What is the DELTA system?

The DELTA system refers to a configuration commonly used in three-phase electrical systems characterized by windings that form an equilateral triangle. In this setup, each of the three-phase windings is connected at the corners of the triangle, which allows for balanced power distribution among the phases. This arrangement is beneficial in minimizing the return current in neutral wires, making it efficient for power transmission and distribution.

This configuration is particularly advantageous in industrial applications, as it can efficiently handle both balanced and unbalanced loads and provides the facility for higher voltage levels to be used, which is essential for reducing losses over long distances. Furthermore, the DELTA connection allows for a robust performance under different loading conditions, making it a preferred choice in many electrical power systems.

The other options do not accurately reflect the characteristics of the DELTA system. The linear arrangement described in the first option pertains more to other configurations, the single-phase distribution method mentioned in the third option does not correspond with the three-phase nature of the DELTA system, and the fourth option regarding transmission line layout does not specify the connection type but rather a physical structure unrelated to the winding configuration.