Open Access

Table 2

Technical specifications of MV UPS.

Item Specification
Nominal voltage 4.16 kV ± 10%
Rating 10 MW
Efficiency (full load) 99.5%
Autonomy Up to 15 min
Displacement power FACTOR 0.7 lagging to 0.9 leading
Typical transfer time ≤1.8 ms (typical)
UPS footprint 54 m2 (without storage)
System DC nominal voltage 750 V DC (812 ∼ 554 V DC)
The MV UPS may be equipped with one of three storage devices
Energy storage Volt/Cell AH Autonomy Footprint

Super capacitor 1 s 10 m2
Lead-acid 12 V 50 30 s 25.6 m2
Lithium-ion 3.7 V 60 15 min 42 m2

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