Problem-15 Three 10, 100 kVA, 2300/460 V, 60 Hz transformers are connected to form a 30, 2300/460 V transformer bank. The equivalent impedance of each transformer referred to the low-voltage side is 0.045 +j0.16 Q. The transformer is connected to a 30 source through 3@ feeders, the impedance of each feeder being 0.5 +jl.50. The transformer delivers full load at 460 V and 0.85 power factor lagging. (a) Draw a schematic diagram showing the transformer connection. (b) Determine the single-phase equivalent circuit. (c) Determine the sending end voltage of the 30 source. (d) Determine the transformer winding currents.
Problem-15 Three 10, 100 kVA, 2300/460 V, 60 Hz transformers are connected to form a 30, 2300/460 V transformer bank. The equivalent impedance of each transformer referred to the low-voltage side is 0.045 +j0.16 Q. The transformer is connected to a 30 source through 3@ feeders, the impedance of each feeder being 0.5 +jl.50. The transformer delivers full load at 460 V and 0.85 power factor lagging. (a) Draw a schematic diagram showing the transformer connection. (b) Determine the single-phase equivalent circuit. (c) Determine the sending end voltage of the 30 source. (d) Determine the transformer winding currents.
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Transcribed Image Text:Problem-15
Three 10, 100 kVA, 2300/460 V, 60 Hz transformers are connected to form a 30, 2300/460 V
transformer bank. The equivalent impedance of each transformer referred to the low-voltage side is
0.045 + j0.16 Q. The transformer is connected to a 30 source through 34P feeders, the impedance of
each feeder being 0.5 +jl.5 Q. The transformer delivers full load at 460 V and 0.85 power factor
lagging.
(a) Draw a schematic diagram showing the transformer connection.
(b) Determine the single-phase equivalent circuit.
(c) Determine the sending end voltage of the 30 source.
(d) Determine the transformer winding currents.
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