Double-Conversion UPS Protects Equipment against Damage, Downtime and Data Loss. This 200/208/220/230/240V 50/60 Hz UPS system maintains perfect output by converting AC input to DC, then reconverting UPS output to fully regulated sine wave AC with +/-2% voltage regulation in online and battery modes. Featuring a 2700W capacity, high 0.9 power factor, 570 joules of surge suppression, true on-line operation with pure sine wave output and zero transfer time in on-line double-conversion mode, the SmartOnline® SU3000LCD2UHV double-conversion UPS provides the highest level of AC power protection and battery backup for critical network closet, computer room and data center equipment.