In ups how can calculate the battery backup time
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Answer / sarath.s
Battery AH/Battery current at full load.
Ex:160/40 amp we get three hours back up
| Is This Answer Correct ? | 78 Yes | 35 No |
Answer / ishu
battery Ah*nominal dc voltage of system/load in va
| Is This Answer Correct ? | 35 Yes | 14 No |
Answer / malkhan s chauhan
Idc = Cap. of UPS*1000*PF
-------------------------
Nos. of Cells* ECV* Inverter Efficiency
| Is This Answer Correct ? | 24 Yes | 7 No |
Answer / manju
Battery capacity X No of battery X Ah X battery(0.8)/ o/p
wattage
this is will give backup time for your setup
| Is This Answer Correct ? | 26 Yes | 10 No |
Answer / bharat g surati
for back up count equation is
no of batteries X 12 volts X battery AH = totalVA
| Is This Answer Correct ? | 10 Yes | 7 No |
Answer / vinu chauhan
Battery Back Up = Idc*Hr
-------
% of battery utilization
| Is This Answer Correct ? | 7 Yes | 6 No |
Answer / v.bala
Battery current at full load / Battery Ah. This gives
approxmate backup time.
| Is This Answer Correct ? | 60 Yes | 60 No |
Answer / kumar
ups capacity = 5kva = 5000va
battery = 10 nos
battery volt = 12v
ups vdc = 10*12 = 120 vdc
ups power factor = 0.8
back-up time = 5000*0.8=4000
ups load = 4000/120
battery ah = 33.3 Ah perhour (appx value)
| Is This Answer Correct ? | 1 Yes | 2 No |
Answer / harish dhami
its all about d matter of charging and discharging.......
generally all of us r well known about how a capacitor
discharges.....what is d time constant for discharging.
knowing initial n final conditions we may calc. d backup
time with some formulas....
| Is This Answer Correct ? | 9 Yes | 14 No |
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