XGN15-12 Fixed-Type SF6 Ring Main Unit (Metering Cabinet）

The XGN15-12 is an indoor, fixed-type, metal-enclosed AC switchgear designed for 12kV/50Hz three-phase power systems. It uses SF6 gas-insulated load break switches as its core component, making it a compact, reliable solution for ring network power supply and terminal distribution applications. Widely used in urban grid renovation, industrial parks, commercial buildings, and prefabricated substations, it serves as a key control and protection unit for medium-voltage distribution networks.

• SF6 Gas Insulation Technology

     Utilizes SF6 gas as both insulating and arc-extinguishing medium, ensuring reliable performance and long service life with minimal maintenance.

     Sealed switch units with high-quality gas tightness prevent leakage, maintaining stable performance over decades of operation.

• High Safety & Compliance   

    Equipped with a complete five-prevention interlock system to eliminate misoperations such as earthing with load, closing with earthing, and door opening with the switch closed.   

    Compliant with IEC 62271-200 and GB 3906 standards, with rigorous type tests including short-circuit withstand, dielectric strength, and arc resistance.

• Compact & Modular Design

     Space-saving footprint with standardized dimensions, ideal for installation in compact substations and urban distribution networks.

     Modular structure supports flexible configuration of incoming, outgoing, metering, and protection units to meet diverse project needs.

• Durable & Low-Maintenance Performance

      Rugged metal-enclosed construction provides excellent protection against dust, humidity, and corrosion, suitable for long-term indoor use.

      Fixed-type design with few moving parts ensures high mechanical reliability, reducing on-site maintenance requirements and lifecycle costs.

• Urban and rural distribution ring main units
• Industrial plants, mining facilities, and commercial buildings
• Prefabricated compact substations and box-type substations
• High-rise buildings, shopping malls, and residential complexes
• Cable branch connections and line sectionalizing in distribution networks

Each XGN15-12 RMU undergoes rigorous testing, including dielectric withstand, short-circuit, mechanical endurance, and gas tightness tests. Manufactured in accordance with international and national standards, it provides a safe, efficient, and cost-effective solution for medium-voltage distribution automation projects.