Example 2.4 Three loads are connected in parallel across a 1400-V rms, 60-Hz single-phase supply as shown in Figure 2.8. Load 1: Inductive load, 125 kVA at 0.28 power factor. Load 2: Capacitive load, 10 kW and 40 kvar. Load 3: Resistive load of 15 kW. (a) Find the total kW, kvar, kVA, and the supply power factor. (b) A capacitor of negligible resistance is connected in parallel with the above loads to improve the power factor to 0.8 lagging. Determine the kvar rating of this ca- pacitor and the capacitance in iF.

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Subject is Power system analysis
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Example 2.4
Three loads are connected in parallel across a 1400-V rms, 60-Hz single-phase
supply as shown in Figure 2.8.
Load 1: Inductive load, 125 kVA at 0.28 power factor.
Load 2: Capacitive load, 10 kW and 40 kvar.
Load 3: Resistive load of 15 kW.
(a) Find the total kW, kvar, kVA, and the supply power factor.
(b) A capacitor of negligible resistance is connected in parallel with the above loads
to improve the power factor to 0.8 lagging. Determine the kvar rating of this ca-
pacitor and the capacitance in µF.
Transcribed Image Text:L Example 2.4 Three loads are connected in parallel across a 1400-V rms, 60-Hz single-phase supply as shown in Figure 2.8. Load 1: Inductive load, 125 kVA at 0.28 power factor. Load 2: Capacitive load, 10 kW and 40 kvar. Load 3: Resistive load of 15 kW. (a) Find the total kW, kvar, kVA, and the supply power factor. (b) A capacitor of negligible resistance is connected in parallel with the above loads to improve the power factor to 0.8 lagging. Determine the kvar rating of this ca- pacitor and the capacitance in µF.
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