36kV urban and rural ring distribution networks, kiosk compact substations, industrial parks, renewable energy booster stations, commercial zone power supply and infrastructure distribution projects. It provides loop power supply, feeder sectionalizing an
ROCKWILL SM66 type 36kV / 40.5kV air insulated Ring Main Unit (RMU) is modular metal-enclosed medium voltage switchgear for 36kV distribution system with rated maximum voltage 40.5kV. It uses atmospheric air as insulating medium, fitted with high-performance load break switch and optional fuse combination unit for transformer protection. 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-2025-04135, Witness Test Report No. WT-2025-09069, 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, together with fault indicators and communication modules for distribution automation. Tropical anti-corrosion coating can be supplied to adapt to high humidity, heavy rainfall and coastal salt mist tropical environments.
low carbon switchgear, green switchgear ,environmentally friendly switchgear, SF6 free ring main unit, SF6-free medium voltage switchgear
24kV SF6 free RMU ,12kV SF6 free RMU ,36kV SF6 free RMU ,40.5kV SF6 free RMU
SF6 Alternative RMU ,zero GWP switchgear, zero GWP RMU, pure air insulated RMU,24kV SF6 free RMU
RMU tipe SM66 dirancang untuk sistem daya nominal 36kV dengan tegangan maksimum pengenal 40.5kV.
RMU ini menggunakan udara atmosfer sebagai media isolasi, bebas dari gas SF₆, sehingga menghindari kebocoran gas dan kekhawatiran terkait gas rumah kaca.
Mendukung kombinasi modular yang fleksibel termasuk bay masuk cincin, bay keluar cincin, dan bay proteksi transformator. Dapat dilengkapi dengan sakelar pemutus beban saja atau unit kombinasi sakelar pemutus beban dan sekering.
Mekanisme pengoperasian manual adalah standar, sedangkan aktuator bermotor merupakan opsi untuk kendali jarak jauh dan otomatisasi distribusi.
Indikator lintasan gangguan, sensor suhu, dan modul komunikasi bersifat opsional untuk penentuan lokasi gangguan, pemantauan status, dan integrasi SCADA.
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