HV Switchgear
KBS-12/630-25 Outdoor Ring Main Cabinet (RMU Box)
Outdoor ring main cabinet housing SF6 RMU units for 12kV/24kV cable networks.
KBS-12 is an outdoor ring main cabinet (cable branching box / RMU box) housing XGN□-12 series SF6 fully-sealed RMU units. It supports 12kV and 24kV networks and can be extended with distribution automation, suitable for urban cable networks and outdoor ring main applications.
Key Technical Parameters
| Rated voltage | 12 kV (24 kV option) |
|---|---|
| Rated current | 630 A |
| Rated breaking current | 25 kA |
| Internal unit | XGN□-12 SF6 fully-sealed RMU |
| Enclosure | weather-proof outdoor cabinet |
| Ambient temperature | -40 °C to +50 °C |
| Wind speed | up to 35 m/s |
| Pollution class | III |
| Seismic | degree 8 |
| Standards | IEC 62271-200, GB/T 3906-2020 |
Structure & Features
- Houses SF6 RMU modules; extensible with distribution-automation units.
- Tilt tolerance ≤ 3°; adjust SF6 pressure for sites above 1000 m altitude.
Application Scenarios
- Outdoor cable ring networks, urban distribution and renewable collection points.
Model Designation & Variants
- KBS = cable branching box; 12 = rated voltage; H = ring-main type; □ = switch type and quantity.