what is power losses of transformer?

Power losses in a transformer primarily occur due to two factors: copper losses and core losses. Copper losses arise from the resistance in the windings when current flows, resulting in heat generation. Core losses, also known as iron losses, occur in the transformer’s magnetic core due to hysteresis and eddy currents. Together, these losses reduce the overall efficiency of the transformer, typically ranging from 1% to 5% depending on design and load conditions.