Do you have to refer core losses in equivalent circuit?

[kaalad]

Hi, I'm currently writing a lab report on single phase transformers and I need to determine the equivalent circuit with respect to the secondary side. I have already found the parameters with respect to the primary side so it is just a matter of referring them to the secondary side. What I would like to know is whether the core losses (R_o and (X_m) have to be referred as well and why.

I think they should be referred because they are a function of the current which would change depending on if it's in the primary or secondary side...right?
However, I'm not 100% sure so can someone tell me if I'm right or wrong in thinking this way please?

Thanks in advance

 

[donpacino]

core losses xm and ro can be modeled as a resistor and an inductor both in parallel with the primary coil.

In a lab report it would be very good to refer to them as it would demonstrate understanding of the system as well as an understand of non ideal effects.