Transformer Equivalent circuit

This circuit represent the equivalent circuit for the transformer. V1 is known as the terminal voltage. This is a per phase diagram or a one phase ¤ diagram. I will be using the symbol ¤ as phase from this point on. The transformer has 2 losses; No Load losses and Copper Losses. To obtain the parameters of the transformer 2 test must be performed; The No Load / Open Circuit test and the Short Circuit test.