| Types.VoltageModule | RatedU1 | | Rated voltage at terminal 1 in kV |
| Types.VoltageModule | RatedU2 | | Rated voltage at terminal 2 in kV |
| Types.VoltageModule | U1Nom | | Nominal voltage at terminal 1 in kV |
| Types.VoltageModule | U2Nom | | Nominal voltage at terminal 2 in kV |
| Types.PerUnit | rTfoPu | RatedU2/RatedU1*U1Nom/U2Nom | Transformation ratio in pu: U2/U1 in no load conditions |
| Modelica.SIunits.Resistance | R | | Resistance of the transformer in ohm |
| Modelica.SIunits.Reactance | X | | Reactance of the transformer in ohm |
| Modelica.SIunits.Conductance | G | | Conductance of the transformer in S |
| Modelica.SIunits.Susceptance | B | | Susceptance of the transformer in S |
| Modelica.SIunits.ComplexImpedance | Z | Complex(R, X) | Impedance of the transformer |
| Modelica.SIunits.ComplexAdmittance | Y | Complex(G, B) | Admittance of the transformer |
| Types.ComplexImpedancePu | ZPu | Complex(R/(U2Nom*U2Nom/SystemBase.SnRef), X/(U2Nom*U2Nom/SystemBase.SnRef)) | Impedance in pu (base U2Nom, SnRef) |
| Types.ComplexAdmittancePu | YPu | Complex(G*(U2Nom*U2Nom/SystemBase.SnRef), B*(U2Nom*U2Nom/SystemBase.SnRef)) | Admittance in pu (base U2Nom, SnRef) |
| Types.ActivePowerPu | P10Pu | | Start value of active power at terminal 1 in pu (base SnRef) (receptor convention) |
| Types.ReactivePowerPu | Q10Pu | | Start value of reactive power at terminal 1 in pu (base SnRef) (receptor convention) |
| Types.VoltageModulePu | U10Pu | | Start value of voltage amplitude at terminal 1 in pu (base UNom) |
| Types.Angle | U1Phase0 | | Start value of voltage angle at terminal 1 in rad |
