×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Battery Bank Capacity Sizing

Battery Bank Capacity Sizing

Battery Bank Capacity Sizing

(OP)
How would i solve the total capacity of a battery bank when rating of equipment being serve (Momentary, Continous & Essential loads) are not available. We have 6 battery bank(48 volts each) in different locations and we intend to have a centralized bank (in lieu of the 6-bank). Can I just add all the Ampere-Hour rating of the existing battery bank with the sum be the basis of required capacity? Say, bank1=75AH, 133minutes reserve capacity, + bank2=160AH, 300minutes, + bank3=82AH, 155minutes, so on...with the total AH as required capacity OR get the highest rated Bank say 160 AH, 300 minutes reserve capacity plus additional factor (say 1.5) is sufficient. Any comment, suggestion or the proper method would be highly appreciated. Thank you.

RE: Battery Bank Capacity Sizing

I would be more comfortable looking at the loads, but if can't get them, and you are having no problems with the battery bank loading now, you will probably have a conservatively sized bank if you sum the existing Ah values.
I would definitely look at the distances and cable sizing involved from your new bank to the existing loads, however; voltage drop could be of concern.

RE: Battery Bank Capacity Sizing


Of potential applicability:

IEEE 485-1997 Recommended Practice for Sizing Lead-Acid Batteries for Stationary Applications

IEEE 1115-1992 Recommended Practice for Sizing Nickel-Cadmium Batteries for Stationary Applications

IEEE 1184-1994 Guide for the Selection and Sizing of Batteries for Uninterruptible Power Systems

IEEE 1189-1996 Guide for Selection of Valve-Regulated Lead-Acid Batteries for Stationary Applications
  

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources