The XGN15-12 series SF6 Ring Main Unit (RMU) is a new-generation medium voltage switchgear designed with SF6 load break switches as the main switching component and air insulation structure.

It features a compact, modular, and extendable design, making it ideal for modern ring network power distribution systems and terminal substations.

The switchgear operates in:

• Rated frequency: 50Hz
• Rated voltage: 12kV

It is widely used in urban and industrial power distribution networks, especially in cable ring systems and terminal power supply applications.

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🔹 Key Features

✔ Compact & Modular Design

• Small footprint
• Expandable structure
• Flexible configuration

👉 Ideal for space-limited installations

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✔ SF6 Load Break Switch Technology

• High reliability switching performance
• Excellent arc extinguishing capability

👉 Ensures safe and stable operation

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✔ Metal-Enclosed Structure

• Fully enclosed armored cabinet
• Air-insulated internal structure

👉 Enhances operational safety

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✔ Flexible Circuit Schemes

• Supports terminal and ring network wiring
• Adaptable to various system configurations

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✔ Complete Component Integration

Includes:

• SF6 load break switch
• Earthing switch
• Fuse
• Current/voltage transformers
• Secondary instruments

👉 Meets diverse engineering requirements

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✔ Reliable Mechanical Interlocking

• Built-in interlock system
• Fully meets “Five Prevention” safety requirements:
  • Prevent misoperation
  • Prevent live grounding
  • Prevent incorrect switching sequence

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✔ High Safety & Reliability

• Stable operation in medium voltage systems
• Suitable for continuous power supply environments

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🔹 Structural Design

🔸 Cabinet Type

• Metal-clad enclosed structure
• Air-insulated compartments
• Compact and robust

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🔸 Switching System

• SF6 load break switch as main switch
• Integrated earthing and protection system

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🔸 Protection System

• Fuse protection for transformers
• Complete fault protection capability

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🔸 Expandability

• Modular design allows future expansion
• Suitable for growing power systems

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🔹 Applications

The XGN15-12 RMU is widely used in:

• Urban residential power distribution
• Secondary substations
• Switching stations
• Industrial and mining enterprises
• Commercial buildings
• Airports and metro systems
• Wind power projects
• Hospitals and stadiums
• Railways and tunnels

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🔹 Advantages Summary

• Compact and space-saving design
• High reliability with SF6 switching technology
• Flexible and expandable configuration
• Complete safety interlocking system
• Suitable for ring network and terminal distribution
• Ideal for modern urban power systems

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❓ FAQ

1️⃣ What is an SF6 Ring Main Unit?

An SF6 RMU is a medium voltage switchgear using SF6 gas load break switches for safe and reliable power distribution in ring network systems.

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2️⃣ What voltage level is XGN15-12 suitable for?

It is designed for:
👉 12kV medium voltage power systems

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3️⃣ Where is this RMU commonly used?

It is widely used in:

• Urban power grids
• Industrial plants
• Infrastructure projects

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4️⃣ What are the advantages of SF6 switchgear?

• Excellent insulation performance
• Strong arc extinguishing ability
• High reliability and long service life

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5️⃣ Can the XGN15-12 RMU be expanded?

Yes, it features a modular expandable design, allowing future system expansion.