Answer / kiranganesh

I use online and normally all guys use this one only.Because
when main supply is there than it will switches to load
directly and same time charges its battery,if main supply cuts
than it will discharge its battery

Answer / pankaj rathi

In online ups Battery circuits remains allways in line i.e. UPS is connected to load through battery bank. But in ofline ups battery ckt remains as a standby .whenever the supply get cut then ups take the load through battery system.

how we can improve P.F. by using capacitors ?

22 Answers  

---

wwht is wave trap used in ht line

4 Answers  

---

What is the importance of counter based plan & how is it scheduled?

0 Answers   TATA,

---

what are the reasons of low voltage during start the DG?

1 Answers   Godrej, Tata Power,

---

Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?

0 Answers  

---

the current which flows during lightening is ac or dc,,,,,,,,,,, WHY

6 Answers  

---

If R and Y terminals are short circuited,then power will cut. we all know that power cannot be stored.what will happen to already generated power at power station?

3 Answers  

---

How out of step protection relay works?

0 Answers   APL,

---

What is transister , thermister , thyrister? what is its function? where this using?

1 Answers  

---

How i measured Bus bars weight without wighting ?

3 Answers   Encom,

---

what is effect of reverse c.t connection on metering.

4 Answers   Cushman Wakefield,

---

What are different types of control systems?

0 Answers  

---