Example 33.7. A 5,000-kVA, 3-phase transformer, 6.6/33-kV, NY, has a no-load loss of 15 kW and a full-load loss of 50 kW. The impedance drop at full-load is 7%. Calculate the primary voltage when a load of 3,200 kW at 0.8 p.f. is delivered at 33 kV.

Example 33.7. A 5,000-kVA, 3-phase transformer, 6.6/33-kV, NY, has a no-load loss of 15 kW and a full-load loss of 50 kW. The impedance drop at full-load is 7%. Calculate the primary voltage when a load of 3,200 kW at 0.8 p.f. is delivered at 33 kV.

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 3.14MCQ: The ideal transformer windings are eliminated from the per-unit equivalent circuit of a transformer....

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Example 33.7. A 5,000-kVA, 3-phase transformer, 6.6/33-kV, NY, has a no-load loss of 15 kW
and a full-load loss of 50 kW. The impedance drop at full-load is 7%. Calculate the primary voltage
when a load of 3,200 kW at 0.8 p.f. is delivered at 33 kV.

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