XGN2-12 Ring Main Unit (RMU)

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 Ring Main Unit (RMU) is a high-performance, metal-enclosed, and air-insulated switchgear 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.

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:

ItemUnitXGN15-12(F) / 630-20XGN15-12(F.R)/T125-31.5
Rated VoltagekV1212
Rated CurrentA630125
Rated FrequencyHz5050
Rated Frequency Withstand VoltagekV42/4842/48
Rated Impulse Withstand VoltagekV75/8575/85
Rated Active Load Breaking CurrentA630
Closed-Loop Distribution Circuit CurrentA630
Short-Circuit Making Current (Peak)kA5080
Peak Withstand CurrentkA5050
Short-Time Withstand CurrentkA2020
Short Circuit Durations44
Rated SF₆ Gas Pressure (20°C)MPa0.040.04
Loop ResistanceµΩ≤200≤400
Mechanical Endurance (LBS/Earthing)Cycles5000/30005000/3000
Short-Circuit Breaking CurrentkA20/5031.5/50
Transfer CurrentA1750
Protection DegreeIP4XIP4X
Technical specifications table for XGN2-12 Ring Main Unit

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

FeatureMetal-Clad Switchgear (e.g., KYN28-24)Ring Main Unit (XGN2-12)Gas-Insulated Switchgear (e.g., SRM6-12)
Insulation MediumAirAirSF₆ Gas
FootprintLargerCompactVery Compact
Typical ApplicationPrimary DistributionSecondary DistributionHarsh/Space-Constrained Sites
Maintenance NeedsHigherLowerVery Low
Comparison of Metal-Clad, Ring Main Unit, and Gas-Insulated Switchgear types

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)

1. What is the rated voltage and current for the XGN2-12 RMU?

The XGN2-12 RMU supports a rated voltage of 12kV and rated currents typically up to 630A, depending on specific configuration models.

2. Can the XGN2-12 RMU be integrated into smart grid systems?

Yes, it is designed for smart grid compatibility with provisions for remote monitoring, SCADA integration, and automation enhancements.

3. What maintenance is required for the XGN2-12 Ring Main Unit?

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.

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