The transformers on a wye-delta bank that are not grounded are called what?

The term for transformers on a wye-delta bank that are not grounded is "kickers or power pots." This designation refers to transformers used to adjust voltage levels or provide additional power to a system without being connected to a ground reference.

In electric power systems, particularly in three-phase applications, the grounding of transformers is crucial for safety and stability. However, in certain configurations, such as with non-grounded wye-delta banks, these transformers serve the purpose of managing phase relationships and ensuring continuity of power distribution while still remaining isolated from ground potential.

The choices that do not pertain to non-grounded transformers do not capture this specific function. For instance, "boosters" generally refer to transformers specifically designed to increase voltage, while "stabilizers" typically involve equipment aimed at maintaining voltage stability rather than the specific task of supplying ungrounded power. "Phasers" do not pertain to this context and are more associated with concepts regarding phase angles in AC systems, rather than the function of grounding in transformer banks.

Thus, the correct terminology "kickers or power pots" is vital for understanding the distinct role played by these transformers in electrical systems.