Question

Problem 3 (25 Points) The following 3-phase balanced loads are connected in parallel across a 3- phase Wye-connected, 60 Hz source of 4160 Volts line-to-line. Load #1 120 kVA at 0.8 PF lag (Wye connected) Load #2 180 kW at 0.7 lag (Wye connected) Load #3 13 Amps phase current, unity PF (Delta connected) a) Find the total complex power consumed by the three loads

          Problem 3 (25 Points)
The following 3-phase balanced loads are connected in parallel across a 3-
phase Wye-connected, 60 Hz source of 4160 Volts line-to-line.
Load #1
120 kVA at 0.8 PF lag (Wye connected)
Load #2
180 kW at 0.7 lag (Wye connected)
Load #3
13 Amps phase current, unity PF (Delta connected)
a) Find the total complex power consumed by the three loads

Problem 3 (25 Points)
The following 3-phase balanced loads are connected in parallel across a 3-
phase Wye-connected, 60 Hz source of 4160 Volts line-to-line.
Load #1
120 kVA at 0.8 PF lag (Wye connected)
Load #2
180 kW at 0.7 lag (Wye connected)
Load #3
13 Amps phase current, unity PF (Delta connected)
a) Find the total complex power consumed by the three loads

Added by Lori D.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Ankur S

Step 1

For Load #1: Apparent power (S1) = 120 kVA Power factor (PF1) = 0.8 lagging Using the formula: S = P / PF where P is the real power, we can calculate the real power for Load #1: P1 = S1 * PF1 = 120 kVA * 0.8 = 96 kW For Load #2: Real power (P2) = 180 kW Power Show more…

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Problem 3 (25 Points) The following 3-phase balanced loads are connected in parallel across a 3-phase Wye-connected, 60 Hz source of 4160 Volts line-to-line. Load #1 120 kVA at 0.8 power factor lag (Wye connected). Load #2 180 kW at 0.7 power factor lag (Wye connected). Load #3 13 Amps phase current, unity power factor (Delta connected). Find the total complex power consumed by the three loads.