1. A transformer bank (Figure P31) is formed using three identical single-phase transformers. The primary line-to-line voltage is 12.47kV, and the secondary line-to-line voltage is 208V. IA la 3-phase Ib 50KVA 0.90 pf (lag) 1в Figure P31 a) Calculate the secondary line currents Ia, , and I_[Hint: use a reference of ZVan=0°]: b) Calculate the primary line currents IA, IB, Ic, and the neutral current In. la A 3-phase Ib 50KVA 0.90 pf (lag) Is Figure P32 c) Suppose that the Phase C Transformer is to be removed for service as shown above (Figure P32). Calculate the resulting primary line currents Ia, IB, Ic, and the neutral current In. d) Calculate the minimum required kVA rating for the Phase A and Phase B transformers for the condition of part (c).
1. A transformer bank (Figure P31) is formed using three identical single-phase transformers. The primary line-to-line voltage is 12.47kV, and the secondary line-to-line voltage is 208V. IA la 3-phase Ib 50KVA 0.90 pf (lag) 1в Figure P31 a) Calculate the secondary line currents Ia, , and I_[Hint: use a reference of ZVan=0°]: b) Calculate the primary line currents IA, IB, Ic, and the neutral current In. la A 3-phase Ib 50KVA 0.90 pf (lag) Is Figure P32 c) Suppose that the Phase C Transformer is to be removed for service as shown above (Figure P32). Calculate the resulting primary line currents Ia, IB, Ic, and the neutral current In. d) Calculate the minimum required kVA rating for the Phase A and Phase B transformers for the condition of part (c).
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 3.53P: The ratings of a three-phase, three-winding transformer are Primary: Y connected, 66kV,15MVA...
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