The excitation branch impedances are given referred to the

Question

A 20-kVA 8000/480-V distribution transformer has the following resistances and reactances:

R­P = 32, RS = 0.05

XP = 45, XS = 0.06

RC = 250k, XM = 30k

The excitation branch impedances are given referred to the high-voltage side of the transformer.

a) Find the equivalent circuit of this transformer referred to the high-voltage side.

b) Find the equivalent circuit of this transformer referred to the low-voltage side.