Given a 115kV/13.2kV distribution transformer rated at 30 MVA (OA) with an 8% nameplate impedance (Per Unit Transformer Impedance), calculate: The Full Load current in amps The Short Circuit current in amps The FA rating in MVA The FOA ratings in MVA.

Given a 115kV/13.2kV distribution transformer rated at 30 MVA (OA) with an 8% nameplate impedance (Per Unit Transformer Impedance), calculate: The Full Load current in amps The Short Circuit current in amps The FA rating in MVA The FOA ratings in MVA.

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

Chapter14: Power Distribution

Section: Chapter Questions

Problem 14.8P

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

Given a 115kV/13.2kV distribution transformer rated at 30 MVA (OA) with an 8% nameplate impedance (Per Unit Transformer Impedance), calculate:

The Full Load current in amps
The Short Circuit current in amps
The FA rating in MVA
The FOA ratings in MVA.

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