When the dual tap changer is set on low, what is the coil voltage on the high side of the transformer rated at 2400X7200/12470Y-120/240?

When a dual tap changer on a transformer is set to low, it affects the configuration of the transformer’s winding, impacting the output voltage at the high side. In the given transformer rated at 2400X7200/12470Y-120/240, the designation signifies multiple voltage levels, with the primary side having a maximum of 7200 volts and the secondary side providing 120/240 volts.

When the tap changer is positioned on low, it effectively determines the primary voltage level being utilized. In this case, the setting would take into account that on the high side, the voltage corresponding to the first tap point is indeed 2400 volts when operating under low settings.

This understanding is crucial in interpreting how transformers utilize tap changers to manipulate voltage outputs for various applications. The correct answer reflects the voltage level at the high side when adjustments are made to meet specific load requirements or to maintain adequate voltage levels for distribution systems.