Introduction to XGN2-12 Ring Main Unit
In modern electrical distribution systems, Ring Main Units (RMUs) play a crucial role in ensuring network reliability and operational efficiency. The XGN2-12 Unidad principal de anillo (RMU) is a high-performance, metal-enclosed, and air-insulated aparamenta solution specifically designed for medium-voltage distribution applications up to 12kV. It is engineered to meet the highest standards of safety, stability, and flexibility, offering robust performance in a wide variety of environments.
Applications of XGN2-12 Ring Main Unit
The XGN2-12 RMU is widely utilized in the following sectors:
- Urban and Rural Power Distribution Networks
- Industrial and Mining Enterprises
- Transportation Infrastructure (Airports, Railways, Subways)
- Renewable Energy Projects (Wind and Solar Farms)
- Commercial Complexes and Data Centers
Its compact design, coupled with modular flexibility, makes it an ideal choice for locations where space, operational safety, and maintenance accessibility are critical.
Market Trends and Background
According to IEEE and IEEMA reports, the global demand for medium-voltage switchgear is steadily growing, driven by urbanization, renewable energy integration, and modernization of aging grids. RMUs like the XGN2-12 are preferred in modern networks because they provide decentralized control, faster fault management, and seamless integration into smart grid architectures (source).
As digitalization and grid automation increase, the importance of compact, reliable RMUs in distribution systems has never been greater.
Technical Specifications of XGN2-12 RMU
The XGN2-12 series demonstrates superior technical capabilities:
| Item | Unit | XGN15-12(F) / 630-20 | XGN15-12(F.R)/T125-31.5 |
|---|---|---|---|
| Tensión nominal | kV | 12 | 12 |
| Rated Current | A | 630 | 125 |
| Frecuencia nominal | 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 |
Key Features and Benefits
- Compact Size and Modular Design: Enables flexible layouts and easy system expansions.
- High Operational Safety: Achieves IP4X protection level, ensuring personnel and system safety.
- Reliable Performance: Capable of withstanding high fault currents with robust mechanical endurance.
- Eco-Friendly: Air insulation eliminates the need for heavy SF₆ gas reliance compared to GIS alternatives.
- Ease of Maintenance: Front-accessible operations and simplified maintenance procedures.
Comparison with Other Switchgear Types
| Feature | Metal-Clad Switchgear (e.g., KYN28-24) | Ring Main Unit (XGN2-12) | Gas-Insulated Switchgear (e.g., SRM6-12) |
| Insulation Medium | Air | Air | SF₆ Gas |
| Footprint | Larger | Compact | Very Compact |
| Typical Application | Primary Distribution | Secondary Distribution | Harsh/Space-Constrained Sites |
| Maintenance Needs | Higher | Lower | Very Low |
Selection and Purchase Guidance
When selecting an RMU like the XGN2-12, consider the following:
- System Voltage and Current Requirements
- Space Constraints at Installation Site
- Expected Fault Current Levels
- Automation and Remote Monitoring Needs
- Compliance with Local Standards (e.g., IEC 62271-200)
For large-scale projects or special environmental conditions, consulting technical experts at PINEELE can ensure optimal configuration and long-term performance.
Frequently Asked Questions (FAQ)
The XGN2-12 RMU supports a rated voltage of 12kV and rated currents typically up to 630A, depending on specific configuration models.
Yes, it is designed for smart grid compatibility with provisions for remote monitoring, SCADA integration, and automation enhancements.
Maintenance is minimal due to its robust construction. Routine inspections, mechanical checks, and cleaning of insulators are usually sufficient to ensure long-term reliability.
By combining innovation, engineering expertise, and a strong commitment to quality, PINEELE’s XGN2-12 Ring Main Unit is a proven solution for modern medium-voltage networks.