How we can calc. the Backup time of a battery Bank???
Answer Posted / avinash
First you must know the ampere-hour of your battery bank as
per the manufacture's specification.Now discharge the
batteries as per the C5 rating( for Ni-Cd batteries) or C10
rating (for Lead -acid Batteries).Discharging can be done
by connecting the positive and negative terminals of
batteries to the copper plates and immersing in a salt
solution, which will act as a load. The distance between
the plates can be adjusted to set the discharge current.
Measure the amount of discharge current and time till the
battery voltage of each battery in a bank drops to 1 Volt
if it is a 1.4 volt cell. Now multiply the discharge
current and time. This is the measure of the Amperehour
capacity of the bank.If the Amppere -hour capacity as per
the manufacture is available then you can determine the
percentage capacity of your bank at present.Remember that
charging and discharging of battery bank improves the
health of the battery bank.However, for lead -acid
batteries these cycles are around 750 or say 3 years. For
Ni-Cd batteries the life is around 25years or more if
maintained properly.Selecting a overated battery is also
not adviseable as it won't get discharged completely and
this may result in sulfation of batteries and early death
of battery bank.
Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
How to calculate the External Resistance required for 60HP slipring motor in case no any data of the Motor is available???
Both generator parallel condition shared load equally but one genrator taking ampere more than the other what are all the causes to make like this
Earth leakage relay basic knowledge principle
11000volt DG set carnt kaise banvay
whit is 33kv power 300*300 cable full current with formula
In our factory so many iron pillors are exists for supporting the shed/Hangar. If do more no of earthings at one piller instead of doing more earth pits in many locations and running earth strip around the hanger, I can save the money. Please suggest this method is acceptable as per Is specifications though the Earth resitance of the farthest piller is with in the limits as per IS specifications.
what is a synchronizing lamp ?
Is better to supply the voltage for static exciter from the auxiliary power source or from the SG terminals? And why?
Write down the name of 2 lady Bir Pratin of Bangladesh
Define settling time.
What is creepage distance..... what will be the value for different voltage level
How much weight an electrical engine can pull??
how to calculate insulation level of transformer?
Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.
can u give me a brief idea about power line carrier communication ??