Answer / k.prakashchandra

Ah*voltage /1000=stored energy in Kwh = back up time in
hours * load in KW. Here instead of load, rating of
inverter is given in Kva. So with load at 65% 0f inverter
rating or at 65% of stored energy, the above formula nearly
holds good

Answer / vivek

As per industrial thumb rule we need 12V/130AH battery to
have 1 hour backup for 1 KVA UPS. Therefore 130 is
iindicates AH which always constant for 1 KVA.

What does a Bode plot tell you?

0 Answers   GE,

---

What are the main faults of DC generators?

0 Answers   Mercantile Marine Department,

---

What is Mvar?how significant is in electrical energy transmission?

2 Answers   Areva,

---

what will happen if i connect or change line with phase terminal

1 Answers  

---

What are the raitings of Mcb,mccb and Acb in detail ??

0 Answers   Engineering Vision,

---

---

why the rotor current becomes in steady state during high slip region? please verify with equations.

0 Answers  

---

can any one explain about when EB supply failed then how the load will transfer onto DG's step by step.

1 Answers  

---

WHAT IS THE DIFFERENCE BETWEEN GENERAL INVERTER AND SOLOR INVERTER TELL ME PLZ

0 Answers   Epcon,

---

what is voltage present between to phases in a three phase motor?

1 Answers  

---

Any one Give me formula for to increse the power factor, 0.8 to 0.95, How much the KVAr Required

9 Answers   Emerson, Rajshree Sugars, Siemens,

---

what is ground fault current? is there any current flow takes place through ground? is it possible? if it's possible whether it affect human beings on earth near the fault or not?

2 Answers  

---

How the annunciator works ? How to do its wiring

0 Answers   Ford, MSEB,

---