Is the transformer designed for wye or delta connection on the high side according to the (12470GrdY/7200-120/240) specifications?

The correct interpretation of the transformer specified with the notation (12470GrdY/7200-120/240) indicates that it is designed for a grounded wye configuration on the high side. The "GrdY" part refers to a grounded wye, which is a specific type of connection used in transformer design to enhance safety and system reliability. This grounding provides a reference point for the system voltage and offers protection against over-voltage conditions.

The presence of the grounded wye configuration also influences how the voltage levels are divided. In this case, the high voltage side operates at 12,470 volts, and having it grounded helps ensure that fault currents are effectively managed. The designation does not imply a delta connection, which would be represented differently in the nomenclature.

Understanding that the transformer is designed specifically for a wye connection helps clarify its application in the distribution network and informs linemen about appropriate installation and operational practices. Thus, saying that the statement is false aligns with the understanding that the transformer utilizes a grounded wye configuration on the high side rather than a delta configuration.