Product Overview
Compact Ring Main Unit from a Professional Factory in China
XGN15-12 inflatable ring network switchboard marks a new step in development of metal-enclosed switchgear equipment, using SF6 load switch with air insulation in the entire cabinet. Equipped with the closing-opening-grounding three-position arc-extinguishing chamber and comprehensive five-prevention interlocking, it is compact, expandable and low-maintenance, and can be applied in distribution automation business.
Applications & circuit protection
XGN15-12 model RMU provides switching and protection solutions in urban distribution networks and automated distribution.
- Distribution automation – remote or local switching.
- Urban networks – compact RMU for urban networks.
- Industrial – High voltage distribution in the plant.
- Box Substation – integrated distribution.
Construction & operating reliability
The chamber has a three-position arc-extinguishing system and operates through three mechanisms, each designed for safety, ease of use, and performance.
- The system consists of three positions – SF6 load switch, close-open-ground position.
- The interlocking system is fully functional and operates perfectly.
- The chamber is compact, small, and needs very little maintaining.
- The insulation strength of the open gap is remarkable.
- The configuration is flexible enough to allow future growth of the system.
Technical Parameter
| Parameter | Value |
| Rated voltage | AC 12 kV |
| Rated frequency | 50 Hz |
| Load switch | SF6, three-position |
| Insulation | Air-insulated, metal enclosed |
| Interlocking | Five-prevention functions |
| Application | Distribution automation, ring networks |
| Standard | IEC 62271 / GB 3906 |
Switchgear Price & Factory Quotation
The price of switchgear is determined by the arrangement of the switchgear panel, busbar rating, kind of switchgear, type of protection relay, and its quantity. Being a manufacturer, we offer prices of our Ring Main Unit directly from our factory price list with discounted prices for distributors and project orders.
- Provide standard panels based on our recent factory price list.
- Custom busbar, relay and layout prices will be quoted per project.
- Terms are available as FOB/CIF.
Switchgear Wiring & Cable Connection
The Ring Main Unit panel is delivered with busbars, cable terminals, and wiring diagrams. Incoming and outgoing cables connect to appropriately marked terminals, and the secondary wiring for protection and indication is ready for delivery after loomed and tested.
- All cable entries manufactured to approved design
- Secondary wiring approved against schematic
- Subjected equipment should have earth bus and connection points
Compare Switchgear Configurations
Select the configuration that fits your project:
| Feature | This Panel | Alternative |
| Voltage | As specified | Other MV/LV classes available |
| Current | Per model | Higher or lower rated current |
| Mounting | Fixed / withdrawable per model | Ring main or feeder arrangement |
| Protection | Per project relay scheme | Custom protection functions |
| Best for | Distribution and control | Substation or industrial feeders |
Export Markets & Country Compatibility
The Ring Main Unit is provided for use in industrial and distribution projects in Southeast Asia, Africa, the Middle East, Latin America and South Asia. The method of installation takes into consideration the voltage, frequency and standard specifications of the country of destination.
Panel Dimensions, Weight & Packing
The size and weight of a panel are dependent not only on configuration but also on the current rating. The customary sizes for an LV cabinet are 600-1000 mm in width, 600-1000 mm depth and 1800-2200 mm high. In the case of MV cabinets, the scaling is done based on the switchgear scheme. The sizes and weights are established together with final drawings, and upon transportation the panel needs to be packed vertically.
- Final drawing of an approval consists of size and weight
- The panel needs to be packed vertically.
- The pack and method of lifting is confirmed when ordering.
Standards & certifications
The equipment is built according to IEC 62271 and GB 3906 standards, allowing type-test documentation to be provided for power grid approval.
- Standards: IEC 62271 and GB 3906.
- Details of locking functions are confirmed.
- Type-test documentation is ready.
- Files for an approval project are available.
OEM & B2B supply support
Subian Electric, a reputable power equipment manufacturing company, understands the needs of the distribution automation market and delivers reliable products to businesses, contractors, and suppliers in the field of RMU assistance and supply.
Please share all your requirements concerning configuration or automation.
- Sketches and samples are provided.
- Flexible lot for project purchase
- Complete OEM/ODM service
- Customization for packaging and marking
- Provision of technical specifications and certification
Frequently Asked Questions
What is an inflatable ring network switchgear?
This RMU is a SF6 switch as well as an air-insulated switch needed for automated switching.
What is the three-position switch?
A three-position switch makes it possible to carry out a switching process in a compact switch with earthing.
What safety features does it have?
Due to the usage of a complete interlocking mechanism, it helps avoid errors like earthing under voltage or unintentional switching occurring.
Is it low maintenance?
Definitely! The unit is compact and requires little maintenance; making it a perfect fit for automated systems.
