Question

What is the short circuit capacity of a 72 KVA transformer with a 240V secondary and an impedance of 3%?

Answer 1

The short circuit capacity of the 72 KVA transformer with a 240V secondary and a 3% impedance is 2400 KVA.

Step-by-step explanation:

The short circuit capacity of a transformer refers to its ability to handle the high current that occurs during a short circuit. It is determined by the transformer's impedance and can be calculated using the formula:

Short circuit capacity (in kVA) = Rated kVA / % Impedance

In this case, the rated kVA of the transformer is 72 KVA and the impedance is 3%. Plugging these values into the formula, we get:

Short circuit capacity = 72 KVA / 0.03 = 2400 KVA