This manual describes the Siemens 8BK30 medium‑voltage switchgear with draw‑out vacuum contactors. It covers the product’s application areas, safety features, interlock requirements, and detailed technical specifications such as rated voltages, currents, and mechanical life.
Installation instructions include floor cutouts, fixing methods, and options for mounting the switchgear on solid floors or foundations. Operational guidance explains draw‑out section positions, interlocking conditions, and testing procedures for the vacuum contactors.
| Rated voltage | 3.6 – 12 kV |
|---|---|
| Rated short‑time current (busbar) | 50 kA |
| Rated feeder current | 400 A |
| Rated busbar current | 4000 A |
| Motor breaking power | 1600 kW – 6500 kW |
The low‑voltage plug must be inserted, the high‑voltage compartment door closed, the vacuum contactor open, and the make‑proof earthing switch open.
It can withstand short‑time currents up to 50 kA.