
Low Voltage Main Distribution Switchgear (400 V) for the Ore Preparation Plant of voestalpine
Overview
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.
Details
Switchgear type:
2 SPREPOWER LV-400V (EATON xENERGY) with 14 bays
Year of manufacture:
2011
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
Protection:
IP30
Standards and regulations:
EN 60 439-1