XGN15-12 SF6 Ring Main Unit – 12kV Indoor RMU for Reliable Medium Voltage Distribution

Name: "XGN15-12 SF6 Ring Main Unit 12kV Metal-Enclosed Switchgear"
Rating: 5 (429 reviews)

XGN15-12 SF6 Ring Main Unit – front view of metal-enclosed cabinet

This SF6 insulated ring main unit (RMU) is designed for three-phase AC power systems rated at 50Hz and 12kV. It integrates load switching, protection, and metering in a compact metal-enclosed structure. The unit is widely used in industrial and civil cable ring networks, secondary substations, and power supply terminals.

Key Selling Points

SF6 Insulation for Compactness & Safety

SF6 gas provides exceptional arc-extinguishing and insulating performance, enabling a compact footprint while ensuring reliable interruption and isolation under high voltage.

Durable Material Selection

The cabinet frame uses galvanized or galvalume steel; the gas tank is stainless steel; busbars and contacts are T2 pure copper with tin or silver plating for low resistance and long service life.

Wide Applicability

Rated for 3.6-12kV, this RMU suits indoor distribution systems in substations, industrial plants, residential communities, airports, railways, tunnels, and high-rise buildings.

Flexible Configuration

Offers various combinations of load switches, fuse switches, and busbar sections to meet different network requirements.

Global Compliance

The company holds ISO9001, ISO14001, ISO45001 certifications, and products meet CE, SABER, and UL standards for international projects.

Technical Specifications

Parameter	Value
Rated Voltage	3.6 kV – 12 kV
Rated Frequency	50 Hz
Rated Current	630 A / 1250 A (dependent on configuration)
Insulation Medium	SF6 (sulfur hexafluoride)
Enclosure Type	Metal-enclosed, fixed-type
Frame Material	Galvanized / galvalume steel sheet
Gas Tank Material	Stainless steel plate
Busbar / Contact Material	T2 pure copper with tin or silver plating
Insulation Components	Epoxy resin & SMC composite, rubber sealing, stainless steel fasteners
Protection Class	Up to IP54 (as per application)
Standards	IEC, GB, CE, SABER, UL (product tested)

Note: Specific ratings may vary based on configuration; please consult factory for exact parameters.

Models and Options

The XGN15-12 RMU comes in various circuit configurations:

Standard ring main unit with load switch + fuse combination
Load switch + load switch (I-I), load switch + fuse (I-F), busbar section (I-B) configurations
Optional voltage and current transformers, control panels, and remote monitoring (4G/RS485)
Customized cabinet dimensions, protection grade, and component brands available

Materials and Structure

The XGN15-12 is engineered with high-quality materials to ensure durability and performance:

Frame: Galvanized or galvalume steel sheet for corrosion resistance and rigidity
Sealed gas tank: Stainless steel plate to maintain SF6 integrity
Conductive parts: T2 pure copper busbars and contacts, tin or silver plated for low resistance and high conductivity
Insulation: Epoxy resin and SMC composite insulators provide excellent dielectric strength
Sealing: Rubber parts and stainless steel fasteners ensure gas-tight and maintenance-free operation

Applications

This RMU is ideal for indoor power distribution systems in:

Small secondary substations and switching stations
Industrial and mining enterprises
Urban residential communities
Airports, railways, tunnels, and high-rise buildings
New energy projects (PV, wind, energy storage) as integration points

Customization

We support OEM/ODM modifications including:

Indoor/outdoor versions with appropriate protection typologies
High-altitude (＞2000m) options with increased insulation clearance and reinforced corona protection
Coastal and chemical resistance via hot-dip galvanized or fluorocarbon coating
Specific component brands (e.g., ABB, Schneider) for breakers and relays
Integrated intelligent monitoring for remote control and alarm

FAQ

What are the rated voltages and frequency for this RMU?

The XGN15-12 is rated for 3.6 kV to 12 kV and 50 Hz three-phase AC systems.

Can this RMU be used outdoors?

Standard version is for indoor installation. For outdoor use, please consult us for custom enclosure options.

Is the SF6 gas dangerous?

SF6 is generally safe under normal operating conditions. Our design uses sealed tanks and low gas pressure to minimize leakage and ensure safety.

What certifications does the product hold?

Our facilities are ISO9001, ISO14001, and ISO45001 certified. Product compliance with CE, SABER, UL is available upon request.

Can I get a customized configuration?

Yes, we offer flexible configurations and OEM/ODM services. Please provide your single-line diagram and requirements.

What are the payment and delivery terms?

MOQ is 1 unit. Payment 30% deposit by T/T, balance before shipment. Delivery FOB Shanghai. Third-party inspection (SGS) available.

Do you provide remote monitoring options?

Yes, we offer optional intelligent monitoring via 4G/RS485 for real-time data collection and remote control.

Inquiry Information

For inquiries, please contact us at:

Email: sale@tuoxinelectric.com

Phone/WhatsApp: +86 181-3691-5112

Or request a quote below:

Request a Quote

Image Filename and Alt Suggestions

Main image: xgn15-12-sf6-rmu-front.png

Alt: XGN15-12 SF6 ring main unit front view
Alt: 12kV RMU metal-enclosed switchgear cabinet
Alt: SF6 insulated ring main unit with galvanized steel frame