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Three 20-kVA, 24,000/277-V distribution transformers are connected in
The open-circuit test was performed on the low-voltage side of this transformer bank, and the following data were recorded:
The short-circuit test was performed on the high-voltage side of this transformer bank, and the following data were recorded:
- Find the per-unit equivalent circuit of this transformer bank.
- Find the voltage regulation of this transformer bank at the rated load and 0.90 PF lagging.
- What is the transformer bank’s efficiency under these conditions?
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