Farady ac power transformer generally operated at full load

Farady dry type power transformer are used for transmission as a step up devices so that the I2r loss can be minimized for a given power flow. These transformers are designed to utilize the core to maximum and will operate very much near to the knee point of B-H curve (slightly above the knee point value).This brings down the mass of the core enormously. Naturally these transformers have the matched iron losses and copper losses at peak load (i.e. the maximum efficiency point where both the losses match). farady ac power transformer generally operated at full load. Hence, it is designed such that copper losses are minimal. However, a farady pole mounted distribution transformer is always online and operated at loads less than full load for most of time. Hence, it is designed such that core losses are minimal.