The exciting curent of a lø, 10 kVA, 2200/220 V, 60 Hz transformer is 0.25 A when measured on the high-voltage side. Its equivalent impedance is 10.4 + j31.3 2 when referred to the high- voltage side. Taking the transformer rating as base,

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(c) Obtain the equivalent circuit in per-unit form.
(d) Find the full-load copper loss in per-unit form.
(e) Determine the per-unit voltage regulation (using the per-unit equivalent circuit from part
c) when the transformer delivers 75% full load at 0.6 lagging power factor.
Transcribed Image Text:(c) Obtain the equivalent circuit in per-unit form. (d) Find the full-load copper loss in per-unit form. (e) Determine the per-unit voltage regulation (using the per-unit equivalent circuit from part c) when the transformer delivers 75% full load at 0.6 lagging power factor.
P.6
The exciting current of a lø, 10 kVA, 2200/220 V, 60 Hz transformer is 0.25 A when measured
on the high-voltage side. Its equivalent impedance is 10.4 + j31.3 2 when referred to the high-
voltage side. Taking the transformer rating as base,
Transcribed Image Text:P.6 The exciting current of a lø, 10 kVA, 2200/220 V, 60 Hz transformer is 0.25 A when measured on the high-voltage side. Its equivalent impedance is 10.4 + j31.3 2 when referred to the high- voltage side. Taking the transformer rating as base,
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