| Brand | ROCKWILL |
| Model NO. | 10.5kV 11kV 11.5kV 12kV Indoor Solid Insulated Ring Main Unit/RMU |
| Rated voltage | 12kV |
| Rated frequency | 50/60Hz |
| Series | RSS |
Pioneer in China's eco-friendly switchgear sector, we have specialized in R&D and manufacturing of SF₆-free switchgear for decades. With core technologies, we have established industry standards. Boasting a fully independent end-to-end production chain, we have built a product matrix of zero-emission and high-reliability eco-friendly switchgear, making us a trusted choice for power grid construction.
10.5kV 11kV 11.5kV 12kV Indoor Solid Insulated Ring Main Unit：Based on a large amount of research on domestic and foreign markets, our company has independently absorbed the advanced technology in the industry, and independently developed a new generation of intelligent switchgear ssolid insulated ring main unit for the power distribution industry. It does not contain SF6 gas, novel structure, high performance, no inner arc, compact design, safety, environmental protection, maintenance-free, etc.
The ring main unit can be widely used in the field of intelligent power distribution network and urban power distribution.
Feature
Split-phase modular design;
The outer surface of the electrode is coated with a semiconductor layer and grounded;
The pressure relief port on the insulation box (switch room);
All solid insulation and sealing design;
Unique internal structure design;
Complete application solutions, free combination;
Smart application;
High altitude applications
Parameter
The voltage classes of some of these eco-friendly switchgears include 6kV, 6.3kV, 6.6kV, 6.9kV, 7.2kV, 10kV, 10.5kV, 11kV, 11.5kV, 12kV, 13.2kV, 13.8kV, 14.5kV, 14.4kV, 15kV, 15.5kV, 15.6kV, 17.5kV, 20kV, 21.9kV, 22kV, 24kV, 30kV, 33kV, 33.5kV, 34.5kV, 35kV, 36kV, 38kV, 38.5kV, 40.5kV, 44kV, 45kV, 46kV, 66kV and 69kV. and customization is available.
Color |
silver or as request |
Size |
450*800*1450mm |
Material |
stainless steel, galvanized sheets |
Rated voltage |
12KV |
Rated current |
630A |
Rated frequency |
50HZ/60HZ |
Type |
solid insulated |
Application |
power distribution |
Standard |
IEC62271-200 |
Standard Operating Environment
Altitude: ≤2000 m (Special design adaptable to ≤2500 m)
Ambient Temperature: -15℃ to +40℃ (Short-term operation at ≤+50℃ for ≤4 hours within 24 hours is permissible)
Relative Humidity: Daily average ≤90%, monthly average ≤80% (Condensation-free and non-corrosive gas environment)
Solid insulated RMU uses epoxy resin to completely encapsulate all high-voltage live parts, including vacuum interrupters and conductive circuits. Unlike SF₆ gas-insulated switchgear (GIS), it contains no greenhouse gases and eliminates risks of gas leakage or liquefaction. Compared to air-insulated switchgear (AIS), it is more compact, fully sealed, and immune to dust, humidity, and pollution, offering superior safety and reliability in harsh environments.
Yes. The RMU does not use SF6 gas, which has a Global Warming Potential (GWP) 23,500 times that of CO2. By eliminating SF6, it fully complies with the EU F-gas Regulation and global environmental directives, while producing no toxic byproducts during operation or end-of-life disposal.
The solid insulation design eliminates issues related to gas pressure or liquefaction. Standard operating altitude is ≤2000m (adaptable to ≤2500m). Ambient temperature range is -15℃ to +40℃, with short-term tolerance up to +50℃ for up to 4 hours. There's no need to derate or adjust settings for altitude/temperature as required for SF6 GIS.
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