The efficiency of Farady distribution transformer

Farady distribution transformer cannot be run with constant load throughout 24 hours. At day peak time it’s loading is high, whereas in night lean time its loading may be negligible. So selecting a transformer depending upon its conventional efficiency is not practical and economical, too. As a solution of these problems, the concept of all day efficiency of distribution transformer came into the picture. So this efficiency is same as the efficiency of distribution transformer. A transformer has mainly two types of losses, these are, iron losses and copper losses. Iron loss, which is also referred as core loss, consists of hysteresis loss and eddy current loss. These two losses are constant when the farady transformer is charged. That means the amount of these losses does not depend upon the condition of secondary load of farady on load tap changer transformer. In all loading condition, these are fixed. But the copper loss which is also referred as I2R loss entirely depends upon load .