Data obtained from short circuit and open circuit tests of a 75-kVA, 4600-230 V, 60 Hz transformer is: Open-Circuit Test (Low Voltage Side Data) Short-Circuit Test (High Voltage Side Data) Voc = 230 V Vc = 168.08 V Ioc 13.04 A Ige = 16.3 A Poc = 52 W Pe = 1200 W %3! a. Draw the transformer equivalent circuit referred to the low voltage side and label the impedances. b. Convert the circuit to per unit using the transformer rating as base. c. If this transformer is supplying power to rated load at 0.8 pf lagging, calculate voltage regulation.
Data obtained from short circuit and open circuit tests of a 75-kVA, 4600-230 V, 60 Hz transformer is: Open-Circuit Test (Low Voltage Side Data) Short-Circuit Test (High Voltage Side Data) Voc = 230 V Vc = 168.08 V Ioc 13.04 A Ige = 16.3 A Poc = 52 W Pe = 1200 W %3! a. Draw the transformer equivalent circuit referred to the low voltage side and label the impedances. b. Convert the circuit to per unit using the transformer rating as base. c. If this transformer is supplying power to rated load at 0.8 pf lagging, calculate voltage regulation.
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Author:Robert L. Boylestad
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Transcribed Image Text:Data obtained from short circuit and open circuit tests of a 75-kVA, 4600-230 V, 60 Hz
transformer is:
Open-Circuit Test (Low Voltage Side Data)
Short-Circuit Test (High Voltage Side Data)
Voc
230 V
= 168.08 V
Ioe
13.04 A
Ise
16.3 A
Poc
= 52 W
Pee = 1200 W
a. Draw the transformer equivalent circuit referred to the low voltage side and label the
impedances.
b. Convert the circuit to per unit using the transformer rating as base.
c. If this transformer is supplying power to rated load at 0.8 pf lagging, calculate voltage
regulation.
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