connected Open Given: Balanced 30 load; Z₁ = 24/15⁰ Ohms, connected - delta. Balanced 30 transformer bank - Delta Line to Line voltage V₁ = 480 volts. Determine: (a) total real, reactive and apparent power; (b) Apparent power and power factor of each transformer is operating.

connected Open Given: Balanced 30 load; Z₁ = 24/15⁰ Ohms, connected - delta. Balanced 30 transformer bank - Delta Line to Line voltage V₁ = 480 volts. Determine: (a) total real, reactive and apparent power; (b) Apparent power and power factor of each transformer is operating.

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 3.51P: The ratings of a three-phase three-winding transformer are Primary(1): Y connected 66kV,15MVA...

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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

3. Given: Balanced 30 load; Z₁ = 24/15⁰ Ohms, connected - delta. Balanced 30 transformer bank -
connected Open - Delta Line to Line voltage V₁ = 480 volts. Determine: (a) total real,
reactive and apparent power; (b) Apparent power and power factor of each transformer is
operating.
(a) Total real, reactive and apparent power:
Q
S
P
27818.665 W
7453.982 VARs (Ind.)
28800.00 V.A.
(b) Apparent power & P.F. of each transformer
Transformer 1
01
Transformer 2
e2
S2 (kVA)
SI (KVA)
16.628
45.000
16.628
15.000
P.F.1
0.707
P.F.2
0.966

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