Equivalent Circuit Of Transformer At No Load. Elementary transformer circuit diagram for open and short circuit tests. While primary winding carries a small current i 0 called no load current which is 2 to 10 of the rated current.
Here r 01 r 1 r 2 and x 01 x 1 x 2 are the total equivalent resistance and reactance of the transformer referred to as primary. This test is performed to find series branch parameters of an equivalent circuit such as equivalent impedance z o1 or z o2 total winding resistance r o1 or r o2 and total leakage reactance x o1 or x o2. But using this equivalent.
The no load current i 0 is divided into pure inductance x 0 taking magnetizing components i μ and non induction resistance r 0 taking working component i w which are connected into parallel across the primary the value of e 1 can be obtained by subtracting i 1 z 1 from v 1 the value of r 0 and x 0 can be calculated as r 0 e 1 i w and x 0 e 1 i μ.
The equivalent circuit of transformer is shown in the figure. Now let s dive into the topic and first of all let s get introduced to an actual transformer. Equivalent circuit of an ideal transformer at no load. Where i m magnetizing component i o sin φ o and i w core loss component i o cos φ o.
