why the secondary winding of the transformer is not open circuited ?

Answer Posted / raghavendran.r

I believe that the questioner meant to ask about Current Transformer where it will result in CT BURN OUT if the secondary is left open due to immense flux built up at the secondary.This is why the CT is built to operate in subtractive polarity which will cancel out the flux built from the primary on secondary.

Otherwise in a VT or in normal power transformer the secondary winding should never be shorted bcoz it will result in severe short circuit.which is very dangerous.

Hopes this answers your query.

Is This Answer Correct ?    17 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the difference between electronic regulator and ordinary rheostat regulator for fans?

575


Why we use Electrical energy rather than any other type of energy, mostly? Explain behavior of open secondary CT and short circuited secondary PT in energized condition?

1370


what is reactive power?, why its measured in VA ? is it transient behavior of system?

1795


why moisture formation found in XLPE Armoured cable outer sheath

1336


What are the parts in a inverter?

1571






how to meas-our losses for L.T & H.T

1686


I have a current transformer with 1 main reading meter with transformer outside the building and a control panel having 5 CT reading meters with black round coils inside the building. I want to know, A) when current pass through the Transformers, will the current be reduced or be the same and after that B) when current pass through the CT meters with black round coils, will the current be reduced or be the same. C) in the above process will the reading of the main meter be same or different, from the total reading of all the 5 CT meters.

1381


what is the pre charge circuit,what will be work which function it will be use plz tell me

1457


1 Ton is equal to how many watts?

675


what is the use of Auto re-closer?

1651


what is the use of sdf?

1687


what is the practical application of full adder circuit?

1420


please explain to me how to calculate current,voltage,resistance with formula??

981


What is trip and closing coil in cb? Why need of them

1017


how wecalculate breaking capcity of acb mcb mccb .explain with example

1409