Assessing Load Factor (LF) and Loss Load Factor (LLF)
a) Copper losses of all transformers = Copper loss of each transformer capacity wise in kWh x Numbers of transformers capacity wise in the feeder
b) LF = Energy input to the transforme r/ (Peak load of the transforme r during the month × number of hours the transforme r is in service during the month)
c) LLF = 0.3 (LF) + 0.7 (LF)2
(Energy sent out on the 11kV feeder from SS -
d) Energy input to the transformer = Energy losses in the 11kV feeder) × Capacity of the transformer/Total transformer capacities in the feeder