Uninterrupted Power Supply System ensures input of ac single phase, 230 V/ 440V three phase, 50 HZ ±5% and output of 230 v, ac single phase ± 1%. The System has frequency of 50 Hz and DC voltage of 12/ 24/ 36/ 48/ 60/ 72/ 96/ 120/ 240V and sine wave. The System has power rating range from 250 VA to 50 KVA. The System has voice power alert software and has indicates battery low with audio alarm. The Uninterrupted Power Supply System has optional auto or static by pass and less than 5% at linear load.