Answer Posted / sanat ullah khan

Answer
# 1 it depond upon the output load

Thanks for Marking this Answer 0 Krish
Answer
# 2 its depend on current of the load which connected to
the battery amphere per hour if a battery having 10AH it
can give 10A load upto a hour

Thanks for Marking this Answer 0 Karthik Raman.b
Answer
# 3 Hi Krishna,

V HV AN 65AH 32 No's of Batteries connected 60kva UPS,

What will be the full load backup time???

Thanks for Marking this Answer
Answer
# 4 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.

Thanks for Marking this Answer 0 Avinash

what is the safety of voltage power transformer(2250KVA0

2038

---

What is excitation in case of dc motor?

1227

---

explain the Trip supervision circuit

2201

---

If I want to buy a new Xformer for my plant what are the main parameter will I need to check?

1943

---

there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

1982

---

What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?

1723

---

How to design a Unit auxiliary transformer for a power house having a unit of 65 MW and Generating voltage of 11 KV and Secondary voltage of 433V

2183

---

Why single phase induction motors are not self starting ?

1706

---

how to remover corona effect and hysteresis losses from contactor

2074

---

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating

2465

---

why genarator genarating voltage 11 KV?

1837

---

What are the effects of electrical faults?

1076

---

What is lighting kitts.

2166

---

how generator load test is conducted?what are the steps?

1652

---

If we want to change a contactor of faulty one what are the conditions want to fullfil

2045

---