Question

A four set of 750KW Generator rated at 400V, 3Ph, 0.8 P.F, 60Hz, 1800 rpm connected in parallel
is said to operate during a power interruption. The continuous operation of the generator is said
the last for 24 Hrs. Generator operation is working at 2 sets at a time once it reached the 40%
connected loading during synchronization then will transfer to the other 2 sets after 4 hours.
This sequence happens for the whole duty cycle (24 hours). How much power is consumed
during 1 hour of operation if the required power efficiency is 80%. The 100% connected load is
at 1.75MVA. (neglect the type of connection Y-Y or Y-delta). What is the possible voltage
regulation. (Assumed possible variable and values to complete the equation.)

Answer 1