Overview
The eco-friendly gas-insulated ring main unit, HXGN(H)-12 series, is a medium voltage power distribution equipment designed for modern power systems. As a gas-insulated ring main unit it operates in 12 kV three-phase AC systems and provides a reliable and sustainable solution for power reception and distribution.
Unlike traditional units that rely on harmful gases, this product adopts non-toxic insulating media, aligning with global environmental protection trends and smart grid requirements. The insulating media used are nitrogen (N2) or dry air, which emit no toxic substances during operation.
Its compact structure and flexible configuration make it suitable for a range of distribution scenarios, balancing performance, safety and environmental impact. The sealed design and the environmentally friendly insulating medium also allow reliable operation in conditions where traditional equipment may struggle.
Key Features
- SF6-free insulating medium — the unit uses non-toxic insulating media, specifically nitrogen (N2) or dry air, which emit no toxic substances during operation.
- Direct replacement for SF6 load switch RMUs — it offers equivalent or superior performance without the environmental harm associated with SF6.
- Fully recyclable at end of life — all materials used in production are non-toxic and harmless, and the product is fully recyclable at the end of its service life.
- Compact structure for confined spaces — the ring main unit requires no special ventilation, making it suitable for basements, tunnels and ship cabins.
- Low emission design — the low emission design ensures safety in enclosed environments.
- Environmental resistance — resistance to high humidity, salt spray and temperature fluctuations suits high-traffic and exposed locations.
- Suitable for special environments — performs in high-altitude regions, strong wind and sand areas, and severe cold zones.
- Low noise operation — the compact size and low noise operation allow installation in basements or residential utility rooms.
Technical Specifications
| Model | HXGN(H)-12 series |
|---|---|
| Product type | Eco-friendly gas-insulated ring main unit |
| Rated voltage | 12 kV, three-phase AC |
| Insulating medium | Non-toxic media — nitrogen (N2) or dry air |
| SF6 content | None; direct replacement for SF6 load switch ring main units |
| Emissions | No toxic substances emitted during operation |
| Recyclability | Fully recyclable at end of service life |
| Ventilation | No special ventilation required |
| Suitable enclosures | Basements, tunnels, ship cabins and similar confined spaces |
| Environmental resistance | High humidity, salt spray and temperature fluctuations |
| Special environments | High altitude, strong wind and sand areas, severe cold zones |
| Noise | Low noise operation |
Applications
- Urban residential power distribution — safe and reliable distribution for communities, with compact size and low noise allowing installation in basements or residential utility rooms.
- Industrial and commercial premises — industrial and mining enterprises, shopping malls and office buildings, adapting to varying power demands for machinery, lighting and other critical systems.
- Transportation hub power supply — airports, subways, railways and tunnels, where resistance to high humidity, salt spray and temperature fluctuations is required.
- Special environment installations — high-altitude regions, strong wind and sand areas and severe cold zones.
Installation Conditions
- The unit has a compact structure and requires no special ventilation, so it can be installed in confined spaces such as basements, tunnels and ship cabins.
- The low noise operation makes it suitable for installation in basements or residential utility rooms without disrupting daily life.
- The sealed design and environmentally friendly insulating medium allow reliable operation in high humidity, salt spray and high wind and sand conditions.
- Because no SF6 is used, no gas handling or replenishment arrangement is required.
How to Select
- Rated voltage and rated current required by the network.
- Insulation type — this unit uses N2 or dry air rather than SF6.
- Number of ways and the switching configuration required.
- Indoor or outdoor installation and the required protection rating.
- Required protection and remote control functions.
- Site conditions — altitude, humidity, salt spray and temperature range.
FAQ
Is the eco-friendly gas-insulated RMU truly non-toxic?
Yes. All materials used in production are non-toxic and harmless. The insulating media, which are nitrogen (N2) or dry air, emit no toxic substances during operation, and the product is fully recyclable at the end of its service life.
Can it be installed in confined spaces?
Yes. The ring main unit has a compact structure and requires no special ventilation, making it suitable for confined spaces such as basements, tunnels and ship cabins. Its low emission design ensures safety in enclosed environments.
Does it replace SF6-based ring main units?
Yes. It is a direct replacement for SF6 load switch ring main units. It offers equivalent or superior performance without the environmental harm associated with SF6, aligning with global efforts to reduce greenhouse gas emissions.
What insulating medium does it use instead of SF6?
The unit uses non-toxic insulating media, specifically nitrogen (N2) or dry air, in place of SF6.
Which environments is it suitable for?
It performs well in special environments such as high-altitude regions, strong wind and sand areas and severe cold zones. Its resistance to high humidity, salt spray and temperature fluctuations also makes it suitable for transportation hubs such as airports, subways, railways and tunnels.
Is the low noise level suitable for residential installation?
Yes. The compact size and low noise operation make the unit suitable for installation in basements or residential utility rooms without disrupting daily life.
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