The SY-RT Series 1-3KVA Rack & Tower Online UPS is a versatile rack mounted online ups for taxation, healthcare, energy and electricity sectors. It features true double-conversion, output PF 1, <1% output voltage regulation, 3:1 output crest ratio, and 50Hz/60Hz frequency conversion, ensuring stable, high-quality power supply. This rack mounted online ups offers ECO energy saving, hot-swappable batteries, EPO function, and MOV-based surge protection. With low input THDi, adjustable charging current via LCD, and programmable outlets, it reliably safeguards critical equipment while optimizing energy efficiency. Capacity Range 1-3 KVA Input Voltage 100/110/115/120/127VAC / 200/208/220/230/240VAC Output Voltage 100/110/115/120/127VAC / 200/208/220/230/240VAC (regulation <1%) PF Input PF 0.99 (normal voltage, 100% load); Output PF 1 Input Wiring Single phase with ground Efficiency 85%@normal input voltage (output); Up to 99%@fully charged battery (specific models)