2.5 A 16,25 KVA, 220/440 V, 60 Hz transformer gave the following test results. Open circuit test (440 V side open): 220 V, 9.5 A, 650 W Short-circuit test (220 V side shorted): 37.5 V, 55 A, 950 W (a) Derive the approximate equivalent circuit in per-unit values. (b) Determine the voltage regulation at full load, 0.8 PF lagging. (c) Draw the phasor diagram for condition (b).

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Sen 2.5
2.5
A 16,25 kVA, 220/440 V, 60 Hz transformer gave the following test results.
Open circuit test (440 V side open): 220 V, 9.5 A, 650 W
Short-circuit test (220 V side shorted): 37.5 V, 55 A, 950 W
(a) Derive the approximate equivalent circuit in per-unit values.
(b) Determine the voltage regulation at full load, 0.8 PF lagging.
(c) Draw the phasor diagram for condition (b).
Transcribed Image Text:Sen 2.5 2.5 A 16,25 kVA, 220/440 V, 60 Hz transformer gave the following test results. Open circuit test (440 V side open): 220 V, 9.5 A, 650 W Short-circuit test (220 V side shorted): 37.5 V, 55 A, 950 W (a) Derive the approximate equivalent circuit in per-unit values. (b) Determine the voltage regulation at full load, 0.8 PF lagging. (c) Draw the phasor diagram for condition (b).
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