Overheating of Transformer Happens Due to | Power System Protection MCQ

Overheating of the transformer happens due to:

1. Overloading
2. Short-circuits
3. Both of these
4. None of these

Correct answer: 3. Both of these

There are two major facts which cause overheating in transformer:

1. Overloading
2. Short-circuits

Alongside overloading and short-circuits, failure of the transformer cooling system might also lead to overheating. However, this is rare as compared to the above-mentioned reasons.

Transformers are protected using thermal accessories for alarming the operator at generation station and yards.