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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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L1 B VISA ,Am Mechanical Engineer passed out of 2006 batch and have any exper of 3 years 8 months am eligible for L1 b visa and am working in the same domain last 3 years 8 months
i have completed my degree in (BZC) group and after i have finished my pgdca. Now i am working in a company as a programmer analyst and i have been paying the tds tax since one year. Now my company would like to apply for L1 visa, Now my qauery is whether i am eligible with my education or not? and tds paying is necessary or not? now i am working in cmm level-4 comapny can u please anyone suggest about my L1 visa?
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my name is A rajender but in all my educational certificates except Xth standard it is A A rajendra. would it have any problem in my visa interview. kindly suggest.
Hi, My education is Diploma in Mechanical Engg and Post diploma in Metallurgy (10+4 Education) , I have 10 years experience in Energy projects. Already I have B1 visa and have a experience in Italy Business visit (3 months trip). Please let me know that I am eligible for getting the L1B visa or not?
I am Undergraduate is it possible to travel USA ?
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Hi, i am Diploma Holder in computer engg. + i have Done Diploma in Software engg (GNIIT Course).. of 3 yrs from private Institue called NIIT.. + i have 4years of Experience in IT Industry(MNC) ... Am I eligible to apply for L1
I was passed in 2007.did lectureship in engineering college for 2.5 yrs then did one professional course in 2010.from there i got placed to MNC now having 1.5yr of exp in software.Now my company wants to file L1 B visa for me.As dis visa is meant for people with specialized knowledge.Is this 3.5 yr of gap after my education and job will be reason for my L1 rejection.Do the visa officer check every educational certificate thoughrouly.I cant mention lectureship as my previous employer also.plz help I have my visa interview is on next week.
Hi, I got B-1 Visa in Jan09, I was in US for 3 months Now I am applying L1-Blanket, I want to know.. What questions Visa Officer can ask while interview?
I don't have any idea about visas. Could you please explain the diffrence betwen various visas.I mean L1 AND H1. In my company they applied for L1.
H1B Visa 
