A 30 KVA, 24000/220 V, Y A connected transformer bank is operated at full load with an efficiency of 96% and a voltage regulation of 11%. The primary voltage leads the secondary voltage by 5.77 ^ 0 The phase impedance of the transformer windings is 0.1532 / 78.7° pu. Find: a) the per-phase base voltage, current, impedance and power in the high-voltage region and the low voltage region.
A 30 KVA, 24000/220 V, Y A connected transformer bank is operated at full load with an efficiency of 96% and a voltage regulation of 11%. The primary voltage leads the secondary voltage by 5.77 ^ 0 The phase impedance of the transformer windings is 0.1532 / 78.7° pu. Find: a) the per-phase base voltage, current, impedance and power in the high-voltage region and the low voltage region.
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A 30 KVA, 24000/220 V, Y A connected transformer bank is operated at full load with an efficiency of 96% and a voltage regulation of 11%. The primary voltage leads the secondary voltage by 5.77 ^ 0 The phase impedance of the transformer windings is 0.1532 / 78.7° pu. Find: a) the per-phase base voltage, current, impedance and power in the high-voltage region and the low voltage region.
Transcribed Image Text:A 30 kVA, 24000/220 V, Y-A connected transformer bank is operated at full load with an efficiency
of 96% and a voltage regulation of 11%. The primary voltage leads the secondary voltage by 5.77°.
The phase impedance of the transformer windings is 0.1532 / 78.7° pu. Find:
a) the per-phase base voltage, current, impedance and power in the high-voltage region and the low-
voltage region.
Per Phase
High-Voltage Side
Low–Voltage Side
Base Power
Base Voltage
Base Current
Base Impedence
b) the load power factor.
c) the core losses in the transformer bank.
d) the power measured at the high-voltage side during short-circuit test.
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