Question { JLL, 2696 }
How to calcualte the total number of cells required for
particular UPS of some X KVA with 3 and 5 hours back-up?
Answer
24v×100ah= 2400 watt hr
Backup time = 2400/total load
= 2400watthr/1kva
= 2400/1000×.8
= 2400 watthr/800 watt
= 3 hr