Outdoor urban and rural medium voltage ring distribution networks, roadside compact distribution kiosks, residential area power supply, industrial park branch feeders, renewable energy distribution interconnection projects. It performs loop power supply,
ROCKWILL OMR Type Outdoor Gas Insulated Ring Main Unit is compact metal-enclosed modular switchgear designed for outdoor medium voltage distribution networks. Its primary live components are sealed within a stainless steel tank filled with insulating gas, delivering high integration and stable performance regardless of dust, moisture and temperature fluctuation. The product complies with IEC 62271-1:2017, IEC 62271-103:2019 and IEC 62271-200:2021. Relevant documents include Type Test Certificate No. TT-2025-04148, Witness Test Report No. WT-2025-09081, Routine Factory Test Report No. FT-2025 series, Raw Material Mill Certificates, all issued by CNAS accredited independent high voltage test laboratory and available for tender submission, utility review and project site acceptance. Manual or motorized operating mechanisms are optional, paired with fault passage indicators and communication modules to support distribution automation. The tank and enclosure adopt anti-corrosion treatment, well suited for outdoor tropical, coastal and heavily polluted environments.
Professional manufacturer of high-voltage switchgear and control equipment. We provide reliable quality, in-house testing, global sales and dedicated after-sales support for customers.
RMR 24kV RMU: SF6-insulated, stainless steel-tanked (≤0.1% annual leakage, 30y life), non-extensible/extensible/modular, safe, ideal for power distribution.
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The OMR gas insulated RMU has all high-voltage live parts hermetically sealed inside a stainless steel gas tank. It is fully factory assembled and tested, with compact footprint and immune to outdoor dust and humidity.
This outdoor GIS RMU can be supplied for 11kV, 22kV and 33kV medium voltage systems, with flexible bay combinations of ring-in, ring-out and transformer protection modules.
Manual spring mechanism is standard for local operation. Motorized actuator can be selected to support remote opening/closing, matching fault indicator and SCADA system for automatic fault management.
The sealed tank structure isolates internal high voltage components from external pollution. Anti-corrosion enclosure is standard, suitable for coastal salt mist, high humidity and dusty outdoor sites.
Fault passage indicators, gas density monitors and communication modules are optional. They enable fault location, gas status tracking and remote data upload to distribution automation system.
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