The core loss of a single phase, 230/115 V, 50Hz power transformer is measured from 230 V side by feeding the primary (230 V side) from a variable voltage variable frequency source while keeping the secondary open circuited. The core loss is measured to be 1050 W for 230 V, 50 Hz input. The core loss is gain measured to be 500 W for 138 V, 30 Hz input. The hysteresis and eddy current losses of the transformer for 230 V, 50 Hz input are respectively
508 W and 542 W
V/f is constant, so peak flux density is unchanged. Let H,E be the50 Hz hysteresis and eddy-current losses. Then H+E=1050 and0.6H+0.36E=500. Solving gives H=508.33 W,E=541.67 W, approximately508 W and542 W.
Important Questions from Transformer Core Losses
Eddy current loss in a transformer can be reduced by _________.
Out of the following, which loss is also a category of magnetic losses?
Transformer at no-load behaves like:
In transformer, hysteresis loss depends on:
How can eddy current loss be minimised in Transformer?
