What Procedure Should Be Used to Make the Low-Voltage Connections

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The Answer is 1. Energize the three-phase, wye-connected, high-voltage side of the transformer bank. The voltage output of each of the three transformers must be the same as the nameplate rating.
2. Deenergize the primary. Connect the X₂ ends of two low-voltage secondary windings. With all three X₁s open and clear, energize the primary. If the connections are made correctly, the voltage across the open ends is square roof of 3 times the secondary winding voltage. In this case, the voltage across the open ends is 208 V, as indicated in the vector diagram.

What Procedure Should Be Used to Make the Low-Voltage Connections

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What Procedure Should Be Used to Make the Low-Voltage Connections

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Correct Answer:
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