How will I know that how many batteries I should connect to
my UPS unit?
Answers were Sorted based on User's Feedback
Answer / manoj sharma
It is very simple. You should first know the voltage rating
of your load supplied by UPS. Let it is X volt. Now you
have to decide which type of batteries you want to use
according to nature of your load and maintenance factors.
There are mainly Lead-acid battery, NI-Cd battery and VRLA
battery. If you use Lead-acid battery. A lead acid battery
has 2.2V/Cell standard. So Number of battey cells are X/2.2
for Laed acid battery. Now second thing is what is ampere
requirement for your load and for how much time. Let you
want 30 A current for 10 hours. Then capacity of your
single cell of battery must be 30*10 means 300AH.
Is This Answer Correct ? | 7 Yes | 0 No |
Answer / nbs
that is depending on your back reqirment.you should metion
ups rating and how much time you need back, input voltage (
1 phase or 3 phase).
Hwre iam giving one example:
if you have Ups =5KVA
bacck ups requirent is = 2hr
batteries/battery capacity reqirement:
dischage current = 5000X 0.8
-----
0.9 X 12
=370.37 A
battery capacity = 370.37 X2 = 740.AH
you can take = 4 No.s x180 AH
total no.of batteries = four 180AH batteris
Note:
at dischage current , 0.9 inveter efficency
12v battery voltage
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / shamim ahmed
You Should Know the KVA rating of your UPS, time you want
to get Back-up & the Battery input voltage of your UPS.If
your UPS rating is X , time T and the UPS input voltage is
V then the Battery current capacity is:
I=X*T*1.25/V*0.7 AHr
suppose battery input voltage of your UPS is 36V and you
find the Battery capacity from calculation is 300Ahr.
then you can use 3pcs 12V 300AHr battery in series or you
can use 2pcs 36V 150AHr battery in parallel.
Is This Answer Correct ? | 1 Yes | 1 No |
110 KW MOTER DOL STATER 240SQ.MM CABLE MOTER AND STARTER DISTANCE IS 110 METER WHAT IS VOTAGE IN MOTER END AND SYSTEM VOTAGE IS 415 V HOW I CAN CALCULTE
how to get more than 1000 ohms between 2 earth pits ?
If there is major % of Voltage harmonics in the system, how can it be control or reduced?
some times voltage does not built in small generators why ?
What are the advantages and disadvantages of negative feed back?
working principle of generators?
what are the breakdown voltage rating of mini- curcuit'transfarmer!
how to select size of hardware for linking aluminium busbar is it depend on area of busbar or current flowing through bus bar
I have 320 Kva DG Set his KWh running is 77 , how i can calculate into electrical unit .
2 Answers Anuj Enterprises, Schneider,
can anyone pls expain me about how can we design a cable tray??suppose if have to draw a 3 nos of 50 sqmm AYFY and 2 nos of 35 SQmm of AYFY cable through the tray..how can we design the tray size?? regards...
what is the function of governor in dg set
1 Answers Igarashi, Medispray, Reddy Labs,
what is doubling factor in making current of a breaker?