Answer / ravi

depending up on the number of windings in primary and in
secondary winding,we can calculate the CT and PT rating of
the transformer.
N2/N1=V2/V1

Answer / m u shetty

First we should know whether CT /PT is used for measurement
purpose or for protection ,primary currentand voltage
After getting the above details ,we can decide the
specification of CT/PT like accuracy
class,ratio,burden,type etc

Answer / nagarajan

OK BUT WE WANT MORE DETAILS WITH FORMULA ALSO

Answer / hanu1985

OK BUT CAN GIVE SOME MORE DETAILS FOR ME

Answer / chandrasen mourya

Its Basically the requirement of the client.
ie. The client operationg load along with consideration for
future loads. This gives you the power, now for the Volatge
& current we have to do a bit survey regarding which
voltage level is available in the vicinity & the availibity
of the same from the electricity board. This gives us the
Volatge rating & current is now calculated.
Now we have to see what protection are required & depending
on that we select the no of cores in both The CTS & PTS.

What is the difference between voltage transformer and potential transformer?

38 Answers   ABB, ETA, Maritime Academy, MSEB, Reliance Jio, Voltas, Wipro,

Tell me harmfull effects of over voltage,under voltage,spike,surge,transient & noise.

1 Answers  

What is the lockout relay

0 Answers  

Is there any relation between transformer capacity and its bdv?

1 Answers  

what type of battery used for starting D.G?state its function?

2 Answers  

What is master trip relay? How does it work?

1 Answers  

wich type of cable is selected for wiring of 20hp motor?

5 Answers   Alchemist,

Can we install and run MCCB suitable for 440v 3Phase 4wire system, on a 220V 3Phase 4Wire System.

3 Answers  

what is meant by CT burden = 10 VA?

1 Answers  

which fault is severe and why?between lll fault and lllg fault which fault is severe and y?

0 Answers   GE,

What is the phase relationship between the primary and secondary voltages of a transformer?

0 Answers  

I want to give Power supply to a house from the Feeder, Total Load of the House is 128 KW, how to calculate cable size for this load ?

5 Answers