SF₆ gas-insulated RMU: 24kV, up to 1250-1375A, lightning impulse 125kV, 4s short-time 20-25kA, making peak 50-63kA. Upper- and lower-isolation cabinet options available.
SF6 Gas insulated Ring Main Unit features compact 500‑mm‑width cabinet with SF₆ gas insulation. Innovative design for vacuum interrupter & disconnector solves high‑current temperature‑rise issue. Modular five‑anti interlock with lower‑door emergency unlock, lower‑door only opens with fully‑earthed main‑circuit, complying with IEC & GB RMU standards.
Ring Main Unit (RMU) with SF6 load switch, suitable for power distribution automation. Compact expandable metal-enclosed switchgear, simple structure, reliable interlocking, easy installation.
Discover fully sealed SF6 indoor ring main units for 11kV/24kV distribution substations – compact, reliable, and maintenance-free.
Medium voltage SF6 gas insulated ring main unit for 24kV, offering compact, reliable, and maintenance-free power distribution.
It adopts innovatively‑designed vacuum interrupter and isolating knife‑switch; simple primary‑circuit layout and uniform electric‑field distribution realize reliable temperature‑rise performance for 1375A rated current.
The gas‑box is filled with SF₆ insulating gas, its insulation performance meets IEC and GB standard requirements for medium‑voltage switchgear.
It adopts modular five‑anti mis‑operation interlock. Emergency unlock device is fitted on lower door. The lower door can only be opened when main‑circuit is fully earthed; the earthing switch can only be opened and breaker can only be closed after lower door is fully closed.
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