Assume that a single-phase, two-winding transformer has a core loss of 1500 W. The secondary (i.e. output) voltage is 480 V and the output power is 40 kW at a 0.8 leading power factor. If the transformer's secondary and primary winding resistances are 0.032 and 0.06N seen from the secondary side, respectively. Assume the secondary voltage is the reference phasor, use the cantilever circuit with the magnetizing branch at the secondary side to determine the following: (a) The output current phasor. (b) Find the core loss resistance in 2 seen from the secondary side. (c) If the magnetizing branch consumes 1600 Var, while the leakage inductance consumes 1000 Var, determine i. the total leakage inductance in 2 seen from the secondary side; ii. The input active power; iii. The transformer efficiency.
Assume that a single-phase, two-winding transformer has a core loss of 1500 W. The secondary (i.e. output) voltage is 480 V and the output power is 40 kW at a 0.8 leading power factor. If the transformer's secondary and primary winding resistances are 0.032 and 0.06N seen from the secondary side, respectively. Assume the secondary voltage is the reference phasor, use the cantilever circuit with the magnetizing branch at the secondary side to determine the following: (a) The output current phasor. (b) Find the core loss resistance in 2 seen from the secondary side. (c) If the magnetizing branch consumes 1600 Var, while the leakage inductance consumes 1000 Var, determine i. the total leakage inductance in 2 seen from the secondary side; ii. The input active power; iii. The transformer efficiency.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Three-Phase Transformers
Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.
Transformer
Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.
Question
Transcribed Image Text:Assume that a single-phase, two-winding transformer has a core loss of 1500 W.
The secondary (i.e. output) voltage is 480 V and the output power is 40 kW at a 0.8
leading power factor. If the transformer's secondary and primary winding resistances
are 0.032 and 0.062 seen from the secondary side, respectively. Assume the secondary
voltage is the reference phasor, use the cantilever circuit with the magnetizing branch at
the secondary side to determine the following:
(a) The output current phasor.
(b) Find the core loss resistance in N seen from the secondary side.
(c) If the magnetizing branch consumes 1600 Var, while the leakage inductance consumes
1000 Var, determine
i. the total leakage inductance in N seen from the secondary side;
ii. The input active power;
iii. The transformer efficiency.
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