In ups how can calculate the battery backup time
Answers were Sorted based on User's Feedback
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 |
my husband ll go due to his work purpose in USA in L1B visa,i have dependent visa,after reaching there i get work permission or not?
Hi My name is Karan, i have been to US on B1 visa and also stayed there for 3 months, now all that my company is decided to send me on L1 Visa, now i have a problem in my education certificates, which i have lost in the transit while shifting or relocating to different places/locations and am not in the position to submit my certificate, even if it is required and i have lost hope on getting my certificates back, and tried all way to get it, now am worried that and just wanna know with my work experience of 12 years, and i have all the supporting documents with related to my work experience. i.e. Right from offer letter to relieving letter and with these documents will i be granted L1 Visa, and someone please let me know what are the verification procedure done to issue an L1 visa, please give me detail. Thanks, Karan
My Company going to file L1-B next week.i completed my MCM FY in 2005 & due to health problem i was not able attend MCM final exam in 2006 hence i passed the MCM final in 2007 means i did 2 Year PG in 3 Year after that i have 3 year 6 month of IT experience.Do the 1 year passing diffrence in education can cause any issue in Visa. Please Advice.
the tallest minaret in the world sultan hassan mosque is loceted in
I did B.com with computers and then M.com. I worked in BPO for 1.5 years and then I moved to IT industry. I have IT experience of 32 months excluding BPO and i traveled US twice on B1 visa. Now my company is planning to file L1 for me. Am i eligible for L1 as i don't have B.E.
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
In all my certificates, name is mentioned as Arun Kumar GK...but in my passport my given name is Arun Kumar and my Surname is Krishna..Will that create any problem when i apply for US L1 visa? Please answer
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?
Hi, I have my visa interview next month. My passport will expire on 11/2010. My father name in passport Achupha where as in all certificates it is Achutha. In first name in first name instead of T it is given as P in 5t character. Will it be a problem for Visa. In application what shuld i mention in father name. the name which in passport or the one which is in certificates. Please help me out. Thanks Raghu
Hi i a mechanical Engineer graduate(non CS/IT) passed in 2007.I have an overall experience of 2 yr and 2 months in an IT Company.I am working since last 1 year in the current project.Am i eligible to apply for L1B blanket(My exp. is less than 3 Years).My manager wants me to travel to TEXAS but my company says it required 3 yrs of exp. for L1B blanket.If i am eligible then what is the chance of getting my VISA approved?? Thanks
Is there any minimum experience requirement before filing L1Visa apart from a years service in the same company in last three years time who is applying it for me...Please advise.
i have been rejected for B-1 visa on 13th jan 2009 now my company wants to apply L-1 visa for me . what will be the right time to apply for it ? is there any time limit in this case?