Product Overview
Metal-Enclosed Ring Main Unit from a Trusted Power Equipment Factory
HXGN15-12 tabular type metal-covered ring network switchgear refers to a novel kind of device for high voltage specifications, designed for reconstruction and building purposes within urban electricity grids. Its main function is breaking down the load and causing short-circuit currents, playing the role of ring supply apparatus for 12 kV and 50 Hz voltage networks as well as the end-user devices installed in box-type substations.
Applications & circuit protection
HXGN15-12 ring main units enable switching and protection in urban distribution grids and supply points.
- Urban distribution grids: Ring distribution and protection.
- Industrial and mining: Distribution feeders.
- High-rise buildings: Compact distribution of MV.
- Box substations: MV on-board distribution.
Construction & operating reliability
The spring mechanism can be utilized in either manual or powered form, and there are potential isolation and VS1 fixed circuit breaker applications.
- It interrupts load current and short circuit current.
- With compressed air or vacuum load switch options available.
- This has a spring mechanism and can be operated either by hand or electrically.
- There are isolation switch and VS1 circuit breaker options available.
- Provides a compact metal enclosure type for fixed type.
Technical Parameter
| Parameter | Value |
| Rated voltage | AC 12 kV |
| Rated frequency | 50 Hz |
| Application | Ring network supply, distribution and protection |
| Load switch | Compressed-air / vacuum type |
| Operating mechanism | Spring, manual or electric |
| Mounting | Indoor, box substation compatible |
| Standard | IEC 62271 / GB 3906 |
Panel Cost Factors & Getting a Quote
The price of a Ring Main Unit controller is determined by its current rating, breaking capacity, type of remaining circuitry, housing and equipment. We give the offer based on a customer’s single-line model and the volume price for container orders.
- Quote for submission based on SLD and panel layout
- Prices reflecting the volume of purchases for the distributor
- Price for delivery and certificate per order
Panel Connection Guide
Connect the power cables at the terminal busbars marked and fix control cable according to the given schematic. Mechanical interlocks need to be verified before the system is powered.
- Power and control terminals are properly marked
- Interlock verification must be done before being powered up
- Connection diagram is provided along with the panel
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 delivered to distribution and industrial projects in Southeast Asia, the Middle East, Africa, Latin America and South Asia. The configuration of the panels meets country standards in terms of voltage, frequency and protection, with the certification confirmed per region.
Panel Dimensions, Weight & Packing
The size and weight of panel depend on both its arrangement and current rating. Standard LV panels have a width of 600-1000 mm, a depth of 600-1000 mm and a height of 1800-2200 mm. Dimensions and weight are verified through the approval drawing before transportation in an upright position.
- Demention and weight confirmed according to approval drawings
- Panels are prepared for transportation with busbar protection
- Lifting and transport arrangements are specified in the order
Standards & certifications
Manufactured according to IEC 62271 and GB 3906, the device may be supplied together with type-test documentation for grid project acceptance.
- Design standard: IEC 62271 / GB 3906.
- Load breaking and short circuit making confirmed.
- Type-test reports available.
- Documentation for approval of project.
OEM & B2B supply support
Subian Electric serves as a specialist in producing power products and supplying pwer brackets for urban processes, construction organizations and suppliers of power materials.
If you need a certain configuration or a particular type of switch, let us know about the specifications of your network and amount of RMUs.
- Samples and design drafts available upon request.
- Purchasing in a flexible volume is possible.
- OEM/ODM is supported.
- Marking and packing are done by us.
- Technical documentation and certification will also be provided at your request.
Frequently Asked Questions
What is a ring main unit?
An RMU (ring main unit) is mainly utilized for switching and protection of MV feeders in ring-type distribution networks using various kind of load switches and breakers and fuses.
What voltage is this unit rated for?
The voltage rating of HXGN15-12 is 12kV AC 50Hz.
What switching options are available?
Two options are available in this regard i.e. compressed air load switch or vacuum load switch, with other options of isolation switch and circuit breaker VS1.
Can it be installed in box substations?
Yes, it can be used in the box substations as it is suitable for indoor installation.
