Question

Suppose you need to set a primary protection system for a step-up power transformer in a
power plant. Which relay can be used for this purpose?​

Answer 1

Answer:

Protective relays

Explanation:

power systems are connected in the secondary circuits of current transformers and potential transformers. In current transformers, primary current is not controlled by condition of the secondary circuit. Hence primary current is dominant in the operation of current transformers.