supply of on-line ups , supply and commissioning of 3 kva on-line ups with 120 minutes battery back-up 72v syst m, mosfet-pwm with in-built isolation technology, input power-single phase 160-260v ac 50 hz, output v oltage - single phase 230v ac ?1%, sine wave 50 hz, minimum vah-9600, protection-ip21, smf-vrla batt ery as per is:jisc:8702 (part i,ii,iii) with rack, over voltage/under voltage/overlaod and short circuit protec tion at ups output terminal, max thd - 3%, digital metering in ups for data, efficiency-90%, 20% overload l mit for 10 minutes, max overshoot and undershoot of output rated voltage-4, voltage regulation from no l oad to full load - 3%, minimum 1.2mm thick ms sheet enclosure with duly painted. with type test report , minimum warranty of machine 2 years. make: microtek/apc/luminus/nps/techser. [ warranty period: 30 months after the date of delivery ] ]