Which connection is typically used for grounding in a wye transformer configuration?

In a wye transformer configuration, the typical connection used for grounding is the corner ground. This method involves grounding one of the transformer’s phases, usually the phase that is connected to the neutral point. This grounding approach is beneficial because it helps provide a reference point for the system voltage, aids in fault detection, and improves overall system stability.

Using a corner ground also allows for the ungrounded phase to have a high impedance path to ground, reducing the risk of overcurrent during ground faults and enhancing safety. This type of grounding helps limit the potential rise in voltage on the ungrounded phases, protecting equipment and personnel.

The other choices, while related to grounding methods, are less applicable to a standard wye connection configuration. For instance, a grounded delta configuration refers to a delta transformer setup that includes a grounding method at the transformer’s points, which is not the typical grounding method used for wye. Neutral ground is a term more commonly associated with the treatment of the neutral point in systems but is not the specific term typically applied in context with grounding in a wye system. Direct ground indicates an immediate grounding system that may not account for the characteristics of a wye transformer specifically. Therefore, corner grounding remains the most relevant and appropriate choice in