Assume that the two balanced loads in Fig. 12.22(a) are supplied by an 840-V rms 60-Hz line. Load 1 is Y-connected with 30 + j40 Ω per phase, while load 2 is a balanced three-phase motor drawing 48 kW at a power factor of 0.8 lagging. Assuming the abc sequence, calculate:(a) the complex power absorbed by the combined load, (b) the kVAR rating of each of the three capacitors ∆-connected in parallel with the load to raise the power factor to unity, and (c) the current drawn from the supply at unity power factor condition.
Answer: (a) 56.47 + j 47.29 kVA, (b) 15.7 kVAR, (c) 38.813 A.
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