Solved Problems: Single-Phase Transformers Problem 1 A 19.2 KVA, 19200/480-V, 60 Hz, single-phase transformer is tested with the following results: Open-circuit test (measured from Low-voltage side ) Short-circuit test (measured from high-voltage side ) Vsc = 1150V Voc = 480 V Ioc = 1.25 A Isc = 1.00A %3D Poc = 160W Psc = 190W a- Calculate and Sketch the equivalent circuit of this transformer when referred to its low-voltage side. The transformer is now loaded: 15 KW load, 0.9 lagging PF, and a load voltage of 450 V. b- Find the voltage on the high-voltage side of the transformer. c- Find the voltage regulation of this transformer.

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 3.16P: A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters:...
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Solved Problems: Single-Phase Transformers
Problem 1
A 19.2 KVA, 19200/480-V, 60 Hz, single-phase transformer is tested with the following results:
Open-circuit test
(measured from Low-voltage side )
Voc = 480 V
Ioc = 1.25 A
Poc = 160W
Short-circuit test
(measured from high-voltage side )
Vsc = 1150V
Isc = 1.00A
Psc = 190W
a- Calculate and Sketch the equivalent circuit of this transformer when referred to its low-voltage
side.
The transformer is now loaded: 15 KW load, 0.9 lagging PF, and a load voltage of 450 V.
b- Find the voltage on the high-voltage side of the transformer.
c- Find the voltage regulation of this transformer.
Transcribed Image Text:Solved Problems: Single-Phase Transformers Problem 1 A 19.2 KVA, 19200/480-V, 60 Hz, single-phase transformer is tested with the following results: Open-circuit test (measured from Low-voltage side ) Voc = 480 V Ioc = 1.25 A Poc = 160W Short-circuit test (measured from high-voltage side ) Vsc = 1150V Isc = 1.00A Psc = 190W a- Calculate and Sketch the equivalent circuit of this transformer when referred to its low-voltage side. The transformer is now loaded: 15 KW load, 0.9 lagging PF, and a load voltage of 450 V. b- Find the voltage on the high-voltage side of the transformer. c- Find the voltage regulation of this transformer.
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