AC MACHINES-1 (66761) Theory
Completion requirements
3. Interpret the principle of operation of transformer on no-load condition and load condition.
3.3. Draw the vector diagram of a transformer on no load condition.
An approximate phasor diagram for a transformer under no load condition is shown below.
We can conclude some results from the phasor diagram,
As the angle is ɸ0, So power factor will be cosɸ0.
Also, core loss = V1I0cosɸ0 = V1Iw W
Magnetizing (reactive) voltamperes = V1I0sinɸ0 = V1Iµ VAr
We have discussed everything about no-load transformer, we will discuss about losses provided by the working component of no load current, later in this series of single phase Transformer.