What is the high side coil voltage for a transformer with a specification of (12470GrdY/7200-120/240) 167 Kva?

The specification of the transformer indicates a primary voltage of 12,470 volts (abbreviated as 12470GrdY), which refers to the high side of the transformer. In this case, the "GrdY" signifies that the primary winding is grounded in a wye configuration. Therefore, the high side coil voltage for this particular transformer is indeed 7,200 volts, which corresponds to the lower voltage range intended for secondary distribution.

When analyzing the voltage levels, it's crucial to note that the 12,470 volts is the total phase-to-phase voltage, while the 7,200 volts is the phase-to-neutral voltage, making it the effectively utilized high side voltage when viewed in terms of standard utility connections. This understanding clarifies why the correct choice reflects the high side voltage specified. Other voltage options pertain to secondary voltages or unrelated kVA ratings, which do not apply to the query regarding the high side coil voltage.