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 |
Hi I am going to File for L1 visa in a few days, however there is a mismatch in my personal experience. I have a total experience of 5 years and worked in 3 different companies. The first company I worked initially lasted 1.5 years, however, I was fired from there due to low revenue. However they had given me 6 months extra experience in my experience certificate, also I had been provided 3 months salasr when I left. However, I joined my second company in 1 month time. Therefore there was an overlap in my experience, i.e. My first two exeperience certificates show that I worked from Feb 2005 to May 2005 in two different companies. I am not sire if this will create problems while there is BG verification. Please let me know the consequences of this if I apply for L1 visa. Thanks in advance Rahul
3 Answers College School Exams Tests, Infosys,
why did you choose this line of work
Why have you chosen L1-B visa rather than H1-B or Business visa?
Hi, I am working in TCS, I got an offer from a small company and I applied for B1 visa through tht company and it got rejected 2 months back. So now still im continuing with TCS. Can i apply for L1b blanket through TCS. If not what are the conditions to reapply for the same. Please Let me know ASAP.
I have a stampled L1B VISA last April(April 2008) but I haven't travelled till date ?What is the last date in 2009 when I have to travel .
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?
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
Do we have to face an interview for L1 visa or we just have to post all are documents and passport and if we are eligible they will stamp visa and mail it back to us????
My L1B Visa got rejected on 22nd Oct. When can the company file H1B for me. Is there any cooling period required after L1B rejection. Also what is the processing time for H1B Visa
I am Undergraduate is it possible to travel USA ?
My company X is going to file L1 Individual Petition. Can I simultaneously apply for some company in US lets say B and I clear my interview and they apply for my H1 Visa. Will there be a problem in processing L1 Individual by company A as other company B may also start processing my H1 at the same time( as it takes some time to process H1). Please advice what should I do. Let L1 get processed first, then sit in interview of company B...Suggest me what should I do?
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?