/EVI 10000VA / 9000W Tower Online Single Phase UPS - N+X parallel redundancy, Online double conversion with DSP control, Input current harmonic: <3%, High output power factor: 0.9 PF, Wide input voltage range: 120 - 276 Vac, Wide input frequency range (50 Hz: 45 - 55 Hz / 60 Hz: 54 - 66 Hz), Supports