What is the iron loss?
Answer: Transformers iron loss and no-load loss, which belongs to the excitation lossand is independent of the load, it does not change as the load changes, as long asthere is with the excitation voltage, it is only the voltage fluctuation and slightlychanges. Includes the core material hysteresis loss, eddy current loss and additional loss of three parts. No load loss that is invariant loss. Has nothing to do with the current, but with the element of the withstand voltage of.
When the transformer no-load loss: two secondary winding, a winding rated voltageapplied rated frequency sine wave, the active power consumed is called no-load loss.