The ct ratio is chosen 20% higher than the primary current from the hydrogenerator. I have heard that there are standard values to be used eg. 200/5 etc. Could sb please reply?
for any component it is always advisable to use standard values and ratings . . .
so if you wish to select a CT with primary at 120% of flc then you will do well to actually select the next higher standard rating above 120% . . . the same may then be anything between 120% and 140% . . . no problem . . . go ahead . . .
Yes! that is correct, If you are sizing CT make sure to consider the Burden VA and even the accuracy limit factor especially if the CT is for protective relaying.
CT Ratio in Hydropower Plant
Re: CT ratio in hydropower plant.
