4. A 3-phase, 230 V, 27 kVA, 0.9 PF (lag) load is supplied by three 10 kVA, 1330/230 V, 60-Hz single-phase transformers connected in Y-A as shown in Fig. 3. The equivalent impedance of one transformer referred to the LV side is = 0.2773264.359°N and ZtLv ZF2 = 5.0636280.9097° ZF1 = 0.0153278.6901° Find the substation voltage if the load voltage is 230 V. 230 V V Substation ZF1 ZF2 F Load Y A Fig. 3.

4. A 3-phase, 230 V, 27 kVA, 0.9 PF (lag) load is supplied by three 10 kVA, 1330/230 V, 60-Hz single-phase transformers connected in Y-A as shown in Fig. 3. The equivalent impedance of one transformer referred to the LV side is = 0.2773264.359°N and ZtLv ZF2 = 5.0636280.9097° ZF1 = 0.0153278.6901° Find the substation voltage if the load voltage is 230 V. 230 V V Substation ZF1 ZF2 F Load Y A Fig. 3.

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 3.26MCQ: In per-unit equivalent circuits of practical three-phase transformers, under balanced thr-phase...

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Similar questions

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