10kV Compact Eco Gas Insulated Ring Main Unit (RMU)
This 10kV modular RMU is an indoor primary distribution solution that uses high‑purity nitrogen or dry air as the insulating medium—completely eliminating SF₆ greenhouse gas. It meets global low‑carbon grid standards and is ideal for environmentally conscious power networks.
The unit supports flexible configuration: 1GP incoming feeder + 2GP outgoing feeder modules can be freely combined. Typical applications include:
Urban distribution networks
Commercial and industrial parks
Real estate power rooms
Photovoltaic and wind power booster stations
It performs circuit switching, short‑circuit protection, energy metering, and ring‑network power supply in 10kV three‑phase AC systems.
| Compartment | Function & Features |
|---|---|
| Upper – Measurement & Control | Houses a multi‑function protection relay, three‑phase volt‑ammeters, colour‑coded operation buttons (close/open/earthing), and a remote electric operating mechanism. Supports three‑remote smart networking (remote signalling, remote measuring, remote control) for seamless smart‑grid integration. |
| Middle – Hermetic Gas Tank | Laser‑welded stainless‑steel sealed tank containing an integrated 3‑position load switch (close/isolate/earth) and high‑precision CT & VT. A single‑line diagram is printed on the front panel for intuitive operation, with a mandatory mechanical interlock to prevent misoperation. |
| Lower – Cable Chamber | Front‑access cable maintenance channel with large heat‑dissipation grilles, high‑voltage warning signs, and a quick‑open inspection door. No rear access required—significantly reduces the floor area of the distribution room. |
Gas tank IP68 (dust‑tight and waterproof)
All primary components are maintenance‑free for the entire service life
Resists damp, coastal salt fog, and heavy dust
Every unit passes full type tests (air tightness, internal arc, temperature rise) before delivery
Globally Compliant Eco‑Design
SF₆‑free with dry air/nitrogen insulation → zero greenhouse effect. Meets environmental standards in the EU, Southeast Asia, and other regions—avoiding cross‑border carbon tariff restrictions.Ultra‑Compact Footprint
Narrow single‑unit width allows seamless multi‑module assembly. Saves 35% floor space compared to traditional XGN15 semi‑insulated RMUs, reducing civil construction costs.Lifetime Maintenance‑Free Sealed Tank
The hermetic tank isolates moisture, dust, and condensation. All switching and measuring components inside require no gas refilling or routine inspection over the entire operational life—minimising O&M expenses.Full Smart‑Grid Compatibility
Standard integrated relay provides fast tripping for overload, short‑circuit, and earth faults. Reserved communication interfaces support DTU, remote monitoring, and fault‑location data upload—perfect for smart‑city and renewable‑energy distribution.Multi‑Layer Mechanical Safety Interlock
Triple interlocking among load switch, earthing switch, and cabinet door. The cable compartment door can only be opened when the earthing switch is closed—physically eliminating dangerous operations such as live‑door opening or closing a switch with an earth connection.
Urban ring‑distribution networks, residential & commercial substations
Photovoltaic, energy‑storage, and wind‑power auxiliary distribution
Industrial parks, mines, underground facilities, and coastal high‑humidity sites
Smart‑city, railway, and municipal engineering power supply systems
| Parameter | Specification |
|---|---|
| Rated Voltage | 10 kV |
| Rated Frequency | 50 Hz |
| Insulation Medium | Dry air / Nitrogen (SF₆ optional) |
| Gas Tank Protection Class | IP68 |
| Operation Type | Manual / Remote electric |
| Standard Compliance | IEC 62271, GB 3906 |
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