- Introduction to PINEELE XGN2-12 Ring Main Unit (RMU)
- Key Features of the PINEELE XGN2-12 Ring Main Unit
- Modular Flexibility
- Advanced Switching Mechanisms
- High-Level Protection
- Operating Conditions for the PINEELE XGN2-12 RMU
- Technical Specifications Table
- Structural and Functional Highlights
- Metal-Enclosed Structure
- High Insulation Integrity
- Smart Grid Readiness
- Industry-Leading Advantages of PINEELE RMU
- Frequently Asked Questions (FAQ)
- 1. What makes the PINEELE XGN2-12 Ring Main Unit ideal for urban distribution networks?
- 2. Can the PINEELE RMU be integrated into smart grid systems?
- 3. How does the PINEELE Ring Main Unit ensure operational safety?
- Future-Oriented Energy Distribution Solutions
Introduction to PINEELE XGN2-12Ring Main Unit(RMU)
ThePINEELE XGN2-12 Ring Main Unit (RMU)is a high-performance, metal-enclosed, air-insulated switchgear designed for12kV three-phase AC 50Hz power distribution systems. Engineered with precision for environments requiring frequent operations, the RMU utilizes advanced vacuum circuit breakers and rotating-style isolation switches to ensure optimal electrical performance, safety, and reliability.
ThisRing Main Unitadheres to bothnational (GB3906)andinternational (IEC298)standards, with protection ratings up toIP4X, making it the ideal solution for medium-voltage indoor power systems. With enhanced mechanical interlocking and advanced insulation technology, the PINEELE XGN2-12 RMU delivers robust, flexible solutions tailored for today’s evolving power infrastructure.
Key Features of the PINEELE XGN2-12 Ring Main Unit
Modular Flexibility
- The RMU offers a highlymodular and expandable design, using sulfur hexafluoride (SF₆) as the main insulation medium, and air insulation for other compartments.
- Its compact footprint supports flexible deployment inurban power networks,industrial terminals, andcritical infrastructure.
Advanced Switching Mechanisms
- The main switch options include theZN28A-12 segmental vacuum circuit breaker, theZN28-12 integral vacuum breaker, and theZN63-12 (VS1)breaker, combined withCD17/CD10 electromagneticorCT17/CT19 springoperation mechanisms.
- The isolation switch utilizesGN30-10 rotatingorGN22-10 high-currentisolation technologies.
High-Level Protection
- All doors, grounding switches, and circuit mechanisms are equipped with robustmechanical interlocking systems, fulfilling the “Five-Prevention Safety” principle.
Operating Conditions for the PINEELE XGN2-12 RMU
The PINEELERing Main Unitis built for harsh environments and conforms to strict operating parameters:
- Ambient Temperature: -25℃ to +40℃
- Altitude: ≤1000m
- Humidity: ≤95% daily average, ≤90% monthly average
- Vapor Pressure: ≤2.2×10³ MPa
- Seismic Resistance: ≤8 degree
- Installation Site: No fire, explosive risks, severe pollution, chemical corrosion, or strong vibration
Technical Specifications Table
| Item | Unit | XGN15-12(F) / 630-20 | XGN15-12(F.R)/T125-31.5 |
|---|---|---|---|
| Tension nominale | kV | 12 | 12 |
| Courant nominal | A | 630 | 125 |
| Fréquence nominale | Hz | 50 | 50 |
| Rated Frequency Withstand Voltage | kV | 42/48 | 42/48 |
| Rated Impulse Withstand Voltage | kV | 75/85 | 75/85 |
| Rated Active Load Breaking Current | A | 630 | — |
| Closed-Loop Distribution Circuit Current | A | 630 | — |
| Short-Circuit Making Current (Peak) | kA | 50 | 80 |
| Peak Withstand Current | kA | 50 | 50 |
| Short-Time Withstand Current | kA | 20 | 20 |
| Short Circuit Duration | s | 4 | 4 |
| Rated SF₆ Gas Pressure (20°C) | MPa | 0.04 | 0.04 |
| Loop Resistance | µΩ | ≤200 | ≤400 |
| Mechanical Endurance (LBS/Earthing) | Cycles | 5000/3000 | 5000/3000 |
| Short-Circuit Breaking Current | kA | 20/50 | 31.5/50 |
| Transfer Current | A | — | 1750 |
| Protection Degree | — | IP4X | IP4X |
Structural and Functional Highlights
Metal-Enclosed Structure
ThePINEELE Ring Main Unitis designed as a fully enclosed metal cabinet. ItsIP2X/IP4X protection levelprevents accidental contact and ingress of foreign materials, enhancing operational safety.
High Insulation Integrity
Utilizingporcelain support insulators(≥8000N) and aminimum insulation distanceof 125mm, the system achieves higher dielectric strength and operational stability under stress.
Smart Grid Readiness
With built-in sensor compatibility and protective relays, the RMU isready for digital substations, offeringreal-time dataandremote control capabilities.
Industry-Leading Advantages of PINEELE RMU
- Compliance withGB3906 and IEC298
- Flexible breaker configurations for various operational needs
- SF₆ and air-insulated dual structure forcompactness and safety
- Protection against seismic activity, humidity, and pollution
- Meets growing demand forsmart and green grid infrastructure
Frequently Asked Questions (FAQ)
1. What makes the PINEELE XGN2-12 Ring Main Unit ideal for urban distribution networks?
The compact andmodular designof the PINEELERing Main Unitmakes it perfect for tight urban spaces where traditional switchgear systems are too large. ItsSF₆ insulation, high protection class, and maintenance-free design reduce installation costs and long-term operational challenges.
2. Can the PINEELE RMU be integrated into smart grid systems?
Yes. ThePINEELE XGN2-12 Ring Main Unitis designed withsensor interfaces and intelligent relays, supporting full automation, remote diagnostics, and predictive maintenance features, all crucial for smart grid integration.
3. How does the PINEELE Ring Main Unit ensure operational safety?
Safety is ensured throughmechanical interlocks,IP-rated enclosures, andfive-prevention logic, which prevents unsafe operations such as opening a live circuit or misconfiguring the grounding mechanism.
Future-Oriented Energy Distribution Solutions
As power grids shift towardsrenewable energy,digital monitoring, andspace-saving infrastructure, the demand forRing Main Unitsthat are bothtechnologically advancedandscalablecontinues to grow. ThePINEELE XGN2-12 RMUis engineered to meet these challenges head-on, offering utilities, industries, and municipalities a powerful tool for sustainable and smart energy distribution.
