Hello,
In many transformer questions, I get for example ' A 230V 120KVA three phase load 0.85 PF (lag)... '.
My question is:
The power factor given , Is it the cosine of the angle between the current and voltage in the phase or line ?

 

Is it the cosine of the angle between the current and voltage in the phase or line ?

What do you mean by "phase" and "line".
The power factor is always measured between two lines (or across a phase).