A three-phase substation bus supplies a wye and a delta connected constant impedance loads. The loads are connected in parallel. A three-phase feeder with an impedance per phase of Z = 0.6+j1.8 Q connects the loads to a source as shown in the one- line diagram of Figure below. The loads draw the following three-phase power: P1 = 35 kW S2 = 30 kVA pfi = 0.90 (leading) pf2 = 0.85 (lagging) wye connected delta connected The line-to-line load voltage is 480 V. Detemine: (a) the impedance of each load per phase, (b) the total line current flowing through the feeder, (c) the line-to-line voltage at the substation

A three-phase substation bus supplies a wye and a delta connected constant impedance loads. The loads are connected in parallel. A three-phase feeder with an impedance per phase of Z = 0.6+j1.8 Q connects the loads to a source as shown in the one- line diagram of Figure below. The loads draw the following three-phase power: P1 = 35 kW S2 = 30 kVA pfi = 0.90 (leading) pf2 = 0.85 (lagging) wye connected delta connected The line-to-line load voltage is 480 V. Detemine: (a) the impedance of each load per phase, (b) the total line current flowing through the feeder, (c) the line-to-line voltage at the substation

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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