curent transformer

This current transformer is a protection CT :

2500/5 A :The CT ratio , 2500 represents the rated primary current , 5 is the rated secondary current.

15 VA : the CT power , it is the apparent power supplied to the secondary circuit for the nominal (rated) secondary current .

5P : The accuracy class . This class defines the error limits guaranteed on the ratio and on the phase shift in specified power and current conditions.

20 : Accuracy limit factor which represents the ratio between the nominal overcurrent and the rated current .