SM6-24 Indoor SF6 Insulated Medium Voltage Ring Main Unit
Key attributes
| Brand | ROCKWILL |
| Model NO. | SM6-24 Indoor SF6 Insulated Medium Voltage Ring Main Unit |
| Rated voltage | 24kV |
| Rated frequency | 50Hz |
| Series | SM6-24 |
Product descriptions from the supplier
Description
Product Description
Manufactured by Rockwill, the standard SM6-24 Ring Main Unit (RMU) is an intelligent primary distribution unit engineered for medium voltage networks. Featuring modular configurability, it supports multi-functional arrangements—including ring-type load break switch units and load transfer units—while integrating intelligent monitoring and relay protection systems to significantly enhance operational safety and system reliability.
Product Introduction
Rockwill’s SM6-24 RMU has been successfully exported to numerous countries and regions worldwide, earning consistent acclaim from global clients. Backed by mature manufacturing capabilities and a dedicated professional production line, Rockwill implements stringent end-to-end quality control to guarantee the reliability of every unit.
Designed with modularity at its core, the SM6-24 RMU flexibly adapts to multiple configurations:
- Load Break Switch-Fuse Combination Units
- SF6 Ring Circuit Breaker Units
- Vacuum Ring Circuit Breaker Units
- Contactor Units
All busbars across cabinet variants are horizontally aligned on a single plane, simplifying internal connections and future expansion. The unit is housed within a hermetically sealed enclosure filled with SF6 gas, ensuring superior insulation and arc-quenching performance. Switchgear types, operating mechanisms, and low-voltage functional modules are fully customizable to meet specific project requirements.
SM6-24 Key Advantages
- Modular & Adaptable Design：Lightweight structure with adjustable cabinet width; versatile configurations accommodate diverse installation environments and site constraints.
- Intelligent Monitoring & Maintenance：Enables remote monitoring, automation, and predictive diagnostics—substantially reducing operational labor and lifecycle maintenance costs.
- Robust Environmental Resilience：High IP-rated enclosure ensures stable, reliable performance in both indoor and outdoor conditions across varying climates.
- Advanced Arc-Quenching Safety：Optimized arc interruption technology enhances operational safety and effectively mitigates fire and electrical hazards.
- Space-Efficient Layout：Compact footprint and rationalized internal layout maximize spatial utilization—ideal for space-constrained substations or urban installations.
Product Parameters
| Rated voltage (kV) | 7.2 | 12 | 17.5 | 24 | |
| Power Frequency | 50Hz | ||||
| Short-time withstand current (kA. 1s) | 25 | 630 – 250A | |||
| 20 | 630 – 250A | ||||
| 16 | 630 – 250A | ||||
| 12.5 | 400 – 630 – 250A | ||||
| Transformer offload (A) | 16 | ||||
| Cables offload (A) | 31.5 | ||||
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