Ring Main Units (RMU)
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Medium Voltage Switchgear / Ring Main Units (RMU)

Ring Main Units (RMU)

12 kV ring main units for indoor ring-main and terminal distribution, offered in three SF6-free / sealed insulation routes — eco-gas SF6-free (HLXGN), SF₆ fully-sealed C-GIS (HLC) and solid-insulated SF6-free (SLG). Three-position main switch, modular functional units, and optional smart integrated (一二次融合) versions with built-in DTU.

Detailed technical data and datasheets are available on request. Contact our sales team for the full specification sheet tailored to your project requirements.
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Product Features

  • Three insulation routes: eco-gas SF6-free (HLXGN), SF₆ C-GIS (HLC), solid-insulated SF6-free (SLG)
  • Three-position main switch (closed – open – earthed) with spring mechanism (manual / motor)
  • Modular functional units (C / F / V / PT / D) freely combinable; five-prevention interlocks
  • Eco-gas and solid variants give zero greenhouse-gas emission and 30-year design life
  • Smart integrated (一二次融合) versions with factory-built DTU available — IEC 61850 / 104 / DNP3
  • Compliant with IEC 62271-200 and GB 3906
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