A load in a factory consists of the following i. 9kW of lighting at unity power factor ii. A 12kVa motor at 0.75 p.f. lagging iii. A number of small motors taking 15kW at 0.6 p.f. lagging. The loads are balanced over the three phases of a 414V supply system. Determine A. The total kW B. The total kVar C. The overall kVa D. The overall power factor E. The line current. F. Draw the final power triangle of the combined load
A load in a factory consists of the following i. 9kW of lighting at unity power factor ii. A 12kVa motor at 0.75 p.f. lagging iii. A number of small motors taking 15kW at 0.6 p.f. lagging. The loads are balanced over the three phases of a 414V supply system. Determine A. The total kW B. The total kVar C. The overall kVa D. The overall power factor E. The line current. F. Draw the final power triangle of the combined load
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter12: Power System Controls
Section: Chapter Questions
Problem 12.7P
Related questions
Question
A load in a factory consists of the following
i. 9kW of lighting at unity power factor
ii. A 12kVa motor at 0.75 p.f. lagging
iii. A number of small motors taking 15kW at 0.6 p.f. lagging.
The loads are balanced over the three phases of a 414V supply system. Determine
A. The total kW
B. The total kVar
C. The overall kVa
D. The overall power factor
E. The line current.
F. Draw the final power triangle of the combined load
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