Answer / parameshwar reddy

180AH bATTERY IS REQUIRED.
IF IT IS 72W CONSUMED FAN IT WILL GIVE 30HRS. BACK UP

Answer / gaja

Baside on your required time for back up up to 15 Hours
the battery will get veries

Answer / jp

min 120AH/12V.
if we consider fan load = 72W, then it will run for 11 hrs.

explain the details about vaccum circut breaker and advantages?

4 Answers   CPCL, Unisol,

---

Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.

0 Answers  

---

What is the dimension of A4 sheet in mm?

6 Answers   Bhel,

---

please write motor, transformer, Generator setting, fault level calculation of Tr.etc

0 Answers  

---

what is effect of length of air gap on performance of dc motor and generator?

0 Answers   DEI,

---

---

Two alternators say 1 & 2 are poised to parallel operation. But at the time of paralleing alternator 2 gets out of the system by tripping Earth fault relay. Please send me reply why this is happening?

2 Answers  

---

after syncnhronistion how generator speed controlled by grid

3 Answers  

---

what to do with nuetral when Generators are running in parrellel

11 Answers   APTransco,

---

how hydrogen cooled alternator undergo maintanence ? that is hydrogen when come in contact with air can result into explosions .

0 Answers   DVC,

---

How to calculate energy stored in a capacitance

0 Answers  

---

Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?

0 Answers   Quest,

---

What is the latest generation of circuit breakers called?

3 Answers   Epitome, Focus Energy, Jakson, KDC, L&T,

---