The Delta RT-3K is a 3KVA (2700W) online double-conversion UPS built for medium-sized offices and IT-heavy environments that can't tolerate downtime. It provides true online double-conversion protection with pure sine wave output and zero transfer time, guarding against outages, surges, spikes, and general power fluctuations. Internal batteries (72VDC) keep the footprint compact while still delivering solid runtime for its class. This unit is well suited to offices running multiple workstations plus networking and communications equipment. Suitable equipment includes 3-5 desktop PCs, a small server, a networking rack, a CCTV control room, and a VoIP phone system. On light load, expect up to 1 hour of backup on 7Ah batteries or 1+ hour on 9Ah batteries. Additional features include LCD display with intelligent monitoring, overload and short circuit protection, and high efficiency operation. Price excludes VAT.