Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Concept explainers

Single Phase AC Circuit
Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.
Question
Load ID L1 L2 L3 240 √2 cas (1000+) V P 1 kW 0.98 KW 3.5 kW L1 L2 Q O 1 KVAR 3.57 KVAR total P = 5.48 KW total Q= 2.57 KVAR total S = 7.4 KVA L3 S 1 KVA 1.4 KVA 5 kVA pf 1.0 0.7 lead 0.7 lag overall power factor: 0.74 a. Using the same load details from table, how much Q must be compensated by the added capacitor to reach an overall power factor of 0.98 lagging? Use KVAR. b. What must be the value of the capacitor to achieve the new power factor? Use µF.
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Transcribed Image Text:Load ID L1 L2 L3 240 √2 cas (1000+) V P 1 kW 0.98 KW 3.5 kW L1 L2 Q O 1 KVAR 3.57 KVAR total P = 5.48 KW total Q= 2.57 KVAR total S = 7.4 KVA L3 S 1 KVA 1.4 KVA 5 kVA pf 1.0 0.7 lead 0.7 lag overall power factor: 0.74 a. Using the same load details from table, how much Q must be compensated by the added capacitor to reach an overall power factor of 0.98 lagging? Use KVAR. b. What must be the value of the capacitor to achieve the new power factor? Use µF.
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Step 2: a. reactive power calculation :
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Step 3: b. value of the capacitor :
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