A 50 MVA, 11/132 kV three-phase, 50 Hz, generator transformer has guaranteed parameters as, load loss 160 kW at full load at 75°C, no load loss 30 kW and percentage reactance 9% at rated load. Calculate the following: *percentage regulation a full load and unity power factor *percentage regulation at 3/4 load and 0.85 lagging power factor *efficiency at full load and unity power factor *efficiency at 3/4 load and 0.85 lagging power factor (Use 5 decimal places)
A 50 MVA, 11/132 kV three-phase, 50 Hz, generator transformer has guaranteed parameters as, load loss 160 kW at full load at 75°C, no load loss 30 kW and percentage reactance 9% at rated load. Calculate the following: *percentage regulation a full load and unity power factor *percentage regulation at 3/4 load and 0.85 lagging power factor *efficiency at full load and unity power factor *efficiency at 3/4 load and 0.85 lagging power factor (Use 5 decimal places)
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
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.51P: The ratings of a three-phase three-winding transformer are Primary(1): Y connected 66kV,15MVA...
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A 50 MVA, 11/132 kV three-phase, 50 Hz, generator transformer has guaranteed parameters as, load loss 160 kW at full load at 75°C, no load loss 30 kW and percentage reactance 9% at rated load. Calculate the following:
*percentage regulation a full load and unity power factor
*percentage regulation at 3/4 load and 0.85 lagging power factor
*efficiency at full load and unity power factor
*efficiency at 3/4 load and 0.85 lagging power factor
(Use 5 decimal places)
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