Our Inflatable ring main switchgear delivers enterprise-grade performance with SF6 gas-insulated technology. This medium-voltage distribution system has a fully sealed stainless steel casing that works at 12–36kV. Compared to other systems, it takes up 60–70% less space when installed. It's accepted in more than 100 municipal and commercial projects because it has an IP67 grade for protection, can run for 25 years or more without any upkeep, and is available 99.9% of the time in harsh settings. Every unit we make is backed by our 15 top engineers and 18 patents.
This is a game-changing solution for modern power distribution.
You get a medium-voltage electrical system with sulphur hexafluoride gas insulation that is built into small, stackable pieces. Power can flow in more than one way because of the "ring" shape. If one part breaks or needs repair, your supply keeps going without stopping.
When compared to standard air-insulated options, the SF6-filled sections offer better insulation. When gas is present, your live busbars and switches stay locked.
This design solves your most pressing challenges:
You're not just buying equipment. You're investing in resilient electrical infrastructure that adapts to your growing needs.

Urban Distribution Networks
The power grid in your city needs to be reliable. These systems are put in small substations that serve business districts, industrial zones, and places with a lot of people living in them. The technology is available 99.9% of the time, even in difficult seaside areas with a lot of salt.
The ring arrangement is useful for manufacturing plants, computer centres, and places where renewable energy is integrated. You keep the power on even when equipment is being fixed or when it goes out for no reason. As your building grows, the modular form can be changed to fit.
Airports, hospitals, shopping malls, and schools all need systems that work well and don't need much upkeep. Our inflatable ring main switchgear works great in tight areas and underground sites where regular equipment just won't fit.
Desert weather? Humidity in the tropics? Temperatures in the Arctic? Normal hardware breaks down over time, but the sealed SF6 sections keep working at the same level. You get reliable operation in areas with high and low temperatures and earthquakes.

| Parameter | Specification |
|---|---|
| Voltage Rating | 12kV - 36kV |
| Current Rating | 630A - 1250A |
| Short-circuit Current | Up to 25kA |
| SF6 Gas Pressure | 1.3-1.5 bar gauge |
| Gas Leak Rate | ≤0.5% per year |
| Protection Rating | IP54/IP65/IP67 |
| Unit Width | 400-800mm |
| Height | <2000mm |
| Operating Temperature | -30°C to +40°C |
| Expected Lifespan | 25-30 years |
| Dielectric Strength | 2.5x that of air |
| Housing Material | Stainless steel/Aluminum |
| Conductor Material | High-grade copper |
Fully Insulated and Sealed
External dust, moisture, and small animals can't penetrate your system. With IP67 ingress protection, you're covered even in the harshest environments. This means fewer unexpected shutdowns and lower replacement costs.
Maximum Safety Standards
No exposed live parts on the exterior protects your personnel. Comprehensive safety pressure-relief channels are built in. You meet stringent safety regulations without compromise.
Compact and Maintenance-Free
Space is expensive. Our compact structure saves valuable real estate in your facility. The stable insulating properties of SF6 gas enable maintenance-free operation throughout the entire service life. You redirect maintenance budgets to other priorities.
Superior Performance Characteristics
Certified Quality You Can Trust
All our products meet international standards with ISO 9001, ISO 14001, and OHSAS 45001 certifications. Our low-voltage components carry National CCC Mandatory Certification. Every unit undergoes rigorous testing in our professional quality inspection laboratory.

Advanced Production Capabilities
We operate over 120 sets of advanced machinery, including:
Quality Management System
We implement strict monitoring from raw material procurement through installation. Our "zero defects" philosophy operates at every stage. Nothing leaves our factory without passing comprehensive quality checks aligned with ISO9001 standards.
Technical Innovation
With 15 senior engineers, over 30 intermediate technicians, and 17 senior technicians on our team, you get cutting-edge solutions. Our 18 patents demonstrate our commitment to technological advancement.

Over 20 years, we've completed hundreds of key power projects:
Municipal Engineering
Commercial Real Estate
Industrial Projects
These projects showcase our ability to deliver ahead of schedule while maintaining exceptional quality standards.

Q: What is the expected lifespan of SF6 gas in sealed compartments?
SF6 gas maintains its insulating properties for 25-30 years in properly sealed systems. Leak rates stay below 0.5% annually. You verify this through periodic gas analysis and pressure monitoring per IEC 62271-4 guidelines. This longevity means decades of reliable operation without gas replacement.
Q: How does the equipment perform during seismic events?
Your system remains operational during earthquakes. We conduct seismic qualification testing per IEEE 693 standards. The equipment demonstrates capability during seismic activity up to specified acceleration levels. Flexible gas connections and robust housing design prevent gas leaks even when the ground is shaking.
Q: What maintenance procedures are required for optimal performance?
You'll appreciate the minimal maintenance requirements:
This is significantly reduced compared to air-insulated alternatives that need frequent cleaning and component replacement. Your maintenance team focuses on more critical tasks.
Q: Can existing ring main units be expanded or reconfigured?
Absolutely. The modular design enables seamless expansion through standardized interfaces. You can add new feeder units or reconfigure your ring topology without major system shutdown. This flexibility supports your facility's growth without massive capital expenditure.
Q: What environmental considerations apply to SF6 gas handling?
We follow strict environmental protocols. SF6 gas recovery and recycling procedures include gas reclamation during maintenance and leak detection programs. End-of-life gas recovery achieves over 95% capture rates. You comply with F-gas regulations and greenhouse gas reduction initiatives while maintaining superior electrical performance.
Q: Is the system suitable for extreme weather conditions?
Yes. The sealed design protects against temperature extremes, humidity, salt spray, and dust. Whether you're in tropical, arctic, or desert climates, your product maintains consistent performance. The IP67 rating ensures operation in conditions that would destroy conventional equipment.
Comprehensive Solutions
We don't just sell equipment. You get complete transformer and distribution solutions tailored to your specific requirements. We assist with procurement of additional products, providing convenient one-stop service.
Customer-Focused Philosophy
"Technology first, service paramount, and integrity fundamental" guides everything we do. We prioritize your interests, invest heavily in R&D, and deliver pragmatic, innovative solutions. Your success is our success.
Global Standards Compliance
Our products meet IEC 62271 series, IEC 60694, IEEE C37 series, GB/T, and BS standards. You're assured of quality recognized worldwide. Installation, commissioning, and support follow international best practices.
Tailored Engineering
Every region has unique requirements. We provide customized solutions suited to your environmental conditions, voltage standards, and regulatory framework. Our technical team works directly with you to optimize system design.

Ready to upgrade your Inflatable ring main switchgear power distribution system? Email us at tuojie@electricinchina.com for customized solutions and expert guidance today.




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