Tel: +86-13505879225丨Email: zhangting@deyanelectric.com
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SF6 Gas-Insulated Ring Main Unit (RMU) | Fully Sealed & Maintenance-Free
——Dual Power Supply · Compact Design · Global Compliance——
Core Features
Fully Sealed Design: All live parts encapsulated in stainless steel gas chambers (IP67 protection), immune to dust, moisture, and flooding .
Maintenance-Free: SF6 gas insulation ensures 30+ years lifespan with zero routine upkeep .
Dual Power Redundancy: Automatic switch to backup lines during faults, achieving 100% uptime .
Global Compliance: Meets IEC 62271, GB 3906, UL 508A, and ANSI standards.
Target Industries
Urban Infrastructure: Metro systems, smart grids, hospitals.
Industrial Plants: Motor control, mining operations, data centers.
Renewable Energy: Solar/wind farm grid connections, energy storage systems.
Why Choose Us?
Global Adaptation: Customized for IEC, ANSI, or GB standards.
Fast ROI: 80% clients recover costs within 10 months via reduced downtime and penalties.
24/7 Support: 50+ certified engineers worldwide, 15-day delivery.
Technical Deep Dive
1. Structure & Innovation
| Component | Technical Highlights |
| Gas Chamber | 3mm stainless steel, SF6 pressure 1.3 bar at 20°C, ≤0.05% annual leakage . |
| Load Switch | SF6-insulated 3-position (ON/OFF/EARTH), 630A rating, 5000+ mechanical cycles . |
| Fuse System | High-voltage fuse (125A max) with auto-tripping for short-circuit protection . |
| Control Unit | Manual/motorized operation, mechanical interlocks to prevent misoperation . |
| Sealing Tech | Patented dual-seal design with pressure relief channels (CN 222381177 U) . |
2. Technical Specifications
| Parameter | Value | Standards |
| Rated Voltage | 12kV (±20%) | IEC 60038, GB 3906 |
| Rated Current | 630A (switch), 125A (fuse) | IEC 62271-200 |
| Short-Circuit Withstand | 25kA/4s (20kA for fuse) | IEEE C37.60 |
| Operating Temperature | -40°C to +55°C | IEC 60694 |
| Protection Class | IP67 (outdoor), IP4X (indoor) | IEC 60529 |
3. Operation Principle
- Ring Network Redundancy: Forms closed-loop grids; switches to backup lines within seconds during faults .
- Arc Quenching: SF6 gas rapidly extinguishes arcs during switching, ensuring safety .
- Pressure Management: Patented gas injection ports and pressure relief channels prevent over-pressurization .
4. Regional Customization
| Region | Key Requirements | Our Solution |
| North America | UL 508A, NEMA 4X enclosures | Stainless steel IP67 + UL fuses |
| Europe | IEC 61439, CE/UKCA marking | SF6-insulated + multilingual HMI |
| Middle East | High-temperature (55°C) resistance | Enhanced cooling + desert-proof coating |
| Asia-Pacific | GB/T 15576, THDi<8% | Harmonic filters + dual-language labels |
5. Case Study: Solar Farm in Spain
| Metric | Before RMU | After RMU | Improvement |
| Grid Downtime | 8 hours/month | 0 | 100% reliability |
| Energy Loss | 12% | 4% | 67% reduction |
| ROI Period | — | 9 months | Fast payback |
Global Services & Compliance
1. Certifications
CE, UL, IECEx, UKCA, RoHS, ISO 9001/14001
2. Logistics & Support
- Delivery: 15 days (standard), 7 days (urgent).
- Documentation: Multilingual manuals, test reports, DoC.
- Training: Onsite installation & safety training.
3. Interactive Tools
1. Fault Current Calculator: Input grid data → Get RMU sizing recommendations.
2. Compliance Checker: Select country → Auto-generate certification list.
FAQ
Q1: How to verify SF6 gas sealing?
A: Annual leakage rate ≤0.05% via pressure sensors (patented monitoring ports) .
Q2: Compatibility with smart grids?
A: Yes, supports IoT integration (Modbus, BACnet) for remote monitoring .
Q3: Environmental impact of SF6?
A: Our SF6 recovery system ensures 99.9% gas reuse, aligned with EU F-Gas regulations .
