Low Voltage Main Distribution Switchgear (400 V) for the Ore Preparation Plant of voestalpine

SPREPOWER LV-400V low voltage switchgear


For its ore preparation plant, voestalpine commissioned Sprecher Automation to deliver the low voltage main distribution system, consisting of two 400 V SPREPOWER LV switchgears.

In accordance with fire-proof arrangements, the new LV system is sectionalised.

The switchgear is fed by 2 MVA transformer per busbar section, whereas the transformers are fed by 2 separated grids at superior level.

In the event of a busbar section failure, an automatic switching system, which is installed at the busbar sectionalizer, re-connects the affected busbar within 2-3 seconds.

Outgoing feeder with fuse blocks up to 630 A


Switchgear type:
2 SPREPOWER LV-400V (EATON xENERGY) with 14 bays

Year of manufacture:

Operation voltage (Ue):
400 V / 50 Hz

Rated voltage of auxiliary circuits:
220/24 VDC

Rated current (In):
3,200 A

Rated short-time withstand current (Icw):
55 kA


Standards and regulations:
EN 60 439-1