1- 3-phase 25-kVA 34,5/0,48-KVL1 distribution transformers are connected in Y-A. Open-circuit test was performed on the low-voltage side of this transformer bank, and the following data were recorded: Vline,oc = 480 V, Iinç,oc = 4.10 A, Poc = 945 W Short-circuit test was performed on the high-voltage side of this transformer bank, and the following data were recorded: Vine, sC = 808 V, ljine, sc = 3.11 A, Psc = 912 W (a) Find the voltage regulation of this transformer bank at the rated load and 0.85 power factor leading. (b) Draw a phasor diagram of this transformer at 0.85 power factor leading.
1- 3-phase 25-kVA 34,5/0,48-KVL1 distribution transformers are connected in Y-A. Open-circuit test was performed on the low-voltage side of this transformer bank, and the following data were recorded: Vline,oc = 480 V, Iinç,oc = 4.10 A, Poc = 945 W Short-circuit test was performed on the high-voltage side of this transformer bank, and the following data were recorded: Vine, sC = 808 V, ljine, sc = 3.11 A, Psc = 912 W (a) Find the voltage regulation of this transformer bank at the rated load and 0.85 power factor leading. (b) Draw a phasor diagram of this transformer at 0.85 power factor leading.
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Author:Robert L. Boylestad
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Transcribed Image Text:1- 3-phase 25-kVA 34,5/0,48-KVL1 distribution transformers are connected in Y-A.
Open-circuit test was performed on the low-voltage side of this transformer bank, and the following data were
recorded: Vline,oc = 480 V, Iinç,oc = 4.10 A, Poc = 945 W
Short-circuit test was performed on the high-voltage side of this transformer bank, and the following data were
recorded: Vine, sC = 808 V, ljine, sc = 3.11 A, Psc = 912 W
(a) Find the voltage regulation of this transformer bank at the rated load and 0.85 power factor leading.
(b) Draw a phasor diagram of this transformer at 0.85 power factor leading.
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