What is the primary purpose of mod-point grounding of a transformer?

The primary purpose of mod-point grounding of a transformer is to reduce electrical interference. This grounding technique helps to establish a reference point for the system and creates a path for fault currents, which facilitates the protection of the electrical system. By grounding the transformer at the mod-point, any electrical noise or interference that could affect the performance of the transformer and connected equipment can effectively be minimized. This is particularly important in sensitive electronic applications where unwanted noise could lead to malfunction or degraded performance.

While improving efficiency, enhancing power output, and temperature regulation are important aspects of transformer operation, they are not the primary objectives of mod-point grounding. The focus of this grounding method is primarily on enhancing system reliability and safety by reducing the risk of interference in the electrical system.