A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-ampere transformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3-phase, 4-wire delta-connected secondary. For problems 1 through 4 show calculations and/or source of information. What is the full-load current in the primary? What is the full-load current in the secondary? What is the proper rating of the fuses to install for overcurrent protection of the secondary? What is the kilovolt-ampere of the bank if one of the transformers is removed? Sketch the secondary connections, and indicate where a 120-volt load could be connected.

A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-ampere transformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3-phase, 4-wire delta-connected secondary. For problems 1 through 4 show calculations and/or source of information. What is the full-load current in the primary? What is the full-load current in the secondary? What is the proper rating of the fuses to install for overcurrent protection of the secondary? What is the kilovolt-ampere of the bank if one of the transformers is removed? Sketch the secondary connections, and indicate where a 120-volt load could be connected.

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 3.35P: Consider a bank of this single-phase two-winding transformers whose high-voltage terminals are...

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