APC SRV3KI Double-Conversion Pure Sine Wave Tower 3kVA Online 2400W LCD UPS that is easy to read: Results Maximum Adjustable Power in Watts 3.0kVA / 2.4kWwatts Effectiveness at Maximum Load 88.0 % Output Frequency (mains synchronization) 50/60 Hz +/- 3 Hz 240, 220, and other output voltages; load crest factor 3: 1. The topology Online Double Conversion Type of waveform A sine wave Typical Transfer Time: 4 ms Automated Bypass Internal Bypass