Question

& Differential system of transformer protec-
tion provides protection against
(i) earth-faults only
(ii) phase faults only
(iii) both (i) and (ii)
(iv) none of the above​

Answer 1

Answer:

Explanation:

The power transformer protection is realized with two different kinds of devices, namely the devices that are measuring the electrical quantities affecting the transformer through instrument transformers and the devices that are indicating the status of the physical quantities at the transformer itself.