- Joined Oct 11, 2015
I am using a CT 60/5 A. I would like to know how would I select a burden resistance to convert 5A current to 400mV signal? I understand that V=IR will give the required resistance, however, for 5A even 1ohm resistance will develop 5V and hence the power dissipation of resistance has to be atleast 25W(P = V*V/R) which is huge. How should I calculate the resistance so that it remains in reasonable power dissipation level? What if the burden is rated at 1VA?