A large industrial plant receives 3-phase electric power from the local utility. The following loads are being fed in the plant at 11.0 kV (line)
(a) 1.6 MVA , .7 pf (lag)
(b) 2.0 MW at 0.8 (lag) power factor,
(c) 800 kW of pure heating and lighting (negligible reactive power) load, and
(d) A number of induction motors: power output total of 3,000 HP, with a composite efficiency of 0.85 and power factor of 0.88 (lag) respectively.
1. Calculate the total (composite) load power factor, true power, reactive power and apparent power.
2. Also calculate the full-load current and the amount of capacitive KVAR needed to bring the overall power factor to .95 lagging.