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Low · Medium · High Voltage Power Systems

Imperium Global Solutions
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MV Switchgear

SF6 Gas-Insulated Ring Main Unit (GIS RMU)

Our SF6 gas-insulated Ring Main Units (RMUs) are compact, reliable, and maintenance-free solutions designed for medium voltage distribution networks. Fully…

12 – 40.5 kVIEC 62271-200
SF6 gas-insulated ring main unit (RMU) for medium voltage distribution

Overview

Our SF6 gas-insulated Ring Main Units (RMUs) are compact, reliable, and maintenance-free solutions designed for medium voltage distribution networks. Fully compliant with IEC 62271-200 and IEC 62271-105, they provide safe and efficient operation in 12, 24, and 36 kV systems.

Technical specifications

Rated Voltage12 / 24 / 36 kV
Rated Current630 A (circuit breaker), 125 A (fused switch)
Short-Circuit Withstand20-25 kA / 1s
Insulation MediumFully SF6 gas insulated
Protection ClassIP67 (gas tank), IP4X (general enclosure)
Service ContinuityLSC2A
Internal Arc ClassificationIAC A-FLR, up to 20 kA / 1s

Advantages

  • Compact footprint and space-saving design
  • Maintenance-free due to sealed SF6 insulation
  • Fast installation and long service life
  • Wide range of modular options: breaker, load break switch, fused switch, etc.
  • Integrated mechanical interlocks for operator safety

Applications

  • Urban and rural distribution networks
  • Industrial facilities
  • LV/MV transformer substations
  • Renewable energy integration points

Have a project or technical specification?

Share your requirements — voltage level, ratings, standards and quantities — and our team will propose the most suitable solution.