Hi friends,
Thank you for the reply .
But I know that protection class CT(PX class) error is measured in terms of Turns ratio not current ratio , unlike 5P20 and class x CT.
My doubt is why we use Turns ratio for PX whereas Current ratio for others?
Any significant reason to do so?
Regards,
Dear Friends,
Could someone tell me the reason for following:
In PX class Current transformer ,as per IEC the acceptance criteria for error is turns ratio error shall be less than .25%. But in class x CT it is current ratio error as the deciding criteria. why in PX class it is Turns ratio and...
