Answer / aza

WHAT 130 STANDS FOR IN ANSWER NUMBER 2??

Answer / bhushan

UPS / Invertor Battery Backup Time =
----------------------------------


Batt Voltage X No.of (Batteries) X Single Battery Ah /
Total Load (Watts) = No.Hours Backup


Example :- 12v X 20(Batteries) X 200Ah (Single Battery)
/ 6000 Watts = No.Hours Backup


48000 / 6000 Watts = 8 Hours Backup
BHUSHAN

Answer / cree led street light in pakis

thanks for the useful information you people share

Answer / ms

su-kam inverter company saying in a restive load backup time will be battery ah*battery v*80%/total load.(20% is battery

Answer / mana

UPS Bachup time=(Battery AH*No.ofbattery/UPS capacity in
kva*130)*60=mins

Answer / chesda

T = (N.Q.eff.PF.V)/Load

T : Backup time [h]
N : Number of batteries [Nos]
Q : Batteries charge [AH]
eff : Inverter efficiency [%]
PF : Load power factor
V : Batteries voltage [V]
Load : Connected load [W]

Answer / tapas

UPS Battery Backup time= (No. of battery X Volt per battery X Battery AH)/ Load in VA

(No. of battery X Volt per battery X Battery AH)
Backup = ------------------------------------------------
time Load in VA

Note: KW should be converted to VA before applying the formula

Answer / basanta das

Ups Standard Bacup Time = (Battery Volt X Each Battery Ah X No. Of Batteries) / load in VA
For example: Volt 12 x AH 26 x Total batteries 16 = 4992
Now divide the above with required load (1 KVA) =1000VA
So result is 4992/1000 = 4.992 hours
Means your UPS will run for 4.992 hours in standard calculation method, but in actual there will be a UPS energy waste or dissipation, let your UPS efficiency is 80% then you will get actual time
4.992 x 0.80 = 3.9936 hours i.e approx. 4 hours of backup time for 1KVA load if you have 12volt, 26AH battery of 16 nos.

Answer / sudarshan

i hv 600kva ups
how many batterys required
with formule

Answer / akshay kumar

UPS BACKUP TIME=CONNECTED LOAD/(BATTERY VOLTAGE*NO. OF
BATTERY)
SUPPOSE CONNECTED LOAD = 1KVA,BATTERY VOLTAGE=12,NO OF
BATTERY=2 THEN
BACKUP TIME =1000(1KVA)/12*2
=1000/24=41.67 AH
(IT MEANS BATTERY DISCHARGE CURRENT =41.67 AH IN ONE HR.)

IF YOUR BATTERY CAPACITY IS 150 AH THEN
BACKUP TIME=150/41.67
=3.35 HRS (APPROX)

CALCULATE THE TOTAL VOLTAGE DROP AND SELECT THE CABLE SIZE IN MM-SQARE FOR A PANEL-262KW AT 110 METER FROM THE SOURCE SUPPLY , SUPPLY VOLTAGE 240/415

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