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24kV Environmentally Friendly Gas- Insulated Ring Main Unit(RMU)
Brochure · ROCKWILL

24kV Environmentally Friendly Gas- Insulated Ring Main Unit(RMU)

SM66-24/T630-20 eco-friendly gas-insulated RMU: 24kV, 630A, lightning impulse 125/145kV, 4s short-time 20kA, making peak 50kA. Available in circuit-breaker and load-switch versions.

Updated2026.09
LanguageEnglish
FilePDF · 1.8 MB
Environmentally Friendly Gas- Insulated Ring Main Unit(RMU)Brochure

Document description

SM66‑24 features compact 450‑mm‑width cabinet, visible double isolation breaks, modular five‑anti‑interlock & emergency unlock. IP67 gas‑tank with annual leakage ≤0.01%, dry‑air insulation and good mechanical endurance, complying with relevant IEC & GB RMU standards.

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Frequently asked questions

Insulation medium is dry air. Annual leakage rate of gas compartment ≤0.01% per year, stable insulation performance for long‑term operation.

Equipped with visible double isolation breaks; modular five‑anti mis‑operation interlock plus emergency unlock device on lower door. Lower door can only open with main‑circuit fully earthed

Upper‑isolation circuit‑breaker cabinet scheme and load‑switch cabinet scheme, both share identical outer dimensions.

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