pbpoovannagamer Posted August 21, 2014 Report Share Posted August 21, 2014 Looking to buy a ups for my home looking for backup that lasts at least 4 hours to 6 hours Requirements Backup for 3 ceiling fans at full speed- need these to run for 6 hours in summer time when power cuts occur at night, assuming i keep PC, TVs, Lights all OFF! else the UPS has to give back up for atleast 3 hours with the below appliances running: 1 PC (700 W), 2 Ordinary TVs, 5 Bulbs(CFL- 25 W) and 3 Ceiling fans called APC they said i should opt for 2 kVA UPS which costs 28k which i feel is just too expensive!! Suggestions please! Purchased an UPS - please read post no 3 down below by puns for info Thanks for help Link to comment Share on other sites More sharing options...
pbpoovannagamer Posted August 22, 2014 Author Report Share Posted August 22, 2014 no one here has any experience using/purchaseing a home UPS ??? Link to comment Share on other sites More sharing options...
puns Posted August 22, 2014 Report Share Posted August 22, 2014 You need to do some maths as to your requirements. Eg: Time(in Hrs) = Battery Voltage (In volts) * Battery Capacity (in Ah)*efficiency of inverter Load (in VA) Battery voltage = 12 Volts Battery Capacity = 150 Ah Load = Two fluorescent lamps (40 Watts each) and one ceiling fan (75 Watts )= 155 Watts Inverter efficiency = 80%= 0.8 Backup Time = 12 * 150*0.8/155= 9.29 Hrs (Approx) Come up with the numbers, go to couple of local ups & battery sellers and you will get the quotes. Link to comment Share on other sites More sharing options...
pbpoovannagamer Posted August 24, 2014 Author Report Share Posted August 24, 2014 thank you that is very helpful Link to comment Share on other sites More sharing options...
PS Fan Posted September 6, 2014 Report Share Posted September 6, 2014 APC ftw Link to comment Share on other sites More sharing options...
pbpoovannagamer Posted September 15, 2014 Author Report Share Posted September 15, 2014 nah i purchased a Luminous UPS 1.5 kva for 6500 Rs and added two 100 Ah Tubular Exide Batteries for 7500 each! now Powercuts are not annoying anymore !! with only PC on full load i should get about more 3 hours back up. WIth just lights and Tv i will get close to 7 to 8 hours!! Link to comment Share on other sites More sharing options...
Danny007 Posted September 29, 2014 Report Share Posted September 29, 2014 Nevermind just saw the calculation above Link to comment Share on other sites More sharing options...
PS Fan Posted October 20, 2014 Report Share Posted October 20, 2014 nah i purchased a Luminous UPS 1.5 kva for 6500 Rs and added two 100 Ah Tubular Exide Batteries for 7500 each! now Powercuts are not annoying anymore !! with only PC on full load i should get about more 3 hours back up. WIth just lights and Tv i will get close to 7 to 8 hours!! Nice Link to comment Share on other sites More sharing options...
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