Follow Our FB Page << CircleMedia.in >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...


How to calculate the ups battery back up? give the formula.

Answers were Sorted based on User's Feedback



How to calculate the ups battery back up? give the formula...

Answer / ananth

T = N.V.X / VA

T= Time in Hours
N = No. of batteries
V= Voltage of Battery
X= Amp-Hour of the Battery
VA= Load

Is This Answer Correct ?    156 Yes 29 No

How to calculate the ups battery back up? give the formula...

Answer / subir kumar manna

numbers of battery * ah of battery /output kva*130
34*200 /160*130
6800/20800
0.32 hours .

Is This Answer Correct ?    93 Yes 48 No

How to calculate the ups battery back up? give the formula...

Answer / bhushan

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


Batt Voltage X No.of (Batteries) X Ah (Single Battery) /
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

Is This Answer Correct ?    55 Yes 14 No

How to calculate the ups battery back up? give the formula...

Answer / dhruvendra

V*AH/VA

Is This Answer Correct ?    43 Yes 22 No

How to calculate the ups battery back up? give the formula...

Answer / a. dutta

To get one hour battery backup:

BATTERY AH = 1000 × VA × PF /( NO. OF BATTERY × BATTERY
VOLTAGE × LOAD% × PF

Is This Answer Correct ?    27 Yes 6 No

How to calculate the ups battery back up? give the formula...

Answer / sayyed fayyaz ahmed

Calculating the UPS and Battery Backup Time
Before calculating the Battery Backup, let us know a few
factors that vary battery backup.
For and UPS with 875Va we can us a maximum load of 640
watts 677Va we can us a maximum load of 540 watts
The main thing we should understand is that whatever may be
the UPS wattage the battery backup will not vary.
The battery backup will only vary depending on the battery
Ah and the Usage Load.
To calculate UPS backup, we have a simple formula.
UPS Backup = Battery Ah * (Volts/Load) * (1/Power Factor)
Example: Let us calculate the backup for a system UPS
Load is the usage power, suppose we are running a PC then
the load is around 300 watts
Power Factor varies for device to device, the average power
factor is 1.4
Voltage is the voltage of the battery.
For a single battery the voltage is 12v.
If the batteries are connected in a series Voltage = 12 *
no. of batteries.
Battery Ah is the battery ampere used for the ups,
System UPS battery AH is 7
Then Battery Backup = 7 * (12/300) * (1/1.4)
= 7 * (0.04) * (0.7)
= 0.19 hours
= 11.4 Minutes
Note: You can use the same formula for calculating the
battery backup for home UPS or an INVERTER.

Is This Answer Correct ?    19 Yes 12 No

How to calculate the ups battery back up? give the formula...

Answer / narayanarao.s

back up( in hours)= system dc volts x AH rating(
battery)/kva(load)x system power factor.

Is This Answer Correct ?    11 Yes 5 No

How to calculate the ups battery back up? give the formula...

Answer / balajiram

Time=ups efficiency*battery efficiency*battery low volts*battery AH/ups output(watts)

Is This Answer Correct ?    14 Yes 12 No

How to calculate the ups battery back up? give the formula...

Answer / prabhu

Battery Backup= No.of Batteries X Voltage of the batteries X Capacity of the batteries X Pf (0.8) / Load in Watts

Is This Answer Correct ?    3 Yes 2 No

How to calculate the ups battery back up? give the formula...

Answer / prakash dhanshetty

backup time=(kva rating*power factor)!dc low of system

Is This Answer Correct ?    8 Yes 8 No

Post New Answer



More Electrical Engineering Interview Questions

What are merits & De-merits of State-Space Method? What is series programming, parallel programming, general programming & direct programming ? And, difference between these programmings Techniques ?

0 Answers  


As all us know that the capacitor panel is connected to improve the power factor when it is PF is low. whether we can connect the capacitor panel on D.G. side(? If it is yes means why?

1 Answers   Aricent, Essar,


what is the IS foe lightning arrester?

0 Answers  


what is meant by phase &line voltage, how its differ from each other ?

5 Answers  


What is electrical diversity factor in electrical installations?

0 Answers  






why batteries are rated in ampere hour

1 Answers  


what is the working principle of electrical generator

1 Answers  


what is the uses of C.V.T transformer in switch yard?

4 Answers   L&T,


WHY RATING OF VCB NOT LESS THAN 630A

0 Answers  


why we use taping of transformer on HT side?

4 Answers  


is power factor correction related with vector group of transformer i.e:Dyn11?

1 Answers  


What is the difference between AC Drive and VFD?

10 Answers   ITC Infotech,






Categories
  • Civil Engineering Interview Questions Civil Engineering (5075)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4444)
  • Electrical Engineering Interview Questions Electrical Engineering (16604)
  • Electronics Communications Interview Questions Electronics Communications (3915)
  • Chemical Engineering Interview Questions Chemical Engineering (1092)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (214)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (258)
  • Instrumentation Interview Questions Instrumentation (2992)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (123)
  • Power Plant Engineering Interview Questions Power Plant Engineering (170)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (0)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1377)