Considering the transformer loss
, it is a aperiodic component and decays with time.
In this case, a 250:50 [ohms] impedance transformer is required for each output port and an extra measurement is required to measure the transformer loss
for each output port in addition to the port's insertion loss/gain measurement.
Reference  used a standardized engineering approach according to IEEE Standard C5791  to preliminarily assess the impact of increased ambient temperature on transformer loss
of life at five locations in the USA.
Optimization of transformer design for high efficiency and high-power density converter is subjected to the reduction of overall transformer losses
. These losses are composed from losses in windings and losses in transformer core (hysteresis losses, eddy currents).
Thus, the value engineered solution with 13.8kV/60Hz again saved not only the initial cost by the elimination of transformers, but also operating cost was saved by avoiding 2 to 3 per cent transformer losses
For example, accounting for transformer losses
, a 15-kVA AC source will require a 17-kVA three-phase input transformer weighing approximately 140 lb.
"The unbalanced load cost on transformer losses
at a distribution system" Stockholm, pp: 10-13.
Comparison of distribution transformer losses
and capacity under linear and harmonic loads.
The losses occurring within the DC/DC distribution converters.
At low wind speeds the transformer losses
are dominant; see Figure 8.
The effects of harmonic components on transformer losses
of sinusoidal source supplying nonlinear loads, American Journal of Applied Sciences, vol.