Tripp lites smartint3000vs intelligent line interactive tower uninterruptible power supply ups prevents data loss downtime and equipment damage due to power outages voltage fluctuations and transient surges large internal batteries offer 14 minutes half load runtime and 4 minutes at full load runtime is expandable with optional external battery packs maintains regulated 230v nominal output without using battery power during brownouts and overvoltages from 151 to 282v 3000va power handl