The bus bars of a power station are in two sections A and B separated by a reactor. Connected in section A are two 12 MVA generators of 15% reactance each and to B, 8 MVA generator of reactance 10%. The reactor is rated 8 MVA and 15% reactance. Two feeders are connected to bus bar A through transformers, each rated at 4 MVA and 5% reactance. Determine the maximum short circuit MVA with which circuit breakers on the outgoing side of the transformers have to deal.
The bus bars of a power station are in two sections A and B separated by a reactor. Connected in section A are two 12 MVA generators of 15% reactance each and to B, 8 MVA generator of reactance 10%. The reactor is rated 8 MVA and 15% reactance. Two feeders are connected to bus bar A through transformers, each rated at 4 MVA and 5% reactance. Determine the maximum short circuit MVA with which circuit breakers on the outgoing side of the transformers have to deal.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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The bus bars of a power station are in two sections A and B
separated by a reactor. Connected in section A are two 12
MVA generators of 15% reactance each and to B, 8 MVA
generator of reactance 10%. The reactor is rated 8 MVA and
15% reactance. Two feeders are connected to bus bar A
through transformers, each rated at 4 MVA and 5% reactance.
Determine the maximum short circuit MVA with which circuit
breakers on the outgoing side of the transformers have to
deal.
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