SF6 Gas-Insulated Ring Main Unit (RMU) | Fully Sealed & Maintenance-Free
——Dual Power Supply · Compact Design · Global Compliance——
Core Features
Fully Sealed Design: All live parts encapsulated in stainless steel gas chambers (IP67 protection), immune to dust, moisture, and flooding .
Maintenance-Free: SF6 gas insulation ensures 30+ years lifespan with zero routine upkeep .
Dual Power Redundancy: Automatic switch to backup lines during faults, achieving 100% uptime .
Global Compliance: Meets IEC 62271, GB 3906, UL 508A, and ANSI standards.
Target Industries
Urban Infrastructure: Metro systems, smart grids, hospitals.
Industrial Plants: Motor control, mining operations, data centers.
Renewable Energy: Solar/wind farm grid connections, energy storage systems.
Why Choose Us?
Global Adaptation: Customized for IEC, ANSI, or GB standards.
Fast ROI: 80% clients recover costs within 10 months via reduced downtime and penalties.
24/7 Support: 50+ certified engineers worldwide, 15-day delivery.
Technical Deep Dive
1. Structure & Innovation
| Component | Technical Highlights |
| Gas Chamber | 3mm stainless steel, SF6 pressure 1.3 bar at 20°C, ≤0.05% annual leakage . |
| Load Switch | SF6-insulated 3-position (ON/OFF/EARTH), 630A rating, 5000+ mechanical cycles . |
| Fuse System | High-voltage fuse (125A max) with auto-tripping for short-circuit protection . |
| Control Unit | Manual/motorized operation, mechanical interlocks to prevent misoperation . |
| Sealing Tech | Patented dual-seal design with pressure relief channels (CN 222381177 U) . |
2. Technical Specifications
| Parameter | Value | Standards |
| Rated Voltage | 12kV (±20%) | IEC 60038, GB 3906 |
| Rated Current | 630A (switch), 125A (fuse) | IEC 62271-200 |
| Short-Circuit Withstand | 25kA/4s (20kA for fuse) | IEEE C37.60 |
| Operating Temperature | -40°C to +55°C | IEC 60694 |
| Protection Class | IP67 (outdoor), IP4X (indoor) | IEC 60529 |
3. Operation Principle
- Ring Network Redundancy: Forms closed-loop grids; switches to backup lines within seconds during faults .
- Arc Quenching: SF6 gas rapidly extinguishes arcs during switching, ensuring safety .
- Pressure Management: Patented gas injection ports and pressure relief channels prevent over-pressurization .
4. Regional Customization
| Region | Key Requirements | Our Solution |
| North America | UL 508A, NEMA 4X enclosures | Stainless steel IP67 + UL fuses |
| Europe | IEC 61439, CE/UKCA marking | SF6-insulated + multilingual HMI |
| Middle East | High-temperature (55°C) resistance | Enhanced cooling + desert-proof coating |
| Asia-Pacific | GB/T 15576, THDi<8% | Harmonic filters + dual-language labels |
5. Case Study: Solar Farm in Spain
| Metric | Before RMU | After RMU | Improvement |
| Grid Downtime | 8 hours/month | 0 | 100% reliability |
| Energy Loss | 12% | 4% | 67% reduction |
| ROI Period | — | 9 months | Fast payback |
Global Services & Compliance
1. Certifications
CE, UL, IECEx, UKCA, RoHS, ISO 9001/14001
2. Logistics & Support
- Delivery: 15 days (standard), 7 days (urgent).
- Documentation: Multilingual manuals, test reports, DoC.
- Training: Onsite installation & safety training.
3. Interactive Tools
1. Fault Current Calculator: Input grid data → Get RMU sizing recommendations.
2. Compliance Checker: Select country → Auto-generate certification list.
FAQ
Q1: How to verify SF6 gas sealing?
A: Annual leakage rate ≤0.05% via pressure sensors (patented monitoring ports) .
Q2: Compatibility with smart grids?
A: Yes, supports IoT integration (Modbus, BACnet) for remote monitoring .
Q3: Environmental impact of SF6?
A: Our SF6 recovery system ensures 99.9% gas reuse, aligned with EU F-Gas regulations .
| | No.60, Binhai South Second Road, Economic Development Zone, Yueqing City, Zhejiang Province, China |
| | +86-13505879225 |
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