The objective of this section is review commonly published transformer data and examine techniques for massaging raw transformer data into the form required by the parameters of analysis algorithms that are based on the complex nodal admittance matrix Ybus.
If magnetizing impedance is neglected, the steady state characteristics of a transformer are captured by its leakage impedance, voltage transformation properties (i.e. transformation ratio and phase shift). Tap-changing-under-load (TCUL) devices are also characterized by their voltage regulation capabilities.