Tel: +86-13505879225丨Email: zhangting@deyanelectric.com
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High Voltage Ring Main Unit (RMU) | Reliable Power Distribution Solution
——Dual Power Supply · Compact Design · Global Compliance——
Core Features
Dual Power Redundancy: Seamless switch to backup lines during outages (e.g., metro systems).
Compact & Robust: 40% smaller than traditional switchgear, IP67 protection for harsh environments.
Safety & Compliance: SF6 gas insulation, mechanical interlocks, and IEC/UL/GB certifications.
Cost-Effective: 30% lower lifecycle costs with minimal maintenance.
Target Industries
Urban Infrastructure: Metro systems, smart grids, data centers.
Industrial Plants: Motor control, CNC machines, welding systems.
Renewable Energy: Solar/wind farm grid connections.
Why Choose Us?
Global Adaptation: Supports ANSI, IEC, and GB standards.
Fast ROI: 80% clients recover costs within 10 months.
24/7 Support: Local technicians in 50+ countries.
Technical Deep Dive
Structure & Components
Component | Description | Source |
Load Switch: SF6 or vacuum insulation, 3-position (ON/OFF/EARTH), handles up to 630A.
Fuse Protection: High-voltage fuses (125A max) for short-circuit protection; triggers automatic switch tripping.
Enclosure: Stainless steel (IP54/IP67) or galvanized steel (IP32), anti-corrosion design.
Control System: Manual/spring-operated or motorized mechanisms with mechanical interlocks.
Technical Specifications
| Parameter | Value | Standards |
| Rated Voltage | 10kV/12kV (±20%) | IEC 60038, GB 3906 |
| Insulation Medium | SF6 Gas/Air/Solid | IEC 62271-200 |
| Operating Temperature | -40°C to +55°C | IEC 60694 |
| Protection Class | IP32 (indoor) / IP67 (outdoor) | IEC 60529 |
| Fault Current | 20kA (1s) | IEEE C37.60 |
Operation Principle
Ring Network Design: Forms a closed-loop grid; if Line A fails, power flows via Line B.
Load Switching: SF6 load switches manage normal currents; fuses interrupt faults (≤125A).
Safety Interlocks: Prevents accidental contact with live parts during maintenance.
Regional Customization Guide
| Region | Key Requirements | Our Solution |
| North America | UL 508A, NEMA 4X enclosures | IP67 stainless steel + UL fuses |
| Europe | IEC 61439, CE/UKCA marking | SF6 gas insulation + multilingual HMI |
| Middle East | High-temperature resistance (55℃) | Enhanced cooling + desert-proof coating |
| Asia-Pacific | GB/T 15576, THDi<8% | Harmonic filters + dual-language labels |
Case Study: Metro System in Mexico
| Metric | Before RMU | After RMU | Improvement |
| Power Outages | 5/month | 0 | 100% reliability |
| Maintenance Cost | $15k/year | $3k/year | 80% reduction |
| ROI Period | — | 8 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 long does installation take?
A: 4-8 hours for standard units with pre-configured cables.
Q2: Can RMU work with solar inverters?
A: Yes, with harmonic filters (THDi<5%).
Q3: Maintenance frequency?
A: SF6 units: 5-year intervals; air-insulated: 2-year checks.
High Voltage Ring Main Unit (RMU) | Reliable Power Distribution Solution
——Dual Power Supply · Compact Design · Global Compliance——
Core Features
Dual Power Redundancy: Seamless switch to backup lines during outages (e.g., metro systems).
Compact & Robust: 40% smaller than traditional switchgear, IP67 protection for harsh environments.
Safety & Compliance: SF6 gas insulation, mechanical interlocks, and IEC/UL/GB certifications.
Cost-Effective: 30% lower lifecycle costs with minimal maintenance.
Target Industries
Urban Infrastructure: Metro systems, smart grids, data centers.
Industrial Plants: Motor control, CNC machines, welding systems.
Renewable Energy: Solar/wind farm grid connections.
Why Choose Us?
Global Adaptation: Supports ANSI, IEC, and GB standards.
Fast ROI: 80% clients recover costs within 10 months.
24/7 Support: Local technicians in 50+ countries.
Technical Deep Dive
Structure & Components
Component | Description | Source |
Load Switch: SF6 or vacuum insulation, 3-position (ON/OFF/EARTH), handles up to 630A.
Fuse Protection: High-voltage fuses (125A max) for short-circuit protection; triggers automatic switch tripping.
Enclosure: Stainless steel (IP54/IP67) or galvanized steel (IP32), anti-corrosion design.
Control System: Manual/spring-operated or motorized mechanisms with mechanical interlocks.
Technical Specifications
| Parameter | Value | Standards |
| Rated Voltage | 10kV/12kV (±20%) | IEC 60038, GB 3906 |
| Insulation Medium | SF6 Gas/Air/Solid | IEC 62271-200 |
| Operating Temperature | -40°C to +55°C | IEC 60694 |
| Protection Class | IP32 (indoor) / IP67 (outdoor) | IEC 60529 |
| Fault Current | 20kA (1s) | IEEE C37.60 |
Operation Principle
Ring Network Design: Forms a closed-loop grid; if Line A fails, power flows via Line B.
Load Switching: SF6 load switches manage normal currents; fuses interrupt faults (≤125A).
Safety Interlocks: Prevents accidental contact with live parts during maintenance.
Regional Customization Guide
| Region | Key Requirements | Our Solution |
| North America | UL 508A, NEMA 4X enclosures | IP67 stainless steel + UL fuses |
| Europe | IEC 61439, CE/UKCA marking | SF6 gas insulation + multilingual HMI |
| Middle East | High-temperature resistance (55℃) | Enhanced cooling + desert-proof coating |
| Asia-Pacific | GB/T 15576, THDi<8% | Harmonic filters + dual-language labels |
Case Study: Metro System in Mexico
| Metric | Before RMU | After RMU | Improvement |
| Power Outages | 5/month | 0 | 100% reliability |
| Maintenance Cost | $15k/year | $3k/year | 80% reduction |
| ROI Period | — | 8 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 long does installation take?
A: 4-8 hours for standard units with pre-configured cables.
Q2: Can RMU work with solar inverters?
A: Yes, with harmonic filters (THDi<5%).
Q3: Maintenance frequency?
A: SF6 units: 5-year intervals; air-insulated: 2-year checks.
| | No.60, Binhai South Second Road, Economic Development Zone, Yueqing City, Zhejiang Province, China |
| | +86-13505879225 |
| |