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SM6 Series - SF6 Ring Main Units for Urban Distribution
The SM6 series SF6 ring main units feature sealed SF6 gas insulation tanks for maintenance-free operation in urban power distribution networks. Modular design with load break switch and fuse or vacuum circuit breaker protection options.
Model Number Breakdown
Applications
Urban ring main distribution networks
Commercial building power supply
Industrial park distribution
Underground cable network nodes
Key Features
- Sealed SF6 gas tank for maintenance-free operation
- Compact modular design for space-constrained installations
- Load break switch with fuse or VCB protection modules
- Suitable for 12kV and 24kV distribution networks
Specifications Range
All specifications and dimensions can be customized upon request
Model Selector
| Key parameters | Model Range |
|---|---|
| Rated Voltage | 12, 24 |
| Rated Current | 630 A |
| Max. Fuse Rating | 63–100 A |
| Short-time Withstand Current | 20 kA |
| Protection Level | IP54 |
| Standard | GB3906, IEC 62271-200 |
Product Drawing
Ring Main Unit - SM6-12
Note: This is a general product illustration. For detailed technical drawings and specifications, please contact our engineering team.
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Certification
The values below are computed from what you selected above. Anything that cannot be computed yet is shown as an em dash — never as zero.
Iₙ = S / (√3·U) · I_sc = 100·Iₙ / uₖ · S_sc = √3·U·I_sc · I_p = k·Iₖ
Still required to complete the calculation: rated capacity S, impedance voltage uₖ, short-time or peak withstand current.
Per-model values (P0 / Pk / uₖ declared by the factory, losses, noise, temperature rise, dimensions, weight) are not in the product library: those rows stay at an em dash until the factory parameter sheet is supplied. An em dash means the value is unavailable — it is never rendered as zero.
Reference prices are for estimation only and do not constitute a formal offer.
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