Question

Three 3-phase balanced loads are connected in parallel across a 400-V, 3-phase, 3-wire balanced supply. Load 1: 12 kW, delta-connected, pf =1 Load 2: 9 kVA, wye connected load, pf = 0.866 lagging Load 3: 6 kVAR, delta-connected, pf = 0, capacitive Find the total current drawn from the line.

Name: three 3 phase balanced loads are connected in parallel across a 400 v 3 phase 3 wire balanced supply load 1 12 kw delta connected pf 1 load 2 9 kva wye connected load pf 0866 lagging load 3 58363
Uploaded: 2023-05-05T05:55:18-08:00
Duration: 6 min 38 s
Channel: Madhur L
Description: three 3 phase balanced loads are connected in parallel across a 400 v 3 phase 3 wire balanced supply load 1 12 kw delta connected pf 1 load 2 9 kva wye connected load pf 0866 lagging load 3 58363

          Three 3-phase balanced loads are connected in parallel across a
400-V, 3-phase, 3-wire balanced supply.
Load 1: 12 kW, delta-connected, pf =1
Load 2: 9 kVA, wye connected load, pf = 0.866 lagging
Load 3: 6 kVAR, delta-connected, pf = 0, capacitive
Find the total current drawn from the line.

Added by Matthew A.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Madhur L

05/05/2023

Step 1

Calculate the real power (P), reactive power (Q), and apparent power (S) for each load. Load 1: P1 = 12 kW, Q1 = 0 VAR, S1 = 12 kVA Load 2: P2 = 9 kW x 0.866 = 7.794 kW, Q2 = 9 kW x 0.5 = 4.5 kVAR, S2 = 10.39 kVA Load 3: P3 = 0 kW, Q3 = -6 kVAR, S3 = 6 kVA Note Show more…

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Three 3-phase balanced loads are connected in parallel across a 400-V, 3-phase, 3-wire balanced supply. Load 1: 12 kW, delta-connected, pf =1 Load 2: 9 kVA, wye connected load, pf = 0.866 lagging Load 3: 6 kVAR, delta-connected, pf = 0, capacitive Find the total current drawn from the line.