solid Insulated Switchgear (SIS) is central to this transformation. Both technologies serve to protect, control, and isolate electrical equipment, but the trend toward solid insulation marks a significant leap forward in design and sustainability.

At the forefront of this evolution, Degatech Electric Co. Ltd (https://chinadegatech.com/) engineers innovative switchgear that merges reliability, safety, and environmental responsibility.

Understanding GIS and SIS

Gas Insulated Switchgear (GIS) uses SF6 gas to insulate electrical conductors. While effective and compact, SF6 is a potent greenhouse gas with a global warming potential 23,500 times higher than CO₂. In contrast, Solid Insulated Switchgear (SIS) utilizes epoxy resin or polymer materials that encapsulate conductors and contacts, eliminating the need for pressurized gases.

Comparative Analysis: GIS vs. SIS

FeatureGas InsulatedSolid Insulated
Insulation MediumSF6 GasEpoxy Resin / Composite
Environmental ImpactHighLow
MaintenanceRequires Regular Gas CheckMinimal
SizeCompactSlightly Larger
SafetyModerateExcellent
Service Life20–25 years30+ years

The global transition toward solid insulation is clear — it’s safer, cleaner, and more adaptable to modern grid needs.

Key Benefits of Solid Insulated Switchgear

  1. Eco-Friendly Design: Zero greenhouse gas emissions.

  2. Compact and Modular: Saves up to 30% of space compared to traditional air-insulated switchgear.

  3. Enhanced Safety: Fully enclosed design eliminates risk of arc flash exposure.

  4. Long-Term Reliability: Maintenance-free for decades.

  5. Digital Integration: Ready for smart grid applications and IoT-based monitoring.

Degatech’s SIS Solutions

Degatech’s Solid Insulated Switchgear series features modular compartments, digital control panels, and epoxy-molded busbars designed for compact substations, factories, and smart buildings. Their SIS products comply with IEC and GB standards, offering protection ratings up to IP65.

The company’s engineering expertise ensures every product integrates seamlessly with existing networks, minimizing installation and operational costs.

Sustainability and Global Standards

With the increasing enforcement of environmental policies, the use of SF6-free systems is rapidly becoming a global requirement. Degatech’s SIS products not only meet these standards but also help industries achieve carbon-neutral goals without sacrificing performance.

Applications Across Industries

Solid insulated switchgear is now the preferred choice in:

  • Renewable energy installations

  • Data centers and hospitals

  • Rail transportation systems

  • Industrial automation facilities

Conclusion

While GIS played a vital role in the evolution of power systems, solid insulation is the future. With sustainable materials, compact modular designs, and advanced monitoring features, Degatech Electric Co. Ltd (https://chinadegatech.com/) is redefining how the world builds and operates switchgear for a cleaner, smarter energy future.

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