Equivalent Circuit Of Transformer. Equivalent circuit of a transformer is a schematic representation of a practical transformer that shows all electrical parameters such as winding resistance reactance admittance susceptance primary and secondary voltages currents etc. Transformer equivalent circuit in phasor form in phasor form the transformer equivalent circuit takes the form shown in fig 3.
Equivalent circuit of transformer. Calculation of various parameters of the transformer like resistance reactance impedance on the primary and secondary side can be done easily which in turn also used for determining the regulation efficiency and losses of the. B both the primary and secondary winding possesses resistance denoted as r 1 and r 2 respectively.
Theidealizing assumptions are listed below.
The equivalent circuit diagram of the transformer is shown below. The voltmeter measures the normal voltage which is applied in the low voltage winding let w is the wattmeter reading and v 1 is the applied voltage and i 0 is the ammeter reading then w v 1 i 0 cos φ 0 cosφ 0 w v 1 i 0 and iµ is the magnetizing component of no load current iw is the core loss component of no load current from the vector diagram of no. Let resistances and reactance of primary and secondary windings be r 1 and r 2 and x 1 and x 2 ohms respectively and let transformation ratio be k. Under certain conditions the transformer can be treated as an ideal transformer.
