XGN15-12 AC Metal Enclosed Ring Main Unit

The XGN15-12 Ring Main Unit (RMU) is a 12kV air-insulated, fixed-type AC metal-enclosed switchgear designed for reliable medium-voltage power distribution systems. Engineered for 3-phase AC 50Hz networks, it provides safe switching, protection, and power distribution for utility substations, industrial facilities, commercial buildings, and renewable energy projects.

Manufactured by Changyun Intelligent, the XGN15-12 combines a compact modular design, proven air-insulation technology, and comprehensive mechanical interlocking to deliver reliable performance, low maintenance, and long service life. It is suitable for both ring network and radial distribution systems, ensuring continuous and efficient power supply in demanding operating environments.

The standard configuration consists of an Incoming Cabinet and an Outgoing Cabinet, providing flexible feeder arrangements while supporting future system expansion.

• Rated voltage up to 12kV
• Reliable air-insulated technology with no SF₆ gas
• Compact metal-enclosed structure for space-saving installation
• Suitable for ring network and radial distribution systems
• Complete mechanical interlocking for enhanced operational safety
• Modular design for easy installation and maintenance
• Stable switching performance with long mechanical life
• Flexible configuration for utility and industrial applications
• Optional metering, protection relay, and remote monitoring functions
• Low maintenance and reduced total operating costs

The Incoming Cabinet receives power from the upstream distribution network and provides isolation, switching, and protection for the main circuit. It ensures safe operation during maintenance while maintaining stable power transmission.

The Outgoing Cabinet distributes electrical power to transformers, substations, or downstream loads. It supports loop network operation, sectionalizing, and flexible feeder management for reliable power distribution.

A complete mechanical interlocking system prevents incorrect operating sequences, reducing the risk of electrical accidents while protecting both operators and equipment.

Unlike SF₆-insulated switchgear, the XGN15-12 adopts mature air-insulation technology, eliminating greenhouse gas emissions and simplifying maintenance.

The fully grounded metal enclosure provides excellent mechanical strength and protects internal components from dust and accidental contact, making it suitable for demanding industrial environments.

Multiple functional units—including load switch, circuit breaker, metering, bus coupler, and cable connection modules—can be configured to meet different project requirements.

With a simple structure and standardized components, routine inspection and maintenance are straightforward, reducing downtime and lowering the total cost of ownership.

The XGN15-12 Ring Main Unit is widely used in:

• Urban and rural power distribution networks
• Utility substations
• Industrial plants and manufacturing facilities
• Mining operations
• Commercial buildings and shopping centers
• High-rise residential developments
• Data centers
• Airports and transportation infrastructure
• Wind power projects
• Solar photovoltaic power stations
• Renewable energy grid integration

With over 17 years of manufacturing experience, Changyun Intelligent specializes in medium- and low-voltage power distribution equipment for global markets.

We provide:

• Factory-direct pricing
• OEM & ODM manufacturing
• Custom engineering solutions
• Strict quality control
• Fast production and delivery
• Professional technical support
• Global export experience

Our products are widely used in utility, industrial, infrastructure, and renewable energy projects across Asia, the Middle East, Africa, and other international markets.

The XGN15-12 is a 12kV air-insulated medium-voltage switchgear used for switching, protection, and power distribution in ring and radial distribution networks.

The standard model is designed for indoor applications. Outdoor solutions can be customized based on project requirements.

No. It adopts an air-insulated design, making it environmentally friendly and easier to maintain.

Yes. We provide OEM and customized configurations, including protection relays, metering systems, communication interfaces, and remote monitoring functions.

The switchgear is designed and manufactured in accordance with applicable IEC standards and can be customized to meet specific project specifications.

Looking for a reliable 12kV Ring Main Unit manufacturer?

Changyun Intelligent provides high-quality XGN15-12 air-insulated switchgear with factory-direct pricing, customized engineering solutions, and worldwide technical support.

Contact our sales team today to receive a quotation, technical drawings, product catalogs, and project consultation within 24 hours.